| /* |
| * Copyright (C) 2012 Google Inc. All rights reserved. |
| * |
| * 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 Platform_h |
| #define Platform_h |
| |
| #ifdef WIN32 |
| #include <windows.h> |
| #endif |
| |
| #include "WebAudioDevice.h" |
| #include "WebBatteryStatusListener.h" |
| #include "WebCommon.h" |
| #include "WebData.h" |
| #include "WebDeviceLightListener.h" |
| #include "WebGamepadListener.h" |
| #include "WebGamepads.h" |
| #include "WebGestureDevice.h" |
| #include "WebGraphicsContext3D.h" |
| #include "WebLocalizedString.h" |
| #include "WebPlatformEventType.h" |
| #include "WebSize.h" |
| #include "WebSpeechSynthesizer.h" |
| #include "WebStorageQuotaCallbacks.h" |
| #include "WebStorageQuotaType.h" |
| #include "WebString.h" |
| #include "WebURLError.h" |
| #include "WebVector.h" |
| #include "WebWaitableEvent.h" |
| |
| class GrContext; |
| |
| namespace blink { |
| |
| class WebAudioBus; |
| class WebBlobRegistry; |
| class WebClipboard; |
| class WebCompositorSupport; |
| class WebConvertableToTraceFormat; |
| class WebCookieJar; |
| class WebCrypto; |
| class WebDatabaseObserver; |
| class WebDiscardableMemory; |
| class WebPlatformEventListener; |
| class WebFallbackThemeEngine; |
| class WebFileSystem; |
| class WebFileUtilities; |
| class WebFlingAnimator; |
| class WebGeofencingProvider; |
| class WebGestureCurve; |
| class WebGraphicsContext3DProvider; |
| class WebIDBFactory; |
| class WebMIDIAccessor; |
| class WebMIDIAccessorClient; |
| class WebMediaRecorderHandler; |
| class WebMediaStreamCenter; |
| class WebMediaStreamCenterClient; |
| class WebMemoryDumpProvider; |
| class WebMessagePortChannel; |
| class WebMimeRegistry; |
| class WebNavigatorConnectProvider; |
| class WebNotificationManager; |
| class WebPermissionClient; |
| class WebPluginListBuilder; |
| class WebPrescientNetworking; |
| class WebProcessMemoryDump; |
| class WebPublicSuffixList; |
| class WebPushProvider; |
| class WebRTCCertificateGenerator; |
| class WebRTCPeerConnectionHandler; |
| class WebRTCPeerConnectionHandlerClient; |
| class WebSandboxSupport; |
| class WebScrollbarBehavior; |
| class WebSecurityOrigin; |
| class WebServicePortProvider; |
| class WebServicePortProviderClient; |
| class WebServiceWorkerCacheStorage; |
| class WebSocketHandle; |
| class WebSpeechSynthesizer; |
| class WebSpeechSynthesizerClient; |
| class WebStorageNamespace; |
| class WebSyncProvider; |
| struct WebFloatPoint; |
| class WebThemeEngine; |
| class WebThread; |
| class WebURL; |
| class WebURLLoader; |
| class WebUnitTestSupport; |
| struct WebLocalizedString; |
| struct WebSize; |
| |
| class Platform { |
| public: |
| // HTML5 Database ------------------------------------------------------ |
| |
| #ifdef WIN32 |
| typedef HANDLE FileHandle; |
| #else |
| typedef int FileHandle; |
| #endif |
| |
| BLINK_PLATFORM_EXPORT static void initialize(Platform*); |
| BLINK_PLATFORM_EXPORT static void shutdown(); |
| BLINK_PLATFORM_EXPORT static Platform* current(); |
| |
| // May return null. |
| virtual WebCookieJar* cookieJar() { return nullptr; } |
| |
| // Must return non-null. |
| virtual WebClipboard* clipboard() { return nullptr; } |
| |
| // Must return non-null. |
| virtual WebFileUtilities* fileUtilities() { return nullptr; } |
| |
| // Must return non-null. |
| virtual WebMimeRegistry* mimeRegistry() { return nullptr; } |
| |
| // May return null if sandbox support is not necessary |
| virtual WebSandboxSupport* sandboxSupport() { return nullptr; } |
| |
| // May return null on some platforms. |
| virtual WebThemeEngine* themeEngine() { return nullptr; } |
| |
| virtual WebFallbackThemeEngine* fallbackThemeEngine() { return nullptr; } |
| |
| // May return null. |
| virtual WebSpeechSynthesizer* createSpeechSynthesizer(WebSpeechSynthesizerClient*) { return nullptr; } |
| |
| |
| // Audio -------------------------------------------------------------- |
| |
| virtual double audioHardwareSampleRate() { return 0; } |
| virtual size_t audioHardwareBufferSize() { return 0; } |
| virtual unsigned audioHardwareOutputChannels() { return 0; } |
| |
