1 /*
2 * The MIT License (MIT)
3 *
4 * Copyright (c) 2018 Nathan Osman
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to
8 * deal in the Software without restriction, including without limitation the
9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
10 * sell copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
22 * IN THE SOFTWARE.
23 **/
24
25 #include <windows.h>
26
27 #include "classfactory.h"
28 #include "contextmenu.h"
29 #include "nitroshell.h"
30
ClassFactory()31 ClassFactory::ClassFactory()
32 : mRefCount(1)
33 {
34 }
35
QueryInterface(REFIID riid,LPVOID * ppvObject)36 STDMETHODIMP ClassFactory::QueryInterface(REFIID riid, LPVOID *ppvObject)
37 {
38 if (!ppvObject) {
39 return E_INVALIDARG;
40 }
41
42 *ppvObject = NULL;
43
44 if (IsEqualIID(riid, IID_IUnknown)) {
45 OutputDebugString(TEXT("ClassFactory queried for IUnknown"));
46 *ppvObject = this;
47 } else if (IsEqualIID(riid, IID_IClassFactory)) {
48 OutputDebugString(TEXT("ClassFactory queried for IClassFactory"));
49 *ppvObject = (IClassFactory*) this;
50 } else {
51 return E_NOINTERFACE;
52 }
53
54 AddRef();
55 return S_OK;
56 }
57
STDMETHODIMP_(ULONG)58 STDMETHODIMP_(ULONG) ClassFactory::AddRef()
59 {
60 InterlockedIncrement(&mRefCount);
61 return mRefCount;
62 }
63
STDMETHODIMP_(ULONG)64 STDMETHODIMP_(ULONG) ClassFactory::Release()
65 {
66 ULONG refCount = InterlockedDecrement(&mRefCount);
67 if (!mRefCount) {
68 delete this;
69 }
70 return refCount;
71 }
72
CreateInstance(IUnknown * pUnkOuter,REFIID riid,LPVOID * ppvObject)73 STDMETHODIMP ClassFactory::CreateInstance(IUnknown *pUnkOuter, REFIID riid, LPVOID *ppvObject)
74 {
75 if (pUnkOuter) {
76 return CLASS_E_NOAGGREGATION;
77 }
78
79 if (!ppvObject) {
80 return E_INVALIDARG;
81 }
82
83 *ppvObject = NULL;
84
85 ContextMenu *contextMenu = new ContextMenu;
86 HRESULT hResult = contextMenu->QueryInterface(riid, ppvObject);
87 contextMenu->Release();
88 return hResult;
89 }
90
LockServer(BOOL fLock)91 STDMETHODIMP ClassFactory::LockServer(BOOL fLock)
92 {
93 if (fLock) {
94 InterlockedIncrement(&gLockCount);
95 } else {
96 InterlockedDecrement(&gLockCount);
97 }
98
99 return NOERROR;
100 }
101