tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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closebrackets.js (6847B)

      1 // CodeMirror, copyright (c) by Marijn Haverbeke and others
      2 // Distributed under an MIT license: https://codemirror.net/LICENSE
      3 
      4 (function(mod) {
      5  if (typeof exports == "object" && typeof module == "object") // CommonJS
      6    mod(require("resource://devtools/client/shared/sourceeditor/codemirror/lib/codemirror.js"));
      7  else if (typeof define == "function" && define.amd) // AMD
      8    define(["../../lib/codemirror"], mod);
      9  else // Plain browser env
     10    mod(CodeMirror);
     11 })(function(CodeMirror) {
     12  var defaults = {
     13    pairs: "()[]{}''\"\"",
     14    closeBefore: ")]}'\":;>",
     15    triples: "",
     16    explode: "[]{}"
     17  };
     18 
     19  var Pos = CodeMirror.Pos;
     20 
     21  CodeMirror.defineOption("autoCloseBrackets", false, function(cm, val, old) {
     22    if (old && old != CodeMirror.Init) {
     23      cm.removeKeyMap(keyMap);
     24      cm.state.closeBrackets = null;
     25    }
     26    if (val) {
     27      ensureBound(getOption(val, "pairs"))
     28      cm.state.closeBrackets = val;
     29      cm.addKeyMap(keyMap);
     30    }
     31  });
     32 
     33  function getOption(conf, name) {
     34    if (name == "pairs" && typeof conf == "string") return conf;
     35    if (typeof conf == "object" && conf[name] != null) return conf[name];
     36    return defaults[name];
     37  }
     38 
     39  var keyMap = {Backspace: handleBackspace, Enter: handleEnter};
     40  function ensureBound(chars) {
     41    for (var i = 0; i < chars.length; i++) {
     42      var ch = chars.charAt(i), key = "'" + ch + "'"
     43      if (!keyMap[key]) keyMap[key] = handler(ch)
     44    }
     45  }
     46  ensureBound(defaults.pairs + "`")
     47 
     48  function handler(ch) {
     49    return function(cm) { return handleChar(cm, ch); };
     50  }
     51 
     52  function getConfig(cm) {
     53    var deflt = cm.state.closeBrackets;
     54    if (!deflt || deflt.override) return deflt;
     55    var mode = cm.getModeAt(cm.getCursor());
     56    return mode.closeBrackets || deflt;
     57  }
     58 
     59  function handleBackspace(cm) {
     60    var conf = getConfig(cm);
     61    if (!conf || cm.getOption("disableInput")) return CodeMirror.Pass;
     62 
     63    var pairs = getOption(conf, "pairs");
     64    var ranges = cm.listSelections();
     65    for (var i = 0; i < ranges.length; i++) {
     66      if (!ranges[i].empty()) return CodeMirror.Pass;
     67      var around = charsAround(cm, ranges[i].head);
     68      if (!around || pairs.indexOf(around) % 2 != 0) return CodeMirror.Pass;
     69    }
     70    for (var i = ranges.length - 1; i >= 0; i--) {
     71      var cur = ranges[i].head;
     72      cm.replaceRange("", Pos(cur.line, cur.ch - 1), Pos(cur.line, cur.ch + 1), "+delete");
     73    }
     74  }
     75 
     76  function handleEnter(cm) {
     77    var conf = getConfig(cm);
     78    var explode = conf && getOption(conf, "explode");
     79    if (!explode || cm.getOption("disableInput")) return CodeMirror.Pass;
     80 
     81    var ranges = cm.listSelections();
     82    for (var i = 0; i < ranges.length; i++) {
     83      if (!ranges[i].empty()) return CodeMirror.Pass;
     84      var around = charsAround(cm, ranges[i].head);
     85      if (!around || explode.indexOf(around) % 2 != 0) return CodeMirror.Pass;
     86    }
     87    cm.operation(function() {
     88      var linesep = cm.lineSeparator() || "\n";
     89      cm.replaceSelection(linesep + linesep, null);
     90      cm.execCommand("goCharLeft");
     91      ranges = cm.listSelections();
     92      for (var i = 0; i < ranges.length; i++) {
     93        var line = ranges[i].head.line;
     94        cm.indentLine(line, null, true);
     95        cm.indentLine(line + 1, null, true);
     96      }
     97    });
     98  }
     99 
    100  function contractSelection(sel) {
