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content / browser / closewatcher / close_listener_host.cc [blame]

// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "content/browser/closewatcher/close_listener_host.h"

#include "content/browser/closewatcher/close_listener_manager.h"
#include "content/public/browser/render_frame_host.h"
#include "services/service_manager/public/cpp/interface_provider.h"

namespace content {

CloseListenerHost::CloseListenerHost(RenderFrameHost* render_frame_host)
    : DocumentUserData<CloseListenerHost>(render_frame_host) {}

CloseListenerHost::~CloseListenerHost() {
  OnDisconnect();
}

CloseListenerManager* CloseListenerHost::GetOrCreateManager() {
  auto* web_contents = WebContents::FromRenderFrameHost(&render_frame_host());
  CloseListenerManager::CreateForWebContents(web_contents);
  return CloseListenerManager::FromWebContents(web_contents);
}

void CloseListenerHost::SetListener(
    mojo::PendingRemote<blink::mojom::CloseListener> listener) {
  if (close_listener_.is_bound()) {
    close_listener_.reset();
  }
  close_listener_.Bind(std::move(listener));
  // The renderer resets the message pipe when no CloseWatchers are
  // waiting for a Signal().
  close_listener_.set_disconnect_handler(
      base::BindOnce(&CloseListenerHost::OnDisconnect, base::Unretained(this)));
  GetOrCreateManager()->MaybeUpdateInterceptStatus(this);
}

void CloseListenerHost::OnDisconnect() {
  if (close_listener_.is_bound()) {
    close_listener_.reset();
  }
  GetOrCreateManager()->MaybeUpdateInterceptStatus(this);
}

bool CloseListenerHost::IsActive() {
  return close_listener_.is_bound();
}

bool CloseListenerHost::SignalIfActive() {
  if (!IsActive()) {
    return false;
  }
  close_listener_->Signal();
  return true;
}

DOCUMENT_USER_DATA_KEY_IMPL(CloseListenerHost);

}  // namespace content