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1 package Map;
2
3 public class PointManagerImpl
4 extends PointManagerPOA
5 {
6 private Point[] _points = new Point[256];
7 private int _num_points;
8 private String  _manager_name;
9 private boolean _verbose;
10
11 public PointManagerImpl(String manager_name, boolean verbose)
12 {
13 _manager_name = manager_name;
14 _num_points = 0;
15 _verbose = verbose;
16 }
17
18 public Point create_point (int x, int y, String lab, boolean connectable)
19 throws DuplicatePoint, InvalidPoint
20 {
21 if (lab == null) {
22 throw new InvalidPoint();
23 }
24
25 if (_verbose)
26 {
27 String connect_string = (connectable ? "connected" : "disconnected");
28 System.out.println("PointManager::creating [" + connect_string +
29 "] point for [" + lab + ", " + x + ", " + y + "]");
30 }
31
32 Point the_p = _find_point(lab);
33 if (the_p != null) {
34 throw new DuplicatePoint();
35 }
36
37 Point[] empty_points = new Point[0];
38 if (connectable) {
39 the_p = new ConnectedPointImpl(x, y, lab, empty_points);
40 }
41 else {
42 the_p = new PointImpl(x, y, lab);
43 }
44
45 _add_point(the_p);
46
47 if (_verbose) {
48 System.out.println("PointManager::created [" + the_p + "]");
49 }
50
51 return the_p;
52 }
53
54 public Point get_point (String lab)
55 throws UnknownPoint, InvalidPoint
56 {
57 if (lab == null) {
58 throw new InvalidPoint();
59 }
60
61 Point the_p = _find_point(lab);
62
63 if (the_p == null)
64 {
65 throw new UnknownPoint();
66 }
67 return the_p;
68 }
69
70 public void destroy_point (String lab)
71 throws UnknownPoint, InvalidPoint
72 {
73 if (lab == null) {
74 throw new InvalidPoint();
75 }
76
77 if (_verbose) {
78 System.out.println("PointManager::destroy_point for [" + lab + "]");
79 }
80
81 if (!_remove_point(lab)) {
82 throw new UnknownPoint();
83 }
84 }
85
86 public Point[] list_points (int scaling_factor)
87 {
88 if (_verbose)
89 {
90 System.out.println("PointManager::list_points with scaling [" +
91 scaling_factor + "]");
92 }
93
94 Point[] ret = new Point[_num_points ];
96
97 for (int i = 0; i < _num_points; i++)
98 {
99 ret[i] = _points[i];
100 }
105 return ret;
106 }
107
108 public void connect_point (String lab, String [] connectTo)
109 throws UnknownPoint, InvalidPoint
110 {
111 if (lab == null) {
112 throw new InvalidPoint();
113 }
114
115 Point the_p = _find_point(lab);
116 if (the_p == null) {
117 throw new UnknownPoint();
118 }
119
120 if (!(the_p instanceof ConnectedPoint)) {
121 throw new InvalidPoint();
122 }
123
124 ConnectedPoint the_cp = (ConnectedPoint)the_p;
125
126 for (int i = 0; i < connectTo.length; i++) {
127 Point target = _find_point(connectTo[i]);
128 if (target == null) {
129 throw new UnknownPoint(lab);
130 }
131 the_cp.add_connection(target);
132 }
133 }
134
135 public String get_name() {
136 return _manager_name;
137 }
138
139 private int _find(String label)
140 {
141
142 int i;
143 for (i = 0; i < _num_points; i++)
144 {
145 if (label.equals(_points[i].label))
146 {
147 break;
148 }
149 }
150 return i;
151 }
152
153 private boolean _remove_point(String label)
154 {
155 int index = _find(label);
156 if (index < _num_points)
157 {
158 if (index < _num_points-1)
159 {
160 _points[index] = _points[_num_points-1];
161 }
162 else
163 {
164 _points[index] = null;
165 }
166 _num_points--;
167 return true;
168 }
169 else
170 {
171 return false;
172 }
173 }
174
175 private Point _find_point(String label)
176 {
177 int index = _find(label);
178 if (index < _num_points)
179 {
180 return _points[index];
181 }
182 return null;
183 }
184
185 private void _add_point(Point p) {
186 if (_num_points < 256) {
187 _points[_num_points++] = p;
188 }
189 }
190 }
191 |
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