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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ppapi/proxy/ppp_instance_proxy.h"
#include <algorithm>
#include "ppapi/c/pp_var.h"
#include "ppapi/c/ppp_instance.h"
#include "ppapi/proxy/host_dispatcher.h"
#include "ppapi/proxy/plugin_dispatcher.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/proxy/ppb_url_loader_proxy.h"
namespace pp {
namespace proxy {
namespace {
PP_Bool DidCreate(PP_Instance instance,
uint32_t argc,
const char* argn[],
const char* argv[]) {
std::vector<std::string> argn_vect;
std::vector<std::string> argv_vect;
for (uint32_t i = 0; i < argc; i++) {
argn_vect.push_back(std::string(argn[i]));
argv_vect.push_back(std::string(argv[i]));
}
PP_Bool result = PP_FALSE;
HostDispatcher::GetForInstance(instance)->Send(
new PpapiMsg_PPPInstance_DidCreate(INTERFACE_ID_PPP_INSTANCE, instance,
argn_vect, argv_vect, &result));
return result;
}
void DidDestroy(PP_Instance instance) {
HostDispatcher::GetForInstance(instance)->Send(
new PpapiMsg_PPPInstance_DidDestroy(INTERFACE_ID_PPP_INSTANCE, instance));
}
void DidChangeView(PP_Instance instance,
const PP_Rect* position,
const PP_Rect* clip) {
HostDispatcher::GetForInstance(instance)->Send(
new PpapiMsg_PPPInstance_DidChangeView(INTERFACE_ID_PPP_INSTANCE,
instance, *position, *clip));
}
void DidChangeFocus(PP_Instance instance, PP_Bool has_focus) {
HostDispatcher::GetForInstance(instance)->Send(
new PpapiMsg_PPPInstance_DidChangeFocus(INTERFACE_ID_PPP_INSTANCE,
instance, has_focus));
}
PP_Bool HandleInputEvent(PP_Instance instance,
const PP_InputEvent* event) {
PP_Bool result = PP_FALSE;
IPC::Message* msg = new PpapiMsg_PPPInstance_HandleInputEvent(
INTERFACE_ID_PPP_INSTANCE, instance, *event, &result);
// Make this message not unblock, to avoid re-entrancy problems when the
// plugin does a synchronous call to the renderer. This will force any
// synchronous calls from the plugin to complete before processing this
// message. We avoid deadlock by never un-setting the unblock flag on messages
// from the plugin to the renderer.
msg->set_unblock(false);
HostDispatcher::GetForInstance(instance)->Send(msg);
return result;
}
PP_Bool HandleDocumentLoad(PP_Instance instance,
PP_Resource url_loader) {
PP_Bool result = PP_FALSE;
HostDispatcher* dispatcher = HostDispatcher::GetForInstance(instance);
// Set up the URLLoader for proxying.
PPB_URLLoader_Proxy* url_loader_proxy = static_cast<PPB_URLLoader_Proxy*>(
dispatcher->GetOrCreatePPBInterfaceProxy(INTERFACE_ID_PPB_URL_LOADER));
url_loader_proxy->PrepareURLLoaderForSendingToPlugin(url_loader);
HostResource serialized_loader;
serialized_loader.SetHostResource(instance, url_loader);
dispatcher->Send(new PpapiMsg_PPPInstance_HandleDocumentLoad(
INTERFACE_ID_PPP_INSTANCE, instance, serialized_loader, &result));
return result;
}
PP_Var GetInstanceObject(PP_Instance instance) {
Dispatcher* dispatcher = HostDispatcher::GetForInstance(instance);
ReceiveSerializedVarReturnValue result;
dispatcher->Send(new PpapiMsg_PPPInstance_GetInstanceObject(
INTERFACE_ID_PPP_INSTANCE, instance, &result));
return result.Return(dispatcher);
}
static const PPP_Instance instance_interface = {
&DidCreate,
&DidDestroy,
&DidChangeView,
&DidChangeFocus,
&HandleInputEvent,
&HandleDocumentLoad,
&GetInstanceObject
};
InterfaceProxy* CreateInstanceProxy(Dispatcher* dispatcher,
const void* target_interface) {
return new PPP_Instance_Proxy(dispatcher, target_interface);
}
} // namespace
PPP_Instance_Proxy::PPP_Instance_Proxy(Dispatcher* dispatcher,
const void* target_interface)
: InterfaceProxy(dispatcher, target_interface) {
}
PPP_Instance_Proxy::~PPP_Instance_Proxy() {
}
// static
