/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.directory.studio.valueeditors.integer;
import java.math.BigDecimal;
import org.apache.directory.studio.valueeditors.ValueEditorsActivator;
import org.apache.directory.studio.valueeditors.ValueEditorsConstants;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.KeyAdapter;
import org.eclipse.swt.events.KeyEvent;
import org.eclipse.swt.events.KeyListener;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.VerifyEvent;
import org.eclipse.swt.events.VerifyListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
/**
* This class provides a dialog to enter or choose an integer.
*
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
*/
public class IntegerDialog extends Dialog
{
/** The initial value */
private BigDecimal initialValue;
/** The value */
private BigDecimal value;
/** The text */
private Text text;
/**
* Creates a new instance of IntegerDialog.
*
* @param parentShell the parent shell
* @param initialValue the initial value
*/
public IntegerDialog( Shell parentShell, BigDecimal initialValue )
{
super( parentShell );
super.setShellStyle( super.getShellStyle() | SWT.RESIZE );
this.initialValue = initialValue;
this.value = new BigDecimal( initialValue.toString() );
}
/**
* {@inheritDoc}
*/
protected void configureShell( Shell shell )
{
super.configureShell( shell );
shell.setText( Messages.getString( "IntegerDialog.IntegerEditor" ) ); //$NON-NLS-1$
shell.setImage( ValueEditorsActivator.getDefault().getImage( ValueEditorsConstants.IMG_INTEGEREDITOR ) );
}
/**
* {@inheritDoc}
*/
protected void createButtonsForButtonBar( Composite parent )
{
createButton( parent, IDialogConstants.OK_ID, IDialogConstants.OK_LABEL, true );
createButton( parent, IDialogConstants.CANCEL_ID, IDialogConstants.CANCEL_LABEL, false );
}
/**
* {@inheritDoc}
*/
protected void okPressed()
{
// returnValue = spinner.getSelection();
super.okPressed();
}
/**
* {@inheritDoc}
*/
protected Control createDialogArea( Composite parent )
{
// Composite
Composite composite = ( Composite ) super.createDialogArea( parent );
composite.setLayout( new GridLayout( 3, false ) );
GridData gd = new GridData( GridData.FILL_BOTH );
composite.setLayoutData( gd );
// - Button
Button minusButton = new Button( composite, SWT.PUSH );
minusButton.setText( "-" ); //$NON-NLS-1$
minusButton.addSelectionListener( new SelectionAdapter()
{
public void widgetSelected( SelectionEvent e )
{
addToValue( -1 );
text.selectAll();
}
} );
// Text
text = new Text( composite, SWT.BORDER );
text.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
text.addModifyListener( new ModifyListener()
{
public void modifyText( ModifyEvent e )
{
updateValueFromText();
}
} );
text.addVerifyListener( new VerifyListener()
{
public void verifyText( VerifyEvent e )
{
// Prevent the user from entering anything but an integer
if ( !e.text.matches( "(-)?([0-9])*" ) ) //$NON-NLS-1$
{
e.doit = false;
}
}
} );
text.addKeyListener( new KeyAdapter()
{
public void keyPressed( KeyEvent e )
{
if ( e.keyCode == SWT.ARROW_UP )
{
addToValue( 1 );
e.doit = false;
text.selectAll();
}
else if ( e.keyCode == SWT.ARROW_DOWN )
{
addToValue( -1 );
e.doit = false;
text.selectAll();
}
else if ( e.keyCode == SWT.PAGE_UP )
{
addToValue( 100 );
e.doit = false;
text.selectAll();
}
else if ( e.keyCode == SWT.PAGE_DOWN )
{
addToValue( -100 );
e.doit = false;
text.selectAll();
}
}
} );
// + Button
Button plusButton = new Button( composite, SWT.PUSH );
plusButton.setText( "+" ); //$NON-NLS-1$
plusButton.addSelectionListener( new SelectionAdapter()
{
public void widgetSelected( SelectionEvent e )
{
addToValue( 1 );
text.selectAll();
}
} );
updateTextValue();
applyDialogFont( composite );
return composite;
}
/**
* Updates the text value.
*/
private void updateTextValue()
{
text.setText( value.toString() );
}
/**
* Adds the given integer to the value.
*
* @param i the integer
*/
private void addToValue( int i )
{
value = value.add( new BigDecimal( i ) );
updateTextValue();
}
/**
* Updates the value from the text's value.
*/
private void updateValueFromText()
{
try
{
BigDecimal newValue = new BigDecimal( text.getText() );
value = newValue;
}
catch ( NumberFormatException e )
{
// Nothing to do
}
}
/**
* Gets the integer.
*
* @return the integer
*/
public BigDecimal getInteger()
{
return value;
}
/**
* Indicates if the dialog is dirty.
*
* @return
* <code>true</code> if the dialog is dirty,
* <code>false</code> if not.
*/
public boolean isDirty()
{
return !initialValue.equals( value );
}
}