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1
11
12 package org.eclipse.ui.views.bookmarkexplorer;
13
14 import org.eclipse.core.resources.IMarker;
15 import org.eclipse.core.runtime.CoreException;
16 import org.eclipse.jface.dialogs.IDialogSettings;
17 import org.eclipse.jface.viewers.Viewer;
18 import org.eclipse.jface.viewers.ViewerComparator;
19
20 class BookmarkSorter extends ViewerComparator {
21
22 private int[] directions;
23
24 private int[] priorities;
25
26 final static int ASCENDING = 1;
27
28 final static int DESCENDING = -1;
29
30 final static int DESCRIPTION = 0;
31
32 final static int RESOURCE = 1;
33
34 final static int FOLDER = 2;
35
36 final static int LOCATION = 3;
37
38 final static int CREATION_TIME = 4;
39
40 final static int[] DEFAULT_PRIORITIES = { FOLDER, RESOURCE, LOCATION,
41 DESCRIPTION, CREATION_TIME };
42
43 final static int[] DEFAULT_DIRECTIONS = { ASCENDING, ASCENDING, ASCENDING, ASCENDING, ASCENDING, };
49 public BookmarkSorter() {
50 resetState();
51 }
52
53 public void reverseTopPriority() {
54 directions[priorities[0]] *= -1;
55 }
56
57 public void setTopPriority(int priority) {
58 if (priority < 0 || priority >= priorities.length) {
59 return;
60 }
61
62 int index = -1;
63 for (int i = 0; i < priorities.length; i++) {
64 if (priorities[i] == priority) {
65 index = i;
66 }
67 }
68
69 if (index == -1) {
70 resetState();
71 return;
72 }
73
74 for (int i = index; i > 0; i--) {
76 priorities[i] = priorities[i - 1];
77 }
78 priorities[0] = priority;
79 directions[priority] = DEFAULT_DIRECTIONS[priority];
80 }
81
82 public void setTopPriorityDirection(int direction) {
83 if (direction == ASCENDING || direction == DESCENDING) {
84 directions[priorities[0]] = direction;
85 }
86 }
87
88 public int getTopPriorityDirection() {
89 return directions[priorities[0]];
90 }
91
92 public int getTopPriority() {
93 return priorities[0];
94 }
95
96 public int[] getPriorities() {
97 return priorities;
98 }
99
100 public void resetState() {
101 priorities = new int[DEFAULT_PRIORITIES.length];
102 System.arraycopy(DEFAULT_PRIORITIES, 0, priorities, 0,
103 priorities.length);
104 directions = new int[DEFAULT_DIRECTIONS.length];
105 System.arraycopy(DEFAULT_DIRECTIONS, 0, directions, 0,
106 directions.length);
107 }
108
109 private int compare(IMarker marker1, IMarker marker2, int depth) {
110 if (depth >= priorities.length) {
111 return 0;
112 }
113
114 int column = priorities[depth];
115 switch (column) {
116 case DESCRIPTION: {
117 String  desc1 = marker1.getAttribute(IMarker.MESSAGE, ""); String desc2 = marker2.getAttribute(IMarker.MESSAGE, ""); int result = getComparator().compare(desc1, desc2);
120 if (result == 0) {
121 return compare(marker1, marker2, depth + 1);
122 }
123 return result * directions[column];
124 }
125 case RESOURCE: {
126 String res1 = marker1.getResource().getName();
127 String res2 = marker2.getResource().getName();
128 int result = getComparator().compare(res1, res2);
129 if (result == 0) {
130 return compare(marker1, marker2, depth + 1);
131 }
132 return result * directions[column];
133 }
134 case FOLDER: {
135 String folder1 = BookmarkLabelProvider.getContainerName(marker1);
136 String folder2 = BookmarkLabelProvider.getContainerName(marker2);
137 int result = getComparator().compare(folder1, folder2);
138 if (result == 0) {
139 return compare(marker1, marker2, depth + 1);
140 }
141 return result * directions[column];
142 }
143 case LOCATION: {
144 int line1 = marker1.getAttribute(IMarker.LINE_NUMBER, -1);
145 int line2 = marker2.getAttribute(IMarker.LINE_NUMBER, -1);
146 int result = line1 - line2;
147 if (result == 0) {
148 return compare(marker1, marker2, depth + 1);
149 }
150 return result * directions[column];
151 }
152 case CREATION_TIME: {
153 long result;
154 try {
155 result = marker1.getCreationTime() - marker2.getCreationTime();
156 } catch (CoreException e) {
157 result = 0;
158 }
159 if (result == 0) {
160 return compare(marker1, marker2, depth + 1);
161 }
162 return ((int) result) * directions[column];
163 }
164 }
165
166 return 0;
167 }
168
169 public int compare(Viewer viewer, Object e1, Object e2) {
170 IMarker marker1 = (IMarker) e1;
171 IMarker marker2 = (IMarker) e2;
172
173 return compare(marker1, marker2, 0);
174 }
175
176 public void saveState(IDialogSettings settings) {
177 if (settings == null) {
178 return;
179 }
180
181 for (int i = 0; i < priorities.length; i++) {
182 settings.put("priority" + i, priorities[i]); settings.put("direction" + i, directions[i]); }
185 }
186
187 public void restoreState(IDialogSettings settings) {
188 if (settings == null) {
189 return;
190 }
191
192 try {
193 for (int i = 0; i < priorities.length; i++) {
194 priorities[i] = settings.getInt("priority" + i); directions[i] = settings.getInt("direction" + i); }
197 } catch (NumberFormatException e) {
198 resetState();
199 }
200 }
201 }
202 |
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