| // Copyright (c) 2013 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_METRICS_CHROME_BROWSER_MAIN_EXTRA_PARTS_METRICS_H_ |
| #define CHROME_BROWSER_METRICS_CHROME_BROWSER_MAIN_EXTRA_PARTS_METRICS_H_ |
| |
| #include "base/basictypes.h" |
| #include "base/compiler_specific.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "chrome/browser/chrome_browser_main_extra_parts.h" |
| #include "ui/gfx/display_observer.h" |
| |
| class ChromeBrowserMainParts; |
| |
| namespace chrome { |
| void AddMetricsExtraParts(ChromeBrowserMainParts* main_parts); |
| } |
| |
| class ChromeBrowserMainExtraPartsMetrics : public ChromeBrowserMainExtraParts, |
| public gfx::DisplayObserver { |
| public: |
| ChromeBrowserMainExtraPartsMetrics(); |
| ~ChromeBrowserMainExtraPartsMetrics() override; |
| |
| // Overridden from ChromeBrowserMainExtraParts: |
| void PreProfileInit() override; |
| void PreBrowserStart() override; |
| void PostBrowserStart() override; |
| |
| private: |
| #if defined(OS_MACOSX) && !defined(OS_IOS) |
| // Records Mac specific metrics. |
| void RecordMacMetrics(); |
| #endif // defined(OS_MACOSX) && !defined(OS_IOS) |
| |
| // DisplayObserver overrides. |
| virtual void OnDisplayAdded(const gfx::Display& new_display) override; |
| virtual void OnDisplayRemoved(const gfx::Display& old_display) override; |
| virtual void OnDisplayMetricsChanged(const gfx::Display& display, |
| uint32_t changed_metrics) override; |
| |
| // If the number of displays has changed, emit a UMA metric. |
| void EmitDisplaysChangedMetric(); |
| |
| // A cached value for the number of displays. |
| int display_count_; |
| |
| // True iff |this| instance is registered as an observer of the native |
| // screen. |
| bool is_screen_observer_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ChromeBrowserMainExtraPartsMetrics); |
| }; |
| |
| #endif // CHROME_BROWSER_METRICS_CHROME_BROWSER_MAIN_EXTRA_PARTS_METRICS_H_ |