javaeclipse-pluginswtjfacemaster-detail
How to implement a simple master-detail in a JFace WizardPage
I want to implement a simple master-detail scenario in Jface WizardPage: The WizardPage will have one table with some names, upon selecting a row in the table the bottom part of the WizardPage containing texts/labels gets updated with the details corresponding to the selection in the table.
I searched internet and found only examples that run as SWT application: http://dev.eclipse.org/viewcvs/viewvc.cgi/org.eclipse.jface.examples.databinding/src/org/eclipse/jface/examples/databinding/snippets/Snippet010MasterDetail.java?view=markup
1 /*******************************************************************************
2 * Copyright (c) 2007, 2009 Brad Reynolds and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html
7 *
8 * Contributors:
9 * Brad Reynolds - initial API and implementation
10 * Matthew Hall - bug 260329
11 ******************************************************************************/
12
13 package org.eclipse.jface.examples.databinding.snippets;
14
15 import java.beans.PropertyChangeListener;
16 import java.beans.PropertyChangeSupport;
17
18 import org.eclipse.core.databinding.DataBindingContext;
19 import org.eclipse.core.databinding.UpdateValueStrategy;
20 import org.eclipse.core.databinding.beans.BeansObservables;
21 import org.eclipse.core.databinding.observable.Realm;
22 import org.eclipse.core.databinding.observable.value.IObservableValue;
23 import org.eclipse.jface.databinding.swt.SWTObservables;
24 import org.eclipse.jface.databinding.viewers.ViewersObservables;
25 import org.eclipse.jface.viewers.ArrayContentProvider;
26 import org.eclipse.jface.viewers.ListViewer;
27 import org.eclipse.swt.SWT;
28 import org.eclipse.swt.layout.GridLayout;
29 import org.eclipse.swt.widgets.Display;
30 import org.eclipse.swt.widgets.Shell;
31 import org.eclipse.swt.widgets.Text;
32
33 /**
34 * Snippet that displays a simple master detail use case. A list of persons is
35 * displayed in a list and upon selection the name of the selected person will
36 * be displayed in a Text widget.
37 */
38 public class Snippet010MasterDetail {
39 public static void main(String[] args) {
40 final Display display = new Display();
41 Realm.runWithDefault(SWTObservables.getRealm(display), new Runnable() {
42 public void run() {
43 Shell shell = new Shell(display);
44 shell.setLayout(new GridLayout());
45
46 Person[] persons = new Person[] { new Person("Me"),
47 new Person("Myself"), new Person("I") };
48
49 ListViewer viewer = new ListViewer(shell);
50 viewer.setContentProvider(new ArrayContentProvider());
51 viewer.setInput(persons);
52
53 Text name = new Text(shell, SWT.BORDER | SWT.READ_ONLY);
54
55 // 1. Observe changes in selection.
56 IObservableValue selection = ViewersObservables
57 .observeSingleSelection(viewer);
58
59 // 2. Observe the name property of the current selection.
60 IObservableValue detailObservable = BeansObservables
61 .observeDetailValue(selection, "name", String.class);
62
63 // 3. Bind the Text widget to the name detail (selection's
64 // name).
65 new DataBindingContext().bindValue(SWTObservables.observeText(
66 name, SWT.None), detailObservable,
67 new UpdateValueStrategy(false,
68 UpdateValueStrategy.POLICY_NEVER), null);
69
70 shell.open();
71 while (!shell.isDisposed()) {
72 if (!display.readAndDispatch())
73 display.sleep();
74 }
75 }
76 });
77 display.dispose();
78 }
79
80 public static class Person {
81 private String name;
82 private PropertyChangeSupport changeSupport = new PropertyChangeSupport(this);
83
84 Person(String name) {
85 this.name = name;
86 }
87
88 public void addPropertyChangeListener(PropertyChangeListener listener) {
89 changeSupport.addPropertyChangeListener(listener);
90 }
91
92 public void removePropertyChangeListener(PropertyChangeListener listener) {
93 changeSupport.removePropertyChangeListener(listener);
94 }
95
96 /**
97 * @return Returns the name.
98 */
99 public String getName() {
100 return name;
101 }
102
103 public String toString() {
104 return name;
105 }
106 }
107 }
How to integrate this in a JFace Wizard? And this wizard should run as a Eclipse plugin
Solution
Here is a working example:
public static void main(String[] args) {
final Display display = new Display();
final Shell shell = new Shell(display);
WizardDialog wizardDialog = new WizardDialog(shell, new MyWizard());
wizardDialog.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
display.dispose();
}
private static class MyWizard extends Wizard
{
protected MyWizardPage one;
public MyWizard()
{
super();
}
@Override
public void addPages() {
one = new MyWizardPage("Page One");
addPage(one);
}
@Override
public boolean performFinish() {
return false;
}
}
private static class MyWizardPage extends WizardPage
{
protected MyWizardPage(String pageName) {
super(pageName);
}
@Override
public void createControl(Composite comp)
{
Composite container = new Composite(comp, SWT.NULL);
GridLayout layout = new GridLayout(2, true);
container.setLayout(layout);
final TableViewer viewer = new TableViewer(container, SWT.READ_ONLY);
// First column is for the name
TableViewerColumn col = createTableViewerColumn("Name", 100, 0, viewer);
col.setLabelProvider(new ColumnLabelProvider() {
@Override
public String getText(Object element) {
if(element instanceof Person)
{
return ((Person)element).getName();
}
return "";
}
});
// First column is for the location
TableViewerColumn col2 = createTableViewerColumn("Location", 100, 1, viewer);
col2.setLabelProvider(new ColumnLabelProvider() {
@Override
public String getText(Object element) {
if(element instanceof Person)
{
return ((Person)element).getLocation();
}
return "";
}
});
final Table table = viewer.getTable();
table.setHeaderVisible(true);
table.setLinesVisible(true);
GridData data = new GridData(SWT.FILL, SWT.FILL, true, true);
data.horizontalSpan = 2;
table.setLayoutData(data);
/* Add listener to listen for selection change */
final Text name = new Text(container, SWT.BORDER);
name.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, true));
final Text location = new Text(container, SWT.BORDER);
location.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, true));
viewer.addSelectionChangedListener(new ISelectionChangedListener() {
@Override
public void selectionChanged(SelectionChangedEvent arg0) {
IStructuredSelection selection = (IStructuredSelection) viewer.getSelection();
Person person = (Person) selection.getFirstElement();
name.setText(person.getName());
location.setText(person.getLocation());
}
});
viewer.setContentProvider(ArrayContentProvider.getInstance());
final Person[] persons = new Person[] { new Person("Baz", "Loc"),
new Person("BazBaz", "LocLoc"), new Person("BazBazBaz", "LocLocLoc") };
viewer.setInput(persons);
setControl(container);
setPageComplete(false);
}
}
private static TableViewerColumn createTableViewerColumn(String title, int bound, final int colNumber, TableViewer viewer) {
final TableViewerColumn viewerColumn = new TableViewerColumn(viewer, SWT.NONE);
final TableColumn column = viewerColumn.getColumn();
column.setText(title);
column.setWidth(bound);
column.setResizable(true);
column.setMoveable(false);
return viewerColumn;
}
public static class Person {
private String name;
private String location;
public Person(String name, String location) {
this.name = name;
this.location = location;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getLocation() {
return location;
}
public void setLocation(String location) {
this.location = location;
}
public String toString()
{
return name + " " + location;
}
}
And here is a screenshot:
As you can see, the text fields are filled with the content of the table. I'm sure you are able to use this code snippet for your purpose.
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