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// Copyright (c) 2013 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/extensions_common_resource.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/logging.h"
#include "base/memory/scoped_ptr.h"
#include "base/values.h"
#include "ppapi/c/pp_errors.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/proxy/resource_message_params.h"
#include "ppapi/shared_impl/tracked_callback.h"
#include "ppapi/shared_impl/var_value_conversions.h"
namespace ppapi {
namespace proxy {
ExtensionsCommonResource::ExtensionsCommonResource(Connection connection,
PP_Instance instance)
: PluginResource(connection, instance) {
SendCreate(RENDERER, PpapiHostMsg_ExtensionsCommon_Create());
}
ExtensionsCommonResource::~ExtensionsCommonResource() {
}
thunk::ExtensionsCommon_API*
ExtensionsCommonResource::AsExtensionsCommon_API() {
return this;
}
int32_t ExtensionsCommonResource::Call(
const std::string& request_name,
const std::vector<PP_Var>& input_args,
const std::vector<PP_Var*>& output_args,
scoped_refptr<TrackedCallback> callback) {
// TODO(yzshen): CreateValueFromVar() doesn't generate null fields for
// dictionary values. That is the expected behavior for most APIs. If later we
// want to support APIs that require to preserve null fields in dictionaries,
// we should change the behavior to always preserve null fields at the plugin
// side, and figure out whether they should be stripped at the renderer side.
scoped_ptr<base::ListValue> input_args_value(
CreateListValueFromVarVector(input_args));
if (!input_args_value.get()) {
LOG(WARNING) << "Failed to convert PP_Var input arguments.";
return PP_ERROR_BADARGUMENT;
}
PluginResource::Call<PpapiPluginMsg_ExtensionsCommon_CallReply>(
RENDERER,
PpapiHostMsg_ExtensionsCommon_Call(request_name, *input_args_value),
base::Bind(&ExtensionsCommonResource::OnPluginMsgCallReply,
base::Unretained(this), output_args, callback));
return PP_OK_COMPLETIONPENDING;
}
void ExtensionsCommonResource::Post(const std::string& request_name,
const std::vector<PP_Var>& args) {
scoped_ptr<base::ListValue> args_value(CreateListValueFromVarVector(args));
if (!args_value.get()) {
LOG(WARNING) << "Failed to convert PP_Var input arguments.";
return;
}
PluginResource::Post(
RENDERER, PpapiHostMsg_ExtensionsCommon_Post(request_name, *args_value));
}
void ExtensionsCommonResource::OnPluginMsgCallReply(
const std::vector<PP_Var*>& output_args,
scoped_refptr<TrackedCallback> callback,
const ResourceMessageReplyParams& params,
const base::ListValue& output) {
// |output_args| may be invalid and shouldn't be accessed if the callback has
// been called.
if (!TrackedCallback::IsPending(callback))
return;
int32_t result = params.result();
if (result == PP_OK) {
// If the size doesn't match, something must be really wrong.
CHECK_EQ(output_args.size(), output.GetSize());
std::vector<PP_Var> output_vars;
if (CreateVarVectorFromListValue(output, &output_vars)) {
DCHECK_EQ(output_args.size(), output_vars.size());
std::vector<PP_Var>::const_iterator src_iter = output_vars.begin();
std::vector<PP_Var*>::const_iterator dest_iter = output_args.begin();
for (; src_iter != output_vars.end() && dest_iter != output_args.end();
++src_iter, ++dest_iter) {
**dest_iter = *src_iter;
}
} else {
result = PP_ERROR_FAILED;
}
}
callback->Run(result);
}
} // namespace proxy
} // namespace ppapi
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