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Diffstat (limited to 'WebKit/chromium/src/WebBindings.cpp')
| -rw-r--r-- | WebKit/chromium/src/WebBindings.cpp | 323 |
1 files changed, 323 insertions, 0 deletions
diff --git a/WebKit/chromium/src/WebBindings.cpp b/WebKit/chromium/src/WebBindings.cpp new file mode 100644 index 0000000..0bc67b6 --- /dev/null +++ b/WebKit/chromium/src/WebBindings.cpp @@ -0,0 +1,323 @@ +/* + * Copyright (C) 2009 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. + */ + +#include "config.h" +#include "WebBindings.h" + +#include "npruntime_impl.h" +#include "npruntime_priv.h" + +#include "../public/WebDragData.h" +#include "../public/WebRange.h" + +#if USE(V8) +#include "ChromiumDataObject.h" +#include "ClipboardChromium.h" +#include "EventNames.h" +#include "MouseEvent.h" +#include "NPV8Object.h" // for PrivateIdentifier +#include "Range.h" +#include "V8DOMWrapper.h" +#include "V8Helpers.h" +#include "V8Proxy.h" +#elif USE(JSC) +#include "bridge/c/c_utility.h" +#endif + +#if USE(JAVASCRIPTCORE_BINDINGS) +using JSC::Bindings::PrivateIdentifier; +#endif + +using namespace WebCore; + +namespace WebKit { + +bool WebBindings::construct(NPP npp, NPObject *npobj, const NPVariant *args, uint32_t argCount, NPVariant* result) +{ + return _NPN_Construct(npp, npobj, args, argCount, result); +} + +NPObject* WebBindings::createObject(NPP npp, NPClass* npClass) +{ + return _NPN_CreateObject(npp, npClass); +} + +bool WebBindings::enumerate(NPP id, NPObject* obj, NPIdentifier** identifier, uint32_t* val) +{ + return _NPN_Enumerate(id, obj, identifier, val); +} + +bool WebBindings::evaluate(NPP npp, NPObject* npObject, NPString* npScript, NPVariant* result) +{ + return _NPN_Evaluate(npp, npObject, npScript, result); +} + +bool WebBindings::evaluateHelper(NPP npp, bool popups_allowed, NPObject* npobj, NPString* npscript, NPVariant* result) +{ + return _NPN_EvaluateHelper(npp, popups_allowed, npobj, npscript, result); +} + +NPIdentifier WebBindings::getIntIdentifier(int32_t number) +{ + return _NPN_GetIntIdentifier(number); +} + +bool WebBindings::getProperty(NPP npp, NPObject* obj, NPIdentifier propertyName, NPVariant *result) +{ + return _NPN_GetProperty(npp, obj, propertyName, result); +} + +NPIdentifier WebBindings::getStringIdentifier(const NPUTF8* string) +{ + return _NPN_GetStringIdentifier(string); +} + +void WebBindings::getStringIdentifiers(const NPUTF8** names, int32_t nameCount, NPIdentifier* identifiers) +{ + _NPN_GetStringIdentifiers(names, nameCount, identifiers); +} + +bool WebBindings::hasMethod(NPP npp, NPObject* npObject, NPIdentifier methodName) +{ + return _NPN_HasMethod(npp, npObject, methodName); +} + +bool WebBindings::hasProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName) +{ + return _NPN_HasProperty(npp, npObject, propertyName); +} + +bool WebBindings::identifierIsString(NPIdentifier identifier) +{ + return _NPN_IdentifierIsString(identifier); +} + +int32_t WebBindings::intFromIdentifier(NPIdentifier identifier) +{ + return _NPN_IntFromIdentifier(identifier); +} + +void WebBindings::initializeVariantWithStringCopy(NPVariant* variant, const NPString* value) +{ +#if USE(V8) + _NPN_InitializeVariantWithStringCopy(variant, value); +#else + NPN_InitializeVariantWithStringCopy(variant, value); +#endif +} + +bool WebBindings::invoke(NPP npp, NPObject* npObject, NPIdentifier methodName, const NPVariant* arguments, uint32_t argumentCount, NPVariant* result) +{ + return _NPN_Invoke(npp, npObject, methodName, arguments, argumentCount, result); +} + +bool WebBindings::invokeDefault(NPP id, NPObject* obj, const NPVariant* args, uint32_t count, NPVariant* result) +{ + return _NPN_InvokeDefault(id, obj, args, count, result); +} + +void WebBindings::releaseObject(NPObject* npObject) +{ + return _NPN_ReleaseObject(npObject); +} + +void WebBindings::releaseVariantValue(NPVariant* variant) +{ + _NPN_ReleaseVariantValue(variant); +} + +bool WebBindings::removeProperty(NPP id, NPObject* object, NPIdentifier identifier) +{ + return _NPN_RemoveProperty(id, object, identifier); +} + +NPObject* WebBindings::retainObject(NPObject* npObject) +{ + return _NPN_RetainObject(npObject); +} + +void WebBindings::setException(NPObject* obj, const