root/content/public/browser/web_contents_delegate.cc

DEFINITIONS

1. OpenURLFromTab
2. IsPopupOrPanel
3. CanOverscrollContent
4. GetRootWindowResizerRect
5. ShouldSuppressDialogs
6. AddMessageToConsole
7. BeforeUnloadFired
8. ShouldFocusLocationBarByDefault
9. ShouldFocusPageAfterCrash
10. TakeFocus
11. GetExtraRenderViewHeight
12. CanDownload
13. HandleContextMenu
14. ViewSourceForTab
15. ViewSourceForFrame
16. PreHandleKeyboardEvent
17. PreHandleGestureEvent
18. CanDragEnter
19. OnGoToEntryOffset
20. ShouldCreateWebContents
21. GetJavaScriptDialogManager
22. EmbedsFullscreenWidget
23. IsFullscreenForTabOrPending
24. OpenColorChooser
25. RequestMediaAccessPermission
26. RequestPpapiBrokerPermission
27. Attach
28. Detach
29. GetSizeForNewRenderView

// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "content/public/browser/web_contents_delegate.h"

#include "base/compiler_specific.h"
#include "base/logging.h"
#include "base/memory/singleton.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/web_contents.h"
#include "content/public/common/url_constants.h"
#include "content/public/common/bindings_policy.h"
#include "ui/gfx/rect.h"

namespace content {

WebContentsDelegate::WebContentsDelegate() {
}

WebContents* WebContentsDelegate::OpenURLFromTab(WebContents* source,
                                                 const OpenURLParams& params) {
  return NULL;
}

bool WebContentsDelegate::IsPopupOrPanel(const WebContents* source) const {
  return false;
}

bool WebContentsDelegate::CanOverscrollContent() const { return false; }

gfx::Rect WebContentsDelegate::GetRootWindowResizerRect() const {
  return gfx::Rect();
}

bool WebContentsDelegate::ShouldSuppressDialogs() {
  return false;
}

bool WebContentsDelegate::AddMessageToConsole(WebContents* source,
                                              int32 level,
                                              const base::string16& message,
                                              int32 line_no,
                                              const base::string16& source_id) {
  return false;
}

void WebContentsDelegate::BeforeUnloadFired(WebContents* web_contents,
                                            bool proceed,
                                            bool* proceed_to_fire_unload) {
  *proceed_to_fire_unload = true;
}

bool WebContentsDelegate::ShouldFocusLocationBarByDefault(WebContents* source) {
  return false;
}

bool WebContentsDelegate::ShouldFocusPageAfterCrash() {
  return true;
}

bool WebContentsDelegate::TakeFocus(WebContents* source, bool reverse) {
  return false;
}

int WebContentsDelegate::GetExtraRenderViewHeight() const {
  return 0;
}

void WebContentsDelegate::CanDownload(
    RenderViewHost* render_view_host,
    int request_id,
    const std::string& request_method,
    const base::Callback<void(bool)>& callback) {
  callback.Run(true);
}

bool WebContentsDelegate::HandleContextMenu(
    const content::ContextMenuParams& params) {
  return false;
}

void WebContentsDelegate::ViewSourceForTab(WebContents* source,
                                           const GURL& page_url) {
  // Fall back implementation based entirely on the view-source scheme.
  // It suffers from http://crbug.com/523 and that is why browser overrides
  // it with proper implementation.
  GURL url = GURL(kViewSourceScheme + std::string(":") + page_url.spec());
  OpenURLFromTab(source, OpenURLParams(url, Referrer(),
                                       NEW_FOREGROUND_TAB,
                                       PAGE_TRANSITION_LINK, false));
}

void WebContentsDelegate::ViewSourceForFrame(WebContents* source,
                                             const GURL& frame_url,
                                             const PageState& page_state) {
  // Same as ViewSourceForTab, but for given subframe.
  GURL url = GURL(kViewSourceScheme + std::string(":") + frame_url.spec());
  OpenURLFromTab(source, OpenURLParams(url, Referrer(),
                                       NEW_FOREGROUND_TAB,
                                       PAGE_TRANSITION_LINK, false));
}

bool WebContentsDelegate::PreHandleKeyboardEvent(
    WebContents* source,
    const NativeWebKeyboardEvent& event,
    bool* is_keyboard_shortcut) {
  return false;
}

bool WebContentsDelegate::PreHandleGestureEvent(
    WebContents* source,
    const blink::WebGestureEvent& event) {
  return false;
}

bool WebContentsDelegate::CanDragEnter(
    WebContents* source,
    const DropData& data,
    blink::WebDragOperationsMask operations_allowed) {
  return true;
}

bool WebContentsDelegate::OnGoToEntryOffset(int offset) {
  return true;
}

bool WebContentsDelegate::ShouldCreateWebContents(
    WebContents* web_contents,
    int route_id,
    WindowContainerType window_container_type,
    const base::string16& frame_name,
    const GURL& target_url,
    const std::string& partition_id,
    SessionStorageNamespace* session_storage_namespace) {
  return true;
}

JavaScriptDialogManager* WebContentsDelegate::GetJavaScriptDialogManager() {
  return NULL;
}

bool WebContentsDelegate::EmbedsFullscreenWidget() const {
  return false;
}

bool WebContentsDelegate::IsFullscreenForTabOrPending(
    const WebContents* web_contents) const {
  return false;
}

content::ColorChooser* WebContentsDelegate::OpenColorChooser(
    WebContents* web_contents,
    SkColor color,
    const std::vector<ColorSuggestion>& suggestions) {
  return NULL;
}

void WebContentsDelegate::RequestMediaAccessPermission(
    WebContents* web_contents,
    const MediaStreamRequest& request,
    const MediaResponseCallback& callback) {
  callback.Run(MediaStreamDevices(),
               MEDIA_DEVICE_INVALID_STATE,
               scoped_ptr<MediaStreamUI>());
}

bool WebContentsDelegate::RequestPpapiBrokerPermission(
    WebContents* web_contents,
    const GURL& url,
    const base::FilePath& plugin_path,
    const base::Callback<void(bool)>& callback) {
  return false;
}

WebContentsDelegate::~WebContentsDelegate() {
  while (!attached_contents_.empty()) {
    WebContents* web_contents = *attached_contents_.begin();
    web_contents->SetDelegate(NULL);
  }
  DCHECK(attached_contents_.empty());
}

void WebContentsDelegate::Attach(WebContents* web_contents) {
  DCHECK(attached_contents_.find(web_contents) == attached_contents_.end());
  attached_contents_.insert(web_contents);
}

void WebContentsDelegate::Detach(WebContents* web_contents) {
  DCHECK(attached_contents_.find(web_contents) != attached_contents_.end());
  attached_contents_.erase(web_contents);
}

gfx::Size WebContentsDelegate::GetSizeForNewRenderView(
    const WebContents* web_contents) const {
  return gfx::Size();
}

}  // namespace content