/*
 * Copyright (c) 2007 Pentaho Corporation.  All rights reserved. 
 * This software was developed by Pentaho Corporation and is provided under the terms 
 * of the GNU Lesser General Public License, Version 2.1. You may not use 
 * this file except in compliance with the license. If you need a copy of the license, 
 * please go to http://www.gnu.org/licenses/lgpl-2.1.txt. The Original Code is Pentaho 
 * Data Integration.  The Initial Developer is Samatar.
 *
 * Software distributed under the GNU Lesser Public License is distributed on an "AS IS" 
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or  implied. Please refer to 
 * the license for the specific language governing your rights and limitations.
*/

/**
 * @author Samatar
 * @since 18-July-2008
 */

package org.pentaho.di.ui.trans.steps.getsubfolders;

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.CTabFolder;
import org.eclipse.swt.custom.CTabItem;
import org.eclipse.swt.events.FocusListener;
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.ShellAdapter;
import org.eclipse.swt.events.ShellEvent;
import org.eclipse.swt.graphics.Cursor;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.DirectoryDialog;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.pentaho.di.core.Const;
import org.pentaho.di.core.Props;
import org.pentaho.di.i18n.BaseMessages;
import org.pentaho.di.trans.Trans;
import org.pentaho.di.trans.TransMeta;
import org.pentaho.di.trans.TransPreviewFactory;
import org.pentaho.di.trans.step.BaseStepMeta;
import org.pentaho.di.trans.step.StepDialogInterface;
import org.pentaho.di.trans.steps.getsubfolders.GetSubFoldersMeta;
import org.pentaho.di.ui.core.dialog.EnterNumberDialog;
import org.pentaho.di.ui.core.dialog.EnterTextDialog;
import org.pentaho.di.ui.core.dialog.PreviewRowsDialog;
import org.pentaho.di.ui.core.widget.ColumnInfo;
import org.pentaho.di.ui.core.widget.ComboVar;
import org.pentaho.di.ui.core.widget.TableView;
import org.pentaho.di.ui.core.widget.TextVar;
import org.pentaho.di.ui.trans.dialog.TransPreviewProgressDialog;
import org.pentaho.di.ui.trans.step.BaseStepDialog;

public class GetSubFoldersDialog extends BaseStepDialog implements StepDialogInterface
{
	private static Class<?> PKG = GetSubFoldersMeta.class; // for i18n purposes, needed by Translator2!!   $NON-NLS-1$

	private CTabFolder wTabFolder;

	private FormData fdTabFolder;

	private CTabItem wFolderTab, wSettingsTab;

	private Composite wFolderComp, wSettingsComp;

	private FormData fdFolderComp, fdSettingsComp;

	private Label wlFoldername;

	private Button wbbFoldername; // Browse: add directory

	private Button wbdFoldername; // Delete

	private Button wbeFoldername; // Edit

	private Button wbaFoldername; // Add or change

	private TextVar wFoldername;

	private FormData fdlFoldername, fdbFoldername, fdbdFoldername, fdbeFoldername, fdbaFoldername, fdFoldername;

	private Label wlFoldernameList;

	private TableView wFoldernameList;

	private FormData fdlFoldernameList, fdFoldernameList;

	private GetSubFoldersMeta input;

	private int middle, margin;

	private ModifyListener lsMod;

	private Group wOriginFolders;
	
	private FormData fdOriginFolders,fdFoldernameField,fdlFoldernameField;
    private Button wFolderField;
    
    private Label wlFileField,wlFilenameField;
    private ComboVar wFoldernameField;
    private FormData fdlFileField,fdFileField;
    
	private Group wAdditionalGroup;
	private FormData fdAdditionalGroup;
	
    
	private Label        wlLimit;
	private Text         wLimit;
	private FormData     fdlLimit, fdLimit;
	
	private Label        wlInclRownum;
	private Button       wInclRownum;
	private FormData     fdlInclRownum, fdRownum;

	private Label        wlInclRownumField;
	private TextVar      wInclRownumField;
	private FormData     fdlInclRownumField, fdInclRownumField;
	
	
	public GetSubFoldersDialog(Shell parent, Object in, TransMeta transMeta, String sname)
	{
		super(parent, (BaseStepMeta) in, transMeta, sname);
		input = (GetSubFoldersMeta) in;
	}

	public String open()
	{
		Shell parent = getParent();
		Display display = parent.getDisplay();

		shell = new Shell(parent, SWT.DIALOG_TRIM | SWT.RESIZE | SWT.MAX | SWT.MIN);
		props.setLook(shell);
		setShellImage(shell, input);

		lsMod = new ModifyListener()
		{
			public void modifyText(ModifyEvent e)
			{
				input.setChanged();
			}
		};
		changed = input.hasChanged();

