1 | // License: GPL. For details, see LICENSE file.
|
---|
2 | package org.openstreetmap.josm.gui.dialogs.relation;
|
---|
3 |
|
---|
4 | import java.awt.Point;
|
---|
5 | import java.awt.event.WindowAdapter;
|
---|
6 | import java.awt.event.WindowEvent;
|
---|
7 | import java.util.HashMap;
|
---|
8 | import java.util.Iterator;
|
---|
9 | import java.util.Map.Entry;
|
---|
10 |
|
---|
11 | import org.openstreetmap.josm.data.osm.Relation;
|
---|
12 | import org.openstreetmap.josm.gui.MapView;
|
---|
13 | import org.openstreetmap.josm.gui.layer.Layer;
|
---|
14 | import org.openstreetmap.josm.gui.layer.OsmDataLayer;
|
---|
15 |
|
---|
16 | /**
|
---|
17 | * RelationDialogManager keeps track of the open relation editors.
|
---|
18 | *
|
---|
19 | */
|
---|
20 | public class RelationDialogManager extends WindowAdapter implements MapView.LayerChangeListener{
|
---|
21 |
|
---|
22 | /** keeps track of open relation editors */
|
---|
23 | static RelationDialogManager relationDialogManager;
|
---|
24 |
|
---|
25 | /**
|
---|
26 | * Replies the singleton {@see RelationDialogManager}
|
---|
27 | *
|
---|
28 | * @return the singleton {@see RelationDialogManager}
|
---|
29 | */
|
---|
30 | static public RelationDialogManager getRelationDialogManager() {
|
---|
31 | if (RelationDialogManager.relationDialogManager == null) {
|
---|
32 | RelationDialogManager.relationDialogManager = new RelationDialogManager();
|
---|
33 | MapView.addLayerChangeListener(RelationDialogManager.relationDialogManager);
|
---|
34 | }
|
---|
35 | return RelationDialogManager.relationDialogManager;
|
---|
36 | }
|
---|
37 |
|
---|
38 | /**
|
---|
39 | * Helper class for keeping the context of a relation editor. A relation editor
|
---|
40 | * is open for a specific relation managed by a specific {@see OsmDataLayer}
|
---|
41 | *
|
---|
42 | */
|
---|
43 | static private class DialogContext {
|
---|
44 | public final Relation relation;
|
---|
45 | public final OsmDataLayer layer;
|
---|
46 |
|
---|
47 | public DialogContext(OsmDataLayer layer, Relation relation) {
|
---|
48 | this.layer = layer;
|
---|
49 | this.relation = relation;
|
---|
50 | }
|
---|
51 |
|
---|
52 | @Override
|
---|
53 | public int hashCode() {
|
---|
54 | final int prime = 31;
|
---|
55 | int result = 1;
|
---|
56 | result = prime * result + ((layer == null) ? 0 : layer.hashCode());
|
---|
57 | result = prime * result + ((relation == null) ? 0 : relation.hashCode());
|
---|
58 | return result;
|
---|
59 | }
|
---|
60 | @Override
|
---|
61 | public boolean equals(Object obj) {
|
---|
62 | if (this == obj)
|
---|
63 | return true;
|
---|
64 | if (obj == null)
|
---|
65 | return false;
|
---|
66 | if (getClass() != obj.getClass())
|
---|
67 | return false;
|
---|
68 | DialogContext other = (DialogContext) obj;
|
---|
69 | if (layer == null) {
|
---|
70 | if (other.layer != null)
|
---|
71 | return false;
|
---|
72 | } else if (!layer.equals(other.layer))
|
---|
73 | return false;
|
---|
74 | if (relation == null) {
|
---|
75 | if (other.relation != null)
|
---|
76 | return false;
|
---|
77 | } else if (!relation.equals(other.relation))
|
---|
78 | return false;
|
---|
79 | return true;
|
---|
80 | }
|
---|
81 |
|
---|
82 | public boolean matchesLayer(OsmDataLayer layer) {
|
---|
83 | if (layer == null) return false;
|
---|
84 | return this.layer.equals(layer);
|
---|
85 | }
|
---|
86 |
|
---|
87 | @Override
|
---|
88 | public String toString() {
|
---|
89 | return "[Context: layer=" + layer.getName() + ",relation=" + relation.getId() + "]";
|
---|
90 | }
|
---|
91 | }
|
---|
92 |
|
---|
93 | /** the map of open dialogs */
|
---|
94 | private final HashMap<DialogContext, RelationEditor> openDialogs;
|
---|
95 |
|
---|
96 | /**
|
---|
97 | * constructor
|
---|
98 | */
|
---|
99 | public RelationDialogManager(){
|
---|
100 | openDialogs = new HashMap<DialogContext, RelationEditor>();
|
---|
101 | }
|
---|
102 | /**
|
---|
103 | * Register the relation editor for a relation managed by a
|
---|
104 | * {@see OsmDataLayer}.
