Fixing crash Report - Magic Signature: views::View::ConvertPointToScreen

ui/views/bubble/bubble_delegate.cc

 // 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.
 
 #include "ui/views/bubble/bubble_delegate.h"
 
 #include "ui/gfx/animation/slide_animation.h"
 #include "ui/gfx/color_utils.h"
 #include "ui/gfx/rect.h"
 #include "ui/native_theme/native_theme.h"
 #include "ui/views/bubble/bubble_frame_view.h"
+#include "ui/views/focus/view_storage.h"
 #include "ui/views/widget/widget.h"
 #include "ui/views/widget/widget_observer.h"
 
 #if defined(OS_WIN)
 #include "ui/base/win/shell.h"
 #endif
 
 // The duration of the fade animation in milliseconds.
 static const int kHideFadeDurationMS = 200;
 
@@ skipping 99 matching lines @@
   return border_widget;
 }
 
 }  // namespace
 
 #endif
 
 BubbleDelegateView::BubbleDelegateView()
     : close_on_esc_(true),
       close_on_deactivate_(true),
-      anchor_view_(NULL),
+      has_anchor_view_(false),
       anchor_widget_(NULL),
       move_with_anchor_(false),
       arrow_(BubbleBorder::TOP_LEFT),
       shadow_(BubbleBorder::SMALL_SHADOW),
       color_explicitly_set_(false),
       margins_(kDefaultMargin, kDefaultMargin, kDefaultMargin, kDefaultMargin),
       original_opacity_(255),
       border_widget_(NULL),
       use_focusless_(false),
       accept_events_(true),
       border_accepts_events_(true),
       adjust_if_offscreen_(true),
       parent_window_(NULL) {
   AddAccelerator(ui::Accelerator(ui::VKEY_ESCAPE, ui::EF_NONE));
   UpdateColorsFromTheme(GetNativeTheme());
 }
 
 BubbleDelegateView::BubbleDelegateView(
     View* anchor_view,
     BubbleBorder::Arrow arrow)
     : close_on_esc_(true),
       close_on_deactivate_(true),
-      anchor_view_(anchor_view),
+      has_anchor_view_(false),
       anchor_widget_(NULL),
       move_with_anchor_(false),
       arrow_(arrow),
       shadow_(BubbleBorder::SMALL_SHADOW),
       color_explicitly_set_(false),
       margins_(kDefaultMargin, kDefaultMargin, kDefaultMargin, kDefaultMargin),
       original_opacity_(255),
       border_widget_(NULL),
       use_focusless_(false),
       accept_events_(true),
       border_accepts_events_(true),
       adjust_if_offscreen_(true),
       parent_window_(NULL) {
+  SetAnchorView(anchor_view);
   AddAccelerator(ui::Accelerator(ui::VKEY_ESCAPE, ui::EF_NONE));
   UpdateColorsFromTheme(GetNativeTheme());
 }
 
 BubbleDelegateView::~BubbleDelegateView() {
-  if (anchor_widget() != NULL)
-    anchor_widget()->RemoveObserver(this);
-  anchor_widget_ = NULL;
-  anchor_view_ = NULL;
+  DetachFromAnchor();
 }
 
 // static
 Widget* BubbleDelegateView::CreateBubble(BubbleDelegateView* bubble_delegate) {
   bubble_delegate->Init();
   // Determine the anchor widget from the anchor view at bubble creation time.
-  bubble_delegate->anchor_widget_ = bubble_delegate->anchor_view() ?
-      bubble_delegate->anchor_view()->GetWidget() : NULL;
+  bubble_delegate->anchor_widget_ = bubble_delegate->GetAnchorView() ?
+      bubble_delegate->GetAnchorView()->GetWidget() : NULL;
   if (bubble_delegate->anchor_widget())
     bubble_delegate->anchor_widget()->AddObserver(bubble_delegate);
 
   Widget* bubble_widget = CreateBubbleWidget(bubble_delegate);
 
