Cocoa: Implement media gallery dialog

This is the cocoa version of the media galleries permission dialog. The dialog is implemented as an NSAlert displayed as a constrained window. The gallery checkboxes are added inside a accessory view.

The views and GTK versions are here:
http://codereview.chromium.org/10828166/
https://chromiumcodereview.appspot.com/10826129

Screenshots: http://i.imgur.com/fedm0.png

BUG=134929
TBR=mihaip@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10834242

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@152128 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/extensions/api/media_galleries/media_galleries_api.cc

@@ -12,6 +12,7 @@
 #include "base/platform_file.h"
 #include "base/values.h"
 #include "chrome/browser/media_gallery/media_file_system_registry.h"
+#include "chrome/browser/media_gallery/media_galleries_dialog_controller.h"
 #include "chrome/browser/ui/tab_contents/tab_contents.h"
 #include "chrome/common/extensions/api/experimental_media_galleries.h"
 #include "content/public/browser/child_process_security_policy.h"
@@ -23,10 +24,6 @@
 #include "base/sys_string_conversions.h"
 #endif
 
-#if !defined(OS_MACOSX)
-#include "chrome/browser/media_gallery/media_galleries_dialog_controller.h"
-#endif
-
 using content::WebContents;
 
 namespace extensions {
@@ -112,16 +109,11 @@ void MediaGalleriesGetMediaFileSystemsFunction::ShowDialog() {
     return;
   }
 
-#if !defined(OS_MACOSX)
   // Controller will delete itself.
   new chrome::MediaGalleriesDialogController(
       tab_contents, *GetExtension(),
       base::Bind(&MediaGalleriesGetMediaFileSystemsFunction::ReturnGalleries,
                  this));
-#else
-  // TODO(estade): implement dialog on Views and Cocoa.
-  ReturnGalleries();
-#endif
 }
 
 // MediaGalleriesAssembleMediaFileFunction -------------------------------------

chrome/browser/media_gallery/media_galleries_dialog_controller.cc

@@ -44,13 +44,13 @@ MediaGalleriesDialogController::~MediaGalleriesDialogController() {
     select_folder_dialog_->ListenerDestroyed();
 }
 
-string16 MediaGalleriesDialogController::GetHeader() {
+string16 MediaGalleriesDialogController::GetHeader() const {
   std::string extension_name(extension_ ? extension_->name() : "");
   return l10n_util::GetStringFUTF16(IDS_MEDIA_GALLERIES_DIALOG_HEADER,
                                     UTF8ToUTF16(extension_name));
 }
 
-string16 MediaGalleriesDialogController::GetSubtext() {
+string16 MediaGalleriesDialogController::GetSubtext() const {
   if (extension_ && extension_->HasAPIPermission(
           extensions::APIPermission::kMediaGalleriesRead)) {
     return l10n_util::GetStringFUTF16(IDS_MEDIA_GALLERIES_DIALOG_READ_SUBTEXT,
@@ -60,6 +60,15 @@ string16 MediaGalleriesDialogController::GetSubtext() {
   return string16();
 }
 
+bool MediaGalleriesDialogController::HasPermittedGalleries() const {
+  for (KnownGalleryPermissions::const_iterator iter = permissions().begin();
+       iter != permissions().end(); iter++) {
+    if (iter->second.allowed)
+      return true;
+  }
+  return false;
+}
+
 void MediaGalleriesDialogController::OnAddFolderClicked() {
   FilePath user_data_dir;
   PathService::Get(chrome::DIR_USER_DATA, &user_data_dir);
@@ -75,7 +84,7 @@ void MediaGalleriesDialogController::OnAddFolderClicked() {
       NULL);
 }
 
-void MediaGalleriesDialogController::GalleryToggled(
+void MediaGalleriesDialogController::DidToggleGallery(
     const MediaGalleryPrefInfo* gallery,
     bool enabled) {
   // Check known galleries.

chrome/browser/media_gallery/media_galleries_dialog_controller.h

@@ -66,10 +66,11 @@ class MediaGalleriesDialogController : public ui::SelectFileDialog::Listener {
                                  const base::Callback<void(void)>& on_finish);
 
