Delete the GTK+ port of Chrome.

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

Index: chrome/browser/ui/gtk/tabs/tab_strip_gtk.h
diff --git a/chrome/browser/ui/gtk/tabs/tab_strip_gtk.h b/chrome/browser/ui/gtk/tabs/tab_strip_gtk.h
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index eb3f2551ee49d47a2e273d975f3bf16cc65d5307..0000000000000000000000000000000000000000
--- a/chrome/browser/ui/gtk/tabs/tab_strip_gtk.h
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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_GTK_TABS_TAB_STRIP_GTK_H_
-#define CHROME_BROWSER_UI_GTK_TABS_TAB_STRIP_GTK_H_
-
-#include <gtk/gtk.h>
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "base/memory/weak_ptr.h"
-#include "base/message_loop/message_loop.h"
-#include "chrome/browser/ui/gtk/tabs/tab_gtk.h"
-#include "chrome/browser/ui/gtk/tabstrip_origin_provider.h"
-#include "chrome/browser/ui/gtk/view_id_util.h"
-#include "chrome/browser/ui/tabs/hover_tab_selector.h"
-#include "chrome/browser/ui/tabs/tab_strip_model.h"
-#include "content/public/browser/notification_observer.h"
-#include "content/public/browser/notification_registrar.h"
-#include "ui/base/gtk/gtk_signal.h"
-#include "ui/base/gtk/owned_widget_gtk.h"
-#include "ui/gfx/rect.h"
-
-class BrowserWindowGtk;
-class CustomDrawButton;
-class DraggedTabControllerGtk;
-class GtkThemeService;
-
-namespace gfx {
-class Image;
-}
-
-class TabStripGtk : public TabStripModelObserver,
-                    public TabGtk::TabDelegate,
-                    public base::MessageLoopForUI::Observer,
-                    public content::NotificationObserver,
-                    public TabstripOriginProvider,
-                    public ViewIDUtil::Delegate {
- public:
-  class TabAnimation;
-
-  TabStripGtk(TabStripModel* model, BrowserWindowGtk* window);
-  virtual ~TabStripGtk();
-
-  // Initialize and load the TabStrip into a container.
-  // TODO(tc): Pass in theme provider so we can properly theme the tabs.
-  void Init();
-
-  void Show();
-  void Hide();
-
-  TabStripModel* model() const { return model_; }
-
-  BrowserWindowGtk* window() const { return window_; }
-
-  GtkWidget* widget() const { return tabstrip_.get(); }
-
-  // Returns true if there is an active drag session.
-  bool IsDragSessionActive() const { return drag_controller_.get() != NULL; }
-
-  // Returns true if a tab is being dragged into this tabstrip.
-  bool IsActiveDropTarget() const;
-
-  // Sets the bounds of the tabs.
-  void Layout();
-
-  // Queues a draw for the tabstrip widget.
-  void SchedulePaint();
-
-  // Sets the bounds of the tabstrip.
-  void SetBounds(const gfx::Rect& bounds);
-
-  // Returns the bounds of the tabstrip.
-  const gfx::Rect& bounds() const { return bounds_; }
-
-  // Updates loading animations for the TabStrip.
-  void UpdateLoadingAnimations();
-
-  // Return true if this tab strip is compatible with the provided tab strip.
-  // Compatible tab strips can transfer tabs during drag and drop.
-  bool IsCompatibleWith(TabStripGtk* other);
-
-  // Returns true if Tabs in this TabStrip are currently changing size or
-  // position.
-  bool IsAnimating() const;
-
-  // Destroys the active drag controller.
-  void DestroyDragController();
-
-  // Removes |dragged_tab| from this tabstrip, and deletes it.
-  void DestroyDraggedTab(TabGtk* dragged_tab);
-
-  // Retrieve the ideal bounds for the Tab at the specified index.
-  gfx::Rect GetIdealBounds(int index);
-
-  // Sets the vertical offset that each tab will use to offset against the
-  // background image. Passed in from the titlebar and based on the size of the
-  // alignment that sits above the tabstrip.
