Deathamns
10 years ago
committed by
gorhill
1 changed files with 181 additions and 0 deletions
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/******************************************************************************* |
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µBlock - a Chromium browser extension to block requests. |
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Copyright (C) 2014 The µBlock authors |
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This program is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 3 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program. If not, see {http://www.gnu.org/licenses/}.
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Home: https://github.com/gorhill/uBlock
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*/ |
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/* global Services */ |
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// For background page
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/******************************************************************************/ |
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(function() { |
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'use strict'; |
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/******************************************************************************/ |
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const {classes: Cc, interfaces: Ci, utils: Cu} = Components; |
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Cu['import']('resource://gre/modules/Services.jsm'); |
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/******************************************************************************/ |
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self.vAPI = self.vAPI || {}; |
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vAPI.firefox = true; |
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/******************************************************************************/ |
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vAPI.messaging = { |
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gmm: Cc['@mozilla.org/globalmessagemanager;1'].getService(Ci.nsIMessageListenerManager), |
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frameScript: 'chrome://ublock/content/frameScript.js', |
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listeners: {}, |
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defaultHandler: null, |
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NOOPFUNC: function(){}, |
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UNHANDLED: 'vAPI.messaging.notHandled' |
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}; |
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/******************************************************************************/ |
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vAPI.messaging.gmm.loadFrameScript(vAPI.messaging.frameScript, true); |
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/******************************************************************************/ |
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vAPI.messaging.listen = function(listenerName, callback) { |
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this.listeners[listenerName] = callback; |
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}; |
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/******************************************************************************/ |
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vAPI.messaging.onMessage = function(request) { |
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var messageManager = request.target.messageManager; |
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var listenerId = request.data.portName.split('|'); |
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var portName = listenerId[1]; |
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listenerId = listenerId[0]; |
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var callback = vAPI.messaging.NOOPFUNC; |
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if ( request.data.requestId !== undefined ) { |
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callback = function(response) { |
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messageManager.sendAsyncMessage( |
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listenerId, |
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JSON.stringify({ |
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requestId: request.data.requestId, |
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portName: portName, |
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msg: response !== undefined ? response : null |
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}) |
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); |
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}; |
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} |
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// TODO:
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var sender = { |
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tab: { |
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id: 0 |
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} |
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}; |
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// Specific handler
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var r = vAPI.messaging.UNHANDLED; |
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var listener = vAPI.messaging.listeners[portName]; |
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if ( typeof listener === 'function' ) { |
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r = listener(request.data.msg, sender, callback); |
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} |
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if ( r !== vAPI.messaging.UNHANDLED ) { |
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return; |
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} |
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// Default handler
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r = vAPI.messaging.defaultHandler(request.data.msg, sender, callback); |
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if ( r !== vAPI.messaging.UNHANDLED ) { |
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return; |
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} |
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console.error('µBlock> messaging > unknown request: %o', request.data); |
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// Unhandled:
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// Need to callback anyways in case caller expected an answer, or
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// else there is a memory leak on caller's side
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callback(); |
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}; |
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/******************************************************************************/ |
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vAPI.messaging.setup = function(defaultHandler) { |
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// Already setup?
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if ( this.defaultHandler !== null ) { |
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return; |
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} |
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if ( typeof defaultHandler !== 'function' ) { |
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defaultHandler = function(){ return vAPI.messaging.UNHANDLED; }; |
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} |
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this.defaultHandler = defaultHandler; |
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this.gmm.addMessageListener(vAPI.app.name + ':background', this.onMessage); |
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}; |
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/******************************************************************************/ |
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vAPI.messaging.broadcast = function(msg) { |
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this.gmm.broadcastAsyncMessage(vAPI.app.name + ':broadcast', msg); |
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}; |
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/******************************************************************************/ |
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vAPI.lastError = function() { |
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return null; |
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}; |
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/******************************************************************************/ |
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// clean up when the extension is disabled
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window.addEventListener('unload', function() { |
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vAPI.messaging.gmm.removeMessageListener( |
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app.name + ':background', |
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vAPI.messaging.postMessage |
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); |
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vAPI.messaging.gmm.removeDelayedFrameScript(vAPI.messaging.frameScript); |
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// close extension tabs
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var enumerator = Services.wm.getEnumerator('navigator:browser'); |
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var host = 'ublock'; |
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var gBrowser, tabs, i, extURI; |
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while (enumerator.hasMoreElements()) { |
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gBrowser = enumerator.getNext().gBrowser; |
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tabs = gBrowser.tabs; |
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i = tabs.length; |
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while (i--) { |
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extURI = tabs[i].linkedBrowser.currentURI; |
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if (extURI.scheme === 'chrome' && extURI.host === host) { |
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gBrowser.removeTab(tabs[i]); |
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} |
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} |
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} |
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}); |
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/******************************************************************************/ |
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})(); |
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/******************************************************************************/ |
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