   // Called by the view.
-  string16 GetHeader();
-  string16 GetSubtext();
+  string16 GetHeader() const;
+  string16 GetSubtext() const;
+  bool HasPermittedGalleries() const;
   void OnAddFolderClicked();
-  virtual void GalleryToggled(const MediaGalleryPrefInfo* pref_info,
+  virtual void DidToggleGallery(const MediaGalleryPrefInfo* pref_info,
                                 bool enabled);
   virtual void DialogFinished(bool accepted);
 

chrome/browser/ui/cocoa/extensions/media_galleries_dialog_cocoa.h

+// 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.
+
+#ifndef CHROME_BROWSER_UI_COCOA_EXTENSIONS_MEDIA_GALLERIES_DIALOG_COCOA_H_
+#define CHROME_BROWSER_UI_COCOA_EXTENSIONS_MEDIA_GALLERIES_DIALOG_COCOA_H_
+
+#import <Cocoa/Cocoa.h>
+
+#include "chrome/browser/media_gallery/media_galleries_dialog_controller.h"
+#import "chrome/browser/ui/cocoa/constrained_window_mac.h"
+
+@class MediaGalleriesCocoaController;
+
+namespace chrome {
+
+// This class displays an alert that can be used to grant permission for
+// extensions to access a gallery (media folders).
+class MediaGalleriesDialogCocoa :
+    public ConstrainedWindowMacDelegateSystemSheet,
+    public MediaGalleriesDialog {
+ public:
+  MediaGalleriesDialogCocoa(
+      MediaGalleriesDialogController* controller,
+      MediaGalleriesCocoaController* delegate);
+  virtual ~MediaGalleriesDialogCocoa();
+
+  // Called when the user clicks the Add Gallery button.
+  void OnAddFolderClicked();
+  // Called when the user toggles a gallery checkbox.
+  void OnCheckboxToggled(NSButton* checkbox);
+  // Called when the alert closes.
+  void SheetDidEnd(NSInteger result);
+
+  // MediaGalleriesDialog implementation:
+  virtual void UpdateGallery(const MediaGalleryPrefInfo* gallery,
+                             bool permitted) OVERRIDE;
+
+  // ConstrainedWindowMacDelegateSystemSheet implementation.
+  virtual void DeleteDelegate() OVERRIDE;
+
+ private:
+  void UpdateGalleryCheckbox(NSButton* checkbox,
+                             const MediaGalleryPrefInfo* gallery,
+                             bool permitted);
+  void UpdateCheckboxContainerFrame();
+
+  MediaGalleriesDialogController* controller_;  // weak
+  ConstrainedWindow* window_;  // weak
+
+  // True if the user has pressed accept.
+  bool accepted_;
+
+  // List of checkboxes ordered from bottom to top.
+  scoped_nsobject<NSMutableArray> checkboxes_;
+
+  // Container view for checkboxes.
+  scoped_nsobject<NSView> checkbox_container_;
+
+  // The alert that the dialog is being displayed as.
+  scoped_nsobject<NSAlert> alert_;
+
+  // An Objective-C class to route callbacks from Cocoa code.
+  scoped_nsobject<MediaGalleriesCocoaController> cocoa_controller_;
+
+  DISALLOW_COPY_AND_ASSIGN(MediaGalleriesDialogCocoa);
+};
+
+}  // namespace chrome
+
+#endif  // CHROME_BROWSER_UI_COCOA_EXTENSIONS_MEDIA_GALLERIES_DIALOG_COCOA_H_

