| <!DOCTYPE html> |
| <!-- |
| Copyright (c) 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. |
| --> |
| <link rel="import" href="/base/extension_registry_base.html"> |
| <script> |
| 'use strict'; |
| |
| tr.exportTo('tr.b', function() { |
| |
| var RegisteredTypeInfo = tr.b.RegisteredTypeInfo; |
| var ExtensionRegistryOptions = tr.b.ExtensionRegistryOptions; |
| |
| function decorateBasicExtensionRegistry(registry, extensionRegistryOptions) { |
| var savedStateStack = []; |
| registry.registeredTypeInfos_ = []; |
| |
| registry.register = function(constructor, |
| opt_metadata) { |
| if (registry.findIndexOfRegisteredConstructor( |
| constructor) !== undefined) |
| throw new Error('Handler already registered for ' + constructor); |
| |
| extensionRegistryOptions.validateConstructor(constructor); |
| |
| var metadata = {}; |
| for (var k in extensionRegistryOptions.defaultMetadata) |
| metadata[k] = extensionRegistryOptions.defaultMetadata[k]; |
| if (opt_metadata) { |
| for (var k in opt_metadata) |
| metadata[k] = opt_metadata[k]; |
| } |
| |
| var typeInfo = new RegisteredTypeInfo( |
| constructor, |
| metadata); |
| |
| var e = new Event('will-register'); |
| e.typeInfo = typeInfo; |
| registry.dispatchEvent(e); |
| |
| registry.registeredTypeInfos_.push(typeInfo); |
| |
| e = new Event('registry-changed'); |
| registry.dispatchEvent(e); |
| }; |
| |
| registry.pushCleanStateBeforeTest = function() { |
| savedStateStack.push(registry.registeredTypeInfos_); |
| registry.registeredTypeInfos_ = []; |
| |
| var e = new Event('registry-changed'); |
| registry.dispatchEvent(e); |
| }; |
| registry.popCleanStateAfterTest = function() { |
| registry.registeredTypeInfos_ = savedStateStack[0]; |
| savedStateStack.splice(0, 1); |
| |
| var e = new Event('registry-changed'); |
| registry.dispatchEvent(e); |
| }; |
| |
| registry.findIndexOfRegisteredConstructor = function(constructor) { |
| for (var i = 0; i < registry.registeredTypeInfos_.length; i++) |
| if (registry.registeredTypeInfos_[i].constructor == constructor) |
| return i; |
| return undefined; |
| }; |
| |
| registry.unregister = function(constructor) { |
| var foundIndex = registry.findIndexOfRegisteredConstructor(constructor); |
| if (foundIndex === undefined) |
| throw new Error(constructor + ' not registered'); |
| registry.registeredTypeInfos_.splice(foundIndex, 1); |
| |
| var e = new Event('registry-changed'); |
| registry.dispatchEvent(e); |
| }; |
| |
| registry.getAllRegisteredTypeInfos = function() { |
| return registry.registeredTypeInfos_; |
| }; |
| |
| registry.findTypeInfo = function(constructor) { |
| var foundIndex = this.findIndexOfRegisteredConstructor(constructor); |
| if (foundIndex !== undefined) |
| return this.registeredTypeInfos_[foundIndex]; |
| return undefined; |
| }; |
| |
| registry.findTypeInfoMatching = function(predicate, opt_this) { |
| opt_this = opt_this ? opt_this : undefined; |
| for (var i = 0; i < registry.registeredTypeInfos_.length; ++i) { |
| var typeInfo = registry.registeredTypeInfos_[i]; |
| if (predicate.call(opt_this, typeInfo)) |
| return typeInfo; |
| } |
| return extensionRegistryOptions.defaultTypeInfo; |
| }; |
| } |
| |
| return { |
| _decorateBasicExtensionRegistry: decorateBasicExtensionRegistry |
| }; |
| }); |
| </script> |
