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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/html_dialog_ui.h"
#include "base/singleton.h"
#include "base/values.h"
#include "chrome/browser/tab_contents/tab_contents.h"
#include "chrome/browser/renderer_host/render_view_host.h"
HtmlDialogUI::HtmlDialogUI(TabContents* tab_contents) : DOMUI(tab_contents) {
}
HtmlDialogUI::~HtmlDialogUI() {
// Don't unregister our property. During the teardown of the TabContents,
// this will be deleted, but the TabContents will already be destroyed.
//
// This object is owned indirectly by the TabContents. DOMUIs can change, so
// it's scary if this DOMUI is changed out and replaced with something else,
// since the property will still point to the old delegate. But the delegate
// is itself the owner of the TabContents for a dialog so will be in scope,
// and the HTML dialogs won't swap DOMUIs anyway since they don't navigate.
}
// static
PropertyAccessor<HtmlDialogUIDelegate*>& HtmlDialogUI::GetPropertyAccessor() {
return *Singleton< PropertyAccessor<HtmlDialogUIDelegate*> >::get();
}
////////////////////////////////////////////////////////////////////////////////
// Private:
// Helper function to read the JSON string from the Value parameter.
static std::string GetJsonResponse(const Value* content) {
if (!content || !content->IsType(Value::TYPE_LIST)) {
NOTREACHED();
return std::string();
}
const ListValue* args = static_cast<const ListValue*>(content);
if (args->GetSize() != 1) {
NOTREACHED();
return std::string();
}
std::string result;
Value* value = NULL;
if (!args->Get(0, &value) || !value->GetAsString(&result)) {
NOTREACHED();
return std::string();
}
return result;
}
void HtmlDialogUI::RenderViewCreated(RenderViewHost* render_view_host) {
// Hook up the javascript function calls, also known as chrome.send("foo")
// calls in the HTML, to the actual C++ functions.
RegisterMessageCallback("DialogClose",
NewCallback(this, &HtmlDialogUI::OnDialogClosed));
// Pass the arguments to the renderer supplied by the delegate.
std::string dialog_args;
std::vector<DOMMessageHandler*> handlers;
HtmlDialogUIDelegate** delegate = GetPropertyAccessor().GetProperty(
tab_contents()->property_bag());
if (delegate) {
dialog_args = (*delegate)->GetDialogArgs();
(*delegate)->GetDOMMessageHandlers(&handlers);
}
render_view_host->SetDOMUIProperty("dialogArguments", dialog_args);
for (std::vector<DOMMessageHandler*>::iterator it = handlers.begin();
it != handlers.end(); ++it) {
(*it)->Attach(this);
AddMessageHandler(*it);
}
}
void HtmlDialogUI::OnDialogClosed(const Value* content) {
HtmlDialogUIDelegate** delegate = GetPropertyAccessor().GetProperty(
tab_contents()->property_bag());
if (delegate)
(*delegate)->OnDialogClosed(GetJsonResponse(content));
}
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