chrome/browser/ui/toolbar/toolbar_action_view_controller.h

   1 // Copyright 2014 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_TOOLBAR_TOOLBAR_ACTION_VIEW_CONTROLLER_H_
   6 #define CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_ACTION_VIEW_CONTROLLER_H_
   7
   8 #include "base/strings/string16.h"
   9 #include "ui/gfx/image/image.h"
  10
  11 namespace content {
  12 class WebContents;
  13 }
  14
  15 namespace gfx {
  16 class Canvas;
  17 class Rect;
  18 }
  19
  20 class ToolbarActionViewDelegate;
  21
  22 // The basic controller class for an action that is shown on the toolbar -
  23 // an extension action (like browser actions) or a component action (like
  24 // chromecast).
  25 class ToolbarActionViewController {
  26  public:
  27   virtual ~ToolbarActionViewController() {}
  28
  29   // Returns the unique ID of this particular action. For extensions, this is
  30   // the extension id; for component actions, this is the name of the component.
  31   virtual const std::string& GetId() const = 0;
  32
  33   // Sets the view delegate, which can handle most of the front-end logic.
  34   virtual void SetDelegate(ToolbarActionViewDelegate* delegate) = 0;
  35
  36   // Returns the icon to use for the given |web_contents|.
  37   virtual gfx::Image GetIcon(content::WebContents* web_contents) = 0;
  38
  39   // Returns the icon and the badge, if any, for the current tab.
  40   virtual gfx::ImageSkia GetIconWithBadge() = 0;
  41
  42   // Returns the name of the action, which can be separate from the accessible
  43   // name or name for the tooltip.
  44   virtual base::string16 GetActionName() const = 0;
  45
  46   // Returns the accessible name to use for the given |web_contents|.
  47   virtual base::string16 GetAccessibleName(content::WebContents* web_contents)
  48       const = 0;
  49
  50   // Returns the tooltip to use for the given |web_contents|.
  51   virtual base::string16 GetTooltip(content::WebContents* web_contents)
  52       const = 0;
  53
  54   // Returns true if the action should be enabled on the given |web_contents|.
  55   virtual bool IsEnabled(content::WebContents* web_contents) const = 0;
  56
  57   // Returns true if the action has a popup for the given |web_contents|.
  58   virtual bool HasPopup(content::WebContents* web_contents) const = 0;
  59
  60   // Hides the current popup, if one is visible.
  61   virtual void HidePopup() = 0;
  62
  63   // Returns the native view for the popup, if one is active.
  64   virtual gfx::NativeView GetPopupNativeView() = 0;
  65
  66   // Returns true if a menu is currently running for the action.
  67   virtual bool IsMenuRunning() const = 0;
  68
  69   // Returns true if this view can be dragged. This should only be true for
  70   // extensions right now, since they are the only ones the model currently
  71   // supports.
  72   // TODO(devlin): Tweak the model so that it supports generic actions.
  73   virtual bool CanDrag() const = 0;
  74
  75   // Executes the default action (which is typically showing the popup). If
  76   // |by_user| is true, then this was through a direct user action (as oppposed
  77   // to, e.g., an API call).
  78   // Returns true if a popup is shown.
  79   virtual bool ExecuteAction(bool by_user) = 0;
  80
  81   // Paints any extra parts of the image (e.g., a badge).
  82   virtual void PaintExtra(gfx::Canvas* canvas,
  83                           const gfx::Rect& bounds,
  84                           content::WebContents* web_contents) const {
  85   }
  86
  87   // Registers an accelerator. Called when the view is added to the hierarchy.
  88   // Unregistering any commands is the responsibility of the controller.
  89   virtual void RegisterCommand() {
  90   }
  91 };
  92
  93 #endif  // CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_ACTION_VIEW_CONTROLLER_H_