/**
* Copyright 2010 JBoss Inc
*
* 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.drools.eclipse.flow.common.view.datatype.editor.impl;
/*
* Copyright 2005 JBoss Inc
*
* 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.
*/
import org.drools.eclipse.flow.common.view.datatype.editor.Editor;
import org.drools.process.core.datatype.DataType;
import org.drools.process.core.datatype.impl.type.FloatDataType;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Text;
/**
* Default float editor.
*
* @author <a href="mailto:kris_verlaenen@hotmail.com">Kris Verlaenen</a>
*/
public class FloatEditor extends Composite implements Editor {
private Text text;
public FloatEditor(Composite parent) {
super(parent, SWT.NONE);
setLayout(new FillLayout());
text = new Text(this, SWT.NONE);
}
public void setDataType(DataType dataType) {
if (!(dataType instanceof FloatDataType)) {
throw new IllegalArgumentException("Illegal data type " + dataType);
}
}
public Object getValue() throws IllegalArgumentException {
String valueString = text.getText();
if ("".equals(valueString)) {
return null;
}
try {
return new Float(valueString);
} catch (NumberFormatException e) {
throw new IllegalArgumentException("The value " + valueString
+ " is not a valid float.");
}
}
public void setValue(Object value) {
if (value == null) {
text.setText("");
} else if (value instanceof Float) {
text.setText(((Float) value).toString());
} else {
throw new IllegalArgumentException("Value must be a float: " + value);
}
}
public void reset() {
text.setText("");
}
public void setEnabled(boolean enabled) {
super.setEnabled(enabled);
text.setEnabled(enabled);
}
}