114 lines
3.1 KiB
JavaScript
114 lines
3.1 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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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const { classes: Cc, interfaces: Ci, utils: Cu } = Components;
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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Cu.import("resource://gre/modules/Services.jsm");
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Cu.import("resource://gre/modules/Messaging.jsm");
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XPCOMUtils.defineLazyServiceGetter(this, "uuidgen",
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"@mozilla.org/uuid-generator;1",
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"nsIUUIDGenerator");
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this.EXPORTED_SYMBOLS = ["PageActions"];
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// Copied from browser.js
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// TODO: We should move this method to a common importable location
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function resolveGeckoURI(aURI) {
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if (!aURI)
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throw "Can't resolve an empty uri";
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if (aURI.startsWith("chrome://")) {
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let registry = Cc['@mozilla.org/chrome/chrome-registry;1'].getService(Ci["nsIChromeRegistry"]);
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return registry.convertChromeURL(Services.io.newURI(aURI, null, null)).spec;
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} else if (aURI.startsWith("resource://")) {
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let handler = Services.io.getProtocolHandler("resource").QueryInterface(Ci.nsIResProtocolHandler);
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return handler.resolveURI(Services.io.newURI(aURI, null, null));
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}
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return aURI;
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}
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var PageActions = {
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_items: { },
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_inited: false,
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_maybeInit: function() {
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if (!this._inited && Object.keys(this._items).length > 0) {
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this._inited = true;
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Services.obs.addObserver(this, "PageActions:Clicked", false);
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Services.obs.addObserver(this, "PageActions:LongClicked", false);
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}
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},
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_maybeUninit: function() {
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if (this._inited && Object.keys(this._items).length == 0) {
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this._inited = false;
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Services.obs.removeObserver(this, "PageActions:Clicked");
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Services.obs.removeObserver(this, "PageActions:LongClicked");
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}
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},
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observe: function(aSubject, aTopic, aData) {
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let item = this._items[aData];
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if (aTopic == "PageActions:Clicked") {
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if (item.clickCallback) {
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item.clickCallback();
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}
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} else if (aTopic == "PageActions:LongClicked") {
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if (item.longClickCallback) {
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item.longClickCallback();
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}
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}
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},
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isShown: function(id) {
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return !!this._items[id];
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},
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synthesizeClick: function(id) {
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let item = this._items[id];
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if (item && item.clickCallback) {
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item.clickCallback();
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}
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},
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add: function(aOptions) {
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let id = aOptions.id || uuidgen.generateUUID().toString()
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Messaging.sendRequest({
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type: "PageActions:Add",
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id: id,
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title: aOptions.title,
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icon: resolveGeckoURI(aOptions.icon),
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important: "important" in aOptions ? aOptions.important : false
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});
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this._items[id] = {};
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if (aOptions.clickCallback) {
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this._items[id].clickCallback = aOptions.clickCallback;
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}
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if (aOptions.longClickCallback) {
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this._items[id].longClickCallback = aOptions.longClickCallback;
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}
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this._maybeInit();
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return id;
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},
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remove: function(id) {
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Messaging.sendRequest({
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type: "PageActions:Remove",
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id: id
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});
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delete this._items[id];
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this._maybeUninit();
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}
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}
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