/*
 *                 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.xml.tools.generator;

import java.text.MessageFormat;
import java.io.IOException;
import java.io.File;
import javax.swing.*;
import java.awt.*;

import org.openide.*;
import org.openide.loaders.DataObject;
import org.openide.filesystems.*;
import org.openide.util.*;

import org.netbeans.modules.xml.core.lib.GuiUtil;

/**
 * Extremely simple dialog with one input line. Invoke using
 * {@link #getFileObject} method.
 */
public class SelectFileDialog extends JPanel {

    /** Serial Version UID */
    private static final long serialVersionUID = 4699298946223454165L;

    private Util.NameCheck check;

    private JButton OK_OPTION = new JButton(Util.THIS.getString("BK0002"));

    //
    // init
    //

    /**
     *
     * @param folder parent folder that will host created file
     * @param name default file name
     * @param ext default file.extension
     */
    public SelectFileDialog (FileObject folder, String name, String ext) {

        this (folder, name, ext, Util.JAVA_CHECK);
    }

    public SelectFileDialog (FileObject folder, String name, String ext, Util.NameCheck check) {
        this.folder = folder;
        this.name = name;
        this.ext = ext;
        this.check = check;
        this.selectDD = new DialogDescriptor(
                this,
                Util.THIS.getString ("PROP_fileNameTitle") + " *." + ext, // NOI18N
                true,
                new Object[] {OK_OPTION, DialogDescriptor.CANCEL_OPTION},
                OK_OPTION,
                DialogDescriptor.BOTTOM_ALIGN,
                null,
                null
        );

        initComponents ();
        fileLabel.setDisplayedMnemonic(Util.THIS.getChar("PROP_fileName_mne")); // NOI18N
        ownInitComponents ();
        
        initAccessibility();
    }

    private void ownInitComponents () {
        fileField.setText (name);        
        updateDialogUI();
    }

    /** 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 FormEditor.
     */
    private void initComponents() {//GEN-BEGIN:initComponents
        java.awt.GridBagConstraints gridBagConstraints;

        fileLabel = new javax.swing.JLabel();
        fileField = new javax.swing.JTextField();
        fillPanel = new javax.swing.JPanel();

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

        fileLabel.setText(java.util.ResourceBundle.getBundle("org/netbeans/modules/xml/tools/generator/Bundle").getString("PROP_fileName"));
        fileLabel.setLabelFor(fileField);
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.anchor = java.awt.GridBagConstraints.WEST;
        gridBagConstraints.insets = new java.awt.Insets(12, 12, 0, 0);
        add(fileLabel, gridBagConstraints);

        fileField.setColumns(20);
        fileField.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                fileFieldActionPerformed(evt);
            }
        });

        fileField.addFocusListener(new java.awt.event.FocusAdapter() {
            public void focusGained(java.awt.event.FocusEvent evt) {
                fileFieldFocusGained(evt);
            }
        });

        fileField.addKeyListener(new java.awt.event.KeyAdapter() {
            public void keyReleased(java.awt.event.KeyEvent evt) {
                fileFieldKeyReleased(evt);
            }
        });

        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridwidth = java.awt.GridBagConstraints.REMAINDER;
        gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
        gridBagConstraints.weightx = 1.0;
        gridBagConstraints.insets = new java.awt.Insets(12, 12, 0, 11);
        add(fileField, gridBagConstraints);

        fillPanel.setPreferredSize(new java.awt.Dimension(0, 0));
        fillPanel.setMinimumSize(new java.awt.Dimension(0, 0));
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridwidth = java.awt.GridBagConstraints.REMAINDER;
        gridBagConstraints.gridheight = java.awt.GridBagConstraints.REMAINDER;
        gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
        gridBagConstraints.weightx = 1.0;
        gridBagConstraints.weighty = 1.0;
        add(fillPanel, gridBagConstraints);