| // Creates a device for audio I/O. |
| // Pass in (numberOfInputChannels > 0) if live/local audio input is desired. |
| virtual WebAudioDevice* createAudioDevice(size_t bufferSize, unsigned numberOfInputChannels, unsigned numberOfChannels, double sampleRate, WebAudioDevice::RenderCallback*, const WebString& deviceId) { return nullptr; } |
| |
| |
| // MIDI ---------------------------------------------------------------- |
| |
| // Creates a platform dependent WebMIDIAccessor. MIDIAccessor under platform |
| // creates and owns it. |
| virtual WebMIDIAccessor* createMIDIAccessor(WebMIDIAccessorClient*) { return nullptr; } |
| |
| |
| // Blob ---------------------------------------------------------------- |
| |
| // Must return non-null. |
| virtual WebBlobRegistry* blobRegistry() { return nullptr; } |
| |
| // Database ------------------------------------------------------------ |
| |
| // Opens a database file; dirHandle should be 0 if the caller does not need |
| // a handle to the directory containing this file |
| virtual FileHandle databaseOpenFile(const WebString& vfsFileName, int desiredFlags) { return FileHandle(); } |
| |
| // Deletes a database file and returns the error code |
| virtual int databaseDeleteFile(const WebString& vfsFileName, bool syncDir) { return 0; } |
| |
| // Returns the attributes of the given database file |
| virtual long databaseGetFileAttributes(const WebString& vfsFileName) { return 0; } |
| |
| // Returns the size of the given database file |
| virtual long long databaseGetFileSize(const WebString& vfsFileName) { return 0; } |
| |
| // Returns the space available for the given origin |
| virtual long long databaseGetSpaceAvailableForOrigin(const WebString& originIdentifier) { return 0; } |
| |
| // Set the size of the given database file |
| virtual bool databaseSetFileSize(const WebString& vfsFileName, long long size) { return false; } |
| |
| |
| // DOM Storage -------------------------------------------------- |
| |
| // Return a LocalStorage namespace |
| virtual WebStorageNamespace* createLocalStorageNamespace() { return nullptr; } |
| |
| |
| // FileSystem ---------------------------------------------------------- |
| |
| // Must return non-null. |
| virtual WebFileSystem* fileSystem() { return nullptr; } |
| |
| |
| // IDN conversion ------------------------------------------------------ |
| |
| virtual WebString convertIDNToUnicode(const WebString& host, const WebString& languages) { return host; } |
| |
| |
| // IndexedDB ---------------------------------------------------------- |
| |
| // Must return non-null. |
| virtual WebIDBFactory* idbFactory() { return nullptr; } |
| |
| |
| // Cache Storage ---------------------------------------------------------- |
| |
| // The caller is responsible for deleting the returned object. |
| virtual WebServiceWorkerCacheStorage* cacheStorage(const WebString& originIdentifier) { return nullptr; } |
| |
| // Gamepad ------------------------------------------------------------- |
| |
| virtual void sampleGamepads(WebGamepads& into) { into.length = 0; } |
| |
| // History ------------------------------------------------------------- |
| |
| // Returns the hash for the given canonicalized URL for use in visited |
| // link coloring. |
| virtual unsigned long long visitedLinkHash( |
| const char* canonicalURL, size_t length) { return 0; } |
| |
| // Returns whether the given link hash is in the user's history. The |
| // hash must have been generated by calling VisitedLinkHash(). |
| virtual bool isLinkVisited(unsigned long long linkHash) { return false; } |
| |
| |
| // Keygen -------------------------------------------------------------- |
| |
| // Handle the <keygen> tag for generating client certificates |
| // Returns a base64 encoded signed copy of a public key from a newly |
| // generated key pair and the supplied challenge string. keySizeindex |
| // specifies the strength of the key. |
| virtual WebString signedPublicKeyAndChallengeString(unsigned keySizeIndex, |
| const WebString& challenge, |
| const WebURL& url) { return WebString(); } |
| |
| |
| // Memory -------------------------------------------------------------- |
