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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 CONTENT_PUBLIC_BROWSER_WEB_INTENTS_DISPATCHER_H_
#define CONTENT_PUBLIC_BROWSER_WEB_INTENTS_DISPATCHER_H_
#include "base/callback.h"
#include "content/common/content_export.h"
#include "webkit/glue/web_intent_reply_data.h"
namespace webkit_glue {
enum WebIntentReplyType;
struct WebIntentData;
struct WebIntentReply;
}
namespace content {
class WebContents;
class WebContentsDelegate;
// This class is the coordinator for dispatching web intents and seeing that
// return messages are sent to the correct invoking context. The WebContents
// for the invoking context will create one of these for each intent and hand
// a pointer to the client WebContentsDelegate code. The WebContentsDelegate
// code can then read the intent data, create UI to pick the service, and
// create a new context for that service.
//
// At that point, it should call DispatchIntent, which will deliver the intent
// to the new context. If anything goes wrong during setup, the client
// should call SendReplyMessage with an error. The dispatcher lives until the
// SendReplyMessage method is called, which will self-delete the object.
//
// The client should also register a reply notification, so it can avoid
// referencing the dispatcher after other code calls SendReplyMessage, which can
// happen if, for example, the user closes the delivery context.
class CONTENT_EXPORT WebIntentsDispatcher {
public:
// This callback type is registered for notification of |SendReplyMessage|.
typedef base::Callback<void(webkit_glue::WebIntentReplyType)>
ReplyNotification;
// Create internal (browser-triggered) intent. This will create
// a new dispatcher with the passed intent payload |data|. The caller should
// manage dispatching it correctly.
static WebIntentsDispatcher* Create(const webkit_glue::WebIntentData& data);
virtual ~WebIntentsDispatcher() {}
// Get the intent data being dispatched.
virtual const webkit_glue::WebIntentData& GetIntent() = 0;
// Attach the intent to a new context in which the service page is loaded.
// |web_contents| must not be NULL.
virtual void DispatchIntent(WebContents* web_contents) = 0;
// Abandon current attempt to dispatch, allow new call to DispatchIntent.
virtual void ResetDispatch() = 0;
// Deprecated. Use SendReply.
virtual void SendReplyMessage(webkit_glue::WebIntentReplyType reply_type,
const string16& data) = 0;
// Return a reply to the source context which invoked the intent.
// Calls the reply notifications, if any are registered.
// Deletes |this| object after handling is complete.
virtual void SendReply(const webkit_glue::WebIntentReply& reply) = 0;
// Register a callback to be notified when SendReplyMessage is called.
// Multiple callbacks may be registered.
virtual void RegisterReplyNotification(const ReplyNotification& closure) = 0;
};
} // namespace content
#endif // CONTENT_PUBLIC_BROWSER_WEB_INTENTS_DISPATCHER_H_
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