Added Safari Support

chrome/background.js

+/*
+ * This file is part of Adblock Plus <http://adblockplus.org/>,
+ * Copyright (C) 2006-2013 Eyeo GmbH
+ *
+ * Adblock Plus is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 3 as
+ * published by the Free Software Foundation.
+ *
+ * Adblock Plus is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+(function()
+{
+  /* Events */
+
+  var TabEventTarget = function()
+  {
+    WrappedEventTarget.apply(this, arguments);
+
+    this._tabs = {};
+
+    this._sharedListener = this._sharedListener.bind(this);
+    this._removeTab = this._removeTab.bind(this);
+  };
+  TabEventTarget.prototype = {
+    __proto__: WrappedEventTarget.prototype,
+    _bindToTab: function(tab)
+    {
+      return {
+        addListener: function(listener)
+        {
+          var listeners = this._tabs[tab._id];
+
+          if (!listeners)
+          {
+            this._tabs[tab._id] = listeners = [];
+
+            if (Object.keys(this._tabs).length == 1)
+              this.addListener(this._sharedListener);
+
+            tab.onRemoved.addListener(this._removeTab);
+          }
+
+          listeners.push(listener);
+        }.bind(this),
+        removeListener: function(listener)
+        {
+          var listeners = this._tabs[tab._id];
+          if (!listeners)
+            return;
+
+          var idx = listeners.indexOf(listener);
+          if (idx == -1)
+            return;
+
+          listeners.splice(idx, 1);
+
+          if (listeners.length == 0)
+            tab.onRemoved.removeListener(this._removeTab);
+          else
+          {
+            if (listeners.length > 1)
+              return;
+            if (listeners[0] != this._removeTab)
+              return;
+          }
+
+          this._removeTab(tab);
+        }.bind(this)
+      };
+    },
+    _sharedListener: function(tab)
+    {
+      var listeners = this._tabs[tab._id];
+
+      if (!listeners)
+        return;
+
+      // copy listeners before calling them, because they might
+      // add or remove other listeners, which must not be taken
+      // into account before the next occurrence of the event
+      listeners = listeners.slice(0);
+
+      for (var i = 0; i < listeners.length; i++)
+        listeners[i](tab);
+    },
+    _removeTab: function(tab)
+    {
+      delete this._tabs[tab._id];
+
+      if (Object.keys(this._tabs).length == 0)
+        this.removeListener(this._sharedListener);
+    }
+  };
+
+  var BeforeNavigateTabEventTarget = function()
+  {
+    TabEventTarget.call(this, chrome.tabs.onUpdated);
+  };
+  BeforeNavigateTabEventTarget.prototype = {
+    __proto__: TabEventTarget.prototype,
+    _wrapListener: function(listener)
+    {
+      return function(id, info, tab)
+      {
+        if ("url" in info)
+          listener(new Tab(tab));
+      };
+    }
+  };
+
+  var CompletedTabEventTarget = function()
+  {
+    TabEventTarget.call(this, chrome.tabs.onUpdated);
+  };
+  CompletedTabEventTarget.prototype = {
+    __proto__: TabEventTarget.prototype,
+    _wrapListener: function(listener)
+    {
+      return function(id, info, tab)
+      {
+        if (info.status == "complete")
+          listener(new Tab(tab));
+      };
+    }
+  };
+
+  var ActivatedTabEventTarget = function()
+  {
+    TabEventTarget.call(this, chrome.tabs.onActivated);
+  };
+  ActivatedTabEventTarget.prototype = {
+    __proto__: TabEventTarget.prototype,
+    _wrapListener: function(listener)
+    {
+      return function(info)
+      {
+        chrome.tabs.get(info.tabId, function(tab)
+        {
+          listener(new Tab(tab));
+        });
+      };
+    }
+  }
+
+  var RemovedTabEventTarget = function()
+  {
+    TabEventTarget.call(this, chrome.tabs.onRemoved);
+  };
+  RemovedTabEventTarget.prototype = {
+    __proto__: TabEventTarget.prototype,
+    _wrapListener: function(listener)
+    {
+      return function(id) { listener(new Tab({id: id})); };
+    }
+  };
+
+  var BeforeRequestEventTarget = function()
+  {
+    WrappedEventTarget.call(this, chrome.webRequest.onBeforeRequest);
+  };
+  BeforeRequestEventTarget.prototype = {