| |
| // Returns the current space allocated for the pagefile, in MB. |
| // That is committed size for Windows and virtual memory size for POSIX |
| virtual size_t memoryUsageMB() { return 0; } |
| |
| // Same as above, but always returns actual value, without any caches. |
| virtual size_t actualMemoryUsageMB() { return 0; } |
| |
| // Return the physical memory of the current machine, in MB. |
| virtual size_t physicalMemoryMB() { return 0; } |
| |
| // Return the available virtual memory of the current machine, in MB. Or |
| // zero, if there is no limit. |
| virtual size_t virtualMemoryLimitMB() { return 0; } |
| |
| // True when Blink runs on low end devices. |
| virtual bool isLowEndDeviceMode() { return false; } |
| |
| // Return the number of of processors of the current machine. |
| virtual size_t numberOfProcessors() { return 0; } |
| |
| // Returns private and shared usage, in bytes. Private bytes is the amount of |
| // memory currently allocated to this process that cannot be shared. Returns |
| // false on platform specific error conditions. |
| virtual bool processMemorySizesInBytes(size_t* privateBytes, size_t* sharedBytes) { return false; } |
| |
| // Reports number of bytes used by memory allocator for internal needs. |
| // Returns true if the size has been reported, or false otherwise. |
| virtual bool memoryAllocatorWasteInBytes(size_t*) { return false; } |
| |
| // Allocates discardable memory. May return nullptr, even if the platform supports |
| // discardable memory. If nonzero, however, then the WebDiscardableMmeory is |
| // returned in an locked state. You may use its underlying data() member |
| // directly, taking care to unlock it when you are ready to let it become |
| // discardable. |
| virtual WebDiscardableMemory* allocateAndLockDiscardableMemory(size_t bytes) { return nullptr; } |
| |
| static const size_t noDecodedImageByteLimit = static_cast<size_t>(-1); |
| |
| // Returns the maximum amount of memory a decoded image should be allowed. |
| // See comments on ImageDecoder::m_maxDecodedBytes. |
| virtual size_t maxDecodedImageBytes() { return noDecodedImageByteLimit; } |
| |
| // Process ------------------------------------------------------------- |
| |
| // Returns a unique identifier for a process. This may not necessarily be |
| // the process's process ID. |
| virtual uint32_t getUniqueIdForProcess() { return 0; } |
| |
| |
| // Message Ports ------------------------------------------------------- |
| |
| // Creates a Message Port Channel pair. This can be called on any thread. |
| // The returned objects should only be used on the thread they were created on. |
| virtual void createMessageChannel(WebMessagePortChannel** channel1, WebMessagePortChannel** channel2) { *channel1 = 0; *channel2 = 0; } |
| |
| |
| // Network ------------------------------------------------------------- |
| |
| // Returns a new WebURLLoader instance. |
| virtual WebURLLoader* createURLLoader() { return nullptr; } |
| |
| // May return null. |
| virtual WebPrescientNetworking* prescientNetworking() { return nullptr; } |
| |
| // Returns a new WebSocketHandle instance. |
| virtual WebSocketHandle* createWebSocketHandle() { return nullptr; } |
| |
| // Returns the User-Agent string. |
| virtual WebString userAgent() { return WebString(); } |
| |
| // A suggestion to cache this metadata in association with this URL. |
| virtual void cacheMetadata(const WebURL&, int64 responseTime, const char* data, size_t dataSize) { } |
| |
| // Returns the decoded data url if url had a supported mimetype and parsing was successful. |
| virtual WebData parseDataURL(const WebURL&, WebString& mimetype, WebString& charset) { return WebData(); } |
| |
| virtual WebURLError cancelledError(const WebURL&) const { return WebURLError(); } |
| |
| virtual bool isReservedIPAddress(const WebString& host) const { return false; } |
| |
| virtual bool portAllowed(const WebURL&) const { return false; } |
| |
| // Plugins ------------------------------------------------------------- |
| |
| // If refresh is true, then cached information should not be used to |
