Index: Source/core/frame/DeviceEventControllerBase.h |
diff --git a/Source/core/frame/DeviceEventControllerBase.h b/Source/core/frame/DeviceEventControllerBase.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..2b9011b056159a3898b26e9f35c7455c1ea75172 |
--- /dev/null |
+++ b/Source/core/frame/DeviceEventControllerBase.h |
@@ -0,0 +1,76 @@ |
+/* |
+ * Copyright (C) 2014 Google Inc. All rights reserved. |
Inactive
2014/06/03 13:25:32
Please use new copyright headers:
http://dev.chrom
timvolodine
2014/06/03 18:45:54
Done.
|
+ * |
+ * Redistribution and use in source and binary forms, with or without |
+ * modification, are permitted provided that the following conditions are |
+ * met: |
+ * |
+ * * Redistributions of source code must retain the above copyright |
+ * notice, this list of conditions and the following disclaimer. |
+ * * Redistributions in binary form must reproduce the above |
+ * copyright notice, this list of conditions and the following disclaimer |
+ * in the documentation and/or other materials provided with the |
+ * distribution. |
+ * * Neither the name of Google Inc. nor the names of its |
+ * contributors may be used to endorse or promote products derived from |
+ * this software without specific prior written permission. |
+ * |
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
+ */ |
+ |
+#ifndef DeviceEventControllerBase_h |
+#define DeviceEventControllerBase_h |
+ |
+#include "core/page/PageLifecycleObserver.h" |
+#include "platform/Timer.h" |
+ |
+namespace WebCore { |
+ |
+// Base controller class for registering controllers with a dispatcher. |
+// It watches page visibility and calls stopUpdating when page is not visible. |
+// It provides a didUpdateData() callback method which is called when new data |
+// it available. |
+class DeviceEventControllerBase : public PageLifecycleObserver { |
+ |
Inactive
2014/06/03 13:49:33
nit: Extra line
timvolodine
2014/06/03 18:45:54
Done.
|
+public: |
+ void startUpdating(); |
+ void stopUpdating(); |
+ |
+ // This is called when new data becomes available. |
+ virtual void didUpdateData() = 0; |
+ |
+protected: |
+ explicit DeviceEventControllerBase(Page*); |
+ virtual ~DeviceEventControllerBase(); |
+ |
+ virtual void registerWithDispatcher() = 0; |
+ virtual void unregisterWithDispatcher() = 0; |
+ |
+ // When true initiates a one-shot didUpdateData() when startUpdating() is called. |
+ virtual bool isInvokeInitialUpdate() = 0; |
+ |
+ bool m_hasEventListener; |
+ |
+private: |
+ // Inherited from PageLifecycleObserver. |
+ virtual void pageVisibilityChanged() OVERRIDE FINAL; |
+ |
+ void oneShotCallback(Timer<DeviceEventControllerBase>*); |
+ |
+ bool m_isActive; |
+ Timer<DeviceEventControllerBase> m_timer; |
+}; |
+ |
+} // namespace WebCore |
+ |
+#endif // DeviceEventControllerBase_h |