chrome/browser/ui/cocoa/extensions/media_galleries_dialog_cocoa.mm

+// 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 "chrome/browser/ui/cocoa/extensions/media_galleries_dialog_cocoa.h"
+
+#include "base/sys_string_conversions.h"
+#include "grit/generated_resources.h"
+#include "ui/base/l10n/l10n_util.h"
+
+const CGFloat kCheckboxMargin = 5;
+const CGFloat kCheckboxMaxWidth = 350;
+
+@interface MediaGalleriesCocoaController : NSObject {
+ @private
+  chrome::MediaGalleriesDialogCocoa* dialog_;
+}
+
+@property(nonatomic, assign) chrome::MediaGalleriesDialogCocoa* dialog;
+
+@end
+
+@implementation MediaGalleriesCocoaController
+
+@synthesize dialog = dialog_;
+
+- (void)onAddFolderClicked:(id)sender {
+  DCHECK(dialog_);
+  dialog_->OnAddFolderClicked();
+}
+
+- (void)onCheckboxToggled:(id)sender {
+  DCHECK(dialog_);
+  dialog_->OnCheckboxToggled(sender);
+}
+
+- (void)sheetDidEnd:(NSWindow*)parent
+         returnCode:(NSInteger)returnCode
+            context:(void*)context {
+  DCHECK(dialog_);
+  dialog_->SheetDidEnd(returnCode);
+}
+
+@end
+
+namespace chrome {
+
+MediaGalleriesDialogCocoa::MediaGalleriesDialogCocoa(
+    MediaGalleriesDialogController* controller,
+    MediaGalleriesCocoaController* cocoa_controller)
+    : ConstrainedWindowMacDelegateSystemSheet(
+          cocoa_controller, @selector(sheetDidEnd:returnCode:context:)),
+      controller_(controller),
+      window_(NULL),
+      accepted_(false),
+      cocoa_controller_([cocoa_controller retain]) {
+  [cocoa_controller_ setDialog:this];
+
+  alert_.reset([[NSAlert alloc] init]);
+  [alert_ setMessageText:base::SysUTF16ToNSString(controller_->GetHeader())];
+  [alert_ setInformativeText:SysUTF16ToNSString(controller_->GetSubtext())];
+  [alert_ addButtonWithTitle:l10n_util::GetNSString(
+      IDS_MEDIA_GALLERIES_DIALOG_CONFIRM)];
+  [alert_ addButtonWithTitle:l10n_util::GetNSString(
+      IDS_MEDIA_GALLERIES_DIALOG_CANCEL)];
+  [alert_ addButtonWithTitle:l10n_util::GetNSString(
+      IDS_MEDIA_GALLERIES_DIALOG_ADD_GALLERY)];
+
+  // Override the add button click handler to prevent the alert from closing.
+  NSButton* add_button = [[alert_ buttons] objectAtIndex:2];
+  [add_button setTarget:cocoa_controller_];
+  [add_button setAction:@selector(onAddFolderClicked:)];
+
+  // Add gallery permission checkboxes inside an accessory view.
+  checkbox_container_.reset([[NSView alloc] initWithFrame:NSZeroRect]);
+  checkboxes_.reset([[NSMutableArray alloc] init]);
+  const MediaGalleriesDialogController::KnownGalleryPermissions& permissions =
+      controller_->permissions();
+  for (MediaGalleriesDialogController::KnownGalleryPermissions::
+       const_reverse_iterator iter = permissions.rbegin();
+       iter != permissions.rend(); iter++) {
+    const MediaGalleriesDialogController::GalleryPermission& permission =
+        iter->second;
+    UpdateGalleryCheckbox(nil, &permission.pref_info, permission.allowed);
+  }
+  UpdateCheckboxContainerFrame();
+  [alert_ setAccessoryView:checkbox_container_];
+
+  // As a safeguard against the user skipping reading over the dialog and just
+  // confirming, the button will be unavailable for dialogs without any checks
+  // until the user toggles something.
+  [[[alert_ buttons] objectAtIndex:0] setEnabled:
+      controller_->HasPermittedGalleries()];
+
+  set_sheet(alert_);
+  window_ = new ConstrainedWindowMac(controller->tab_contents(), this);
+}
+
+MediaGalleriesDialogCocoa::~MediaGalleriesDialogCocoa() {
+}
+
+void MediaGalleriesDialogCocoa::OnAddFolderClicked() {
+  controller_->OnAddFolderClicked();
+}
+
+void MediaGalleriesDialogCocoa::OnCheckboxToggled(NSButton* checkbox) {
