chrome/browser/guest_view/web_view/chrome_web_view_guest_delegate.cc

   1 // Copyright 2014 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
   6 #include "chrome/browser/guest_view/web_view/chrome_web_view_guest_delegate.h"
   7
   8 #include "chrome/browser/extensions/chrome_extension_web_contents_observer.h"
   9 #include "chrome/browser/favicon/favicon_tab_helper.h"
  10 #include "chrome/browser/profiles/profile.h"
  11 #include "chrome/browser/renderer_context_menu/render_view_context_menu.h"
  12 #include "chrome/browser/ui/pdf/chrome_pdf_web_contents_helper_client.h"
  13 #include "chrome/common/chrome_version_info.h"
  14 #include "components/pdf/browser/pdf_web_contents_helper.h"
  15 #include "components/renderer_context_menu/context_menu_delegate.h"
  16 #include "extensions/browser/api/web_request/web_request_api.h"
  17 #include "extensions/browser/guest_view/web_view/web_view_constants.h"
  18
  19 #if defined(ENABLE_PRINTING)
  20 #if defined(ENABLE_PRINT_PREVIEW)
  21 #include "chrome/browser/printing/print_preview_message_handler.h"
  22 #include "chrome/browser/printing/print_view_manager.h"
  23 #else
  24 #include "chrome/browser/printing/print_view_manager_basic.h"
  25 #endif  // defined(ENABLE_PRINT_PREVIEW)
  26 #endif  // defined(ENABLE_PRINTING)
  27
  28 namespace extensions {
  29
  30 ChromeWebViewGuestDelegate::ChromeWebViewGuestDelegate(
  31     WebViewGuest* web_view_guest)
  32     : pending_context_menu_request_id_(0),
  33       chromevox_injected_(false),
  34       web_view_guest_(web_view_guest),
  35       weak_ptr_factory_(this) {
  36 }
  37
  38 ChromeWebViewGuestDelegate::~ChromeWebViewGuestDelegate() {
  39 }
  40
  41 bool ChromeWebViewGuestDelegate::HandleContextMenu(
  42     const content::ContextMenuParams& params) {
  43   ContextMenuDelegate* menu_delegate =
  44       ContextMenuDelegate::FromWebContents(guest_web_contents());
  45   DCHECK(menu_delegate);
  46
  47   pending_menu_ = menu_delegate->BuildMenu(guest_web_contents(), params);
  48
  49   // Pass it to embedder.
  50   int request_id = ++pending_context_menu_request_id_;
  51   scoped_ptr<base::DictionaryValue> args(new base::DictionaryValue());
  52   scoped_ptr<base::ListValue> items =
  53       MenuModelToValue(pending_menu_->menu_model());
  54   args->Set(webview::kContextMenuItems, items.release());
  55   args->SetInteger(webview::kRequestId, request_id);
  56   web_view_guest()->DispatchEventToView(
  57       new GuestViewBase::Event(webview::kEventContextMenu, args.Pass()));
  58   return true;
  59 }
  60
  61 // TODO(hanxi) Investigate which of these observers should move to the
  62 // extension module in the future.
  63 void ChromeWebViewGuestDelegate::OnAttachWebViewHelpers(
  64     content::WebContents* contents) {
  65   FaviconTabHelper::CreateForWebContents(contents);
  66   ChromeExtensionWebContentsObserver::CreateForWebContents(contents);
  67 #if defined(ENABLE_PRINTING)
  68 #if defined(ENABLE_PRINT_PREVIEW)
  69   printing::PrintViewManager::CreateForWebContents(contents);
  70   printing::PrintPreviewMessageHandler::CreateForWebContents(contents);
  71 #else
  72   printing::PrintViewManagerBasic::CreateForWebContents(contents);
  73 #endif  // defined(ENABLE_PRINT_PREVIEW)
  74 #endif  // defined(ENABLE_PRINTING)
  75   pdf::PDFWebContentsHelper::CreateForWebContentsWithClient(
  76       contents,
  77       scoped_ptr<pdf::PDFWebContentsHelperClient>(
  78           new ChromePDFWebContentsHelperClient()));
  79 }
  80
  81 void ChromeWebViewGuestDelegate::OnDidCommitProvisionalLoadForFrame(
  82     bool is_main_frame) {
  83   if (is_main_frame)
  84     chromevox_injected_ = false;
  85 }
  86
  87 void ChromeWebViewGuestDelegate::OnDidInitialize() {
  88 #if defined(OS_CHROMEOS)
  89   chromeos::AccessibilityManager* accessibility_manager =
  90       chromeos::AccessibilityManager::Get();
  91   CHECK(accessibility_manager);
  92   accessibility_subscription_ = accessibility_manager->RegisterCallback(
  93       base::Bind(&ChromeWebViewGuestDelegate::OnAccessibilityStatusChanged,
  94                  weak_ptr_factory_.GetWeakPtr()));
  95 #endif
  96 }
  97
  98 void ChromeWebViewGuestDelegate::OnDocumentLoadedInFrame(
  99     content::RenderFrameHost* render_frame_host) {
 100   if (!render_frame_host->GetParent())
 101     InjectChromeVoxIfNeeded(render_frame_host->GetRenderViewHost());
 102 }
 103
 104 void ChromeWebViewGuestDelegate::OnGuestDestroyed() {
 105   // Clean up custom context menu items for this guest.
