| /******************************************************************************* |
| * Copyright (c) 2011 Laurent CARON |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Laurent CARON (laurent.caron at gmail dot com) - Initial implementation and API |
| *******************************************************************************/ |
| package org.mihalis.opal.preferenceWindow.widgets; |
| |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.layout.GridData; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Control; |
| import org.eclipse.swt.widgets.Event; |
| import org.eclipse.swt.widgets.Listener; |
| import org.eclipse.swt.widgets.Spinner; |
| import org.mihalis.opal.preferenceWindow.PreferenceWindow; |
| |
| /** |
| * Instances of this class are spinners. |
| */ |
| public class PWSpinner extends PWWidget { |
| |
| /** The max. */ |
| private final int max; |
| |
| /** The min. */ |
| private final int min; |
| |
| /** |
| * Constructor. |
| * |
| * @param label associated label |
| * @param propertyKey associated key |
| * @param min minimum value |
| * @param max maximum value |
| */ |
| public PWSpinner(final String label, final String propertyKey, final int min, final int max) { |
| super(label, propertyKey, label == null ? 1 : 2, false); |
| this.min = min; |
| this.max = max; |
| } |
| |
| /** |
| * Builds the. |
| * |
| * @param parent the parent |
| * @return the control |
| * @see org.mihalis.opal.preferenceWindow.widgets.PWWidget#build(org.eclipse.swt.widgets.Composite) |
| */ |
| @Override |
| public Control build(final Composite parent) { |
| buildLabel(parent, GridData.CENTER); |
| final Spinner spinner = new Spinner(parent, SWT.HORIZONTAL | SWT.BORDER); |
| addControl(spinner); |
| spinner.setMinimum(this.min); |
| spinner.setMaximum(this.max); |
| final Integer originalValue = (Integer) PreferenceWindow.getInstance().getValueFor(getPropertyKey()); |
| spinner.setSelection(originalValue.intValue()); |
| |
| spinner.addListener(SWT.Modify, new Listener() { |
| @Override |
| public void handleEvent(final Event event) { |
| PreferenceWindow.getInstance().setValue(getPropertyKey(), Integer.valueOf(spinner.getSelection())); |
| } |
| }); |
| |
| return spinner; |
| } |
| |
| /** |
| * Check. |
| * |
| * @see org.mihalis.opal.preferenceWindow.widgets.PWWidget#check() |
| */ |
| @Override |
| public void check() { |
| final Object value = PreferenceWindow.getInstance().getValueFor(getPropertyKey()); |
| if (value == null) { |
| PreferenceWindow.getInstance().setValue(getPropertyKey(), Integer.valueOf(this.min)); |
| } else { |
| if (!(value instanceof Integer)) { |
| throw new UnsupportedOperationException("The property '" + getPropertyKey() + "' has to be an Integer because it is associated to a spinner"); |
| } |
| |
| final int valueAsInt = ((Integer) value).intValue(); |
| if (valueAsInt < this.min || valueAsInt > this.max) { |
| throw new UnsupportedOperationException("The property '" + getPropertyKey() + "' is out of range (value is " + valueAsInt + ", range is " + this.min + "-" + this.max + ")"); |
| } |
| } |
| } |
| |
| } |