waybetter-for-x/apps/web/public/store/plugins/bt-emoji-picker.plugin.js

/**
 * @name Emoji Picker
 * @description A Discord-style emoji picker for X's text boxes. X's own emoji button (or Ctrl+Shift+E) opens it right under the composer toolbar: search with skin tones on top, a category rail on the left, one scrolling grid with Frequently used first and sticky category headers, and a preview bar with the :shortcode:. Full keyboard control (arrows, Enter, Tab, PageUp/PageDown, Esc). In text boxes without X's own emoji suggestions, `:fire` suggests emoji (arrows/Tab/Enter insert, Esc closes) and a closing `:` inserts an exact match. The gear in the picker chooses whether X's emoji button opens this picker or X's own.
 * @version 3.2.0
 * @author wayBetter
 * @permissions storage, ui, network:none
 */
const EMOJI_DATA = {"categories":["Smileys & Emotion","People & Body","Animals & Nature","Food & Drink","Travel & Places","Activities","Objects","Symbols","Flags"],"rows":[["😀","grinning","smile happy",0,0],["😃","smiley","happy joy haha",0,0],["😄","smile","happy joy laugh pleased",0,0],["😁","grin","",0,0],["😆","laughing;satisfied","happy haha",0,0],["😅","sweat_smile","hot",0,0],["🤣","rofl","lol laughing",0,0],["😂","joy","tears",0,0],["🙂","slightly_smiling_face","",0,0],["🙃","upside_down_face","",0,0],["🫠","melting_face","sarcasm dread",0,0],["😉","wink","flirt",0,0],["😊","blush","proud",0,0],["😇","innocent","angel",0,0],["🥰","smiling_face_with_three_hearts","love",0,0],["😍","heart_eyes","love crush",0,0],["🤩","star_struck","eyes",0,0],["😘","kissing_heart","flirt",0,0],["😗","kissing","",0,0],["☺️","relaxed","blush pleased",0,0],["😚","kissing_closed_eyes","",0,0],["😙","kissing_smiling_eyes","",0,0],["🥲","smiling_face_with_tear","",0,0],["😋","yum","tongue lick",0,0],["😛","stuck_out_tongue","",0,0],["😜","stuck_out_tongue_winking_eye","prank silly",0,0],["🤪","zany_face","goofy wacky",0,0],["😝","stuck_out_tongue_closed_eyes","prank",0,0],["🤑","money_mouth_face","rich",0,0],["🤗","hugs","",0,0],["🤭","hand_over_mouth","quiet whoops",0,0],["🫢","face_with_open_eyes_and_hand_over_mouth","gasp shock",0,0],["🫣","face_with_peeking_eye","",0,0],["🤫","shushing_face","silence quiet",0,0],["🤔","thinking","",0,0],["🫡","saluting_face","respect",0,0],["🤐","zipper_mouth_face","silence hush",0,0],["🤨","raised_eyebrow","suspicious",0,0],["😐","neutral_face","meh",0,0],["😑","expressionless","",0,0],["😶","no_mouth","mute silence",0,0],["🫥","dotted_line_face","invisible",0,0],["😶‍🌫️","face_in_clouds","",0,0],["😏","smirk","smug",0,0],["😒","unamused","meh",0,0],["🙄","roll_eyes","",0,0],["😬","grimacing","",0,0],["😮‍💨","face_exhaling","",0,0],["🤥","lying_face","liar",0,0],["😌","relieved","whew",0,0],["😔","pensive","",0,0],["😪","sleepy","tired",0,0],["🤤","drooling_face","",0,0],["😴","sleeping","zzz",0,0],["😷","mask","sick ill",0,0],["🤒","face_with_thermometer","sick",0,0],["🤕","face_with_head_bandage","hurt",0,0],["🤢","nauseated_face","sick barf disgusted",0,0],["🤮","vomiting_face","barf sick",0,0],["🤧","sneezing_face","achoo sick",0,0],["🥵","hot_face","heat sweating",0,0],["🥶","cold_face","freezing ice",0,0],["🥴","woozy_face","groggy",0,0],["😵","dizzy_face","",0,0],["😵‍💫","face_with_spiral_eyes","",0,0],["🤯","exploding_head","mind blown",0,0],["🤠","cowboy_hat_face","",0,0],["🥳","partying_face","celebration birthday",0,0],["🥸","disguised_face","",0,0],["😎","sunglasses","cool",0,0],["🤓","nerd_face","geek glasses",0,0],["🧐","monocle_face","",0,0],["😕","confused","",0,0],["🫤","face_with_diagonal_mouth","confused",0,0],["😟","worried","nervous",0,0],["🙁","slightly_frowning_face","",0,0],["☹️","frowning_face","",0,0],["😮","open_mouth","surprise impressed wow",0,0],["😯","hushed","silence speechless",0,0],["😲","astonished","amazed gasp",0,0],["😳","flushed","",0,0],["🥺","pleading_face","puppy eyes",0,0],["🥹","face_holding_back_tears","tears gratitude",0,0],["😦","frowning","",0,0],["😧","anguished","stunned",0,0],["😨","fearful","scared shocked oops",0,0],["😰","cold_sweat","nervous",0,0],["😥","disappointed_relieved","phew sweat nervous",0,0],["😢","cry","sad tear",0,0],["😭","sob","sad cry bawling",0,0],["😱","scream","horror shocked",0,0],["😖","confounded","",0,0],["😣","persevere","struggling",0,0],["😞","disappointed","sad",0,0],["😓","sweat","",0,0],["😩","weary","tired",0,0],["😫","tired_face","upset whine",0,0],["🥱","yawning_face","",0,0],["😤","triumph","smug",0,0],["😡","rage;pout","angry",0,0],["😠","angry","mad annoyed",0,0],["🤬","cursing_face","foul",0,0],["😈","smiling_imp","devil evil horns",0,0],["👿","imp","angry devil evil horns",0,0],["💀","skull","dead danger poison",0,0],["☠️","skull_and_crossbones","danger pirate",0,0],["💩","hankey;poop;shit","crap",0,0],["🤡","clown_face","",0,0],["👹","japanese_ogre","monster",0,0],["👺","japanese_goblin","",0,0],["👻","ghost","halloween",0,0],["👽","alien","ufo",0,0],["👾","space_invader","game retro",0,0],["🤖","robot","",0,0],["😺","smiley_cat","",0,0],["😸","smile_cat","",0,0],["😹","joy_cat","",0,0],["😻","heart_eyes_cat","",0,0],["😼","smirk_cat","",0,0],["😽","kissing_cat","",0,0],["🙀","scream_cat","horror",0,0],["😿","crying_cat_face","sad tear",0,0],["😾","pouting_cat","",0,0],["🙈","see_no_evil","monkey blind ignore",0,0],["🙉","hear_no_evil","monkey deaf",0,0],["🙊","speak_no_evil","monkey mute hush",0,0],["💋","kiss","lipstick",0,0],["💌","love_letter","email envelope",0,0],["💘","cupid","love heart",0,0],["💝","gift_heart","chocolates",0,0],["💖","sparkling_heart","",0,0],["💗","heartpulse","",0,0],["💓","heartbeat","",0,0],["💞","revolving_hearts","",0,0],["💕","two_hearts","",0,0],["💟","heart_decoration","",0,0],["❣️","heavy_heart_exclamation","",0,0],["💔","broken_heart","",0,0],["❤️‍🔥","heart_on_fire","",0,0],["❤️‍🩹","mending_heart","",0,0],["❤️","heart","love",0,0],["🧡","orange_heart","",0,0],["💛","yellow_heart","",0,0],["💚","green_heart","",0,0],["💙","blue_heart","",0,0],["💜","purple_heart","",0,0],["🤎","brown_heart","",0,0],["🖤","black_heart","",0,0],["🤍","white_heart","",0,0],["💯","100","score perfect",0,0],["💢","anger","angry",0,0],["💥","boom;collision","explode",0,0],["💫","dizzy","star",0,0],["💦","sweat_drops","water workout",0,0],["💨","dash","wind blow fast",0,0],["🕳️","hole","",0,0],["💣","bomb","boom",0,0],["💬","speech_balloon","comment",0,0],["👁️‍🗨️","eye_speech_bubble","",0,0],["🗨️","left_speech_bubble","",0,0],["🗯️","right_anger_bubble","",0,0],["💭","thought_balloon","thinking",0,0],["💤","zzz","sleeping",0,0],["👋","wave","goodbye",1,1],["🤚","raised_back_of_hand","",1,1],["🖐️","raised_hand_with_fingers_splayed","",1,1],["✋","hand;raised_hand","highfive stop",1,1],["🖖","vulcan_salute","prosper spock",1,1],["🫱","rightwards_hand","",1,1],["🫲","leftwards_hand","",1,1],["🫳","palm_down_hand","",1,1],["🫴","palm_up_hand","",1,1],["👌","ok_hand","",1,1],["🤌","pinched_fingers","",1,1],["🤏","pinching_hand","",1,1],["✌️","v","victory peace",1,1],["🤞","crossed_fingers","luck hopeful",1,1],["🫰","hand_with_index_finger_and_thumb_crossed","",1,1],["🤟","love_you_gesture","",1,1],["🤘","metal","",1,1],["🤙","call_me_hand","",1,1],["👈","point_left","",1,1],["👉","point_right","",1,1],["👆","point_up_2","",1,1],["🖕","middle_finger;fu","",1,1],["👇","point_down","",1,1],["☝️","point_up","",1,1],["🫵","index_pointing_at_the_viewer","",1,1],["👍","+1;thumbsup","approve ok",1,1],["👎","-1;thumbsdown","disapprove bury",1,1],["✊","fist_raised;fist","power",1,1],["👊","fist_oncoming;facepunch;punch","attack",1,1],["🤛","fist_left","",1,1],["🤜","fist_right","",1,1],["👏","clap","praise applause",1,1],["🙌","raised_hands","hooray",1,1],["🫶","heart_hands","love",1,1],["👐","open_hands","",1,1],["🤲","palms_up_together","",1,1],["🤝","handshake","deal",1,1],["🙏","pray","please hope wish",1,1],["✍️","writing_hand","",1,1],["💅","nail_care","beauty manicure",1,1],["🤳","selfie","",1,1],["💪","muscle","flex bicep strong workout",1,1],["🦾","mechanical_arm","",1,0],["🦿","mechanical_leg","",1,0],["🦵","leg","",1,1],["🦶","foot","",1,1],["👂","ear","hear sound listen",1,1],["🦻","ear_with_hearing_aid","",1,1],["👃","nose","smell",1,1],["🧠","brain","",1,0],["🫀","anatomical_heart","",1,0],["🫁","lungs","",1,0],["🦷","tooth","",1,0],["🦴","bone","",1,0],["👀","eyes","look see watch",1,0],["👁️","eye","",1,0],["👅","tongue","taste",1,0],["👄","lips","kiss",1,0],["🫦","biting_lip","",1,0],["👶","baby","child newborn",1,1],["🧒","child","",1,1],["👦","boy","child",1,1],["👧","girl","child",1,1],["🧑","adult","",1,1],["👱","blond_haired_person","",1,1],["👨","man","mustache father dad",1,1],["🧔","bearded_person","",1,1],["🧔‍♂️","man_beard","",1,1],["🧔‍♀️","woman_beard","",1,1],["👨‍🦰","red_haired_man","",1,1],["👨‍🦱","curly_haired_man","",1,1],["👨‍🦳","white_haired_man","",1,1],["👨‍🦲","bald_man","",1,1],["👩","woman","girls",1,1],["👩‍🦰","red_haired_woman","",1,1],["🧑‍🦰","person_red_hair","",1,1],["👩‍🦱","curly_haired_woman","",1,1],["🧑‍🦱","person_curly_hair","",1,1],["👩‍🦳","white_haired_woman","",1,1],["🧑‍🦳","person_white_hair","",1,1],["👩‍🦲","bald_woman","",1,1],["🧑‍🦲","person_bald","",1,1],["👱‍♀️","blond_haired_woman;blonde_woman","",1,1],["👱‍♂️","blond_haired_man","",1,1],["🧓","older_adult","",1,1],["👴","older_man","",1,1],["👵","older_woman","",1,1],["🙍","frowning_person","",1,1],["🙍‍♂️","frowning_man","",1,1],["🙍‍♀️","frowning_woman","",1,1],["🙎","pouting_face","",1,1],["🙎‍♂️","pouting_man","",1,1],["🙎‍♀️","pouting_woman","",1,1],["🙅","no_good","stop halt denied",1,1],["🙅‍♂️","no_good_man;ng_man","stop halt denied",1,1],["🙅‍♀️","no_good_woman;ng_woman","stop halt denied",1,1],["🙆","ok_person","",1,1],["🙆‍♂️","ok_man","",1,1],["🙆‍♀️","ok_woman","",1,1],["💁","tipping_hand_person;information_desk_person","",1,1],["💁‍♂️","tipping_hand_man;sassy_man","information",1,1],["💁‍♀️","tipping_hand_woman;sassy_woman","information",1,1],["🙋","raising_hand","",1,1],["🙋‍♂️","raising_hand_man","",1,1],["🙋‍♀️","raising_hand_woman","",1,1],["🧏","deaf_person","",1,1],["🧏‍♂️","deaf_man","",1,1],["🧏‍♀️","deaf_woman","",1,1],["🙇","bow","respect thanks",1,1],["🙇‍♂️","bowing_man","respect thanks",1,1],["🙇‍♀️","bowing_woman","respect thanks",1,1],["🤦","facepalm","",1,1],["🤦‍♂️","man_facepalming","",1,1],["🤦‍♀️","woman_facepalming","",1,1],["🤷","shrug","",1,1],["🤷‍♂️","man_shrugging","",1,1],["🤷‍♀️","woman_shrugging","",1,1],["🧑‍⚕️","health_worker","",1,1],["👨‍⚕️","man_health_worker","doctor nurse",1,1],["👩‍⚕️","woman_health_worker","doctor nurse",1,1],["🧑‍🎓","student","",1,1],["👨‍🎓","man_student","graduation",1,1],["👩‍🎓","woman_student","graduation",1,1],["🧑‍🏫","teacher","",1,1],["👨‍🏫","man_teacher","school professor",1,1],["👩‍🏫","woman_teacher","school professor",1,1],["🧑‍⚖️","judge","",1,1],["👨‍⚖️","man_judge","justice",1,1],["👩‍⚖️","woman_judge","justice",1,1],["🧑‍🌾","farmer","",1,1],["👨‍🌾","man_farmer","",1,1],["👩‍🌾","woman_farmer","",1,1],["🧑‍🍳","cook","",1,1],["👨‍🍳","man_cook","chef",1,1],["👩‍🍳","woman_cook","chef",1,1],["🧑‍🔧","mechanic","",1,1],["👨‍🔧","man_mechanic","",1,1],["👩‍🔧","woman_mechanic","",1,1],["🧑‍🏭","factory_worker","",1,1],["👨‍🏭","man_factory_worker","",1,1],["👩‍🏭","woman_factory_worker","",1,1],["🧑‍💼","office_worker","",1,1],["👨‍💼","man_office_worker","business",1,1],["👩‍💼","woman_office_worker","business",1,1],["🧑‍🔬","scientist","",1,1],["👨‍🔬","man_scientist","research",1,1],["👩‍🔬","woman_scientist","research",1,1],["🧑‍💻","technologist","",1,1],["👨‍💻","man_technologist","coder",1,1],["👩‍💻","woman_technologist","coder",1,1],["🧑‍🎤","singer","",1,1],["👨‍🎤","man_singer","rockstar",1,1],["👩‍🎤","woman_singer","rockstar",1,1],["🧑‍🎨","artist","",1,1],["👨‍🎨","man_artist","painter",1,1],["👩‍🎨","woman_artist","painter",1,1],["🧑‍✈️","pilot","",1,1],["👨‍✈️","man_pilot","",1,1],["👩‍✈️","woman_pilot","",1,1],["🧑‍🚀","astronaut","",1,1],["👨‍🚀","man_astronaut","space",1,1],["👩‍🚀","woman_astronaut","space",1,1],["🧑‍🚒","firefighter","",1,1],["👨‍🚒","man_firefighter","",1,1],["👩‍🚒","woman_firefighter","",1,1],["👮","police_officer;cop","law",1,1],["👮‍♂️","policeman","law cop",1,1],["👮‍♀️","policewoman","law cop",1,1],["🕵️","detective","sleuth",1,1],["🕵️‍♂️","male_detective","sleuth",1,1],["🕵️‍♀️","female_detective","sleuth",1,1],["💂","guard","",1,1],["💂‍♂️","guardsman","",1,1],["💂‍♀️","guardswoman","",1,1],["🥷","ninja","",1,1],["👷","construction_worker","helmet",1,1],["👷‍♂️","construction_worker_man","helmet",1,1],["👷‍♀️","construction_worker_woman","helmet",1,1],["🫅","person_with_crown","",1,1],["🤴","prince","crown royal",1,1],["👸","princess","crown royal",1,1],["👳","person_with_turban","",1,1],["👳‍♂️","man_with_turban","",1,1],["👳‍♀️","woman_with_turban","",1,1],["👲","man_with_gua_pi_mao","",1,1],["🧕","woman_with_headscarf","hijab",1,1],["🤵","person_in_tuxedo","groom marriage wedding",1,1],["🤵‍♂️","man_in_tuxedo","",1,1],["🤵‍♀️","woman_in_tuxedo","",1,1],["👰","person_with_veil","marriage 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british",8,0],["🇬🇩","grenada","",8,0],["🇬🇪","georgia","",8,0],["🇬🇫","french_guiana","",8,0],["🇬🇬","guernsey","",8,0],["🇬🇭","ghana","",8,0],["🇬🇮","gibraltar","",8,0],["🇬🇱","greenland","",8,0],["🇬🇲","gambia","",8,0],["🇬🇳","guinea","",8,0],["🇬🇵","guadeloupe","",8,0],["🇬🇶","equatorial_guinea","",8,0],["🇬🇷","greece","",8,0],["🇬🇸","south_georgia_south_sandwich_islands","",8,0],["🇬🇹","guatemala","",8,0],["🇬🇺","guam","",8,0],["🇬🇼","guinea_bissau","",8,0],["🇬🇾","guyana","",8,0],["🇭🇰","hong_kong","",8,0],["🇭🇲","heard_mcdonald_islands","",8,0],["🇭🇳","honduras","",8,0],["🇭🇷","croatia","",8,0],["🇭🇹","haiti","",8,0],["🇭🇺","hungary","",8,0],["🇮🇨","canary_islands","",8,0],["🇮🇩","indonesia","",8,0],["🇮🇪","ireland","",8,0],["🇮🇱","israel","",8,0],["🇮🇲","isle_of_man","",8,0],["🇮🇳","india","",8,0],["🇮🇴","british_indian_ocean_territory","",8,0],["🇮🇶","iraq","",8,0],["🇮🇷","iran","",8,0],["🇮🇸","iceland","",8,0],["🇮🇹","it","italy",8,0],["🇯🇪","jersey","",8,0],["🇯🇲","jamaica","",8,0],["🇯🇴","jordan","",8,0],["🇯🇵","jp","japan",8,0],["🇰🇪","kenya","",8,0],["🇰🇬","kyrgyzstan","",8,0],["🇰🇭","cambodia","",8,0],["🇰🇮","kiribati","",8,0],["🇰🇲","comoros","",8,0],["🇰🇳","st_kitts_nevis","",8,0],["🇰🇵","north_korea","",8,0],["🇰🇷","kr","korea",8,0],["🇰🇼","kuwait","",8,0],["🇰🇾","cayman_islands","",8,0],["🇰🇿","kazakhstan","",8,0],["🇱🇦","laos","",8,0],["🇱🇧","lebanon","",8,0],["🇱🇨","st_lucia","",8,0],["🇱🇮","liechtenstein","",8,0],["🇱🇰","sri_lanka","",8,0],["🇱🇷","liberia","",8,0],["🇱🇸","lesotho","",8,0],["🇱🇹","lithuania","",8,0],["🇱🇺","luxembourg","",8,0],["🇱🇻","latvia","",8,0],["🇱🇾","libya","",8,0],["🇲🇦","morocco","",8,0],["🇲🇨","monaco","",8,0],["🇲🇩","moldova","",8,0],["🇲🇪","montenegro","",8,0],["🇲🇫","st_martin","",8,0],["🇲🇬","madagascar","",8,0],["🇲🇭","marshall_islands","",8,0],["🇲🇰","macedonia","",8,0],["🇲🇱","mali","",8,0],["🇲🇲","myanmar","burma",8,0],["🇲🇳","mongolia","",8,0],["🇲🇴","macau","",8,0],["🇲🇵","northern_mariana_islands","",8,0],["🇲🇶","martinique","",8,0],["🇲🇷","mauritania","",8,0],["🇲🇸","montserrat","",8,0],["🇲🇹","malta","",8,0],["🇲🇺","mauritius","",8,0],["🇲🇻","maldives","",8,0],["🇲🇼","malawi","",8,0],["🇲🇽","mexico","",8,0],["🇲🇾","malaysia","",8,0],["🇲🇿","mozambique","",8,0],["🇳🇦","namibia","",8,0],["🇳🇨","new_caledonia","",8,0],["🇳🇪","niger","",8,0],["🇳🇫","norfolk_island","",8,0],["🇳🇬","nigeria","",8,0],["🇳🇮","nicaragua","",8,0],["🇳🇱","netherlands","",8,0],["🇳🇴","norway","",8,0],["🇳🇵","nepal","",8,0],["🇳🇷","nauru","",8,0],["🇳🇺","niue","",8,0],["🇳🇿","new_zealand","",8,0],["🇴🇲","oman","",8,0],["🇵🇦","panama","",8,0],["🇵🇪","peru","",8,0],["🇵🇫","french_polynesia","",8,0],["🇵🇬","papua_new_guinea","",8,0],["🇵🇭","philippines","",8,0],["🇵🇰","pakistan","",8,0],["🇵🇱","poland","",8,0],["🇵🇲","st_pierre_miquelon","",8,0],["🇵🇳","pitcairn_islands","",8,0],["🇵🇷","puerto_rico","",8,0],["🇵🇸","palestinian_territories","",8,0],["🇵🇹","portugal","",8,0],["🇵🇼","palau","",8,0],["🇵🇾","paraguay","",8,0],["🇶🇦","qatar","",8,0],["🇷🇪","reunion","",8,0],["🇷🇴","romania","",8,0],["🇷🇸","serbia","",8,0],["🇷🇺","ru","russia",8,0],["🇷🇼","rwanda","",8,0],["🇸🇦","saudi_arabia","",8,0],["🇸🇧","solomon_islands","",8,0],["🇸🇨","seychelles","",8,0],["🇸🇩","sudan","",8,0],["🇸🇪","sweden","",8,0],["🇸🇬","singapore","",8,0],["🇸🇭","st_helena","",8,0],["🇸🇮","slovenia","",8,0],["🇸🇯","svalbard_jan_mayen","",8,0],["🇸🇰","slovakia","",8,0],["🇸🇱","sierra_leone","",8,0],["🇸🇲","san_marino","",8,0],["🇸🇳","senegal","",8,0],["🇸🇴","somalia","",8,0],["🇸🇷","suriname","",8,0],["🇸🇸","south_sudan","",8,0],["🇸🇹","sao_tome_principe","",8,0],["🇸🇻","el_salvador","",8,0],["🇸🇽","sint_maarten","",8,0],["🇸🇾","syria","",8,0],["🇸🇿","swaziland","",8,0],["🇹🇦","tristan_da_cunha","",8,0],["🇹🇨","turks_caicos_islands","",8,0],["🇹🇩","chad","",8,0],["🇹🇫","french_southern_territories","",8,0],["🇹🇬","togo","",8,0],["🇹🇭","thailand","",8,0],["🇹🇯","tajikistan","",8,0],["🇹🇰","tokelau","",8,0],["🇹🇱","timor_leste","",8,0],["🇹🇲","turkmenistan","",8,0],["🇹🇳","tunisia","",8,0],["🇹🇴","tonga","",8,0],["🇹🇷","tr","turkey",8,0],["🇹🇹","trinidad_tobago","",8,0],["🇹🇻","tuvalu","",8,0],["🇹🇼","taiwan","",8,0],["🇹🇿","tanzania","",8,0],["🇺🇦","ukraine","",8,0],["🇺🇬","uganda","",8,0],["🇺🇲","us_outlying_islands","",8,0],["🇺🇳","united_nations","",8,0],["🇺🇸","us","flag united america",8,0],["🇺🇾","uruguay","",8,0],["🇺🇿","uzbekistan","",8,0],["🇻🇦","vatican_city","",8,0],["🇻🇨","st_vincent_grenadines","",8,0],["🇻🇪","venezuela","",8,0],["🇻🇬","british_virgin_islands","",8,0],["🇻🇮","us_virgin_islands","",8,0],["🇻🇳","vietnam","",8,0],["🇻🇺","vanuatu","",8,0],["🇼🇫","wallis_futuna","",8,0],["🇼🇸","samoa","",8,0],["🇽🇰","kosovo","",8,0],["🇾🇪","yemen","",8,0],["🇾🇹","mayotte","",8,0],["🇿🇦","south_africa","",8,0],["🇿🇲","zambia","",8,0],["🇿🇼","zimbabwe","",8,0],["🏴󠁧󠁢󠁥󠁮󠁧󠁿","england","",8,0],["🏴󠁧󠁢󠁳󠁣󠁴󠁿","scotland","",8,0],["🏴󠁧󠁢󠁷󠁬󠁳󠁿","wales","",8,0]]};
// Geometry (px). The card is a fixed-size panel like Discord's: header, a category rail on the
// left, the grid, and a preview bar under the grid. Narrow panes shrink the width only: the grid
// loses columns, the layout stays.
const BT_EP_CELL = 40;
const BT_EP_COLS = 9;
const BT_EP_ROW = BT_EP_CELL;
const BT_EP_HEAD = 32;
const BT_EP_PAD_L = 8;
const BT_EP_PAD_R = 4;
const BT_EP_MIN_COLS = 5;
const BT_EP_CARD_W = 432;
// i18n:begin
// This plugin's English words. Translations live in the app's catalogs (plugin.<file name>.*,
// docs/TRANSLATING.md); a plugin of your own can also pass { en: {...}, tr: {...} } to register.
const MESSAGES = {
  "en": {
    "suggestions": "Emoji suggestions",
    "matching": "Emoji matching",
    "buttonTitle": "Emoji (Ctrl+Shift+E)",
    "picker": "Emoji picker",
    "title": "Emoji Picker",
    "replaceX": "Open this picker from X's emoji button",
    "replaceXHint": "Off: X's own picker stays on its button, and this one gets a button of its own next to it.",
    "cancel": "Cancel",
    "save": "Save",
    "results": "Search results",
    "frequent": "Frequently used",
    "search": "Search emoji",
    "clearSearch": "Clear search",
    "clear": "Clear",
    "skinTone": "Skin tone",
    "tone0": "Default",
    "tone1": "Light",
    "tone2": "Medium-light",
    "tone3": "Medium",
    "tone4": "Medium-dark",
    "tone5": "Dark",
    "categories": "Categories",
    "grid": "Emoji",
    "emptyHint": "Try a word like “party” or “heart”.",
    "settingsLabel": "Emoji picker settings",
    "settings": "Settings",
    "noMatch": "No emoji match “{query}”",
    "resultCount": "{count, plural, one {# result} other {# results}}",
    "noResults": "No results",
    "pick": "Pick an emoji",
    "shiftClick": "Shift+click adds several",
    "added": "{name} added",
    "toneNamed": "Skin tone: {tone}",
    "flag": "Flag: {code}",
    "cat0": "Smileys & Emotion",
    "cat1": "People & Body",
    "cat2": "Animals & Nature",
    "cat3": "Food & Drink",
    "cat4": "Travel & Places",
    "cat5": "Activities",
    "cat6": "Objects",
    "cat7": "Symbols",
    "cat8": "Flags"
  }
};
// i18n:end
/** The words in the app's language (api.i18n); English before start() and outside the app. */
let i18n = null;
const t = (key, params = {}) => (i18n ? i18n.t(key, params) : String(MESSAGES.en[key] ?? key)
  .replace(/\{(\w+), plural, one \{([^{}]*)\} other \{([^{}]*)\}\}/g, (m, name, one, other) => (Number(params[name]) === 1 ? one : other).replace('#', String(params[name])))
  .replace(/\{(\w+)\}/g, (m, name) => (name in params ? String(params[name]) : m)));
const BT_EP_CARD_H = 440;
const BT_EP_CARD_MIN = 300;
/** Glyph atlas: each emoji drawn once into a BT_EP_BOX square, BT_EP_SHEET_COLS to a sheet row. */
const BT_EP_BOX = 36;
const BT_EP_SHEET_COLS = 8;
const BT_EP_SHEET_SIZE = 64;
const BT_EP_AC_W = 300;
const BT_EP_TONES = ['\u{1F3FB}', '\u{1F3FC}', '\u{1F3FD}', '\u{1F3FE}', '\u{1F3FF}'];
const BT_EP_TONE_NAMES = ['Default', 'Light', 'Medium-light', 'Medium', 'Medium-dark', 'Dark'];
const BT_EP_TONE_BASE = '✋';
const BT_EP_CAT_ICONS = ['smileys', 'people', 'nature', 'food', 'travel', 'activities', 'objects', 'symbols', 'flags'];
const BT_EP_TRIGGER = /(^|[\s(])[:]([a-z0-9_+-]{2,32})$/i;
const BT_EP_EXACT = /(^|[\s(])[:]([a-z0-9_+-]{1,32})[:]$/i;
const BT_EP_EDITABLE = '[contenteditable="true"], textarea, input[type="text"], input:not([type])';
const BT_EP_NAV = ['ArrowLeft', 'ArrowRight', 'ArrowUp', 'ArrowDown', 'Home', 'End', 'PageUp', 'PageDown'];
const BT_EP_GLYPH = '"Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", "Twemoji Mozilla", sans-serif';
/** X's own emoji button in a composer toolbar, by its label in any language X ships. */
const BT_EP_X_LABEL = /emoji|emoticon|smiley|絵文字|이모지|이모티콘|表情|эмодзи|емодзі|émoji|إيموجي|रमोजी|อีโมจิ/i;
const BT_EP_SVG = 'http://www.w3.org/2000/svg';
const BT_EP_RING = 'M3 12a9 9 0 1 0 18 0a9 9 0 1 0-18 0';
// Monochrome line icons (24 px grid, stroked in currentColor).
const BT_EP_ICONS = {
  frequent: [BT_EP_RING, 'M12 7.5V12l3 2'],
  smileys: [BT_EP_RING, 'M8.5 14.5a4.5 4.5 0 0 0 7 0', 'M9.2 9.3v1', 'M14.8 9.3v1'],
  people: ['M8.5 7.5a3.5 3.5 0 1 0 7 0a3.5 3.5 0 1 0-7 0', 'M5 20.5a7 7 0 0 1 14 0'],
  nature: ['M5 19C5 10.5 10 5 19.5 4.5 19.5 14 14 19 5 19Z', 'M5 19l8.5-8.5'],
  food: ['M5 9h11v5a5 5 0 0 1-5 5h-1a5 5 0 0 1-5-5V9Z', 'M16 10.5h1.5a2.5 2.5 0 0 1 0 5H16', 'M8.5 3.5V6', 'M12.5 3.5V6'],
  travel: ['M4 13l2.2-5.6A1.5 1.5 0 0 1 7.6 6.5h8.8a1.5 1.5 0 0 1 1.4.9L20 13v4.5H4Z', 'M4 13h16', 'M7 17.5v2', 'M17 17.5v2'],
  activities: [BT_EP_RING, 'M6 4.8c2.7 2 4 4.4 4 7.2s-1.3 5.2-4 7.2', 'M18 4.8c-2.7 2-4 4.4-4 7.2s1.3 5.2 4 7.2'],
  objects: ['M9.5 17.5h5', 'M10.5 20.5h3', 'M12 3.5a5.5 5.5 0 0 0-3.2 10c.7.5 1.2 1.3 1.2 2.2v.3h4v-.3c0-.9.5-1.7 1.2-2.2A5.5 5.5 0 0 0 12 3.5Z'],
  symbols: ['M12 19.5s-7.5-4.4-7.5-9.7A4.3 4.3 0 0 1 12 7.2a4.3 4.3 0 0 1 7.5 2.6c0 5.3-7.5 9.7-7.5 9.7Z'],
  flags: ['M5.5 21V4', 'M5.5 4.5h11.5l-2.5 4 2.5 4H5.5'],
  search: ['M4 10.5a6.5 6.5 0 1 0 13 0a6.5 6.5 0 1 0-13 0', 'M15.5 15.5 20 20'],
  clear: ['M7 7l10 10', 'M17 7 7 17'],
  empty: [BT_EP_RING, 'M9 15.5h6', 'M9.2 9.3v1', 'M14.8 9.3v1'],
  enter: ['M18.5 6v4.5a3 3 0 0 1-3 3H6', 'M9.5 10 6 13.5 9.5 17'],
  gear: ['M9.5 12a2.5 2.5 0 1 0 5 0a2.5 2.5 0 1 0-5 0', 'M12 3.5l1.6 2.1 2.6-.5.9 2.5 2.5.9-.5 2.6 2.1 1.6-2.1 1.6.5 2.6-2.5.9-.9 2.5-2.6-.5L12 20.5l-1.6-2.1-2.6.5-.9-2.5-2.5-.9.5-2.6L2.8 12l2.1-1.6-.5-2.6 2.5-.9.9-2.5 2.6.5Z'],
};