| // satisfy this call. |
| virtual void getPluginList(bool refresh, WebPluginListBuilder*) { } |
| |
| |
| // Public Suffix List -------------------------------------------------- |
| |
| // May return null on some platforms. |
| virtual WebPublicSuffixList* publicSuffixList() { return nullptr; } |
| |
| |
| // Resources ----------------------------------------------------------- |
| |
| // Returns a localized string resource (with substitution parameters). |
| virtual WebString queryLocalizedString(WebLocalizedString::Name) { return WebString(); } |
| virtual WebString queryLocalizedString(WebLocalizedString::Name, const WebString& parameter) { return WebString(); } |
| virtual WebString queryLocalizedString(WebLocalizedString::Name, const WebString& parameter1, const WebString& parameter2) { return WebString(); } |
| |
| |
| // Threads ------------------------------------------------------- |
| |
| // Creates an embedder-defined thread. |
| virtual WebThread* createThread(const char* name) { return nullptr; } |
| |
| // Returns an interface to the current thread. This is owned by the |
| // embedder. |
| virtual WebThread* currentThread() { return nullptr; } |
| |
| // Yield the current thread so another thread can be scheduled. |
| virtual void yieldCurrentThread() { } |
| |
| // WaitableEvent ------------------------------------------------------- |
| |
| // Creates an embedder-defined waitable event object. |
| WebWaitableEvent* createWaitableEvent() { return createWaitableEvent(WebWaitableEvent::ResetPolicy::Auto, WebWaitableEvent::InitialState::NonSignaled); } |
| virtual WebWaitableEvent* createWaitableEvent(WebWaitableEvent::ResetPolicy, WebWaitableEvent::InitialState) { return nullptr; } |
| |
| // Waits on multiple events and returns the event object that has been |
| // signaled. This may return nullptr if it fails to wait events. |
| // Any event objects given to this method must not deleted while this |
| // wait is happening. |
| virtual WebWaitableEvent* waitMultipleEvents(const WebVector<WebWaitableEvent*>& events) { return nullptr; } |
| |
| |
| // Profiling ----------------------------------------------------------- |
| |
| virtual void decrementStatsCounter(const char* name) { } |
| virtual void incrementStatsCounter(const char* name) { } |
| |
| |
| // Resources ----------------------------------------------------------- |
| |
| // Returns a blob of data corresponding to the named resource. |
| virtual WebData loadResource(const char* name) { return WebData(); } |
| |
| // Decodes the in-memory audio file data and returns the linear PCM audio data in the destinationBus. |
| // A sample-rate conversion to sampleRate will occur if the file data is at a different sample-rate. |
| // Returns true on success. |
| virtual bool loadAudioResource(WebAudioBus* destinationBus, const char* audioFileData, size_t dataSize) { return false; } |
| |
| // Screen ------------------------------------------------------------- |
| |
| // Supplies the system monitor color profile. |
| virtual void screenColorProfile(WebVector<char>* profile) { } |
| |
| |
| // Scrollbar ---------------------------------------------------------- |
| |
| // Must return non-null. |
| virtual WebScrollbarBehavior* scrollbarBehavior() { return nullptr; } |
| |
| |
| // Sudden Termination -------------------------------------------------- |
| |
| // Disable/Enable sudden termination on a process level. When possible, it |
| // is preferable to disable sudden termination on a per-frame level via |
| // WebFrameClient::suddenTerminationDisablerChanged. |
| virtual void suddenTerminationChanged(bool enabled) { } |
| |
| |
| // System -------------------------------------------------------------- |
| |
| // Returns a value such as "en-US". |
| virtual WebString defaultLocale() { return WebString(); } |
| |
| // Wall clock time in seconds since the epoch. |
| virtual double currentTimeSeconds() { return 0; } |
| |
| // Monotonically increasing time in seconds from an arbitrary fixed point in the past. |
| // This function is expected to return at least millisecond-precision values. For this reason, |