+ const MediaGalleriesDialogController::KnownGalleryPermissions& permissions =
+      controller_->permissions();
+  [[[alert_ buttons] objectAtIndex:0] setEnabled:YES];
+
+  for (MediaGalleriesDialogController::KnownGalleryPermissions::
+       const_reverse_iterator iter = permissions.rbegin();
+       iter != permissions.rend(); iter++) {
+    const MediaGalleryPrefInfo* gallery = &iter->second.pref_info;
+    NSString* device_id = base::SysUTF8ToNSString(gallery->device_id);
+    if ([[[checkbox cell] representedObject] isEqual:device_id]) {
+      controller_->DidToggleGallery(gallery, [checkbox state] == NSOnState);
+      break;
+    }
+  }
+}
+
+void MediaGalleriesDialogCocoa::SheetDidEnd(NSInteger result) {
+  switch (result) {
+    case NSAlertFirstButtonReturn:
+      accepted_ = true;
+      window_->CloseConstrainedWindow();
+      break;
+    case NSAlertSecondButtonReturn:
+      window_->CloseConstrainedWindow();
+      break;
+    default:
+      NOTREACHED();
+      break;
+  }
+}
+
+void MediaGalleriesDialogCocoa::UpdateGalleryCheckbox(
+    NSButton* checkbox,
+    const MediaGalleryPrefInfo* gallery,
+    bool permitted) {
+  CGFloat y_pos = 0;
+  if (checkbox) {
+    y_pos = NSMinY([checkbox frame]);
+  } else {
+    if ([checkboxes_ count] > 0)
+      y_pos = NSMaxY([[checkboxes_ lastObject] frame]) + kCheckboxMargin;
+
+    scoped_nsobject<NSButton> new_checkbox(
+        [[NSButton alloc] initWithFrame:NSZeroRect]);
+    NSString* device_id = base::SysUTF8ToNSString(gallery->device_id);
+    [[new_checkbox cell] setRepresentedObject:device_id];
+    [[new_checkbox cell] setLineBreakMode:NSLineBreakByTruncatingMiddle];
+    [new_checkbox setButtonType:NSSwitchButton];
+    [new_checkbox setTarget:cocoa_controller_];
+    [new_checkbox setAction:@selector(onCheckboxToggled:)];
+
+    [checkbox_container_ addSubview:new_checkbox];
+    [checkboxes_ addObject:new_checkbox];
+    checkbox = new_checkbox.get();
+  }
+
+  [checkbox setTitle:base::SysUTF16ToNSString(gallery->display_name)];
+  [checkbox setToolTip:
+      base::SysUTF16ToNSString(gallery->path.LossyDisplayName())];
+  [checkbox setState:permitted ? NSOnState : NSOffState];
+
+  [checkbox sizeToFit];
+  NSRect rect = [checkbox bounds];
+  rect.origin.y = y_pos;
+  rect.size.width = std::min(NSWidth(rect), kCheckboxMaxWidth);
+  [checkbox setFrame:rect];
+}
+
+void MediaGalleriesDialogCocoa::UpdateCheckboxContainerFrame() {
+  NSRect rect = NSMakeRect(
+      0, 0, kCheckboxMaxWidth, NSMaxY([[checkboxes_ lastObject] frame]));
+  [checkbox_container_ setFrame:rect];
+}
+
+void MediaGalleriesDialogCocoa::UpdateGallery(
+    const MediaGalleryPrefInfo* gallery,
+    bool permitted) {
+  NSButton* checkbox = nil;
+  NSString* device_id = base::SysUTF8ToNSString(gallery->device_id);
+
+  for (NSButton* button in checkboxes_.get()) {
+    if ([[[button cell] representedObject] isEqual:device_id]) {
+      checkbox = button;
+      break;
+    }
+  }
+
+  UpdateGalleryCheckbox(checkbox, gallery, permitted);
+  UpdateCheckboxContainerFrame();
+  [alert_ layout];
+}
+
+void MediaGalleriesDialogCocoa::DeleteDelegate() {
+  // As required by ConstrainedWindowMacDelegate, close the sheet if
+  // it's still open.
+  if (is_sheet_open())
+    [NSApp endSheet:sheet()];
+
+  controller_->DialogFinished(accepted_);
+}
+
+// static
+MediaGalleriesDialog* MediaGalleriesDialog::Create(
+    MediaGalleriesDialogController* controller) {
+  scoped_nsobject<MediaGalleriesCocoaController> cocoa_controller(
+      [[MediaGalleriesCocoaController alloc] init]);
+  return new MediaGalleriesDialogCocoa(controller, cocoa_controller);
+}
+
+}  // namespace chrome

