gecko-dev/browser/components/customizableui/SearchWidgetTracker.jsm

79 строки
2.6 KiB
JavaScript

/* 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/. */
/*
* Keeps the "browser.search.widget.inNavBar" preference synchronized.
*/
"use strict";
var EXPORTED_SYMBOLS = ["SearchWidgetTracker"];
ChromeUtils.import("resource://gre/modules/Services.jsm");
ChromeUtils.import("resource://gre/modules/XPCOMUtils.jsm");
ChromeUtils.defineModuleGetter(this, "CustomizableUI",
"resource:///modules/CustomizableUI.jsm");
const WIDGET_ID = "search-container";
const PREF_NAME = "browser.search.widget.inNavBar";
const SearchWidgetTracker = {
init() {
this.onWidgetAdded = this.onWidgetRemoved = (widgetId, area) => {
if (widgetId == WIDGET_ID && area == CustomizableUI.AREA_NAVBAR) {
this.syncPreferenceWithWidget();
}
};
this.onWidgetReset = this.onWidgetUndoMove = node => {
if (node.id == WIDGET_ID) {
this.syncPreferenceWithWidget();
}
};
CustomizableUI.addListener(this);
Services.prefs.addObserver(PREF_NAME,
() => this.syncWidgetWithPreference());
},
onAreaNodeRegistered(aArea) {
// The placement of the widget always takes priority, and the preference
// should always match the actual placement when the browser starts up - i.e.
// once the navigation bar has been registered.
if (aArea == CustomizableUI.AREA_NAVBAR) {
this.syncPreferenceWithWidget();
}
},
onCustomizeEnd() {
// onWidgetUndoMove does not fire when the search container is moved back to
// the customization palette as a result of an undo, so we sync again here.
this.syncPreferenceWithWidget();
},
syncPreferenceWithWidget() {
Services.prefs.setBoolPref(PREF_NAME, this.widgetIsInNavBar);
},
syncWidgetWithPreference() {
let newValue = Services.prefs.getBoolPref(PREF_NAME);
if (newValue == this.widgetIsInNavBar) {
return;
}
if (newValue) {
// The URL bar widget is always present in the navigation toolbar, so we
// can simply read its position to place the search bar right after it.
CustomizableUI.addWidgetToArea(WIDGET_ID, CustomizableUI.AREA_NAVBAR,
CustomizableUI.getPlacementOfWidget("urlbar-container").position + 1);
} else {
CustomizableUI.removeWidgetFromArea(WIDGET_ID);
}
},
get widgetIsInNavBar() {
let placement = CustomizableUI.getPlacementOfWidget(WIDGET_ID);
return placement ? placement.area == CustomizableUI.AREA_NAVBAR : false;
},
};