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/security_style_explanations.h"
  12 #include "content/public/browser/web_contents.h"
  13 #include "content/public/common/bindings_policy.h"
  14 #include "content/public/common/security_style.h"
  15 #include "content/public/common/url_constants.h"
  16 #include "ui/gfx/geometry/rect.h"
  17
  18 namespace content {
  19
  20 WebContentsDelegate::WebContentsDelegate() {
  21 }
  22
  23 WebContents* WebContentsDelegate::OpenURLFromTab(WebContents* source,
  24                                                  const OpenURLParams& params) {
  25   return nullptr;
  26 }
  27
  28 bool WebContentsDelegate::IsPopupOrPanel(const WebContents* source) const {
  29   return false;
  30 }
  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(WebContents* source) {
  39   return false;
  40 }
  41
  42 bool WebContentsDelegate::ShouldPreserveAbortedURLs(WebContents* source) {
  43   return false;
  44 }
  45
  46 bool WebContentsDelegate::AddMessageToConsole(WebContents* source,
  47                                               int32 level,
  48                                               const base::string16& message,
  49                                               int32 line_no,
  50                                               const base::string16& source_id) {
  51   return false;
  52 }
  53
  54 void WebContentsDelegate::BeforeUnloadFired(WebContents* web_contents,
  55                                             bool proceed,
  56                                             bool* proceed_to_fire_unload) {
  57   *proceed_to_fire_unload = true;
  58 }
  59
  60 bool WebContentsDelegate::ShouldFocusLocationBarByDefault(WebContents* source) {
  61   return false;
  62 }
  63
  64 bool WebContentsDelegate::ShouldFocusPageAfterCrash() {
  65   return true;
  66 }
  67
  68 bool WebContentsDelegate::ShouldResumeRequestsForCreatedWindow() {
  69   return true;
  70 }
  71
  72 bool WebContentsDelegate::TakeFocus(WebContents* source, bool reverse) {
  73   return false;
  74 }
  75
  76 void WebContentsDelegate::CanDownload(
  77     const GURL& url,
  78     const std::string& request_method,
  79     const base::Callback<void(bool)>& callback) {
  80   callback.Run(true);
  81 }
  82
  83 bool WebContentsDelegate::HandleContextMenu(
  84     const content::ContextMenuParams& params) {
  85   return false;
  86 }
  87
  88 void WebContentsDelegate::ViewSourceForTab(WebContents* source,
  89                                            const GURL& page_url) {
  90   // Fall back implementation based entirely on the view-source scheme.
  91   // It suffers from http://crbug.com/523 and that is why browser overrides
  92   // it with proper implementation.
  93   GURL url = GURL(kViewSourceScheme + std::string(":") + page_url.spec());
  94   OpenURLFromTab(source, OpenURLParams(url, Referrer(),
  95                                        NEW_FOREGROUND_TAB,
  96                                        ui::PAGE_TRANSITION_LINK, false));
  97 }
  98
  99 void WebContentsDelegate::ViewSourceForFrame(WebContents* source,
 100                                              const GURL& frame_url,
 101                                              const PageState& page_state) {
 102   // Same as ViewSourceForTab, but for given subframe.
