blob: c4767024920ae221c70993243da3f4735ed395dd [file] [log] [blame]
// Copyright (c) 2012 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 "ui/web_dialogs/web_dialog_ui.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/lazy_instance.h"
#include "base/values.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_ui.h"
#include "content/public/browser/web_ui_message_handler.h"
#include "content/public/common/bindings_policy.h"
#include "ui/web_dialogs/web_dialog_delegate.h"
using content::RenderFrameHost;
using content::WebUIMessageHandler;
namespace ui {
namespace {
const char kWebDialogDelegateUserDataKey[] = "WebDialogDelegateUserData";
class WebDialogDelegateUserData : public base::SupportsUserData::Data {
explicit WebDialogDelegateUserData(WebDialogDelegate* delegate)
: delegate_(delegate) {}
~WebDialogDelegateUserData() override {}
WebDialogDelegate* delegate() { return delegate_; }
WebDialogDelegate* delegate_; // unowned
} // namespace
WebDialogUI::WebDialogUI(content::WebUI* web_ui)
: WebUIController(web_ui) {
WebDialogUI::~WebDialogUI() {
// Don't unregister our user data. During the teardown of the WebContents,
// this will be deleted, but the WebContents will already be destroyed.
// This object is owned indirectly by the WebContents. WebUIs can change, so
// it's scary if this WebUI is changed out and replaced with something else,
// since the user data will still point to the old delegate. But the delegate
// is itself the owner of the WebContents for a dialog so will be in scope,
// and the HTML dialogs won't swap WebUIs anyway since they don't navigate.
void WebDialogUI::CloseDialog(const base::ListValue* args) {
// static
void WebDialogUI::SetDelegate(content::WebContents* web_contents,
WebDialogDelegate* delegate) {
new WebDialogDelegateUserData(delegate));
// Private:
WebDialogDelegate* WebDialogUI::GetDelegate(
content::WebContents* web_contents) {
WebDialogDelegateUserData* user_data =
return user_data ? user_data->delegate() : NULL;
void WebDialogUI::RenderFrameCreated(RenderFrameHost* render_frame_host) {
// Hook up the javascript function calls, also known as chrome.send("foo")
// calls in the HTML, to the actual C++ functions.
base::Bind(&WebDialogUI::OnDialogClosed, base::Unretained(this)));
// Pass the arguments to the renderer supplied by the delegate.
std::string dialog_args;
std::vector<WebUIMessageHandler*> handlers;
WebDialogDelegate* delegate = GetDelegate(web_ui()->GetWebContents());
if (delegate) {
dialog_args = delegate->GetDialogArgs();
content::RenderViewHost* render_view_host =
if (0 != (web_ui()->GetBindings() & content::BINDINGS_POLICY_WEB_UI))
render_view_host->SetWebUIProperty("dialogArguments", dialog_args);
for (WebUIMessageHandler* handler : handlers)
if (delegate)
delegate->OnDialogShown(web_ui(), render_view_host);
void WebDialogUI::OnDialogClosed(const base::ListValue* args) {
WebDialogDelegate* delegate = GetDelegate(web_ui()->GetWebContents());
if (delegate) {
std::string json_retval;
if (args && !args->empty() && !args->GetString(0, &json_retval))
NOTREACHED() << "Could not read JSON argument";
} // namespace ui