-  void SetVerticalOffset(int offset);
-
-  // TabstripOriginProvider implementation -------------------------------------
-  virtual gfx::Point GetTabStripOriginForWidget(GtkWidget* widget) OVERRIDE;
-
-  // ViewIDUtil::Delegate implementation ---------------------------------------
-  virtual GtkWidget* GetWidgetForViewID(ViewID id) OVERRIDE;
-
- protected:
-  // TabStripModelObserver implementation:
-  virtual void TabInsertedAt(content::WebContents* contents,
-                             int index,
-                             bool foreground) OVERRIDE;
-  virtual void TabDetachedAt(content::WebContents* contents,
-                             int index) OVERRIDE;
-  virtual void TabMoved(content::WebContents* contents,
-                        int from_index,
-                        int to_index) OVERRIDE;
-  virtual void ActiveTabChanged(content::WebContents* old_contents,
-                                content::WebContents* new_contents,
-                                int index,
-                                int reason) OVERRIDE;
-  virtual void TabSelectionChanged(
-      TabStripModel* tab_strip_model,
-      const ui::ListSelectionModel& old_model) OVERRIDE;
-  virtual void TabChangedAt(content::WebContents* contents,
-                            int index,
-                            TabChangeType change_type) OVERRIDE;
-  virtual void TabReplacedAt(TabStripModel* tab_strip_model,
-                             content::WebContents* old_contents,
-                             content::WebContents* new_contents,
-                             int index) OVERRIDE;
-  virtual void TabMiniStateChanged(content::WebContents* contents,
-                                   int index) OVERRIDE;
-  virtual void TabBlockedStateChanged(content::WebContents* contents,
-                                      int index) OVERRIDE;
-
-  // TabGtk::TabDelegate implementation:
-  virtual bool IsTabActive(const TabGtk* tab) const OVERRIDE;
-  virtual bool IsTabSelected(const TabGtk* tab) const OVERRIDE;
-  virtual bool IsTabPinned(const TabGtk* tab) const OVERRIDE;
-  virtual bool IsTabDetached(const TabGtk* tab) const OVERRIDE;
-  virtual void ActivateTab(TabGtk* tab) OVERRIDE;
-  virtual void ToggleTabSelection(TabGtk* tab) OVERRIDE;
-  virtual void ExtendTabSelection(TabGtk* tab) OVERRIDE;
-  virtual void CloseTab(TabGtk* tab) OVERRIDE;
-  virtual bool IsCommandEnabledForTab(
-      TabStripModel::ContextMenuCommand command_id,
-      const TabGtk* tab) const OVERRIDE;
-  virtual void ExecuteCommandForTab(
-      TabStripModel::ContextMenuCommand command_id, TabGtk* tab) OVERRIDE;
-  virtual void StartHighlightTabsForCommand(
-      TabStripModel::ContextMenuCommand command_id, TabGtk* tab) OVERRIDE;
-  virtual void StopHighlightTabsForCommand(
-      TabStripModel::ContextMenuCommand command_id, TabGtk* tab) OVERRIDE;
-  virtual void StopAllHighlighting() OVERRIDE;
-  virtual void MaybeStartDrag(TabGtk* tab, const gfx::Point& point) OVERRIDE;
-  virtual void ContinueDrag(GdkDragContext* context) OVERRIDE;
-  virtual bool EndDrag(bool canceled) OVERRIDE;
-  virtual bool HasAvailableDragActions() const OVERRIDE;
-  virtual GtkThemeService* GetThemeProvider() OVERRIDE;
-  virtual TabStripMenuController* GetTabStripMenuControllerForTab(
-      TabGtk* tab) OVERRIDE;
-
-  // MessageLoop::Observer implementation:
-  virtual void WillProcessEvent(GdkEvent* event) OVERRIDE;
-  virtual void DidProcessEvent(GdkEvent* event) OVERRIDE;
-
-  // Overridden from content::NotificationObserver:
-  virtual void Observe(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details) OVERRIDE;
-
-  // Horizontal gap between mini-tabs and normal tabs.
-  static const int mini_to_non_mini_gap_;
-
- private:
-  friend class BrowserWindowGtk;
-  friend class DraggedTabControllerGtk;
-  friend class InsertTabAnimation;
-  friend class MiniMoveAnimation;
-  friend class MiniTabAnimation;
-  friend class MoveTabAnimation;
-  friend class RemoveTabAnimation;
-  friend class ResizeLayoutAnimation;
-  friend class TabAnimation;
-
-  struct TabData {
-    TabGtk* tab;
-    gfx::Rect ideal_bounds;
-  };
-
-  // Used during a drop session of a url. Tracks the position of the drop as
-  // well as a window used to highlight where the drop occurs.
