Source Code : Icon Selector

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Icon Selector

/******************************************************************************
 * Copyright (c) 1998, 2004 Jackwind Li Guojie
 * All right reserved. 
 * 
 * Created on Jan 5, 2004 2:15:34 PM by JACK
 * $Id$
 * 
 * visit: http://www.asprise.com/swt
 *****************************************************************************/
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.FileDialog;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

public class IconSelector {

  Display display = new Display();
  Shell shell = new Shell(display);

  Label labelIconFile;

  Text textIconFile;
  
  Button buttonIconBrowse;
  Button buttonSetIcon;
  
  Image shellIcon;
  
  Image buttonIcon;
  
  public IconSelector() {
    initializeUI();
    
    shell.pack();
    shell.open();
    //textUser.forceFocus();
    
    // Set up the event loop.
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        // If no more entries in event queue
        display.sleep();
      }
    }

    display.dispose();
  }
  
  private void initializeUI() {
    GridLayout gridLayout = new GridLayout(3, false);
    shell.setLayout(gridLayout);

    // Adds components to the first row.
    labelIconFile = new Label(shell, SWT.NULL);
    
    textIconFile = new Text(shell, SWT.SINGLE | SWT.BORDER);
    
    GridData gridData = new GridData(GridData.FILL_HORIZONTAL);
    gridData.grabExcessHorizontalSpace = true;
    textIconFile.setLayoutData(gridData);

    
    buttonIconBrowse = new Button(shell, SWT.PUSH);

    // last row.
    gridData = new GridData();
    gridData.horizontalSpan = 3;
    gridData.horizontalAlignment = GridData.CENTER;
    buttonSetIcon = new Button(shell, SWT.PUSH);
    buttonSetIcon.setLayoutData(gridData);

    shell.setText("Icon Selector");

    labelIconFile.setText("Select an icon:");

    buttonIconBrowse.setText("Browse");
    buttonSetIcon.setText("Set Icon");

    // Register listeners.
    buttonIconBrowse.addSelectionListener(new SelectionAdapter() {
      public void widgetSelected(SelectionEvent e) {
        FileDialog dialog = new FileDialog(shell, SWT.OPEN);
        String file = dialog.open();
        if (file != null) {
          textIconFile.setText(file);
        }
      }
    });

    buttonSetIcon.addSelectionListener(new SelectionAdapter() {
      public void widgetSelected(SelectionEvent e) {
        if(shellIcon != null) 
          shellIcon.dispose();
        
        try {
          shellIcon = new Image(display, textIconFile.getText());
          shell.setImage(shellIcon);
        }catch(Exception ex) {
          ex.printStackTrace();
        }
      }
    });  
  
  }
  
  public static void main(String[] args) {
    IconSelector iconSelector = new IconSelector();
  }
}
           
       

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