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// Copyright 2017 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 COMPONENTS_PAYMENTS_PAYMENT_REQUEST_WEB_CONTENTS_MANAGER_H_
#define COMPONENTS_PAYMENTS_PAYMENT_REQUEST_WEB_CONTENTS_MANAGER_H_
#include <map>
#include <memory>
#include "base/macros.h"
#include "components/payments/content/payment_request.h"
#include "content/public/browser/web_contents_observer.h"
#include "content/public/browser/web_contents_user_data.h"
#include "mojo/public/cpp/bindings/binding.h"
#include "third_party/WebKit/public/platform/modules/payments/payment_request.mojom.h"
namespace content {
class RenderFrameHost;
class NavigationHandle;
class WebContents;
} // namespace content
namespace payments {
class PaymentRequestDelegate;
// This class owns the PaymentRequest associated with a given WebContents.
//
// Responsible for creating PaymentRequest's and retaining ownership. No request
// pointers are currently available because the request manages its interactions
// with UI and renderer. The PaymentRequest may call DestroyRequest() to signal
// it is ready to die. Otherwise it gets destroyed when the WebContents (thus
// this class) goes away.
class PaymentRequestWebContentsManager
: public content::WebContentsObserver,
public content::WebContentsUserData<PaymentRequestWebContentsManager> {
public:
~PaymentRequestWebContentsManager() override;
// Retrieves the instance of PaymentRequestWebContentsManager that was
// attached to the specified WebContents. If no instance was attached,
// creates one, and attaches it to the specified WebContents.
static PaymentRequestWebContentsManager* GetOrCreateForWebContents(
content::WebContents* web_contents);
// Creates the PaymentRequest that will interact with this |render_frame_host|
// and the associated |web_contents|.
void CreatePaymentRequest(
content::RenderFrameHost* render_frame_host,
content::WebContents* web_contents,
std::unique_ptr<PaymentRequestDelegate> delegate,
mojo::InterfaceRequest<payments::mojom::PaymentRequest> request,
PaymentRequest::ObserverForTest* observer_for_testing);
// Destroys the given |request|.
void DestroyRequest(PaymentRequest* request);
// Called when |request| has received the show() call. If the |request| can be
// shown, then returns true and assumes that |request| is now showing until
// DestroyRequest(|request|) is called with the same pointer. (Only one
// request at a time can be shown per tab.)
bool CanShow(PaymentRequest* request);
// WebContentsObserver::
void DidStartNavigation(
content::NavigationHandle* navigation_handle) override;
private:
explicit PaymentRequestWebContentsManager(content::WebContents* web_contents);
friend class content::WebContentsUserData<PaymentRequestWebContentsManager>;
friend class PaymentRequestBrowserTestBase;
// Owns all the PaymentRequest for this WebContents. Since the
// PaymentRequestWebContentsManager's lifetime is tied to the WebContents,
// these requests only get destroyed when the WebContents goes away, or when
// the requests themselves call DestroyRequest().
std::map<PaymentRequest*, std::unique_ptr<PaymentRequest>> payment_requests_;
// The currently displayed instance of PaymentRequest. Points to one of the
// elements in |payment_requests_|. Can be null.
PaymentRequest* showing_;
DISALLOW_COPY_AND_ASSIGN(PaymentRequestWebContentsManager);
};
} // namespace payments
#endif // COMPONENTS_PAYMENTS_PAYMENT_REQUEST_WEB_CONTENTS_MANAGER_H_
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