    101    var inverted = CodeMirror.cmpPos(sel.anchor, sel.head) > 0;
    102    return {anchor: new Pos(sel.anchor.line, sel.anchor.ch + (inverted ? -1 : 1)),
    103            head: new Pos(sel.head.line, sel.head.ch + (inverted ? 1 : -1))};
    104  }
    105 
    106  function handleChar(cm, ch) {
    107    var conf = getConfig(cm);
    108    if (!conf || cm.getOption("disableInput")) return CodeMirror.Pass;
    109 
    110    var pairs = getOption(conf, "pairs");
    111    var pos = pairs.indexOf(ch);
    112    if (pos == -1) return CodeMirror.Pass;
    113 
    114    var closeBefore = getOption(conf,"closeBefore");
    115 
    116    var triples = getOption(conf, "triples");
    117 
    118    var identical = pairs.charAt(pos + 1) == ch;
    119    var ranges = cm.listSelections();
    120    var opening = pos % 2 == 0;
    121 
    122    var type;
    123    for (var i = 0; i < ranges.length; i++) {
    124      var range = ranges[i], cur = range.head, curType;
    125      var next = cm.getRange(cur, Pos(cur.line, cur.ch + 1));
    126      if (opening && !range.empty()) {
    127        curType = "surround";
    128      } else if ((identical || !opening) && next == ch) {
    129        if (identical && stringStartsAfter(cm, cur))
    130          curType = "both";
    131        else if (triples.indexOf(ch) >= 0 && cm.getRange(cur, Pos(cur.line, cur.ch + 3)) == ch + ch + ch)
    132          curType = "skipThree";
    133        else
    134          curType = "skip";
    135      } else if (identical && cur.ch > 1 && triples.indexOf(ch) >= 0 &&
    136                 cm.getRange(Pos(cur.line, cur.ch - 2), cur) == ch + ch) {
    137        if (cur.ch > 2 && /\bstring/.test(cm.getTokenTypeAt(Pos(cur.line, cur.ch - 2)))) return CodeMirror.Pass;
    138        curType = "addFour";
    139      } else if (identical) {
    140        var prev = cur.ch == 0 ? " " : cm.getRange(Pos(cur.line, cur.ch - 1), cur)
    141        if (!CodeMirror.isWordChar(next) && prev != ch && !CodeMirror.isWordChar(prev)) curType = "both";
    142        else return CodeMirror.Pass;
    143      } else if (opening && (next.length === 0 || /\s/.test(next) || closeBefore.indexOf(next) > -1)) {
    144        curType = "both";
    145      } else {
    146        return CodeMirror.Pass;
    147      }
    148      if (!type) type = curType;
    149      else if (type != curType) return CodeMirror.Pass;
    150    }
    151 
    152    var left = pos % 2 ? pairs.charAt(pos - 1) : ch;
    153    var right = pos % 2 ? ch : pairs.charAt(pos + 1);
    154    cm.operation(function() {
    155      if (type == "skip") {
    156        cm.execCommand("goCharRight");
    157      } else if (type == "skipThree") {
    158        for (var i = 0; i < 3; i++)
    159          cm.execCommand("goCharRight");
    160      } else if (type == "surround") {
    161        var sels = cm.getSelections();
    162        for (var i = 0; i < sels.length; i++)
    163          sels[i] = left + sels[i] + right;
    164        cm.replaceSelections(sels, "around");
    165        sels = cm.listSelections().slice();
    166        for (var i = 0; i < sels.length; i++)
    167          sels[i] = contractSelection(sels[i]);
    168        cm.setSelections(sels);
    169      } else if (type == "both") {
    170        cm.replaceSelection(left + right, null);
    171        cm.triggerElectric(left + right);
    172        cm.execCommand("goCharLeft");
    173      } else if (type == "addFour") {
    174        cm.replaceSelection(left + left + left + left, "before");
    175        cm.execCommand("goCharRight");
    176      }
    177    });
    178  }
    179 
    180  function charsAround(cm, pos) {
    181    var str = cm.getRange(Pos(pos.line, pos.ch - 1),
    182                          Pos(pos.line, pos.ch + 1));
    183    return str.length == 2 ? str : null;
    184  }
    185 
    186  function stringStartsAfter(cm, pos) {
    187    var token = cm.getTokenAt(Pos(pos.line, pos.ch + 1))
    188    return /\bstring/.test(token.type) && token.start == pos.ch &&
    189      (pos.ch == 0 || !/\bstring/.test(cm.getTokenTypeAt(pos)))
    190  }
    191 });