/* Copyright (C) 2005-2011 Fabio Riccardi */
package com.lightcrafts.ui.templates;
import com.lightcrafts.utils.xml.XmlNode;
import javax.swing.event.MouseInputAdapter;
import javax.swing.tree.TreeNode;
import javax.swing.tree.TreePath;
import java.awt.*;
import java.awt.event.MouseEvent;
import java.util.LinkedList;
/**
* Follow mouse motion on the TemplateTree and update the TemplatePreview and the
* TemplateTreeNode preview highlights.
*/
class TemplatePreviewMouseListener extends MouseInputAdapter {
private TemplateTree tree;
private TemplatePreview preview;
private TemplateTreeNode previewNode;
TemplatePreviewMouseListener(TemplateTree tree, TemplatePreview preview) {
this.tree = tree;
this.preview = preview;
}
public void mouseMoved(MouseEvent e) {
Point p = e.getPoint();
TreePath path = tree.getPathForLocation(p.x, p.y);
if (path != null) {
Object last = path.getLastPathComponent();
if (last instanceof TemplateTreeNode) {
TemplateTreeNode node = (TemplateTreeNode) last;
XmlNode xml = node.node;
preview.showTemplatePreview(xml);
setPreviewNode((TemplateTreeNode) last);
}
else {
preview.showNormalPreview();
setPreviewNode(null);
}
}
else {
preview.showNormalPreview();
setPreviewNode(null);
}
}
public void mouseExited(MouseEvent e) {
preview.showNormalPreview();
setPreviewNode(null);
}
private void setPreviewNode(TemplateTreeNode node) {
if ((previewNode != null) && (previewNode != node)) {
previewNode.setPreviewed(false);
repaintTreeNode(previewNode);
}
previewNode = node;
if (previewNode != null) {
previewNode.setPreviewed(true);
repaintTreeNode(previewNode);
}
}
private void repaintTreeNode(TreeNode node) {
LinkedList<Object> objects = new LinkedList<Object>();
while (node != null) {
objects.addFirst(node);
node = node.getParent();
}
TreePath path = new TreePath(objects.toArray());
Rectangle rect = tree.getPathBounds(path);
tree.repaint(rect);
}
}