chrome/browser/ui/gtk/omnibox/omnibox_popup_view_gtk.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_OMNIBOX_OMNIBOX_POPUP_VIEW_GTK_H_
   6 #define CHROME_BROWSER_UI_GTK_OMNIBOX_OMNIBOX_POPUP_VIEW_GTK_H_
   7
   8 #include <gtk/gtk.h>
   9
  10 #include <map>
  11 #include <string>
  12
  13 #include "base/basictypes.h"
  14 #include "base/compiler_specific.h"
  15 #include "base/memory/scoped_ptr.h"
  16 #include "chrome/browser/autocomplete/autocomplete_match.h"
  17 #include "chrome/browser/ui/omnibox/omnibox_popup_view.h"
  18 #include "content/public/browser/notification_observer.h"
  19 #include "content/public/browser/notification_registrar.h"
  20 #include "ui/base/gtk/gtk_signal.h"
  21 #include "ui/base/window_open_disposition.h"
  22 #include "ui/gfx/font.h"
  23
  24 class AutocompleteResult;
  25 class GtkThemeService;
  26 class OmniboxEditModel;
  27 class OmniboxPopupModel;
  28 class OmniboxView;
  29 class SkBitmap;
  30
  31 namespace gfx {
  32 class Image;
  33 }
  34
  35 class OmniboxPopupViewGtk : public OmniboxPopupView,
  36                             public content::NotificationObserver {
  37  public:
  38   OmniboxPopupViewGtk(const gfx::Font& font,
  39                       OmniboxView* omnibox_view,
  40                       OmniboxEditModel* edit_model,
  41                       GtkWidget* location_bar);
  42   virtual ~OmniboxPopupViewGtk();
  43
  44   // Initializes the view.
  45   virtual void Init();
  46
  47   // Overridden from OmniboxPopupView:
  48   virtual bool IsOpen() const OVERRIDE;
  49   virtual void InvalidateLine(size_t line) OVERRIDE;
  50   virtual void UpdatePopupAppearance() OVERRIDE;
  51   virtual gfx::Rect GetTargetBounds() OVERRIDE;
  52   virtual void PaintUpdatesNow() OVERRIDE;
  53   virtual void OnDragCanceled() OVERRIDE;
  54
  55   // Overridden from content::NotificationObserver:
  56   virtual void Observe(int type,
  57                        const content::NotificationSource& source,
  58                        const content::NotificationDetails& details) OVERRIDE;
  59
  60  protected:
  61   // Convert a y-coordinate to the closest line / result.
  62   size_t LineFromY(int y) const;
  63
  64   // Return a Rect for the space for a result line.  This excludes the border,
  65   // but includes the padding.  This is the area that is colored for a
  66   // selection.
  67   gfx::Rect GetRectForLine(size_t line, int width) const;
  68
  69   // Returns the number of hidden matches at the top of the popup. This is
  70   // non-zero when a verbatim match like search-what-you-typed is present but
  71   // should not be shown.
  72   size_t GetHiddenMatchCount() const;
  73
  74   // Returns the current autocomplete result.
  75   virtual const AutocompleteResult& GetResult() const;
  76
  77  private:
  78   // Be friendly for unit tests.
  79   friend class OmniboxPopupViewGtkTest;
  80
  81   static void SetupLayoutForMatch(
  82       PangoLayout* layout,
  83       const base::string16& text,
  84       const AutocompleteMatch::ACMatchClassifications& classifications,
  85       const GdkColor* base_color,
  86       const GdkColor* dim_color,
  87       const GdkColor* url_color,
  88       const std::string& prefix_text);
  89
  90   virtual void Show(size_t num_results);
  91   virtual void Hide();
  92
  93   // Restack the popup window directly above the browser's toplevel window.
  94   void StackWindow();
  95
  96   // Accept a line of the results, for example, when the user clicks a line.
  97   void AcceptLine(size_t line, WindowOpenDisposition disposition);
  98
  99   // Returns the appropriate icon to display beside |match|.
 100   gfx::Image IconForMatch(const AutocompleteMatch& match,
 101                           bool selected,
 102                           bool is_selected_keyword);
 103
 104   // Returns the |index|th element of match, unless we're selected and showing
 105   // the associated keyword match.
 106   void GetVisibleMatchForInput(size_t index,
 107                                const AutocompleteMatch** match,
 108                                bool* is_selected_keyword);
 109
 110   CHROMEGTK_CALLBACK_1(OmniboxPopupViewGtk, gboolean, HandleMotion,
 111                        GdkEventMotion*);
 112
 113   CHROMEGTK_CALLBACK_1(OmniboxPopupViewGtk, gboolean, HandleButtonPress,
 114                        GdkEventButton*);
 115
 116   CHROMEGTK_CALLBACK_1(OmniboxPopupViewGtk, gboolean, HandleButtonRelease,
 117                        GdkEventButton*);
 118
 119   CHROMEGTK_CALLBACK_1(OmniboxPopupViewGtk, gboolean, HandleExpose,
 120                        GdkEventExpose*);
 121
 122   scoped_ptr<OmniboxPopupModel> model_;
 123   OmniboxView* omnibox_view_;
 124   GtkWidget* location_bar_;
 125
 126   // Our popup window, which is the only widget used, and we paint it on our
 127   // own.  This widget shouldn't be exposed outside of this class.
 128   GtkWidget* window_;
 129   // The pango layout object created from the window, cached across exposes.
 130   PangoLayout* layout_;
 131
 132   GtkThemeService* theme_service_;
 133   content::NotificationRegistrar registrar_;
 134
 135   // Font used for suggestions after being derived from the constructor's
 136   // |font|.
 137   gfx::Font font_;
 138
 139   // A list of colors which we should use for drawing the popup. These change
 140   // between gtk and normal mode.
 141   GdkColor border_color_;
 142   GdkColor background_color_;
 143   GdkColor selected_background_color_;
 144   GdkColor hovered_background_color_;
 145   GdkColor content_text_color_;
 146   GdkColor selected_content_text_color_;
 147   GdkColor content_dim_text_color_;
 148   GdkColor selected_content_dim_text_color_;
 149   GdkColor url_text_color_;
 150   GdkColor url_selected_text_color_;
 151
 152   // If the user cancels a dragging action (i.e. by pressing ESC), we don't have
 153   // a convenient way to release mouse capture. Instead we use this flag to
 154   // simply ignore all remaining drag events, and the eventual mouse release
 155   // event. Since OnDragCanceled() can be called when we're not dragging, this
 156   // flag is reset to false on a mouse pressed event, to make sure we don't
 157   // erroneously ignore the next drag.
 158   bool ignore_mouse_drag_;
 159
 160   // Whether our popup is currently open / shown, or closed / hidden.
 161   bool opened_;
 162
 163   DISALLOW_COPY_AND_ASSIGN(OmniboxPopupViewGtk);
 164 };
 165
 166 #endif  // CHROME_BROWSER_UI_GTK_OMNIBOX_OMNIBOX_POPUP_VIEW_GTK_H_