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最新推荐文章于 2025-08-08 10:27:58 发布

原创最新推荐文章于 2025-08-08 10:27:58 发布 · 590 阅读

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package com.junin.viewer.answer;

public class User {

private String id;

private String name;

public User(String id, String name) {
this.id = id;
this.name = name;
}

public String getId() {
return id;
}

public void setId(String id) {
this.id = id;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

}

--------------------------------------------------------------

package com.junin.viewer.answer;

import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.util.Vector;

public class ListModel
{

public static final String ADD_ELEMENT = "addElement";

public static final String REMOVE_ELEMENT = "removeElement";

private PropertyChangeSupport delegate;

private Vector content;

public ListModel()
{
content = new Vector();
delegate = new PropertyChangeSupport(this);
}

public void addPropertyChangeListener(PropertyChangeListener listener)
{
delegate.addPropertyChangeListener(listener);
}

public void removePropertyChangeListener(PropertyChangeListener listener)
{
delegate.removePropertyChangeListener(listener);
}

public void add(Object element)
{
  if (content.add(element))
   firePropertyChange(new PropertyChangeEvent(this, ADD_ELEMENT, null,
     element));
}

public void remove(Object element)
{
  if (content.remove(element))
   firePropertyChange(new PropertyChangeEvent(this, REMOVE_ELEMENT,
     null, element));
}

public void firePropertyChange(PropertyChangeEvent evt)
{
delegate.firePropertyChange(evt);
}

public Object[] elements()
{
return content.toArray();
}
}

----------------------------------

package com.junin.viewer.answer;

import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;

import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.ListViewer;
import org.eclipse.jface.viewers.Viewer;

public class ListContentProvider implements IStructuredContentProvider,
PropertyChangeListener
{

private ListViewer viewer;

private ListModel model;

public Object[] getElements(Object inputElement)
{
return model.elements();
}

public void dispose()
{
}

public void inputChanged(Viewer viewer, Object oldInput, Object newInput)
{
this.viewer = (ListViewer) viewer;

if (oldInput instanceof ListModel)
((ListModel) oldInput).removePropertyChangeListener(this);

  if (newInput instanceof ListModel)
  {
   this.model = (ListModel) newInput;
   ((ListModel) newInput).addPropertyChangeListener(this);
  }

}

public void propertyChange(PropertyChangeEvent evt)
{
  if (ListModel.ADD_ELEMENT.equals(evt.getPropertyName()))
   viewer.add(evt.getNewValue());
  if (ListModel.REMOVE_ELEMENT.equals(evt.getPropertyName()))
   viewer.remove(evt.getNewValue());
}
}

--------------------------------------
package com.junin.viewer.answer;

import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.ILabelProviderListener;
import org.eclipse.swt.graphics.Image;

public class ListLabelProvider implements ILabelProvider
{

public Image getImage(Object element)
{
return null;
}

public String getText(Object element)
{
  if (element instanceof User)
   return ((User) element).getId() +" : "+ ((User) element).getName();
  return element.toString();
}

public boolean isLabelProperty(Object element, String property)
{
return false;
}

public void dispose()
{
}

public void addListener(ILabelProviderListener listener)
{
}

public void removeListener(ILabelProviderListener listener)
{
}
}
--------------------------------------------------------------------

package com.junin.viewer.answer;

import org.eclipse.jface.viewers.ListViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class UsingListViewer {

public static void main(String[] args) {
  Display display = Display.getDefault();
  Shell shell = new Shell(display);
  shell.setSize(400, 400);
  shell.setLayout(new FillLayout());

ListViewer viewer = new ListViewer(shell, SWT.BORDER);

viewer.setContentProvider(new ListContentProvider());
viewer.setLabelProvider(new ListLabelProvider());

  ListModel input = new ListModel();
  viewer.setInput(input);

  shell.open();
  shell.layout();

  input.add(new User("1","张三"));
  input.add(new User("2","李四"));
  input.add(new User("3","王五"));
  input.add(new User("4","胡宁"));

  while (!shell.isDisposed())
   if (!display.readAndDispatch())
    display.sleep();
}

}
---------------------------------------------------------------------------

org.eclipse.core.commands_3.6.2.v20130123-162658.jar
org.eclipse.equinox.common_3.6.100.v20120522-1841.jar
org.eclipse.jface_3.8.102.v20130123-162658.jar
org.eclipse.swt.win32.win32.x86_3.100.1.v4236b.jar