PageURLRecord.h revision 2daae5fd11344eaa88a0d92b0f6d65f8d2255c00 
1/*
2 * Copyright (C) 2007 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 *     its contributors may be used to endorse or promote products derived
15 *     from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifndef PageURLRecord_h
30#define PageURLRecord_h
31
32#include "PlatformString.h"
33
34#include <wtf/Noncopyable.h>
35#include <wtf/RefPtr.h>
36
37namespace WebCore {
38
39class IconRecord;
40
41class PageURLSnapshot {
42public:
43    PageURLSnapshot() { }
44
45    PageURLSnapshot(const String& pageURL, const String& iconURL)
46        : m_pageURL(pageURL)
47        , m_iconURL(iconURL)
48    { }
49
50    const String& pageURL() const { return m_pageURL; }
51    const String& iconURL() const { return m_iconURL; }
52
53private:
54    String m_pageURL;
55    String m_iconURL;
56};
57
58class PageURLRecord {
59    WTF_MAKE_NONCOPYABLE(PageURLRecord); WTF_MAKE_FAST_ALLOCATED;
60public:
61    PageURLRecord(const String& pageURL);
62    ~PageURLRecord();
63
64    inline String url() const { return m_pageURL; }
65
66    void setIconRecord(PassRefPtr<IconRecord>);
67    IconRecord* iconRecord() { return m_iconRecord.get(); }
68
69    PageURLSnapshot snapshot(bool forDeletion = false) const;
70
71    // Returns false if the page wasn't retained beforehand, true if the retain count was already 1 or higher
72    inline bool retain() { return m_retainCount++; }
73
74    // Returns true if the page is still retained after the call.  False if the retain count just dropped to 0
75    inline bool release()
76    {
77        ASSERT(m_retainCount > 0);
78        return --m_retainCount;
79    }
80
81    inline int retainCount() const { return m_retainCount; }
82private:
83    String m_pageURL;
84    RefPtr<IconRecord> m_iconRecord;
85    int m_retainCount;
86};
87
88}
89
90#endif // PageURLRecord_h
91