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Code Issues Projects Releases Wiki Activity

Let Editor.extendRange cross element boundaries.

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This commit is contained in:
Kris Maglione
2011-10-01 16:22:25 -04:00
parent 8ef35fee8b
commit cbbb3de86f
1 changed files with 85 additions and 13 deletions
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98
common/content/editor.js
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@@ -212,8 +212,6 @@ var Editor = Module("editor", {
dactyl.assert(editor_);
text = Array.map(editor_.rootElement.childNodes, function (e) DOM.stringify(e, true)).join("");
util.dump(editor_.selection);
if (!editor_.selection.rangeCount)
var sel = "";
else {
@@ -328,21 +326,95 @@ var Editor = Module("editor", {
}
},
}, {
extendRange: function extendRange(range, forward, re, sameWord) {
TextsIterator: Class("TextsIterator", {
init: function init(root, context) {
this.context = context;
this.root = root;
},
prevNode: function prevNode() {
if (this.context == this.root)
return null;
var node = this.context.previousSibling;
if (!node)
node = this.context.parentNode;
else
while (node.lastChild)
node = node.lastChild;
return this.context = node;
},
nextNode: function nextNode() {
var node = this.context.firstChild;
if (!node) {
node = this.context;
while (node != this.root && !node.nextSibling)
node = node.parentNode;
node = node.nextSibling;
}
if (node == this.root || node == null)
return null;
return this.context = node;
},
getPrev: function getPrev() {
return this.filter("prevNode");
},
getNext: function getNext() {
return this.filter("nextNode");
},
filter: function filter(meth) {
let node;
while (node = this[meth]())
if (node instanceof Ci.nsIDOMText &&
let ({ style } = DOM(node))
style.MozUserSelect != "none" &&
style.visibility != "hidden" &&
style.visibility != "collapse" &&
style.display != "none")
return node;
}
}),
extendRange: function extendRange(range, forward, re, sameWord, root) {
function advance(positive) {
let idx = range.endOffset;
while (idx < text.length && re.test(text[idx++]) == positive)
range.setEnd(range.endContainer, idx);
while (true) {
while (idx == text.length && (node = iterator.getNext())) {
offset = text.length;
text += node.textContent;
range.setEnd(node, 0);
}
if (idx >= text.length || re.test(text[idx]) != positive)
break;
range.setEnd(range.endContainer, ++idx - offset);
}
}
function retreat(positive) {
let idx = range.startOffset;
while (idx > 0 && re.test(text[--idx]) == positive)
range.setStart(range.startContainer, idx);
while (true) {
while (idx == 0 && (node = iterator.getPrev())) {
let str = node.textContent;
idx += str.length;
text = str + text;
range.setStart(node, str.length);
}
if (idx == 0 || re.test(text[idx - 1]) != positive)
break;
range.setStart(range.startContainer, --idx);
}
}
let nodeRange = range.cloneRange();
nodeRange.selectNodeContents(range.startContainer);
let text = String(nodeRange);
let text = range[forward ? "endContainer" : "startContainer"].textContent;
let idx = range[forward ? "endOffset" : "startOffset"];
let offset = 0;
let node = range.startContainer;
let iterator = Editor.TextsIterator(root || node.ownerDocument.documentElement,
node);
if (forward) {
advance(true);
@@ -491,7 +563,7 @@ var Editor = Module("editor", {
function updateRange(editor, forward, re, modify) {
let range = Editor.extendRange(editor.selection.getRangeAt(0),
forward, re, false);
forward, re, false, editor.rootElement);
modify(range);
editor.selection.removeAllRanges();
editor.selection.addRange(range);