chrome/browser/extensions/api/system_display/display_info_provider.h

   1 // Copyright 2013 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_EXTENSIONS_API_SYSTEM_DISPLAY_DISPLAY_INFO_PROVIDER_H_
   6 #define CHROME_BROWSER_EXTENSIONS_API_SYSTEM_DISPLAY_DISPLAY_INFO_PROVIDER_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "chrome/common/extensions/api/system_display.h"
  12
  13 namespace gfx {
  14 class Display;
  15 }
  16
  17 namespace extensions {
  18
  19 typedef std::vector<linked_ptr<
  20     api::system_display::DisplayUnitInfo> > DisplayInfo;
  21
  22 class DisplayInfoProvider {
  23  public :
  24   static DisplayInfoProvider* Get();
  25
  26   DisplayInfoProvider();
  27   virtual ~DisplayInfoProvider();
  28
  29   // This is for tests that run in its own process (e.g. browser_tests).
  30   // Using this in other tests (e.g. unit_tests) will result in DCHECK failure.
  31   static void InitializeForTesting(DisplayInfoProvider* display_info_provider);
  32
  33   DisplayInfo GetAllDisplaysInfo();
  34
  35   virtual bool SetInfo(const std::string& display_id,
  36                        const api::system_display::DisplayProperties& info,
  37                        std::string* error);
  38
  39  private:
  40   // Update the content of the |unit| obtained for |display| using
  41   // platform specific method.
  42   virtual void UpdateDisplayUnitInfoForPlatform(
  43       const gfx::Display& display,
  44       extensions::api::system_display::DisplayUnitInfo* unit);
  45
  46   DISALLOW_COPY_AND_ASSIGN(DisplayInfoProvider);
  47 };
  48
  49 }  // namespace extensions
  50
  51 #endif  // CHROME_BROWSER_EXTENSIONS_API_SYSTEM_DISPLAY_DISPLAY_INFO_PROVIDER_H_