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 #ifndef CHROME_BROWSER_UI_BOOKMARKS_BOOKMARK_TAB_HELPER_H_ 6 #define CHROME_BROWSER_UI_BOOKMARKS_BOOKMARK_TAB_HELPER_H_ 7 8 #include "chrome/browser/bookmarks/base_bookmark_model_observer.h" 9 #include "content/public/browser/web_contents_observer.h" 10 #include "content/public/browser/web_contents_user_data.h" 11 12 struct BookmarkNodeData; 13 class BookmarkTabHelperDelegate; 14 15 namespace content { 16 class WebContents; 17 } 18 19 // Per-tab class to manage bookmarks. 20 class BookmarkTabHelper 21 : public BaseBookmarkModelObserver, 22 public content::WebContentsObserver, 23 public content::WebContentsUserData<BookmarkTabHelper> { 24 public: 25 // Interface for forwarding bookmark drag and drop to extenstions. 26 class BookmarkDrag { 27 public: 28 virtual void OnDragEnter(const BookmarkNodeData& data) = 0; 29 virtual void OnDragOver(const BookmarkNodeData& data) = 0; 30 virtual void OnDragLeave(const BookmarkNodeData& data) = 0; 31 virtual void OnDrop(const BookmarkNodeData& data) = 0; 32 33 protected: 34 virtual ~BookmarkDrag() {} 35 }; 36 37 virtual ~BookmarkTabHelper(); 38 39 void set_delegate(BookmarkTabHelperDelegate* delegate) { 40 delegate_ = delegate; 41 } 42 43 // It is up to callers to call set_bookmark_drag_delegate(NULL) when 44 // |bookmark_drag| is deleted since this class does not take ownership of 45 // |bookmark_drag|. 46 void set_bookmark_drag_delegate(BookmarkDrag* bookmark_drag) { 47 bookmark_drag_ = bookmark_drag; 48 } 49 BookmarkDrag* bookmark_drag_delegate() { return bookmark_drag_; } 50 51 bool is_starred() const { return is_starred_; } 52 53 // Returns true if the bookmark bar should be shown detached. 54 bool ShouldShowBookmarkBar() const; 55 56 private: 57 friend class content::WebContentsUserData<BookmarkTabHelper>; 58 59 explicit BookmarkTabHelper(content::WebContents* web_contents); 60 61 // Updates the starred state from the BookmarkModel. If the state has changed, 62 // the delegate is notified. 63 void UpdateStarredStateForCurrentURL(); 64 65 // Overridden from BaseBookmarkModelObserver: 66 virtual void BookmarkModelChanged() OVERRIDE; 67 virtual void Loaded(BookmarkModel* model, bool ids_reassigned) OVERRIDE; 68 virtual void BookmarkNodeAdded(BookmarkModel* model, 69 const BookmarkNode* parent, 70 int index) OVERRIDE; 71 virtual void BookmarkNodeRemoved(BookmarkModel* model, 72 const BookmarkNode* parent, 73 int old_index, 74 const BookmarkNode* node) OVERRIDE; 75 virtual void BookmarkAllNodesRemoved(BookmarkModel* model) OVERRIDE; 76 77 virtual void BookmarkNodeChanged(BookmarkModel* model, 78 const BookmarkNode* node) OVERRIDE; 79 80 // Overridden from content::WebContentsObserver: 81 virtual void DidNavigateMainFrame( 82 const content::LoadCommittedDetails& details, 83 const content::FrameNavigateParams& params) OVERRIDE; 84 85 // Whether the current URL is starred. 86 bool is_starred_; 87 88 BookmarkModel* bookmark_model_; 89 90 // Our delegate, to notify when the url starred changed. 91 BookmarkTabHelperDelegate* delegate_; 92 93 // The BookmarkDrag is used to forward bookmark drag and drop events to 94 // extensions. 95 BookmarkDrag* bookmark_drag_; 96 97 DISALLOW_COPY_AND_ASSIGN(BookmarkTabHelper); 98 }; 99 100 #endif // CHROME_BROWSER_UI_BOOKMARKS_BOOKMARK_TAB_HELPER_H_ 101