		FormLayout formLayout = new FormLayout();
		formLayout.marginWidth = Const.FORM_MARGIN;
		formLayout.marginHeight = Const.FORM_MARGIN;

		shell.setLayout(formLayout);
		shell.setText(BaseMessages.getString(PKG, "GetSubFoldersDialog.DialogTitle"));

		middle = props.getMiddlePct();
		margin = Const.MARGIN;

		// Stepname line
		wlStepname = new Label(shell, SWT.RIGHT);
		wlStepname.setText(BaseMessages.getString(PKG, "System.Label.StepName"));
		props.setLook(wlStepname);
		fdlStepname = new FormData();
		fdlStepname.left = new FormAttachment(0, 0);
		fdlStepname.top = new FormAttachment(0, margin);
		fdlStepname.right = new FormAttachment(middle, -margin);
		wlStepname.setLayoutData(fdlStepname);
		wStepname = new Text(shell, SWT.SINGLE | SWT.LEFT | SWT.BORDER);
		wStepname.setText(stepname);
		props.setLook(wStepname);
		wStepname.addModifyListener(lsMod);
		fdStepname = new FormData();
		fdStepname.left = new FormAttachment(middle, 0);
		fdStepname.top = new FormAttachment(0, margin);
		fdStepname.right = new FormAttachment(100, 0);
		wStepname.setLayoutData(fdStepname);

		wTabFolder = new CTabFolder(shell, SWT.BORDER);
		props.setLook(wTabFolder, Props.WIDGET_STYLE_TAB);

		// ////////////////////////
		// START OF FILE TAB ///
		// ////////////////////////
		wFolderTab = new CTabItem(wTabFolder, SWT.NONE);
		wFolderTab.setText(BaseMessages.getString(PKG, "GetSubFoldersDialog.FolderTab.TabTitle"));

		wFolderComp = new Composite(wTabFolder, SWT.NONE);
		props.setLook(wFolderComp);

		FormLayout fileLayout = new FormLayout();
		fileLayout.marginWidth = 3;
		fileLayout.marginHeight = 3;
		wFolderComp.setLayout(fileLayout);
		
		// ///////////////////////////////
		// START OF Origin files GROUP  //
		///////////////////////////////// 

		wOriginFolders = new Group(wFolderComp, SWT.SHADOW_NONE);
		props.setLook(wOriginFolders);
		wOriginFolders.setText(BaseMessages.getString(PKG, "GetSubFoldersDialog.wOriginFiles.Label"));
		
		FormLayout OriginFilesgroupLayout = new FormLayout();
		OriginFilesgroupLayout.marginWidth = 10;
		OriginFilesgroupLayout.marginHeight = 10;
		wOriginFolders.setLayout(OriginFilesgroupLayout);
		
		//Is Filename defined in a Field		
		wlFileField = new Label(wOriginFolders, SWT.RIGHT);
		wlFileField.setText(BaseMessages.getString(PKG, "GetSubFoldersDialog.FolderField.Label"));
		props.setLook(wlFileField);
		fdlFileField = new FormData();
		fdlFileField.left = new FormAttachment(0, -margin);
		fdlFileField.top = new FormAttachment(0, margin);
		fdlFileField.right = new FormAttachment(middle, -2*margin);
		wlFileField.setLayoutData(fdlFileField);
		
		
		wFolderField = new Button(wOriginFolders, SWT.CHECK);
		props.setLook(wFolderField);
		wFolderField.setToolTipText(BaseMessages.getString(PKG, "GetSubFoldersDialog.FileField.Tooltip"));
		fdFileField = new FormData();
		fdFileField.left = new FormAttachment(middle, -margin);
		fdFileField.top = new FormAttachment(0, margin);
		wFolderField.setLayoutData(fdFileField);		
		SelectionAdapter lfilefield = new SelectionAdapter()
        {
            public void widgetSelected(SelectionEvent arg0)
            {
            	ActiveFileField();
            	input.setChanged();
            }
        };
        wFolderField.addSelectionListener(lfilefield);
        
