1 // Copyright 2017 the Chromium Embedded Framework Authors. Portions copyright
2 // 2013 The Chromium Authors. All rights reserved. Use of this source code is
3 // governed by a BSD-style license that can be found in the LICENSE file.
4
5 #include "libcef/browser/extensions/extension_view_host.h"
6
7 #include "libcef/browser/browser_platform_delegate.h"
8 #include "libcef/browser/extensions/extension_host_delegate.h"
9
10 #include "content/public/browser/notification_source.h"
11 #include "content/public/browser/web_contents.h"
12 #include "extensions/browser/extension_system.h"
13 #include "extensions/browser/notification_types.h"
14 #include "extensions/browser/runtime_data.h"
15 #include "third_party/blink/public/common/input/web_gesture_event.h"
16
17 using content::NativeWebKeyboardEvent;
18 using content::OpenURLParams;
19 using content::WebContents;
20 using content::WebContentsObserver;
21
22 namespace extensions {
23
CefExtensionViewHost(AlloyBrowserHostImpl * browser,const Extension * extension,content::WebContents * host_contents,const GURL & url,mojom::ViewType host_type)24 CefExtensionViewHost::CefExtensionViewHost(AlloyBrowserHostImpl* browser,
25 const Extension* extension,
26 content::WebContents* host_contents,
27 const GURL& url,
28 mojom::ViewType host_type)
29 : ExtensionHost(new CefExtensionHostDelegate(browser),
30 extension,
31 host_contents->GetBrowserContext(),
32 host_contents,
33 url,
34 host_type) {
35 // Only used for dialogs and popups.
36 DCHECK(host_type == mojom::ViewType::kExtensionDialog ||
37 host_type == mojom::ViewType::kExtensionPopup);
38 }
39
~CefExtensionViewHost()40 CefExtensionViewHost::~CefExtensionViewHost() {}
41
OnDidStopFirstLoad()42 void CefExtensionViewHost::OnDidStopFirstLoad() {
43 // Nothing to do here, but don't call the base class method.
44 }
45
LoadInitialURL()46 void CefExtensionViewHost::LoadInitialURL() {
47 if (!ExtensionSystem::Get(browser_context())
48 ->runtime_data()
49 ->IsBackgroundPageReady(extension())) {
50 // Make sure the background page loads before any others.
51 registrar_.Add(this,
52 extensions::NOTIFICATION_EXTENSION_BACKGROUND_PAGE_READY,
53 content::Source<Extension>(extension()));
54 return;
55 }
56
57 ExtensionHost::LoadInitialURL();
58 }
59
IsBackgroundPage() const60 bool CefExtensionViewHost::IsBackgroundPage() const {
61 return false;
62 }
63
ShouldTransferNavigation(bool is_main_frame_navigation)64 bool CefExtensionViewHost::ShouldTransferNavigation(
65 bool is_main_frame_navigation) {
66 // Block navigations that cause the main frame to navigate to non-extension
67 // content (i.e. to web content).
68 return !is_main_frame_navigation;
69 }
70
PreHandleGestureEvent(content::WebContents * source,const blink::WebGestureEvent & event)71 bool CefExtensionViewHost::PreHandleGestureEvent(
72 content::WebContents* source,
73 const blink::WebGestureEvent& event) {
74 // Disable pinch zooming.
75 return blink::WebInputEvent::IsPinchGestureEventType(event.GetType());
76 }
77
GetVisibleWebContents() const78 WebContents* CefExtensionViewHost::GetVisibleWebContents() const {
79 if (extension_host_type() == mojom::ViewType::kExtensionPopup)
80 return host_contents();
81 return nullptr;
82 }
83
Observe(int type,const content::NotificationSource & source,const content::NotificationDetails & details)84 void CefExtensionViewHost::Observe(
85 int type,
86 const content::NotificationSource& source,
87 const content::NotificationDetails& details) {
88 DCHECK_EQ(type, extensions::NOTIFICATION_EXTENSION_BACKGROUND_PAGE_READY);
89 DCHECK(ExtensionSystem::Get(browser_context())
90 ->runtime_data()
91 ->IsBackgroundPageReady(extension()));
92 LoadInitialURL();
93 }
94
95 } // namespace extensions
96