TreeLineselection - Versionsgeschichte

L-ectron-X am 8. März 2020 um 14:56 Uhr

2020-03-08T14:56:55Z

← Nächstältere Version		Version vom 8. März 2020, 14:56 Uhr
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	import javax.swing.*;		import javax.swing.*;

	public class LineTreeDemo ~~extends JFrame~~ {		public class LineTreeDemo {

	final private JTree tree;		final private JTree tree;

	public LineTreeDemo() {		public LineTreeDemo() {
	~~super~~("Tree Lineselection");		JFrame frame = new JFrame("Tree Lineselection");
	setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);		frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
	setSize(400, 300);		frame.setSize(400, 300);
	setLocationRelativeTo(null);		frame.setLocationRelativeTo(null);
	tree = new LineTree();		tree = new LineTree();
	add(new JScrollPane(tree));		frame.add(new JScrollPane(tree));
			frame.setVisible(true);
	}		}

	public static void main(final String args[]) throws Exception {		public static void main(final String args[]) throws Exception {
	new LineTreeDemo(~~).setVisible(true~~);		new LineTreeDemo();
	}		}
	}		}

L-ectron-X am 8. März 2020 um 14:53 Uhr

2020-03-08T14:53:38Z

← Nächstältere Version		Version vom 8. März 2020, 14:53 Uhr
Zeile 7:		Zeile 7:
	[[Datei:TreeLineselection.jpg]]		[[Datei:TreeLineselection.jpg]]

	<~~code~~=java>		<syntaxhighlight lang="java">
	import javax.swing.*;		import javax.swing.*;

Zeile 27:		Zeile 27:
	}		}
	}		}
	</~~code=java~~>		</syntaxhighlight>

	<~~code~~=java>		<syntaxhighlight lang="java">
	/*		/*
	* LineTree.java		* LineTree.java
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	}		}
	}		}
	</~~code=java~~>		</syntaxhighlight>
	[[Kategorie:Java]]		[[Kategorie:Java]]
	[[Kategorie:Swing]]		[[Kategorie:Swing]]
	[[Kategorie:Java-Codeschnipsel]]		[[Kategorie:Java-Codeschnipsel]]

AndreUhres am 6. September 2011 um 14:03 Uhr

2011-09-06T14:03:41Z

← Nächstältere Version		Version vom 6. September 2011, 14:03 Uhr
Zeile 1:		Zeile 1:
	<code=java>/*		Gewöhnlich wenn ein Knoten selektiert ist, hebt JTree nur den Text hervor:
	* TreeLineselection.~~java~~
	*		[[Datei:TreeSelection.jpg]]
	* Normally, ~~when a node is selected, the tree marks only the text.~~
	* This shows one way to mark the whole selected line in a JTree.		Hier wird eine Möglichkeit gezeigt, die ganze selektierte Zeile in einem JTree hervorzuheben:
	*/
			[[Datei:TreeLineselection.jpg]]

	~~import~~ java~~.awt.*;~~		<code=java>
	~~import java.awt.event.*;~~
	import javax.swing.*;		import javax.swing.*;
	~~import javax.swing.event.*;~~
	~~import javax.swing.tree.*;~~

	public class ~~TreeLineselection~~ extends JFrame {		public class LineTreeDemo extends JFrame {

	final private JTree tree;		final private JTree tree;

	public ~~TreeLineselection~~() {		public LineTreeDemo() {
	super("Tree Lineselection");		super("Tree Lineselection");
	setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);		setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
	setSize(400, 300);		setSize(400, 300);
	setLocationRelativeTo(null);		setLocationRelativeTo(null);
	tree = new ~~MyTree~~();		tree = new LineTree();
	add(new JScrollPane(tree));		add(new JScrollPane(tree));
	}		}

	public static void main(final String args[]) throws Exception {		public static void main(final String args[]) throws Exception {
	new ~~TreeLineselection~~().setVisible(true);		new LineTreeDemo().setVisible(true);
	}		}
	}		}
			</code=java>

	class ~~MyTree~~ extends JTree {		<code=java>
			/*
			* LineTree.java
			*
			* Normally, when a node is selected, the tree marks only the text.
			* This shows one way to mark the whole selected line in a JTree.
			*/

			import java.awt.*;
			import java.awt.event.*;
			import javax.swing.*;
			import javax.swing.event.*;
			import javax.swing.tree.*;


			public class LineTree extends JTree {

	final private Color SELECTION_COLOR = new Color(180, 210, 230, 90);		final private Color SELECTION_COLOR = new Color(180, 210, 230, 90);
	private Rectangle selectedRowBounds;		private Rectangle selectedRowBounds;
	private boolean expand;//allows the MouseListener to detect "handles" action (->no row selection)		private boolean expand;//allows the MouseListener to detect "handles" action (->no row selection)

	public ~~MyTree~~() {		public LineTree() {
	//Set the selection mode:		//Set the selection mode:
	selectionModel.setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);		selectionModel.setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
Zeile 46:		Zeile 60:
	//Add the TreeSelectionListener:		//Add the TreeSelectionListener:
	selectionModel.addTreeSelectionListener(new TreeSelectionListener() {		selectionModel.addTreeSelectionListener(new TreeSelectionListener() {

