blob: 56cf37f5dc050341e54f0d0bf4e90927094ab38a (
plain)
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
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "GroupedSHistory.h"
#include "TabParent.h"
#include "PartialSHistory.h"
namespace mozilla {
namespace dom {
NS_IMPL_CYCLE_COLLECTION(GroupedSHistory, mPartialHistories)
NS_IMPL_CYCLE_COLLECTING_ADDREF(GroupedSHistory)
NS_IMPL_CYCLE_COLLECTING_RELEASE(GroupedSHistory)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(GroupedSHistory)
NS_INTERFACE_MAP_ENTRY(nsIGroupedSHistory)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIGroupedSHistory)
NS_INTERFACE_MAP_END
GroupedSHistory::GroupedSHistory()
: mCount(0),
mIndexOfActivePartialHistory(-1)
{
}
NS_IMETHODIMP
GroupedSHistory::GetCount(uint32_t* aResult)
{
MOZ_ASSERT(aResult);
*aResult = mCount;
return NS_OK;
}
NS_IMETHODIMP
GroupedSHistory::AppendPartialSessionHistory(nsIPartialSHistory* aPartialHistory)
{
if (!aPartialHistory) {
return NS_ERROR_INVALID_POINTER;
}
nsCOMPtr<nsIPartialSHistory> partialHistory(aPartialHistory);
if (!partialHistory || mPartialHistories.Contains(partialHistory)) {
return NS_ERROR_FAILURE;
}
// Remove all items after active one and deactive it, unless it's the first
// call and no active partial history has been set yet.
if (mIndexOfActivePartialHistory >= 0) {
PurgePartialHistories(mIndexOfActivePartialHistory);
nsCOMPtr<nsIPartialSHistory> prevPartialHistory =
mPartialHistories[mIndexOfActivePartialHistory];
if (NS_WARN_IF(!prevPartialHistory)) {
// Cycle collected?
return NS_ERROR_UNEXPECTED;
}
prevPartialHistory->OnDeactive();
}
// Attach the partial history.
uint32_t offset = mCount;
mCount += partialHistory->GetCount();
mPartialHistories.AppendElement(partialHistory);
partialHistory->OnAttachGroupedSessionHistory(offset);
mIndexOfActivePartialHistory = mPartialHistories.Count() - 1;
return NS_OK;
}
NS_IMETHODIMP
GroupedSHistory::OnPartialSessionHistoryChange(
nsIPartialSHistory* aPartialSessionHistory)
{
if (!aPartialSessionHistory) {
return NS_ERROR_INVALID_POINTER;
}
nsCOMPtr<nsIPartialSHistory> partialHistory(aPartialSessionHistory);
int32_t index = mPartialHistories.IndexOf(partialHistory);
if (NS_WARN_IF(index != mIndexOfActivePartialHistory) ||
NS_WARN_IF(index < 0)) {
// Non-active or not attached partialHistory
return NS_ERROR_UNEXPECTED;
}
PurgePartialHistories(index);
// Update global count.
uint32_t count = partialHistory->GetCount();
uint32_t offset = partialHistory->GetGlobalIndexOffset();
mCount = count + offset;
return NS_OK;
}
NS_IMETHODIMP
GroupedSHistory::GotoIndex(uint32_t aGlobalIndex,
nsIFrameLoader** aTargetLoaderToSwap)
{
nsCOMPtr<nsIPartialSHistory> currentPartialHistory =
mPartialHistories[mIndexOfActivePartialHistory];
if (!currentPartialHistory) {
// Cycle collected?
return NS_ERROR_UNEXPECTED;
}
for (uint32_t i = 0; i < mPartialHistories.Length(); i++) {
nsCOMPtr<nsIPartialSHistory> partialHistory = mPartialHistories[i];
if (NS_WARN_IF(!partialHistory)) {
// Cycle collected?
return NS_ERROR_UNEXPECTED;
}
// Examine index range.
uint32_t offset = partialHistory->GetGlobalIndexOffset();
uint32_t count = partialHistory->GetCount();
if (offset <= aGlobalIndex && (offset + count) > aGlobalIndex) {
uint32_t targetIndex = aGlobalIndex - offset;
partialHistory->GetOwnerFrameLoader(aTargetLoaderToSwap);
if ((size_t)mIndexOfActivePartialHistory == i) {
return NS_OK;
}
mIndexOfActivePartialHistory = i;
if (NS_FAILED(currentPartialHistory->OnDeactive()) ||
NS_FAILED(partialHistory->OnActive(mCount, targetIndex))) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
}
// Index not found.
NS_WARNING("Out of index request!");
return NS_ERROR_FAILURE;
}
void
GroupedSHistory::PurgePartialHistories(uint32_t aLastPartialIndexToKeep)
{
uint32_t lastIndex = mPartialHistories.Length() - 1;
if (aLastPartialIndexToKeep >= lastIndex) {
// Nothing to remove.
return;
}
// Close tabs.
for (uint32_t i = lastIndex; i > aLastPartialIndexToKeep; i--) {
nsCOMPtr<nsIPartialSHistory> partialHistory = mPartialHistories[i];
if (!partialHistory) {
// Cycle collected?
return;
}
nsCOMPtr<nsIFrameLoader> loader;
partialHistory->GetOwnerFrameLoader(getter_AddRefs(loader));
loader->RequestFrameLoaderClose();
}
// Remove references.
mPartialHistories.RemoveElementsAt(aLastPartialIndexToKeep + 1,
lastIndex - aLastPartialIndexToKeep);
}
/* static */ bool
GroupedSHistory::GroupedHistoryEnabled() {
return Preferences::GetBool("browser.groupedhistory.enabled", false);
}
} // namespace dom
} // namespace mozilla
|
