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1 // Copyright 2015 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef COMPONENTS_WEB_VIEW_FRAME_TREE_DELEGATE_H_ | |
6 #define COMPONENTS_WEB_VIEW_FRAME_TREE_DELEGATE_H_ | |
7 | |
8 #include <stdint.h> | |
9 | |
10 #include <string> | |
11 | |
12 #include "base/callback_forward.h" | |
13 #include "base/memory/scoped_ptr.h" | |
14 #include "components/mus/public/interfaces/window_tree.mojom.h" | |
15 #include "components/web_view/public/interfaces/frame.mojom.h" | |
16 #include "mojo/services/network/public/interfaces/url_loader.mojom.h" | |
17 #include "url/gurl.h" | |
18 | |
19 namespace web_view { | |
20 | |
21 class Frame; | |
22 class FrameUserData; | |
23 | |
24 namespace mojom { | |
25 class HTMLMessageEvent; | |
26 } | |
27 | |
28 class FrameTreeDelegate { | |
29 public: | |
30 // Callback from CanNavigateFrame(). The uint32_t is the id of the app the | |
31 // FrameClient comes from; typically the content handler id. | |
32 using CanNavigateFrameCallback = | |
33 base::Callback<void(uint32_t, | |
34 mojom::FrameClient*, | |
35 scoped_ptr<FrameUserData>, | |
36 mus::mojom::WindowTreeClientPtr)>; | |
37 | |
38 // Called when a Frame creates a new child Frame. |frame_tree_client| is the | |
39 // FrameClient for the new frame. | |
40 virtual scoped_ptr<FrameUserData> CreateUserDataForNewFrame( | |
41 mojom::FrameClientPtr frame_client) = 0; | |
42 | |
43 // Returns whether a request to post a message from |source| to |target| | |
44 // is allowed. |source| and |target| are never null. | |
45 virtual bool CanPostMessageEventToFrame(const Frame* source, | |
46 const Frame* target, | |
47 mojom::HTMLMessageEvent* event) = 0; | |
48 | |
49 virtual void LoadingStateChanged(bool loading, double progress) = 0; | |
50 | |
51 virtual void TitleChanged(const mojo::String& title) = 0; | |
52 | |
53 // |source| is requesting a navigation. If |target_type| is | |
54 // |EXISTING_FRAME| then |target_frame| identifies the frame to perform the | |
55 // navigation in, otherwise |target_frame| is not used. |target_frame| may | |
56 // be null, even for |EXISTING_FRAME|. | |
57 // TODO(sky): this needs to distinguish between navigate in source, vs new | |
58 // background tab, vs new foreground tab. | |
59 virtual void NavigateTopLevel(Frame* source, mojo::URLRequestPtr request) = 0; | |
60 | |
61 // Asks the client if navigation is allowed. If the navigation is allowed | |
62 // |callback| should be called to continue the navigation. |callback| | |
63 // may be called synchronously or asynchronously. In the callback | |
64 // mus::mojom::WindowTreeClientPtr should only be set if an app other than | |
65 // frame->app_id() is used to render |request|. | |
66 virtual void CanNavigateFrame(Frame* target, | |
67 mojo::URLRequestPtr request, | |
68 const CanNavigateFrameCallback& callback) = 0; | |
69 | |
70 // Invoked when a navigation in |frame| has been initiated. | |
71 virtual void DidStartNavigation(Frame* frame) = 0; | |
72 | |
73 // Invoked when blink has started displaying the frame. | |
74 virtual void DidCommitProvisionalLoad(Frame* frame) = 0; | |
75 | |
76 // Invoked when the frame has changed its own URL. | |
77 virtual void DidNavigateLocally(Frame* source, const GURL& url) = 0; | |
78 | |
79 // Notification of various frame state changes. Generally only useful for | |
80 // tests. | |
81 virtual void DidCreateFrame(Frame* frame); | |
82 virtual void DidDestroyFrame(Frame* frame); | |
83 | |
84 // Invoked when the Window embedded in a Frame premuturely stops rendering | |
85 // to |frame|'s Window. This could mean any of the following: | |
86 // . The app crashed. | |
87 // . There is no app that renders the url. | |
88 // . The app is still alive, but is shutting down. | |
89 // Frame does nothing in response to this, but the delegate may wish to take | |
90 // action. | |
91 virtual void OnWindowEmbeddedInFrameDisconnected(Frame* frame); | |
92 | |
93 // Reports the current find state back to our owner. | |
94 virtual void OnFindInFrameCountUpdated(int32_t request_id, | |
95 Frame* frame, | |
96 int32_t count, | |
97 bool final_update); | |
98 virtual void OnFindInPageSelectionUpdated(int32_t request_id, | |
99 Frame* frame, | |
100 int32_t active_match_ordinal); | |
101 | |
102 protected: | |
103 virtual ~FrameTreeDelegate() {} | |
104 }; | |
105 | |
106 } // namespace web_view | |
107 | |
108 #endif // COMPONENTS_WEB_VIEW_FRAME_TREE_DELEGATE_H_ | |
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