| // it is recommended that the fixed point be no further in the past than the epoch. |
| virtual double monotonicallyIncreasingTimeSeconds() { return 0; } |
| |
| // System trace time in seconds. For example, on Chrome OS, this timestamp should be |
| // synchronized with ftrace timestamps. |
| virtual double systemTraceTime() { return 0; } |
| |
| // WebKit clients must implement this funcion if they use cryptographic randomness. |
| virtual void cryptographicallyRandomValues(unsigned char* buffer, size_t length) = 0; |
| |
| // Returns an interface to the main thread. Can be null if blink was initialized on a thread without a message loop. |
| BLINK_PLATFORM_EXPORT WebThread* mainThread() const; |
| |
| // Vibration ----------------------------------------------------------- |
| |
| // Starts a vibration for the given duration in milliseconds. If there is currently an active |
| // vibration it will be cancelled before the new one is started. |
| virtual void vibrate(unsigned time) { } |
| |
| // Cancels the current vibration, if there is one. |
| virtual void cancelVibration() { } |
| |
| |
| // Testing ------------------------------------------------------------- |
| |
| // Get a pointer to testing support interfaces. Will not be available in production builds. |
| virtual WebUnitTestSupport* unitTestSupport() { return nullptr; } |
| |
| |
| // Tracing ------------------------------------------------------------- |
| |
| // Get a pointer to the enabled state of the given trace category. The |
| // embedder can dynamically change the enabled state as trace event |
| // recording is started and stopped by the application. Only long-lived |
| // literal strings should be given as the category name. The implementation |
| // expects the returned pointer to be held permanently in a local static. If |
| // the unsigned char is non-zero, tracing is enabled. If tracing is enabled, |
| // addTraceEvent is expected to be called by the trace event macros. |
| virtual const unsigned char* getTraceCategoryEnabledFlag(const char* categoryName) { return nullptr; } |
| |
| typedef intptr_t TraceEventAPIAtomicWord; |
| |
| // Get a pointer to a global state of the given thread. An embedder is |
| // expected to update the global state as the state of the embedder changes. |
| // A sampling thread in the Chromium side reads the global state periodically |
| // and reflects the sampling profiled results into about:tracing. |
| virtual TraceEventAPIAtomicWord* getTraceSamplingState(const unsigned bucketName) { return nullptr; } |
| |
| typedef uint64_t TraceEventHandle; |
| |
| // Add a trace event to the platform tracing system. Depending on the actual |
| // enabled state, this event may be recorded or dropped. |
| // - phase specifies the type of event: |
| // - BEGIN ('B'): Marks the beginning of a scoped event. |
| // - END ('E'): Marks the end of a scoped event. |
| // - COMPLETE ('X'): Marks the beginning of a scoped event, but doesn't |
| // need a matching END event. Instead, at the end of the scope, |
| // updateTraceEventDuration() must be called with the TraceEventHandle |
| // returned from addTraceEvent(). |
| // - INSTANT ('I'): Standalone, instantaneous event. |
| // - START ('S'): Marks the beginning of an asynchronous event (the end |
| // event can occur in a different scope or thread). The id parameter is |
| // used to match START/FINISH pairs. |
| // - FINISH ('F'): Marks the end of an asynchronous event. |
| // - COUNTER ('C'): Used to trace integer quantities that change over |
| // time. The argument values are expected to be of type int. |
| // - METADATA ('M'): Reserved for internal use. |
| // - categoryEnabled is the pointer returned by getTraceCategoryEnabledFlag. |
| // - name is the name of the event. Also used to match BEGIN/END and |
| // START/FINISH pairs. |
| // - id optionally allows events of the same name to be distinguished from |
| // each other. For example, to trace the consutruction and destruction of |
| // objects, specify the pointer as the id parameter. |
| // - numArgs specifies the number of elements in argNames, argTypes, and |