|
---|
105 | *
|
---|
106 | * @param layer the layer
|
---|
107 | * @param relation the relation
|
---|
108 | * @param editor the editor
|
---|
109 | */
|
---|
110 | public void register(OsmDataLayer layer, Relation relation, RelationEditor editor) {
|
---|
111 | if (relation == null) {
|
---|
112 | relation = new Relation();
|
---|
113 | }
|
---|
114 | DialogContext context = new DialogContext(layer, relation);
|
---|
115 | openDialogs.put(context, editor);
|
---|
116 | editor.addWindowListener(this);
|
---|
117 | }
|
---|
118 |
|
---|
119 | public void updateContext(OsmDataLayer layer, Relation relation, RelationEditor editor) {
|
---|
120 | // lookup the entry for editor and remove it
|
---|
121 | //
|
---|
122 | for (DialogContext context: openDialogs.keySet()) {
|
---|
123 | if (openDialogs.get(context) == editor) {
|
---|
124 | openDialogs.remove(context);
|
---|
125 | break;
|
---|
126 | }
|
---|
127 | }
|
---|
128 | // don't add a window listener. Editor is already known to the relation dialog manager
|
---|
129 | //
|
---|
130 | DialogContext context = new DialogContext(layer, relation);
|
---|
131 | openDialogs.put(context, editor);
|
---|
132 | }
|
---|
133 |
|
---|
134 | /**
|
---|
135 | * Closes the editor open for a specific layer and a specific relation.
|
---|
136 | *
|
---|
137 | * @param layer the layer
|
---|
138 | * @param relation the relation
|
---|
139 | */
|
---|
140 | public void close(OsmDataLayer layer, Relation relation) {
|
---|
141 | DialogContext context = new DialogContext(layer, relation);
|
---|
142 | RelationEditor editor = openDialogs.get(context);
|
---|
143 | if (editor != null) {
|
---|
144 | editor.setVisible(false);
|
---|
145 | }
|
---|
146 | }
|
---|
147 |
|
---|
148 | /**
|
---|
149 | * Replies true if there is an open relation editor for the relation managed
|
---|
150 | * by the given layer. Replies false if relation is null.
|
---|
151 | *
|
---|
152 | * @param layer the layer
|
---|
153 | * @param relation the relation. May be null.
|
---|
154 | * @return true if there is an open relation editor for the relation managed
|
---|
155 | * by the given layer; false otherwise
|
---|
156 | */
|
---|
157 | public boolean isOpenInEditor(OsmDataLayer layer, Relation relation) {
|
---|
158 | if (relation == null) return false;
|
---|
159 | DialogContext context = new DialogContext(layer, relation);
|
---|
160 | return openDialogs.keySet().contains(context);
|
---|
161 |
|
---|
162 | }
|
---|
163 |
|
---|
164 | /**
|
---|
165 | * Replies the editor for the relation managed by layer. Null, if no such editor
|
---|
166 | * is currently open. Returns null, if relation is null.
|
---|
167 | *
|
---|
168 | * @param layer the layer
|
---|
169 | * @param relation the relation
|
---|
170 | * @return the editor for the relation managed by layer. Null, if no such editor
|
---|
171 | * is currently open.
