Get foreground tab on Android
[chromium-blink-merge.git] / webkit / child / webkitplatformsupport_impl.h
blob000708b6c5045212253cebfa8af65bad163ab089
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.
5 #ifndef WEBKIT_CHILD_WEBKITPLATFORMSUPPORT_IMPL_H_
6 #define WEBKIT_CHILD_WEBKITPLATFORMSUPPORT_IMPL_H_
8 #include "base/compiler_specific.h"
9 #include "base/debug/trace_event.h"
10 #include "base/platform_file.h"
11 #include "base/timer/timer.h"
12 #include "third_party/WebKit/public/platform/Platform.h"
13 #include "third_party/WebKit/public/platform/WebURLError.h"
14 #include "ui/base/layout.h"
15 #include "webkit/child/resource_loader_bridge.h"
16 #include "webkit/child/webkit_child_export.h"
18 namespace base {
19 class MessageLoop;
22 namespace blink {
23 class WebSocketStreamHandle;
26 namespace webkit_glue {
28 class WebSocketStreamHandleDelegate;
29 class WebSocketStreamHandleBridge;
31 class WEBKIT_CHILD_EXPORT WebKitPlatformSupportImpl :
32 NON_EXPORTED_BASE(public blink::Platform) {
33 public:
34 WebKitPlatformSupportImpl();
35 virtual ~WebKitPlatformSupportImpl();
37 // Platform methods (partial implementation):
38 virtual base::PlatformFile databaseOpenFile(
39 const blink::WebString& vfs_file_name, int desired_flags);
40 virtual int databaseDeleteFile(const blink::WebString& vfs_file_name,
41 bool sync_dir);
42 virtual long databaseGetFileAttributes(
43 const blink::WebString& vfs_file_name);
44 virtual long long databaseGetFileSize(const blink::WebString& vfs_file_name);
45 virtual long long databaseGetSpaceAvailableForOrigin(
46 const blink::WebString& origin_identifier);
47 virtual blink::WebString signedPublicKeyAndChallengeString(
48 unsigned key_size_index, const blink::WebString& challenge,
49 const blink::WebURL& url);
50 virtual size_t memoryUsageMB();
51 virtual size_t actualMemoryUsageMB();
52 virtual size_t physicalMemoryMB();
53 virtual size_t numberOfProcessors();
55 virtual void startHeapProfiling(const blink::WebString& prefix);
56 virtual void stopHeapProfiling() OVERRIDE;
57 virtual void dumpHeapProfiling(const blink::WebString& reason);
58 virtual blink::WebString getHeapProfile() OVERRIDE;
60 virtual bool processMemorySizesInBytes(size_t* private_bytes,
61 size_t* shared_bytes);
62 virtual bool memoryAllocatorWasteInBytes(size_t* size);
63 virtual size_t maxDecodedImageBytes() OVERRIDE;
64 virtual blink::WebURLLoader* createURLLoader();
65 virtual blink::WebSocketStreamHandle* createSocketStreamHandle();
66 virtual blink::WebString userAgent(const blink::WebURL& url);
67 virtual blink::WebData parseDataURL(
68 const blink::WebURL& url, blink::WebString& mimetype,
69 blink::WebString& charset);
70 virtual blink::WebURLError cancelledError(const blink::WebURL& url) const;
71 virtual void decrementStatsCounter(const char* name);
72 virtual void incrementStatsCounter(const char* name);
73 virtual void histogramCustomCounts(
74 const char* name, int sample, int min, int max, int bucket_count);
75 virtual void histogramEnumeration(
76 const char* name, int sample, int boundary_value);
77 virtual void histogramSparse(const char* name, int sample);
78 virtual const unsigned char* getTraceCategoryEnabledFlag(
79 const char* category_name);
80 virtual long* getTraceSamplingState(const unsigned thread_bucket);
81 virtual TraceEventHandle addTraceEvent(
82 char phase,
83 const unsigned char* category_group_enabled,
84 const char* name,
85 unsigned long long id,
86 int num_args,
87 const char** arg_names,
88 const unsigned char* arg_types,
89 const unsigned long long* arg_values,
90 unsigned char flags);
91 virtual void updateTraceEventDuration(
92 const unsigned char* category_group_enabled,
93 const char* name,
94 TraceEventHandle);
95 virtual blink::WebData loadResource(const char* name);
96 virtual blink::WebString queryLocalizedString(
97 blink::WebLocalizedString::Name name);
98 virtual blink::WebString queryLocalizedString(
99 blink::WebLocalizedString::Name name, int numeric_value);
100 virtual blink::WebString queryLocalizedString(
101 blink::WebLocalizedString::Name name, const blink::WebString& value);
102 virtual blink::WebString queryLocalizedString(
103 blink::WebLocalizedString::Name name,
104 const blink::WebString& value1, const blink::WebString& value2);
105 virtual void suddenTerminationChanged(bool enabled) { }
106 virtual double currentTime();
107 virtual double monotonicallyIncreasingTime();
108 virtual void cryptographicallyRandomValues(
109 unsigned char* buffer, size_t length);
110 virtual void setSharedTimerFiredFunction(void (*func)());
111 virtual void setSharedTimerFireInterval(double interval_seconds);
112 virtual void stopSharedTimer();
113 virtual void callOnMainThread(void (*func)(void*), void* context);
116 // Embedder functions. The following are not implemented by the glue layer and
117 // need to be specialized by the embedder.
119 // Gets a localized string given a message id. Returns an empty string if the
120 // message id is not found.
121 virtual base::string16 GetLocalizedString(int message_id) = 0;
123 // Returns the raw data for a resource. This resource must have been
124 // specified as BINDATA in the relevant .rc file.
125 virtual base::StringPiece GetDataResource(int resource_id,
126 ui::ScaleFactor scale_factor) = 0;
128 // Creates a ResourceLoaderBridge.
129 virtual ResourceLoaderBridge* CreateResourceLoader(
130 const ResourceLoaderBridge::RequestInfo& request_info) = 0;
131 // Creates a WebSocketStreamHandleBridge.
132 virtual WebSocketStreamHandleBridge* CreateWebSocketStreamBridge(
133 blink::WebSocketStreamHandle* handle,
134 WebSocketStreamHandleDelegate* delegate) = 0;
136 void SuspendSharedTimer();
137 void ResumeSharedTimer();
138 virtual void OnStartSharedTimer(base::TimeDelta delay) {}
140 private:
141 void DoTimeout() {
142 if (shared_timer_func_ && !shared_timer_suspended_)
143 shared_timer_func_();
146 base::MessageLoop* main_loop_;
147 base::OneShotTimer<WebKitPlatformSupportImpl> shared_timer_;
148 void (*shared_timer_func_)();
149 double shared_timer_fire_time_;
150 bool shared_timer_fire_time_was_set_while_suspended_;
151 int shared_timer_suspended_; // counter
154 } // namespace webkit_glue
156 #endif // WEBKIT_CHILD_WEBKITPLATFORMSUPPORT_IMPL_H_