| // argValues. |
| // - argNames is the array of argument names. Use long-lived literal strings |
| // or specify the COPY flag. |
| // - argTypes is the array of argument types: |
| // - BOOL (1): bool |
| // - UINT (2): unsigned long long |
| // - INT (3): long long |
| // - DOUBLE (4): double |
| // - POINTER (5): void* |
| // - STRING (6): char* (long-lived null-terminated char* string) |
| // - COPY_STRING (7): char* (temporary null-terminated char* string) |
| // - CONVERTABLE (8): WebConvertableToTraceFormat |
| // - argValues is the array of argument values. Each value is the unsigned |
| // long long member of a union of all supported types. |
| // - convertableValues is the array of WebConvertableToTraceFormat classes |
| // that may be converted to trace format by calling asTraceFormat method. |
| // ConvertableToTraceFormat interface. |
| // convertableValues can be moved to another object by |
| // WebConvertableToTraceFormat::moveFrom() in addTraceEvent(), and thus |
| // should not be dereferenced (e.g. asTraceFormat() should not be called) |
| // after return from addTraceEvent(). |
| // - thresholdBeginId optionally specifies the value returned by a previous |
| // call to addTraceEvent with a BEGIN phase. |
| // - threshold is used on an END phase event in conjunction with the |
| // thresholdBeginId of a prior BEGIN event. The threshold is the minimum |
| // number of microseconds that must have passed since the BEGIN event. If |
| // less than threshold microseconds has passed, the BEGIN/END pair is |
| // dropped. |
| // - flags can be 0 or one or more of the following, ORed together: |
| // - COPY (0x1): treat all strings (name, argNames and argValues of type |
| // string) as temporary so that they will be copied by addTraceEvent. |
| // - HAS_ID (0x2): use the id argument to uniquely identify the event for |
| // matching with other events of the same name. |
| // - MANGLE_ID (0x4): specify this flag if the id parameter is the value |
| // of a pointer. |
| virtual TraceEventHandle addTraceEvent( |
| char phase, |
| const unsigned char* categoryEnabledFlag, |
| const char* name, |
| unsigned long long id, |
| unsigned long long bindId, |
| double timestamp, |
| int numArgs, |
| const char** argNames, |
| const unsigned char* argTypes, |
| const unsigned long long* argValues, |
| WebConvertableToTraceFormat* convertableValues, |
| unsigned flags) |
| { |
| return 0; |
| } |
| |
| // Set the duration field of a COMPLETE trace event. |
| virtual void updateTraceEventDuration(const unsigned char* categoryEnabledFlag, const char* name, TraceEventHandle) { } |
| |
| // Callbacks for reporting histogram data. |
| // CustomCounts histogram has exponential bucket sizes, so that min=1, max=1000000, bucketCount=50 would do. |
| virtual void histogramCustomCounts(const char* name, int sample, int min, int max, int bucketCount) { } |
| // Enumeration histogram buckets are linear, boundaryValue should be larger than any possible sample value. |
| virtual void histogramEnumeration(const char* name, int sample, int boundaryValue) { } |
| // Unlike enumeration histograms, sparse histograms only allocate memory for non-empty buckets. |
| virtual void histogramSparse(const char* name, int sample) { } |
| |
| // Record to a RAPPOR privacy-preserving metric, see: https://www.chromium.org/developers/design-documents/rappor. |
| // recordRappor records a sample string, while recordRapporURL records the domain and registry of a url. |
| virtual void recordRappor(const char* metric, const WebString& sample) { } |
| virtual void recordRapporURL(const char* metric, const blink::WebURL& url) { } |
| |
| // Registers a memory dump provider. The WebMemoryDumpProvider::onMemoryDump |
| // method will be called on the same thread that called the |
| // registerMemoryDumpProvider() method. |name| is used for debugging |
| // (duplicates are allowed) and must be a long-lived C string. |
| // See crbug.com/458295 for design docs. |
| virtual void registerMemoryDumpProvider(blink::WebMemoryDumpProvider*, const char* name) { } |
| |
| // Must be called on the thread that called registerMemoryDumpProvider(). |