 103   GURL url = GURL(kViewSourceScheme + std::string(":") + frame_url.spec());
 104   OpenURLFromTab(source, OpenURLParams(url, Referrer(),
 105                                        NEW_FOREGROUND_TAB,
 106                                        ui::PAGE_TRANSITION_LINK, false));
 107 }
 108
 109 bool WebContentsDelegate::PreHandleKeyboardEvent(
 110     WebContents* source,
 111     const NativeWebKeyboardEvent& event,
 112     bool* is_keyboard_shortcut) {
 113   return false;
 114 }
 115
 116 bool WebContentsDelegate::PreHandleGestureEvent(
 117     WebContents* source,
 118     const blink::WebGestureEvent& event) {
 119   return false;
 120 }
 121
 122 bool WebContentsDelegate::CanDragEnter(
 123     WebContents* source,
 124     const DropData& data,
 125     blink::WebDragOperationsMask operations_allowed) {
 126   return true;
 127 }
 128
 129 bool WebContentsDelegate::OnGoToEntryOffset(int offset) {
 130   return true;
 131 }
 132
 133 bool WebContentsDelegate::ShouldCreateWebContents(
 134     WebContents* web_contents,
 135     int route_id,
 136     int main_frame_route_id,
 137     WindowContainerType window_container_type,
 138     const std::string& frame_name,
 139     const GURL& target_url,
 140     const std::string& partition_id,
 141     SessionStorageNamespace* session_storage_namespace) {
 142   return true;
 143 }
 144
 145 JavaScriptDialogManager* WebContentsDelegate::GetJavaScriptDialogManager(
 146     WebContents* source) {
 147   return nullptr;
 148 }
 149
 150 bool WebContentsDelegate::EmbedsFullscreenWidget() const {
 151   return false;
 152 }
 153
 154 bool WebContentsDelegate::IsFullscreenForTabOrPending(
 155     const WebContents* web_contents) const {
 156   return false;
 157 }
 158
 159 blink::WebDisplayMode WebContentsDelegate::GetDisplayMode(
 160     const WebContents* web_contents) const {
 161   return blink::WebDisplayModeBrowser;
 162 }
 163
 164 content::ColorChooser* WebContentsDelegate::OpenColorChooser(
 165     WebContents* web_contents,
 166     SkColor color,
 167     const std::vector<ColorSuggestion>& suggestions) {
 168   return nullptr;
 169 }
 170
 171 void WebContentsDelegate::RequestMediaAccessPermission(
 172     WebContents* web_contents,
 173     const MediaStreamRequest& request,
 174     const MediaResponseCallback& callback) {
 175   LOG(ERROR) << "WebContentsDelegate::RequestMediaAccessPermission: "
 176              << "Not supported.";
 177   callback.Run(MediaStreamDevices(),
 178                MEDIA_DEVICE_NOT_SUPPORTED,
 179                scoped_ptr<MediaStreamUI>());
 180 }
 181
 182 bool WebContentsDelegate::CheckMediaAccessPermission(
 183     WebContents* web_contents,
 184     const GURL& security_origin,
 185     MediaStreamType type) {
 186   LOG(ERROR) << "WebContentsDelegate::CheckMediaAccessPermission: "
 187              << "Not supported.";
 188   return false;
 189 }
 190
 191 bool WebContentsDelegate::RequestPpapiBrokerPermission(
 192     WebContents* web_contents,
 193     const GURL& url,
 194     const base::FilePath& plugin_path,
 195     const base::Callback<void(bool)>& callback) {
 196   return false;
 197 }
 198
 199 WebContentsDelegate::~WebContentsDelegate() {
 200   while (!attached_contents_.empty()) {
 201     WebContents* web_contents = *attached_contents_.begin();
 202     web_contents->SetDelegate(nullptr);
 203   }
 204   DCHECK(attached_contents_.empty());
 205 }
 206
 207 void WebContentsDelegate::Attach(WebContents* web_contents) {
 208   DCHECK(attached_contents_.find(web_contents) == attached_contents_.end());
 209   attached_contents_.insert(web_contents);
 210 }
 211
 212 void WebContentsDelegate::Detach(WebContents* web_contents) {
 213   DCHECK(attached_contents_.find(web_contents) != attached_contents_.end());
 214   attached_contents_.erase(web_contents);
 215 }
 216
 217 gfx::Size WebContentsDelegate::GetSizeForNewRenderView(
 218    WebContents* web_contents) const {
 219   return gfx::Size();
 220 }
 221
 222 bool WebContentsDelegate::IsNeverVisible(WebContents* web_contents) {
 223   return false;
 224 }
 225
 226 bool WebContentsDelegate::SaveFrame(const GURL& url, const Referrer& referrer) {
 227   return false;
 228 }
 229
 230 SecurityStyle WebContentsDelegate::GetSecurityStyle(
 231     WebContents* web_contents,
 232     SecurityStyleExplanations* security_style_explanations) {
 233   return content::SECURITY_STYLE_UNKNOWN;
 234 }
 235
 236 }  // namespace content