Implement input type=color UI

chrome/browser/ui/views/color_chooser_win.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 <windows.h>
+
+#include "chrome/browser/platform_util.h"
+#include "chrome/browser/ui/views/color_chooser_dialog.h"
+#include "content/public/browser/render_view_host.h"
+#include "content/public/browser/color_chooser.h"
+#include "content/public/browser/render_widget_host_view.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_contents_observer.h"
+
+class ColorChooserWin : public content::ColorChooser,
+                        public ColorChooserDialog::Listener,
+                        public content::WebContentsObserver {
+ public:
+  ColorChooserWin(int identifier,
+                  content::WebContents* tab,
+                  SkColor initial_color);
+  ~ColorChooserWin();
+
+  // content::ColorChooser:
+  virtual void End() OVERRIDE {}
+  virtual void SetSelectedColor(SkColor color) OVERRIDE {}
+
+  // ColorChooserDialog::Listener:
+  virtual void DidChooseColor(SkColor color);
+  virtual void DidEnd();
+
+ private:
+  scoped_refptr<ColorChooserDialog> color_chooser_dialog_;
+};
+
+content::ColorChooser* content::ColorChooser::Create(int identifier,
+                                                     content::WebContents* tab,
+                                                     SkColor initial_color) {
+  return new ColorChooserWin(identifier, tab, initial_color);
+}
+
+ColorChooserWin::ColorChooserWin(int identifier,
+                                 content::WebContents* tab,
+                                 SkColor initial_color)
+    : content::ColorChooser(identifier),
+      content::WebContentsObserver(tab) {
+  gfx::NativeWindow owning_window = platform_util::GetTopLevel(
+      web_contents()->GetRenderViewHost()->GetView()->GetNativeView());
+  color_chooser_dialog_ = new ColorChooserDialog(this,
+                                                 initial_color,
+                                                 owning_window);
+}
+
+ColorChooserWin::~ColorChooserWin() {
+  // Always call End() before destroying.
+  DCHECK(!color_chooser_dialog_);
+}
+
+void ColorChooserWin::DidChooseColor(SkColor color) {
+  if (web_contents())
+    web_contents()->DidChooseColorInColorChooser(identifier(), color);
+}
+
+void ColorChooserWin::DidEnd() {
+  if (color_chooser_dialog_.get()) {
+    color_chooser_dialog_->ListenerDestroyed();
+    color_chooser_dialog_ = NULL;
+  }
+  if (web_contents())
+    web_contents()->DidEndColorChooser(identifier());
+}