const InterfaceProxy::Info* PPP_Instance_Proxy::GetInfo() {
static const Info info = {
&instance_interface,
PPP_INSTANCE_INTERFACE,
INTERFACE_ID_PPP_INSTANCE,
false,
&CreateInstanceProxy,
};
return &info;
}
bool PPP_Instance_Proxy::OnMessageReceived(const IPC::Message& msg) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(PPP_Instance_Proxy, msg)
IPC_MESSAGE_HANDLER(PpapiMsg_PPPInstance_DidCreate,
OnMsgDidCreate)
IPC_MESSAGE_HANDLER(PpapiMsg_PPPInstance_DidDestroy,
OnMsgDidDestroy)
IPC_MESSAGE_HANDLER(PpapiMsg_PPPInstance_DidChangeView,
OnMsgDidChangeView)
IPC_MESSAGE_HANDLER(PpapiMsg_PPPInstance_DidChangeFocus,
OnMsgDidChangeFocus)
IPC_MESSAGE_HANDLER(PpapiMsg_PPPInstance_HandleInputEvent,
OnMsgHandleInputEvent)
IPC_MESSAGE_HANDLER(PpapiMsg_PPPInstance_HandleDocumentLoad,
OnMsgHandleDocumentLoad)
IPC_MESSAGE_HANDLER(PpapiMsg_PPPInstance_GetInstanceObject,
OnMsgGetInstanceObject)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void PPP_Instance_Proxy::OnMsgDidCreate(
PP_Instance instance,
const std::vector<std::string>& argn,
const std::vector<std::string>& argv,
PP_Bool* result) {
*result = PP_FALSE;
if (argn.size() != argv.size())
return;
// Set up the routing associating this new instance with the dispatcher we
// just got the message from. This must be done before calling into the
// plugin so it can in turn call PPAPI functions.
PluginDispatcher* plugin_dispatcher =
static_cast<PluginDispatcher*>(dispatcher());
plugin_dispatcher->DidCreateInstance(instance);
// Make sure the arrays always have at least one element so we can take the
// address below.
std::vector<const char*> argn_array(
std::max(static_cast<size_t>(1), argn.size()));
std::vector<const char*> argv_array(
std::max(static_cast<size_t>(1), argn.size()));
for (size_t i = 0; i < argn.size(); i++) {
argn_array[i] = argn[i].c_str();
argv_array[i] = argv[i].c_str();
}
DCHECK(ppp_instance_target());
*result = ppp_instance_target()->DidCreate(instance,
static_cast<uint32_t>(argn.size()),
&argn_array[0], &argv_array[0]);
if (!*result) {
// In the failure to create case, this plugin instance will be torn down
// without further notification, so we also need to undo the routing.
plugin_dispatcher->DidDestroyInstance(instance);
}
}
void PPP_Instance_Proxy::OnMsgDidDestroy(PP_Instance instance) {
ppp_instance_target()->DidDestroy(instance);
static_cast<PluginDispatcher*>(dispatcher())->DidDestroyInstance(instance);
}
void PPP_Instance_Proxy::OnMsgDidChangeView(PP_Instance instance,
const PP_Rect& position,
const PP_Rect& clip) {
PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance);
if (!dispatcher)
return;
InstanceData* data = dispatcher->GetInstanceData(instance);
if (!data)
return;
data->position = position;
ppp_instance_target()->DidChangeView(instance, &position, &clip);
}
void PPP_Instance_Proxy::OnMsgDidChangeFocus(PP_Instance instance,
PP_Bool has_focus) {
ppp_instance_target()->DidChangeFocus(instance, has_focus);
}
void PPP_Instance_Proxy::OnMsgHandleInputEvent(PP_Instance instance,
const PP_InputEvent& event,
PP_Bool* result) {
*result = ppp_instance_target()->HandleInputEvent(instance, &event);
}
void PPP_Instance_Proxy::OnMsgHandleDocumentLoad(PP_Instance instance,
const HostResource& url_loader,
PP_Bool* result) {
PP_Resource plugin_loader =
PPB_URLLoader_Proxy::TrackPluginResource(url_loader);
*result = ppp_instance_target()->HandleDocumentLoad(
instance, plugin_loader);
}
void PPP_Instance_Proxy::OnMsgGetInstanceObject(
PP_Instance instance,
SerializedVarReturnValue result) {
result.Return(dispatcher(),
ppp_instance_target()->GetInstanceObject(instance));
}
} // namespace proxy
} // namespace pp
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