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1 // Copyright (c) 2011 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 CHROME_FRAME_COM_MESSAGE_EVENT_H_ | |
6 #define CHROME_FRAME_COM_MESSAGE_EVENT_H_ | |
7 | |
8 #include <atlbase.h> | |
9 #include <atlcom.h> | |
10 #include <mshtml.h> // IHTMLEventObj | |
11 | |
12 #include "base/basictypes.h" | |
13 #include "base/win/scoped_comptr.h" | |
14 | |
15 // Implements a MessageEvent compliant event object by providing MessageEvent | |
16 // specific properties itself and inherited properties from a browser provided | |
17 // event implementation. | |
18 // NOTE: The messagePort and source properties will always be NULL. | |
19 // See the HTML 5 spec for further details on a MessageEvent object: | |
20 // http://www.whatwg.org/specs/web-apps/current-work/multipage/comms.html#messag
eevent | |
21 class ComMessageEvent | |
22 : public CComObjectRootEx<CComSingleThreadModel>, | |
23 public IDispatch { | |
24 public: | |
25 ComMessageEvent(); | |
26 ~ComMessageEvent(); | |
27 | |
28 BEGIN_COM_MAP(ComMessageEvent) | |
29 COM_INTERFACE_ENTRY(IDispatch) | |
30 END_COM_MAP() | |
31 | |
32 // The dispids we support. These are based on HTML5 and not IHTMLEventObj5 | |
33 // (there are a couple of differences). | |
34 // http://dev.w3.org/html5/spec/Overview.html#messageevent | |
35 // vs http://msdn.microsoft.com/en-us/library/cc288548(VS.85).aspx | |
36 typedef enum { | |
37 DISPID_MESSAGE_EVENT_DATA = 201, | |
38 DISPID_MESSAGE_EVENT_ORIGIN, | |
39 DISPID_MESSAGE_EVENT_LAST_EVENT_ID, | |
40 DISPID_MESSAGE_EVENT_SOURCE, | |
41 DISPID_MESSAGE_EVENT_MESSAGE_PORT, | |
42 DISPID_MESSAGE_EVENT_TYPE | |
43 } MessageEventDispIds; | |
44 | |
45 // Utility function for checking Invoke flags and assigning a BSTR to the | |
46 // result variable. | |
47 HRESULT GetStringProperty(WORD flags, const wchar_t* value, VARIANT* result); | |
48 | |
49 STDMETHOD(GetTypeInfoCount)(UINT* info); | |
50 STDMETHOD(GetTypeInfo)(UINT which_info, LCID lcid, ITypeInfo** type_info); | |
51 STDMETHOD(GetIDsOfNames)(REFIID iid, LPOLESTR* names, UINT count_names, | |
52 LCID lcid, DISPID* dispids); | |
53 STDMETHOD(Invoke)(DISPID dispid, REFIID iid, LCID lcid, WORD flags, | |
54 DISPPARAMS* params, VARIANT* result, EXCEPINFO* excepinfo, | |
55 UINT* arg_err); | |
56 | |
57 // Initializes this object. The container pointer is used to find the | |
58 // container's IHTMLEventObj implementation if available. | |
59 bool Initialize(IOleContainer* container, const std::string& message, | |
60 const std::string& origin, const std::string& event_type); | |
61 | |
62 protected: | |
63 // HTML Event object to which we delegate property and method | |
64 // calls that we do not directly support. This may not be initialized | |
65 // if our container does not require the properties/methods exposed by | |
66 // the basic event object. | |
67 base::win::ScopedComPtr<IHTMLEventObj> basic_event_; | |
68 std::string message_; | |
69 std::string origin_; | |
70 std::string type_; | |
71 | |
72 private: | |
73 DISALLOW_COPY_AND_ASSIGN(ComMessageEvent); | |
74 }; | |
75 | |
76 #endif // CHROME_FRAME_COM_MESSAGE_EVENT_H_ | |
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