|
---|
172 | *
|
---|
173 | * @see #isOpenInEditor(OsmDataLayer, Relation)
|
---|
174 | */
|
---|
175 | public RelationEditor getEditorForRelation(OsmDataLayer layer, Relation relation) {
|
---|
176 | if (relation == null) return null;
|
---|
177 | DialogContext context = new DialogContext(layer, relation);
|
---|
178 | return openDialogs.get(context);
|
---|
179 | }
|
---|
180 |
|
---|
181 | /**
|
---|
182 | * called when a layer is removed
|
---|
183 | *
|
---|
184 | */
|
---|
185 | public void layerRemoved(Layer oldLayer) {
|
---|
186 | if (oldLayer == null || ! (oldLayer instanceof OsmDataLayer))
|
---|
187 | return;
|
---|
188 | OsmDataLayer dataLayer = (OsmDataLayer)oldLayer;
|
---|
189 |
|
---|
190 | Iterator<Entry<DialogContext,RelationEditor>> it = openDialogs.entrySet().iterator();
|
---|
191 | while(it.hasNext()) {
|
---|
192 | Entry<DialogContext,RelationEditor> entry = it.next();
|
---|
193 | if (entry.getKey().matchesLayer(dataLayer)) {
|
---|
194 | RelationEditor editor = entry.getValue();
|
---|
195 | it.remove();
|
---|
196 | editor.setVisible(false);
|
---|
197 | editor.dispose();
|
---|
198 | }
|
---|
199 | }
|
---|
200 | }
|
---|
201 |
|
---|
202 | public void activeLayerChange(Layer oldLayer, Layer newLayer) {
|
---|
203 | // do nothing
|
---|
204 | }
|
---|
205 |
|
---|
206 | public void layerAdded(Layer newLayer) {
|
---|
207 | // do nothing
|
---|
208 | }
|
---|
209 |
|
---|
210 | @Override
|
---|
211 | public void windowClosed(WindowEvent e) {
|
---|
212 | RelationEditor editor = (RelationEditor)e.getWindow();
|
---|
213 | DialogContext context = null;
|
---|
214 | for (DialogContext c : openDialogs.keySet()) {
|
---|
215 | if (editor.equals(openDialogs.get(c))) {
|
---|
216 | context = c;
|
---|
217 | break;
|
---|
218 | }
|
---|
219 | }
|
---|
220 | if (context != null) {
|
---|
221 | openDialogs.remove(context);
|
---|
222 | }
|
---|
223 | }
|
---|
224 |
|
---|
225 | /**
|
---|
226 | * Replies true, if there is another open {@see RelationEditor} whose
|
---|
227 | * upper left corner is close to <code>p</code>.
|
---|
228 | *
|
---|
229 | * @param p the reference point to check
|
---|
230 | * @return true, if there is another open {@see RelationEditor} whose
|
---|
231 | * upper left corner is close to <code>p</code>.
|
---|
232 | */
|
---|
233 | protected boolean hasEditorWithCloseUpperLeftCorner(Point p, RelationEditor thisEditor) {
|
---|
234 | for (RelationEditor editor: openDialogs.values()) {
|
---|
235 | if (editor == thisEditor) {
|
---|
236 | continue;
|
---|
237 | }
|
---|
238 | Point corner = editor.getLocation();
|
---|
239 | if (p.x >= corner.x -5 && corner.x + 5 >= p.x
|
---|
240 | && p.y >= corner.y -5 && corner.y + 5 >= p.y)
|
---|
241 | return true;
|
---|
242 | }
|
---|
243 | return false;
|
---|
244 | }
|
---|
245 |
|
---|
246 | /**
|
---|
247 | * Positions a {@see RelationEditor} on the screen. Tries to center it on the
|
---|
248 | * screen. If it hide another instance of an editor at the same position this
|
---|
249 | * method tries to reposition <code>editor</code> by moving it slightly down and
|
---|
250 | * slightly to the right.
|
---|
251 | *
|
---|
252 | * @param editor the editor
|
---|
253 | */
|
---|
254 | public void positionOnScreen(RelationEditor editor) {
|
---|
255 | if (editor == null) return;
|
---|
256 | if (!openDialogs.isEmpty()) {
|
---|
257 | Point corner = editor.getLocation();
|
---|
258 | while(hasEditorWithCloseUpperLeftCorner(corner, editor)) {
|
---|
259 | // shift a little, so that the dialogs are not exactly on top of each other
|
---|
260 | corner.x += 20;
|
---|
261 | corner.y += 20;
|
---|
262 | }
|
---|
263 | editor.setLocation(corner);
|
---|
264 | }
|
---|
265 | }
|
---|
266 |
|
---|
267 | }
|
---|