1/*
2Open Tracker License
3
4Terms and Conditions
5
6Copyright (c) 1991-2000, Be Incorporated. All rights reserved.
7
8Permission is hereby granted, free of charge, to any person obtaining a copy of
9this software and associated documentation files (the "Software"), to deal in
10the Software without restriction, including without limitation the rights to
11use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
12of the Software, and to permit persons to whom the Software is furnished to do
13so, subject to the following conditions:
14
15The above copyright notice and this permission notice applies to all licensees
16and shall be included in all copies or substantial portions of the Software.
17
18THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF TITLE, MERCHANTABILITY,
20FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21BE INCORPORATED BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF, OR IN CONNECTION
23WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24
25Except as contained in this notice, the name of Be Incorporated shall not be
26used in advertising or otherwise to promote the sale, use or other dealings in
27this Software without prior written authorization from Be Incorporated.
28
29Tracker(TM), Be(R), BeOS(R), and BeIA(TM) are trademarks or registered trademarks
30of Be Incorporated in the United States and other countries. Other brand product
31names are registered trademarks or trademarks of their respective holders.
32All rights reserved.
33*/
34
35
36#include "PendingNodeMonitorCache.h"
37#include "PoseView.h"
38
39
40const bigtime_t kDelayedNodeMonitorLifetime = 10000000;
41	// after this much the pending node monitor gets discarded as
42	// too old
43
44
45PendingNodeMonitorEntry::PendingNodeMonitorEntry(const node_ref* node,
46	const BMessage* nodeMonitor)
47	:
48	fExpiresAfter(system_time() + kDelayedNodeMonitorLifetime),
49	fNodeMonitor(*nodeMonitor),
50	fNode(*node)
51{
52}
53
54
55const BMessage*
56PendingNodeMonitorEntry::NodeMonitor() const
57{
58	return &fNodeMonitor;
59}
60
61
62bool
63PendingNodeMonitorEntry::Match(const node_ref* node) const
64{
65	return fNode == *node;
66}
67
68
69bool
70PendingNodeMonitorEntry::TooOld(bigtime_t now) const
71{
72	return now > fExpiresAfter;
73}
74
75
76PendingNodeMonitorCache::PendingNodeMonitorCache()
77	:
78	fList(10, true)
79{
80}
81
82
83PendingNodeMonitorCache::~PendingNodeMonitorCache()
84{
85}
86
87
88void
89PendingNodeMonitorCache::Add(const BMessage* message)
90{
91#if xDEBUG
92	PRINT(("adding pending node monitor\n"));
93	message->PrintToStream();
94#endif
95	node_ref node;
96	if (message->FindInt32("device", &node.device) != B_OK
97		|| message->FindInt64("node", (int64*)&node.node) != B_OK)
98		return;
99
100	fList.AddItem(new PendingNodeMonitorEntry(&node, message));
101}
102
103
104void
105PendingNodeMonitorCache::RemoveEntries(const node_ref* nodeRef)
106{
107	int32 count = fList.CountItems();
108	for (int32 index = count - 1; index >= 0; index--)
109		if (fList.ItemAt(index)->Match(nodeRef))
110			delete fList.RemoveItemAt(index);
111}
112
113
114void
115PendingNodeMonitorCache::RemoveOldEntries()
116{
117	bigtime_t now = system_time();
118	int32 count = fList.CountItems();
119	for (int32 index = count - 1; index >= 0; index--)
120		if (fList.ItemAt(index)->TooOld(now)) {
121			PRINT(("removing old entry from pending node monitor cache\n"));
122			delete fList.RemoveItemAt(index);
123		}
124}
125
126
127void
128PendingNodeMonitorCache::PoseCreatedOrMoved(BPoseView* poseView,
129	const BPose* pose)
130{
131	bigtime_t now = system_time();
132	for (int32 index = 0; index < fList.CountItems();) {
133		PendingNodeMonitorEntry* item = fList.ItemAt(index);
134		if (item->TooOld(now)) {
135			PRINT(("removing old entry from pending node monitor cache\n"));
136			delete fList.RemoveItemAt(index);
137		} else if (item->Match(pose->TargetModel()->NodeRef())) {
138			fList.RemoveItemAt(index);
139#if DEBUG
140			PRINT(("reapplying node monitor for model:\n"));
141			pose->TargetModel()->PrintToStream();
142			item->NodeMonitor()->PrintToStream();
143			bool result =
144#endif
145			poseView->FSNotification(item->NodeMonitor());
146			ASSERT(result);
147			delete item;
148		} else
149			index++;
150	}
151}
152