1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
/*
* Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "WebKitDLL.h"
#include "WebNotificationCenter.h"
#include "WebNotification.h"
#include <WebCore/BString.h>
#include <WebCore/COMPtr.h>
#include <utility>
#include <wchar.h>
#include <wtf/HashMap.h>
#include <wtf/HashTraits.h>
#include <wtf/PassOwnPtr.h>
#include <wtf/Vector.h>
#include <wtf/text/StringHash.h>
#include <wtf/text/WTFString.h>
using namespace WebCore;
typedef std::pair<COMPtr<IUnknown>, COMPtr<IWebNotificationObserver> > ObjectObserverPair;
typedef Vector<ObjectObserverPair> ObjectObserverList;
typedef ObjectObserverList::iterator ObserverListIterator;
typedef HashMap<String, ObjectObserverList> MappedObservers;
struct WebNotificationCenterPrivate {
MappedObservers m_mappedObservers;
};
// WebNotificationCenter ----------------------------------------------------------------
IWebNotificationCenter* WebNotificationCenter::m_defaultCenter = 0;
WebNotificationCenter::WebNotificationCenter()
: m_refCount(0)
, d(adoptPtr(new WebNotificationCenterPrivate))
{
gClassCount++;
gClassNameCount.add("WebNotificationCenter");
}
WebNotificationCenter::~WebNotificationCenter()
{
gClassCount--;
gClassNameCount.remove("WebNotificationCenter");
}
WebNotificationCenter* WebNotificationCenter::createInstance()
{
WebNotificationCenter* instance = new WebNotificationCenter();
instance->AddRef();
return instance;
}
// IUnknown -------------------------------------------------------------------
HRESULT STDMETHODCALLTYPE WebNotificationCenter::QueryInterface(REFIID riid, void** ppvObject)
{
*ppvObject = 0;
if (IsEqualGUID(riid, IID_IUnknown))
*ppvObject = static_cast<IWebNotificationCenter*>(this);
else if (IsEqualGUID(riid, IID_IWebNotificationCenter))
*ppvObject = static_cast<IWebNotificationCenter*>(this);
else
return E_NOINTERFACE;
AddRef();
return S_OK;
}
ULONG STDMETHODCALLTYPE WebNotificationCenter::AddRef(void)
{
return ++m_refCount;
}
ULONG STDMETHODCALLTYPE WebNotificationCenter::Release(void)
{
ULONG newRef = --m_refCount;
if (!newRef)
delete(this);
return newRef;
}
IWebNotificationCenter* WebNotificationCenter::defaultCenterInternal()
{
if (!m_defaultCenter)
m_defaultCenter = WebNotificationCenter::createInstance();
return m_defaultCenter;
}
void WebNotificationCenter::postNotificationInternal(IWebNotification* notification, BSTR notificationName, IUnknown* anObject)
{
String name(notificationName, SysStringLen(notificationName));
MappedObservers::iterator it = d->m_mappedObservers.find(name);
if (it == d->m_mappedObservers.end())
return;
// Intentionally make a copy of the list to avoid the possibility of errors
// from a mutation of the list in the onNotify callback.
ObjectObserverList list = it->value;
ObserverListIterator end = list.end();
for (ObserverListIterator it2 = list.begin(); it2 != end; ++it2) {
IUnknown* observedObject = it2->first.get();
IWebNotificationObserver* observer = it2->second.get();
if (!observedObject || !anObject || observedObject == anObject)
observer->onNotify(notification);
}
}
// IWebNotificationCenter -----------------------------------------------------
HRESULT STDMETHODCALLTYPE WebNotificationCenter::defaultCenter(
/* [retval][out] */ IWebNotificationCenter** center)
{
*center = defaultCenterInternal();
(*center)->AddRef();
return S_OK;
}
HRESULT STDMETHODCALLTYPE WebNotificationCenter::addObserver(
/* [in] */ IWebNotificationObserver* observer,
/* [in] */ BSTR notificationName,
/* [in] */ IUnknown* anObject)
{
String name(notificationName, SysStringLen(notificationName));
MappedObservers::iterator it = d->m_mappedObservers.find(name);
if (it != d->m_mappedObservers.end())
it->value.append(ObjectObserverPair(anObject, observer));
else {
ObjectObserverList list;
list.append(ObjectObserverPair(anObject, observer));
d->m_mappedObservers.add(name, list);
}
return S_OK;
}
HRESULT STDMETHODCALLTYPE WebNotificationCenter::postNotification(
/* [in] */ IWebNotification* notification)
{
BString name;
HRESULT hr = notification->name(&name);
if (FAILED(hr))
return hr;
COMPtr<IUnknown> obj;
hr = notification->getObject(&obj);
if (FAILED(hr))
return hr;
postNotificationInternal(notification, name, obj.get());
return hr;
}
HRESULT STDMETHODCALLTYPE WebNotificationCenter::postNotificationName(
/* [in] */ BSTR notificationName,
/* [in] */ IUnknown* anObject,
/* [optional][in] */ IPropertyBag* userInfo)
{
COMPtr<WebNotification> notification(AdoptCOM, WebNotification::createInstance(notificationName, anObject, userInfo));
postNotificationInternal(notification.get(), notificationName, anObject);
return S_OK;
}
HRESULT STDMETHODCALLTYPE WebNotificationCenter::removeObserver(
/* [in] */ IWebNotificationObserver* anObserver,
/* [in] */ BSTR notificationName,
/* [optional][in] */ IUnknown* anObject)
{
String name(notificationName, SysStringLen(notificationName));
MappedObservers::iterator it = d->m_mappedObservers.find(name);
if (it == d->m_mappedObservers.end())
return E_FAIL;
ObjectObserverList& observerList = it->value;
ObserverListIterator end = observerList.end();
int i = 0;
for (ObserverListIterator it2 = observerList.begin(); it2 != end; ++it2, ++i) {
IUnknown* observedObject = it2->first.get();
IWebNotificationObserver* observer = it2->second.get();
if (observer == anObserver && (!anObject || anObject == observedObject)) {
observerList.remove(i);
break;
}
}
if (observerList.isEmpty())
d->m_mappedObservers.remove(name);
return S_OK;
}
|
