Implement Desktop Media Picker (Mac version) for Desktop Capture API

chrome/browser/ui/cocoa/media_picker/desktop_media_picker_controller.h

+// Copyright (c) 2013 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_COCOA_MEDIA_PICKER_DESKTOP_MEDIA_PICKER_CONTROLLER_H_
+#define CHROME_BROWSER_UI_COCOA_MEDIA_PICKER_DESKTOP_MEDIA_PICKER_CONTROLLER_H_
+
+#import <Cocoa/Cocoa.h>
+#import <Quartz/Quartz.h>
+
+#include "base/callback.h"
+#import "base/mac/scoped_nsobject.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/strings/string16.h"
+#include "chrome/browser/media/desktop_media_picker.h"
+#include "chrome/browser/media/desktop_media_picker_model.h"
+#import "chrome/browser/ui/cocoa/media_picker/desktop_media_picker_bridge.h"
+
+// A controller for the Desktop Media Picker. Presents the user with a list of
+// media sources for screen-capturing, and reports the result.
+@interface DesktopMediaPickerController
+    : NSWindowController<NSWindowDelegate, DesktopMediaPickerObserver> {
+ @private
+  // The dialog's label with instructions to the user.
+  IBOutlet NSTextField* label_;
+
+  // The image browser view to present sources to the user (thumbnails and
+  // names).
+  IBOutlet IKImageBrowserView* sourceBrowser_;
+
+  // The button used to confirm the selection.
+  IBOutlet NSButton* okButton_;
+
+  // The button used to cancel and close the dialog.
+  IBOutlet NSButton* cancelButton_;
+
+  // Provides source information (including thumbnails) to fill up |items_| and
+  // to render in |sourceBrowser_|.
+  scoped_ptr<DesktopMediaPickerModel> model_;
+
+  // To be called with the user selection.
+  DesktopMediaPicker::DoneCallback doneCallback_;
+
+  // App name invoking the service - used to format the dialog's title and
+  // label.
+  string16 appName_;
+
+  // Array of |DesktopMediaPickerItem| used as data for |sourceBrowser_|.
+  base::scoped_nsobject<NSMutableArray> items_;
+
+  // C++ bridge to use as an observer to |model_|, that forwards obj-c
+  // notifications to this object.
+  scoped_ptr<DesktopMediaPickerBridge> bridge_;
+
+  // Used to create |DesktopMediaPickerItem|s with unique IDs.
+  int lastImageUID_;
+}
+
+// Designated initializer.
+// To show the dialog, use |NSWindowController|'s |showWindow:|.
+// |callback| will be called to report the user's selection.
+// |appName| will be used to format the dialog's title and the label.
+- (id)initWithModel:(scoped_ptr<DesktopMediaPickerModel>)model
+           callback:(const DesktopMediaPicker::DoneCallback&)callback
+            appName:(const string16&)appName;
+
+- (IBAction)okPressed:(id)sender;
+- (IBAction)cancelPressed:(id)sender;
+
+@end
+
+#endif  // CHROME_BROWSER_UI_COCOA_MEDIA_PICKER_DESKTOP_MEDIA_PICKER_CONTROLLER_H_