// The toolbar button and the inline `:shortcode` list live in X's document (the list is referenced
// by the editor's aria-activedescendant, which cannot point into a shadow root); `all: revert` keeps
// X's stylesheet off them. The full picker is a shadow root of its own (BT_EP_CARD_CSS).
const BT_EP_CSS = `
  .bt-ep-slot { display: flex; flex: none; align-items: center; }
  .bt-ep-button { all: unset; box-sizing: border-box; display: inline-flex; align-items: center; justify-content: center;
    width: 34px; height: 34px; min-width: 34px; border-radius: 9999px; color: var(--wb-accent, rgb(29,155,240));
    cursor: pointer; transition: background-color .2s; }
  .bt-ep-button svg { display: block; width: 20px; height: 20px; }
  .bt-ep-button:hover, .bt-ep-button[aria-expanded="true"] { background: color-mix(in srgb, currentColor 10%, transparent); }
  .bt-ep-button:focus-visible { box-shadow: 0 0 0 2px currentColor; }
  .bt-ep-ac, .bt-ep-ac :where(:not(svg, svg *)) { all: revert; box-sizing: border-box; }
  .bt-ep-ac { position: fixed; z-index: 2147483640; inset: auto; margin: 0; padding: 0 0 8px; overflow: hidden auto; background: var(--ep-bg); color: var(--ep-text);
    border: 1px solid var(--ep-border); border-radius: 8px; box-shadow: var(--ep-shadow); font: 400 14px/1.25 var(--ep-font);
    -webkit-font-smoothing: antialiased; text-align: left; animation: bt-ep-ac-in .1s cubic-bezier(.2,.8,.2,1); }
  .bt-ep-ac::-webkit-scrollbar { width: 8px; }
  .bt-ep-ac::-webkit-scrollbar-thumb { background: var(--ep-thumb); background-clip: padding-box; border: 2px solid transparent; border-radius: 8px; }
  .bt-ep-ac-head { display: block; padding: 12px 16px 8px; font: 700 12px/16px var(--ep-font); letter-spacing: .02em; text-transform: uppercase;
    color: var(--ep-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .bt-ep-ac-head b { font-weight: 700; color: var(--ep-text); text-transform: none; letter-spacing: 0; }
  .bt-ep-ac-opt { display: flex; align-items: center; gap: 12px; height: 36px; margin: 0 8px; padding: 0 8px; border-radius: 6px; cursor: pointer; }
  .bt-ep-ac-opt[aria-selected="true"] { background: var(--ep-tile); }
  .bt-ep-ac-glyph { flex: none; display: grid; place-items: center; width: 24px; height: 24px; font: 22px/1 ${BT_EP_GLYPH}; }
  .bt-ep-ac-code { flex: 1; min-width: 0; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; color: var(--ep-muted); font-weight: 500; }
  .bt-ep-ac-code mark { background: none; color: var(--ep-text); font-weight: 700; }
  .bt-ep-ac-key { display: none; flex: none; height: 20px; padding: 0 6px; place-items: center; border-radius: 4px; background: var(--ep-bg);
    box-shadow: inset 0 0 0 1px var(--ep-border); color: var(--ep-muted); }
  .bt-ep-ac-opt[aria-selected="true"] .bt-ep-ac-key { display: inline-grid; }
  .bt-ep-ac-key svg { display: block; width: 12px; height: 12px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
  .bt-ep-ac-flag { display: inline-grid; place-items: center; width: 24px; height: 17px; border-radius: 3px; background: var(--ep-tile);
    box-shadow: inset 0 0 0 1px var(--ep-border); color: var(--ep-text); font: 700 9.5px/1 var(--ep-font); letter-spacing: .04em; }
  @keyframes bt-ep-ac-in { from { opacity: 0; transform: translateY(var(--ep-dy, -4px)); } }
  @media (prefers-reduced-motion: reduce) { .bt-ep-ac, .bt-ep-button { animation: none !important; transition: none !important; } }
`;

