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      1 /*
      2  * Copyright 2009, The Android Open Source Project
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *  * Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  *  * Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 // must include config.h first for webkit to fiddle with new/delete
     27 #include "config.h"
     28 #include "SkANP.h"
     29 #include "WebViewCore.h"
     30 #include "PluginView.h"
     31 #include "PluginWidgetAndroid.h"
     32 
     33 #include "JavaSharedClient.h"
     34 
     35 using namespace android;
     36 
     37 struct WrappedANPEvent {
     38     WebViewCore*            fWVC;
     39     PluginWidgetAndroid*    fPWA;
     40     ANPEvent                fEvent;
     41 };
     42 
     43 /*  Its possible we may be called after the plugin that initiated the event
     44     has been torn-down. Thus we check that the assicated webviewcore and
     45     pluginwidget are still active before dispatching the event.
     46  */
     47 static void send_anpevent(void* data) {
     48     WrappedANPEvent* wrapper = static_cast<WrappedANPEvent*>(data);
     49     WebViewCore* core = wrapper->fWVC;
     50     PluginWidgetAndroid* widget = wrapper->fPWA;
     51 
     52     // be sure we're still alive before delivering the event
     53     if (WebViewCore::isInstance(core) && core->isPlugin(widget)) {
     54         widget->sendEvent(wrapper->fEvent);
     55     }
     56     delete wrapper;
     57 }
     58 
     59 static void anp_postEvent(NPP instance, const ANPEvent* event) {
     60     if (instance && instance->ndata && event) {
     61         PluginView* pluginView = static_cast<PluginView*>(instance->ndata);
     62         PluginWidgetAndroid* pluginWidget = pluginView->platformPluginWidget();
     63         WebViewCore* wvc = pluginWidget->webViewCore();
     64 
     65         WrappedANPEvent* wrapper = new WrappedANPEvent;
     66         // recored these, and recheck that they are valid before delivery
     67         // in send_anpevent
     68         wrapper->fWVC = pluginWidget->webViewCore();
     69         wrapper->fPWA = pluginWidget;
     70         // make a copy of the event
     71         wrapper->fEvent = *event;
     72         JavaSharedClient::EnqueueFunctionPtr(send_anpevent, wrapper);
     73     }
     74 }
     75 
     76 ///////////////////////////////////////////////////////////////////////////////
     77 
     78 #define ASSIGN(obj, name)   (obj)->name = anp_##name
     79 
     80 void ANPEventInterfaceV0_Init(ANPInterface* value) {
     81     ANPEventInterfaceV0* i = reinterpret_cast<ANPEventInterfaceV0*>(value);
     82 
     83     ASSIGN(i, postEvent);
     84 }
     85