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 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27 #include "History.h"
28
29 #include "BackForwardController.h"
30 #include "Document.h"
31 #include "ExceptionCode.h"
32 #include "Frame.h"
33 #include "FrameLoader.h"
34 #include "FrameLoaderClient.h"
35 #include "HistoryItem.h"
36 #include "Page.h"
37
38 namespace WebCore {
39
History(Frame * frame)40 History::History(Frame* frame)
41 : m_frame(frame)
42 {
43 }
44
frame() const45 Frame* History::frame() const
46 {
47 return m_frame;
48 }
49
disconnectFrame()50 void History::disconnectFrame()
51 {
52 m_frame = 0;
53 }
54
length() const55 unsigned History::length() const
56 {
57 if (!m_frame)
58 return 0;
59 if (!m_frame->page())
60 return 0;
61 return m_frame->page()->backForward()->count();
62 }
63
back()64 void History::back()
65 {
66 go(-1);
67 }
68
back(ScriptExecutionContext * context)69 void History::back(ScriptExecutionContext* context)
70 {
71 go(context, -1);
72 }
73
forward()74 void History::forward()
75 {
76 go(1);
77 }
78
forward(ScriptExecutionContext * context)79 void History::forward(ScriptExecutionContext* context)
80 {
81 go(context, 1);
82 }
83
go(int distance)84 void History::go(int distance)
85 {
86 if (!m_frame)
87 return;
88
89 m_frame->navigationScheduler()->scheduleHistoryNavigation(distance);
90 }
91
go(ScriptExecutionContext * context,int distance)92 void History::go(ScriptExecutionContext* context, int distance)
93 {
94 if (!m_frame)
95 return;
96
97 ASSERT(WTF::isMainThread());
98 Frame* activeFrame = static_cast<Document*>(context)->frame();
99 if (!activeFrame)
100 return;
101
102 if (!activeFrame->loader()->shouldAllowNavigation(m_frame))
103 return;
104
105 m_frame->navigationScheduler()->scheduleHistoryNavigation(distance);
106 }
107
urlForState(const String & urlString)108 KURL History::urlForState(const String& urlString)
109 {
110 KURL baseURL = m_frame->loader()->baseURL();
111 if (urlString.isEmpty())
112 return baseURL;
113
114 return KURL(baseURL, urlString);
115 }
116
stateObjectAdded(PassRefPtr<SerializedScriptValue> data,const String & title,const String & urlString,StateObjectType stateObjectType,ExceptionCode & ec)117 void History::stateObjectAdded(PassRefPtr<SerializedScriptValue> data, const String& title, const String& urlString, StateObjectType stateObjectType, ExceptionCode& ec)
118 {
119 if (!m_frame || !m_frame->page())
120 return;
121
122 KURL fullURL = urlForState(urlString);
123 if (!fullURL.isValid() || !m_frame->document()->securityOrigin()->canRequest(fullURL)) {
124 ec = SECURITY_ERR;
125 return;
126 }
127
128 if (stateObjectType == StateObjectPush)
129 m_frame->loader()->history()->pushState(data, title, fullURL.string());
130 else if (stateObjectType == StateObjectReplace)
131 m_frame->loader()->history()->replaceState(data, title, fullURL.string());
132
133 if (!urlString.isEmpty())
134 m_frame->document()->updateURLForPushOrReplaceState(fullURL);
135
136 if (stateObjectType == StateObjectPush)
137 m_frame->loader()->client()->dispatchDidPushStateWithinPage();
138 else if (stateObjectType == StateObjectReplace)
139 m_frame->loader()->client()->dispatchDidReplaceStateWithinPage();
140 }
141
142 } // namespace WebCore
143