| virtual void unregisterMemoryDumpProvider(blink::WebMemoryDumpProvider*) { } |
| |
| // Returns a newly allocated WebProcessMemoryDump instance. |
| virtual blink::WebProcessMemoryDump* createProcessMemoryDump() { return nullptr; } |
| |
| typedef uint64_t WebMemoryAllocatorDumpGuid; |
| |
| // Returns guid corresponding to the given string (the hash value) for |
| // creating a WebMemoryAllocatorDump. |
| virtual WebMemoryAllocatorDumpGuid createWebMemoryAllocatorDumpGuid(const WebString& guidStr) { return 0; } |
| |
| // GPU ---------------------------------------------------------------- |
| // |
| // May return null if GPU is not supported. |
| // Returns newly allocated and initialized offscreen WebGraphicsContext3D instance. |
| // Passing an existing context to shareContext will create the new context in the same share group as the passed context. |
| virtual WebGraphicsContext3D* createOffscreenGraphicsContext3D(const WebGraphicsContext3D::Attributes&, WebGraphicsContext3D* shareContext) { return nullptr; } |
| virtual WebGraphicsContext3D* createOffscreenGraphicsContext3D(const WebGraphicsContext3D::Attributes&, WebGraphicsContext3D* shareContext, WebGraphicsContext3D::WebGraphicsInfo* glInfo) { return nullptr; } |
| virtual WebGraphicsContext3D* createOffscreenGraphicsContext3D(const WebGraphicsContext3D::Attributes&) { return nullptr; } |
| |
| // Returns a newly allocated and initialized offscreen context provider. The provider may return a null |
| // graphics context if GPU is not supported. |
| virtual WebGraphicsContext3DProvider* createSharedOffscreenGraphicsContext3DProvider() { return nullptr; } |
| |
| // Returns true if the platform is capable of producing an offscreen context suitable for accelerating 2d canvas. |
| // This will return false if the platform cannot promise that contexts will be preserved across operations like |
| // locking the screen or if the platform cannot provide a context with suitable performance characteristics. |
| // |
| // This value must be checked again after a context loss event as the platform's capabilities may have changed. |
| virtual bool canAccelerate2dCanvas() { return false; } |
| |
| virtual bool isThreadedCompositingEnabled() { return false; } |
| virtual bool isThreadedAnimationEnabled() { return true; } |
| |
| virtual WebCompositorSupport* compositorSupport() { return nullptr; } |
| |
| virtual WebFlingAnimator* createFlingAnimator() { return nullptr; } |
| |
| // Creates a new fling animation curve instance for device |deviceSource| |
| // with |velocity| and already scrolled |cumulativeScroll| pixels. |
| virtual WebGestureCurve* createFlingAnimationCurve(WebGestureDevice deviceSource, const WebFloatPoint& velocity, const WebSize& cumulativeScroll) { return nullptr; } |
| |
| // WebRTC ---------------------------------------------------------- |
| |
| // Creates an WebRTCPeerConnectionHandler for RTCPeerConnection. |
| // May return null if WebRTC functionality is not avaliable or if it's out of resources. |
| virtual WebRTCPeerConnectionHandler* createRTCPeerConnectionHandler(WebRTCPeerConnectionHandlerClient*) { return nullptr; } |
| |
| // Creates an WebMediaRecorderHandler to record MediaStreams. |
| // May return null if the functionality is not available or out of resources. |
| virtual WebMediaRecorderHandler* createMediaRecorderHandler() { return nullptr; } |
| |
| // May return null if WebRTC functionality is not avaliable or out of resources. |
| virtual WebRTCCertificateGenerator* createRTCCertificateGenerator() { return nullptr; } |
| |
| // May return null if WebRTC functionality is not avaliable or out of resources. |
| virtual WebMediaStreamCenter* createMediaStreamCenter(WebMediaStreamCenterClient*) { return nullptr; } |
| |
| // WebWorker ---------------------------------------------------------- |
| |
| virtual void didStartWorkerRunLoop() { } |
| virtual void didStopWorkerRunLoop() { } |
| |
| // WebCrypto ---------------------------------------------------------- |
| |
| virtual WebCrypto* crypto() { return nullptr; } |
| |
| |