const BT_EP_CARD_CSS = `
  :host { all: initial; }
  .ep-card { position: absolute; box-sizing: border-box; display: grid; grid-template-columns: 48px minmax(0, 1fr);
    grid-template-rows: 48px minmax(0, 1fr) 48px; width: ${BT_EP_CARD_W}px; height: ${BT_EP_CARD_H}px; overflow: hidden;
    pointer-events: auto; background: var(--ep-bg); color: var(--ep-text); border: 1px solid var(--ep-border); border-radius: 8px;
    box-shadow: var(--ep-shadow); font: 400 14px/1.25 var(--ep-font); -webkit-font-smoothing: antialiased; text-align: left;
    transform-origin: var(--ep-origin, top left); animation: ep-in .12s cubic-bezier(.2,.8,.2,1); }
  .ep-card *, .ep-card *::before, .ep-card *::after { box-sizing: border-box; }
  .ep-card.ep-closing { animation: ep-out .08s ease-in forwards; pointer-events: none; }
  /* Translate only: a scale would raster the whole card twice (at .96, then again at 1). */
  @keyframes ep-in { from { opacity: 0; transform: translateY(var(--ep-dy, -4px)); } }
  @keyframes ep-out { to { opacity: 0; transform: translateY(var(--ep-dy, -4px)); } }
  @keyframes ep-drop { from { opacity: 0; transform: translateY(-4px); } }
  button { font: inherit; color: inherit; margin: 0; }
  svg { display: block; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

  /* Header: search, skin tone. */
  .ep-head { grid-column: 1 / -1; grid-row: 1; position: relative; display: flex; align-items: center; gap: 8px; padding: 0 8px;
    border-bottom: 1px solid var(--ep-border); }
  .ep-search { flex: 1; min-width: 0; display: flex; align-items: center; gap: 4px; height: 32px; padding: 0 4px 0 10px; cursor: text;
    border-radius: 6px; background: var(--ep-input); box-shadow: inset 0 0 0 1px var(--ep-input-line); transition: box-shadow .1s; }
  .ep-search:focus-within { box-shadow: inset 0 0 0 1px var(--ep-accent); }
  .ep-search-input { flex: 1; min-width: 0; height: 100%; padding: 0; border: 0; outline: 0; background: transparent; color: var(--ep-text);
    font: 400 14px/1 var(--ep-font); }
  .ep-search-input::placeholder { color: var(--ep-muted); opacity: 1; }
  .ep-search-icon, .ep-clear { flex: none; display: grid; place-items: center; width: 24px; height: 24px; padding: 0; border: 0;
    border-radius: 4px; background: transparent; color: var(--ep-muted); }
  .ep-search-icon svg { width: 16px; height: 16px; }
  .ep-clear { cursor: pointer; }
  .ep-clear:hover { background: var(--ep-hover); color: var(--ep-text); }
  .ep-clear svg { width: 14px; height: 14px; stroke-width: 2; }
  .ep-search-icon[hidden], .ep-clear[hidden] { display: none; }
  .ep-tone-btn { flex: none; display: grid; place-items: center; width: 32px; height: 32px; padding: 0; border: 0; border-radius: 6px;
    background: transparent; cursor: pointer; font: 22px/1 ${BT_EP_GLYPH}; transition: background-color .1s; }
  .ep-tone-btn:hover, .ep-tone-btn[aria-expanded="true"] { background: var(--ep-hover); }
  .ep-tones { position: absolute; top: 7px; right: 7px; z-index: 4; display: flex; flex-direction: column; gap: 2px; padding: 3px;
    background: var(--ep-bg); border: 1px solid var(--ep-border); border-radius: 8px; box-shadow: var(--ep-shadow-sm);
    animation: ep-drop .1s cubic-bezier(.2,.8,.2,1); }
  .ep-tones[hidden] { display: none; }
  .ep-tone { display: grid; place-items: center; width: 32px; height: 32px; padding: 0; border: 0; border-radius: 6px; background: transparent;
    cursor: pointer; font: 22px/1 ${BT_EP_GLYPH}; }
  .ep-tone:hover { background: var(--ep-hover); }
  .ep-tone[aria-checked="true"] { background: var(--ep-sel); }

  /* Category rail. */
  .ep-rail { grid-column: 1; grid-row: 2 / 4; display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 8px 0;
    overflow: hidden auto; scrollbar-width: none; background: var(--ep-rail); border-right: 1px solid var(--ep-border); }
  .ep-rail-btn { flex: none; display: grid; place-items: center; width: 32px; height: 32px; padding: 0; border: 0; border-radius: 6px;
    background: transparent; color: var(--ep-muted); cursor: pointer; transition: background-color .1s, color .1s; }
  .ep-rail-btn svg { width: 20px; height: 20px; }
  .ep-rail-btn:hover { background: var(--ep-hover); color: var(--ep-text); }
  .ep-rail-btn[aria-current="true"] { background: var(--ep-sel); color: var(--ep-accent); }
  .ep-rail-sep { flex: none; width: 24px; height: 1px; margin: 2px 0; background: var(--ep-border); }

  /* The grid: one virtualized scroller, a sticky header over it, an empty state. */
  .ep-body { grid-column: 2; grid-row: 2; position: relative; min-width: 0; min-height: 0; }
  .ep-scroll { position: absolute; inset: 0; overflow: hidden auto; outline: none; overscroll-behavior: contain; contain: strict; }
  .ep-scroll::-webkit-scrollbar { width: 8px; }
  .ep-scroll::-webkit-scrollbar-thumb { background: var(--ep-thumb); background-clip: padding-box; border: 2px solid transparent; border-radius: 8px; min-height: 32px; }
  .ep-scroll::-webkit-scrollbar-track { background: transparent; }
  .ep-sizer { position: relative; width: 100%; }
  .ep-row { position: absolute; top: 0; left: 0; display: flex; height: ${BT_EP_ROW}px; contain: layout style; }
  .ep-hdr, .ep-sticky { display: flex; align-items: center; gap: 6px; height: ${BT_EP_HEAD}px; padding: 4px 12px 0 var(--ep-hdr-pad, 12px);
    font: 700 12px/16px var(--ep-font); letter-spacing: .02em; text-transform: uppercase; color: var(--ep-muted); white-space: nowrap; }
  .ep-hdr { position: absolute; top: 0; left: 0; right: 0; }
  .ep-hdr svg, .ep-sticky svg { flex: none; width: 16px; height: 16px; stroke-width: 2; }
  .ep-hdr-title { min-width: 0; overflow: hidden; text-overflow: ellipsis; }
  .ep-count { margin-left: auto; font-weight: 600; font-variant-numeric: tabular-nums; letter-spacing: 0; }
  .ep-sticky { position: absolute; top: 0; left: 0; right: 0; z-index: 2; background: var(--ep-bg); pointer-events: none; }
  .ep-sticky.ep-lifted { box-shadow: 0 1px 0 var(--ep-border); }
  .ep-sticky[hidden] { display: none; }
  .ep-cell { flex: none; display: grid; place-items: center; width: ${BT_EP_CELL}px; height: ${BT_EP_CELL}px; border-radius: 6px; cursor: pointer;
    font: 28px/1 ${BT_EP_GLYPH}; user-select: none; -webkit-user-select: none; }
  .ep-cell[aria-selected="true"] { background-color: var(--ep-tile); }
  /* Painted from the glyph atlas (the cell's background image; its sheet comes from a rule per sheet): the text glyph
     stays for copy and assistive tech, unpainted. */
  .ep-cell.ep-bm { background-repeat: no-repeat; background-size: ${BT_EP_BOX * BT_EP_SHEET_COLS}px auto; }
  .ep-cell.ep-bm > span { visibility: hidden; }
  ${Array.from({ length: BT_EP_SHEET_COLS }, (_, i) => `.ep-bm.ep-c${i} { background-position-x: ${(BT_EP_CELL - BT_EP_BOX) / 2 - i * BT_EP_BOX}px; }`).join(' ')}
  ${Array.from({ length: BT_EP_SHEET_SIZE / BT_EP_SHEET_COLS }, (_, i) => `.ep-bm.ep-r${i} { background-position-y: ${(BT_EP_CELL - BT_EP_BOX) / 2 - i * BT_EP_BOX}px; }`).join(' ')}
  .ep-scroll.ep-kbd .ep-cell[aria-selected="true"] { box-shadow: inset 0 0 0 2px var(--ep-accent); }
  .ep-empty { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px;
    padding: 24px; text-align: center; color: var(--ep-muted); font-size: 13px; }
  .ep-empty[hidden] { display: none; }
  .ep-empty svg { width: 40px; height: 40px; margin-bottom: 8px; stroke-width: 1.4; }
  .ep-empty strong { color: var(--ep-text); font-size: 15px; font-weight: 700; max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

  /* Preview bar. */
  .ep-foot { grid-column: 2; grid-row: 3; display: flex; align-items: center; gap: 10px; min-width: 0; padding: 0 8px 0 12px;
    background: var(--ep-rail); border-top: 1px solid var(--ep-border); }
  .ep-preview-glyph { flex: none; display: grid; place-items: center; width: 28px; height: 28px; font: 26px/1 ${BT_EP_GLYPH}; color: var(--ep-muted); }
  .ep-preview-glyph svg { width: 24px; height: 24px; stroke-width: 1.6; }
  .ep-preview-text { flex: 1; min-width: 0; display: flex; align-items: baseline; gap: 8px; overflow: hidden; white-space: nowrap; }
  .ep-preview-code { flex: none; max-width: 100%; overflow: hidden; text-overflow: ellipsis; font-weight: 700; font-size: 14px; color: var(--ep-text); }
  .ep-preview-alt { min-width: 0; overflow: hidden; text-overflow: ellipsis; font-size: 12px; color: var(--ep-muted); }
  .ep-foot.ep-idle .ep-preview-code { font-weight: 600; color: var(--ep-muted); }
  .ep-gear { flex: none; display: grid; place-items: center; width: 28px; height: 28px; padding: 0; border: 0; border-radius: 6px; cursor: pointer;
    background: transparent; color: var(--ep-muted); transition: background-color .1s, color .1s; }
  .ep-gear:hover { background: var(--ep-hover); color: var(--ep-text); }
  .ep-gear svg { width: 18px; height: 18px; stroke-width: 1.7; }
  span.ep-flag { display: grid; place-items: center; width: 28px; height: 20px; border-radius: 4px; background: var(--ep-tile);
    box-shadow: inset 0 0 0 1px var(--ep-border); color: var(--ep-text); font: 700 10px/1 var(--ep-font); letter-spacing: .04em; }
  .ep-preview-glyph span.ep-flag { width: 28px; height: 20px; }
  .ep-sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
  :focus-visible { outline: 2px solid var(--ep-accent); outline-offset: -2px; }
  .ep-search-input:focus-visible, .ep-scroll:focus-visible { outline: none; }
  @media (prefers-reduced-motion: reduce) { .ep-card, .ep-card * { animation: none !important; transition: none !important; } }
`;

let BT_EP_FLAT = null;
function btEpFlat() {
  if (BT_EP_FLAT) return BT_EP_FLAT;
  BT_EP_FLAT = EMOJI_DATA.rows.map(row => ({
    emoji: row[0],
    names: row[1].split(';'),
    tags: row[2] ? row[2].split(' ') : [],
    cat: row[3],
    skin: row[4] === 1,
  }));
  return BT_EP_FLAT;
}

let BT_EP_BY_CAT = null;
function btEpByCat() {
  if (BT_EP_BY_CAT) return BT_EP_BY_CAT;
  BT_EP_BY_CAT = EMOJI_DATA.categories.map(() => []);
  for (const entry of btEpFlat()) BT_EP_BY_CAT[entry.cat]?.push(entry);
  return BT_EP_BY_CAT;
}

function btEpIsEditable(el) {
  if (!el || el.nodeType !== 1) return false;
  const tag = el.tagName;
  if (tag === 'TEXTAREA') return true;
  if (tag === 'INPUT') return /^(text|search)$/i.test(el.type || 'text');
  return Boolean(el.isContentEditable || (el.closest && el.closest('[contenteditable="true"]')));
}

/** An element with a class and attributes; text only ever goes in as text. */
function btEpEl(tag, className, attrs, text) {
  const el = document.createElement(tag);
  if (className) el.className = className;
  if (attrs) for (const key of Object.keys(attrs)) el.setAttribute(key, attrs[key]);
  if (text != null) el.textContent = text;
  return el;
}

function btEpIcon(name) {
  const svg = document.createElementNS(BT_EP_SVG, 'svg');
  svg.setAttribute('viewBox', '0 0 24 24');
  svg.setAttribute('aria-hidden', 'true');
  svg.setAttribute('fill', 'none');
  svg.setAttribute('stroke', 'currentColor');
  svg.setAttribute('stroke-width', '1.8');
  svg.setAttribute('stroke-linecap', 'round');
  svg.setAttribute('stroke-linejoin', 'round');
  for (const d of BT_EP_ICONS[name] || []) {
    const path = document.createElementNS(BT_EP_SVG, 'path');
    path.setAttribute('d', d);
    svg.appendChild(path);
  }
  return svg;
}

let BT_EP_FLAGS_OK = null;
/** Whether this system's emoji font draws flags (Windows' does not: it shows two letters). */
function btEpFlagsRender() {
  if (BT_EP_FLAGS_OK != null) return BT_EP_FLAGS_OK;
  try {
    const ctx = document.createElement('canvas').getContext('2d');
    ctx.font = '32px ' + BT_EP_GLYPH;
    BT_EP_FLAGS_OK = ctx.measureText('🇺🇸').width < ctx.measureText('🇺').width * 1.5;
  } catch {
    BT_EP_FLAGS_OK = true;
  }
  return BT_EP_FLAGS_OK;
}

/**
 * An entry's glyph as an element: the emoji (with the skin tone), or, where the system cannot draw
 * flags, a small chip with the region code instead of two loose letters.
 */
function btEpGlyph(entry, tone, chipClass) {
  const code = btEpFlagsRender() ? null : module.exports.regionCode(entry.emoji);
  if (code) return btEpEl('span', chipClass, null, code);
  return btEpEl('span', null, null, module.exports.withSkinTone(entry.emoji, entry.skin ? tone : 0));
}

