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// Copyright (c) 2010 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.
// Utilities used by the API modules.
#ifndef CEEE_IE_BROKER_API_MODULE_UTIL_H_
#define CEEE_IE_BROKER_API_MODULE_UTIL_H_
#include <string>
#include "toolband.h" //NOLINT
#include "base/json/json_reader.h"
#include "base/json/json_writer.h"
#include "ceee/ie/broker/api_dispatcher.h"
namespace api_module_util {
// Helper function to fetch a list from a JSON string.
bool GetListFromJsonString(const std::string& input_list_args,
scoped_ptr<ListValue>* list);
// Helper function to fetch a list from a JSON string and return its
// first Value. Note that the Value allocation is owned by the list.
// Returns NULL on failures.
Value* GetListAndFirstValue(const std::string& input_list_args,
scoped_ptr<ListValue>* list);
// Helper function to fetch a list from a JSON string and return its
// first Value as an integer. Returns false on failures.
bool GetListAndIntegerValue(const std::string& input_list_args,
scoped_ptr<ListValue>* list,
int* int_value);
// Helper function to fetch a list from a JSON string and return its
// first Value as a DictionaryValue. Note that the DictionaryValue
// allocation is owned by the list. Returns NULL on failures.
DictionaryValue* GetListAndDictionaryValue(const std::string& input_list_args,
scoped_ptr<ListValue>* list);
// Helper function to fetch a list from a JSON string, get its
// first Value as a DictionaryValue and extracts an int from the dict using
// the provided key name. Returns false on failures.
bool GetListAndDictIntValue(const std::string& input_list_args,
const char* dict_value_key_name,
scoped_ptr<ListValue>* list,
int* int_value);
// A function that can be used as a permanent event handler, which converts the
// tab window handle in the input arguments into the corresponding tab ID.
// @tparam tab_id_key_name The key name for the tab ID.
// @param input_args A list of arguments in the form of a JSON string. The first
// argument is a dictionary. It contains the key tab_id_key_name, whose
// corresponding value is the tab window handle.
// @param converted_args On success returns a JSON string, in which the tab
// window handle has been replaced with the actual tab ID; otherwise
// returns input_args.
// @param dispatcher The dispatcher used to query tab IDs using tab window
// handles.
template<const char* tab_id_key_name>
bool ConvertTabIdInDictionary(const std::string& input_args,
std::string* converted_args,
ApiDispatcher* dispatcher) {
if (converted_args == NULL || dispatcher == NULL) {
NOTREACHED();
return false;
}
// Fail safe...
*converted_args = input_args;
scoped_ptr<ListValue> input_list;
DictionaryValue* input_dict = GetListAndDictionaryValue(input_args,
&input_list);
if (input_dict == NULL) {
LOG(ERROR)
<< "Failed to get the details object from the list of arguments.";
return false;
}
int tab_handle = -1;
bool success = input_dict->GetInteger(tab_id_key_name, &tab_handle);
if (!success) {
LOG(ERROR) << "Failed to get " << tab_id_key_name << " property.";
return false;
}
HWND tab_window = reinterpret_cast<HWND>(tab_handle);
int tab_id = kInvalidChromeSessionId;
if (tab_window != INVALID_HANDLE_VALUE) {
tab_id = dispatcher->GetTabIdFromHandle(tab_window);
}
input_dict->SetInteger(tab_id_key_name, tab_id);
base::JSONWriter::Write(input_list.get(), false, converted_args);
return true;
}
} // namespace api_module_util
#endif // CEEE_IE_BROKER_API_MODULE_UTIL_H_
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