JFACE TreeViewer 예제

TreeViewer 메뉴

- 모든 TreeViewr 구조의 예제를 제작해보았다.

1. Ch8TreeComposite

package Ch8Tree;

import java.util.ArrayList;

import java.util.List;

import org.eclipse.jface.viewers.ITreeContentProvider;

import org.eclipse.jface.viewers.TreeViewer;

import org.eclipse.jface.viewers.Viewer;

import org.eclipse.swt.SWT;

import org.eclipse.swt.layout.FillLayout;

import org.eclipse.swt.widgets.Composite;

public class Ch8TreeComposite extends Composite {

public Ch8TreeComposite(Composite parent) {

super(parent, SWT.NULL);

populateControl();

}

protected void populateControl() {

FillLayout compositeLayout = new FillLayout();

setLayout(compositeLayout);

int[] selectionStyle = { SWT.SINGLE, SWT.MULTI };

int[] checkStyle = { SWT.NONE, SWT.CHECK };

for (int selection = 0; selection < selectionStyle.length; selection++) {

for (int check = 0; check < checkStyle.length; check++) {

int style = selectionStyle[selection] | checkStyle[check];

createTreeViewer(style);

}

}

}

private void createTreeViewer(int style) {

TreeViewer viewer = new TreeViewer(this, style);

viewer.setContentProvider(new ITreeContentProvider() {

public Object[] getChildren(Object parentElement) {

return ((TreeNode) parentElement).getChildren().toArray();

}

public Object getParent(Object element) {

return ((TreeNode) element).getParent();

}

public boolean hasChildren(Object element) {

return ((TreeNode) element).getChildren().size() > 0;

}

public Object[] getElements(Object inputElement) {

return ((TreeNode) inputElement).getChildren().toArray();

}

public void dispose() {

}

public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {

}

});

viewer.setInput(getRootNode());

}

private TreeNode getRootNode() {

TreeNode root = new TreeNode("root");

root.addChild(new TreeNode("Child1").addChild(new TreeNode("subchild 1")));

root.addChild(

new TreeNode("Child2").addChild(new TreeNode("subchild 2").addChild(new TreeNode("gradnchild 1"))));

return root;

}

}

class TreeNode{

 private String name;

 private List children = new ArrayList();

 private TreeNode parent;

 

 public TreeNode(String n){

 name = n;

 }

 

 protected Object getParent(){

 return parent;

 }

 

 public TreeNode addChild(TreeNode child)

 {

 children.add(child);

 child.parent = this;

 return this;

 }

 

 public List getChildren(){

 return children;

 }

 

 public String toString(){

 return name;

 }

}

2. Viewer

package Ch8Tree;

import org.eclipse.jface.window.ApplicationWindow;

import org.eclipse.swt.SWT;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Control;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.TabFolder;

import org.eclipse.swt.widgets.TabItem;

public class Viewer extends ApplicationWindow {

public Viewer()

{

super(null);

}

protected Control createContents(Composite parent){

TabFolder tf = new TabFolder(parent, SWT.BORDER);

TabItem Ch8Tree = new TabItem(tf, SWT.NONE);

Ch8Tree.setText("Chapter 8 Tree");

Ch8Tree.setControl(new Ch8TreeComposite(tf));

return parent;

}

public static void main(String args[]){

Viewer vi = new Viewer();

vi.setBlockOnOpen(true);

vi.open();

Display.getCurrent().dispose();

}

}