        
		// Filename field
		wlFilenameField=new Label(wOriginFolders, SWT.RIGHT);
        wlFilenameField.setText(BaseMessages.getString(PKG, "GetSubFoldersDialog.wlFilenameField.Label"));
        props.setLook(wlFilenameField);
        fdlFoldernameField=new FormData();
        fdlFoldernameField.left = new FormAttachment(0, -margin);
        fdlFoldernameField.top  = new FormAttachment(wFolderField, margin);
        fdlFoldernameField.right= new FormAttachment(middle, -2*margin);
        wlFilenameField.setLayoutData(fdlFoldernameField);
        
        
        wFoldernameField=new ComboVar(transMeta,wOriginFolders, SWT.BORDER | SWT.READ_ONLY);
        wFoldernameField.setEditable(true);
        props.setLook(wFoldernameField);
        wFoldernameField.addModifyListener(lsMod);
        fdFoldernameField=new FormData();
        fdFoldernameField.left = new FormAttachment(middle, -margin);
        fdFoldernameField.top  = new FormAttachment(wFolderField, margin);
        fdFoldernameField.right= new FormAttachment(100, -margin);
        wFoldernameField.setLayoutData(fdFoldernameField);  
        wFoldernameField.setEnabled(false);
        wFoldernameField.addFocusListener(new FocusListener()
        {
           public void focusLost(org.eclipse.swt.events.FocusEvent e)
            {
            }
            public void focusGained(org.eclipse.swt.events.FocusEvent e)
            {
                Cursor busy = new Cursor(shell.getDisplay(), SWT.CURSOR_WAIT);
                shell.setCursor(busy);
                BaseStepDialog.getFieldsFromPrevious(wFoldernameField, transMeta, stepMeta);
                shell.setCursor(null);
                busy.dispose();
            }
        }
    );        

        	  
        fdOriginFolders = new FormData();
		fdOriginFolders.left = new FormAttachment(0, margin);
		fdOriginFolders.top = new FormAttachment(wFoldernameList, margin);
		fdOriginFolders.right = new FormAttachment(100, -margin);
		wOriginFolders.setLayoutData(fdOriginFolders);
		
		// ///////////////////////////////////////////////////////////
		// / END OF Origin files GROUP
		// ///////////////////////////////////////////////////////////		


		// Foldername line
		wlFoldername = new Label(wFolderComp, SWT.RIGHT);
		wlFoldername.setText(BaseMessages.getString(PKG, "GetSubFoldersDialog.Filename.Label"));
		props.setLook(wlFoldername);
		fdlFoldername = new FormData();
		fdlFoldername.left = new FormAttachment(0, 0);
		fdlFoldername.top = new FormAttachment(wOriginFolders, margin);
		fdlFoldername.right = new FormAttachment(middle, -margin);
		wlFoldername.setLayoutData(fdlFoldername);

		wbbFoldername = new Button(wFolderComp, SWT.PUSH | SWT.CENTER);
		props.setLook(wbbFoldername);
		wbbFoldername.setText(BaseMessages.getString(PKG, "System.Button.Browse"));
		wbbFoldername.setToolTipText(BaseMessages.getString(PKG, "System.Tooltip.BrowseForFileOrDirAndAdd"));
		fdbFoldername = new FormData();
		fdbFoldername.right = new FormAttachment(100, 0);
		fdbFoldername.top = new FormAttachment(wOriginFolders, margin);
		wbbFoldername.setLayoutData(fdbFoldername);

		wbaFoldername = new Button(wFolderComp, SWT.PUSH | SWT.CENTER);
		props.setLook(wbaFoldername);
		wbaFoldername.setText(BaseMessages.getString(PKG, "GetSubFoldersDialog.FoldernameAdd.Button"));
		wbaFoldername.setToolTipText(BaseMessages.getString(PKG, "GetSubFoldersDialog.FoldernameAdd.Tooltip"));
		fdbaFoldername = new FormData();
		fdbaFoldername.right = new FormAttachment(wbbFoldername, -margin);
		fdbaFoldername.top = new FormAttachment(wOriginFolders, margin);
		wbaFoldername.setLayoutData(fdbaFoldername);

		wFoldername = new TextVar(transMeta, wFolderComp, SWT.SINGLE | SWT.LEFT | SWT.BORDER);
		props.setLook(wFoldername);
		wFoldername.addModifyListener(lsMod);
		fdFoldername = new FormData();
		fdFoldername.left = new FormAttachment(middle, 0);
		fdFoldername.right = new FormAttachment(wbaFoldername, -margin);
		fdFoldername.top = new FormAttachment(wOriginFolders, margin);
		wFoldername.setLayoutData(fdFoldername);

