зеркало из https://github.com/mozilla/gecko-dev.git
98 строки
3.0 KiB
JavaScript
98 строки
3.0 KiB
JavaScript
/* vim: set ts=2 sw=2 sts=2 et tw=80: */
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/* 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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"use strict";
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var EXPORTED_SYMBOLS = ["FindBarChild"];
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const {ActorChild} = ChromeUtils.import("resource://gre/modules/ActorChild.jsm");
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const {Services} = ChromeUtils.import("resource://gre/modules/Services.jsm");
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const {XPCOMUtils} = ChromeUtils.import("resource://gre/modules/XPCOMUtils.jsm");
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ChromeUtils.defineModuleGetter(this, "BrowserUtils",
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"resource://gre/modules/BrowserUtils.jsm");
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class FindBarChild extends ActorChild {
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constructor(dispatcher) {
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super(dispatcher);
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this._findKey = null;
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XPCOMUtils.defineLazyProxy(this, "FindBarContent", () => {
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let tmp = {};
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ChromeUtils.import("resource://gre/modules/FindBarContent.jsm", tmp);
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return new tmp.FindBarContent(this.mm);
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}, {inQuickFind: false, inPassThrough: false});
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}
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/**
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* Check whether this key event will start the findbar in the parent,
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* in which case we should pass any further key events to the parent to avoid
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* them being lost.
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* @param aEvent the key event to check.
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*/
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eventMatchesFindShortcut(aEvent) {
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if (!this._findKey) {
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this._findKey = Services.cpmm.sharedData.get("Findbar:Shortcut");
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if (!this._findKey) {
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return false;
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}
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}
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for (let k in this._findKey) {
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if (this._findKey[k] != aEvent[k]) {
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return false;
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}
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}
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return true;
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}
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handleEvent(event) {
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if (event.type == "keypress") {
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this.onKeypress(event);
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}
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}
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onKeypress(event) {
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let {FindBarContent} = this;
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if (!FindBarContent.inPassThrough &&
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this.eventMatchesFindShortcut(event)) {
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return FindBarContent.start(event);
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}
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// disable FAYT in about:blank to prevent FAYT opening unexpectedly.
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let location = this.content.location.href;
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if (location == "about:blank") {
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return null;
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}
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if (event.ctrlKey || event.altKey || event.metaKey || event.defaultPrevented ||
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!BrowserUtils.mimeTypeIsTextBased(this.content.document.contentType) ||
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!BrowserUtils.canFindInPage(location)) {
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return null;
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}
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if (FindBarContent.inPassThrough || FindBarContent.inQuickFind) {
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return FindBarContent.onKeypress(event);
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}
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if (event.charCode && BrowserUtils.shouldFastFind(event.target)) {
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let key = String.fromCharCode(event.charCode);
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if ((key == "/" || key == "'") && FindBarChild.manualFAYT) {
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return FindBarContent.startQuickFind(event);
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}
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if (key != " " && FindBarChild.findAsYouType) {
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return FindBarContent.startQuickFind(event, true);
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}
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}
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return null;
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}
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}
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XPCOMUtils.defineLazyPreferenceGetter(FindBarChild, "findAsYouType",
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"accessibility.typeaheadfind");
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XPCOMUtils.defineLazyPreferenceGetter(FindBarChild, "manualFAYT",
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"accessibility.typeaheadfind.manual");
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