    }//GEN-END:initComponents

    /**
     * Always select all context as we are in "new" mode
     */
    private void fileFieldFocusGained(java.awt.event.FocusEvent evt) {//GEN-FIRST:event_fileFieldFocusGained
        fileField.selectAll();
    }//GEN-LAST:event_fileFieldFocusGained

  private void fileFieldKeyReleased(java.awt.event.KeyEvent evt) {//GEN-FIRST:event_fileFieldKeyReleased
        updateDialogUI();
  }//GEN-LAST:event_fileFieldKeyReleased

    private void fileFieldActionPerformed (java.awt.event.ActionEvent evt) {//GEN-FIRST:event_fileFieldActionPerformed
        updateDialogUI();
    }//GEN-LAST:event_fileFieldActionPerformed

    // check for errors and signalize them
    private void updateDialogUI() {
       enableOkOption (checkAll());
    }

    private boolean checkAll() {
        String typedText = fileField.getText();
        // no relative paths allowed #24693
        if (typedText.indexOf(File.separatorChar) != -1) return false;
        return check.checkName(typedText);
    }

    private void enableOkOption(boolean enable) {
        OK_OPTION.setEnabled(enable);
    }

    /**
     * Get file object that have user selected
     * @throws IOException if cancelled or invalid data entered
     */
    public FileObject getFileObject () throws IOException {
        FileObject newFO = null;

        while ( newFO == null ) {
            DialogDisplayer.getDefault().createDialog (selectDD).show();
            if (selectDD.getValue() != OK_OPTION) {
                throw new UserCancelException();
            }
            final String newName = fileField.getText();

            newFO = folder.getFileObject (newName, ext);
        
            if ( ( newFO == null ) ||
                 ( newFO.isVirtual() == true ) ) {

                FileSystem fs = folder.getFileSystem();
                final FileObject tempFile = newFO;
                
                fs.runAtomicAction (new FileSystem.AtomicAction () {
                        public void run () throws IOException {

                            if ( ( tempFile != null ) &&
                                 tempFile.isVirtual() ) {
                                tempFile.delete();
                            }

                            try {
                                folder.createData (newName, ext);
                            } catch (IOException exc) {
                                NotifyDescriptor desc = new NotifyDescriptor.Message
                                    (Util.THIS.getString ("MSG_cannot_create_data", newName + "." + ext), NotifyDescriptor.WARNING_MESSAGE);
                                DialogDisplayer.getDefault().notify (desc);

                                if ( Util.THIS.isLoggable() ) /* then */ Util.THIS.debug (exc);
                            }
                        }
                    });
                
                newFO = folder.getFileObject (newName, ext);

            } else if (newFO != null) {
                DataObject data = DataObject.find(newFO);
                if (data.isModified() || data.isValid() == false) {
                    NotifyDescriptor message = new NotifyDescriptor.Message(Util.THIS.getString("BK0001"), NotifyDescriptor.WARNING_MESSAGE);
                    DialogDisplayer.getDefault().notify(message);
                    throw new UserCancelException();
                } else if (!!! GuiUtil.confirmAction (MessageFormat.format (Util.THIS.getString ("PROP_replaceMsg"),
                                                                new String [] { newName, ext })) ) {
                    throw new UserCancelException();
                }
            }
        } // while

        return newFO;
    }


    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JLabel fileLabel;
    private javax.swing.JTextField fileField;
    private javax.swing.JPanel fillPanel;
    // End of variables declaration//GEN-END:variables

    private DialogDescriptor selectDD;
    private FileObject folder;
    private String name;
    private String ext;
    
    
    /** Initialize accesibility
     */
    public void initAccessibility(){
        this.getAccessibleContext().setAccessibleDescription(Util.THIS.getString("ACSD_SelectFileDialog"));        
        fileField.getAccessibleContext().setAccessibleDescription(Util.THIS.getString("ACSD_fileField"));        
    }
    
}