| // Platform events ----------------------------------------------------- |
| // Device Orientation, Device Motion, Device Light, Battery, Gamepad. |
| |
| // Request the platform to start listening to the events of the specified |
| // type and notify the given listener (if not null) when there is an update. |
| virtual void startListening(WebPlatformEventType type, WebPlatformEventListener* listener) { } |
| |
| // Request the platform to stop listening to the specified event and no |
| // longer notify the listener, if any. |
| virtual void stopListening(WebPlatformEventType type) { } |
| |
| // This method converts from the supplied DOM code enum to the |
| // embedder's DOM code value for the key pressed. |domCode| values are |
| // based on the value defined in ui/events/keycodes/dom4/keycode_converter_data.h. |
| // Returns null string, if DOM code value is not found. |
| virtual WebString domCodeStringFromEnum(int domCode) { return WebString(); } |
| |
| // This method converts from the suppled DOM code value to the |
| // embedder's DOM code enum for the key pressed. |codeString| is defined in |
| // ui/events/keycodes/dom4/keycode_converter_data.h. |
| // Returns 0, if DOM code enum is not found. |
| virtual int domEnumFromCodeString(const WebString& codeString) { return 0; } |
| |
| // This method converts from the supplied DOM |key| enum to the |
| // corresponding DOM |key| string value for the key pressed. |domKey| values are |
| // based on the value defined in ui/events/keycodes/dom3/dom_key_data.h. |
| // Returns empty string, if DOM key value is not found. |
| virtual WebString domKeyStringFromEnum(int domKey) { return WebString(); } |
| |
| // This method converts from the suppled DOM |key| value to the |
| // embedder's DOM |key| enum for the key pressed. |keyString| is defined in |
| // ui/events/keycodes/dom3/dom_key_data.h. |
| // Returns 0 if DOM key enum is not found. |
| virtual int domKeyEnumFromString(const WebString& keyString) { return 0; } |
| |
| // Quota ----------------------------------------------------------- |
| |
| // Queries the storage partition's storage usage and quota information. |
| // WebStorageQuotaCallbacks::didQueryStorageUsageAndQuota will be called |
| // with the current usage and quota information for the partition. When |
| // an error occurs WebStorageQuotaCallbacks::didFail is called with an |
| // error code. |
| virtual void queryStorageUsageAndQuota( |
| const WebURL& storagePartition, |
| WebStorageQuotaType, |
| WebStorageQuotaCallbacks) { } |
| |
| |
| // WebDatabase -------------------------------------------------------- |
| |
| virtual WebDatabaseObserver* databaseObserver() { return nullptr; } |
| |
| |
| // Web Notifications -------------------------------------------------- |
| |
| virtual WebNotificationManager* notificationManager() { return nullptr; } |
| |
| |
| // Geofencing --------------------------------------------------------- |
| |
| virtual WebGeofencingProvider* geofencingProvider() { return nullptr; } |
| |
| |
| // Push API------------------------------------------------------------ |
| |
| virtual WebPushProvider* pushProvider() { return nullptr; } |
| |
| |
| // navigator.connect -------------------------------------------------- |
| |
| virtual WebNavigatorConnectProvider* navigatorConnectProvider() { return nullptr; } |
| |
| // Returns pointer to a new blink owned WebServicePortProvider instance, |
| // associated with a particular ServicePortCollection (identified by the |
| // WebServicePortProviderClient passed in). |
| virtual WebServicePortProvider* createServicePortProvider(WebServicePortProviderClient*) { return nullptr; } |
| |
| // Permissions -------------------------------------------------------- |
| |
| virtual WebPermissionClient* permissionClient() { return nullptr; } |
| |
| |
| // Background Sync API------------------------------------------------------------ |
| |
| virtual WebSyncProvider* backgroundSyncProvider() { return nullptr; } |
| |
| protected: |
| BLINK_PLATFORM_EXPORT Platform(); |
| virtual ~Platform() { } |
| |
| WebThread* m_mainThread; |
| }; |
| |
| } // namespace blink |
| |
| #endif |