/** The text a grid cell draws for `entry` (null for a flag shown as a letter chip). */
function btEpGlyphText(entry, tone) {
  if (!btEpFlagsRender() && module.exports.regionCode(entry.emoji)) return null;
  return module.exports.withSkinTone(entry.emoji, entry.skin ? tone : 0);
}

/**
 * Lifts `el` into the browser's top layer (a manual popover): above every X layer and out of any
 * clipping or transformed ancestor such as X's modal composer, while it stays in that dialog's DOM
 * (so X's focus trap keeps focus in it). False where popovers are not supported.
 */
function btEpTopLayer(el) {
  if (typeof el.showPopover !== 'function') return false;
  try {
    if (!el.hasAttribute('popover')) el.setAttribute('popover', 'manual');
    if (!el.matches(':popover-open')) el.showPopover();
    return true;
  } catch {
    el.removeAttribute('popover');
    return false;
  }
}

// ---- Glyph atlas ----
// A color emoji font (Segoe UI Emoji's gradient glyphs on Windows 11) costs ~3-4 ms of raster per
// glyph, and the compositor's glyph cache is too small to keep a whole emoji grid, so every row
// scrolled into view was rasterized again: 100-2400 ms frames while scrolling the grid. The atlas
// draws each glyph once, in a worker, into sprite sheets (plain images, cheap to raster and cached
// by the compositor), keeps them in IndexedDB for the next page, and the grid paints its cells from
// them. A cell keeps its text glyph (hidden) for copy, tests and the moment before its sheet exists.
const BT_EP_ATLAS_VERSION = 1;
const BT_EP_ATLAS_DB = 'wayBetter-emoji-atlas';
const BT_EP_ATLAS_WORKER = `
const cache = new Map();
onmessage = async event => {
  const { id, glyphs, dpr, family, cols, box, size } = event.data;
  try {
    const s = Math.round(box * dpr);
    const canvas = new OffscreenCanvas(cols * s, Math.ceil(glyphs.length / cols) * s);
    const ctx = canvas.getContext('2d');
    ctx.font = (size * dpr) + 'px ' + family;
    ctx.textAlign = 'center';
    ctx.textBaseline = 'alphabetic';
    // The DOM glyph: a line box of font-size height, centered in the cell, baseline after the half-leading.
    const m = ctx.measureText('\\u{1F600}');
    const ascent = m.fontBoundingBoxAscent / dpr;
    const descent = m.fontBoundingBoxDescent / dpr;
    const baseline = ((box - size) / 2 + (size - ascent - descent) / 2 + ascent) * dpr;
    glyphs.forEach((glyph, i) => ctx.fillText(glyph, ((i % cols) + 0.5) * s, Math.floor(i / cols) * s + baseline));
    postMessage({ id, blob: await canvas.convertToBlob({ type: 'image/png' }) });
  } catch (error) {
    postMessage({ id, error: String(error) });
  }
};`;

class BtEpAtlas {
  constructor() {
    this.dpr = 0;
    /** glyph -> { url, col, row } */
    this.ready = new Map();
    this.queued = new Set();
    this.queue = [];
    this.inFlight = 0;
    this.worker = null;
    this.failed = false;
    this.urls = [];
    this.listeners = new Set();
    this.db = null;
    this.loaded = null;
    this.seq = 0;
    this.sheetSeq = 0;
    this.pending = new Map();
  }

  static supported() {
    return typeof OffscreenCanvas === 'function' && typeof Worker === 'function' && typeof URL.createObjectURL === 'function';
  }

  /** Matches the atlas to the current device pixel ratio (a monitor or zoom change starts over). */
  sync() {
    const dpr = window.devicePixelRatio || 1;
    if (dpr === this.dpr) return;
    this.reset();
    this.dpr = dpr;
    this.loaded = this.loadSaved(dpr);
  }

  reset() {
    for (const url of this.urls) URL.revokeObjectURL(url);
    this.urls = [];
    this.ready.clear();
    this.queued.clear();
    this.queue = [];
    this.pending.clear();
    this.inFlight = 0;
  }

  get(glyph) { return this.ready.get(glyph) || null; }

  /** Sheet id -> blob URL of every sheet drawn so far. */
  sheets() {
    const out = new Map();
    for (const spot of this.ready.values()) out.set(spot.sheet, spot.url);
    return out;
  }

  onReady(fn) { this.listeners.add(fn); return () => this.listeners.delete(fn); }

  /** Queues glyphs (in order); `urgent` puts them ahead of everything else. */
  request(glyphs, urgent = false) {
    if (this.failed || !BtEpAtlas.supported()) return;
    this.sync();
    const fresh = [];
    for (const glyph of glyphs) {
      if (!glyph || this.ready.has(glyph)) continue;
      if (this.queued.has(glyph)) { if (urgent) fresh.push(glyph); continue; }
      this.queued.add(glyph);
      fresh.push(glyph);
    }
    if (!fresh.length) return;
    if (urgent) {
      const set = new Set(fresh);
      this.queue = [...fresh, ...this.queue.filter(glyph => !set.has(glyph))];
    } else this.queue.push(...fresh);
    this.pump();
  }

  pump() {
    if (this.failed) return;
    // Saved sheets first: a glyph already on disk is never drawn again.
    if (this.loaded) { const loaded = this.loaded; this.loaded = null; loaded.then(() => this.pump()); return; }
    while (this.inFlight < 2 && this.queue.length) {
      const glyphs = [];
      while (glyphs.length < BT_EP_SHEET_SIZE && this.queue.length) {
        const glyph = this.queue.shift();
        if (!this.ready.has(glyph)) glyphs.push(glyph);
      }
      if (!glyphs.length) break;
      this.draw(glyphs);
    }
  }

  ensureWorker() {
    if (this.worker) return this.worker;
    const url = URL.createObjectURL(new Blob([BT_EP_ATLAS_WORKER], { type: 'text/javascript' }));
    try {
      this.worker = new Worker(url);
    } finally {
      URL.revokeObjectURL(url);
    }
    this.worker.onmessage = event => this.onSheet(event.data);
    this.worker.onerror = () => this.fail();
    return this.worker;
  }

  fail() {
    this.failed = true;
    this.queue = [];
    this.queued.clear();
    try { this.worker?.terminate(); } catch { /* Gone already. */ }
    this.worker = null;
  }

  draw(glyphs) {
    let worker;
    try { worker = this.ensureWorker(); } catch { this.fail(); return; }
    const id = ++this.seq;
    this.inFlight += 1;
    this.pending.set(id, { glyphs, dpr: this.dpr });
    worker.postMessage({ id, glyphs, dpr: this.dpr, family: BT_EP_GLYPH, cols: BT_EP_SHEET_COLS, box: BT_EP_BOX, size: 28 });
  }

  onSheet(data) {
    const job = this.pending.get(data.id);
    if (!job) return;
    this.pending.delete(data.id);
    this.inFlight = Math.max(0, this.inFlight - 1);
    if (data.error || !data.blob || job.dpr !== this.dpr) {
      if (data.error) this.fail();
      else this.pump();
      return;
    }
    this.add(job.glyphs, data.blob);
    this.save(job.glyphs, data.blob, job.dpr);
    this.pump();
  }

  add(glyphs, blob) {
    const url = URL.createObjectURL(blob);
    this.urls.push(url);
    const sheet = ++this.sheetSeq;
    glyphs.forEach((glyph, i) => {
      this.ready.set(glyph, { url, sheet, col: i % BT_EP_SHEET_COLS, row: Math.floor(i / BT_EP_SHEET_COLS) });
      this.queued.delete(glyph);
    });
    for (const fn of [...this.listeners]) { try { fn(); } catch { /* A closed picker. */ } }
  }

  openDb() {
    if (this.db) return this.db;
    this.db = new Promise(resolve => {
      try {
        const request = indexedDB.open(BT_EP_ATLAS_DB, 1);
        request.onupgradeneeded = () => request.result.createObjectStore('sheets', { keyPath: 'k' });
        request.onsuccess = () => resolve(request.result);
        request.onerror = () => resolve(null);
        request.onblocked = () => resolve(null);
      } catch { resolve(null); }
    });
    return this.db;
  }

  async loadSaved(dpr) {
    const db = await this.openDb();
    if (!db) return;
    const rows = await new Promise(resolve => {
      try {
        const request = db.transaction('sheets').objectStore('sheets').getAll();
        request.onsuccess = () => resolve(request.result || []);
        request.onerror = () => resolve([]);
      } catch { resolve([]); }
    });
    if (dpr !== this.dpr) return;
    for (const row of rows) {
      if (row.v !== BT_EP_ATLAS_VERSION || row.dpr !== dpr || row.family !== BT_EP_GLYPH || !(row.blob instanceof Blob) || !Array.isArray(row.glyphs)) continue;
      this.add(row.glyphs, row.blob);
    }
    // Queued meanwhile but found on disk: nothing to draw.
    this.queue = this.queue.filter(glyph => !this.ready.has(glyph));
  }

  async save(glyphs, blob, dpr) {
    const db = await this.openDb();
    if (!db) return;
    try {
      const k = [BT_EP_ATLAS_VERSION, dpr, glyphs.join('')].join('|');
      db.transaction('sheets', 'readwrite').objectStore('sheets').put({ k, v: BT_EP_ATLAS_VERSION, dpr, family: BT_EP_GLYPH, glyphs, blob });
    } catch { /* Quota or a closed database: the atlas just stays in memory. */ }
  }

  dispose() {
    this.fail();
    this.reset();
    this.listeners.clear();
    this.db?.then(db => { try { db?.close(); } catch { /* Closed. */ } });
    this.db = null;
  }
}

const btEpSheetRule = (id, url) => '.ep-bm[data-sh="' + id + '"] { background-image: url("' + url + '"); }';

/**
 * Paints `cell` from the atlas when its glyph is there; true when it did. No inline style: the
 * cell gets its sheet (one rule per sheet in the picker's style sheet) and its column/row classes.
 */
function btEpPaintCell(cell, atlas, p) {
  const glyph = cell.dataset.g;
  const spot = glyph && atlas && atlas.get(glyph);
  if (!spot) return false;
  if (!p.sheets.has(spot.sheet)) {
    // At the end of the sheet, after the cell rules.
    const sheet = p.atlasSheet || (p.atlasStyle && p.atlasStyle.sheet);
    if (!sheet) return false;
    try { sheet.insertRule(btEpSheetRule(spot.sheet, spot.url), sheet.cssRules.length); } catch { return false; }
    p.sheets.add(spot.sheet);
  }
  cell.dataset.sh = String(spot.sheet);
  cell.className = 'ep-cell ep-bm ep-c' + spot.col + ' ep-r' + spot.row;
  return true;
}

function btEpReducedMotion() {
  try { return window.matchMedia('(prefers-reduced-motion: reduce)').matches; } catch { return false; }
}

module.exports = class EmojiPicker {
  // ---- Pure helpers: no DOM, safe to unit test directly. ----

  /** All emoji rows expanded to objects; memoized. */
  static entries() {
    return btEpFlat();
  }

  /** `{ start, query }` when `text` (everything before the caret) ends in an open `:shortcode` of 2+ chars, else null. */
  static parseTrigger(text) {
    const value = String(text || '');
    const match = BT_EP_TRIGGER.exec(value);
    if (!match) return null;
    const query = match[2];
    return { start: value.length - query.length - 1, query };
  }

  /**
   * Characters to replace for the open `:trigger` that `text` (everything before the caret, read
   * now) ends in, or null when the caret is no longer in that trigger (`start` = where the trigger
   * began when the list opened).
   */
  static replaceLength(text, start) {
    const trigger = EmojiPicker.parseTrigger(text);
    if (!trigger || (start != null && trigger.start !== start)) return null;
    return String(text).length - trigger.start;
  }

  /** `{ start, end, code }` when `text` ends in a just-closed `:shortcode:`, else null. `end` is `text.length`. */
  static parseExact(text) {
    const value = String(text || '');
    const match = BT_EP_EXACT.exec(value);
    if (!match) return null;
    const code = match[2];
    return { start: value.length - code.length - 2, end: value.length, code };
  }

  /** The entry whose primary or alternate shortcode equals `code` (case-insensitive), or null. */
  static findExact(code) {
    const needle = String(code || '').toLowerCase();
    if (!needle) return null;
    for (const entry of btEpFlat()) {
      if (entry.names.some(name => name.toLowerCase() === needle)) return entry;
    }
    return null;
  }

  /**
   * Ranked matches for `query`: exact shortcode first, then shortcode prefix, then a word inside a
   * shortcode (`face` in `smiling_face`), then tag word, then tag substring. Stable within a tier
   * (shorter primary name first).
   */
  static search(query, limit) {
    const q = String(query || '').trim().toLowerCase();
    if (!q) return [];
    const scored = [];
    for (const entry of btEpFlat()) {
      let score = -1;
      for (let i = 0; i < entry.names.length; i += 1) {
        const name = entry.names[i].toLowerCase();
        if (name === q) { score = 100 - i; break; }
        if (name.startsWith(q)) score = Math.max(score, 60 - i);
        else if (name.includes('_' + q)) score = Math.max(score, 30);
      }
      if (score < 0) {
        for (const tag of entry.tags) {
          const lower = tag.toLowerCase();
          if (lower === q) { score = 40; break; }
          if (lower.startsWith(q)) score = Math.max(score, 20);
        }
      }
      if (score < 0 && entry.tags.some(tag => tag.toLowerCase().includes(q))) score = 5;
      if (score >= 0) scored.push({ entry, score });
    }
    scored.sort((a, b) => b.score - a.score || a.entry.names[0].length - b.entry.names[0].length);
    const sliced = limit ? scored.slice(0, limit) : scored;
    return sliced.map(item => item.entry);
  }

  /**
   * `emoji` with a Fitzpatrick modifier inserted after its first code point; `tone` is 0 (none) to 5.
   * A VS16 (U+FE0F) right after the base is dropped: the modifier already forces emoji presentation.
   */
  static withSkinTone(emoji, tone) {
    if (!tone) return emoji;
    const modifier = BT_EP_TONES[tone - 1];
    if (!modifier) return emoji;
    const chars = Array.from(emoji);
    if (!chars.length) return emoji;
    const rest = chars.slice(1);
    if (rest[0] === '️') rest.shift();
    return chars[0] + modifier + rest.join('');
  }

  /**
   * The region a flag emoji stands for: "US" for two regional indicators, "ENG"/"SCT"/"WLS" for
   * the subdivision flags; null for anything else.
   */
  static regionCode(emoji) {
    const points = Array.from(String(emoji || ''), ch => ch.codePointAt(0));
    if (points.length === 2 && points.every(cp => cp >= 0x1F1E6 && cp <= 0x1F1FF)) {
      return String.fromCharCode(...points.map(cp => cp - 0x1F1E6 + 65));
    }
    if (points[0] === 0x1F3F4 && points[points.length - 1] === 0xE007F && points.length > 4) {
      const tag = String.fromCharCode(...points.slice(1, -1).map(cp => cp - 0xE0000)).toUpperCase();
      return /^[A-Z]{2}[A-Z0-9]{1,3}$/.test(tag) ? tag.slice(2) : null;
    }
    return null;
  }

  /** A readable name for an entry: its first shortcode with letters, spaced and capitalized. */
  static displayName(entry) {
    const first = entry.names.find(n => /[a-z]/i.test(n)) || entry.names[0];
    if (/^[a-z]{2}$/.test(first) && entry.cat === EMOJI_DATA.categories.length - 1) return t('flag', { code: first.toUpperCase() });
    const name = first.replace(/_/g, ' ');
    return name.charAt(0).toUpperCase() + name.slice(1);
  }

  /**
   * The virtual list's rows for sections of `counts` emoji: a header row per section, then rows of
   * `cols` cells. `rows[i]` = `{ kind: 'header'|'row', section, top, height, start?, end?, index? }`
   * (`index` counts emoji rows only), `sectionTops[s]` = where section `s` begins,
   * `sectionFirstRow[s]` = the `rows` index of its first emoji row, `height` = total height.
   */
  static layoutRows(counts, cols = BT_EP_COLS, rowHeight = BT_EP_ROW, headerHeight = BT_EP_HEAD) {
    const rows = [];
    const sectionTops = [];
    const sectionFirstRow = [];
    let top = 0;
    let gridRows = 0;
    counts.forEach((count, section) => {
      sectionTops.push(top);
      rows.push({ kind: 'header', section, top, height: headerHeight });
      top += headerHeight;
      sectionFirstRow.push(rows.length);
      for (let start = 0; start < count; start += cols) {
        rows.push({ kind: 'row', section, start, end: Math.min(count, start + cols), top, height: rowHeight, index: gridRows });
        gridRows += 1;
        top += rowHeight;
      }
    });
    return { rows, sectionTops, sectionFirstRow, height: top, gridRows };
  }

  /** `{ start, end }` (end exclusive) of the rows that intersect the viewport, `overscan` px either side. */
  static visibleRange(rows, scrollTop, viewport, overscan = 0) {
    const from = scrollTop - overscan;
    const to = scrollTop + viewport + overscan;
    let lo = 0;
    let hi = rows.length;
    while (lo < hi) {
      const mid = (lo + hi) >> 1;
      if (rows[mid].top + rows[mid].height <= from) lo = mid + 1;
      else hi = mid;
    }
    let end = lo;
    while (end < rows.length && rows[end].top < to) end += 1;
    return { start: lo, end };
  }

