Merge custom bindings for context menus

chrome/renderer/resources/extensions/chrome_web_view_internal_custom_bindings.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Custom binding for <webview> contextMenus API.
-// Note that this file mimics custom bindings for chrome.contextMenus API
-// which resides in context_menus_custom_bindings.js. The functions in this file
-// have an extra instanceId parameter in the beginning, which corresponds to the
-// id of the <webview>.
-//
-// TODO(lazyboy): Share common code /w context_menus_custom_bindings.js.
-
-var EventBindings = require('event_bindings');
 var binding = require('binding').Binding.create('chromeWebViewInternal');
-var contextMenuNatives = requireNative('context_menus');
-var sendRequest = require('sendRequest').sendRequest;
-var lastError = require('lastError');
+var createContextMenusHandlers = require('contextMenusHandlers').create;

[not at google - send to devlin, 2015/02/25 19:03:53]

I'd rather imports import the module, not a method from the module, unless
you're importing a class.

[robwu, 2015/02/26 09:33:46]

Done.

 
 binding.registerCustomHook(function(bindingsAPI) {
   var apiFunctions = bindingsAPI.apiFunctions;
 
-  var webviewContextMenus = {};
-  webviewContextMenus.generatedIdHandlers = {};
-  webviewContextMenus.stringIdHandlers = {};
+  var impl = createContextMenusHandlers(/* isWebview = */ true);

[lazyboy, 2015/02/25 17:58:42]

nit: the most followed pattern here is:
createContextMenusHandlers(true /* isWebView */);

[robwu, 2015/02/26 09:33:46]

Done.

 
-  // Per item event handler.
-  var ename = 'webViewInternal.contextMenus';
-  webviewContextMenus.event = new EventBindings.Event(ename);
+  apiFunctions.setHandleRequest('contextMenusCreate',
+      impl.requestHandlers.create);

[not at google - send to devlin, 2015/02/25 19:03:53]

Can we call this "handlers" rather than "impl"?

[robwu, 2015/02/26 09:33:46]

Done.

 
-  webviewContextMenus.getIdFromCreateProperties = function(prop) {
-    if (typeof(prop.id) !== 'undefined')
-      return prop.id;
-    return prop.generatedId;
-  };
+  apiFunctions.setCustomCallback('contextMenusCreate', impl.callbacks.create);
 
-  webviewContextMenus.handlersForId = function(instanceId, id) {
-    if (typeof(id) === 'number') {
-      if (!webviewContextMenus.generatedIdHandlers[instanceId]) {
-        webviewContextMenus.generatedIdHandlers[instanceId] = {};
-      }
-      return webviewContextMenus.generatedIdHandlers[instanceId];
-    }
+  apiFunctions.setCustomCallback('contextMenusUpdate', impl.callbacks.update);
 
-    if (!webviewContextMenus.stringIdHandlers[instanceId]) {
-      webviewContextMenus.stringIdHandlers[instanceId] = {};
-    }
-    return webviewContextMenus.stringIdHandlers[instanceId];
-  };
-
-  webviewContextMenus.ensureListenerSetup = function() {
-    if (webviewContextMenus.listening) {
-      return;
-    }
-    webviewContextMenus.listening = true;
-    webviewContextMenus.event.addListener(function() {
-      // An extension context menu item has been clicked on - fire the onclick
-      // if there is one.
-      var id = arguments[0].menuItemId;
-      var instanceId = arguments[0].webviewInstanceId;
-      delete arguments[0].webviewInstanceId;
-      var onclick = webviewContextMenus.handlersForId(instanceId, id)[id];
-      if (onclick) {
-        $Function.apply(onclick, null, arguments);
-      }
-    });
-  };
-
-  apiFunctions.setHandleRequest('contextMenusCreate', function() {
-    var args = arguments;
-    var id = contextMenuNatives.GetNextContextMenuId();
-    args[1].generatedId = id;
-
-    var optArgs = {
-      customCallback: this.customCallback,
-    };
-
-    sendRequest(this.name, args, this.definition.parameters, optArgs);
-    return webviewContextMenus.getIdFromCreateProperties(args[1]);
-  });
-
-  apiFunctions.setCustomCallback('contextMenusCreate',
-      function(name, request, callback, response) {
-    if (lastError.hasError(chrome)) {
-      if (callback)
-        callback();
-      return;
-    }
-
-    var instanceId = request.args[0];
-    var id = webviewContextMenus.getIdFromCreateProperties(request.args[1]);
-    var onclick = request.args.length ? request.args[1].onclick : null;
-    if (onclick) {
-      webviewContextMenus.ensureListenerSetup();
-      webviewContextMenus.handlersForId(instanceId, id)[id] = onclick;
-    }
-    if (callback)
-      callback();
-  });
-
-  apiFunctions.setCustomCallback('contextMenusUpdate',
-      function(name, request, callback, response) {
-    if (lastError.hasError(chrome)) {
-      if (callback)
-        callback();
-      return;
-    }
-    var instanceId = request.args[0];
-    var id = request.args[1];
-    if (request.args[2].onclick) {
-      webviewContextMenus.handlersForId(instanceId, id)[id] =
-          request.args[2].onclick;
-    }
-    if (callback)
-      callback();
-  });
-
-  apiFunctions.setCustomCallback('contextMenusRemove',
-      function(name, request, callback, response) {
-    if (lastError.hasError(chrome)) {
-      if (callback)
-        callback();
-      return;
-    }
-    var instanceId = request.args[0];
-    var id = request.args[1];
-    delete webviewContextMenus.handlersForId(instanceId, id)[id];
-    if (callback)
-      callback();
-  });
+  apiFunctions.setCustomCallback('contextMenusRemove', impl.callbacks.remove);
 
   apiFunctions.setCustomCallback('contextMenusRemoveAll',
-      function(name, request, callback, response) {
-    if (lastError.hasError(chrome)) {
-      if (callback)
-        callback();
-      return;
-    }
-    var instanceId = request.args[0];
-    webviewContextMenus.stringIdHandlers[instanceId] = {};
-    webviewContextMenus.generatedIdHandlers[instanceId] = {};
-    if (callback)
-      callback();
-  });
+      impl.callbacks.removeAll);
 
 });
 
 exports.ChromeWebView = binding.generate();