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The source code

/*
 *                 Sun Public License Notice
 * 
 * The contents of this file are subject to the Sun Public License
 * Version 1.0 (the "License"). You may not use this file except in
 * compliance with the License. A copy of the License is available at
 * http://www.sun.com/
 * 
 * The Original Code is NetBeans. The Initial Developer of the Original
 * Code is Sun Microsystems, Inc. Portions Copyright 1997-2003 Sun
 * Microsystems, Inc. All Rights Reserved.
 */

package org.netbeans.modules.editor.options;

import java.awt.Insets;
import java.text.MessageFormat;
import java.util.StringTokenizer;

import org.openide.NotifyDescriptor;
import org.openide.util.NbBundle;

/**
 * A property editor for Insets class allowing to specify per cent value
 * represented as negative number.
 *
 * @author   Petr Nejedly    
 * @author   Petr Hamernik
 */
public class ScrollInsetsEditor extends java.beans.PropertyEditorSupport {

    public boolean supportsCustomEditor () {
        return true;
    }

    public java.awt.Component getCustomEditor () {
        return new ScrollInsetsCustomEditor( this );
    }

    //  public Object getValue() {
    //    if( editorPanel != null ) {
    //      try {
    //        return editorPanel.getValue();
    //      } catch( NumberFormatException e ) {
    //        return super.getValue();
    //        // PENDING
    //      }
    //    } else {
    //      return super.getValue();
    //    }
    //  }

    /**
     * @return The property value as a human editable string.
     * 

Returns null if the value can't be expressed as an editable string. *

If a non-null value is returned, then the PropertyEditor should * be prepared to parse that string back in setAsText(). */ public String getAsText() { Insets val = (Insets) getValue(); if (val == null) return null; else { return "[" + int2percent( val.top ) + ',' + int2percent( val.left ) + ',' + // NOI18N int2percent( val.bottom ) + ',' + int2percent( val.right ) + ']'; } } /** Set the property value by parsing a given String. May raise * java.lang.IllegalArgumentException if either the String is * badly formatted or if this kind of property can't be expressed * as text. * @param text The string to be parsed. */ public void setAsText(String text) throws IllegalArgumentException { int[] newVal = new int[4]; int nextNumber = 0; StringTokenizer tuk = new StringTokenizer( text, "[] ,;", false ); // NOI18N while( tuk.hasMoreTokens() ) { String token = tuk.nextToken(); if( nextNumber >= 4 ) badFormat(); try { newVal[nextNumber++] = percent2int( token ); } catch( NumberFormatException e ) { badFormat(); } } // if less numbers are entered, copy the last entered number into the rest if( nextNumber != 4 ) { if( nextNumber > 0 ) { int copyValue = newVal[ nextNumber - 1 ]; for( int i = nextNumber; i < 4; i++ ) newVal[i] = copyValue; } } setValue( new Insets( newVal[0], newVal[1], newVal[2], newVal[3] ) ); } private String getBundleString(String s) { return NbBundle.getMessage(ScrollInsetsEditor.class, s); } /** Always throws the new exception */ private void badFormat() throws IllegalArgumentException { throw new IllegalArgumentException( getBundleString("SIE_EXC_BadFormatValue" ) ); } private String int2percent( int i ) { if( i < 0 ) return( "" + (-i) + '%' ); else return( "" + i ); } private int percent2int( String val ) throws NumberFormatException { val = val.trim(); if( val.endsWith( "%" ) ) { // NOI18N return -Integer.parseInt( val.substring( 0, val.length() - 1 ) ); } else { return Integer.parseInt( val ); } } }

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