chrome/browser/ui/webui/components_ui.cc

   1 // Copyright 2013 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 #include "chrome/browser/ui/webui/components_ui.h"
   6
   7 #include <algorithm>
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/values.h"
  12 #include "chrome/browser/browser_process.h"
  13 #include "chrome/browser/component_updater/component_updater_service.h"
  14 #include "chrome/browser/ui/browser.h"
  15 #include "chrome/browser/ui/browser_window.h"
  16 #include "chrome/common/chrome_paths.h"
  17 #include "chrome/common/url_constants.h"
  18 #include "content/public/browser/web_ui.h"
  19 #include "content/public/browser/web_ui_data_source.h"
  20 #include "content/public/browser/web_ui_message_handler.h"
  21 #include "grit/browser_resources.h"
  22 #include "grit/generated_resources.h"
  23 #include "grit/theme_resources.h"
  24 #include "ui/base/l10n/l10n_util.h"
  25 #include "ui/base/resource/resource_bundle.h"
  26
  27 #if defined(OS_CHROMEOS)
  28 #include "chrome/browser/ui/webui/chromeos/ui_account_tweaks.h"
  29 #endif
  30
  31 using content::WebUIMessageHandler;
  32
  33 namespace {
  34
  35 content::WebUIDataSource* CreateComponentsUIHTMLSource() {
  36   content::WebUIDataSource* source =
  37       content::WebUIDataSource::Create(chrome::kChromeUIComponentsHost);
  38   source->SetUseJsonJSFormatV2();
  39
  40   source->AddLocalizedString("componentsTitle", IDS_COMPONENTS_TITLE);
  41   source->AddLocalizedString("componentsNoneInstalled",
  42                              IDS_COMPONENTS_NONE_INSTALLED);
  43   source->AddLocalizedString("componentVersion", IDS_COMPONENTS_VERSION);
  44   source->AddLocalizedString("checkUpdate", IDS_COMPONENTS_CHECK_FOR_UPDATE);
  45   source->AddLocalizedString("noComponents", IDS_COMPONENTS_NO_COMPONENTS);
  46
  47   source->SetJsonPath("strings.js");
  48   source->AddResourcePath("components.js", IDR_COMPONENTS_JS);
  49   source->SetDefaultResource(IDR_COMPONENTS_HTML);
  50 #if defined(OS_CHROMEOS)
  51   chromeos::AddAccountUITweaksLocalizedValues(source);
  52 #endif
  53   return source;
  54 }
  55
  56 ////////////////////////////////////////////////////////////////////////////////
  57 //
  58 // ComponentsDOMHandler
  59 //
  60 ////////////////////////////////////////////////////////////////////////////////
  61
  62 // The handler for Javascript messages for the chrome://components/ page.
  63 class ComponentsDOMHandler : public WebUIMessageHandler {
  64  public:
  65   ComponentsDOMHandler();
  66   virtual ~ComponentsDOMHandler() {}
  67
  68   // WebUIMessageHandler implementation.
  69   virtual void RegisterMessages() OVERRIDE;
  70
  71   // Callback for the "requestComponentsData" message.
  72   void HandleRequestComponentsData(const base::ListValue* args);
  73
  74   // Callback for the "checkUpdate" message.
  75   void HandleCheckUpdate(const base::ListValue* args);
  76
  77  private:
  78   void LoadComponents();
  79
  80   content::NotificationRegistrar registrar_;
  81
  82   DISALLOW_COPY_AND_ASSIGN(ComponentsDOMHandler);
  83 };
  84
  85 ComponentsDOMHandler::ComponentsDOMHandler() {
  86 }
  87
  88 void ComponentsDOMHandler::RegisterMessages() {
  89   web_ui()->RegisterMessageCallback("requestComponentsData",
  90       base::Bind(&ComponentsDOMHandler::HandleRequestComponentsData,
  91                  base::Unretained(this)));
  92
  93   web_ui()->RegisterMessageCallback("checkUpdate",
  94       base::Bind(&ComponentsDOMHandler::HandleCheckUpdate,
  95                  base::Unretained(this)));
  96 }
  97
  98 void ComponentsDOMHandler::HandleRequestComponentsData(
  99     const base::ListValue* args) {
 100   LoadComponents();
 101 }
 102
 103 // This function is called when user presses button from html UI.
 104 // TODO(shrikant): We need to make this button available based on current
 105 // state e.g. If component state is currently updating then we need to disable
 106 // button. (https://code.google.com/p/chromium/issues/detail?id=272540)
 107 void ComponentsDOMHandler::HandleCheckUpdate(const base::ListValue* args) {
 108   if (args->GetSize() != 1) {
 109     NOTREACHED();
 110     return;
 111   }
 112
 113   std::string component_id;
 114   if (!args->GetString(0, &component_id)) {
 115     NOTREACHED();
 116     return;
 117   }
 118
 119   ComponentsUI::OnDemandUpdate(component_id);
 120 }
 121
 122 void ComponentsDOMHandler::LoadComponents() {
 123   component_updater::ComponentUpdateService* cus =
 124       g_browser_process->component_updater();
 125   std::vector<component_updater::CrxComponentInfo> components;
 126   cus->GetComponents(&components);
 127
 128   // Construct DictionaryValues to return to UI.
 129   base::ListValue* component_list = new base::ListValue();
 130   for (size_t j = 0; j < components.size(); ++j) {
 131     const component_updater::CrxComponentInfo& component = components[j];
 132
 133     base::DictionaryValue* component_entry = new base::DictionaryValue();
 134     component_entry->SetString("id", component.id);
 135     component_entry->SetString("name", component.name);
 136     component_entry->SetString("version", component.version);
 137
 138     component_list->Append(component_entry);
 139   }
 140
 141   base::DictionaryValue results;
 142   results.Set("components", component_list);
 143   web_ui()->CallJavascriptFunction("returnComponentsData", results);
 144 }
 145
 146 }  // namespace
 147
 148 ///////////////////////////////////////////////////////////////////////////////
 149 //
 150 // ComponentsUI
 151 //
 152 ///////////////////////////////////////////////////////////////////////////////
 153
 154 ComponentsUI::ComponentsUI(content::WebUI* web_ui) : WebUIController(web_ui) {
 155   web_ui->AddMessageHandler(new ComponentsDOMHandler());
 156
 157   // Set up the chrome://components/ source.
 158   Profile* profile = Profile::FromWebUI(web_ui);
 159   content::WebUIDataSource::Add(profile, CreateComponentsUIHTMLSource());
 160 }
 161
 162 // static
 163 void ComponentsUI::OnDemandUpdate(const std::string& component_id) {
 164   component_updater::ComponentUpdateService* cus =
 165       g_browser_process->component_updater();
 166   cus->OnDemandUpdate(component_id);
 167 }
 168
 169 // static
 170 base::RefCountedMemory* ComponentsUI::GetFaviconResourceBytes(
 171       ui::ScaleFactor scale_factor) {
 172   return ResourceBundle::GetSharedInstance().
 173       LoadDataResourceBytesForScale(IDR_PLUGINS_FAVICON, scale_factor);
 174 }