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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/webui/privacy_sandbox/base_dialog_handler.h"
#include "chrome/browser/ui/webui/privacy_sandbox/base_dialog_ui.h"
namespace privacy_sandbox {
using dialog::mojom::BaseDialogPage;
using dialog::mojom::BaseDialogPageHandler;
using notice::mojom::PrivacySandboxNotice;
using enum notice::mojom::PrivacySandboxNotice;
using notice::mojom::PrivacySandboxNoticeEvent;
BaseDialogHandler::BaseDialogHandler(
mojo::PendingReceiver<BaseDialogPageHandler> receiver,
mojo::PendingRemote<BaseDialogPage> page,
DesktopViewManagerInterface* view_manager,
BaseDialogUIDelegate* delegate)
: receiver_(this, std::move(receiver)),
page_(std::move(page)),
delegate_(delegate),
view_manager_(view_manager) {
CHECK(view_manager_);
desktop_view_manager_observation_.Observe(view_manager_);
}
BaseDialogHandler::~BaseDialogHandler() = default;
void BaseDialogHandler::ResizeDialog(uint32_t height) {
if (!delegate_) {
return;
}
CHECK(!has_resized);
delegate_->ResizeNativeView(height);
has_resized = true;
}
void BaseDialogHandler::ShowDialog() {
if (!delegate_) {
return;
}
// A callback is passed to the delegate to ensure it is invoked only once the
// PrivacySandboxDialogView confirms it's fully visible. This is crucial to
// accurately track the dialog's 'shown' state.
delegate_->ShowNativeView(
base::BindOnce(&BaseDialogHandler::NativeDialogShownCallback,
weak_ptr_factory_.GetWeakPtr()));
}
// Handles specific settings-related events by delegating to the appropriate
// Privacy Sandbox settings page opening method.
void BaseDialogHandler::HandleSettingsEvent(PrivacySandboxNotice notice) {
if (!delegate_) {
return;
}
switch (notice) {
case kProtectedAudienceMeasurementNotice:
case kThreeAdsApisNotice:
delegate_->OpenPrivacySandboxSettings();
break;
case kMeasurementNotice:
delegate_->OpenPrivacySandboxAdMeasurementSettings();
break;
default:
break;
}
}
// Dispatches an event to the View Manager.
// This is a helper for EventOccurred and NativeDialogShownCallback to
// centralize event handling logic.
void BaseDialogHandler::DispatchEvent(PrivacySandboxNotice notice,
PrivacySandboxNoticeEvent event) {
if (event == PrivacySandboxNoticeEvent::kSettings) {
HandleSettingsEvent(notice);
}
view_manager_->OnEventOccurred(notice, event);
}
// Events are either sent to the view manager immediately if the dialog is
// already confirmed as visible, or if no delegate exists (implying the event
// should not wait for visibility confirmation). Otherwise, events are queued to
// ensure they are processed only after the dialog's 'shown' state is confirmed.
void BaseDialogHandler::EventOccurred(PrivacySandboxNotice notice,
PrivacySandboxNoticeEvent event) {
if (native_dialog_shown_ || !delegate_) {
DispatchEvent(notice, event);
} else {
events_queue_.push({notice, event});
}
}
// Callback invoked by PrivacySandboxDialogView once the dialog is confirmed
// as visible. This function updates the handler's internal 'shown' state
// and dispatches any events that were queued prior to the dialog being visible
// in the correct order.
void BaseDialogHandler::NativeDialogShownCallback() {
native_dialog_shown_ = true;
for (; !events_queue_.empty(); events_queue_.pop()) {
auto [notice, event] = events_queue_.front();
DispatchEvent(notice, event);
}
}
void BaseDialogHandler::MaybeNavigateToNextStep(
std::optional<PrivacySandboxNotice> next_id) {
if (!delegate_) {
return;
}
if (!next_id) {
delegate_->CloseNativeView();
} else {
page_->NavigateToNextStep(*next_id);
delegate_->SetPrivacySandboxNotice(*next_id);
}
}
bool BaseDialogHandler::IsNativeDialogShownForTesting() {
return native_dialog_shown_;
}
BrowserWindowInterface* BaseDialogHandler::GetBrowser() {
return delegate_->GetBrowser();
}
} // namespace privacy_sandbox
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