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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 "components/guest_contents/browser/guest_contents_handle.h"
#include <map>
#include "base/no_destructor.h"
#include "content/public/browser/unowned_inner_web_contents_client.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_contents_observer.h"
#include "content/public/browser/web_contents_user_data.h"
namespace guest_contents {
namespace {
std::map<GuestId, GuestContentsHandle*>& GetGuestContentsMap() {
static base::NoDestructor<std::map<GuestId, GuestContentsHandle*>>
guest_contents_map;
return *guest_contents_map;
}
} // namespace
// static
GuestContentsHandle* GuestContentsHandle::CreateForWebContents(
content::WebContents* web_contents) {
content::WebContentsUserData<GuestContentsHandle>::CreateForWebContents(
web_contents);
return FromWebContents(web_contents);
}
// static
GuestContentsHandle* GuestContentsHandle::FromID(GuestId id) {
return GetGuestContentsMap().contains(id) ? GetGuestContentsMap()[id]
: nullptr;
}
GuestContentsHandle::GuestContentsHandle(content::WebContents* web_contents)
: content::WebContentsUserData<GuestContentsHandle>(*web_contents),
content::WebContentsObserver(web_contents),
id_(GetNextId()) {
CHECK(!GetGuestContentsMap().contains(id_));
GetGuestContentsMap()[id_] = this;
}
GuestContentsHandle::~GuestContentsHandle() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
GetGuestContentsMap().erase(id_);
}
void GuestContentsHandle::AttachToOuterWebContents(
content::RenderFrameHost* outer_delegate_frame) {
content::WebContents* outer_web_contents =
content::WebContents::FromRenderFrameHost(outer_delegate_frame);
CHECK(outer_web_contents);
outer_web_contents->AttachUnownedInnerWebContents(
content::UnownedInnerWebContentsClient::GetPassKey(), web_contents(),
outer_delegate_frame);
}
void GuestContentsHandle::DetachFromOuterWebContents() {
content::WebContents* outer_web_contents =
web_contents()->GetOuterWebContents();
if (!outer_web_contents) {
return;
}
outer_web_contents->DetachUnownedInnerWebContents(
content::UnownedInnerWebContentsClient::GetPassKey(), web_contents());
}
void GuestContentsHandle::WebContentsDestroyed() {
DetachFromOuterWebContents();
}
GuestId GuestContentsHandle::GetNextId() {
static GuestId next_id = 0;
return next_id++;
}
WEB_CONTENTS_USER_DATA_KEY_IMPL(GuestContentsHandle);
} // namespace guest_contents
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