 106   MenuManager* menu_manager = MenuManager::Get(
 107       Profile::FromBrowserContext(web_view_guest()->browser_context()));
 108   menu_manager->RemoveAllContextItems(MenuItem::ExtensionKey(
 109       web_view_guest()->owner_extension_id(),
 110       web_view_guest()->view_instance_id()));
 111 }
 112
 113 // static
 114 scoped_ptr<base::ListValue> ChromeWebViewGuestDelegate::MenuModelToValue(
 115     const ui::SimpleMenuModel& menu_model) {
 116   scoped_ptr<base::ListValue> items(new base::ListValue());
 117   for (int i = 0; i < menu_model.GetItemCount(); ++i) {
 118     base::DictionaryValue* item_value = new base::DictionaryValue();
 119     // TODO(lazyboy): We need to expose some kind of enum equivalent of
 120     // |command_id| instead of plain integers.
 121     item_value->SetInteger(webview::kMenuItemCommandId,
 122                            menu_model.GetCommandIdAt(i));
 123     item_value->SetString(webview::kMenuItemLabel, menu_model.GetLabelAt(i));
 124     items->Append(item_value);
 125   }
 126   return items.Pass();
 127 }
 128
 129 void ChromeWebViewGuestDelegate::OnShowContextMenu(
 130     int request_id,
 131     const MenuItemVector* items) {
 132   if (!pending_menu_.get())
 133     return;
 134
 135   // Make sure this was the correct request.
 136   if (request_id != pending_context_menu_request_id_)
 137     return;
 138
 139   // TODO(lazyboy): Implement.
 140   DCHECK(!items);
 141
 142   ContextMenuDelegate* menu_delegate =
 143       ContextMenuDelegate::FromWebContents(guest_web_contents());
 144   menu_delegate->ShowMenu(pending_menu_.Pass());
 145 }
 146
 147 void ChromeWebViewGuestDelegate::InjectChromeVoxIfNeeded(
 148     content::RenderViewHost* render_view_host) {
 149 #if defined(OS_CHROMEOS)
 150   if (!chromevox_injected_) {
 151     chromeos::AccessibilityManager* manager =
 152         chromeos::AccessibilityManager::Get();
 153     if (manager && manager->IsSpokenFeedbackEnabled()) {
 154       manager->InjectChromeVox(render_view_host);
 155       chromevox_injected_ = true;
 156     }
 157   }
 158 #endif
 159 }
 160
 161 #if defined(OS_CHROMEOS)
 162 void ChromeWebViewGuestDelegate::OnAccessibilityStatusChanged(
 163     const chromeos::AccessibilityStatusEventDetails& details) {
 164   if (details.notification_type == chromeos::ACCESSIBILITY_MANAGER_SHUTDOWN) {
 165     accessibility_subscription_.reset();
 166   } else if (details.notification_type ==
 167       chromeos::ACCESSIBILITY_TOGGLE_SPOKEN_FEEDBACK) {
 168     if (details.enabled)
 169       InjectChromeVoxIfNeeded(guest_web_contents()->GetRenderViewHost());
 170     else
 171       chromevox_injected_ = false;
 172   }
 173 }
 174 #endif
 175
 176 }  // namespace extensions