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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 CHROME_BROWSER_UI_INTENTS_WEB_INTENT_PICKER_CONTROLLER_H_
#define CHROME_BROWSER_UI_INTENTS_WEB_INTENT_PICKER_CONTROLLER_H_
#pragma once
#include <vector>
#include "base/compiler_specific.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/string16.h"
#include "chrome/browser/favicon/favicon_service.h"
#include "chrome/browser/intents/web_intents_registry.h"
#include "chrome/browser/intents/cws_intents_registry.h"
#include "chrome/browser/ui/intents/web_intent_picker_delegate.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
#include "webkit/glue/web_intent_data.h"
#include "webkit/glue/web_intent_reply_data.h"
class Browser;
struct DefaultWebIntentService;
class GURL;
class TabContentsWrapper;
class WebIntentPicker;
class WebIntentPickerModel;
namespace content {
class WebContents;
class WebIntentsDispatcher;
}
namespace webkit_glue {
struct WebIntentServiceData;
}
// Controls the creation of the WebIntentPicker UI and forwards the user's
// intent handler choice back to the TabContents object.
class WebIntentPickerController : public content::NotificationObserver,
public WebIntentPickerDelegate,
public WebIntentsRegistry::Consumer {
public:
// Takes ownership of |factory|.
explicit WebIntentPickerController(TabContentsWrapper* wrapper);
virtual ~WebIntentPickerController();
// Sets the intent data and return pathway handler object for which
// this picker was created. The picker takes ownership of
// |intents_dispatcher|. |intents_dispatcher| must not be NULL.
void SetIntentsDispatcher(content::WebIntentsDispatcher* intents_dispatcher);
// Shows the web intent picker for |browser|, given the intent
// |action| and MIME-type |type|.
void ShowDialog(Browser* browser,
const string16& action,
const string16& type);
protected:
// content::NotificationObserver implementation.
virtual void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) OVERRIDE;
// WebIntentPickerDelegate implementation.
virtual void OnServiceChosen(size_t index, Disposition disposition) OVERRIDE;
virtual void OnInlineDispositionWebContentsCreated(
content::WebContents* web_contents) OVERRIDE;
virtual void OnCancelled() OVERRIDE;
virtual void OnClosing() OVERRIDE;
private:
friend class WebIntentPickerControllerTest;
friend class WebIntentPickerControllerBrowserTest;
friend class InvokingTabObserver;
// Gets a notification when the return message is sent to the source tab,
// so we can close the picker dialog or service tab.
void OnSendReturnMessage(webkit_glue::WebIntentReplyType reply_type);
// Exposed for tests only.
void set_picker(WebIntentPicker* picker) { picker_ = picker; }
// Exposed for tests only.
void set_model_observer(WebIntentPickerModelObserver* observer) {
picker_model_->set_observer(observer);
}
// Called when WebIntentServiceData is returned from the WebIntentsRegistry.
virtual void OnIntentsQueryDone(
WebIntentsRegistry::QueryID,
const std::vector<webkit_glue::WebIntentServiceData>& services) OVERRIDE;
// Called when the WebIntentsRegistry returns responses to a defaults request.
virtual void OnIntentsDefaultsQueryDone(
WebIntentsRegistry::QueryID,
const DefaultWebIntentService& default_service) OVERRIDE;
// Called when FaviconData is returned from the FaviconService.
void OnFaviconDataAvailable(FaviconService::Handle handle,
history::FaviconData favicon_data);
// Called when IntentExtensionInfo is returned from the CWSIntentsRegistry.
void OnCWSIntentServicesAvailable(
const CWSIntentsRegistry::IntentExtensionList& extensions);
// Called when a suggested extension's icon is fetched.
void OnExtensionIconURLFetchComplete(const string16& extension_id,
const content::URLFetcher* source);
typedef base::Callback<void(const gfx::Image&)>
ExtensionIconAvailableCallback;
// Called on a worker thread to decode and resize the extension's icon.
static void DecodeExtensionIconAndResize(
scoped_ptr<std::string> icon_response,
const ExtensionIconAvailableCallback& callback,
const base::Closure& unavailable_callback);
// Called when an extension's icon is successfully decoded and resized.
void OnExtensionIconAvailable(const string16& extension_id,
const gfx::Image& icon_image);
// Called when an extension's icon failed to be decoded or resized.
void OnExtensionIconUnavailable(const string16& extension_id);
// Decrements the |pending_async_count_| and notifies the picker if it
// reaches zero.
void AsyncOperationFinished();
// Closes the currently active picker.
void ClosePicker();
// A weak pointer to the tab contents that the picker is displayed on.
TabContentsWrapper* wrapper_;
// A notification registrar, listening for notifications when the tab closes
// to close the picker ui.
content::NotificationRegistrar registrar_;
// A weak pointer to the picker this controller controls.
WebIntentPicker* picker_;
// The model for the picker. Owned by this controller. It should not be NULL
// while this controller exists, even if the picker is not shown.
scoped_ptr<WebIntentPickerModel> picker_model_;
// A count of the outstanding asynchronous calls.
int pending_async_count_;
// Is true if the picker is currently visible.
// This bool is not equivalent to picker != NULL in a unit test. In that
// case, a picker may be non-NULL before it is shown.
bool picker_shown_;
// Weak pointer to the routing object for the renderer which launched the
// intent. Contains the intent data and a way to signal back to the
// client page.
content::WebIntentsDispatcher* intents_dispatcher_;
// Weak pointer to the tab servicing the intent. Remembered in order to
// close it when a reply is sent.
content::WebContents* service_tab_;
// Request consumer used when asynchronously loading favicons.
CancelableRequestConsumerTSimple<size_t> favicon_consumer_;
base::WeakPtrFactory<WebIntentPickerController> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(WebIntentPickerController);
};
#endif // CHROME_BROWSER_UI_INTENTS_WEB_INTENT_PICKER_CONTROLLER_H_
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