From 0feefd6659e0718f978a0fbc5ec4ffd0b98e7293 Mon Sep 17 00:00:00 2001 From: Raymond Hill Date: Sat, 15 Nov 2014 16:15:11 -0200 Subject: [PATCH] further separate platform-specific code --- meta/crx/vapi-client.js | 145 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 145 insertions(+) create mode 100644 meta/crx/vapi-client.js diff --git a/meta/crx/vapi-client.js b/meta/crx/vapi-client.js new file mode 100644 index 0000000..69be8f9 --- /dev/null +++ b/meta/crx/vapi-client.js @@ -0,0 +1,145 @@ +/******************************************************************************* + + µBlock - a Chromium browser extension to block requests. + Copyright (C) 2014 The µBlock authors + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program 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 this program. If not, see {http://www.gnu.org/licenses/}. + + Home: https://github.com/gorhill/uBlock +*/ + +// For non background pages + +/******************************************************************************/ + +(function() { + +'use strict'; + +/******************************************************************************/ + +self.vAPI = self.vAPI || {}; +self.vAPI.chrome = true; + +/******************************************************************************/ + +var messagingConnector = function(response) { + if ( !response ) { + return; + } + + var channel, listener; + + if ( response.broadcast === true ) { + for ( channel in vAPI.messaging.channels ) { + listener = vAPI.messaging.channels[channel].listener; + if ( typeof listener === 'function' ) { + listener(response.msg); + } + } + return; + } + + if ( response.requestId ) { + listener = vAPI.messaging.listeners[response.requestId]; + delete vAPI.messaging.listeners[response.requestId]; + delete response.requestId; + } + + if ( !listener ) { + channel = vAPI.messaging.channels[response.portName]; + listener = channel && channel.listener; + } + + if ( typeof listener === 'function' ) { + listener(response.msg); + } +}; + +/******************************************************************************/ + +var uniqueId = function() { + return parseInt(Math.random() * 1e10, 10).toString(36); +}; + +/******************************************************************************/ + +self.vAPI.messaging = { + port: null, + channels: {}, + listeners: {}, + requestId: 1, + connectorId: uniqueId(), + + setup: function() { + this.port = chrome.runtime.connect({name: this.connectorId}); + this.port.onMessage.addListener(messagingConnector); + }, + + close: function() { + if ( this.port === null ) { + return; + } + this.port.disconnect(); + this.port.onMessage.removeListener(messagingConnector); + this.port = null; + this.channels = {}; + this.listeners = {}; + }, + + channel: function(channelName, callback) { + if ( !channelName ) { + return; + } + + this.channels[channelName] = { + portName: channelName, + listener: typeof callback === 'function' ? callback : null, + send: function(message, callback) { + if ( vAPI.messaging.port === null ) { + vAPI.messaging.setup(); + } + + message = { + portName: this.portName, + msg: message + }; + + if ( callback ) { + message.requestId = vAPI.messaging.requestId++; + vAPI.messaging.listeners[message.requestId] = callback; + } + + vAPI.messaging.port.postMessage(message); + }, + close: function() { + delete vAPI.messaging.channels[this.portName]; + } + }; + + return this.channels[channelName]; + } +}; + +/******************************************************************************/ + +self.vAPI.canExecuteContentScript = function() { + return true; +}; + +/******************************************************************************/ + +})(); + +/******************************************************************************/ \ No newline at end of file