-  class DropInfo {
-   public:
-    DropInfo(int index, bool drop_before, bool point_down);
-    virtual ~DropInfo();
-
-    // TODO(jhawkins): Factor out this code into a TransparentContainer class.
-
-    // expose-event handler that redraws the drop indicator.
-    CHROMEGTK_CALLBACK_1(DropInfo, gboolean, OnExposeEvent, GdkEventExpose*);
-
-    // Sets the color map of the container window to allow the window to be
-    // transparent.
-    void SetContainerColorMap();
-
-    // Sets full transparency for the container window.  This is used if
-    // compositing is available for the screen.
-    void SetContainerTransparency();
-
-    // Sets the shape mask for the container window to emulate a transparent
-    // container window.  This is used if compositing is not available for the
-    // screen.
-    void SetContainerShapeMask();
-
-    // Creates the container widget.
-    void CreateContainer();
-
-    // Destroys the container widget.
-    void DestroyContainer();
-
-    // Index of the tab to drop on. If drop_before is true, the drop should
-    // occur between the tab at drop_index - 1 and drop_index.
-    // WARNING: if drop_before is true it is possible this will == tab_count,
-    // which indicates the drop should create a new tab at the end of the tabs.
-    int drop_index;
-    bool drop_before;
-
-    // Direction the arrow should point in. If true, the arrow is displayed
-    // above the tab and points down. If false, the arrow is displayed beneath
-    // the tab and points up.
-    bool point_down;
-
-    // Transparent container window used to render the drop indicator over the
-    // tabstrip and toolbar.
-    GtkWidget* container;
-
-    // The drop indicator image.
-    gfx::Image* drop_arrow;
-
-   private:
-    DISALLOW_COPY_AND_ASSIGN(DropInfo);
-  };
-
-  // Map signal handler that sets initial z-ordering. The widgets need to be
-  // realized before we can set the stacking. We use the "map" signal since the
-  // "realize" signal is called before the child widgets get realized.
-  CHROMEGTK_CALLBACK_0(TabStripGtk, void, OnMap);
-
-  // expose-event handler that redraws the tabstrip
-  CHROMEGTK_CALLBACK_1(TabStripGtk, gboolean, OnExpose, GdkEventExpose*);
-
-  // size-allocate handler that gets the new bounds of the tabstrip.
-  CHROMEGTK_CALLBACK_1(TabStripGtk, void, OnSizeAllocate, GtkAllocation*);
-
-  // drag-motion handler that is signaled when the user performs a drag in the
-  // tabstrip bounds.
-  CHROMEGTK_CALLBACK_4(TabStripGtk, gboolean, OnDragMotion, GdkDragContext*,
-                       gint, gint, guint);
-
-  // drag-drop handler that is notified when the user finishes a drag.
-  CHROMEGTK_CALLBACK_4(TabStripGtk, gboolean, OnDragDrop, GdkDragContext*,
-                       gint, gint, guint);
-
-  // drag-leave handler that is signaled when the mouse leaves the tabstrip
-  // during a drag.
-  CHROMEGTK_CALLBACK_2(TabStripGtk, gboolean, OnDragLeave, GdkDragContext*,
-                       guint);
-
-  // drag-data-received handler that receives the data associated with the drag.
-  CHROMEGTK_CALLBACK_6(TabStripGtk, gboolean, OnDragDataReceived,
-                       GdkDragContext*, gint, gint, GtkSelectionData*,
-                       guint, guint);
-
-  // Handles the clicked signal from the new tab button.
-  CHROMEGTK_CALLBACK_0(TabStripGtk, void, OnNewTabClicked);
-
-  // Sets the bounds of the tab and moves the tab widget to those bounds.
-  void SetTabBounds(TabGtk* tab, const gfx::Rect& bounds);
-
-  // Returns true if |rects| are all areas that match up with tab favicons.
-  // |rects| must be sorted from left to right.  |tabs_to_paint| are the tab
-  // positions that match the rects.
-  bool CanPaintOnlyFavicons(const GdkRectangle* rects,
-                            int num_rects,
-                            std::vector<int>* tabs_to_paint);
-
-  // Paints the tab favicon areas for tabs in |tabs_to_paint|.
-  void PaintOnlyFavicons(GdkEventExpose* event,
-                         const std::vector<int>& tabs_to_paint);
-
-  // Initializes the new tab button.
