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/web_contents.h"
11 #include "extensions/browser/process_util.h"
12 #include "third_party/blink/public/common/input/web_gesture_event.h"
13
14 using content::NativeWebKeyboardEvent;
15 using content::OpenURLParams;
16 using content::WebContents;
17 using content::WebContentsObserver;
18
19 namespace extensions {
20
CefExtensionViewHost(AlloyBrowserHostImpl * browser,const Extension * extension,content::WebContents * host_contents,const GURL & url,mojom::ViewType host_type)21 CefExtensionViewHost::CefExtensionViewHost(AlloyBrowserHostImpl* browser,
22 const Extension* extension,
23 content::WebContents* host_contents,
24 const GURL& url,
25 mojom::ViewType host_type)
26 : ExtensionHost(new CefExtensionHostDelegate(browser),
27 extension,
28 host_contents->GetBrowserContext(),
29 host_contents,
30 url,
31 host_type) {
32 // Only used for dialogs and popups.
33 DCHECK(host_type == mojom::ViewType::kExtensionDialog ||
34 host_type == mojom::ViewType::kExtensionPopup);
35 }
36
~CefExtensionViewHost()37 CefExtensionViewHost::~CefExtensionViewHost() {}
38
OnDidStopFirstLoad()39 void CefExtensionViewHost::OnDidStopFirstLoad() {
40 // Nothing to do here, but don't call the base class method.
41 }
42
LoadInitialURL()43 void CefExtensionViewHost::LoadInitialURL() {
44 if (process_util::GetPersistentBackgroundPageState(*extension(),
45 browser_context()) ==
46 process_util::PersistentBackgroundPageState::kNotReady) {
47 // Make sure the background page loads before any others.
48 host_registry_observation_.Observe(
49 ExtensionHostRegistry::Get(browser_context()));
50 return;
51 }
52
53 ExtensionHost::LoadInitialURL();
54 }
55
IsBackgroundPage() const56 bool CefExtensionViewHost::IsBackgroundPage() const {
57 return false;
58 }
59
ShouldAllowRendererInitiatedCrossProcessNavigation(bool is_main_frame_navigation)60 bool CefExtensionViewHost::ShouldAllowRendererInitiatedCrossProcessNavigation(
61 bool is_main_frame_navigation) {
62 // Block navigations that cause the main frame to navigate to non-extension
63 // content (i.e. to web content).
64 return !is_main_frame_navigation;
65 }
66
PreHandleGestureEvent(content::WebContents * source,const blink::WebGestureEvent & event)67 bool CefExtensionViewHost::PreHandleGestureEvent(
68 content::WebContents* source,
69 const blink::WebGestureEvent& event) {
70 // Disable pinch zooming.
71 return blink::WebInputEvent::IsPinchGestureEventType(event.GetType());
72 }
73
GetVisibleWebContents() const74 WebContents* CefExtensionViewHost::GetVisibleWebContents() const {
75 if (extension_host_type() == mojom::ViewType::kExtensionPopup)
76 return host_contents();
77 return nullptr;
78 }
79
OnExtensionHostDocumentElementAvailable(content::BrowserContext * host_browser_context,ExtensionHost * extension_host)80 void CefExtensionViewHost::OnExtensionHostDocumentElementAvailable(
81 content::BrowserContext* host_browser_context,
82 ExtensionHost* extension_host) {
83 DCHECK(extension_host->extension());
84 if (host_browser_context != browser_context() ||
85 extension_host->extension() != extension() ||
86 extension_host->extension_host_type() !=
87 mojom::ViewType::kExtensionBackgroundPage) {
88 return;
89 }
90
91 DCHECK_EQ(process_util::PersistentBackgroundPageState::kReady,
92 process_util::GetPersistentBackgroundPageState(*extension(),
93 browser_context()));
94 // We only needed to wait for the background page to load, so stop observing.
95 host_registry_observation_.Reset();
96 LoadInitialURL();
97 }
98
99 } // namespace extensions
100