如何在JFace WizardPage中實現一個簡單的主細節

Question

我想在Jface WizardPage中實現一個簡單的主細節場景： WizardPage將有一個包含一些名字的表格，在表格底部選擇一行包含文本/標籤的WizardPage會根據表中所選內容的細節進行更新。

我搜索網絡，發現只有爲SWT應用程序運行的例子： 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 } 

如何在JFace的嚮導這個集成？ 而這個嚮導應該運行作爲一個Eclipse插件

Answer 1

這裏是一個工作示例：

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; 
    } 
} 

這裏是截圖：

正如你所看到的，文本字段充滿了表格的內容。我相信你可以使用這段代碼來達到你的目的。