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/*****************************************************************************
* Copyright (c) 2010 CEA LIST.
*
* 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:
* Nicolas Guyomar (Mia-Software) - initial API and implementation
* Nicolas Guyomar (Mia-Software) - Bug 334546 - [celleditors] no border on Text field
*****************************************************************************/
package org.eclipse.emf.facet.widgets.celleditors.ecore.composite;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.emf.facet.widgets.celleditors.IValidator;
import org.eclipse.emf.facet.widgets.celleditors.ecore.Activator;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
public class FloatComposite extends StringComposite<Float> {
public FloatComposite(final Composite parent) {
this(parent, SWT.NONE);
}
public FloatComposite(final Composite parent, final int style) {
super(parent, style);
getTextField().addListener(SWT.Verify, new Listener() {
public void handleEvent(final Event event) {
String input = event.text;
for (int i = 0; i < input.length(); i++) {
char ch = input.charAt(i);
if (ch != '-') {
if (ch == '.') {
if (FloatComposite.this.getTextField().getText().indexOf('.') != -1) {
event.doit = false;
return;
}
} else {
if (!('0' <= ch && ch <= '9')) {
event.doit = false;
return;
}
}
} else {
if (FloatComposite.this.getTextField().getText().indexOf('-') != -1) {
event.doit = false;
return;
}
// If the '-' caracter is not type at the beginning of
// the String
if (event.start != 0) {
event.doit = false;
return;
}
}
}
}
});
}
@Override
public IValidator getValidator() {
return new IValidator() {
public IStatus validate(final Object object) {
if (getValue() != null) {
if (Float.MIN_VALUE <= getValue().floatValue()
&& getValue().floatValue() <= Float.MAX_VALUE) {
return Status.OK_STATUS;
}
}
return new Status(IStatus.ERROR, Activator.PLUGIN_ID, ""); //$NON-NLS-1$
}
};
}
@Override
public IConverter<Float> initConverter() {
return new IConverter<Float>() {
public Float toObject(final String string) {
if (string != null && string.length() > 0) {
try {
return new Float(string);
} catch (Exception e) {
return null;
}
}
return null;
}
public String toString(final Float object) {
return object.toString();
}
};
}
@Override
public IStatus validate(final String string) {
try {
if (string.length() > 0) {
Float.parseFloat(string);
}
} catch (Exception e) {
return new Status(IStatus.ERROR, Activator.PLUGIN_ID, ""); //$NON-NLS-1$
}
return new Status(IStatus.OK, Activator.PLUGIN_ID, ""); //$NON-NLS-1$
}
}
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