-  CustomDrawButton* MakeNewTabButton();
-
-  // Sets the theme specific background on the new tab button.
-  void SetNewTabButtonBackground();
-
-  // Gets the number of Tabs in the collection.
-  int GetTabCount() const;
-
-  // Returns the number of mini-tabs.
-  int GetMiniTabCount() const;
-
-  // Retrieves the Tab at the specified index. Take care in using this, you may
-  // need to use GetTabAtAdjustForAnimation.
-  TabGtk* GetTabAt(int index) const;
-
-  // Returns the tab at the specified index. If a remove animation is on going
-  // and the index is >= the index of the tab being removed, the index is
-  // incremented. While a remove operation is on going the indices of the model
-  // do not line up with the indices of the view. This method adjusts the index
-  // accordingly.
-  //
-  // Use this instead of GetTabAt if the index comes from the model.
-  TabGtk* GetTabAtAdjustForAnimation(int index) const;
-
-  // Returns the exact (unrounded) current width of each tab.
-  void GetCurrentTabWidths(double* unselected_width,
-                           double* selected_width) const;
-
-  // Returns the exact (unrounded) desired width of each tab, based on the
-  // desired strip width and number of tabs.  If
-  // |width_of_tabs_for_mouse_close_| is nonnegative we use that value in
-  // calculating the desired strip width; otherwise we use the current width.
-  // |mini_tab_count| gives the number of mini-tabs, and |tab_count| the
-  // number of mini and non-mini-tabs.
-  void GetDesiredTabWidths(int tab_count,
-                           int mini_tab_count,
-                           double* unselected_width,
-                           double* selected_width) const;
-
-  // Returns the horizontal offset before the tab at |tab_index|.
-  int GetTabHOffset(int tab_index);
-
-  // Returns the x-coordinate tabs start from.
-  int tab_start_x() const;
-
-  // Perform an animated resize-relayout of the TabStrip immediately.
-  void ResizeLayoutTabs();
-
-  // Returns whether or not the cursor is currently in the "tab strip zone"
-  // which is defined as the region above the TabStrip and a bit below it.
-  bool IsCursorInTabStripZone() const;
-
-  // Reset the Z-ordering of tabs.
-  void ReStack();
-
-  // Ensure that the message loop observer used for event spying is added and
-  // removed appropriately so we can tell when to resize layout the tab strip.
-  void AddMessageLoopObserver();
-  void RemoveMessageLoopObserver();
-
-  // Calculates the available width for tabs, assuming a Tab is to be closed.
-  int GetAvailableWidthForTabs(TabGtk* last_tab) const;
-
-  // Finds the index of the WebContents corresponding to |tab| in our
-  // associated TabStripModel, or -1 if there is none (e.g. the specified |tab|
-  // is being animated closed).
-  int GetIndexOfTab(const TabGtk* tab) const;
-
-  // Cleans up the tab from the TabStrip at the specified |index|.
-  void RemoveTabAt(int index);
-
-  // Called from the message loop observer when a mouse movement has occurred
-  // anywhere over our containing window.
-  void HandleGlobalMouseMoveEvent();
-
-  // Generates the ideal bounds of the TabStrip when all Tabs have finished
-  // animating to their desired position/bounds. This is used by the standard
-  // Layout method and other callers like the DraggedTabController that need
-  // stable representations of Tab positions.
-  void GenerateIdealBounds();
-
-  // Lays out the New Tab button, assuming the right edge of the last Tab on
-  // the TabStrip at |last_tab_right|.  |unselected_width| is the width of
-  // unselected tabs at the moment this function is called.  The value changes
-  // during animations, so we can't use current_unselected_width_.
-  void LayoutNewTabButton(double last_tab_right, double unselected_width);
-
-  // -- Link Drag & Drop ------------------------------------------------------
-
-  // Returns the bounds to render the drop at, in screen coordinates. Sets
-  // |is_beneath| to indicate whether the arrow is beneath the tab, or above
-  // it.
-  gfx::Rect GetDropBounds(int drop_index, bool drop_before, bool* is_beneath);
-
-  // Updates the location of the drop based on the event.
-  void UpdateDropIndex(GdkDragContext* context, gint x, gint y);
-
-  // Sets the location of the drop, repainting as necessary.