NPUTF8* message) +{ + _NPN_SetException(obj, message); +} + +bool WebBindings::setProperty(NPP id, NPObject* obj, NPIdentifier identifier, const NPVariant* variant) +{ + return _NPN_SetProperty(id, obj, identifier, variant); +} + +void WebBindings::unregisterObject(NPObject* npObject) +{ +#if USE(V8) + _NPN_UnregisterObject(npObject); +#endif +} + +NPUTF8* WebBindings::utf8FromIdentifier(NPIdentifier identifier) +{ + return _NPN_UTF8FromIdentifier(identifier); +} + +void WebBindings::extractIdentifierData(const NPIdentifier& identifier, const NPUTF8*& string, int32_t& number, bool& isString) +{ + PrivateIdentifier* priv = static_cast<PrivateIdentifier*>(identifier); + if (!priv) { + isString = false; + number = 0; + return; + } + + isString = priv->isString; + if (isString) + string = priv->value.string; + else + number = priv->value.number; +} + +#if USE(V8) + +static v8::Local<v8::Value> getEvent(const v8::Handle<v8::Context>& context) +{ + static v8::Persistent<v8::String> eventSymbol(v8::Persistent<v8::String>::New(v8::String::NewSymbol("event"))); + return context->Global()->GetHiddenValue(eventSymbol); +} + +static bool getDragDataImpl(NPObject* npobj, int* eventId, WebDragData* data) +{ + if (!npobj) + return false; + if (npobj->_class != npScriptObjectClass) + return false; + + v8::HandleScope handleScope; + v8::Handle<v8::Context> context = v8::Context::GetEntered(); + if (context.IsEmpty()) + return false; + + // Get the current WebCore event. + v8::Handle<v8::Value> currentEvent(getEvent(context)); + Event* event = V8DOMWrapper::convertToNativeEvent(currentEvent); + if (!event) + return false; + + // Check that the given npobj is that event. + V8NPObject* object = reinterpret_cast<V8NPObject*>(npobj); + Event* given = V8DOMWrapper::convertToNativeEvent(object->v8Object); + if (given != event) + return false; + + // Check the execution frames are same origin. + V8Proxy* current = V8Proxy::retrieve(V8Proxy::retrieveFrameForCurrentContext()); + Frame* frame = V8Proxy::retrieveFrame(context); + if (!current || !current->canAccessFrame(frame, false)) + return false; + + const EventNames& names(eventNames()); + const AtomicString& eventType(event->type()); + + enum DragTargetMouseEventId { + DragEnterId = 1, DragOverId = 2, DragLeaveId = 3, DropId = 4 + }; + + // The event type should be a drag event. + if (eventType == names.dragenterEvent) + *eventId = DragEnterId; + else if (eventType == names.dragoverEvent) + *eventId = DragOverId; + else if (eventType == names.dragleaveEvent) + *eventId = DragLeaveId; + else if (eventType == names.dropEvent) + *eventId = DropId; + else + return false; + + // Drag events are mouse events and should have a clipboard. + MouseEvent* me = static_cast<MouseEvent*>(event); + Clipboard* clipboard = me->clipboard(); + if (!clipboard) + return false; + + // And that clipboard should be accessible by WebKit policy. + ClipboardChromium* chrome = static_cast<ClipboardChromium*>(clipboard); + HashSet<String> accessible(chrome->types()); + if (accessible.isEmpty()) + return false; + + RefPtr<ChromiumDataObject> dataObject(chrome->dataObject()); + if (dataObject && data) + *data = WebDragData(dataObject); + + return dataObject; +} + +static bool getRangeImpl(NPObject* npobj, WebRange* range) +{ + V8NPObject* v8npobject = reinterpret_cast<V8NPObject*>(npobj); + v8::Handle<v8::Object> v8object(v8npobject->v8Object); + if (V8ClassIndex::RANGE != V8DOMWrapper::domWrapperType(v8object)) + return false; + + Range* native = V8DOMWrapper::convertToNativeObject<WebCore::Range>(V8ClassIndex::RANGE, v8object); + if (!native) + return false; + + *range = WebRange(native); + return true; +} + +#endif + +bool WebBindings::getDragData(NPObject* event, int* eventId, WebDragData* data) +{ +#if USE(V8) + return getDragDataImpl(event, eventId, data); +#else + // Not supported on other ports (JSC, etc). + return false; +#endif +} + +bool WebBindings::isDragEvent(NPObject* event) +{ + int eventId; + return getDragData(event, &eventId, 0); +} + +bool WebBindings::getRange(NPObject* range, WebRange* webrange) +{ +#if USE(V8) + return getRangeImpl(range, webrange); +#else + // Not supported on other ports (JSC, etc). + return false; +#endif +} + +} // namespace WebKit |