chrome/browser/ui/gtk/extensions/media_galleries_dialog_gtk.cc

@@ -52,14 +52,9 @@ void MediaGalleriesDialogGtk::InitWidgets() {
   gtk_box_pack_start(GTK_BOX(contents_.get()), checkbox_container_,
                      FALSE, FALSE, 0);
 
-  // As a safeguard against the user skipping reading over the dialog and just
-  // confirming, the button will be unavailable for dialogs without any checks
-  // until the user toggles something.
-  bool confirm_available = false;
   const GalleryPermissions& permissions = controller_->permissions();
   for (GalleryPermissions::const_iterator iter = permissions.begin();
        iter != permissions.end(); iter++) {
-    confirm_available = confirm_available || iter->second.allowed;
     UpdateGallery(&iter->second.pref_info, iter->second.allowed);
   }
 
@@ -90,7 +85,10 @@ void MediaGalleriesDialogGtk::InitWidgets() {
   g_signal_connect(cancel, "clicked", G_CALLBACK(OnCancelThunk), this);
   gtk_box_pack_end(GTK_BOX(bottom_area), cancel, FALSE, FALSE, 0);
 
-  gtk_widget_set_sensitive(confirm_, confirm_available);
+  // As a safeguard against the user skipping reading over the dialog and just
+  // confirming, the button will be unavailable for dialogs without any checks
+  // until the user toggles something.
+  gtk_widget_set_sensitive(confirm_, controller_->HasPermittedGalleries());
 }
 
 void MediaGalleriesDialogGtk::UpdateGallery(
@@ -136,7 +134,7 @@ void MediaGalleriesDialogGtk::OnToggled(GtkWidget* widget) {
   for (CheckboxMap::iterator iter = checkbox_map_.begin();
        iter != checkbox_map_.end(); ++iter) {
     if (iter->second == widget) {
-      controller_->GalleryToggled(
+      controller_->DidToggleGallery(
           iter->first, gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(widget)));
       return;
     }

chrome/browser/ui/gtk/extensions/media_galleries_dialog_gtk_unittest.cc

@@ -15,10 +15,10 @@ class MediaGalleriesDialogTest : public testing::Test,
   virtual ~MediaGalleriesDialogTest() {}
 
   virtual void DialogFinished(bool accepted) OVERRIDE {}
-  virtual void GalleryToggled(const MediaGalleryPrefInfo* pref_info,
+  virtual void DidToggleGallery(const MediaGalleryPrefInfo* pref_info,
                                 bool enabled) OVERRIDE {
     toggles_++;
-    MediaGalleriesDialogController::GalleryToggled(pref_info, enabled);
+    MediaGalleriesDialogController::DidToggleGallery(pref_info, enabled);
   }
 
  protected:

chrome/browser/ui/views/extensions/media_galleries_dialog_views.cc

@@ -93,9 +93,8 @@ void MediaGalleriesDialogViews::InitChildViews() {
   for (GalleryPermissions::const_iterator iter = permissions.begin();
        iter != permissions.end(); ++iter) {
     AddOrUpdateGallery(&iter->second.pref_info, iter->second.allowed);
-    if (iter->second.allowed)
-      confirm_available_ = true;
   }
+  confirm_available_ = controller_->HasPermittedGalleries();
 
   // Add Gallery button.
   add_gallery_ = new views::NativeTextButton(
@@ -182,7 +181,7 @@ void MediaGalleriesDialogViews::ButtonPressed(views::Button* sender,
   for (CheckboxMap::iterator iter = checkbox_map_.begin();
        iter != checkbox_map_.end(); ++iter) {
     if (sender == iter->second) {
-      controller_->GalleryToggled(
+      controller_->DidToggleGallery(
           iter->first, static_cast<views::Checkbox*>(sender)->checked());
       return;
     }

chrome/chrome_browser.gypi

@@ -2765,6 +2765,8 @@
         'browser/ui/cocoa/extensions/extension_uninstall_dialog_cocoa.mm',
         'browser/ui/cocoa/extensions/extension_view_mac.h',
         'browser/ui/cocoa/extensions/extension_view_mac.mm',
+        'browser/ui/cocoa/extensions/media_galleries_dialog_cocoa.h',
+        'browser/ui/cocoa/extensions/media_galleries_dialog_cocoa.mm',
         'browser/ui/cocoa/extensions/shell_window_cocoa.h',
         'browser/ui/cocoa/extensions/shell_window_cocoa.mm',
         'browser/ui/cocoa/external_protocol_dialog.h',
@@ -5083,7 +5085,6 @@
             'browser/importer/nss_decryptor_system_nss.h',
             'browser/jankometer.cc',
             'browser/lifetime/application_lifetime_stub.cc',
-            'browser/media_gallery/media_galleries_dialog_controller.cc',
             'browser/password_manager/encryptor_posix.cc',
             'browser/password_manager/login_database_posix.cc',
             'browser/tab_contents/spellchecker_submenu_observer_hunspell.cc',