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package com.jgraph.example.groupeditor;
import java.awt.Component;
import java.awt.event.MouseEvent;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import javax.swing.event.MouseInputAdapter;
import org.jgraph.JGraph;
import org.jgraph.graph.CellView;
/**
* Mananges the edition of the groups
* @see com.jgraph.example.JGraphFoldingManager
*/
public class GroupManager extends MouseInputAdapter {
/**
* Called when the mouse button is released to see if a collapse or expand
* request has been made
*/
public void mouseReleased(MouseEvent e) {
if (e.getSource() instanceof JGraph) {
final JGraph graph = (JGraph) e.getSource();
getGroupByFoldingHandle(graph, e.getPoint());
e.consume();
}
}
/**
* Called when the mouse button is released to see if a collapse or expand
* request has been made
*/
public static CellView getGroupByFoldingHandle(JGraph graph, Point2D pt) {
CellView[] views = graph.getGraphLayoutCache().getCellViews();
for (int i = 0; i < views.length; i++) {
if (views[i].getBounds().contains(pt.getX(), pt.getY())) {
Rectangle2D rectBounds = views[i].getBounds();
Point2D containerPoint = graph.fromScreen((Point2D) pt.clone());
containerPoint.setLocation(containerPoint.getX()
- rectBounds.getX(), containerPoint.getY()
- rectBounds.getY());
Component renderer = views[i].getRendererComponent(graph,
false, false, false);
if (renderer instanceof EditableGroupRenderer) {
Object[] list = {views[i].getCell()};
graph.getGraphLayoutCache().toFront(list);
graph.getGraphLayoutCache().refresh(views[i], false);
EditableGroupRenderer group = (EditableGroupRenderer) renderer;
if (group.isEditAsked(containerPoint, rectBounds)) {
graph.startEditingAtCell(views[i].getCell());
}
}
}
}
return null;
}
}
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