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// 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.
#ifndef UI_WEB_DIALOGS_WEB_DIALOG_UI_H_
#define UI_WEB_DIALOGS_WEB_DIALOG_UI_H_
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "content/public/browser/web_contents_delegate.h"
#include "content/public/browser/web_ui_controller.h"
#include "ui/base/ui_base_types.h"
#include "ui/web_dialogs/web_dialogs_export.h"
#include "ui/webui/mojo_web_ui_controller.h"
#include "url/gurl.h"
namespace content {
class WebContents;
}
namespace ui {
class WebDialogDelegate;
class WEB_DIALOGS_EXPORT WebDialogUIBase {
public:
// Sets the delegate on the WebContents.
static void SetDelegate(content::WebContents* web_contents,
WebDialogDelegate* delegate);
WebDialogUIBase(content::WebUI* web_ui);
// Close the dialog, passing the specified arguments to the close handler.
void CloseDialog(const base::ListValue* args);
protected:
virtual ~WebDialogUIBase();
// Prepares |render_frame_host| to host a dialog.
void HandleRenderFrameCreated(content::RenderFrameHost* render_frame_host);
private:
// Gets the delegate for the WebContent set with SetDelegate.
static WebDialogDelegate* GetDelegate(content::WebContents* web_contents);
// JS message handler.
void OnDialogClosed(const base::ListValue* args);
content::WebUI* web_ui_;
DISALLOW_COPY_AND_ASSIGN(WebDialogUIBase);
};
// Displays file URL contents inside a modal web dialog.
//
// This application really should not use WebContents + WebUI. It should instead
// just embed a RenderView in a dialog and be done with it.
//
// Before loading a URL corresponding to this WebUI, the caller should set its
// delegate as user data on the WebContents by calling SetDelegate(). This WebUI
// will pick it up from there and call it back. This is a bit of a hack to allow
// the dialog to pass its delegate to the Web UI without having nasty accessors
// on the WebContents. The correct design using RVH directly would avoid all of
// this.
class WEB_DIALOGS_EXPORT WebDialogUI : public WebDialogUIBase,
public content::WebUIController {
public:
// When created, the delegate should already be set as user data on the
// WebContents.
explicit WebDialogUI(content::WebUI* web_ui);
~WebDialogUI() override;
WebDialogUI(const WebDialogUI&) = delete;
WebDialogUI& operator=(const WebDialogUI&) = delete;
private:
// content::WebUIController:
void WebUIRenderFrameCreated(
content::RenderFrameHost* render_frame_host) override;
};
// Displays file URL contents inside a modal web dialog while also enabling
// Mojo calls to be made from within the dialog.
class WEB_DIALOGS_EXPORT MojoWebDialogUI : public WebDialogUIBase,
public MojoWebUIController {
public:
// When created, the delegate should already be set as user data on the
// WebContents.
explicit MojoWebDialogUI(content::WebUI* web_ui);
~MojoWebDialogUI() override;
MojoWebDialogUI(const MojoWebDialogUI&) = delete;
MojoWebDialogUI& operator=(const MojoWebDialogUI&) = delete;
private:
// content::WebUIController:
void WebUIRenderFrameCreated(
content::RenderFrameHost* render_frame_host) override;
};
} // namespace ui
#endif // UI_WEB_DIALOGS_WEB_DIALOG_UI_H_