| /******************************************************************************* |
| * Copyright (c) 2000, 2006 IBM Corporation and others. |
| * 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.ui.refactoring.nls; |
| |
| import org.eclipse.core.runtime.Assert; |
| |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Control; |
| |
| import org.eclipse.jface.viewers.CellEditor; |
| |
| |
| public class MultiStateCellEditor extends CellEditor { |
| |
| private int fValue; |
| private final int fStateCount; |
| |
| /** |
| * @param stateCount must be > 1 |
| * @param initialValue initialValue |
| */ |
| public MultiStateCellEditor(Composite parent, int stateCount, int initialValue) { |
| super(parent); |
| Assert.isTrue(stateCount > 1, "incorrect state count"); //$NON-NLS-1$ |
| fStateCount= stateCount; |
| |
| Assert.isTrue(initialValue >= 0 && initialValue < stateCount, "incorrect initial value"); //$NON-NLS-1$ |
| fValue= initialValue; |
| |
| setValueValid(true); |
| } |
| |
| /* |
| * @see org.eclipse.jface.viewers.CellEditor#activate() |
| */ |
| public void activate() { |
| fValue= getNextValue(fStateCount, fValue); |
| fireApplyEditorValue(); |
| } |
| |
| public static int getNextValue(int stateCount, int currentValue){ |
| Assert.isTrue(stateCount > 1, "incorrect state count"); //$NON-NLS-1$ |
| Assert.isTrue(currentValue >= 0 && currentValue < stateCount, "incorrect initial value"); //$NON-NLS-1$ |
| return (currentValue + 1) % stateCount; |
| } |
| |
| /* |
| * @see org.eclipse.jface.viewers.CellEditor#createControl(org.eclipse.swt.widgets.Composite) |
| */ |
| protected Control createControl(Composite parent) { |
| return null; |
| } |
| |
| /* |
| * @see org.eclipse.jface.viewers.CellEditor#doGetValue() |
| * @return the Integer value |
| */ |
| protected Object doGetValue() { |
| return new Integer(fValue); |
| } |
| |
| /* |
| * @see org.eclipse.jface.viewers.CellEditor#doSetFocus() |
| */ |
| protected void doSetFocus() { |
| // Ignore |
| } |
| |
| /* |
| * @see org.eclipse.jface.viewers.CellEditor#doSetValue(java.lang.Object) |
| * @param value an Integer value |
| * must be >=0 and < stateCount (value passed in the constructor) |
| */ |
| protected void doSetValue(Object value) { |
| Assert.isTrue(value instanceof Integer, "value must be Integer"); //$NON-NLS-1$ |
| fValue = ((Integer) value).intValue(); |
| Assert.isTrue(fValue >= 0 && fValue < fStateCount, "invalid value"); //$NON-NLS-1$ |
| } |
| } |