 #if defined(OS_WIN)
 #if defined(USE_AURA)
   // If glass is enabled, the bubble is allowed to extend outside the bounds of
   // the parent frame and let DWM handle compositing.  If not, then we don't
   // want to allow the bubble to extend the frame because it will be clipped.
@@ skipping 29 matching lines @@
 NonClientFrameView* BubbleDelegateView::CreateNonClientFrameView(
     Widget* widget) {
   BubbleFrameView* frame = new BubbleFrameView(margins());
   const BubbleBorder::Arrow adjusted_arrow = base::i18n::IsRTL() ?
       BubbleBorder::horizontal_mirror(arrow()) : arrow();
   frame->SetBubbleBorder(new BubbleBorder(adjusted_arrow, shadow(), color()));
   return frame;
 }
 
 void BubbleDelegateView::OnWidgetDestroying(Widget* widget) {
-  if (anchor_widget() == widget) {
-    anchor_widget_->RemoveObserver(this);
-    anchor_view_ = NULL;
-    anchor_widget_ = NULL;
-  }
+  if (anchor_widget() == widget)
+    DetachFromAnchor();
 }
 
 void BubbleDelegateView::OnWidgetVisibilityChanging(Widget* widget,
                                                     bool visible) {
 #if defined(OS_WIN)
   // On Windows we need to handle this before the bubble is visible or hidden.
   // Please see the comment on the OnWidgetVisibilityChanging function. On
   // other platforms it is fine to handle it after the bubble is shown/hidden.
   HandleVisibilityChanged(widget, visible);
 #endif
@@ skipping 11 matching lines @@
   if (close_on_deactivate() && widget == GetWidget() && !active)
     GetWidget()->Close();
 }
 
 void BubbleDelegateView::OnWidgetBoundsChanged(Widget* widget,
                                                const gfx::Rect& new_bounds) {
   if (move_with_anchor() && anchor_widget() == widget)
     SizeToContents();
 }
 
+View* BubbleDelegateView::GetAnchorView() const {
+  if (!has_anchor_view_)
+    return NULL;
+  return ViewStorage::GetInstance()->RetrieveView(anchor_view_storage_id_);
+}
+
+void BubbleDelegateView::SetAnchorView(View* anchor_view) {
+  if (!anchor_view) {
+    if (has_anchor_view_) {
+      has_anchor_view_ = false;
+      ViewStorage::GetInstance()->RemoveView(anchor_view_storage_id_);
+    }
+    return;
+  }
+
+  if (!has_anchor_view_) {
+    anchor_view_storage_id_ = ViewStorage::GetInstance()->CreateStorageID();
+    has_anchor_view_ = true;
+  }
+
+  ViewStorage::GetInstance()->StoreView(anchor_view_storage_id_, anchor_view);
+}
+
 gfx::Rect BubbleDelegateView::GetAnchorRect() {
-  if (!anchor_view())
+  if (!GetAnchorView()) {
+    // If the anchor view was going away, we have to return the last known good

[msw, 2013/09/27 21:21:53]

nit: remove this comment and the curly braces.

[Mr4D (OOO till 08-26), 2013/09/27 22:52:21]

Done.

+    // position.
     return anchor_rect_;
-  gfx::Rect anchor_bounds = anchor_view()->GetBoundsInScreen();
+  }
+  gfx::Rect anchor_bounds = GetAnchorView()->GetBoundsInScreen();

[msw, 2013/09/27 21:21:53]

nit: remove |anchor_bounds|, just use |anchor_rect_|.

[Mr4D (OOO till 08-26), 2013/09/27 22:52:21]

Done.

   anchor_bounds.Inset(anchor_view_insets_);
+  // Remember the last found anchor rect.
+  anchor_rect_ = anchor_bounds;
   return anchor_bounds;
 }
 
 void BubbleDelegateView::StartFade(bool fade_in) {
 #if defined(USE_AURA)
   // Use AURA's window layer animation instead of fading. This ensures that
   // hosts which rely on the layer animation callbacks to close the window
   // work correctly.
   if (fade_in)
     GetWidget()->Show();
@@ skipping 145 matching lines @@
     if (border_widget_)
       border_widget_->ShowInactive();
     if (anchor_widget() && anchor_widget()->GetTopLevelWidget())
       anchor_widget()->GetTopLevelWidget()->DisableInactiveRendering();
   } else {
     if (border_widget_)
       border_widget_->Hide();
   }
 }
 
+void BubbleDelegateView::DetachFromAnchor() {
+  if (anchor_widget_)
+    anchor_widget_->RemoveObserver(this);
+  SetAnchorView(NULL);
+  anchor_widget_ = NULL;
+}
+
 }  // namespace views