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PC World Komputer 2010 April
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pluginy Firefox
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10868
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10868.xpi
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modules
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engines
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tabs.js
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2010-02-02
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/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Bookmarks Sync.
*
* The Initial Developer of the Original Code is Mozilla.
* Portions created by the Initial Developer are Copyright (C) 2008
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Myk Melez <myk@mozilla.org>
* Jono DiCarlo <jdicarlo@mozilla.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
const EXPORTED_SYMBOLS = ['TabEngine'];
const Cc = Components.classes;
const Ci = Components.interfaces;
const Cu = Components.utils;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://weave/util.js");
Cu.import("resource://weave/engines.js");
Cu.import("resource://weave/stores.js");
Cu.import("resource://weave/trackers.js");
Cu.import("resource://weave/type_records/tabs.js");
Cu.import("resource://weave/engines/clientData.js");
function TabEngine() {
this._init();
}
TabEngine.prototype = {
__proto__: SyncEngine.prototype,
name: "tabs",
_displayName: "Tabs",
description: "Access tabs from other devices via the History menu",
logName: "Tabs",
_storeObj: TabStore,
_trackerObj: TabTracker,
_recordObj: TabSetRecord,
_init: function _init() {
// Reset the client on every startup so that we fetch recent tabs
SyncEngine.prototype._init.call(this);
this._resetClient();
},
// API for use by Weave UI code to give user choices of tabs to open:
getAllClients: function TabEngine_getAllClients() {
return this._store._remoteClients;
},
getClientById: function TabEngine_getClientById(id) {
return this._store._remoteClients[id];
},
_resetClient: function TabEngine__resetClient() {
SyncEngine.prototype._resetClient.call(this);
this._store.wipe();
},
_syncFinish: function _syncFinish() {
SyncEngine.prototype._syncFinish.call(this);
this._tracker.resetChanged();
},
/* The intent is not to show tabs in the menu if they're already
* open locally. There are a couple ways to interpret this: for
* instance, we could do it by removing a tab from the list when
* you open it -- but then if you close it, you can't get back to
* it. So the way I'm doing it here is to not show a tab in the menu
* if you have a tab open to the same URL, even though this means
* that as soon as you navigate anywhere, the original tab will
* reappear in the menu.
*/
locallyOpenTabMatchesURL: function TabEngine_localTabMatches(url) {
return this._store.getAllTabs().some(function(tab) {
return tab.urlHistory[0] == url;
});
}
};
function TabStore() {
this._TabStore_init();
}
TabStore.prototype = {
__proto__: Store.prototype,
name: "tabs",
_logName: "Tabs.Store",
_remoteClients: {},
_TabStore_init: function TabStore__init() {
this._init();
},
get _sessionStore() {
let sessionStore = Cc["@mozilla.org/browser/sessionstore;1"].
getService(Ci.nsISessionStore);
this.__defineGetter__("_sessionStore", function() { return sessionStore;});
return this._sessionStore;
},
itemExists: function TabStore_itemExists(id) {
return id == Clients.clientID;
},
getAllTabs: function getAllTabs(filter) {
let filteredUrls = new RegExp(Svc.Prefs.get("engine.tabs.filteredUrls"), "i");
// Iterate through each tab of each window
let allTabs = [];
let wins = Svc.WinMediator.getEnumerator("navigator:browser");
while (wins.hasMoreElements()) {
// Get the tabs for both Firefox and Fennec
let window = wins.getNext();
let tabs = window.gBrowser && window.gBrowser.tabContainer.childNodes;
tabs = tabs || window.Browser._tabs;
// Extract various pieces of tab data
Array.forEach(tabs, function(tab) {
let browser = tab.linkedBrowser || tab.browser;
let url = browser.currentURI.spec;
// Filter out some urls if necessary
if (filter && filteredUrls.test(url))
return;
allTabs.push({
title: browser.contentTitle || "",
urlHistory: [url],
icon: browser.mIconURL || "",
lastUsed: tab.lastUsed || 0
});
});
}
return allTabs;
},
createRecord: function TabStore_createRecord(id, cryptoMetaURL) {
let record = new TabSetRecord();
record.clientName = Clients.clientName;
// Sort tabs in descending-used order to grab the most recently used
record.tabs = this.getAllTabs(true).sort(function(a, b) {
return b.lastUsed - a.lastUsed;
}).slice(0, 25);
record.tabs.forEach(function(tab) {
this._log.trace("Wrapping tab: " + JSON.stringify(tab));
}, this);
record.id = id;
record.encryption = cryptoMetaURL;
return record;
},
getAllIDs: function TabStore_getAllIds() {
let ids = {};
ids[Clients.clientID] = true;
return ids;
},
wipe: function TabStore_wipe() {
this._remoteClients = {};
},
create: function TabStore_create(record) {
this._log.debug("Adding remote tabs from " + record.clientName);
this._remoteClients[record.id] = record.cleartext;
// Lose some precision, but that's good enough (seconds)
let roundModify = Math.floor(record.modified / 1000);
let notifyState = Svc.Prefs.get("notifyTabState");
// If there's no existing pref, save this first modified time
if (notifyState == null)
Svc.Prefs.set("notifyTabState", roundModify);
// Don't change notifyState if it's already 0 (don't notify)
else if (notifyState == 0)
return;
// We must have gotten a new tab that isn't the same as last time
else if (notifyState != roundModify)
Svc.Prefs.set("notifyTabState", 0);
}
};
function TabTracker() {
this._TabTracker_init();
}
TabTracker.prototype = {
__proto__: Tracker.prototype,
name: "tabs",
_logName: "TabTracker",
file: "tab_tracker",
QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver]),
_TabTracker_init: function TabTracker__init() {
this._init();
this.resetChanged();
// Make sure "this" pointer is always set correctly for event listeners
this.onTab = Utils.bind2(this, this.onTab);
// Register as an observer so we can catch windows opening and closing:
Svc.WinWatcher.registerNotification(this);
// Also register listeners on already open windows
let wins = Svc.WinMediator.getEnumerator("navigator:browser");
while (wins.hasMoreElements())
this._registerListenersForWindow(wins.getNext());
},
_registerListenersForWindow: function TabTracker__registerListen(window) {
this._log.trace("Registering tab listeners in new window");
// For each topic, add or remove onTab as the listener
let topics = ["TabOpen", "TabClose", "TabSelect"];
let onTab = this.onTab;
let addRem = function(add) topics.forEach(function(topic) {
window[(add ? "add" : "remove") + "EventListener"](topic, onTab, false);
});
// Add the listeners now and remove them on unload
addRem(true);
window.addEventListener("unload", function() addRem(false), false);
},
observe: function TabTracker_observe(aSubject, aTopic, aData) {
// Add tab listeners now that a window has opened
let window = aSubject.QueryInterface(Ci.nsIDOMWindow);
if (aTopic == "domwindowopened") {
let self = this;
window.addEventListener("load", function() {
// Only register after the window is done loading to avoid unloads
self._registerListenersForWindow(window);
}, false);
}
},
onTab: function onTab(event) {
this._log.trace(event.type);
this.score += 1;
this._changedIDs[Clients.clientID] = true;
// Store a timestamp in the tab to track when it was last used
event.originalTarget.lastUsed = Math.floor(Date.now() / 1000);
},
get changedIDs() this._changedIDs,
// Provide a way to empty out the changed ids
resetChanged: function resetChanged() this._changedIDs = {}
}