MacViews: Unify web contents modal dialog types

chrome/browser/ui/cocoa/web_contents_modal_dialog_manager_cocoa.mm

 // 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.
 
+#import "chrome/browser/ui/cocoa/web_contents_modal_dialog_manager_cocoa.h"
+
+#import "chrome/browser/ui/cocoa/constrained_window/constrained_window_custom_sheet.h"
+#import "chrome/browser/ui/cocoa/constrained_window/constrained_window_sheet_controller.h"
+#import "chrome/browser/ui/cocoa/tabs/tab_strip_controller.h"
 #include "components/web_modal/web_contents_modal_dialog_manager.h"
 
-#include "chrome/browser/ui/cocoa/constrained_window/constrained_window_mac.h"
-#include "components/web_modal/single_web_contents_dialog_manager.h"
+using web_modal::NativeWebContentsModalDialog;
+using web_modal::SingleWebContentsDialogManagerDelegate;
 
-using web_modal::NativeWebContentsModalDialog;
+WebContentsModalDialogManagerCocoa::WebContentsModalDialogManagerCocoa(
+    id<ConstrainedWindowSheet> sheet,
+    web_modal::SingleWebContentsDialogManagerDelegate* delegate)
+    : sheet_([sheet retain]), delegate_(delegate), shown_(false) {
+}
 
-namespace {
+WebContentsModalDialogManagerCocoa::~WebContentsModalDialogManagerCocoa() {
+}
 
-class NativeWebContentsModalDialogManagerCocoa
-    : public web_modal::SingleWebContentsDialogManager {
- public:
-  NativeWebContentsModalDialogManagerCocoa(
-      NativeWebContentsModalDialog dialog)
-      : dialog_(dialog) {
-  }
+void WebContentsModalDialogManagerCocoa::AddObserver(Observer* observer) {
+  observers_.AddObserver(observer);
+}
 
-  ~NativeWebContentsModalDialogManagerCocoa() override {}
+void WebContentsModalDialogManagerCocoa::RemoveObserver(Observer* observer) {
+  observers_.RemoveObserver(observer);
+}
 
-  // SingleWebContentsDialogManager overrides
-  void Show() override {
-    GetConstrainedWindowMac(dialog())->ShowWebContentsModalDialog();
-  }
+void WebContentsModalDialogManagerCocoa::Show() {
+  if (shown_)
+    return;
 
-  void Hide() override {}
+  content::WebContents* web_contents = delegate_->GetWebContents();
+  NSWindow* parent_window = web_contents->GetTopLevelNativeWindow();
+  NSView* parent_view = GetSheetParentViewForWebContents(web_contents);
+  if (!parent_window || !parent_view)
+    return;
 
-  void Close() override {
-    GetConstrainedWindowMac(dialog())->CloseWebContentsModalDialog();
-  }
+  shown_ = true;
+  [[ConstrainedWindowSheetController controllerForParentWindow:parent_window]
+      showSheet:sheet_ forParentView:parent_view];
+}
 
-  void Focus() override {
-    GetConstrainedWindowMac(dialog())->FocusWebContentsModalDialog();
-  }
+void WebContentsModalDialogManagerCocoa::Hide() {
+}
 
-  void Pulse() override {
-    GetConstrainedWindowMac(dialog())->PulseWebContentsModalDialog();
-  }
+void WebContentsModalDialogManagerCocoa::Close() {
+  [[ConstrainedWindowSheetController controllerForSheet:sheet_]
+      closeSheet:sheet_];
+  FOR_EACH_OBSERVER(Observer, observers_, OnDialogClosing());
+  delegate_->WillClose(dialog());
+}
 
-  void HostChanged(web_modal::WebContentsModalDialogHost* new_host) override {}
+void WebContentsModalDialogManagerCocoa::Focus() {
+}
 
-  NativeWebContentsModalDialog dialog() override { return dialog_; }
+void WebContentsModalDialogManagerCocoa::Pulse() {
+  [[ConstrainedWindowSheetController controllerForSheet:sheet_]
+      pulseSheet:sheet_];
+}
 
- private:
-  static ConstrainedWindowMac* GetConstrainedWindowMac(
-      NativeWebContentsModalDialog dialog) {
-    return static_cast<ConstrainedWindowMac*>(dialog);
-  }
+void WebContentsModalDialogManagerCocoa::HostChanged(
+    web_modal::WebContentsModalDialogHost* new_host) {
+}
 
-  // In mac this is a pointer to a ConstrainedWindowMac.
-  // TODO(gbillock): Replace this casting system with a more typesafe call path.
-  NativeWebContentsModalDialog dialog_;
-
-  DISALLOW_COPY_AND_ASSIGN(NativeWebContentsModalDialogManagerCocoa);
-};
-
-}  // namespace
+NativeWebContentsModalDialog WebContentsModalDialogManagerCocoa::dialog() {
+  return [sheet_ sheetWindow];
+}
 
 namespace web_modal {
 
 SingleWebContentsDialogManager*
-    WebContentsModalDialogManager::CreateNativeWebModalManager(
-        NativeWebContentsModalDialog dialog,
-        SingleWebContentsDialogManagerDelegate* native_delegate) {
-  return new NativeWebContentsModalDialogManagerCocoa(dialog);
+WebContentsModalDialogManager::CreateNativeWebModalManager(
+    NativeWebContentsModalDialog dialog,
+    SingleWebContentsDialogManagerDelegate* delegate) {
+  base::scoped_nsobject<CustomConstrainedWindowSheet> sheet(
+      [[CustomConstrainedWindowSheet alloc] initWithCustomWindow:dialog]);
+  return new WebContentsModalDialogManagerCocoa(sheet, delegate);
 }
 
 }  // namespace web_modal