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
|
/*******************************************************************************
* Copyright (c) 2004, 2011 Tasktop Technologies and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Tasktop Technologies - initial API and implementation
*******************************************************************************/
package org.eclipse.mylyn.internal.tasks.core;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import java.util.concurrent.CopyOnWriteArrayList;
import org.eclipse.core.runtime.Assert;
import org.eclipse.core.runtime.PlatformObject;
import org.eclipse.mylyn.tasks.core.IRepositoryElement;
import org.eclipse.mylyn.tasks.core.ITask;
import org.eclipse.mylyn.tasks.core.ITask.PriorityLevel;
import org.eclipse.mylyn.tasks.core.ITaskContainer;
/**
* Top-level Task List element that can contain other Task List elements.
*
* @author Mik Kersten
*/
public abstract class AbstractTaskContainer extends PlatformObject implements IRepositoryElement, ITaskContainer {
private String handleIdentifier = ""; //$NON-NLS-1$
private final Collection<ITask> children = new CopyOnWriteArrayList<ITask>();
/**
* Optional URL corresponding to the web resource associated with this container.
*/
private String url;
public AbstractTaskContainer(String handleAndDescription) {
Assert.isNotNull(handleAndDescription);
this.handleIdentifier = handleAndDescription;
}
/**
* Use {@link TaskList} methods instead.
*/
public void internalAddChild(AbstractTask task) {
Assert.isNotNull(task);
children.add(task);
}
/**
* Use {@link TaskList} methods instead.
*
* @return
* @since 3.0
*/
public boolean internalRemoveChild(ITask task) {
return children.remove(task);
}
/**
* Removes any cyclic dependencies in children. TODO: review to make sure that this is too expensive, or move to
* creation.
*
* @since 3.0
*/
public Collection<ITask> getChildren() {
return Collections.unmodifiableCollection(children);
}
/**
* Maxes out at a depth of 10. TODO: review policy
*/
public boolean contains(String handle) {
Assert.isNotNull(handle);
return containsHelper(children, handle, new HashSet<IRepositoryElement>());
}
private boolean containsHelper(Collection<ITask> children, String handle, Set<IRepositoryElement> visitedContainers) {
for (ITask child : children) {
if (visitedContainers.contains(child)) {
continue;
}
visitedContainers.add(child);
if (child instanceof ITaskContainer) {
if (handle.equals(child.getHandleIdentifier())
|| containsHelper(((ITaskContainer) child).getChildren(), handle, visitedContainers)) {
return true;
}
}
}
return false;
}
public String getSummary() {
return handleIdentifier;
}
public boolean isEmpty() {
return children.isEmpty();
}
public String getHandleIdentifier() {
return handleIdentifier;
}
public void setHandleIdentifier(String handleIdentifier) {
this.handleIdentifier = handleIdentifier;
}
@Override
public int hashCode() {
return handleIdentifier.hashCode();
}
public void setUrl(String url) {
this.url = url;
}
/**
* @return can be null
*/
public String getUrl() {
return url;
}
@Override
public boolean equals(Object object) {
if (object == null) {
return false;
}
if (object instanceof AbstractTaskContainer) {
IRepositoryElement compare = (IRepositoryElement) object;
return this.getHandleIdentifier().equals(compare.getHandleIdentifier());
} else {
return false;
}
}
@Override
public String toString() {
return "container: " + handleIdentifier; //$NON-NLS-1$
}
public String getPriority() {
String highestPriority = PriorityLevel.P5.toString();
Collection<ITask> tasks = getChildren();
if (tasks.isEmpty()) {
return PriorityLevel.P1.toString();
}
for (ITask task : tasks) {
if (highestPriority.compareTo(task.getPriority()) > 0) {
highestPriority = task.getPriority();
}
}
return highestPriority;
}
/**
* The handle for most containers is their summary. Override to specify a different natural ordering.
*/
public int compareTo(IRepositoryElement taskListElement) {
return getHandleIdentifier().compareTo(taskListElement.getHandleIdentifier());
}
/**
* If false, user is unable to manipulate (i.e. rename/delete), no preferences are available.
*
* @since 2.3
*/
public boolean isUserManaged() {
return true;
}
}
|
