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Last Comment Bug 931191 - Inspector janks for seconds at a time looking at chat.meatspac.es; r=mratcliffe

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This commit is contained in:
Brian Grinstead 2013-11-05 11:00:13 -06:00
parent 4ca37a2628
commit 45d7754505
1 changed files with 18 additions and 8 deletions
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26
toolkit/devtools/output-parser.js
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@ -8,6 +8,7 @@ const {Cc, Ci, Cu} = require("chrome");
const {colorUtils} = require("devtools/css-color");
const {Services} = Cu.import("resource://gre/modules/Services.jsm", {});
const MAX_ITERATIONS = 100;
const REGEX_QUOTES = /^".*?"|^".*/;
const REGEX_URL = /^url\(["']?(.+?)(?::(\d+))?["']?\)/;
const REGEX_WHITESPACE = /^\s+/;
@ -135,6 +136,7 @@ OutputParser.prototype = {
let dirty = false;
let matched = null;
let nameValueSupported = false;
let i = 0;
let trimMatchFromStart = function(match) {
text = text.substr(match.length);
@ -207,6 +209,14 @@ OutputParser.prototype = {
}
dirty = false;
// Prevent this loop from slowing down the browser with too
// many nodes being appended into output.
i++;
if (i > MAX_ITERATIONS) {
trimMatchFromStart(text);
this._appendTextNode(text);
}
}
return this._toDOM();
@ -312,14 +322,10 @@ OutputParser.prototype = {
*/
_appendTextNode: function(text) {
let lastItem = this.parsed[this.parsed.length - 1];
if (typeof lastItem !== "undefined" && lastItem.nodeName === "#text") {
lastItem.nodeValue += text;
if (typeof lastItem === "string") {
this.parsed[this.parsed.length - 1] = lastItem + text
} else {
let win = Services.appShell.hiddenDOMWindow;
let doc = win.document;
let textNode = doc.createTextNode(text);
this.parsed.push(textNode);
this.parsed.push(text);
}
},
@ -335,7 +341,11 @@ OutputParser.prototype = {
let frag = doc.createDocumentFragment();
for (let item of this.parsed) {
frag.appendChild(item);
if (typeof item === "string") {
frag.appendChild(doc.createTextNode(item));
} else {
frag.appendChild(item);
}
}
this.parsed.length = 0;