  /** The section whose area contains `scrollTop` (the one the sticky header names). */
  static sectionAt(sectionTops, scrollTop) {
    let section = 0;
    for (let i = 0; i < sectionTops.length; i += 1) {
      if (sectionTops[i] <= scrollTop + 0.5) section = i;
      else break;
    }
    return section;
  }

  /**
   * Keyboard movement in a grid of sections with `counts` cells, `cols` per row. `pos` is
   * `{ section, index }` or null (then the first cell). Arrows move in 2D and flow across sections
   * keeping the column, Home/End go to the row's ends (with `ctrl`: the first/last cell),
   * PageUp/PageDown jump to the previous/next section. Returns the new position (the same object's
   * values when there is nowhere to go), or null when there are no cells.
   */
  static moveInGrid(counts, pos, key, cols = BT_EP_COLS, ctrl = false) {
    const filled = [];
    counts.forEach((count, section) => { if (count > 0) filled.push(section); });
    if (!filled.length) return null;
    if (!pos || !(counts[pos.section] > 0)) return { section: filled[0], index: 0 };
    const { section, index } = pos;
    const count = counts[section];
    const col = index % cols;
    const at = filled.indexOf(section);
    const next = filled[at + 1];
    const prev = filled[at - 1];
    const lastRowStart = c => Math.floor((c - 1) / cols) * cols;
    switch (key) {
      case 'ArrowRight':
        if (index + 1 < count) return { section, index: index + 1 };
        return next != null ? { section: next, index: 0 } : { section, index };
      case 'ArrowLeft':
        if (index > 0) return { section, index: index - 1 };
        return prev != null ? { section: prev, index: counts[prev] - 1 } : { section, index };
      case 'ArrowDown':
        if (index + cols < count) return { section, index: index + cols };
        if (index - col < lastRowStart(count)) return { section, index: count - 1 };
        return next != null ? { section: next, index: Math.min(col, counts[next] - 1) } : { section, index };
      case 'ArrowUp':
        if (index - cols >= 0) return { section, index: index - cols };
        return prev != null ? { section: prev, index: Math.min(lastRowStart(counts[prev]) + col, counts[prev] - 1) } : { section, index };
      case 'PageDown':
        return next != null ? { section: next, index: Math.min(col, counts[next] - 1) } : { section, index: Math.min(lastRowStart(count) + col, count - 1) };
      case 'PageUp':
        if (index >= cols) return { section, index: col };
        return prev != null ? { section: prev, index: Math.min(col, counts[prev] - 1) } : { section, index };
      case 'Home':
        return ctrl ? { section: filled[0], index: 0 } : { section, index: index - col };
      case 'End': {
        if (ctrl) { const last = filled[filled.length - 1]; return { section: last, index: counts[last] - 1 }; }
        return { section, index: Math.min(index - col + cols - 1, count - 1) };
      }
      default:
        return { section, index };
    }
  }

  /**
   * Where a `width` x `height` popup goes next to `anchor` (a rect) without covering `avoid` (the
   * text being typed; defaults to the anchor) inside a `viewWidth` x `viewHeight` pane: below when it
   * fits, else above, else on the roomier side shrunk to at least `minHeight`; only a pane too
   * small for that makes it overlap. Left-aligned with the anchor, clamped `margin` px inside.
   * Returns `{ left, top, width, height, side: 'below'|'above'|'over' }`.
   */
  static placeCard(anchor, avoid, width, height, viewWidth, viewHeight, minHeight = 0, margin = 8, gap = 8) {
    const w = Math.max(0, Math.min(width, viewWidth - margin * 2));
    const left = Math.round(Math.max(margin, Math.min(anchor.left, viewWidth - margin - w)));
    const area = avoid || anchor;
    const belowTop = Math.max(anchor.bottom, area.bottom) + gap;
    const aboveBottom = Math.min(anchor.top, area.top) - gap;
    const below = viewHeight - margin - belowTop;
    const above = aboveBottom - margin;
    const full = Math.max(0, Math.min(height, viewHeight - margin * 2));
    let side;
    let h;
    if (below >= height) { side = 'below'; h = height; }
    else if (above >= height) { side = 'above'; h = height; }
    else if (Math.max(below, above) >= Math.min(minHeight, full)) {
      side = below >= above ? 'below' : 'above';
      h = Math.min(height, Math.max(below, above));
    } else {
      const top = Math.max(margin, Math.min(belowTop, viewHeight - margin - full));
      return { left, top: Math.round(top), width: w, height: Math.round(full), side: 'over' };
    }
    // An anchor scrolled out of view must not put the card off screen.
    const top = Math.max(margin, Math.min(side === 'below' ? belowTop : aboveBottom - h, viewHeight - margin - h));
    return { left, top: Math.round(top), width: w, height: Math.round(h), side };
  }

  /** How many columns of `cell` px fit in a grid `width` px wide (with the side padding), at least `min`. */
  static columnsFor(width, cell = BT_EP_CELL, min = BT_EP_MIN_COLS) {
    return Math.max(min, Math.floor((Math.max(0, width) - BT_EP_PAD_L - BT_EP_PAD_R) / cell));
  }

  /** Whether `el` is X's own emoji button in a composer toolbar (found by its label, any language). */
  static isXEmojiButton(el) {
    if (!el || el.nodeType !== 1 || !el.closest) return false;
    if (el.classList && el.classList.contains('bt-ep-button')) return false;
    if (!(el.tagName === 'BUTTON' || el.getAttribute('role') === 'button')) return false;
    if (!el.closest('[data-testid="toolBar"]')) return false;
    return BT_EP_X_LABEL.test(el.getAttribute('aria-label') || '');
  }

  // ---- Runtime ----

  start() {
    const api = window.wayBetter.api;
    i18n = api.i18n || null;
    if (i18n) i18n.register(MESSAGES);
    this.api = api;
    this.store = api.storage('emoji-picker');
    this.scope = api.scope();
    this.tone = Math.max(0, Math.min(5, Number(this.store.get('tone', 0)) || 0));
    this.recent = Array.isArray(this.store.get('recent', [])) ? this.store.get('recent', []) : [];
    this.freq = this.store.get('freq', {}) || {};
    /** X's emoji button opens this picker (one picker, not two); off: X's stays and ours gets its own button. */
    this.replaceX = this.store.get('replaceX', true) !== false;
    this.autocomplete = null;
    this.picker = null;
    this.settings = null;
    this.stopped = false;
    /** Picker hosts on the page, including ones still animating out. */
    this.hosts = new Set();
    /** Editors where X showed its own emoji typeahead; ours stays out of them. */
    this.nativeEditors = new WeakSet();

    this.scope.css('emoji-picker', BT_EP_CSS);
    this.atlas = new BtEpAtlas();
    this.scope.defer(() => this.atlas.dispose());
    // Anything left behind by an earlier run (buttons would make mountButton skip their toolbar).
    for (const stale of document.querySelectorAll('.bt-ep-slot, .bt-ep-button, .bt-ep-ac, wb-emoji-picker')) stale.remove();
    this.scope.on(document, 'input', event => this.onInput(event), true);
    this.scope.on(document, 'keydown', event => this.onKeyDown(event), true);
    this.scope.on(document, 'pointerdown', event => this.onPointerDown(event), true);
    this.scope.on(document, 'mousedown', event => this.onXButtonMouseDown(event), true);
    this.scope.on(document, 'click', event => this.onXButtonClick(event), true);
    this.scope.on(document, 'selectionchange', () => this.onSelectionChange());
    this.scope.on(window, 'resize', () => this.schedulePosition());
    this.scope.on(document, 'scroll', () => this.schedulePosition(), true);
    this.scope.observe('[data-testid="toolBar"]', toolbar => this.mountButton(toolbar));
    this.scope.onRouteChange(() => { this.closeAutocomplete(); this.closePicker({ immediate: true }); });
    this.scope.onThemeChange(() => this.repaint());
    this.scope.defer(() => {
      this.closeAutocomplete();
      this.closePicker({ immediate: true });
      for (const host of this.hosts) host.remove();
      this.hosts.clear();
      try { this.settings?.close(); } catch { /* Already closed. */ }
      this.settings = null;
    });
    this.warmGlyphs();
  }

  /**
   * Chromium shapes a color-emoji glyph slowly the first time it lays it out (about 1 ms each), which
   * would make the first open take ~100 ms. Lay out what an open shows first (Frequently used and the
   * top of every category) in small idle-time chunks, off screen, so opening is instant.
   */
  warmGlyphs() {
    const queue = [...new Set([...this.frequentEntries(), ...btEpByCat().flatMap(list => list.slice(0, 72))].map(e => e.emoji))];
    const idle = typeof window.requestIdleCallback === 'function'
      ? fn => window.requestIdleCallback(fn, { timeout: 5000 })
      : fn => setTimeout(fn, 120);
    let stopped = false;
    this.scope.defer(() => { stopped = true; });
    let first = true;
    const step = () => {
      if (stopped || !document.body) return;
      const chunk = queue.splice(0, 40);
      if (!chunk.length) { this.prime(); this.warmAtlas(); return; }
      const probe = btEpEl('span', null, { 'aria-hidden': 'true' }, chunk.join(''));
      probe.style.cssText = 'all:initial;position:fixed;left:0;top:0;width:1px;height:1px;overflow:hidden;visibility:hidden;contain:strict;pointer-events:none;font:28px/1 ' + BT_EP_GLYPH;
      if (first) {
        first = false;
        const text = btEpEl('span', null, null, 'FREQUENTLY USED SMILEYS & EMOTION Search emoji Pick an emoji');
        text.style.cssText = 'font:700 12px/1 ' + this.themeFont();
        probe.appendChild(text);
      }
      document.body.appendChild(probe);
      void probe.offsetWidth;
      probe.remove();
      idle(step);
    };
    idle(step);
  }

  /** Draws what an open shows first into the atlas (from disk when saved), once this page is on screen. */
  warmAtlas() {
    if (this.stopped) return;
    if (document.visibilityState !== 'visible') {
      const later = () => { if (document.visibilityState === 'visible') { document.removeEventListener('visibilitychange', later); this.warmAtlas(); } };
      this.scope.on(document, 'visibilitychange', later);
      return;
    }
    const entries = [...this.frequentEntries(), ...btEpByCat().flatMap(list => list.slice(0, 72))];
    this.atlas.request(entries.map(entry => btEpGlyphText(entry, this.tone)));
  }

  stop() {
    this.stopped = true;
    this.scope.dispose();
    this.autocomplete = null;
    this.picker = null;
  }

  // ---- Persistence ----

  saveTone(tone) {
    this.tone = Math.max(0, Math.min(5, tone || 0));
    this.store.set('tone', this.tone);
  }

  recordUsage(entry) {
    const name = entry.names[0];
    this.recent = [name, ...this.recent.filter(n => n !== name)].slice(0, 36);
    this.store.set('recent', this.recent);
    this.freq[name] = (this.freq[name] || 0) + 1;
    this.store.set('freq', this.freq);
  }

  recentEntries() {
    return this.recent.map(name => EmojiPicker.findExact(name)).filter(Boolean);
  }

  /** Most used first; equal counts go by recency. */
  frequentEntries(limit = BT_EP_COLS * 2) {
    const recency = name => { const i = this.recent.indexOf(name); return i < 0 ? 1e6 : i; };
    return Object.keys(this.freq)
      .sort((a, b) => this.freq[b] - this.freq[a] || recency(a) - recency(b))
      .slice(0, limit)
      .map(name => EmojiPicker.findExact(name))
      .filter(Boolean);
  }

  // ---- Theme ----

  themeFont() {
    try { const theme = this.api.theme.current(); return theme?.fonts?.dialog?.stack || theme?.font || 'system-ui, sans-serif'; } catch { return 'system-ui, sans-serif'; }
  }

  /** The active theme as `--ep-*` custom properties on `el` (the picker host or the inline list). */
  paint(el) {
    let theme = null;
    try { theme = this.api.theme.current(); } catch { theme = null; }
    const c = theme?.colors || { bg: '#ffffff', surface: '#f7f9f9', elevated: '#eff3f4', border: '#cfd9de', text: '#0f1419', muted: '#536471', accent: '#1d9bf0', onAccent: '#ffffff' };
    const dark = theme ? theme.mode === 'dark' : false;
    const font = theme?.fonts?.dialog?.stack || theme?.font || 'system-ui, sans-serif';
    const mono = theme?.fonts?.mono?.stack || 'ui-monospace, "Cascadia Mono", Consolas, monospace';
    const mix = (color, pct, base = 'transparent') => `color-mix(in srgb, ${color} ${pct}%, ${base})`;
    const vars = {
      '--ep-bg': c.bg, '--ep-border': c.border, '--ep-text': c.text, '--ep-muted': c.muted, '--ep-accent': c.accent,
      '--ep-font': font, '--ep-mono': mono,
      // The rail and the preview bar: one step off the card, like Discord's darker sidebar.
      '--ep-rail': dark ? c.surface : mix(c.text, 3.5, c.bg),
      '--ep-input': dark ? c.elevated : mix(c.text, 5, c.bg),
      '--ep-input-line': dark ? 'transparent' : mix(c.text, 6, 'transparent'),
      // The hover tile: an opaque surface step, crisp on any page background.
      '--ep-tile': dark ? mix(c.text, 12, c.bg) : mix(c.text, 8, c.bg),
      '--ep-hover': mix(c.text, dark ? 10 : 7),
      '--ep-sel': mix(c.accent, dark ? 20 : 13),
      '--ep-thumb': mix(c.text, dark ? 28 : 22),
      '--ep-shadow': dark
        ? '0 0 0 1px rgba(0,0,0,.5), 0 8px 24px rgba(0,0,0,.55), 0 0 16px rgba(255,255,255,.07)'
        : '0 0 0 1px rgba(15,20,25,.04), 0 8px 28px rgba(15,20,25,.18), 0 2px 6px rgba(15,20,25,.08)',
      '--ep-shadow-sm': dark ? '0 6px 16px rgba(0,0,0,.6)' : '0 6px 16px rgba(15,20,25,.16)',
    };
    for (const name of Object.keys(vars)) el.style.setProperty(name, vars[name]);
    el.style.setProperty('color-scheme', dark ? 'dark' : 'light');
  }

  repaint() {
    if (this.picker) this.paint(this.picker.host);
    if (this.autocomplete) this.paint(this.autocomplete.list);
    for (const button of document.querySelectorAll('.bt-ep-button')) this.matchXColor(button);
  }

  // ---- Caret / text reading ----

  caretContext(target) {
    if (target.tagName === 'TEXTAREA' || target.tagName === 'INPUT') {
      const pos = target.selectionStart == null ? target.value.length : target.selectionStart;
      return { plain: true, target, text: target.value.slice(0, pos), pos };
    }
    const root = target.closest('[contenteditable="true"]');
    if (!root) return null;
    const sel = window.getSelection();
    if (!sel || !sel.rangeCount || !sel.isCollapsed) return null;
    const anchor = sel.anchorNode;
    if (!root.contains(anchor)) return null;
    let text = '';
    try {
      const range = document.createRange();
      range.selectNodeContents(root);
      range.setEnd(anchor, sel.anchorOffset);
      text = range.toString();
    } catch {
      return null;
    }
    return { plain: false, target, root, anchor, anchorOffset: sel.anchorOffset, text };
  }

  caretRect(context) {
    if (context.plain) {
      // A plain field has no caret rect: open the list under the field, not over its text.
      const rect = context.target.getBoundingClientRect();
      return { left: rect.left, right: rect.left, top: rect.bottom, bottom: rect.bottom };
    }
    const sel = window.getSelection();
    if (sel && sel.rangeCount) {
      const rect = EmojiPicker.rangeRect(sel.getRangeAt(0));
      if (rect) return rect;
    }
    const rect = context.root.getBoundingClientRect();
    return { left: rect.left, right: rect.left, top: rect.top, bottom: rect.top };
  }

  /** The collapsed start of `range` on screen, or null when it has no box. */
  static rangeRect(range) {
    if (!range) return null;
    try {
      const probe = range.cloneRange();
      probe.collapse(true);
      const rects = probe.getClientRects();
      if (rects.length) return rects[0];
      const rect = probe.getBoundingClientRect();
      if (rect && (rect.width || rect.height || rect.top)) return rect;
    } catch { /* Detached. */ }
    return null;
  }

  /** Puts the caret after the last text of a contenteditable editor and reads it; null when impossible. */
  caretAtEnd(editor) {
    const root = editor.closest && editor.closest('[contenteditable="true"]');
    if (!root) return null;
    const walker = document.createTreeWalker(root, NodeFilter.SHOW_TEXT);
    let last = null;
    for (let node = walker.nextNode(); node; node = walker.nextNode()) last = node;
    // No text yet: inside the innermost last element (Draft.js keeps a <br> in an empty block).
    let holder = root;
    while (!last && holder.lastElementChild && holder.lastElementChild.tagName !== 'BR') holder = holder.lastElementChild;
    try {
      const range = document.createRange();
      if (last) range.setStart(last, last.length);
      else range.setStart(holder, 0);
      range.collapse(true);
      const selection = window.getSelection();
      selection.removeAllRanges();
      selection.addRange(range);
    } catch {
      return null;
    }
    return this.caretContext(editor);
  }

