Attachment 184720 Details for Bug 332027 – java source

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java source

AssistErrDemo.java (text/plain), 3.09 KB, created by pengcheng

on 2010-12-07 09:53:02 EST

(hide)

Description:

Filename:

MIME Type:

Creator: pengcheng

Created: 2010-12-07 09:53:02 EST

Size: 3.09 KB

patch

obsolete

>package swt.text;
>
>import org.eclipse.swt.SWT;
>import org.eclipse.swt.graphics.Rectangle;
>import org.eclipse.swt.layout.FillLayout;
>import org.eclipse.swt.layout.GridData;
>import org.eclipse.swt.layout.GridLayout;
>import org.eclipse.swt.widgets.Display;
>import org.eclipse.swt.widgets.Event;
>import org.eclipse.swt.widgets.Listener;
>import org.eclipse.swt.widgets.Shell;
>import org.eclipse.swt.widgets.Table;
>import org.eclipse.swt.widgets.TableItem;
>import org.eclipse.swt.widgets.Text;
>
>public class AssistErrDemo {
>	
>	private Text text;
>	private Provider provider;
>	private Shell popup;
>	private Table table;
>	
>	public AssistErrDemo(final Text text, Provider provider) {
>		if(provider == null)
>			throw new NullPointerException("provider is null");
>			
>		this.text = text;
>		this.provider = provider;
>		text.addListener(SWT.KeyDown, new Listener() {
>			public void handleEvent(Event event) {
>				switch(event.keyCode) {
>					case SWT.ESC :
>						hide();
>						break;
>					case SWT.CR :
>						if(isVisible() && table.getSelectionIndex() != -1) {
>							text.setText(table.getSelection()[0].getText());
>							hide();
>						}
>						break;
>					default :
>						show();
>								
>				
>				} // switch
>			}
>		});
>		text.getShell().addListener(SWT.Move, new Listener() {
>			public void handleEvent(Event event) {
>				hide();
>			}
>		});
>	}
>	
>	public void show() {
>		if(popup == null) {
>			init();
>		}
>		if( ! popup.isVisible() ) {
>			Rectangle textBounds = text.getDisplay().map(text.getShell(), null, text.getBounds());
>			popup.setBounds(textBounds.x, textBounds.y + textBounds.height, textBounds.width, 150);
>			popup.setVisible(true);
>		}
>	}
>	
>	public void hide() {
>		if(popup != null)
>			popup.setVisible(false);
>	}
>	
>	public boolean isVisible() {
>		return popup != null && popup.isVisible();
>	}
>	
>	private void init() {
>		popup = new Shell(text.getDisplay(), SWT.ON_TOP);
>		popup.setLayout(new FillLayout());
>		table = new Table(popup, SWT.SINGLE);
>		popup.addListener(SWT.Show, new Listener() {
>			private String last = null;
>			public void handleEvent(Event event) {
>				String s = text.getText();
>				if(! s.equals(last)) {
>					last = s;
>					table.removeAll();
>					String[] as = provider.assist(s, 10);
>					for(int i=0, len=(as == null ? 0 : as.length); i<len; i++) {
>						new TableItem(table, SWT.None).setText(as[i]);
>					}
>					table.select(0);
>				}
>			}
>		});
>	}
>	
>	//----------- Provider
>	
>	public static interface Provider {
>		
>		String[] assist(String str, int size);
>		
>	} // Provider
>	
>	
>	public static void main(String[] args) {
>		Display display = new Display();
>		Shell shell = new Shell(display);
>		shell.setLayout(new GridLayout());
>		Text text = new Text(shell, SWT.SINGLE | SWT.BORDER);
>		text.setLayoutData(new GridData(150, SWT.DEFAULT));
>		shell.pack();
>		shell.open();
>		
>		new AssistErrDemo(text, null);
>//		new AssistErrDemo(text, new Provider(< auto completion here causes duplication >));
>		
>		while (!shell.isDisposed()) {
>			if (!display.readAndDispatch()) display.sleep();
>		}
>		display.dispose();
>	}
>
>}

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Attachments on bug 332027: 184720 | 184721