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1
18
19 package org.objectweb.jac.ide.diagrams;
20
21 import CH.ifa.draw.framework.DrawingEditor;
22 import CH.ifa.draw.framework.ConnectionFigure;
23 import CH.ifa.draw.framework.Figure;
24 import CH.ifa.draw.framework.FigureEnumeration;
25 import CH.ifa.draw.framework.Connector;
26 import CH.ifa.draw.framework.Drawing;
27
28 import CH.ifa.draw.util.Geom;
29
30 import org.objectweb.jac.ide.Class;
31 import org.objectweb.jac.util.Log;
32
33 import java.awt.Point  ;
34 import java.awt.event.MouseEvent ;
35 import java.util.Enumeration ;
36
37 public class RelationLinkCreationTool extends AbstractTool {
38
39
40 Connector myStartConnector;
41 Connector myEndConnector;
42 Connector myTargetConnector;
43
44 Figure myTarget;
45
46
47 LinkFigure myConnection;
48
49 public RelationLinkCreationTool(DrawingEditor newDrawingEditor) {
50 super(newDrawingEditor);
51 }
52
53
56 public void mouseMove(MouseEvent e, int x, int y) {
57 trackConnectors(e, x, y);
58 }
59
60
65 public void mouseDown(MouseEvent e, int x, int y)
66 {
67 Log.trace("diagram","mouseDown");
68 int ex = e.getX();
69 int ey = e.getY();
70 myTarget = findConnectionStart(ex, ey, drawing());
71 Log.trace("diagram","target figure = "+myTarget);
72 if (myTarget != null
73 && (myTarget.getClass()==ClassFigure.class ||
74 myTarget.getClass()==AspectFigure.class)) {
75 myStartConnector = findConnector(ex, ey, myTarget);
76 if (myStartConnector != null) {
77 Point p = new Point (ex, ey);
78 myConnection = createLinkFigure();
79 myConnection.startPoint(p.x, p.y);
80 myConnection.endPoint(p.x, p.y);
81 view().add(myConnection);
82 }
83 }
84 }
85
86 protected LinkFigure createLinkFigure() {
87 return new RelationLinkFigure();
88 }
89
90
93 public void mouseDrag(MouseEvent e, int x, int y) {
94 Log.trace("diagram",2,"mouseDrag "+x+","+y);
95 Point p = new Point (e.getX(), e.getY());
96 if (myConnection != null) {
97 trackConnectors(e, x, y);
98 if (myTargetConnector != null) {
99 p = Geom.center(myTargetConnector.displayBox());
100 }
101 myConnection.endPoint(p.x, p.y);
102 }
103 }
104
105
109 public void mouseUp(MouseEvent e, int x, int y) {
110 Log.trace("diagram","mouseUp "+x+","+y);
111 Log.trace("diagram"," myStartConnector="+myStartConnector);
112 ModelElementFigure dest = null;
113 if (myStartConnector != null) {
114 dest = findTarget(e.getX(), e.getY(), drawing());
115 Log.trace("diagram"," dest="+dest);
116 }
117
118 if (dest instanceof ClassFigure) {
119 myEndConnector = findConnector(e.getX(), e.getY(), dest);
120 Log.trace("diagram"," myEndConnector="+myEndConnector);
121 if (myEndConnector != null) {
122 myConnection.connectStart(myStartConnector);
123 myConnection.connectEnd(myEndConnector);
124 myConnection.updateConnection();
125 ClassFigure source = (ClassFigure)myStartConnector.owner();
126 createRelation(source.getClassElement(),
127 ((ClassFigure)dest).getClassElement());
128 }
129 }
130 else if (myConnection != null) {
131 ((DiagramView)editor()).showStatus(
132 "Invalid or empty ending element for relation.");
133 view().remove(myConnection);
134 }
135
136 myConnection = null;
137 myStartConnector = null;
138 myEndConnector = null;
139 editor().toolDone();
140 }
141
142
147 protected void createRelation(Class source, Class target) {
148 if (source != null && target != null) {
149 diagramView().createRelation(source,target,(RelationLinkFigure)myConnection,false);
150 view().clearSelection();
151 view().addToSelection(myConnection);
152 }
153 }
154
155 public void deactivate() {
156 super.deactivate();
157 if (myTarget != null) {
158 myTarget.connectorVisibility(false);
159 }
160 }
161
162
163
166 protected Figure findSource(int x, int y, Drawing drawing) {
167 return findConnectableFigure(x, y, drawing);
168 }
169
170
173 protected ModelElementFigure findTarget(int x, int y, Drawing drawing) {
174 ModelElementFigure target = findConnectableFigure(x, y, drawing);
175 Figure start = myStartConnector.owner();
176
177 if (target != null
178 && myConnection != null
179 && target.canConnect()
180 && myConnection.canConnect(start, target)) {
181 return target;
182 }
183 return null;
184 }
185
186
189 protected ConnectionFigure findConnection(int x, int y, Drawing drawing) {
190 Enumeration k = drawing.figuresReverse();
191 while (k.hasMoreElements()) {
192 Figure figure = (Figure) k.nextElement();
193 figure = figure.findFigureInside(x, y);
194 if (figure != null && (figure instanceof ConnectionFigure)) {
195 return (ConnectionFigure)figure;
196 }
197 }
198 return null;
199 }
200
201 protected void trackConnectors(MouseEvent e, int x, int y) {
202 Figure c = null;
203
204 if (myStartConnector == null) {
205 c = findSource(x, y, drawing());
206 }
207 else {
208 c = findTarget(x, y, drawing());
209 }
210
211 if (c != myTarget) {
213 if (myTarget != null) {
214 myTarget.connectorVisibility(false);
215 }
216 myTarget = c;
217 if (myTarget != null) {
218 myTarget.connectorVisibility(true);
219 }
220 }
221
222 Connector cc = null;
223 if (c != null) {
224 cc = findConnector(e.getX(), e.getY(), c);
225 }
226 if (cc != myTargetConnector) {
227 myTargetConnector = cc;
228 }
229
230 view().checkDamage();
231 }
232
233 private Connector findConnector(int x, int y, Figure f) {
234 return f.connectorAt(x, y);
235 }
236
237
240 protected Figure findConnectionStart(int x, int y, Drawing drawing) {
241 Figure target = findConnectableFigure(x, y, drawing);
242 if ((target != null) && target.canConnect()) {
243 return target;
244 }
245 return null;
246 }
247
248 private ModelElementFigure findConnectableFigure(
249 int x, int y, Drawing drawing)
250 {
251 FigureEnumeration k = drawing.figuresReverse();
252 while (k.hasMoreElements()) {
253 Figure figure = k.nextFigure();
254 if (!figure.includes(myConnection) && figure.canConnect()
255 && figure.containsPoint(x, y)) {
256 return (ModelElementFigure)figure;
257 }
258 }
259 return null;
260 }
261
262 }
263 |
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