content/public/browser/web_contents_delegate.cc

   1 // Copyright (c) 2012 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 "content/public/browser/web_contents_delegate.h"
   6
   7 #include "base/compiler_specific.h"
   8 #include "base/logging.h"
   9 #include "base/memory/singleton.h"
  10 #include "content/public/browser/render_view_host.h"
  11 #include "content/public/browser/web_contents.h"
  12 #include "content/public/common/url_constants.h"
  13 #include "content/public/common/bindings_policy.h"
  14 #include "ui/gfx/rect.h"
  15
  16 namespace content {
  17
  18 WebContentsDelegate::WebContentsDelegate() {
  19 }
  20
  21 WebContents* WebContentsDelegate::OpenURLFromTab(WebContents* source,
  22                                                  const OpenURLParams& params) {
  23   return NULL;
  24 }
  25
  26 bool WebContentsDelegate::IsPopupOrPanel(const WebContents* source) const {
  27   return false;
  28 }
  29
  30 bool WebContentsDelegate::CanLoadDataURLsInWebUI() const { return false; }
  31
  32 bool WebContentsDelegate::CanOverscrollContent() const { return false; }
  33
  34 gfx::Rect WebContentsDelegate::GetRootWindowResizerRect() const {
  35   return gfx::Rect();
  36 }
  37
  38 bool WebContentsDelegate::ShouldSuppressDialogs() {
  39   return false;
  40 }
  41
  42 bool WebContentsDelegate::AddMessageToConsole(WebContents* source,
  43                                               int32 level,
  44                                               const string16& message,
  45                                               int32 line_no,
  46                                               const string16& source_id) {
  47   return false;
  48 }
  49
  50 void WebContentsDelegate::BeforeUnloadFired(WebContents* web_contents,
  51                                             bool proceed,
  52                                             bool* proceed_to_fire_unload) {
  53   *proceed_to_fire_unload = true;
  54 }
  55
  56 bool WebContentsDelegate::ShouldFocusLocationBarByDefault(WebContents* source) {
  57   return false;
  58 }
  59
  60 bool WebContentsDelegate::ShouldFocusPageAfterCrash() {
  61   return true;
  62 }
  63
  64 bool WebContentsDelegate::TakeFocus(WebContents* source, bool reverse) {
  65   return false;
  66 }
  67
  68 int WebContentsDelegate::GetExtraRenderViewHeight() const {
  69   return 0;
  70 }
  71
  72 void WebContentsDelegate::CanDownload(
  73     RenderViewHost* render_view_host,
  74     int request_id,
  75     const std::string& request_method,
  76     const base::Callback<void(bool)>& callback) {
  77   callback.Run(true);
  78 }
  79
  80 bool WebContentsDelegate::HandleContextMenu(
  81     const content::ContextMenuParams& params) {
  82   return false;
  83 }
  84
  85 void WebContentsDelegate::ViewSourceForTab(WebContents* source,
  86                                            const GURL& page_url) {
  87   // Fall back implementation based entirely on the view-source scheme.
  88   // It suffers from http://crbug.com/523 and that is why browser overrides
  89   // it with proper implementation.
  90   GURL url = GURL(chrome::kViewSourceScheme + std::string(":") +
  91                       page_url.spec());
  92   OpenURLFromTab(source, OpenURLParams(url, Referrer(),
  93                                        NEW_FOREGROUND_TAB,
  94                                        PAGE_TRANSITION_LINK, false));
  95 }
  96
  97 void WebContentsDelegate::ViewSourceForFrame(WebContents* source,
  98                                              const GURL& frame_url,
  99                                              const std::string& content_state) {
 100   // Same as ViewSourceForTab, but for given subframe.
 101   GURL url = GURL(chrome::kViewSourceScheme + std::string(":") +
 102                       frame_url.spec());
 103   OpenURLFromTab(source, OpenURLParams(url, Referrer(),
 104                                        NEW_FOREGROUND_TAB,
 105                                        PAGE_TRANSITION_LINK, false));
 106 }
 107
 108 bool WebContentsDelegate::PreHandleKeyboardEvent(
 109     WebContents* source,
 110     const NativeWebKeyboardEvent& event,
 111     bool* is_keyboard_shortcut) {
 112   return false;
 113 }
 114
 115 bool WebContentsDelegate::OnGoToEntryOffset(int offset) {
 116   return true;
 117 }
 118
 119 bool WebContentsDelegate::ShouldCreateWebContents(
 120     WebContents* web_contents,
 121     int route_id,
 122     WindowContainerType window_container_type,
 123     const string16& frame_name,
 124     const GURL& target_url) {
 125   return true;
 126 }
 127
 128 JavaScriptDialogManager* WebContentsDelegate::GetJavaScriptDialogManager() {
 129   return NULL;
 130 }
 131
 132 bool WebContentsDelegate::IsFullscreenForTabOrPending(
 133     const WebContents* web_contents) const {
 134   return false;
 135 }
 136
 137 content::ColorChooser* WebContentsDelegate::OpenColorChooser(
 138     WebContents* web_contents,
 139     int color_chooser_id,
 140     SkColor color) {
 141   return NULL;
 142 }
 143
 144 bool WebContentsDelegate::RequestPpapiBrokerPermission(
 145     WebContents* web_contents,
 146     const GURL& url,
 147     const base::FilePath& plugin_path,
 148     const base::Callback<void(bool)>& callback) {
 149   return false;
 150 }
 151
 152 WebContentsDelegate::~WebContentsDelegate() {
 153   while (!attached_contents_.empty()) {
 154     WebContents* web_contents = *attached_contents_.begin();
 155     web_contents->SetDelegate(NULL);
 156   }
 157   DCHECK(attached_contents_.empty());
 158 }
 159
 160 void WebContentsDelegate::Attach(WebContents* web_contents) {
 161   DCHECK(attached_contents_.find(web_contents) == attached_contents_.end());
 162   attached_contents_.insert(web_contents);
 163 }
 164
 165 void WebContentsDelegate::Detach(WebContents* web_contents) {
 166   DCHECK(attached_contents_.find(web_contents) != attached_contents_.end());
 167   attached_contents_.erase(web_contents);
 168 }
 169
 170 }  // namespace content