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// 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.
#ifndef CHROME_BROWSER_UI_BOOKMARKS_BOOKMARK_TAB_HELPER_H_
#define CHROME_BROWSER_UI_BOOKMARKS_BOOKMARK_TAB_HELPER_H_
#include "chrome/browser/bookmarks/base_bookmark_model_observer.h"
#include "content/public/browser/web_contents_observer.h"
#include "content/public/browser/web_contents_user_data.h"
struct BookmarkNodeData;
class BookmarkTabHelperDelegate;
namespace content {
class WebContents;
}
// Per-tab class to manage bookmarks.
class BookmarkTabHelper
: public BaseBookmarkModelObserver,
public content::WebContentsObserver,
public content::WebContentsUserData<BookmarkTabHelper> {
public:
// Interface for forwarding bookmark drag and drop to extenstions.
class BookmarkDrag {
public:
virtual void OnDragEnter(const BookmarkNodeData& data) = 0;
virtual void OnDragOver(const BookmarkNodeData& data) = 0;
virtual void OnDragLeave(const BookmarkNodeData& data) = 0;
virtual void OnDrop(const BookmarkNodeData& data) = 0;
protected:
virtual ~BookmarkDrag() {}
};
virtual ~BookmarkTabHelper();
void set_delegate(BookmarkTabHelperDelegate* delegate) {
delegate_ = delegate;
}
// It is up to callers to call set_bookmark_drag_delegate(NULL) when
// |bookmark_drag| is deleted since this class does not take ownership of
// |bookmark_drag|.
void set_bookmark_drag_delegate(BookmarkDrag* bookmark_drag) {
bookmark_drag_ = bookmark_drag;
}
BookmarkDrag* bookmark_drag_delegate() { return bookmark_drag_; }
bool is_starred() const { return is_starred_; }
// Returns true if the bookmark bar should be shown detached.
bool ShouldShowBookmarkBar() const;
private:
friend class content::WebContentsUserData<BookmarkTabHelper>;
explicit BookmarkTabHelper(content::WebContents* web_contents);
// Updates the starred state from the BookmarkModel. If the state has changed,
// the delegate is notified.
void UpdateStarredStateForCurrentURL();
// Overridden from BaseBookmarkModelObserver:
virtual void BookmarkModelChanged() OVERRIDE;
virtual void Loaded(BookmarkModel* model, bool ids_reassigned) OVERRIDE;
virtual void BookmarkNodeAdded(BookmarkModel* model,
const BookmarkNode* parent,
int index) OVERRIDE;
virtual void BookmarkNodeRemoved(BookmarkModel* model,
const BookmarkNode* parent,
int old_index,
const BookmarkNode* node) OVERRIDE;
virtual void BookmarkAllNodesRemoved(BookmarkModel* model) OVERRIDE;
virtual void BookmarkNodeChanged(BookmarkModel* model,
const BookmarkNode* node) OVERRIDE;
// Overridden from content::WebContentsObserver:
virtual void DidNavigateMainFrame(
const content::LoadCommittedDetails& details,
const content::FrameNavigateParams& params) OVERRIDE;
// Whether the current URL is starred.
bool is_starred_;
BookmarkModel* bookmark_model_;
// Our delegate, to notify when the url starred changed.
BookmarkTabHelperDelegate* delegate_;
// The BookmarkDrag is used to forward bookmark drag and drop events to
// extensions.
BookmarkDrag* bookmark_drag_;
DISALLOW_COPY_AND_ASSIGN(BookmarkTabHelper);
};
#endif // CHROME_BROWSER_UI_BOOKMARKS_BOOKMARK_TAB_HELPER_H_
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