content/public/browser/web_contents_view.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 CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_H_
   6 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "base/process/kill.h"
  12 #include "content/common/content_export.h"
  13 #include "ui/gfx/native_widget_types.h"
  14 #include "ui/gfx/rect.h"
  15 #include "ui/gfx/size.h"
  16
  17 namespace content {
  18 struct DropData;
  19
  20 // The WebContentsView is an interface that is implemented by the platform-
  21 // dependent web contents views. The WebContents uses this interface to talk to
  22 // them.
  23 class CONTENT_EXPORT WebContentsView {
  24  public:
  25   virtual ~WebContentsView() {}
  26
  27   // Returns the native widget that contains the contents of the tab.
  28   virtual gfx::NativeView GetNativeView() const = 0;
  29
  30   // Returns the native widget with the main content of the tab (i.e. the main
  31   // render view host, though there may be many popups in the tab as children of
  32   // the container).
  33   virtual gfx::NativeView GetContentNativeView() const = 0;
  34
  35   // Returns the outermost native view. This will be used as the parent for
  36   // dialog boxes.
  37   virtual gfx::NativeWindow GetTopLevelNativeWindow() const = 0;
  38
  39   // Computes the rectangle for the native widget that contains the contents of
  40   // the tab in the screen coordinate system.
  41   virtual void GetContainerBounds(gfx::Rect* out) const = 0;
  42
  43   // Helper function for GetContainerBounds. Most callers just want to know the
  44   // size, and this makes it more clear.
  45   gfx::Size GetContainerSize() const {
  46     gfx::Rect rc;
  47     GetContainerBounds(&rc);
  48     return gfx::Size(rc.width(), rc.height());
  49   }
  50
  51   // Used to notify the view that a tab has crashed.
  52   virtual void OnTabCrashed(base::TerminationStatus status, int error_code) = 0;
  53
  54   // TODO(brettw) this is a hack. It's used in two places at the time of this
  55   // writing: (1) when render view hosts switch, we need to size the replaced
  56   // one to be correct, since it wouldn't have known about sizes that happened
  57   // while it was hidden; (2) in constrained windows.
  58   //
  59   // (1) will be fixed once interstitials are cleaned up. (2) seems like it
  60   // should be cleaned up or done some other way, since this works for normal
  61   // WebContents without the special code.
  62   virtual void SizeContents(const gfx::Size& size) = 0;
  63
  64   // Sets focus to the native widget for this tab.
  65   virtual void Focus() = 0;
  66
  67   // Sets focus to the appropriate element when the WebContents is shown the
  68   // first time.
  69   virtual void SetInitialFocus() = 0;
  70
  71   // Stores the currently focused view.
  72   virtual void StoreFocus() = 0;
  73
  74   // Restores focus to the last focus view. If StoreFocus has not yet been
  75   // invoked, SetInitialFocus is invoked.
  76   virtual void RestoreFocus() = 0;
  77
  78   // Returns the current drop data, if any.
  79   virtual DropData* GetDropData() const = 0;
  80
  81   // Get the bounds of the View, relative to the parent.
  82   virtual gfx::Rect GetViewBounds() const = 0;
  83
  84 #if defined(OS_MACOSX)
  85   // The web contents view assumes that its view will never be overlapped by
  86   // another view (either partially or fully). This allows it to perform
  87   // optimizations. If the view is in a view hierarchy where it might be
  88   // overlapped by another view, notify the view by calling this with |true|.
  89   virtual void SetAllowOverlappingViews(bool overlapping) = 0;
  90
  91   // Returns true if overlapping views are allowed, false otherwise.
  92   virtual bool GetAllowOverlappingViews() const = 0;
  93 #endif
  94 };
  95
  96 }  // namespace content
  97
  98 #endif  // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_H_