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/*
 * 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.netbeans.modules.image;


import javax.swing.JPanel;
import javax.swing.text.AttributeSet;
import javax.swing.text.BadLocationException;
import javax.swing.text.PlainDocument;

import org.openide.util.NbBundle;


/** This class define a panel for "Custom zoom" dialog.
 *
 * @author  Lukas Tadial
 */
public class CustomZoomPanel extends JPanel {

    /** Creates new form CustomZoomPane */
    public CustomZoomPanel() {
        initComponents();
        initAccessibility();
    }


    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // //GEN-BEGIN:initComponents
    private void initComponents() {
        java.awt.GridBagConstraints gridBagConstraints;

        enlargeLabel = new javax.swing.JLabel();
        enlargeText = new javax.swing.JTextField();
        decreasingLabel = new javax.swing.JLabel();
        decreaseText = new javax.swing.JTextField();

        setLayout(new java.awt.GridBagLayout());

        enlargeLabel.setLabelFor(enlargeText);
        org.openide.awt.Mnemonics.setLocalizedText(enlargeLabel, NbBundle.getBundle(CustomZoomPanel.class).getString("LBL_EnlargeFactor")); // NOI18N
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.anchor = java.awt.GridBagConstraints.WEST;
        gridBagConstraints.insets = new java.awt.Insets(12, 12, 0, 0);
        add(enlargeLabel, gridBagConstraints);

        enlargeText.setDocument(new WholeNumberDocument());
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
        gridBagConstraints.weightx = 1.0;
        gridBagConstraints.insets = new java.awt.Insets(12, 11, 0, 11);
        add(enlargeText, gridBagConstraints);

        decreasingLabel.setLabelFor(decreaseText);
        org.openide.awt.Mnemonics.setLocalizedText(decreasingLabel, NbBundle.getBundle(CustomZoomPanel.class).getString("LBL_DecreaseFactor")); // NOI18N
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 0;
        gridBagConstraints.gridy = 1;
        gridBagConstraints.anchor = java.awt.GridBagConstraints.WEST;
        gridBagConstraints.insets = new java.awt.Insets(5, 12, 11, 0);
        add(decreasingLabel, gridBagConstraints);

        decreaseText.setDocument(new WholeNumberDocument());
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 1;
        gridBagConstraints.gridy = 1;
        gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
        gridBagConstraints.weightx = 1.0;
        gridBagConstraints.insets = new java.awt.Insets(5, 11, 11, 11);
        add(decreaseText, gridBagConstraints);
    }// //GEN-END:initComponents
    
    private void initAccessibility(){
        getAccessibleContext().setAccessibleDescription(NbBundle.getBundle(CustomZoomPanel.class).getString("ACSD_CustomZoomPanel"));
        enlargeText.getAccessibleContext().setAccessibleDescription(NbBundle.getBundle(CustomZoomPanel.class).getString("ACS_EnlargeText"));
        decreaseText.getAccessibleContext().setAccessibleDescription(NbBundle.getBundle(CustomZoomPanel.class).getString("ACS_DecreaseText"));
        
    }
    
    public int getEnlargeFactor() {
        return Integer.parseInt(enlargeText.getText());
    }
    
    public void setEnlargeFactor(int enlargeFactor) {
        enlargeText.setText("" + enlargeFactor); // NOI18N
    }
    
    public int getDecreaseFactor() {
        return Integer.parseInt(decreaseText.getText());
    } 
    
    public void setDecreaseFactor(int decreaseFactor) {
        decreaseText.setText("" + decreaseFactor); // NOI18N
    }
    
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JTextField decreaseText;
    private javax.swing.JLabel decreasingLabel;
    private javax.swing.JLabel enlargeLabel;
    private javax.swing.JTextField enlargeText;
    // End of variables declaration//GEN-END:variables
    

    /** Documnet which accepts only digit chars. */
    private static class WholeNumberDocument extends PlainDocument {

        /** Overrides superclass method. */
        public void insertString(int offs, String str, AttributeSet a) 
        throws BadLocationException {
             char[] source = str.toCharArray();
             StringBuffer result = new StringBuffer();
             
             for(int i=0; i