  // ---- Insertion (focus + execCommand insertText, like the rest of the app) ----

  replaceBack(context, backChars, replacement) {
    if (context.plain) {
      const target = context.target;
      const end = context.pos;
      const start = Math.max(0, end - backChars);
      target.focus();
      target.setSelectionRange(start, end);
      if (!document.execCommand('insertText', false, replacement)) {
        const value = target.value;
        target.value = value.slice(0, start) + replacement + value.slice(end);
        const at = start + replacement.length;
        target.setSelectionRange(at, at);
        target.dispatchEvent(new Event('input', { bubbles: true }));
      }
      return;
    }
    const walker = document.createTreeWalker(context.root, NodeFilter.SHOW_TEXT);
    const nodes = [];
    let node = walker.nextNode();
    while (node) { nodes.push(node); node = walker.nextNode(); }
    let idx = nodes.indexOf(context.anchor);
    if (idx === -1 && backChars > 0) return;
    let remaining = backChars;
    let atNode = context.anchor;
    let atOffset = context.anchorOffset;
    while (remaining > 0) {
      if (atOffset >= remaining) { atOffset -= remaining; remaining = 0; break; }
      remaining -= atOffset;
      idx -= 1;
      if (idx < 0) { atOffset = 0; break; }
      atNode = nodes[idx];
      atOffset = atNode.length;
    }
    const range = document.createRange();
    range.setStart(atNode, atOffset);
    range.setEnd(context.anchor, context.anchorOffset);
    const sel = window.getSelection();
    sel.removeAllRanges();
    sel.addRange(range);
    context.root.focus();
    if (!document.execCommand('insertText', false, replacement)) {
      range.deleteContents();
      range.insertNode(document.createTextNode(replacement));
    }
  }

  insertEntry(entry, context, backChars) {
    const emoji = EmojiPicker.withSkinTone(entry.emoji, entry.skin ? this.tone : 0);
    this.replaceBack(context, backChars == null ? 0 : backChars, emoji);
    this.recordUsage(entry);
  }

  // ---- Inline autocomplete ----

  onInput(event) {
    if (event.isComposing) return;
    const target = event.target;
    if (!btEpIsEditable(target) || this.nativeEditors.has(target)) return;
    const context = this.caretContext(target);
    if (!context) { this.closeAutocomplete(); return; }
    const exact = EmojiPicker.parseExact(context.text);
    if (exact && EmojiPicker.findExact(exact.code)) {
      this.closeAutocomplete();
      // Let X's editor (Draft.js/React) handle this input first, then swap on a fresh caret read.
      requestAnimationFrame(() => {
        if (this.stopped) return;
        const now = this.caretContext(target);
        const still = now && EmojiPicker.parseExact(now.text);
        if (still && still.code === exact.code) this.insertEntry(EmojiPicker.findExact(still.code), now, still.end - still.start);
      });
      return;
    }
    const trigger = EmojiPicker.parseTrigger(context.text);
    if (!trigger) { this.closeAutocomplete(); return; }
    this.openAutocomplete(target, context, trigger);
  }

  openAutocomplete(target, context, trigger) {
    const items = EmojiPicker.search(trigger.query, 8);
    if (!items.length) { this.closeAutocomplete(); return; }
    if (!this.autocomplete) {
      const list = btEpEl('div', 'bt-ep-ac', { role: 'listbox', 'aria-label': t('suggestions') });
      list.id = 'bt-ep-auto-' + Math.random().toString(36).slice(2);
      // Choosing on mousedown keeps focus (and the caret) in the editor.
      list.addEventListener('mousedown', event => {
        event.preventDefault();
        const option = event.target.closest && event.target.closest('.bt-ep-ac-opt');
        if (option) this.chooseAutocomplete(Number(option.dataset.index));
      });
      list.addEventListener('pointermove', event => {
        const option = event.target.closest && event.target.closest('.bt-ep-ac-opt');
        if (option) this.selectAutocomplete(Number(option.dataset.index));
      });
      this.autocomplete = { target, list, items: [], options: [], active: 0, start: 0 };
    }
    const ac = this.autocomplete;
    this.paint(ac.list);
    ac.target = target;
    ac.items = items;
    ac.active = 0;
    ac.start = trigger.start;
    const query = trigger.query.toLowerCase();
    const head = btEpEl('div', 'bt-ep-ac-head', { 'aria-hidden': 'true' }, t('matching') + ' ');
    head.appendChild(btEpEl('b', null, null, ':' + trigger.query));
    ac.options = items.map((entry, index) => {
      const option = btEpEl('div', 'bt-ep-ac-opt', { role: 'option', 'aria-selected': index === 0 ? 'true' : 'false' });
      option.id = ac.list.id + '-' + index;
      option.dataset.index = String(index);
      option.setAttribute('aria-label', EmojiPicker.displayName(entry));
      const glyph = btEpEl('span', 'bt-ep-ac-glyph');
      glyph.appendChild(btEpGlyph(entry, this.tone, 'bt-ep-ac-flag'));
      const code = btEpEl('span', 'bt-ep-ac-code');
      const name = entry.names.find(n => n.toLowerCase().startsWith(query)) || entry.names[0];
      code.append(':');
      if (name.toLowerCase().startsWith(query)) {
        code.appendChild(btEpEl('mark', null, null, name.slice(0, query.length)));
        code.append(name.slice(query.length) + ':');
      } else code.append(name + ':');
      const key = btEpEl('span', 'bt-ep-ac-key', { 'aria-hidden': 'true' });
      key.appendChild(btEpIcon('enter'));
      option.append(glyph, code, key);
      return option;
    });
    ac.list.replaceChildren(head, ...ac.options);
    // Inside X's modal composer when there is one (content outside an aria-modal dialog is hidden
    // from screen readers).
    const container = (target.closest && target.closest('[aria-modal="true"]')) || document.body;
    if (ac.list.parentNode !== container) container.appendChild(ac.list);
    btEpTopLayer(ac.list);
    let origin = { left: 0, top: 0 };
    if (container !== document.body) {
      // A transformed dialog is the containing block of a fixed element: measure where 0,0 lands.
      ac.list.style.left = '0px';
      ac.list.style.top = '0px';
      const at = ac.list.getBoundingClientRect();
      origin = { left: at.left, top: at.top };
    }
    const rect = this.caretRect(context);
    const height = 36 + items.length * 36 + 8 + 2;
    const place = EmojiPicker.placeCard({ left: rect.left - 20, right: rect.right, top: rect.top, bottom: rect.bottom }, null,
      BT_EP_AC_W, height, window.innerWidth, window.innerHeight, 120, 8, 6);
    ac.list.style.left = (place.left - origin.left) + 'px';
    ac.list.style.top = (place.top - origin.top) + 'px';
    ac.list.style.width = place.width + 'px';
    ac.list.style.maxHeight = place.height + 'px';
    ac.list.style.setProperty('--ep-dy', place.side === 'above' ? '4px' : '-4px');
    if (btEpIsEditable(target) && target.closest) {
      target.setAttribute('aria-activedescendant', ac.list.id + '-0');
    }
    // X's post composer has its own `:emoji` typeahead: where it shows up, step aside for good.
    setTimeout(() => {
      const native = document.querySelector('[id^="typeaheadDropdown"]');
      if (native && native.getBoundingClientRect().height > 0 && this.autocomplete && this.autocomplete.target === target) {
        this.nativeEditors.add(target);
        this.closeAutocomplete();
      }
    }, 180);
  }

  selectAutocomplete(index) {
    const ac = this.autocomplete;
    if (!ac || !ac.options[index] || index === ac.active) return;
    ac.options[ac.active]?.setAttribute('aria-selected', 'false');
    ac.active = index;
    const current = ac.options[index];
    current.setAttribute('aria-selected', 'true');
    current.scrollIntoView({ block: 'nearest' });
    if (ac.target.setAttribute) ac.target.setAttribute('aria-activedescendant', current.id);
  }

  moveAutocomplete(delta) {
    const ac = this.autocomplete;
    if (!ac || !ac.items.length) return;
    this.selectAutocomplete((ac.active + delta + ac.items.length) % ac.items.length);
  }

  /** Replaces the `:trigger` with option `index`; false when the caret left the trigger (nothing inserted). */
  chooseAutocomplete(index) {
    const ac = this.autocomplete;
    if (!ac || !ac.items[index]) return false;
    const target = ac.target;
    const context = this.caretContext(target);
    this.closeAutocomplete();
    if (!context) return false;
    // Re-read the trigger at the caret now: it may have moved since the list opened.
    const length = EmojiPicker.replaceLength(context.text, ac.start);
    if (length == null) return false;
    this.insertEntry(ac.items[index], context, length);
    return true;
  }

  /** Closes the list once the caret leaves the `:trigger` it was opened for. */
  onSelectionChange() {
    const ac = this.autocomplete;
    if (!ac) return;
    const context = this.caretContext(ac.target);
    if (!context || EmojiPicker.replaceLength(context.text, ac.start) == null) this.closeAutocomplete();
  }

  closeAutocomplete() {
    const ac = this.autocomplete;
    if (!ac) return;
    ac.list.remove();
    // X's own typeahead uses this attribute too: only clear it when it points at our list.
    const current = ac.target && ac.target.getAttribute ? ac.target.getAttribute('aria-activedescendant') : null;
    if (current && current.startsWith(ac.list.id)) ac.target.removeAttribute('aria-activedescendant');
    this.autocomplete = null;
  }

  // ---- Global shortcut, X's emoji button, our toolbar button ----

  onKeyDown(event) {
    // Keys that commit an IME composition belong to the IME.
    if (event.isComposing || event.keyCode === 229) return;
    if (this.autocomplete) {
      const ac = this.autocomplete;
      // Only keys typed in the editor the list belongs to, without modifiers (Ctrl+Enter still posts).
      const inEditor = event.target === ac.target || (ac.target.contains && ac.target.contains(event.target));
      const plain = !event.ctrlKey && !event.metaKey && !event.altKey && !event.shiftKey;
      const listKey = ['Escape', 'ArrowDown', 'ArrowUp', 'Enter', 'Tab'].includes(event.key);
      if (['ArrowLeft', 'ArrowRight', 'Home', 'End', 'PageUp', 'PageDown'].includes(event.key) || (listKey && (!inEditor || !plain))) {
        this.closeAutocomplete();
        return;
      }
      if (event.key === 'Escape') { event.preventDefault(); event.stopPropagation(); this.closeAutocomplete(); return; }
      if (event.key === 'ArrowDown') { event.preventDefault(); event.stopPropagation(); this.moveAutocomplete(1); return; }
      if (event.key === 'ArrowUp') { event.preventDefault(); event.stopPropagation(); this.moveAutocomplete(-1); return; }
      if (event.key === 'Enter' || event.key === 'Tab') {
        // The key is taken only when an emoji actually went in.
        if (this.chooseAutocomplete(ac.active)) {
          event.preventDefault();
          event.stopPropagation();
        }
        return;
      }
      return;
    }
    if (this.picker && !this.picker.host.isConnected) this.closePicker({ immediate: true });
    if (this.picker) {
      // Keys typed inside the picker are handled (and kept from X) by the picker itself.
      if (event.composedPath().includes(this.picker.host)) return;
      if (event.key === 'Escape') {
        event.preventDefault();
        event.stopPropagation();
        this.closePicker({ restoreFocus: true });
        return;
      }
    }
    if (!event.ctrlKey || !event.shiftKey || event.altKey || event.metaKey) return;
    // event.code works on every keyboard layout; the key is only taken when a picker opens or closes.
    if (event.code !== 'KeyE') return;
    if (!this.togglePicker()) return;
    event.preventDefault();
    event.stopPropagation();
  }

  onPointerDown(event) {
    const path = event.composedPath ? event.composedPath() : [event.target];
    if (this.autocomplete && !path.includes(this.autocomplete.list) && event.target !== this.autocomplete.target) {
      this.closeAutocomplete();
    }
    const p = this.picker;
    if (p && !path.includes(p.host) && !(p.anchor !== p.editor && path.includes(p.anchor))) this.closePicker();
  }

  /** X's emoji button, when it opens this picker: keep focus (and the caret) in the editor. */
  onXButtonMouseDown(event) {
    if (!this.replaceX) return;
    const button = event.target.closest && event.target.closest('button, [role="button"]');
    if (button && EmojiPicker.isXEmojiButton(button)) event.preventDefault();
  }

  /** X's emoji button opens this picker instead of X's (setting, on by default). */
  onXButtonClick(event) {
    if (!this.replaceX) return;
    const button = event.target.closest && event.target.closest('button, [role="button"]');
    if (!button || !EmojiPicker.isXEmojiButton(button)) return;
    event.preventDefault();
    event.stopImmediatePropagation();
    this.toggleFromButton(button, button.closest('[data-testid="toolBar"]'));
  }

  toggleFromButton(button, toolbar) {
    if (this.picker && this.picker.anchor === button) { this.closePicker({ restoreFocus: true }); return; }
    const editor = this.editorNear(toolbar);
    if (editor) this.openPicker(button, editor);
  }

  /** X's emoji button in this toolbar row, if it has one. */
  xEmojiButton(toolbar) {
    for (const el of toolbar.querySelectorAll('button[aria-label], [role="button"][aria-label]')) {
      if (EmojiPicker.isXEmojiButton(el)) return el;
    }
    return null;
  }

  /** Our button takes the color X gives its own toolbar icons (the theme's accent, or X's). */
  matchXColor(button) {
    const row = button.closest('[role="tablist"]') || button.parentElement?.parentElement;
    const icon = row && [...row.querySelectorAll('svg')].find(svg => !button.contains(svg));
    if (!icon) return;
    const color = getComputedStyle(icon).color;
    if (color) button.style.color = color;
  }

  mountButton(toolbar) {
    const xButton = this.xEmojiButton(toolbar);
    const existing = toolbar.querySelector('.bt-ep-slot');
    // One picker, one button: when X's button opens ours, ours is not added next to it.
    if (this.replaceX && xButton) { existing?.remove(); return; }
    if (existing) return;
    const row = toolbar.querySelector('[role="tablist"]') || toolbar.firstElementChild || toolbar;
    const slot = btEpEl('div', 'bt-ep-slot', { role: 'presentation' });
    const button = btEpEl('button', 'bt-ep-button', { type: 'button', title: t('buttonTitle'), 'aria-label': t('picker'), 'aria-haspopup': 'dialog', 'aria-expanded': 'false' });
    button.appendChild(btEpIcon('smileys'));
    button.addEventListener('mousedown', event => event.preventDefault());
    button.addEventListener('click', event => {
      event.preventDefault();
      event.stopPropagation();
      this.toggleFromButton(button, toolbar);
    });
    slot.appendChild(button);
    // Right after X's own emoji button (its presentation wrapper), else at the end of the row.
    let after = xButton;
    while (after && after.parentElement && after.parentElement !== row) after = after.parentElement;
    if (after && after.parentElement === row) after.after(slot);
    else row.appendChild(slot);
    this.matchXColor(button);
    // Removed on stop(), like everything else this plugin adds.
    this.scope.add(slot);
  }

  remountButtons() {
    for (const slot of document.querySelectorAll('.bt-ep-slot')) slot.remove();
    for (const toolbar of document.querySelectorAll('[data-testid="toolBar"]')) this.mountButton(toolbar);
  }

  setReplaceX(on) {
    this.replaceX = !!on;
    this.store.set('replaceX', this.replaceX);
    this.remountButtons();
  }

  /** The picker's settings (the gear in the preview bar), in the app's themed dialog. */
  openSettings() {
    const ui = this.api.ui;
    if (!ui || typeof ui.dialog !== 'function' || typeof ui.h !== 'function') return;
    this.closePicker({ restoreFocus: true, immediate: true });
    const h = ui.h;
    const replace = h('input', { type: 'checkbox', checked: this.replaceX });
    this.settings = ui.dialog({
      title: t('title'),
      content: body => body.append(
        h('label', { class: 'wb-check' }, replace, h('span', null, t('replaceX'),
          h('small', null, t('replaceXHint')))),
      ),
      actions: [
        { label: t('cancel') },
        { label: t('save'), tone: 'primary', default: true, onClick: () => { this.setReplaceX(replace.checked); } },
      ],
      onClose: () => { this.settings = null; },
    });
  }

  /** The single composer/reply/DM text box that shares this toolbar's compose area, if exactly one. */
  editorNear(toolbar) {
    let area = toolbar && toolbar.parentElement;
    for (let depth = 0; area && depth < 40; depth += 1, area = area.parentElement) {
      const editors = area.querySelectorAll(BT_EP_EDITABLE);
      if (editors.length === 1) return editors[0];
      // Several (a thread being written): the one that has the caret.
      if (editors.length > 1) {
        const anchor = window.getSelection()?.anchorNode;
        return anchor ? Array.from(editors).find(editor => editor.contains(anchor)) || null : null;
      }
      if (area.matches && area.matches('main,body,[data-testid="primaryColumn"]')) return null;
    }
    return document.activeElement && btEpIsEditable(document.activeElement) ? document.activeElement : null;
  }

  /** The emoji button (X's or ours) of the toolbar that belongs to `editor`, so Ctrl+Shift+E opens in the same place. */
  buttonFor(editor) {
    let area = editor.parentElement;
    for (let depth = 0; area && depth < 24; depth += 1, area = area.parentElement) {
      const toolbars = area.querySelectorAll('[data-testid="toolBar"]');
      if (toolbars.length) {
        if (toolbars.length !== 1 || this.editorNear(toolbars[0]) !== editor) return null;
        return toolbars[0].querySelector('.bt-ep-button') || this.xEmojiButton(toolbars[0]);
      }
      if (area.matches && area.matches('main,body')) return null;
    }
    return null;
  }

