问题
Still a Java newbie here, trying to stuff far too advanced for my own good. Nevertheless, here's what I need done: A checkbox within a JXTreeTable. My main class:
package info.chrismcgee.sky.production;
import info.chrismcgee.sky.production.treetable.NoRootTreeTableModel;
import java.awt.Checkbox;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.util.ArrayList;
import java.util.List;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.ScrollPaneConstants;
import javax.swing.border.EmptyBorder;
import javax.swing.border.EtchedBorder;
import net.miginfocom.swing.MigLayout;
import org.jdesktop.swingx.JXTreeTable;
public class TestFrame extends JFrame {
/**
*
*/
private static final long serialVersionUID = -1899673458785493250L;
private JXTreeTable treeTable;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
TestFrame frame = new TestFrame();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public TestFrame() {
setMinimumSize(new Dimension(600, 600));
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 546, 600);
JPanel contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(new MigLayout("", "[grow][grow][grow][100px:n,grow][grow][grow][grow]", "[][251.00,grow][]"));
List<Job> jobList = new ArrayList<Job>();
List<ItemDetail> itemList = new ArrayList<ItemDetail>();
itemList.add(new ItemDetail("N10", "N10", 2, 1000, PrintType.PAD, true));
itemList.add(new ItemDetail("N13", "N13", 2, 2000, PrintType.PAD, true));
// create and add the first job with its list of ItemDetail objects
jobList.add(new Job(new Checkbox("Print Solutions"), "123456", ShipDate.getDate("02/28/14"), itemList));
List<ItemDetail> itemList2 = new ArrayList<ItemDetail>();
itemList2.add(new ItemDetail("P12", "Green", 1, 250, PrintType.SCREEN, true));
itemList2.add(new ItemDetail("P12", "Purple", 1, 250, PrintType.SCREEN, true));
itemList2.add(new ItemDetail("P12", "Gray", 1, 250, PrintType.SCREEN, true));
// create and add a second job with its list of ItemDetail objects
jobList.add(new Job(new Checkbox("Innovators Inc"), "246801", ShipDate.getDate("03/10/14"), itemList2));
// we use a no root model
NoRootTreeTableModel noRootTreeTableModel = new NoRootTreeTableModel(jobList);
treeTable = new JXTreeTable(noRootTreeTableModel);
treeTable.setEditable(false);
treeTable.setRootVisible(false);
treeTable.setBorder(new EtchedBorder(EtchedBorder.LOWERED, null, null));
treeTable.getTableHeader().setReorderingAllowed(false);
treeTable.getColumn(0).setPreferredWidth(200);
treeTable.getColumn(1).setPreferredWidth(75);
treeTable.getColumn(2).setPreferredWidth(15);
treeTable.getColumn(2).setMinWidth(15);
treeTable.getColumn(2).setMaxWidth(15);
treeTable.getColumn(3).setPreferredWidth(50);
treeTable.getColumn(3).setMaxWidth(50);
treeTable.getColumn(4).setPreferredWidth(25);
JScrollPane scrollPane = new JScrollPane(treeTable);
scrollPane.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
contentPane.add(scrollPane, "cell 0 1 7 1,grow");
}
}
The Job class (Branches in the TreeTable):
package info.chrismcgee.sky.production;
import java.awt.Checkbox;
import java.util.List;
import org.joda.time.LocalDate;
public class Job {
private Checkbox cbJob;
private String idNumber;
private LocalDate shipDate;
private List<ItemDetail> itemList;
public Job(Checkbox cbJob, String idNumber, LocalDate shipDate, List<ItemDetail> itemList)
{
this.cbJob = cbJob;
this.idNumber = idNumber;
this.shipDate = shipDate;
this.itemList = itemList;
}
public List<ItemDetail> getItemList()
{
return itemList;
}
public void setItemList(List<ItemDetail> itemList)
{
this.itemList = itemList;
}
/**
* @return the cbJob
*/
public Checkbox getCbJob() {
return cbJob;
}
/**
* @param cbJob the cbJob to set
*/
public void setCbJob(Checkbox cbJob) {
this.cbJob = cbJob;
}
/**
* @return the idNumber
*/
public String getIdNumber() {
return idNumber;
}
/**
* @param idNumber the idNumber to set
*/
public void setIdNumber(String idNumber) {
this.idNumber = idNumber;
}
/**
* @return the shipDate
*/
public LocalDate getShipDate() {
return shipDate;
}
/**
* @param shipDate the shipDate to set
*/
public void setShipDate(LocalDate shipDate) {
this.shipDate = shipDate;
}
}
The OrderDetail class (Leaves in the TreeTable):
package info.chrismcgee.sky.production;
public class ItemDetail {
private String productId;
private String detail;
private long numColors;
private long numQuantity;
private PrintType printType;
private boolean active;
public ItemDetail(String productId, String detail, long numColors, long numQuantity, PrintType printType, boolean active)
{
this.productId = productId;
this.detail = detail;
this.numColors = numColors;
this.numQuantity = numQuantity;
this.printType = printType;
this.active = active;
}
/**
