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_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/browsing_data/storage_partition_http_cache_data_remover.h"
  15 #include "components/guest_view/browser/guest_view_event.h"
  16 #include "components/renderer_context_menu/context_menu_delegate.h"
  17 #include "content/public/browser/render_process_host.h"
  18 #include "extensions/browser/api/web_request/web_request_api.h"
  19 #include "extensions/browser/guest_view/web_view/web_view_constants.h"
  20
  21 using guest_view::GuestViewEvent;
  22
  23 namespace extensions {
  24
  25 ChromeWebViewGuestDelegate::ChromeWebViewGuestDelegate(
  26     WebViewGuest* web_view_guest)
  27     : pending_context_menu_request_id_(0),
  28       chromevox_injected_(false),
  29       web_view_guest_(web_view_guest),
  30       weak_ptr_factory_(this) {
  31 }
  32
  33 ChromeWebViewGuestDelegate::~ChromeWebViewGuestDelegate() {
  34 }
  35
  36 bool ChromeWebViewGuestDelegate::HandleContextMenu(
  37     const content::ContextMenuParams& params) {
  38   ContextMenuDelegate* menu_delegate =
  39       ContextMenuDelegate::FromWebContents(guest_web_contents());
  40   DCHECK(menu_delegate);
  41
  42   pending_menu_ = menu_delegate->BuildMenu(guest_web_contents(), params);
  43   // It's possible for the returned menu to be null, so early out to avoid
  44   // a crash. TODO(wjmaclean): find out why it's possible for this to happen
  45   // in the first place, and if it's an error.
  46   if (!pending_menu_)
  47     return false;
  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 GuestViewEvent(webview::kEventContextMenuShow, args.Pass()));
  58   return true;
  59 }
  60
  61 void ChromeWebViewGuestDelegate::OnDidInitialize() {
  62 #if defined(OS_CHROMEOS)
  63   chromeos::AccessibilityManager* accessibility_manager =
  64       chromeos::AccessibilityManager::Get();
  65   CHECK(accessibility_manager);
  66   accessibility_subscription_ = accessibility_manager->RegisterCallback(
  67       base::Bind(&ChromeWebViewGuestDelegate::OnAccessibilityStatusChanged,
  68                  weak_ptr_factory_.GetWeakPtr()));
  69 #endif
  70 }
  71
  72 void ChromeWebViewGuestDelegate::OnGuestDestroyed() {
  73   // Clean up custom context menu items for this guest.
  74   MenuManager* menu_manager = MenuManager::Get(
  75       Profile::FromBrowserContext(web_view_guest()->browser_context()));
  76   menu_manager->RemoveAllContextItems(MenuItem::ExtensionKey(
  77       web_view_guest()->owner_host(),
  78       web_view_guest()->view_instance_id()));
  79 }
  80
  81 // static
  82 scoped_ptr<base::ListValue> ChromeWebViewGuestDelegate::MenuModelToValue(
  83     const ui::SimpleMenuModel& menu_model) {
  84   scoped_ptr<base::ListValue> items(new base::ListValue());
  85   for (int i = 0; i < menu_model.GetItemCount(); ++i) {
  86     base::DictionaryValue* item_value = new base::DictionaryValue();
  87     // TODO(lazyboy): We need to expose some kind of enum equivalent of
  88     // |command_id| instead of plain integers.
  89     item_value->SetInteger(webview::kMenuItemCommandId,
  90                            menu_model.GetCommandIdAt(i));
  91     item_value->SetString(webview::kMenuItemLabel, menu_model.GetLabelAt(i));
  92     items->Append(item_value);
  93   }
  94   return items.Pass();
  95 }
  96
  97 void ChromeWebViewGuestDelegate::OnShowContextMenu(
  98     int request_id,
  99     const MenuItemVector* items) {
 100   if (!pending_menu_.get())
 101     return;
 102
 103   // Make sure this was the correct request.
 104   if (request_id != pending_context_menu_request_id_)
 105     return;
 106
 107   // TODO(lazyboy): Implement.
 108   DCHECK(!items);
 109
 110   ContextMenuDelegate* menu_delegate =
 111       ContextMenuDelegate::FromWebContents(guest_web_contents());
 112   menu_delegate->ShowMenu(pending_menu_.Pass());
 113 }
 114
 115 void ChromeWebViewGuestDelegate::InjectChromeVoxIfNeeded(
 116     content::RenderViewHost* render_view_host) {
 117 #if defined(OS_CHROMEOS)
 118   if (!chromevox_injected_) {
 119     chromeos::AccessibilityManager* manager =
 120         chromeos::AccessibilityManager::Get();
 121     if (manager && manager->IsSpokenFeedbackEnabled()) {
 122       manager->InjectChromeVox(render_view_host);
 123       chromevox_injected_ = true;
 124     }
 125   }
 126 #endif
 127 }
 128
 129 #if defined(OS_CHROMEOS)
 130 void ChromeWebViewGuestDelegate::OnAccessibilityStatusChanged(
 131     const chromeos::AccessibilityStatusEventDetails& details) {
 132   if (details.notification_type == chromeos::ACCESSIBILITY_MANAGER_SHUTDOWN) {
 133     accessibility_subscription_.reset();
 134   } else if (details.notification_type ==
 135       chromeos::ACCESSIBILITY_TOGGLE_SPOKEN_FEEDBACK) {
 136     if (details.enabled)
 137       InjectChromeVoxIfNeeded(guest_web_contents()->GetRenderViewHost());
 138     else
 139       chromevox_injected_ = false;
 140   }
 141 }
 142 #endif
 143
 144 }  // namespace extensions