  /** Opens or closes the picker; false when there was nothing to do (no picker, no editor). */
  togglePicker() {
    if (this.picker) { this.closePicker({ restoreFocus: true }); return true; }
    const active = document.activeElement;
    const editor = btEpIsEditable(active) ? active : this.editorNear(document.querySelector('[data-testid="toolBar"]') || document.body);
    if (!editor) return false;
    const button = this.buttonFor(editor);
    this.openPicker(button || editor, editor);
    return true;
  }

  // ---- Full picker ----

  /** Sections for the list: search results, or Frequently used (when there is history) + categories. */
  buildSections(query, cols = BT_EP_COLS) {
    if (query) return [{ id: 'search', title: t('results'), icon: 'search', entries: EmojiPicker.search(query) }];
    const sections = [];
    const frequent = this.frequentEntries(cols * 2);
    if (frequent.length) sections.push({ id: 'frequent', title: t('frequent'), icon: 'frequent', entries: frequent });
    EMOJI_DATA.categories.forEach((title, i) => sections.push({ id: 'cat' + i, title: t('cat' + i), icon: BT_EP_CAT_ICONS[i], entries: btEpByCat()[i] }));
    return sections;
  }

  /**
   * One hidden open and close once the glyphs are warm, so the first real open finds the card's
   * styles, fonts and icons ready too. Skipped while anything of ours is on screen.
   */
  /**
   * The card's styles for `shadow`. Constructed sheets, built once and adopted by every picker this
   * page opens: parsed once instead of per open, not subject to X's CSP, and they stay with the
   * card wherever its host goes (into X's modal, the top layer). The card CSS, then the atlas rules
   * (one per sheet, shared, grown as sheets arrive). Without constructable sheets: <style>
   * elements (`nodes`) with their own copy of the atlas rules.
   */
  cardStyles(shadow) {
    if (this.sheets === undefined) {
      this.sheets = null;
      try {
        const card = new CSSStyleSheet();
        card.replaceSync(BT_EP_CARD_CSS);
        this.sheets = { card, atlas: new CSSStyleSheet(), ids: new Set() };
      } catch { /* No constructable sheets: <style> elements below. */ }
    }
    const atlasRules = () => [...this.atlas.sheets()].filter(([id]) => !this.sheets || !this.sheets.ids.has(id));
    if (this.sheets) {
      const shared = this.sheets;
      try {
        for (const [id, url] of atlasRules()) { shared.atlas.insertRule(btEpSheetRule(id, url), shared.atlas.cssRules.length); shared.ids.add(id); }
        shadow.adoptedStyleSheets = [shared.card, shared.atlas];
        return { nodes: [], atlasSheet: shared.atlas, atlasStyle: null, sheets: shared.ids };
      } catch { /* Refused (another realm): <style> elements. */ }
    }
    const card = document.createElement('style');
    card.textContent = BT_EP_CARD_CSS;
    const atlas = document.createElement('style');
    const rules = [...this.atlas.sheets()];
    atlas.textContent = rules.map(([id, url]) => btEpSheetRule(id, url)).join(' ');
    // A <style> element has its sheet once connected: cells read it when they are painted.
    return { nodes: [card, atlas], atlasSheet: null, atlasStyle: atlas, sheets: new Set(rules.map(([id]) => id)) };
  }

  prime() {
    if (this.picker || this.autocomplete || !document.body) return;
    try {
      this.openPicker(document.body, document.body, { prime: true });
    } finally {
      this.closePicker({ immediate: true });
    }
  }

  openPicker(anchor, editor, opts = {}) {
    this.closePicker({ immediate: true });
    this.closeAutocomplete();
    // The search box takes focus, which moves the selection out of a contenteditable editor:
    // remember where the caret was so a click can put the emoji there.
    let savedRange = null;
    const selection = window.getSelection();
    if (selection && selection.rangeCount && editor.contains(selection.anchorNode)) savedRange = selection.getRangeAt(0).cloneRange();

    const uid = 'ep' + Math.random().toString(36).slice(2, 8);
    const host = document.createElement('wb-emoji-picker');
    host.style.cssText = 'all:initial;position:fixed;inset:0;z-index:2147483640;pointer-events:none;display:block;';
    const shadow = host.attachShadow({ mode: 'open' });
    const styles = this.cardStyles(shadow);
    const card = btEpEl('div', 'ep-card', { role: 'dialog', 'aria-label': t('picker') });

    // Header: search + skin tone.
    const head = btEpEl('div', 'ep-head');
    const searchBox = btEpEl('label', 'ep-search');
    const search = btEpEl('input', 'ep-search-input', { type: 'text', placeholder: t('search'), 'aria-label': t('search'), autocomplete: 'off', spellcheck: 'false' });
    search.setAttribute('aria-controls', uid + '-grid');
    const searchIcon = btEpEl('span', 'ep-search-icon', { 'aria-hidden': 'true' });
    searchIcon.appendChild(btEpIcon('search'));
    const clear = btEpEl('button', 'ep-clear', { type: 'button', 'aria-label': t('clearSearch'), title: t('clear'), tabindex: '-1' });
    clear.appendChild(btEpIcon('clear'));
    clear.hidden = true;
    searchBox.append(search, searchIcon, clear);
    const toneBtn = btEpEl('button', 'ep-tone-btn', { type: 'button', 'aria-haspopup': 'true', 'aria-expanded': 'false' });
    const tones = btEpEl('div', 'ep-tones', { role: 'radiogroup', 'aria-label': t('skinTone') });
    tones.hidden = true;
    const toneButtons = BT_EP_TONE_NAMES.map((english, tone) => {
      const name = t('tone' + tone);
      const button = btEpEl('button', 'ep-tone', { type: 'button', role: 'radio', 'aria-label': name, title: name, tabindex: '-1' },
        EmojiPicker.withSkinTone(BT_EP_TONE_BASE, tone));
      button.addEventListener('click', () => this.pickTone(tone));
      tones.appendChild(button);
      return button;
    });
    head.append(searchBox, toneBtn, tones);

    // Category rail (left).
    const rail = btEpEl('div', 'ep-rail', { role: 'toolbar', 'aria-label': t('categories'), 'aria-orientation': 'vertical' });

    // The grid: one virtualized scroller, a sticky header over it, an empty state.
    const body = btEpEl('div', 'ep-body');
    const sticky = btEpEl('div', 'ep-sticky', { 'aria-hidden': 'true' });
    const stickyIcon = btEpEl('span');
    const stickyTitle = btEpEl('span', 'ep-hdr-title');
    const stickyCount = btEpEl('span', 'ep-count');
    sticky.append(stickyIcon, stickyTitle, stickyCount);
    const scroll = btEpEl('div', 'ep-scroll', { role: 'grid', tabindex: '0', 'aria-label': t('grid') });
    scroll.id = uid + '-grid';
    const sizer = btEpEl('div', 'ep-sizer');
    scroll.appendChild(sizer);
    const empty = btEpEl('div', 'ep-empty', { role: 'status' });
    empty.hidden = true;
    const emptyTitle = btEpEl('strong');
    empty.append(btEpIcon('empty'), emptyTitle, btEpEl('span', null, null, t('emptyHint')));
    body.append(scroll, sticky, empty);

    // Preview bar.
    const foot = btEpEl('div', 'ep-foot ep-idle');
    const previewGlyph = btEpEl('div', 'ep-preview-glyph', { 'aria-hidden': 'true' });
    const previewText = btEpEl('div', 'ep-preview-text');
    const previewName = btEpEl('span', 'ep-preview-code');
    const previewCode = btEpEl('span', 'ep-preview-alt');
    previewText.append(previewName, previewCode);
    const gear = btEpEl('button', 'ep-gear', { type: 'button', 'aria-label': t('settingsLabel'), title: t('settings'), tabindex: '-1' });
    gear.appendChild(btEpIcon('gear'));
    gear.addEventListener('click', () => this.openSettings());
    foot.append(previewGlyph, previewText, gear);
    const live = btEpEl('div', 'ep-sr', { 'aria-live': 'polite', 'aria-atomic': 'true' });

    card.append(live, head, rail, body, foot);
    shadow.append(...styles.nodes, card);

    const p = {
      uid, host, shadow, card, search, searchIcon, clear, toneBtn, tones, toneButtons, rail, railButtons: [],
      scroll, sizer, sticky, stickyIcon, stickyTitle, stickyCount, empty, emptyTitle, foot, previewGlyph, previewName, previewCode, live,
      anchor, editor, savedRange, sections: [], counts: [], layout: null, rendered: new Map(), active: null, query: '',
      viewport: 300, cols: BT_EP_COLS, pad: BT_EP_PAD_L, raf: 0, stickySection: -1, railId: null,
      atlasSheet: styles.atlasSheet, atlasStyle: styles.atlasStyle, sheets: styles.sheets,
      onSearch: null, missing: null, offAtlas: null, atlasRaf: 0, positionRaf: 0, side: null,
    };
    this.picker = p;

    // Rail: Frequently used (when there is history), a divider, the nine categories.
    for (const section of this.buildSections('')) {
      const button = btEpEl('button', 'ep-rail-btn', { type: 'button', 'aria-label': section.title, title: section.title, tabindex: '-1' });
      button.dataset.id = section.id;
      button.appendChild(btEpIcon(section.icon));
      button.addEventListener('click', () => this.jumpTo(section.id));
      rail.appendChild(button);
      p.railButtons.push(button);
      if (section.id === 'frequent') rail.appendChild(btEpEl('span', 'ep-rail-sep', { 'aria-hidden': 'true' }));
    }
    this.updateToneButton();

    const onSearch = () => { const has = !!search.value; clear.hidden = !has; searchIcon.hidden = has; this.setSections(search.value.trim()); };
    p.onSearch = onSearch;
    search.addEventListener('input', onSearch);
    clear.addEventListener('click', () => { search.value = ''; onSearch(); search.focus(); });
    toneBtn.addEventListener('click', () => (tones.hidden ? this.openTones() : this.closeTones(true)));
    card.addEventListener('keydown', event => this.onPickerKey(event));
    // keyup/keypress stay inside too: X's shortcuts see the host, not an editable field.
    for (const type of ['keyup', 'keypress']) card.addEventListener(type, event => event.stopPropagation());
    // Clicks never move focus out of the search box (except into it or the tone popover).
    card.addEventListener('mousedown', event => {
      const target = event.composedPath()[0];
      if (target !== search && !(target.closest && target.closest('.ep-tones, .ep-tone-btn'))) event.preventDefault();
    });
    card.addEventListener('pointerdown', event => {
      const target = event.composedPath()[0];
      if (!tones.hidden && !(target.closest && target.closest('.ep-tones, .ep-tone-btn'))) this.closeTones(false);
    });
    scroll.addEventListener('scroll', () => {
      if (!p.raf) p.raf = requestAnimationFrame(() => { p.raf = 0; if (this.picker === p) this.renderWindow(); });
    }, { passive: true });
    scroll.addEventListener('pointermove', event => {
      p.scroll.classList.remove('ep-kbd');
      const cell = event.target.closest && event.target.closest('.ep-cell');
      if (!cell) return;
      const pos = { section: Number(cell.dataset.s), index: Number(cell.dataset.i) };
      if (!p.active || p.active.section !== pos.section || p.active.index !== pos.index) this.setActive(pos);
    });
    scroll.addEventListener('click', event => {
      const cell = event.target.closest && event.target.closest('.ep-cell');
      if (!cell) return;
      const entry = p.sections[Number(cell.dataset.s)]?.entries[Number(cell.dataset.i)];
      if (entry) this.chooseFromPicker(entry, event.shiftKey);
    });
    scroll.addEventListener('focus', () => {
      if (!p.active) this.setActive(this.firstVisiblePos(), { scroll: true });
    });

    this.paint(host);
    if (opts.prime) host.style.visibility = 'hidden';
    // Inside X's modal composer, so X's focus trap keeps the search box focused.
    (editor.closest('[aria-modal="true"]') || document.body).appendChild(host);
    btEpTopLayer(host);
    this.hosts.add(host);
    if (!opts.prime && anchor.classList && anchor.classList.contains('bt-ep-button')) anchor.setAttribute('aria-expanded', 'true');
    this.positionPicker();
    if (this.picker !== p) return;
    this.measureGrid();
    this.setSections('');
    if (opts.prime) { void card.offsetHeight; return; }
    // Cells paint from the atlas as its sheets arrive (at most once a frame); everything else is queued behind the rows in view.
    p.offAtlas = this.atlas.onReady(() => {
      if (p.atlasRaf || this.picker !== p) return;
      p.atlasRaf = requestAnimationFrame(() => { p.atlasRaf = 0; if (this.picker === p) this.paintFromAtlas(); });
    });
    // (After the first frame: listing ~1850 glyphs is not part of opening.)
    setTimeout(() => { if (this.picker === p) this.atlas.request(p.sections.flatMap(section => section.entries.map(entry => btEpGlyphText(entry, this.tone)))); }, 50);
    search.focus({ preventScroll: true });
  }

  /** Reads the grid's width once: how many columns fit and the side padding that centers them. Returns whether it changed. */
  measureGrid() {
    const p = this.picker;
    p.viewport = p.scroll.clientHeight || 300;
    const width = p.scroll.clientWidth || (BT_EP_CARD_W - 58);
    const cols = EmojiPicker.columnsFor(width);
    const pad = Math.max(BT_EP_PAD_L, Math.floor(BT_EP_PAD_L + (width - BT_EP_PAD_L - BT_EP_PAD_R - cols * BT_EP_CELL) / 2));
    p.sticky.style.right = Math.max(0, p.scroll.offsetWidth - p.scroll.clientWidth) + 'px';
    p.card.style.setProperty('--ep-hdr-pad', (pad + 4) + 'px');
    const changed = cols !== p.cols || pad !== p.pad;
    p.cols = cols;
    p.pad = pad;
    p.scroll.setAttribute('aria-colcount', String(cols));
    return changed;
  }

  /**
   * Places the card under the composer toolbar (or above the text box when there is no room below),
   * lined up with the button that opened it; closes it when that button has scrolled out of view.
   */
  positionPicker() {
    const p = this.picker;
    if (!p) return;
    if (!p.host.isConnected || !p.anchor.isConnected || !p.editor.isConnected) { this.closePicker({ immediate: true }); return; }
    const editorRect = p.editor.getBoundingClientRect();
    let anchorRect;
    let avoid;
    if (p.anchor === p.editor) {
      const caret = EmojiPicker.rangeRect(p.savedRange);
      anchorRect = caret ? { left: caret.left - 16, right: caret.right, top: caret.top, bottom: caret.bottom } : editorRect;
      // Keep a short editor fully visible; in a long one, keep at least the caret's line.
      avoid = editorRect.height <= 160 || !caret ? editorRect : anchorRect;
    } else {
      anchorRect = p.anchor.getBoundingClientRect();
      avoid = editorRect;
      // Scrolled away (or hidden): the picker goes with it.
      if (p.anchor !== document.body && (anchorRect.bottom <= 0 || anchorRect.top >= window.innerHeight || !anchorRect.width)) {
        this.closePicker({ immediate: true });
        return;
      }
    }
    // The host is fixed at inset 0; inside a transformed ancestor its box is the containing block.
    const origin = p.host.getBoundingClientRect();
    const place = EmojiPicker.placeCard(anchorRect, avoid, BT_EP_CARD_W, BT_EP_CARD_H, window.innerWidth, window.innerHeight, BT_EP_CARD_MIN);
    const s = p.card.style;
    s.left = (place.left - origin.left) + 'px';
    s.top = (place.top - origin.top) + 'px';
    s.width = place.width + 'px';
    s.height = place.height + 'px';
    // Grows out of the button it belongs to.
    const ox = Math.round(Math.max(0, Math.min(place.width, anchorRect.left + (anchorRect.right - anchorRect.left) / 2 - place.left)));
    s.setProperty('--ep-origin', ox + 'px ' + (place.side === 'above' ? '100%' : '0'));
    s.setProperty('--ep-dy', place.side === 'above' ? '4px' : '-4px');
    p.side = place.side;
  }

  schedulePosition() {
    const p = this.picker;
    if (!p || p.positionRaf) return;
    p.positionRaf = requestAnimationFrame(() => {
      p.positionRaf = 0;
      if (this.picker !== p) return;
      const size = p.card.style.width + 'x' + p.card.style.height;
      this.positionPicker();
      if (this.picker !== p) return;
      // Reading the grid right after writing the card's box forces a layout: only when that box changed.
      if (size !== p.card.style.width + 'x' + p.card.style.height && this.measureGrid()) this.setSections(p.query);
      else this.renderWindow();
    });
  }

  setSections(query) {
    const p = this.picker;
    if (!p) return;
    p.query = query;
    p.sections = this.buildSections(query, p.cols);
    p.counts = p.sections.map(section => section.entries.length);
    p.layout = EmojiPicker.layoutRows(p.counts.some(Boolean) ? p.counts : [], p.cols, BT_EP_ROW, BT_EP_HEAD);
    p.sizer.style.height = p.layout.height + 8 + 'px';
    p.scroll.setAttribute('aria-rowcount', String(p.layout.gridRows));
    for (const row of p.rendered.values()) row.remove();
    p.rendered.clear();
    p.active = null;
    p.stickySection = -1;
    p.scroll.scrollTop = 0;
    const total = p.counts.reduce((a, b) => a + b, 0);
    p.empty.hidden = total > 0;
    p.sticky.hidden = total === 0;
    if (!total) p.emptyTitle.textContent = t('noMatch', { query });
    this.renderWindow();
    if (query && total) this.setActive({ section: 0, index: 0 }, { announce: t('resultCount', { count: total }) });
    else {
      this.setActive(null);
      if (query) p.live.textContent = t('noResults');
    }
  }