+    __proto__: WrappedEventTarget.prototype,
+    _wrapListener: function(listener)
+    {
+      return function(details)
+      {
+        var tab = null;
+
+        if (details.tabId != -1)
+          tab = new Tab({id: details.tabId});
+
+        return {cancel: listener(
+          details.url,
+          details.type,
+          tab,
+          details.frameId,
+          details.parentFrameId
+        ) === false};
+      };
+    },
+    _prepareExtraArguments: function(urls)
+    {
+      return [urls ? {urls: urls} : {}, ["blocking"]];
+    }
+  };
+
+
+  /* Tabs */
+
+  var PageAction = function(tabId)
+  {
+    this._tabId = tabId;
+  };
+  PageAction.prototype = {
+    setIcon: function(path)
+    {
+      chrome.pageAction.setIcon({tabId: this._tabId, path: path});
+    },
+    setTitle: function(title)
+    {
+      chrome.pageAction.setTitle({tabId: this._tabId, title: title});
+    },
+    hide: function()
+    {
+      chrome.pageAction.hide(this._tabId);
+    },
+    show: function()
+    {
+      chrome.pageAction.show(this._tabId);
+    }
+  };
+
+  Tab = function(tab)
+  {
+    this._id = tab.id;
+
+    this.url = tab.url;
+    this.pageAction = new PageAction(tab.id);
+
+    this.onBeforeNavigate = ext.tabs.onBeforeNavigate._bindToTab(this);
+    this.onCompleted = ext.tabs.onCompleted._bindToTab(this);
+    this.onActivated = ext.tabs.onActivated._bindToTab(this);
+    this.onRemoved = ext.tabs.onRemoved._bindToTab(this);
+  };
+  Tab.prototype = {
+    close: function()
+    {
+      chrome.tabs.remove(this._id);
+    },
+    activate: function()
+    {
+      chrome.tabs.update(this._id, {selected: true});
+    },
+    sendMessage: function(message, responseCallback)
+    {
+      chrome.tabs.sendMessage(this._id, message, responseCallback);
+    }
+  };
+
+  TabMap = function()
+  {
+    this._map = {};
+    this.delete = this.delete.bind(this);
+  };
+  TabMap.prototype = {
+    get: function(tab)
+    {
+      return (this._map[tab._id] || {}).value;
+    },
+    set: function(tab, value)
+    {
+      if (!(tab._id in this._map))
+        tab.onRemoved.addListener(this.delete);
+
+      this._map[tab._id] = {tab: tab, value: value};
+    },
+    has: function(tab)
+    {
+      return tab._id in this._map;
+    },
+    clear: function()
+    {
+      for (var id in this._map)
+        this.delete(this._map[id].tab);
+    }
+  };
+  TabMap.prototype["delete"] = function(tab)
+  {
+    delete this._map[tab._id];
+    tab.onRemoved.removeListener(this.delete);
+  };
+
+
+  /* Windows */
+
+  Window = function(win)
+  {
+    this._id = win.id;
+    this.visible = win.status != "minimized";
+  };
+  Window.prototype = {
+    getAllTabs: function(callback)
+    {
+      chrome.tabs.query({windowId: this._id}, function(tabs)
+      {
+        callback(tabs.map(function(tab) { return new Tab(tab); }));
+      });
+    },
+    getActiveTab: function(callback)
+    {
+      chrome.tabs.query({windowId: this._id, active: true}, function(tabs)
+      {
+        callback(new Tab(tabs[0]));
+      });
+    },
+    openTab: function(url, callback)
+    {
+      var props = {windowId: this._id, url: url};
+
+      if (!callback)
+        chrome.tabs.create(props);
+      else
+        chrome.tabs.create(props, function(tab)
+        {
+          callback(new Tab(tab));
+        });
+    }
+  };
+
+
+  /* API */
+
+  ext.windows = {
+    getAll: function(callback)
+    {
+      chrome.windows.getAll(function(windows)
+      {
+        callback(windows.map(function(win)
+        {
+          return new Window(win);
+        }));
+      });
+    },
+    getLastFocused: function(callback)
+    {
+      chrome.windows.getLastFocused(function(win)
+      {
+        callback(new Window(win));
+      });
+    }
+  };
+
+  ext.tabs = {
+    onBeforeNavigate: new BeforeNavigateTabEventTarget(),
+    onCompleted: new CompletedTabEventTarget(),
+    onActivated: new ActivatedTabEventTarget(),
+    onRemoved: new RemovedTabEventTarget()
+  };
+
+  ext.webRequest = {
+    onBeforeRequest: new BeforeRequestEventTarget(),
+    handlerBehaviorChanged: chrome.webRequest.handlerBehaviorChanged
+  };
+})();