-  void SetDropIndex(int index, bool drop_before);
-
-  // Determines whether the data is acceptable by the tabstrip and opens a new
-  // tab with the data as URL if it is.  Returns true if the drop was
-  // successful.
-  bool CompleteDrop(const guchar* data, bool is_plain_text);
-
-  // Returns the image to use for indicating a drop on a tab. If is_down is
-  // true, this returns an arrow pointing down.
-  static gfx::Image* GetDropArrowImage(bool is_down);
-
-  // -- Animations -------------------------------------------------------------
-
-  // Stops the current animation.
-  void StopAnimation();
-
-  // A generic Layout method for various classes of TabStrip animations,
-  // including Insert, Remove and Resize Layout cases.
-  void AnimationLayout(double unselected_width);
-
-  // Starts various types of TabStrip animations.
-  void StartInsertTabAnimation(int index);
-  void StartRemoveTabAnimation(int index, content::WebContents* contents);
-  void StartMoveTabAnimation(int from_index, int to_index);
-  void StartMiniTabAnimation(int index);
-  void StartMiniMoveTabAnimation(int from_index,
-                                 int to_index,
-                                 const gfx::Rect& start_bounds);
-  void StartResizeLayoutAnimation();
-
-  // Notifies the TabStrip that the specified TabAnimation has completed.
-  // Optionally a full Layout will be performed, specified by |layout|.
-  void FinishAnimation(TabAnimation* animation, bool layout);
-
-  // The Tabs we contain, and their last generated "good" bounds.
-  std::vector<TabData> tab_data_;
-
-  // The current widths of various types of tabs.  We save these so that, as
-  // users close tabs while we're holding them at the same size, we can lay out
-  // tabs exactly and eliminate the "pixel jitter" we'd get from just leaving
-  // them all at their existing, rounded widths.
-  double current_unselected_width_;
-  double current_selected_width_;
-
-  // If this value is nonnegative, it is used in GetDesiredTabWidths() to
-  // calculate how much space in the tab strip to use for tabs.  Most of the
-  // time this will be -1, but while we're handling closing a tab via the mouse,
-  // we'll set this to the edge of the last tab before closing, so that if we
-  // are closing the last tab and need to resize immediately, we'll resize only
-  // back to this width, thus once again placing the last tab under the mouse
-  // cursor.
-  int available_width_for_tabs_;
-
-  // True if a resize layout animation should be run a short delay after the
-  // mouse exits the TabStrip.
-  bool needs_resize_layout_;
-
-  // The GtkFixed widget.
-  ui::OwnedWidgetGtk tabstrip_;
-
-  // The bounds of the tabstrip.
-  gfx::Rect bounds_;
-
-  // The amount to offset tab backgrounds when we are using an autogenerated
-  // tab background image.
-  int tab_vertical_offset_;
-
-  // Our model.
-  TabStripModel* model_;
-
-  // The BrowserWindowGtk containing this tab strip.
-  BrowserWindowGtk* window_;
-
-  // Theme resources.
-  GtkThemeService* theme_service_;
-
-  // The currently running animation.
-  scoped_ptr<TabAnimation> active_animation_;
-
-  // The New Tab button.
-  scoped_ptr<CustomDrawButton> newtab_button_;
-
-  // The bounds of the bitmap surface used to paint the New Tab button.
-  gfx::Rect newtab_surface_bounds_;
-
-  // Valid for the lifetime of a drag over us.
-  scoped_ptr<DropInfo> drop_info_;
-
-  // The controller for a drag initiated from a Tab. Valid for the lifetime of
-  // the drag session.
-  scoped_ptr<DraggedTabControllerGtk> drag_controller_;
-
-  // True if the tabstrip has already been added as a MessageLoop observer.
-  bool added_as_message_loop_observer_;
-
-  // Helper for performing tab selection as a result of dragging over a tab.
-  HoverTabSelector hover_tab_selector_;
-
-  content::NotificationRegistrar registrar_;
-
-  // A factory that is used to construct a delayed callback to the
-  // ResizeLayoutTabsNow method.
-  base::WeakPtrFactory<TabStripGtk> weak_factory_;
-
-  // A different factory for calls to Layout().
-  base::WeakPtrFactory<TabStripGtk> layout_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(TabStripGtk);
-};
-
-#endif  // CHROME_BROWSER_UI_GTK_TABS_TAB_STRIP_GTK_H_