  /** Renders the rows in view (plus a screen of overscan) and nothing else. */
  renderWindow() {
    const p = this.picker;
    if (!p || !p.layout) return;
    const top = p.scroll.scrollTop;
    const { start, end } = EmojiPicker.visibleRange(p.layout.rows, top, p.viewport, 160);
    for (const [index, row] of p.rendered) {
      if (index < start || index >= end) { row.remove(); p.rendered.delete(index); }
    }
    p.missing = [];
    for (let index = start; index < end; index += 1) {
      if (p.rendered.has(index)) continue;
      const row = this.buildRow(index);
      p.rendered.set(index, row);
      p.sizer.appendChild(row);
    }
    if (p.missing.length) this.atlas.request(p.missing, true);
    // aria-activedescendant only ever names a cell that exists.
    if (p.active) {
      const id = p.uid + '-' + p.active.section + '-' + p.active.index;
      if (p.shadow.getElementById(id)) p.scroll.setAttribute('aria-activedescendant', id);
      else p.scroll.removeAttribute('aria-activedescendant');
    }
    this.updateSticky(top);
  }

  buildRow(index) {
    const p = this.picker;
    const row = p.layout.rows[index];
    const section = p.sections[row.section];
    if (row.kind === 'header') {
      const header = btEpEl('div', 'ep-hdr', { role: 'presentation' });
      header.append(btEpIcon(section.icon), btEpEl('span', 'ep-hdr-title', null, section.title));
      if (section.id === 'search') header.append(btEpEl('span', 'ep-count', null, String(section.entries.length)));
      header.style.transform = 'translateY(' + row.top + 'px)';
      return header;
    }
    const el = btEpEl('div', 'ep-row', { role: 'row', 'aria-rowindex': String(row.index + 1) });
    el.style.transform = 'translate(' + p.pad + 'px, ' + row.top + 'px)';
    for (let i = row.start; i < row.end; i += 1) {
      const entry = section.entries[i];
      const selected = p.active && p.active.section === row.section && p.active.index === i;
      const cell = btEpEl('div', 'ep-cell', {
        role: 'gridcell', id: p.uid + '-' + row.section + '-' + i, 'aria-colindex': String(i - row.start + 1),
        'aria-selected': selected ? 'true' : 'false', 'aria-label': EmojiPicker.displayName(entry),
      });
      cell.dataset.s = String(row.section);
      cell.dataset.i = String(i);
      const glyph = btEpGlyphText(entry, this.tone);
      if (glyph) {
        cell.appendChild(btEpEl('span', null, null, glyph));
        cell.dataset.g = glyph;
        if (!btEpPaintCell(cell, this.atlas, p)) p.missing?.push(glyph);
      } else cell.appendChild(btEpGlyph(entry, this.tone, 'ep-flag'));
      el.appendChild(cell);
    }
    return el;
  }

  /** Cells in view whose sheet has arrived switch from the text glyph to the atlas image. */
  paintFromAtlas() {
    const p = this.picker;
    for (const cell of p.sizer.querySelectorAll('.ep-cell[data-g]:not(.ep-bm)')) btEpPaintCell(cell, this.atlas, p);
  }

  updateSticky(top) {
    const p = this.picker;
    const s = EmojiPicker.sectionAt(p.layout.sectionTops, top);
    const section = p.sections[s];
    if (!section) return;
    if (p.stickySection !== s) {
      p.stickySection = s;
      const icon = btEpIcon(section.icon);
      p.stickyIcon.replaceWith(icon);
      p.stickyIcon = icon;
      p.stickyTitle.textContent = section.title;
      p.stickyCount.textContent = section.id === 'search' ? String(section.entries.length) : '';
    }
    // The next section's header pushes this one up as it arrives.
    const next = p.layout.sectionTops[s + 1];
    const offset = next == null ? 0 : Math.min(0, next - top - BT_EP_HEAD);
    p.sticky.style.transform = offset ? 'translateY(' + offset + 'px)' : '';
    p.sticky.classList.toggle('ep-lifted', top > 1);
    this.setRail(p.query ? null : section.id);
  }

  setRail(id) {
    const p = this.picker;
    if (p.railId === id) return;
    p.railId = id;
    for (const button of p.railButtons) button.setAttribute('aria-current', button.dataset.id === id ? 'true' : 'false');
    // Roving tabindex: Tab into the rail lands on the current category.
    const focusable = p.railButtons.find(b => b.dataset.id === id) || p.railButtons[0];
    for (const button of p.railButtons) button.tabIndex = button === focusable ? 0 : -1;
  }

  /** Scrolls a category to the top (the rail); a search is cleared first. */
  jumpTo(id) {
    const p = this.picker;
    if (!p) return;
    if (p.query) { p.search.value = ''; p.onSearch(); }
    const index = p.sections.findIndex(section => section.id === id);
    if (index < 0) return;
    p.scroll.scrollTop = p.layout.sectionTops[index];
    this.renderWindow();
    return index;
  }

  firstVisiblePos() {
    const p = this.picker;
    const top = p.scroll.scrollTop;
    const row = p.layout.rows.find(r => r.kind === 'row' && r.top + r.height > top + BT_EP_HEAD);
    return row ? { section: row.section, index: row.start } : EmojiPicker.moveInGrid(p.counts, null, 'Home', p.cols);
  }

  scrollToPos(pos) {
    const p = this.picker;
    const row = p.layout.rows[p.layout.sectionFirstRow[pos.section] + Math.floor(pos.index / p.cols)];
    if (!row) return;
    const top = p.scroll.scrollTop;
    let next = top;
    // Clear of the sticky header above, and of the bottom edge.
    if (row.top - BT_EP_HEAD < top) next = row.top - BT_EP_HEAD;
    else if (row.top + row.height > top + p.viewport) next = row.top + row.height - p.viewport;
    if (next !== top) {
      p.scroll.scrollTop = Math.max(0, next);
      this.renderWindow();
    }
  }

  setActive(pos, opts = {}) {
    const p = this.picker;
    if (!p) return;
    if (p.active) p.shadow.getElementById(p.uid + '-' + p.active.section + '-' + p.active.index)?.setAttribute('aria-selected', 'false');
    p.active = pos;
    if (!pos) {
      p.scroll.removeAttribute('aria-activedescendant');
      this.updatePreview(null);
      return;
    }
    if (opts.scroll) this.scrollToPos(pos);
    const cell = p.shadow.getElementById(p.uid + '-' + pos.section + '-' + pos.index);
    if (cell) {
      cell.setAttribute('aria-selected', 'true');
      p.scroll.setAttribute('aria-activedescendant', cell.id);
    } else p.scroll.removeAttribute('aria-activedescendant');
    const entry = p.sections[pos.section].entries[pos.index];
    this.updatePreview(entry);
    if (opts.announce != null) p.live.textContent = opts.announce;
  }

  updatePreview(entry) {
    const p = this.picker;
    p.foot.classList.toggle('ep-idle', !entry);
    p.previewGlyph.replaceChildren();
    if (!entry) {
      p.previewGlyph.appendChild(btEpIcon('smileys'));
      p.previewName.textContent = t('pick');
      p.previewCode.textContent = t('shiftClick');
      return;
    }
    p.previewGlyph.appendChild(btEpGlyph(entry, this.tone, 'ep-flag'));
    p.previewName.textContent = ':' + entry.names[0] + ':';
    p.previewCode.textContent = entry.names.slice(1, 3).map(name => ':' + name + ':').join(' ');
  }

  moveActive(key, ctrl) {
    const p = this.picker;
    if (!p.active) { this.setActive(this.firstVisiblePos(), { scroll: true }); return; }
    const next = EmojiPicker.moveInGrid(p.counts, p.active, key, p.cols, ctrl);
    if (!next) return;
    // Up from the first row goes back to the search box.
    if (key === 'ArrowUp' && next.section === p.active.section && next.index === p.active.index) { p.search.focus(); return; }
    // PageUp/PageDown into another category bring its header to the top, like the rail.
    if ((key === 'PageUp' || key === 'PageDown') && next.section !== p.active.section) {
      p.scroll.scrollTop = p.layout.sectionTops[next.section];
      this.renderWindow();
      this.setActive(next);
      return;
    }
    this.setActive(next, { scroll: true });
  }

  onPickerKey(event) {
    const p = this.picker;
    if (!p) return;
    // Keys typed in the picker are ours: X's shortcuts never see them.
    event.stopPropagation();
    if (event.isComposing || event.keyCode === 229) return;
    const key = event.key;
    if (event.ctrlKey && event.shiftKey && !event.altKey && !event.metaKey && event.code === 'KeyE') {
      event.preventDefault();
      this.closePicker({ restoreFocus: true });
      return;
    }
    if (!p.tones.hidden) { this.onTonesKey(event); return; }
    if (key === 'Escape') { event.preventDefault(); this.closePicker({ restoreFocus: true }); return; }
    const active = p.shadow.activeElement;
    const railFocus = p.railButtons.includes(active);
    if (key === 'Tab') {
      event.preventDefault();
      const rail = p.railButtons.find(b => b.tabIndex === 0) || p.railButtons[0];
      const order = [p.search, p.toneBtn, p.scroll, rail];
      const at = railFocus ? 3 : Math.max(0, order.indexOf(active));
      const target = order[(at + (event.shiftKey ? order.length - 1 : 1)) % order.length];
      if (target === p.scroll) p.scroll.classList.add('ep-kbd');
      target.focus({ preventScroll: true });
      return;
    }
    if (active === p.search) {
      if ((key === 'ArrowDown' || key === 'PageDown') && p.counts.some(Boolean)) {
        event.preventDefault();
        p.scroll.classList.add('ep-kbd');
        const had = !!p.active;
        p.scroll.focus({ preventScroll: true });
        if (had && !(p.query && p.active.section === 0 && p.active.index === 0 && key === 'ArrowDown')) this.moveActive(key, false);
        else if (!p.active) this.setActive(this.firstVisiblePos(), { scroll: true });
      } else if (key === 'Enter' && p.active) {
        event.preventDefault();
        this.chooseActive(event.shiftKey);
      }
      return;
    }
    if (active === p.scroll) {
      if (BT_EP_NAV.includes(key)) {
        event.preventDefault();
        p.scroll.classList.add('ep-kbd');
        this.moveActive(key, event.ctrlKey || event.metaKey);
      } else if (key === 'Enter' || key === ' ') {
        event.preventDefault();
        if (p.active) this.chooseActive(event.shiftKey);
      } else if (key === 'Backspace') {
        event.preventDefault();
        p.search.focus();
        p.search.value = p.search.value.slice(0, -1);
        p.onSearch();
      } else if (key.length === 1 && !event.ctrlKey && !event.metaKey && !event.altKey) {
        // Typing anywhere in the grid searches.
        event.preventDefault();
        p.search.focus();
        p.search.value += key;
        p.onSearch();
      }
      return;
    }
    if (railFocus) {
      const at = p.railButtons.indexOf(active);
      let next = -1;
      if (key === 'ArrowDown') next = (at + 1) % p.railButtons.length;
      else if (key === 'ArrowUp') next = (at - 1 + p.railButtons.length) % p.railButtons.length;
      else if (key === 'Home') next = 0;
      else if (key === 'End') next = p.railButtons.length - 1;
      if (next >= 0) {
        event.preventDefault();
        for (const button of p.railButtons) button.tabIndex = -1;
        p.railButtons[next].tabIndex = 0;
        p.railButtons[next].focus();
      } else if (key === 'ArrowRight' || key === 'Enter' || key === ' ') {
        // Into that category's first emoji.
        event.preventDefault();
        const section = this.jumpTo(active.dataset.id);
        p.scroll.classList.add('ep-kbd');
        p.scroll.focus({ preventScroll: true });
        if (section != null) this.setActive({ section, index: 0 }, { scroll: true });
      }
    }
  }

  chooseActive(keepOpen) {
    const p = this.picker;
    const entry = p && p.active && p.sections[p.active.section]?.entries[p.active.index];
    if (entry) this.chooseFromPicker(entry, keepOpen);
  }

  /** Inserts at the caret the editor had when the picker opened; Shift keeps the picker open. */
  chooseFromPicker(entry, keepOpen) {
    const p = this.picker;
    if (!p) return;
    const back = p.shadow.activeElement;
    let context = this.caretContext(p.editor);
    if (!context && p.savedRange) {
      p.editor.focus({ preventScroll: true });
      const selection = window.getSelection();
      selection.removeAllRanges();
      selection.addRange(p.savedRange);
      context = this.caretContext(p.editor);
    }
    if (!context) {
      // The editor never had a caret (the button was clicked first): insert at the end of its text.
      p.editor.focus({ preventScroll: true });
      context = this.caretAtEnd(p.editor);
    }
    if (context) this.insertEntry(entry, context, 0);
    if (!keepOpen) { this.closePicker(); return; }
    const selection = window.getSelection();
    if (selection && selection.rangeCount && p.editor.contains(selection.anchorNode)) p.savedRange = selection.getRangeAt(0).cloneRange();
    (back || p.search).focus({ preventScroll: true });
    p.live.textContent = t('added', { name: EmojiPicker.displayName(entry) });
  }

  // ---- Skin tone popover ----

  updateToneButton() {
    const p = this.picker;
    p.toneBtn.textContent = EmojiPicker.withSkinTone(BT_EP_TONE_BASE, this.tone);
    p.toneBtn.setAttribute('aria-label', t('toneNamed', { tone: t('tone' + this.tone) }));
    p.toneBtn.title = t('toneNamed', { tone: t('tone' + this.tone) });
    p.toneButtons.forEach((button, tone) => button.setAttribute('aria-checked', tone === this.tone ? 'true' : 'false'));
  }

  openTones() {
    const p = this.picker;
    p.tones.hidden = false;
    p.toneBtn.setAttribute('aria-expanded', 'true');
    p.toneButtons.forEach((button, tone) => { button.tabIndex = tone === this.tone ? 0 : -1; });
    p.toneButtons[this.tone].focus();
  }

  closeTones(focusButton) {
    const p = this.picker;
    if (!p || p.tones.hidden) return;
    p.tones.hidden = true;
    p.toneBtn.setAttribute('aria-expanded', 'false');
    if (focusButton) p.toneBtn.focus();
  }

  onTonesKey(event) {
    const p = this.picker;
    const at = p.toneButtons.indexOf(p.shadow.activeElement);
    const key = event.key;
    if (key === 'Escape' || key === 'Tab') { event.preventDefault(); this.closeTones(true); return; }
    if (key === 'ArrowDown' || key === 'ArrowUp' || key === 'ArrowRight' || key === 'ArrowLeft') {
      event.preventDefault();
      const forward = key === 'ArrowDown' || key === 'ArrowRight';
      const next = (Math.max(0, at) + (forward ? 1 : 5)) % 6;
      p.toneButtons[next].focus();
    } else if ((key === 'Enter' || key === ' ') && at >= 0) {
      event.preventDefault();
      this.pickTone(at);
    }
  }

  pickTone(tone) {
    const p = this.picker;
    this.saveTone(tone);
    this.updateToneButton();
    // Redraw the rows in view with the new tone.
    for (const row of p.rendered.values()) row.remove();
    p.rendered.clear();
    this.renderWindow();
    if (p.active) this.setActive(p.active);
    this.closeTones(true);
    p.live.textContent = t('toneNamed', { tone: t('tone' + tone) });
  }

  closePicker(opts = {}) {
    const p = this.picker;
    if (!p) return;
    this.picker = null;
    if (p.raf) cancelAnimationFrame(p.raf);
    if (p.atlasRaf) cancelAnimationFrame(p.atlasRaf);
    p.offAtlas?.();
    if (p.positionRaf) cancelAnimationFrame(p.positionRaf);
    if (p.anchor !== p.editor && p.anchor.classList && p.anchor.classList.contains('bt-ep-button')) p.anchor.setAttribute('aria-expanded', 'false');
    const focused = p.shadow.activeElement;
    if (opts.restoreFocus && p.editor.isConnected) {
      // Back to the editor, caret where it was.
      p.editor.focus({ preventScroll: true });
      if (p.savedRange && !/^(TEXTAREA|INPUT)$/.test(p.editor.tagName)) {
        try {
          const selection = window.getSelection();
          selection.removeAllRanges();
          selection.addRange(p.savedRange);
        } catch { /* The editor changed under us. */ }
      }
    } else if (focused) focused.blur();
    const remove = () => { p.host.remove(); this.hosts.delete(p.host); };
    if (opts.immediate || btEpReducedMotion()) { remove(); return; }
    p.host.setAttribute('data-closing', '');
    p.card.classList.add('ep-closing');
    setTimeout(remove, 90);
  }
};