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// Copyright 2022 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/password_manager/chrome_webauthn_credentials_delegate_factory.h"
#include <memory>
#include "base/containers/flat_map.h"
#include "chrome/browser/password_manager/chrome_webauthn_credentials_delegate.h"
#include "content/public/browser/navigation_handle.h"
#include "content/public/browser/web_contents_observer.h"
#include "content/public/browser/web_contents_user_data.h"
ChromeWebAuthnCredentialsDelegateFactory::
ChromeWebAuthnCredentialsDelegateFactory(content::WebContents* web_contents)
: content::WebContentsObserver(web_contents),
content::WebContentsUserData<ChromeWebAuthnCredentialsDelegateFactory>(
*web_contents) {}
ChromeWebAuthnCredentialsDelegateFactory::
~ChromeWebAuthnCredentialsDelegateFactory() = default;
// static
ChromeWebAuthnCredentialsDelegateFactory*
ChromeWebAuthnCredentialsDelegateFactory::GetFactory(
content::WebContents* web_contents) {
// This does nothing if it already exists.
CreateForWebContents(web_contents);
return FromWebContents(web_contents);
}
ChromeWebAuthnCredentialsDelegate*
ChromeWebAuthnCredentialsDelegateFactory::GetDelegateForFrame(
content::RenderFrameHost* frame_host) {
DCHECK_EQ(web_contents(),
content::WebContents::FromRenderFrameHost(frame_host));
// A RenderFrameHost without a live RenderFrame will never call
// RenderFrameDeleted(), which would leave the new delegate in the map for
// the lifetime of the WebContents.
if (!frame_host->IsRenderFrameLive()) {
return nullptr;
}
auto it = delegate_map_.find(frame_host);
if (it == delegate_map_.end()) {
auto [new_it, inserted] = delegate_map_.try_emplace(
frame_host,
std::make_unique<ChromeWebAuthnCredentialsDelegate>(web_contents()));
it = new_it;
}
return it->second.get();
}
void ChromeWebAuthnCredentialsDelegateFactory::RenderFrameDeleted(
content::RenderFrameHost* frame_host) {
delegate_map_.erase(frame_host);
}
void ChromeWebAuthnCredentialsDelegateFactory::DidFinishNavigation(
content::NavigationHandle* navigation_handle) {
if (navigation_handle->IsSameDocument() ||
!navigation_handle->HasCommitted()) {
return;
}
// A frame navigation loses both autofill and WebAuthn state.
delegate_map_.erase(navigation_handle->GetRenderFrameHost());
}
WEB_CONTENTS_USER_DATA_KEY_IMPL(ChromeWebAuthnCredentialsDelegateFactory);
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