cef/libcef/browser/extensions/extension_view_host.cc

100 lines
3.5 KiB
C++

// Copyright 2017 the Chromium Embedded Framework Authors. Portions copyright
// 2013 The Chromium Authors. All rights reserved. Use of this source code is
// governed by a BSD-style license that can be found in the LICENSE file.
#include "libcef/browser/extensions/extension_view_host.h"
#include "libcef/browser/browser_platform_delegate.h"
#include "libcef/browser/extensions/extension_host_delegate.h"
#include "content/public/browser/web_contents.h"
#include "extensions/browser/process_util.h"
#include "third_party/blink/public/common/input/web_gesture_event.h"
using content::NativeWebKeyboardEvent;
using content::OpenURLParams;
using content::WebContents;
using content::WebContentsObserver;
namespace extensions {
CefExtensionViewHost::CefExtensionViewHost(AlloyBrowserHostImpl* browser,
const Extension* extension,
content::WebContents* host_contents,
const GURL& url,
mojom::ViewType host_type)
: ExtensionHost(new CefExtensionHostDelegate(browser),
extension,
host_contents->GetBrowserContext(),
host_contents,
url,
host_type) {
// Only used for popups.
DCHECK(host_type == mojom::ViewType::kExtensionPopup);
}
CefExtensionViewHost::~CefExtensionViewHost() = default;
void CefExtensionViewHost::OnDidStopFirstLoad() {
// Nothing to do here, but don't call the base class method.
}
void CefExtensionViewHost::LoadInitialURL() {
if (process_util::GetPersistentBackgroundPageState(*extension(),
browser_context()) ==
process_util::PersistentBackgroundPageState::kNotReady) {
// Make sure the background page loads before any others.
host_registry_observation_.Observe(
ExtensionHostRegistry::Get(browser_context()));
return;
}
ExtensionHost::LoadInitialURL();
}
bool CefExtensionViewHost::IsBackgroundPage() const {
return false;
}
bool CefExtensionViewHost::ShouldAllowRendererInitiatedCrossProcessNavigation(
bool is_main_frame_navigation) {
// Block navigations that cause the main frame to navigate to non-extension
// content (i.e. to web content).
return !is_main_frame_navigation;
}
bool CefExtensionViewHost::PreHandleGestureEvent(
content::WebContents* source,
const blink::WebGestureEvent& event) {
// Disable pinch zooming.
return blink::WebInputEvent::IsPinchGestureEventType(event.GetType());
}
WebContents* CefExtensionViewHost::GetVisibleWebContents() const {
if (extension_host_type() == mojom::ViewType::kExtensionPopup) {
return host_contents();
}
return nullptr;
}
void CefExtensionViewHost::OnExtensionHostDocumentElementAvailable(
content::BrowserContext* host_browser_context,
ExtensionHost* extension_host) {
DCHECK(extension_host->extension());
if (host_browser_context != browser_context() ||
extension_host->extension() != extension() ||
extension_host->extension_host_type() !=
mojom::ViewType::kExtensionBackgroundPage) {
return;
}
DCHECK_EQ(process_util::PersistentBackgroundPageState::kReady,
process_util::GetPersistentBackgroundPageState(*extension(),
browser_context()));
// We only needed to wait for the background page to load, so stop observing.
host_registry_observation_.Reset();
LoadInitialURL();
}
} // namespace extensions