org.cropinformatics.ui.components.impl.PropertySetValueOperation.java Source code

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Here is the source code for org.cropinformatics.ui.components.impl.PropertySetValueOperation.java

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/*******************************************************************************
 * Copyright 2011 Guy Davenport
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *******************************************************************************/
package org.cropinformatics.ui.components.impl;

import java.lang.reflect.InvocationTargetException;

import org.apache.commons.beanutils.PropertyUtils;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.commands.operations.AbstractOperation;
import org.eclipse.core.commands.operations.IUndoContext;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;

public class PropertySetValueOperation extends AbstractOperation {
    private Object bean;
    private String property;
    private Object value;
    private Object oldValue;
    private boolean canUndo;

    public PropertySetValueOperation(String label, IUndoContext context, Object bean, String property,
            Object value) {
        super(label);
        addContext(context);

        this.bean = bean;
        this.property = property;
        this.value = value;
        canUndo = true;
    }

    @Override
    public IStatus execute(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {

        try {
            oldValue = PropertyUtils.getProperty(bean, property);
        } catch (Exception e) {
            canUndo = false;
        }

        try {
            PropertyUtils.setProperty(bean, property, value);

            return Status.OK_STATUS;
        } catch (IllegalAccessException e) {
            throw new ExecutionException(e.getLocalizedMessage(), e);
        } catch (InvocationTargetException e) {
            throw new ExecutionException(e.getLocalizedMessage(), e);
        } catch (NoSuchMethodException e) {
            throw new ExecutionException(e.getLocalizedMessage(), e);
        }
    }

    @Override
    public IStatus redo(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
        try {
            PropertyUtils.setProperty(bean, property, value);

            return Status.OK_STATUS;
        } catch (IllegalAccessException e) {
            throw new ExecutionException(e.getLocalizedMessage(), e);
        } catch (InvocationTargetException e) {
            throw new ExecutionException(e.getLocalizedMessage(), e);
        } catch (NoSuchMethodException e) {
            throw new ExecutionException(e.getLocalizedMessage(), e);
        }
    }

    @Override
    public IStatus undo(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
        try {
            PropertyUtils.setProperty(bean, property, oldValue);

            return Status.OK_STATUS;
        } catch (IllegalAccessException e) {
            throw new ExecutionException(e.getLocalizedMessage(), e);
        } catch (InvocationTargetException e) {
            throw new ExecutionException(e.getLocalizedMessage(), e);
        } catch (NoSuchMethodException e) {
            throw new ExecutionException(e.getLocalizedMessage(), e);
        }
    }

    @Override
    public boolean canUndo() {
        return canUndo;
    }

    public final Object getBean() {
        return bean;
    }

    public final String getProperty() {
        return property;
    }

    public final Object getValue() {
        return value;
    }

    public final Object getOldValue() {
        return oldValue;
    }
}