mirror of
https://github.com/mozilla/gecko-dev.git
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77 lines
2.8 KiB
JavaScript
77 lines
2.8 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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dump("### FindHandler.js loaded\n");
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var FindHandler = {
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get _fastFind() {
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delete this._fastFind;
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this._fastFind = Cc["@mozilla.org/typeaheadfind;1"].createInstance(Ci.nsITypeAheadFind);
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this._fastFind.init(docShell);
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return this._fastFind;
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},
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init: function findHandlerInit() {
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addMessageListener("FindAssist:Find", this);
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addMessageListener("FindAssist:Next", this);
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addMessageListener("FindAssist:Previous", this);
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},
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receiveMessage: function findHandlerReceiveMessage(aMessage) {
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let findResult = Ci.nsITypeAheadFind.FIND_NOTFOUND;
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let json = aMessage.json;
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switch (aMessage.name) {
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case "FindAssist:Find":
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findResult = this._fastFind.find(json.searchString, false);
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break;
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case "FindAssist:Previous":
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findResult = this._fastFind.findAgain(true, false);
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break;
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case "FindAssist:Next":
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findResult = this._fastFind.findAgain(false, false);
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break;
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}
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if (findResult == Ci.nsITypeAheadFind.FIND_NOTFOUND) {
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sendAsyncMessage("FindAssist:Show", { rect: null , result: findResult });
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return;
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}
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let selection = this._fastFind.currentWindow.getSelection();
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if (!selection.rangeCount || selection.isCollapsed) {
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// The selection can be into an input or a textarea element
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let nodes = content.document.querySelectorAll("input[type='text'], textarea");
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for (let i = 0; i < nodes.length; i++) {
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let node = nodes[i];
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if (node instanceof Ci.nsIDOMNSEditableElement && node.editor) {
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selection = node.editor.selectionController.getSelection(Ci.nsISelectionController.SELECTION_NORMAL);
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if (selection.rangeCount && !selection.isCollapsed)
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break;
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}
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}
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}
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let scroll = ContentScroll.getScrollOffset(content);
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for (let frame = this._fastFind.currentWindow; frame != content; frame = frame.parent) {
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let rect = frame.frameElement.getBoundingClientRect();
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let left = frame.getComputedStyle(frame.frameElement, "").borderLeftWidth;
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let top = frame.getComputedStyle(frame.frameElement, "").borderTopWidth;
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scroll.add(rect.left + parseInt(left), rect.top + parseInt(top));
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}
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let rangeRect = selection.getRangeAt(0).getBoundingClientRect();
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let rect = new Rect(scroll.x + rangeRect.left, scroll.y + rangeRect.top, rangeRect.width, rangeRect.height);
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// Ensure the potential "scroll" event fired during a search as already fired
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let timer = new Util.Timeout(function() {
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sendAsyncMessage("FindAssist:Show", { rect: rect.isEmpty() ? null: rect , result: findResult });
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});
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timer.once(0);
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}
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};
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FindHandler.init();
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