Control Editors : ControlEditor « SWT « Java Tutorial

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Java Tutorial » SWT » ControlEditor 
17. 77. 1. Control Editors

ControlEditor offers basic control-editing abilities. It has three derived classes: TableEditor, TreeEditor, and TableTreeEditor.

Control Editors
import java.util.HashMap;
import java.util.Map;

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.ControlEditor;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

public class ControlEditorSample {
  private static final Map COLORS = new HashMap();
  static {
    COLORS.put("red"new RGB(25500));
    COLORS.put("green"new RGB(02550));
    COLORS.put("blue"new RGB(00255));
    COLORS.put("yellow"new RGB(2552550));
    COLORS.put("black"new RGB(000));
    COLORS.put("white"new RGB(255255255));
  }

  static Display display = new Display();

  static Color color = new Color(display, 25500);

  public static void main(String[] args) {

    final Shell shell = new Shell(display);
    shell.setText("Control Editor");

    final Composite composite = new Composite(shell, SWT.NONE);
    composite.setBackground(color);
    composite.setBounds(00300100);

    ControlEditor editor = new ControlEditor(composite);
    final Text text = new Text(composite, SWT.BORDER);
    text.addModifyListener(new ModifyListener() {
      public void modifyText(ModifyEvent event) {
        RGB rgb = (RGBCOLORS.get(text.getText());
        if (rgb != null) {
          if (color != null)
            color.dispose();
          color = new Color(shell.getDisplay(), rgb);
          composite.setBackground(color);
        }
      }
    });

    // Place the editor in the top middle of the parent composite
    editor.horizontalAlignment = SWT.CENTER;
    editor.verticalAlignment = SWT.TOP;
    Point size = text.computeSize(SWT.DEFAULT, SWT.DEFAULT);
    editor.minimumWidth = size.x;
    editor.minimumHeight = size.y;
    editor.setEditor(text);

    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
    if (color != null)
      color.dispose();
    display.dispose();

  }
}
17. 77. ControlEditor
17. 77. 1. Control EditorsControl Editors
17. 77. 2. Control Editor With DialogControl Editor With Dialog
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