Add unit tests for DesktopMediaPickerViews.

chrome/browser/ui/views/desktop_media_picker_views.h

+// Copyright 2014 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_VIEWS_DESKTOP_MEDIA_PICKER_VIEWS_H_
+#define CHROME_BROWSER_UI_VIEWS_DESKTOP_MEDIA_PICKER_VIEWS_H_
+
+#include "chrome/browser/media/desktop_media_list_observer.h"
+#include "chrome/browser/media/desktop_media_picker.h"
+#include "ui/views/window/dialog_delegate.h"
+
+namespace views {
+class ImageView;
+class Label;
+}  // namespace views
+
+class DesktopMediaPickerDialogView;
+class DesktopMediaPickerViews;
+class DesktopMediaSourceView;
+
+// View that shows list of desktop media sources available from

[msw, 2014/07/15 03:29:56]

nit: "a list"

+// DesktopMediaList.
+class DesktopMediaListView : public views::View,
+                             public DesktopMediaListObserver {
+ public:
+  DesktopMediaListView(DesktopMediaPickerDialogView* parent,
+                       scoped_ptr<DesktopMediaList> media_list);
+  virtual ~DesktopMediaListView();
+
+  void StartUpdating(content::DesktopMediaID::Id dialog_window_id);
+
+  // Called by DesktopMediaSourceView when selection has changed.
+  void OnSelectionChanged();
+
+  // Called by DesktopMediaSourceView when a source has been double-clicked.
+  void OnDoubleClick();
+
+  // Returns currently selected source.
+  DesktopMediaSourceView* GetSelection();
+
+  // views::View overrides.
+  virtual gfx::Size GetPreferredSize() const OVERRIDE;
+  virtual void Layout() OVERRIDE;
+  virtual bool OnKeyPressed(const ui::KeyEvent& event) OVERRIDE;
+
+ private:
+  // DesktopMediaList::Observer interface
+  virtual void OnSourceAdded(int index) OVERRIDE;
+  virtual void OnSourceRemoved(int index) OVERRIDE;
+  virtual void OnSourceMoved(int old_index, int new_index) OVERRIDE;
+  virtual void OnSourceNameChanged(int index) OVERRIDE;
+  virtual void OnSourceThumbnailChanged(int index) OVERRIDE;
+
+  DesktopMediaPickerDialogView* parent_;
+  scoped_ptr<DesktopMediaList> media_list_;
+
+  DISALLOW_COPY_AND_ASSIGN(DesktopMediaListView);
+};
+
+// View used for each item in DesktopMediaListView. Shows a single desktop media
+// source as a thumbnail with the title under it.
+class DesktopMediaSourceView : public views::View {
+ public:
+  DesktopMediaSourceView(DesktopMediaListView* parent,
+                         content::DesktopMediaID source_id);
+  virtual ~DesktopMediaSourceView();
+
+  // Updates thumbnail and title from |source|.
+  void SetName(const base::string16& name);
+  void SetThumbnail(const gfx::ImageSkia& thumbnail);
+
+  // Id for the source shown by this View.
+  const content::DesktopMediaID& source_id() const { return source_id_; }
+
+  // Returns true if the source is selected.
+  bool is_selected() const { return selected_; }
+
+  // views::View interface.
+  virtual const char* GetClassName() const OVERRIDE;
+  virtual void Layout() OVERRIDE;
+  virtual views::View* GetSelectedViewForGroup(int group) OVERRIDE;
+  virtual bool IsGroupFocusTraversable() const OVERRIDE;
+  virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
+  virtual void OnFocus() OVERRIDE;
+  virtual void OnBlur() OVERRIDE;
+  virtual bool OnMousePressed(const ui::MouseEvent& event) OVERRIDE;
+  virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE;
+
+ private:
+  // Updates selection state of the element. If |selected| is true then also
+  // calls SetSelected(false) for the source view that was selected before that
+  // (if any).
+  void SetSelected(bool selected);
+
+  DesktopMediaListView* parent_;
+  content::DesktopMediaID source_id_;
+
+  views::ImageView* image_view_;
+  views::Label* label_;
+
+  bool selected_;
+
+  DISALLOW_COPY_AND_ASSIGN(DesktopMediaSourceView);
+};
+
+// Dialog view used for DesktopMediaPickerViews.
+class DesktopMediaPickerDialogView : public views::DialogDelegateView {
+ public:
+  DesktopMediaPickerDialogView(content::WebContents* parent_web_contents,
+                               gfx::NativeWindow context,
+                               gfx::NativeWindow parent_window,
+                               DesktopMediaPickerViews* parent,
+                               const base::string16& app_name,
+                               const base::string16& target_name,
+                               scoped_ptr<DesktopMediaList> media_list);
+  virtual ~DesktopMediaPickerDialogView();
+
+  // Called by parent (DesktopMediaPickerViews) when it's destroyed.
+  void DetachParent();
+
+  // Called by DesktopMediaListView.
+  void OnSelectionChanged();
+  void OnDoubleClick();
+
+  // views::View overrides.
+  virtual gfx::Size GetPreferredSize() const OVERRIDE;
+  virtual void Layout() OVERRIDE;
+
+  // views::DialogDelegateView overrides.
+  virtual ui::ModalType GetModalType() const OVERRIDE;
+  virtual base::string16 GetWindowTitle() const OVERRIDE;
+  virtual bool IsDialogButtonEnabled(ui::DialogButton button) const OVERRIDE;
+  virtual base::string16 GetDialogButtonLabel(
+      ui::DialogButton button) const OVERRIDE;
+  virtual bool Accept() OVERRIDE;
+  virtual void DeleteDelegate() OVERRIDE;
+
+  void OnMediaListRowsChanged();
+
+  DesktopMediaSourceView* GetMediaSourceViewForTesting(int index) const;
+
+ private:
+  DesktopMediaPickerViews* parent_;
+  base::string16 app_name_;
+
+  views::Label* label_;
+  views::ScrollView* scroll_view_;
+  DesktopMediaListView* list_view_;
+
+  DISALLOW_COPY_AND_ASSIGN(DesktopMediaPickerDialogView);
+};
+
+// Implementation of DesktopMediaPicker for Views.
+class DesktopMediaPickerViews : public DesktopMediaPicker {
+ public:
+  DesktopMediaPickerViews();
+  virtual ~DesktopMediaPickerViews();
+
+  void NotifyDialogResult(content::DesktopMediaID source);
+
+  // DesktopMediaPicker overrides.
+  virtual void Show(content::WebContents* web_contents,
+                    gfx::NativeWindow context,
+                    gfx::NativeWindow parent,
+                    const base::string16& app_name,
+                    const base::string16& target_name,
+                    scoped_ptr<DesktopMediaList> media_list,
+                    const DoneCallback& done_callback) OVERRIDE;
+
+  DesktopMediaPickerDialogView* GetDialogViewForTesting() const {
+    return dialog_;
+  }
+
+ private:
+  DoneCallback callback_;
+
+  // The |dialog_| is owned by the corresponding views::Widget instance.
+  // When DesktopMediaPickerViews is destroyed the |dialog_| is destroyed
+  // asynchronously by closing the widget.
+  DesktopMediaPickerDialogView* dialog_;
+
+  DISALLOW_COPY_AND_ASSIGN(DesktopMediaPickerViews);
+};
+
+#endif  // CHROME_BROWSER_UI_VIEWS_DESKTOP_MEDIA_PICKER_VIEWS_H_