* @return the productId
*/
public String getProductId() {
return productId;
}
/**
* @param productId the productId to set
*/
public void setProductId(String productId) {
this.productId = productId;
}
/**
* @return the detail
*/
public String getDetail() {
return detail;
}
/**
* @param detail the detail to set
*/
public void setDetail(String detail) {
this.detail = detail;
}
/**
* @return the numColors
*/
public long getNumColors() {
return numColors;
}
/**
* @param numColors the numColors to set
*/
public void setNumColors(long numColors) {
this.numColors = numColors;
}
/**
* @return the numQuantity
*/
public long getNumQuantity() {
return numQuantity;
}
/**
* @param numQuantity the numQuantity to set
*/
public void setNumQuantity(long numQuantity) {
this.numQuantity = numQuantity;
}
/**
* @return the printType
*/
public PrintType getPrintType() {
return printType;
}
/**
* @param printType the printType to set
*/
public void setPrintType(PrintType printType) {
this.printType = printType;
}
/**
* @return the active
*/
public boolean isActive() {
return active;
}
/**
* @param active the active to set
*/
public void setActive(boolean active) {
this.active = active;
}
}
and, finally, the NoRootTreeTableModel class, which extends the AbstractTreeTableModel class, so that the root of the tree isn't shown:
package info.chrismcgee.sky.production.treetable;
import info.chrismcgee.sky.production.ItemDetail;
import info.chrismcgee.sky.production.Job;
import java.util.List;
import org.jdesktop.swingx.treetable.AbstractTreeTableModel;
public class NoRootTreeTableModel extends AbstractTreeTableModel {
private final static String[] COLUMN_NAMES = {"Name/Product", "Job # / Detail", "T",
"Colors", "Quantity", "Total"};
private List<Job> jobList;
public NoRootTreeTableModel(List<Job> jobList)
{
super(new Object());
this.jobList = jobList;
}
@Override
public int getColumnCount() {
return COLUMN_NAMES.length;
}
@Override
public String getColumnName(int column)
{
return COLUMN_NAMES[column];
}
@Override
public boolean isCellEditable(Object node, int column)
{
return false;
}
@Override
public boolean isLeaf(Object node)
{
return node instanceof ItemDetail;
}
@Override
public int getChildCount(Object parent) {
if (parent instanceof Job) {
Job job = (Job) parent;
return job.getItemList().size();
}
return jobList.size();
}
@Override
public Object getChild(Object parent, int index) {
if (parent instanceof Job) {
Job job = (Job) parent;
return job.getItemList().get(index);
}
return jobList.get(index);
}
@Override
public int getIndexOfChild(Object parent, Object child) {
Job job = (Job) parent;
ItemDetail item = (ItemDetail) child;
return job.getItemList().indexOf(item);
}
@Override
public Object getValueAt(Object node, int column) {
if (node instanceof Job) {
Job job = (Job) node;
switch (column) {
case 0:
return job.getCbJob();
case 1:
return job.getIdNumber();
}
} else if (node instanceof ItemDetail) {
ItemDetail item = (ItemDetail) node;
switch (column) {
case 0:
return item.getProductId();
case 1:
return item.getDetail();
case 2:
return item.getPrintType();
case 3:
return item.getNumColors();
case 4:
return item.getNumQuantity();
case 5:
return item.getNumColors() * item.getNumQuantity();
}
}
return null;
}
}
I know that is a lot of code, but I couldn't think of a quick way to cut it down and still have it work the way I need it to. And actually, it's cut down quite a bit already. (I left out a bunch of stuff that is normally also in that JFrame.)
When the code is run, I don't get a checkbox for the branches; instead, I get what appears to be a String representation of the checkbox code:
Huh? How did this happen and, more importantly, how can I get the checkbox to show up instead?
回答1:
You should never add components to a model, instead you should be providing a TreeCellRenderer to render the value of the node. The Node is probably using the toString value of the user object assigned to it...
Take a look at How to Use Trees and Customizing a Tree's Display for more details
Example Ripped Straight from Customizing a Tree's Display
I'll leave it up to you create the editor and determine how the check box should get selected
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.util.List;
import java.util.Vector;
import javax.swing.ButtonGroup;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.event.TreeModelEvent;
import javax.swing.event.TreeModelListener;
import javax.swing.tree.TreeCellRenderer;
import javax.swing.tree.TreeModel;
import javax.swing.tree.TreePath;
import javax.swing.tree.TreeSelectionModel;
public class TreeExample {
public static void main(String[] args) {
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
//Create and set up the window.
