Implement input type=color UI

chrome/browser/ui/views/color_chooser_dialog.h

Index: chrome/browser/ui/views/color_chooser_dialog.h
diff --git a/chrome/browser/ui/views/color_chooser_dialog.h b/chrome/browser/ui/views/color_chooser_dialog.h
new file mode 100644
index 0000000000000000000000000000000000000000..8eef9ba76bcbb3533b0562d059876c2e205819bc
--- /dev/null
+++ b/chrome/browser/ui/views/color_chooser_dialog.h
@@ -0,0 +1,79 @@
+// 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_VIEWS_COLOR_CHOOSER_DIALOG_H_
+#define CHROME_BROWSER_UI_VIEWS_COLOR_CHOOSER_DIALOG_H_
+#pragma once
+
+#include "base/memory/ref_counted.h"
+#include "chrome/browser/ui/base_shell_dialog.h"
+#include "chrome/browser/ui/views/color_chooser_dialog.h"
+#include "chrome/browser/ui/views/base_shell_dialog_win.h"
+#include "third_party/skia/include/core/SkColor.h"
+
+class ColorChooserDialog
+    : public base::RefCountedThreadSafe<ColorChooserDialog>,
+      public BaseShellDialog,
+      public BaseShellDialogImpl {
+ public:
+  // An interface implemented by a Listener object wishing to know about the
+  // the results from the color chooser dialog.
+  class Listener {
+   public:
+    virtual ~Listener() {}
+    virtual void DidChooseColor(SkColor color) = 0;
+    virtual void DidEnd() = 0;
+  };
+
+  ColorChooserDialog(Listener* listener,
+                     SkColor initial_color,
+                     gfx::NativeWindow owning_window);
+  virtual ~ColorChooserDialog();
+
+  // BaseShellDialog:
+  virtual bool IsRunning(HWND owning_hwnd) const OVERRIDE;
+  virtual void ListenerDestroyed() OVERRIDE;
+
+ private:
+  struct ExecuteOpenParams {
+    ExecuteOpenParams(SkColor color, RunState run_state, HWND owner);
+    SkColor color;
+    RunState run_state;
+    HWND owner;
+  };
+
+  // Called on the dialog thread to show the actual color chooser.  This is
+  // shown modal to |params.owner|.  Once it's closed, calls back to
+  // DidCloseDialog() on the UI thread.
+  void ExecuteOpen(const ExecuteOpenParams& params);
+
+  // Called on the UI thread when a color chooser is closed.  |chose_color| is
+  // true if the user actually chose a color, in which case |color| is the
+  // chosen color.  Calls back to the |listener_| (if applicable) to notify it
+  // of the results, and copies the modified array of |custom_colors_| back to
+  // |g_custom_colors| so future dialogs will see the changes.
+  void DidCloseDialog(bool chose_color, SkColor color, RunState run_state);
+
+  // Copies the array of colors in |src| to |dst|.
+  void CopyCustomColors(COLORREF*, COLORREF*);
+
+  // The user's custom colors.  Kept process-wide so that they can be persisted
+  // from one dialog invocation to the next.
+  static COLORREF g_custom_colors[16];
+
+  // A copy of the custom colors for the current dialog to display and modify.
+  // This allows us to safely access the colors even if multiple windows are
+  // simultaneously showing color choosers (which would cause thread safety
+  // problems if we gave them direct handles to |g_custom_colors|).
+  COLORREF custom_colors_[16];
+
+  // The listener to notify when the user closes the dialog.  This may be set to
+  // NULL before the color chooser is closed, signalling that the listener no
+  // longer cares about the outcome.
+  Listener* listener_;
+
+  DISALLOW_COPY_AND_ASSIGN(ColorChooserDialog);
+};
+
+#endif  // CHROME_BROWSER_UI_VIEWS_COLOR_CHOOSER_DIALOG_H_