1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Custom binding for the contextMenus API. 6 7 var binding = require('binding').Binding.create('contextMenus'); 8 9 var contextMenuNatives = requireNative('context_menus'); 10 var sendRequest = require('sendRequest').sendRequest; 11 var Event = require('event_bindings').Event; 12 13 binding.registerCustomHook(function(bindingsAPI) { 14 var apiFunctions = bindingsAPI.apiFunctions; 15 16 var contextMenus = {}; 17 contextMenus.generatedIdHandlers = {}; 18 contextMenus.stringIdHandlers = {}; 19 var eventName = 'contextMenus'; 20 contextMenus.event = new Event(eventName); 21 contextMenus.getIdFromCreateProperties = function(prop) { 22 if (typeof(prop.id) !== 'undefined') 23 return prop.id; 24 return prop.generatedId; 25 }; 26 contextMenus.handlersForId = function(id) { 27 if (typeof(id) === 'number') 28 return contextMenus.generatedIdHandlers; 29 return contextMenus.stringIdHandlers; 30 }; 31 contextMenus.ensureListenerSetup = function() { 32 if (contextMenus.listening) { 33 return; 34 } 35 contextMenus.listening = true; 36 contextMenus.event.addListener(function() { 37 // An extension context menu item has been clicked on - fire the onclick 38 // if there is one. 39 var id = arguments[0].menuItemId; 40 var onclick = contextMenus.handlersForId(id)[id]; 41 if (onclick) { 42 $Function.apply(onclick, null, arguments); 43 } 44 }); 45 }; 46 47 apiFunctions.setHandleRequest('create', function() { 48 var args = arguments; 49 var id = contextMenuNatives.GetNextContextMenuId(); 50 args[0].generatedId = id; 51 var optArgs = { 52 customCallback: this.customCallback, 53 }; 54 sendRequest(this.name, args, this.definition.parameters, optArgs); 55 return contextMenus.getIdFromCreateProperties(args[0]); 56 }); 57 58 apiFunctions.setCustomCallback('create', function(name, request, response) { 59 if (chrome.runtime.lastError) { 60 return; 61 } 62 63 var id = contextMenus.getIdFromCreateProperties(request.args[0]); 64 65 // Set up the onclick handler if we were passed one in the request. 66 var onclick = request.args.length ? request.args[0].onclick : null; 67 if (onclick) { 68 contextMenus.ensureListenerSetup(); 69 contextMenus.handlersForId(id)[id] = onclick; 70 } 71 }); 72 73 apiFunctions.setCustomCallback('remove', function(name, request, response) { 74 if (chrome.runtime.lastError) { 75 return; 76 } 77 var id = request.args[0]; 78 delete contextMenus.handlersForId(id)[id]; 79 }); 80 81 apiFunctions.setCustomCallback('update', function(name, request, response) { 82 if (chrome.runtime.lastError) { 83 return; 84 } 85 var id = request.args[0]; 86 if (request.args[1].onclick) { 87 contextMenus.handlersForId(id)[id] = request.args[1].onclick; 88 } 89 }); 90 91 apiFunctions.setCustomCallback('removeAll', 92 function(name, request, response) { 93 if (chrome.runtime.lastError) { 94 return; 95 } 96 contextMenus.generatedIdHandlers = {}; 97 contextMenus.stringIdHandlers = {}; 98 }); 99 }); 100 101 exports.binding = binding.generate(); 102