JFrame frame = new JFrame("GenealogyExample");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Create and set up the content pane.
GenealogyExample newContentPane = new GenealogyExample();
newContentPane.setOpaque(true); //content panes must be opaque
frame.setContentPane(newContentPane);
//Display the window.
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
}
});
}
public static class GenealogyExample extends JPanel
implements ActionListener {
private JTree tree;
private static String SHOW_ANCESTOR_CMD = "showAncestor";
public GenealogyExample() {
super(new BorderLayout());
//Construct the panel with the toggle buttons.
JRadioButton showDescendant
= new JRadioButton("Show descendants", true);
final JRadioButton showAncestor
= new JRadioButton("Show ancestors");
ButtonGroup bGroup = new ButtonGroup();
bGroup.add(showDescendant);
bGroup.add(showAncestor);
showDescendant.addActionListener(this);
showAncestor.addActionListener(this);
showAncestor.setActionCommand(SHOW_ANCESTOR_CMD);
JPanel buttonPanel = new JPanel();
buttonPanel.add(showDescendant);
buttonPanel.add(showAncestor);
//Construct the tree.
tree = new JTree(new GenealogyModel(getGenealogyGraph()));
tree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
tree.setCellRenderer(new CheckBoxTreeCellRenderer());
JScrollPane scrollPane = new JScrollPane(tree);
scrollPane.setPreferredSize(new Dimension(200, 200));
//Add everything to this panel.
add(buttonPanel, BorderLayout.PAGE_START);
add(scrollPane, BorderLayout.CENTER);
}
/**
* Required by the ActionListener interface. Handle events on the
* showDescendant and showAncestore buttons.
*/
public void actionPerformed(ActionEvent ae) {
if (ae.getActionCommand() == SHOW_ANCESTOR_CMD) {
showAncestor(true);
} else {
showAncestor(false);
}
}
public void showAncestor(boolean b) {
Object newRoot = null;
TreePath path = tree.getSelectionModel().getSelectionPath();
if (path != null) {
newRoot = path.getLastPathComponent();
}
((GenealogyModel)tree.getModel()).showAncestor(b, newRoot);
}
/**
* Constructs the genealogy graph used by the model.
*/
public Person getGenealogyGraph() {
//the greatgrandparent generation
Person a1 = new Person("Jack (great-granddaddy)");
Person a2 = new Person("Jean (great-granny)");
Person a3 = new Person("Albert (great-granddaddy)");
Person a4 = new Person("Rae (great-granny)");
Person a5 = new Person("Paul (great-granddaddy)");
Person a6 = new Person("Josie (great-granny)");
//the grandparent generation
Person b1 = new Person("Peter (grandpa)");
Person b2 = new Person("Zoe (grandma)");
Person b3 = new Person("Simon (grandpa)");
Person b4 = new Person("James (grandpa)");
Person b5 = new Person("Bertha (grandma)");
Person b6 = new Person("Veronica (grandma)");
Person b7 = new Person("Anne (grandma)");
Person b8 = new Person("Renee (grandma)");
Person b9 = new Person("Joseph (grandpa)");
//the parent generation
Person c1 = new Person("Isabelle (mom)");
Person c2 = new Person("Frank (dad)");
Person c3 = new Person("Louis (dad)");
Person c4 = new Person("Laurence (dad)");
Person c5 = new Person("Valerie (mom)");
Person c6 = new Person("Marie (mom)");
Person c7 = new Person("Helen (mom)");
Person c8 = new Person("Mark (dad)");
Person c9 = new Person("Oliver (dad)");
//the youngest generation
Person d1 = new Person("Clement (boy)");
Person d2 = new Person("Colin (boy)");
Person.linkFamily(a1, a2, new Person[]{b1, b2, b3, b4});
Person.linkFamily(a3, a4, new Person[]{b5, b6, b7});
Person.linkFamily(a5, a6, new Person[]{b8, b9});
Person.linkFamily(b3, b6, new Person[]{c1, c2, c3});
Person.linkFamily(b4, b5, new Person[]{c4, c5, c6});
Person.linkFamily(b8, b7, new Person[]{c7, c8, c9});
Person.linkFamily(c4, c7, new Person[]{d1, d2});
return a1;
}
}
public static class CheckBoxTreeCellRenderer implements TreeCellRenderer {
private JCheckBox cb = new JCheckBox();
@Override
public Component getTreeCellRendererComponent(JTree tree, Object value, boolean selected, boolean expanded, boolean leaf, int row, boolean hasFocus) {
cb.setText(value.toString());
cb.setOpaque(selected);
if (selected) {
cb.setBackground(UIManager.getColor("Tree.selectionBackground"));
cb.setForeground(UIManager.getColor("Tree.selectionForeground"));
} else {
cb.setBackground(tree.getBackground());
cb.setForeground(tree.getForeground());
}
return cb;
}
}
public static class GenealogyModel implements TreeModel {
private boolean showAncestors;
private Vector<TreeModelListener> treeModelListeners
= new Vector<TreeModelListener>();
private Person rootPerson;
public GenealogyModel(Person root) {
showAncestors = false;
rootPerson = root;
}
/**
* Used to toggle between show ancestors/show descendant and to change the
* root of the tree.
