chrome/browser/ui/gtk/tabs/drag_data.h

   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_GTK_TABS_DRAG_DATA_H_
   6 #define CHROME_BROWSER_UI_GTK_TABS_DRAG_DATA_H_
   7
   8 #include <vector>
   9
  10 #include "base/basictypes.h"
  11
  12 class TabGtk;
  13
  14 namespace content {
  15 class WebContents;
  16 class WebContentsDelegate;
  17 }
  18
  19 struct DraggedTabData {
  20  public:
  21   DraggedTabData();
  22   DraggedTabData(TabGtk* tab,
  23                  content::WebContents* contents,
  24                  content::WebContentsDelegate* original_delegate,
  25                  int source_model_index,
  26                  bool pinned,
  27                  bool mini);
  28   ~DraggedTabData();
  29
  30   // Resets the delegate of |contents_| to |original_delegate_|.
  31   void ResetDelegate();
  32
  33   // The tab being dragged.
  34   TabGtk* tab_;
  35
  36   // The WebContents being dragged.
  37   content::WebContents* contents_;
  38
  39   // The original content::WebContentsDelegate of |contents_|, before it was
  40   // detached from the browser window. We store this so that we can forward
  41   // certain delegate notifications back to it if we can't handle them locally.
  42   content::WebContentsDelegate* original_delegate_;
  43
  44   // This is the index of |contents_| in |source_tabstrip_| when the drag
  45   // began. This is used to restore the previous state if the drag is aborted.
  46   int source_model_index_;
  47
  48   // Is the tab pinned?
  49   bool pinned_;
  50
  51   // Is the tab mini?
  52   bool mini_;
  53 };
  54
  55 // Holds information about all the dragged tabs. It also provides several
  56 // convenience methods.
  57 class DragData {
  58  public:
  59   DragData(std::vector<DraggedTabData> drag_data, int source_tab_index);
  60   ~DragData();
  61
  62   // Returns all the |tab_| fields of the tabs in |drag_data_|.
  63   std::vector<TabGtk*> GetDraggedTabs() const;
  64
  65   // Returns all the |contents_| fields of the tabs in |drag_data_|.
  66   std::vector<content::WebContents*> GetDraggedTabsContents() const;
  67
  68   // Returns the correct add type for the tab in |drag_data_[i]|. See
  69   // TabStripModel::AddTabTypes for available types.
  70   int GetAddTypesForDraggedTabAt(size_t index);
  71
  72   // Calculates the number of mini and non mini tabs from position |from|
  73   // (included) up to position |to| (excluded) within |drag_data_| and
  74   // populates |mini| and |non_mini| accordingly.
  75   void GetNumberOfMiniNonMiniTabs(int from, int to, int* mini,
  76                                   int* non_mini) const;
  77
  78   // Convenience method for getting the number of the dragged tabs.
  79   size_t size() const { return drag_data_.size(); }
  80
  81   // Convenience method for getting the drag data associated with tab at |index|
  82   // within |drag_data_|.
  83   DraggedTabData* get(size_t index) { return &drag_data_[index]; }
  84
  85   int source_tab_index() const { return source_tab_index_; }
  86   int mini_tab_count() const { return mini_tab_count_; }
  87   int non_mini_tab_count() const { return non_mini_tab_count_; }
  88
  89   // Convenience for |source_tab_drag_data()->contents_|.
  90   content::WebContents* GetSourceWebContents();
  91
  92   // Convenience for getting the DraggedTabData corresponding to the tab that
  93   // was under the mouse pointer when the user started dragging.
  94   DraggedTabData* GetSourceTabData();
  95
  96  private:
  97   std::vector<DraggedTabData> drag_data_;
  98
  99   // Index of the source tab in |drag_data_|.
 100   int source_tab_index_;
 101   // Number of non mini tabs within |drag_data_|.
 102   int non_mini_tab_count_;
 103   // Number of mini tabs within |drag_data_|.
 104   int mini_tab_count_;
 105
 106   DISALLOW_COPY_AND_ASSIGN(DragData);
 107 };
 108
 109 #endif  // CHROME_BROWSER_UI_GTK_TABS_DRAG_DATA_H_