			@Override
	public void valueChanged(final TreeSelectionEvent e) {		public void valueChanged(final TreeSelectionEvent e) {
	paintSelectionRect();		paintSelectionRect();
Zeile 53:		Zeile 68:
	//Add the TreeExpansionListener:		//Add the TreeExpansionListener:
	addTreeExpansionListener(new TreeExpansionListener() {		addTreeExpansionListener(new TreeExpansionListener() {

			@Override
	public void treeCollapsed(final TreeExpansionEvent event) {		public void treeCollapsed(final TreeExpansionEvent event) {
	paintSelectionRect();		paintSelectionRect();
	expand = true;		expand = true;
	}		}

			@Override
	public void treeExpanded(final TreeExpansionEvent event) {		public void treeExpanded(final TreeExpansionEvent event) {
	paintSelectionRect();		paintSelectionRect();
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	//Add MouseListener if you want to listen to whole line width:		//Add MouseListener if you want to listen to whole line width:
	addMouseListener(new MouseAdapter() {		addMouseListener(new MouseAdapter() {

	@Override		@Override
	public void mousePressed(final MouseEvent e) {		public void mousePressed(final MouseEvent e) {
Zeile 84:		Zeile 101:
	}		}
	});		});

	}		}
	//This method is called in valueChanged, treeCollapsed and treeExpanded		//This method is called in valueChanged, treeCollapsed and treeExpanded
	//to paint the selection rectangle:		//to paint the selection rectangle:

	private void paintSelectionRect() {		private void paintSelectionRect() {
	//Get selected row bounds:		//Get selected row bounds:
Zeile 99:		Zeile 116:
	repaint();		repaint();
	}		}

	//Override paintComponent of JTree:		//Override paintComponent of JTree:
	@Override		@Override

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2009-12-14T20:51:17Z

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<code=java>/*
* TreeLineselection.java
*
* Normally, when a node is selected, the tree marks only the text.
* This shows one way to mark the whole selected line in a JTree.
*/

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.tree.*;

public class TreeLineselection extends JFrame {

final private JTree tree;

public TreeLineselection() {
super("Tree Lineselection");
setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
setSize(400, 300);
setLocationRelativeTo(null);
tree = new MyTree();
add(new JScrollPane(tree));
}

public static void main(final String args[]) throws Exception {
new TreeLineselection().setVisible(true);
}
}

class MyTree extends JTree {

final private Color SELECTION_COLOR = new Color(180, 210, 230, 90);
private Rectangle selectedRowBounds;
private boolean expand;//allows the MouseListener to detect "handles" action (->no row selection)

public MyTree() {
//Set the selection mode:
selectionModel.setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
//Adapt the default selection colors:
DefaultTreeCellRenderer renderer = (DefaultTreeCellRenderer) getCellRenderer();
renderer.setTextSelectionColor(Color.BLACK);
renderer.setBorderSelectionColor(Color.WHITE);
renderer.setBackgroundSelectionColor(Color.WHITE);
//Add the TreeSelectionListener:
selectionModel.addTreeSelectionListener(new TreeSelectionListener() {

public void valueChanged(final TreeSelectionEvent e) {
paintSelectionRect();
}
});
//Add the TreeExpansionListener:
addTreeExpansionListener(new TreeExpansionListener() {

public void treeCollapsed(final TreeExpansionEvent event) {
paintSelectionRect();
expand = true;
}

public void treeExpanded(final TreeExpansionEvent event) {
paintSelectionRect();
expand = true;
}
});
//Add MouseListener if you want to listen to whole line width:
addMouseListener(new MouseAdapter() {

@Override
public void mousePressed(final MouseEvent e) {
if (!expand) {
int row = getClosestRowForLocation(e.getX(), e.getY());
if (e.getClickCount() == 2) {
if (isCollapsed(row)) {
expandRow(row);
} else {
collapseRow(row);
}
} else {
setSelectionRow(row);
}
}
expand = false;
}
});

}
//This method is called in valueChanged, treeCollapsed and treeExpanded
//to paint the selection rectangle:

private void paintSelectionRect() {
//Get selected row bounds:
int[] rows = getSelectionRows();
if (rows == null) {
return;
}
selectedRowBounds = getRowBounds(rows[0]);
//Repaint the JTree:
repaint();
}

//Override paintComponent of JTree:
@Override
public void paintComponent(final Graphics g) {
super.paintComponent(g);
if (selectedRowBounds == null) {
return;
}
//Set selection Color:
g.setColor(SELECTION_COLOR);
//Draw selection rectangle using the width of JTree:
g.fillRect(0, (int) selectedRowBounds.getY(), getWidth(), (int) selectedRowBounds.getHeight());
}
}
</code=java>
[[Kategorie:Java]]
[[Kategorie:Swing]]
[[Kategorie:Java-Codeschnipsel]]