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improve drag&drop

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This commit is contained in:
Branislav Stojkovic
2019-02-03 19:37:38 +01:00
parent 3027753225
commit 81b299865c
5 changed files with 45 additions and 19 deletions
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diylc/diylc-swing/src/org/diylc/swing/plugins/tree/TreeGestureListener.java
+31 -13
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@@ -25,6 +25,7 @@ import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.TreePath;
import org.diylc.common.ComponentType;
import org.diylc.common.IPlugInPort;
import org.diylc.swing.plugins.canvas.EmptyTransferable;
import org.diylc.swing.plugins.tree.TreePanel.Payload;
@@ -45,20 +46,37 @@ class TreeGestureListener implements DragGestureListener {
@Override
public void dragGestureRecognized(DragGestureEvent dge) {
JTree tree = (JTree) dge.getComponent();
Point p = dge.getDragOrigin();
TreePath path = tree.getClosestPathForLocation(p.x, p.y);
if (path != null && path.getLastPathComponent() instanceof DefaultMutableTreeNode) {
DefaultMutableTreeNode leaf = (DefaultMutableTreeNode)path.getLastPathComponent();
Payload payload = (Payload) leaf.getUserObject();
if (payload != null && (payload.getComponentType() != null || payload.getClickListener() != null)) {
if (payload.getComponentType() != null)
presenter.setNewComponentTypeSlot(payload.getComponentType(), null, true);
else
payload.getClickListener().mouseClicked(null);
dge.startDrag(presenter.getCursorAt(dge.getDragOrigin()), new EmptyTransferable(), new TreeSourceListener(
presenter));
ComponentType type = null;
Payload payload = null;
if (presenter.getNewComponentTypeSlot() == null) {
JTree tree = (JTree) dge.getComponent();
Point p = dge.getDragOrigin();
TreePath path = tree.getClosestPathForLocation(p.x, p.y);
if (path != null && path.getLastPathComponent() instanceof DefaultMutableTreeNode) {
DefaultMutableTreeNode leaf = (DefaultMutableTreeNode) path.getLastPathComponent();
payload = (Payload) leaf.getUserObject();
if (payload != null && (payload.getComponentType() != null || payload.getClickListener() != null))
type = payload.getComponentType();
}
} else {
type = presenter.getNewComponentTypeSlot();
}
boolean start = false;
if (type == null)
{
if (payload != null && payload.getClickListener() != null) {
payload.getClickListener().mouseClicked(null);
start = true;
}
}
else {
presenter.setNewComponentTypeSlot(type, null, true);
start = true;
}
if (start)
dge.startDrag(presenter.getCursorAt(dge.getDragOrigin()), new EmptyTransferable(),
new TreeSourceListener(presenter));
}
}