*/
public void showAncestor(boolean b, Object newRoot) {
showAncestors = b;
Person oldRoot = rootPerson;
if (newRoot != null) {
rootPerson = (Person) newRoot;
}
fireTreeStructureChanged(oldRoot);
}
//////////////// Fire events //////////////////////////////////////////////
/**
* The only event raised by this model is TreeStructureChanged with the root
* as path, i.e. the whole tree has changed.
*/
protected void fireTreeStructureChanged(Person oldRoot) {
int len = treeModelListeners.size();
TreeModelEvent e = new TreeModelEvent(this,
new Object[]{oldRoot});
for (TreeModelListener tml : treeModelListeners) {
tml.treeStructureChanged(e);
}
}
//////////////// TreeModel interface implementation ///////////////////////
/**
* Adds a listener for the TreeModelEvent posted after the tree changes.
*/
public void addTreeModelListener(TreeModelListener l) {
treeModelListeners.addElement(l);
}
/**
* Returns the child of parent at index index in the parent's child array.
*/
public Object getChild(Object parent, int index) {
Person p = (Person) parent;
if (showAncestors) {
if ((index > 0) && (p.getFather() != null)) {
return p.getMother();
}
return p.getFather();
}
return p.getChildAt(index);
}
/**
* Returns the number of children of parent.
*/
public int getChildCount(Object parent) {
Person p = (Person) parent;
if (showAncestors) {
int count = 0;
if (p.getFather() != null) {
count++;
}
if (p.getMother() != null) {
count++;
}
return count;
}
return p.getChildCount();
}
/**
* Returns the index of child in parent.
*/
public int getIndexOfChild(Object parent, Object child) {
Person p = (Person) parent;
if (showAncestors) {
int count = 0;
Person father = p.getFather();
if (father != null) {
count++;
if (father == child) {
return 0;
}
}
if (p.getMother() != child) {
return count;
}
return -1;
}
return p.getIndexOfChild((Person) child);
}
/**
* Returns the root of the tree.
*/
public Object getRoot() {
return rootPerson;
}
/**
* Returns true if node is a leaf.
*/
public boolean isLeaf(Object node) {
Person p = (Person) node;
if (showAncestors) {
return ((p.getFather() == null)
&& (p.getMother() == null));
}
return p.getChildCount() == 0;
}
/**
* Removes a listener previously added with addTreeModelListener().
*/
public void removeTreeModelListener(TreeModelListener l) {
treeModelListeners.removeElement(l);
}
/**
* Messaged when the user has altered the value for the item identified by
* path to newValue. Not used by this model.
*/
public void valueForPathChanged(TreePath path, Object newValue) {
System.out.println("*** valueForPathChanged : "
+ path + " --> " + newValue);
}
}
public static class Person {
Person father;
Person mother;
List<Person> children;
private String name;
public Person(String name) {
this.name = name;
mother = father = null;
children = new ArrayList<Person>();
}
/**
* Link together all members of a family.
*
* @param pa the father
* @param ma the mother
* @param kids the children
*/
public static void linkFamily(Person pa,
Person ma,
Person[] kids) {
for (Person kid : kids) {
pa.children.add(kid);
ma.children.add(kid);
kid.father = pa;
kid.mother = ma;
}
}
/// getter methods ///////////////////////////////////
public String toString() {
return name;
}
public String getName() {
return name;
}
public Person getFather() {
return father;
}
public Person getMother() {
return mother;
}
public int getChildCount() {
return children.size();
}
public Person getChildAt(int i) {
return (Person) children.get(i);
}
public int getIndexOfChild(Person kid) {
return children.indexOf(kid);
}
}
}
回答2:
Sturm gives most of the solution.
The missing piece of the puzzle is that you can get the JTree from the JXTreeTable like this:
JTree tree = (JTree) treeTable.getCellRenderer(0, treeTable.getHierarchicalColumn())
It's a bit of a hack, but I don't know if they have any better API to get at it.
回答3:
With a few minutes of googling, I found this CheckBox node tree sample and this blog post about JXTreeTable with CheckBoxes, as well as this very simple solution.
Is this not what you are looking for?
来源：https://stackoverflow.com/questions/21924846/checkbox-within-a-jxtreetable