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// Copyright (c) 2006-2008 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 "chrome/browser/dom_ui/dom_ui.h"
#include "base/json_reader.h"
#include "base/json_writer.h"
#include "chrome/common/l10n_util.h"
///////////////////////////////////////////////////////////////////////////////
// DOMMessageHandler
DOMUI::DOMUI(DOMUIContents* contents) : contents_(contents) {
}
DOMUI::~DOMUI() {
STLDeleteContainerPairSecondPointers(message_callbacks_.begin(),
message_callbacks_.end());
STLDeleteContainerPointers(handlers_.begin(), handlers_.end());
}
// DOMUI, public: -------------------------------------------------------------
void DOMUI::ProcessDOMUIMessage(const std::string& message,
const std::string& content) {
// Look up the callback for this message.
MessageCallbackMap::const_iterator callback =
message_callbacks_.find(message);
if (callback == message_callbacks_.end())
return;
// Convert the content JSON into a Value.
Value* value = NULL;
if (!content.empty()) {
if (!JSONReader::Read(content, &value, false)) {
// The page sent us something that we didn't understand.
// This probably indicates a programming error.
NOTREACHED();
return;
}
}
// Forward this message and content on.
callback->second->Run(value);
delete value;
}
void DOMUI::CallJavascriptFunction(const std::wstring& function_name,
const Value& arg) {
std::string json;
JSONWriter::Write(&arg, false, &json);
std::wstring javascript = function_name + L"(" + UTF8ToWide(json) + L");";
ExecuteJavascript(javascript);
}
void DOMUI::CallJavascriptFunction(
const std::wstring& function_name,
const Value& arg1, const Value& arg2) {
std::string json;
JSONWriter::Write(&arg1, false, &json);
std::wstring javascript = function_name + L"(" + UTF8ToWide(json);
JSONWriter::Write(&arg2, false, &json);
javascript += L"," + UTF8ToWide(json) + L");";
ExecuteJavascript(javascript);
}
void DOMUI::RegisterMessageCallback(const std::string &message,
MessageCallback *callback) {
message_callbacks_.insert(std::make_pair(message, callback));
}
// DOMUI, protected: ----------------------------------------------------------
void DOMUI::AddMessageHandler(DOMMessageHandler* handler) {
handlers_.push_back(handler);
}
// DOMUI, private: ------------------------------------------------------------
void DOMUI::ExecuteJavascript(const std::wstring& javascript) {
DCHECK(contents_);
contents_->render_view_host()->ExecuteJavascriptInWebFrame(std::wstring(),
javascript);
}
///////////////////////////////////////////////////////////////////////////////
// DOMMessageHandler
DOMMessageHandler::DOMMessageHandler(DOMUI *dom_ui) : dom_ui_(dom_ui) {
}
// DOMMessageHandler, protected: ----------------------------------------------
void DOMMessageHandler::SetURLAndTitle(DictionaryValue* dictionary,
std::wstring title,
const GURL& gurl) {
std::wstring wstring_url = UTF8ToWide(gurl.spec());
dictionary->SetString(L"url", wstring_url);
bool using_url_as_the_title = false;
if (title.empty()) {
using_url_as_the_title = true;
title = wstring_url;
}
// Since the title can contain BiDi text, we need to mark the text as either
// RTL or LTR, depending on the characters in the string. If we use the URL
// as the title, we mark the title as LTR since URLs are always treated as
// left to right strings.
std::wstring title_to_set(title);
if (l10n_util::GetTextDirection() == l10n_util::RIGHT_TO_LEFT) {
if (using_url_as_the_title) {
l10n_util::WrapStringWithLTRFormatting(&title_to_set);
} else {
bool success =
l10n_util::AdjustStringForLocaleDirection(title, &title_to_set);
DCHECK(success ? (title != title_to_set) : (title == title_to_set));
}
}
dictionary->SetString(L"title", title_to_set);
}
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