1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CHROME_BROWSER_UI_VIEWS_COLOR_CHOOSER_DIALOG_H_
6#define CHROME_BROWSER_UI_VIEWS_COLOR_CHOOSER_DIALOG_H_
7
8#include "base/memory/ref_counted.h"
9#include "chrome/browser/ui/views/color_chooser_dialog.h"
10#include "third_party/skia/include/core/SkColor.h"
11#include "ui/shell_dialogs/base_shell_dialog.h"
12#include "ui/shell_dialogs/base_shell_dialog_win.h"
13
14namespace views {
15class ColorChooserListener;
16}
17
18class ColorChooserDialog
19    : public base::RefCountedThreadSafe<ColorChooserDialog>,
20      public ui::BaseShellDialog,
21      public ui::BaseShellDialogImpl {
22 public:
23  ColorChooserDialog(views::ColorChooserListener* listener,
24                     SkColor initial_color,
25                     gfx::NativeWindow owning_window);
26  virtual ~ColorChooserDialog();
27
28  // BaseShellDialog:
29  virtual bool IsRunning(gfx::NativeWindow owning_window) const OVERRIDE;
30  virtual void ListenerDestroyed() OVERRIDE;
31
32 private:
33  struct ExecuteOpenParams {
34    ExecuteOpenParams(SkColor color, RunState run_state, HWND owner);
35    SkColor color;
36    RunState run_state;
37    HWND owner;
38  };
39
40  // Called on the dialog thread to show the actual color chooser.  This is
41  // shown modal to |params.owner|.  Once it's closed, calls back to
42  // DidCloseDialog() on the UI thread.
43  void ExecuteOpen(const ExecuteOpenParams& params);
44
45  // Called on the UI thread when a color chooser is closed.  |chose_color| is
46  // true if the user actually chose a color, in which case |color| is the
47  // chosen color.  Calls back to the |listener_| (if applicable) to notify it
48  // of the results, and copies the modified array of |custom_colors_| back to
49  // |g_custom_colors| so future dialogs will see the changes.
50  void DidCloseDialog(bool chose_color, SkColor color, RunState run_state);
51
52  // Copies the array of colors in |src| to |dst|.
53  void CopyCustomColors(COLORREF*, COLORREF*);
54
55  // The user's custom colors.  Kept process-wide so that they can be persisted
56  // from one dialog invocation to the next.
57  static COLORREF g_custom_colors[16];
58
59  // A copy of the custom colors for the current dialog to display and modify.
60  // This allows us to safely access the colors even if multiple windows are
61  // simultaneously showing color choosers (which would cause thread safety
62  // problems if we gave them direct handles to |g_custom_colors|).
63  COLORREF custom_colors_[16];
64
65  // The listener to notify when the user closes the dialog.  This may be set to
66  // NULL before the color chooser is closed, signalling that the listener no
67  // longer cares about the outcome.
68  views::ColorChooserListener* listener_;
69
70  DISALLOW_COPY_AND_ASSIGN(ColorChooserDialog);
71};
72
73#endif  // CHROME_BROWSER_UI_VIEWS_COLOR_CHOOSER_DIALOG_H_
74