gecko-dev/toolkit/modules/FindBarContent.jsm

103 строки
2.8 KiB
JavaScript

// vim: set ts=2 sw=2 sts=2 tw=80:
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
"use strict";
var EXPORTED_SYMBOLS = ["FindBarContent"];
ChromeUtils.import("resource://gre/modules/XPCOMUtils.jsm");
ChromeUtils.defineModuleGetter(this, "Services",
"resource://gre/modules/Services.jsm");
/* Please keep in sync with toolkit/content/widgets/findbar.xml */
const FIND_NORMAL = 0;
const FIND_TYPEAHEAD = 1;
const FIND_LINKS = 2;
class FindBarContent {
constructor(mm) {
this.mm = mm;
this.findMode = 0;
this.inQuickFind = false;
this.mm.addMessageListener("Findbar:UpdateState", this);
Services.els.addSystemEventListener(this.mm, "mouseup", this, false);
}
start(event) {
this.inPassThrough = true;
}
startQuickFind(event, autostart = false) {
let mode = FIND_TYPEAHEAD;
if (event.charCode == "'".charAt(0) ||
autostart && FindBarContent.typeAheadLinksOnly) {
mode = FIND_LINKS;
}
// Set findMode immediately (without waiting for child->parent->child roundtrip)
// to ensure we pass any further keypresses, too.
this.findMode = mode;
this.passKeyToParent(event);
}
receiveMessage(msg) {
switch (msg.name) {
case "Findbar:UpdateState":
this.findMode = msg.data.findMode;
this.inQuickFind = msg.data.hasQuickFindTimeout;
if (msg.data.isOpenAndFocused) {
this.inPassThrough = false;
}
break;
}
}
handleEvent(event) {
switch (event.type) {
case "keypress":
this.onKeypress(event);
break;
case "mouseup":
this.onMouseup(event);
break;
}
}
onKeypress(event) {
if (this.inPassThrough) {
this.passKeyToParent(event);
} else if (this.findMode != FIND_NORMAL && this.inQuickFind && event.charCode) {
this.passKeyToParent(event);
}
}
passKeyToParent(event) {
event.preventDefault();
// These are the properties required to dispatch another 'real' event
// to the findbar in the parent in _dispatchKeypressEvent in findbar.xml .
// If you make changes here, verify that that method can still do its job.
const kRequiredProps = [
"type", "bubbles", "cancelable", "ctrlKey", "altKey", "shiftKey",
"metaKey", "keyCode", "charCode",
];
let fakeEvent = {};
for (let prop of kRequiredProps) {
fakeEvent[prop] = event[prop];
}
this.mm.sendAsyncMessage("Findbar:Keypress", fakeEvent);
}
onMouseup(event) {
if (this.findMode != FIND_NORMAL)
this.mm.sendAsyncMessage("Findbar:Mouseup");
}
}
XPCOMUtils.defineLazyPreferenceGetter(FindBarContent, "typeAheadLinksOnly",
"accessibility.typeaheadfind.linksonly");