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package org.eclipse.swt.widgets;
/*
* Copyright (c) 2000, 2002 IBM Corp. All rights reserved.
* This file is made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*/
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.graphics.*;
public /*final*/ class Button extends Control {
public Button (Composite parent, int style) {
super (parent, checkStyle (style));
}
public void addSelectionListener(SelectionListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener(listener);
addListener(SWT.Selection,typedListener);
addListener(SWT.DefaultSelection,typedListener);
}
static int checkStyle (int style) {
style = checkBits (style, SWT.PUSH, SWT.ARROW, SWT.CHECK, SWT.RADIO, SWT.TOGGLE, 0);
if ((style & SWT.PUSH) != 0) {
return checkBits (style, SWT.CENTER, SWT.LEFT, SWT.RIGHT, 0, 0, 0);
}
if ((style & (SWT.CHECK | SWT.RADIO | SWT.TOGGLE)) != 0) {
return checkBits (style, SWT.LEFT, SWT.RIGHT, SWT.CENTER, 0, 0, 0);
}
if ((style & SWT.ARROW) != 0) {
return checkBits (style, SWT.UP, SWT.DOWN, SWT.LEFT, SWT.RIGHT, 0, 0);
}
return style;
}
public Point computeSize (int wHint, int hHint, boolean changed) {
checkWidget();
return new Point(0, 0);
}
void createHandle (int index) {
state |= HANDLE;
}
public int getAlignment () {
checkWidget();
return 0;
}
public Image getImage () {
checkWidget();
return null;
}
String getNameText () {
return getText ();
}
public boolean getSelection () {
checkWidget();
if ((style & (SWT.CHECK | SWT.RADIO | SWT.TOGGLE)) == 0) return false;
return false;
}
public String getText () {
checkWidget();
return "";
}
public void removeSelectionListener(SelectionListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook(SWT.Selection, listener);
eventTable.unhook(SWT.DefaultSelection,listener);
}
public void setAlignment (int alignment) {
checkWidget();
}
public void setImage (Image image) {
checkWidget();
}
public void setSelection (boolean selected) {
checkWidget();
}
public void setText (String string) {
checkWidget();
}
}
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