SWT Spinner Test
/*
* (c) Copyright IBM Corp. 2000, 2001. All Rights Reserved.
*/
import java.util.Hashtable;
import org.eclipse.swt.SWT;
import org.eclipse.swt.SWTError;
import org.eclipse.swt.events.ControlAdapter;
import org.eclipse.swt.events.ControlEvent;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.events.FocusAdapter;
import org.eclipse.swt.events.FocusEvent;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.TypedListener;
public class SpinnerTest {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
shell.setLayout(new RowLayout());
final Spinner spinner = new Spinner(shell, 0);
spinner.setMaximum(999);
System.out.println("max set to " + spinner.getMaximum());
spinner.setSelection(500);
System.out.println("selection set to " + spinner.getSelection());
spinner.setMinimum(100);
System.out.println("min set to " + spinner.getMinimum());
Font font = new Font(display, "Courier", 20, SWT.NORMAL);
spinner.setFont(font);
spinner.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
System.out.println(spinner.getSelection());
}
});
shell.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
font.dispose();
}
}
class Spinner extends Composite {
int handleSpinner;
static Hashtable table = new Hashtable();
static {
System.loadLibrary("spinner");
}
public Spinner(Composite parent, int style) {
super(parent, style);
int handleParent = handle;
handleSpinner = createControl(handleParent);
if (handleSpinner == 0)
SWT.error(SWT.ERROR_NO_HANDLES);
table.put(new Integer(handleSpinner), this);
addDisposeListener(new DisposeListener() {
public void widgetDisposed(DisposeEvent e) {
Spinner.this.widgetDisposed(e);
}
});
addControlListener(new ControlAdapter() {
public void controlResized(ControlEvent e) {
Spinner.this.controlResized(e);
}
});
addFocusListener(new FocusAdapter() {
public void focusGained(FocusEvent e) {
Spinner.this.focusGained(e);
}
});
Font font = getFont();
setFont(handleSpinner, font.handle);
}
public void setFont(Font font) {
super.setFont(font);
int hFont = 0;
if (font != null)
hFont = font.handle;
setFont(handleSpinner, hFont);
}
public int getSelection() {
checkWidget();
return getPosition(handleSpinner);
}
public void setSelection(int selection) {
checkWidget();
setPosition(handleSpinner, selection);
}
public void setMaximum(int maximum) {
checkWidget();
setMaximum(handleSpinner, maximum);
}
public int getMaximum() {
checkWidget();
return getMaximum(handleSpinner);
}
public void setMinimum(int minimum) {
checkWidget();
setMinimum(handleSpinner, minimum);
}
public int getMinimum() {
checkWidget();
return getMinimum(handleSpinner);
}
public void widgetDisposed(DisposeEvent e) {
table.remove(new Integer(handleSpinner));
handleSpinner = 0;
}
public void controlResized(ControlEvent e) {
Rectangle rect = getClientArea();
resizeControl(handleSpinner, rect.x, rect.y, rect.width, rect.height);
}
public void focusGained(FocusEvent e) {
setFocus(handleSpinner);
}
public Point computeSize(int wHint, int hHint, boolean changed) {
checkWidget();
int[] result = new int[2];
computeSize(handleSpinner, result);
if (wHint != SWT.DEFAULT)
result[0] = wHint;
if (hHint != SWT.DEFAULT)
result[1] = hHint;
int border = getBorderWidth();
return new Point(result[0] + border * 2, result[1] + border * 2);
}
public void addSelectionListener(SelectionListener listener) {
if (listener == null)
throw new SWTError(SWT.ERROR_NULL_ARGUMENT);
addListener(SWT.Selection, new TypedListener(listener));
}
static void widgetSelected(int handle) {
Spinner spinner = (Spinner) table.get(new Integer(handle));
if (spinner == null)
return;
spinner.notifyListeners(SWT.Selection, new Event());
}
/** ********* JAVA NATIVES *********** */
static final native int createControl(int handle);
static final native void computeSize(int handle, int[] result);
static final native void resizeControl(int handle, int x, int y, int width,
int height);
static final native void setPosition(int handle, int position);
static final native int getPosition(int handle);
static final native void setMaximum(int handle, int max);
static final native int getMaximum(int handle);
static final native void setMinimum(int handle, int min);
static final native int getMinimum(int handle);
static final native void setFont(int handle, int hFont);
static final native void setFocus(int handle);
}
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