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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/payments/content/payment_request_display_manager.h"
#include "base/check.h"
#include "base/metrics/histogram_functions.h"
#include "components/payments/content/content_payment_request_delegate.h"
namespace payments {
namespace {
// Helper for PaymentRequestDisplayManager::TryShow, to determine the outcome
// given a request to show a `new_delegate` and the `current_handle` for any
// PaymentRequest that is currently showing. If no PaymentRequest is currently
// showing, `current_handle` is nullptr.
PaymentRequestTryShowOutcome GetTryShowOutcome(
base::WeakPtr<ContentPaymentRequestDelegate> new_delegate,
base::WeakPtr<PaymentRequestDisplayManager::DisplayHandle> current_handle) {
if (!new_delegate) {
return PaymentRequestTryShowOutcome::kCannotShowDelegateWasNull;
}
if (!current_handle) {
return PaymentRequestTryShowOutcome::kAbleToShow;
}
// At this point it is not possible to show a new PaymentRequest as there is
// an existing handle, however the function returns various outcomes for
// metric tracking.
base::WeakPtr<ContentPaymentRequestDelegate> current_delegate =
current_handle->delegate();
if (!current_delegate || !current_delegate->GetRenderFrameHost() ||
!new_delegate->GetRenderFrameHost()) {
// It is possible for the current delegate or either of the RenderFrameHosts
// to have become null before the current_handle is cleared (for example, if
// one of the pages is in the middle of navigating away). Such scenarios
// should be rare, so they are collected under a single outcome.
return PaymentRequestTryShowOutcome::kCannotShowUnknownReason;
}
content::RenderFrameHost* current_main_frame =
current_delegate->GetRenderFrameHost()->GetMainFrame();
content::RenderFrameHost* new_main_frame =
new_delegate->GetRenderFrameHost()->GetMainFrame();
return (current_main_frame == new_main_frame)
? PaymentRequestTryShowOutcome::
kCannotShowExistingPaymentRequestSameTab
: PaymentRequestTryShowOutcome::
kCannotShowExistingPaymentRequestDifferentTab;
}
} // namespace
class PaymentRequest;
PaymentRequestDisplayManager::DisplayHandle::DisplayHandle(
base::WeakPtr<PaymentRequestDisplayManager> display_manager,
base::WeakPtr<ContentPaymentRequestDelegate> delegate)
: display_manager_(display_manager), delegate_(delegate) {
if (display_manager_)
display_manager_->set_current_handle(GetWeakPtr());
}
PaymentRequestDisplayManager::DisplayHandle::~DisplayHandle() {
if (display_manager_)
display_manager_->set_current_handle(nullptr);
}
void PaymentRequestDisplayManager::DisplayHandle::Show(
base::WeakPtr<PaymentRequest> request) {
DCHECK(request);
was_shown_ = true;
if (delegate_)
delegate_->ShowDialog(request);
}
void PaymentRequestDisplayManager::DisplayHandle::Retry() {
if (delegate_)
delegate_->RetryDialog();
}
void PaymentRequestDisplayManager::DisplayHandle::DisplayPaymentHandlerWindow(
const GURL& url,
PaymentHandlerOpenWindowCallback callback) {
if (delegate_)
delegate_->EmbedPaymentHandlerWindow(url, std::move(callback));
}
base::WeakPtr<PaymentRequestDisplayManager::DisplayHandle>
PaymentRequestDisplayManager::DisplayHandle::GetWeakPtr() {
return weak_ptr_factory_.GetWeakPtr();
}
PaymentRequestDisplayManager::PaymentRequestDisplayManager()
: current_handle_(nullptr) {}
PaymentRequestDisplayManager::~PaymentRequestDisplayManager() = default;
std::unique_ptr<PaymentRequestDisplayManager::DisplayHandle>
PaymentRequestDisplayManager::TryShow(
base::WeakPtr<ContentPaymentRequestDelegate> delegate) {
// Measure PaymentRequest's ability to show to determine the impact of
// one-PaymentRequest-per-profile; see crbug.com/41427529
PaymentRequestTryShowOutcome outcome =
GetTryShowOutcome(delegate, current_handle_);
base::UmaHistogramEnumeration("PaymentRequest.Show.TryShowOutcome", outcome);
std::unique_ptr<PaymentRequestDisplayManager::DisplayHandle> handle;
if (outcome == PaymentRequestTryShowOutcome::kAbleToShow) {
handle = std::make_unique<PaymentRequestDisplayManager::DisplayHandle>(
GetWeakPtr(), delegate);
}
return handle;
}
void PaymentRequestDisplayManager::ShowPaymentHandlerWindow(
const GURL& url,
PaymentHandlerOpenWindowCallback callback) {
if (current_handle_) {
current_handle_->DisplayPaymentHandlerWindow(url, std::move(callback));
} else {
std::move(callback).Run(false, 0, 0);
}
}
base::WeakPtr<PaymentRequestDisplayManager>
PaymentRequestDisplayManager::GetWeakPtr() {
return weak_ptr_factory_.GetWeakPtr();
}
} // namespace payments
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