content/public/browser/color_chooser.h

   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 CONTENT_PUBLIC_BROWSER_COLOR_CHOOSER_H_
   6 #define CONTENT_PUBLIC_BROWSER_COLOR_CHOOSER_H_
   7
   8 #include "third_party/skia/include/core/SkColor.h"
   9
  10 namespace content {
  11
  12 class WebContents;
  13
  14 // Abstraction object for color choosers for each platform.
  15 class ColorChooser {
  16  public:
  17   static ColorChooser* Create(int identifier,
  18                               WebContents* web_contents,
  19                               SkColor initial_color);
  20
  21   explicit ColorChooser(int identifier) : identifier_(identifier) {}
  22   virtual ~ColorChooser() {}
  23
  24   // Returns a unique identifier for this chooser.  Identifiers are unique
  25   // across a renderer process.  This avoids race conditions in synchronizing
  26   // the browser and renderer processes.  For example, if a renderer closes one
  27   // chooser and opens another, and simultaneously the user picks a color in the
  28   // first chooser, the IDs can be used to drop the "chose a color" message
  29   // rather than erroneously tell the renderer that the user picked a color in
  30   // the second chooser.
  31   int identifier() const { return identifier_; }
  32
  33   // Ends connection with color chooser. Closes color chooser depending on the
  34   // platform.
  35   virtual void End() = 0;
  36
  37   // Sets the selected color.
  38   virtual void SetSelectedColor(SkColor color) = 0;
  39
  40  private:
  41   int identifier_;
  42 };
  43
  44 }  // namespace content
  45
  46 #endif  // CONTENT_PUBLIC_BROWSER_COLOR_CHOOSER_H_