The Tor Browser: browser/devtools/sourceeditor/codemirror/closebrackets.js@b8a032363ba2 (annotated)

browser/devtools/sourceeditor/codemirror/closebrackets.js@b8a032363ba2 (annotated)

browser/devtools/sourceeditor/codemirror/closebrackets.js

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 (function(mod) {
   if (typeof exports == "object" && typeof module == "object") // CommonJS
     mod(require("../../lib/codemirror"));
   else if (typeof define == "function" && define.amd) // AMD
     define(["../../lib/codemirror"], mod);
   else // Plain browser env
     mod(CodeMirror);
 })(function(CodeMirror) {
   var DEFAULT_BRACKETS = "()[]{}''\"\"";
   var DEFAULT_EXPLODE_ON_ENTER = "[]{}";
   var SPACE_CHAR_REGEX = /\s/;
   CodeMirror.defineOption("autoCloseBrackets", false, function(cm, val, old) {
     if (old != CodeMirror.Init && old)
       cm.removeKeyMap("autoCloseBrackets");
     if (!val) return;
     var pairs = DEFAULT_BRACKETS, explode = DEFAULT_EXPLODE_ON_ENTER;
     if (typeof val == "string") pairs = val;
     else if (typeof val == "object") {
       if (val.pairs != null) pairs = val.pairs;
       if (val.explode != null) explode = val.explode;
     }
     var map = buildKeymap(pairs);
     if (explode) map.Enter = buildExplodeHandler(explode);
     cm.addKeyMap(map);
   });
   function charsAround(cm, pos) {
     var str = cm.getRange(CodeMirror.Pos(pos.line, pos.ch - 1),
                           CodeMirror.Pos(pos.line, pos.ch + 1));
     return str.length == 2 ? str : null;
   }
   function buildKeymap(pairs) {
     var map = {
       name : "autoCloseBrackets",
       Backspace: function(cm) {
         if (cm.getOption("disableInput")) return CodeMirror.Pass;
         var ranges = cm.listSelections();
         for (var i = 0; i < ranges.length; i++) {
           if (!ranges[i].empty()) return CodeMirror.Pass;
           var around = charsAround(cm, ranges[i].head);
           if (!around || pairs.indexOf(around) % 2 != 0) return CodeMirror.Pass;
         }
         for (var i = ranges.length - 1; i >= 0; i--) {
           var cur = ranges[i].head;
           cm.replaceRange("", CodeMirror.Pos(cur.line, cur.ch - 1), CodeMirror.Pos(cur.line, cur.ch + 1));
         }
       }
     };
     var closingBrackets = "";
     for (var i = 0; i < pairs.length; i += 2) (function(left, right) {
       if (left != right) closingBrackets += right;
       map["'" + left + "'"] = function(cm) {
         if (cm.getOption("disableInput")) return CodeMirror.Pass;
         var ranges = cm.listSelections(), type, next;
         for (var i = 0; i < ranges.length; i++) {
           var range = ranges[i], cur = range.head, curType;
           if (left == "'" && cm.getTokenTypeAt(cur) == "comment")
             return CodeMirror.Pass;
           var next = cm.getRange(cur, CodeMirror.Pos(cur.line, cur.ch + 1));
           if (!range.empty())
             curType = "surround";
           else if (left == right && next == right)
             curType = "skip";
           else if (left == right && CodeMirror.isWordChar(next))
             return CodeMirror.Pass;
           else if (cm.getLine(cur.line).length == cur.ch || closingBrackets.indexOf(next) >= 0 || SPACE_CHAR_REGEX.test(next))
             curType = "both";
           else
             return CodeMirror.Pass;
           if (!type) type = curType;
           else if (type != curType) return CodeMirror.Pass;
         }
         if (type == "skip") {
           cm.execCommand("goCharRight");
         } else if (type == "surround") {
           var sels = cm.getSelections();
           for (var i = 0; i < sels.length; i++)
             sels[i] = left + sels[i] + right;
           cm.replaceSelections(sels, "around");
         } else if (type == "both") {
           cm.replaceSelection(left + right, null);
           cm.execCommand("goCharLeft");
         }
       };
       if (left != right) map["'" + right + "'"] = function(cm) {
         var ranges = cm.listSelections();
         for (var i = 0; i < ranges.length; i++) {
           var range = ranges[i];
           if (!range.empty() ||
               cm.getRange(range.head, CodeMirror.Pos(range.head.line, range.head.ch + 1)) != right)
             return CodeMirror.Pass;
         }
         cm.execCommand("goCharRight");
       };
     })(pairs.charAt(i), pairs.charAt(i + 1));
     return map;
   }
   function buildExplodeHandler(pairs) {
     return function(cm) {
       if (cm.getOption("disableInput")) return CodeMirror.Pass;
       var ranges = cm.listSelections();
       for (var i = 0; i < ranges.length; i++) {
         if (!ranges[i].empty()) return CodeMirror.Pass;
         var around = charsAround(cm, ranges[i].head);
         if (!around || pairs.indexOf(around) % 2 != 0) return CodeMirror.Pass;
       }
       cm.operation(function() {
         cm.replaceSelection("\n\n", null);
         cm.execCommand("goCharLeft");
         ranges = cm.listSelections();
         for (var i = 0; i < ranges.length; i++) {
           var line = ranges[i].head.line;
           cm.indentLine(line, null, true);
           cm.indentLine(line + 1, null, true);
         }
       });
     };
   }
 });