		// Filename list line
		wlFoldernameList = new Label(wFolderComp, SWT.RIGHT);
		wlFoldernameList.setText(BaseMessages.getString(PKG, "GetSubFoldersDialog.FoldernameList.Label"));
		props.setLook(wlFoldernameList);
		fdlFoldernameList = new FormData();
		fdlFoldernameList.left = new FormAttachment(0, 0);
		fdlFoldernameList.top = new FormAttachment(wFoldername, margin);
		fdlFoldernameList.right = new FormAttachment(middle, -margin);
		wlFoldernameList.setLayoutData(fdlFoldernameList);

		// Buttons to the right of the screen...
		wbdFoldername = new Button(wFolderComp, SWT.PUSH | SWT.CENTER);
		props.setLook(wbdFoldername);
		wbdFoldername.setText(BaseMessages.getString(PKG, "GetSubFoldersDialog.FoldernameDelete.Button"));
		wbdFoldername.setToolTipText(BaseMessages.getString(PKG, "GetSubFoldersDialog.FoldernameDelete.Tooltip"));
		fdbdFoldername = new FormData();
		fdbdFoldername.right = new FormAttachment(100, 0);
		fdbdFoldername.top = new FormAttachment(wFoldername, 40);
		wbdFoldername.setLayoutData(fdbdFoldername);

		wbeFoldername = new Button(wFolderComp, SWT.PUSH | SWT.CENTER);
		props.setLook(wbeFoldername);
		wbeFoldername.setText(BaseMessages.getString(PKG, "GetSubFoldersDialog.FilenameEdit.Button"));
		wbeFoldername.setToolTipText(BaseMessages.getString(PKG, "GetSubFoldersDialog.FilenameEdit.Tooltip"));
		fdbeFoldername = new FormData();
		fdbeFoldername.right = new FormAttachment(100, 0);
		fdbeFoldername.left = new FormAttachment(wbdFoldername, 0, SWT.LEFT);
		fdbeFoldername.top = new FormAttachment(wbdFoldername, margin);
		wbeFoldername.setLayoutData(fdbeFoldername);

		ColumnInfo[] colinfo = new ColumnInfo[2]; 
		colinfo[0]=	new ColumnInfo(BaseMessages.getString(PKG, "GetSubFoldersDialog.FileDirColumn.Column"),	ColumnInfo.COLUMN_TYPE_TEXT, false) ;
        colinfo[0].setUsingVariables(true);
		colinfo[1]=new ColumnInfo(BaseMessages.getString(PKG, "GetSubFoldersDialog.Required.Column"),ColumnInfo.COLUMN_TYPE_CCOMBO,  GetSubFoldersMeta.RequiredFoldersDesc);
		colinfo[1].setToolTip(BaseMessages.getString(PKG, "GetSubFoldersDialog.Required.Tooltip"));	

		wFoldernameList = new TableView(transMeta, wFolderComp, SWT.FULL_SELECTION | SWT.SINGLE | SWT.BORDER, colinfo,
				colinfo.length, lsMod, props);
		props.setLook(wFoldernameList);
		fdFoldernameList = new FormData();
		fdFoldernameList.left = new FormAttachment(middle, 0);
		fdFoldernameList.right = new FormAttachment(wbdFoldername, -margin);
		fdFoldernameList.top = new FormAttachment(wFoldername, margin);
		fdFoldernameList.bottom = new FormAttachment(100, -margin);
		wFoldernameList.setLayoutData(fdFoldernameList);

		fdFolderComp = new FormData();
		fdFolderComp.left = new FormAttachment(0, 0);
		fdFolderComp.top = new FormAttachment(0, 0);
		fdFolderComp.right = new FormAttachment(100, 0);
		fdFolderComp.bottom = new FormAttachment(100, 0);
		wFolderComp.setLayoutData(fdFolderComp);

		wFolderComp.layout();
		wFolderTab.setControl(wFolderComp);

		// ///////////////////////////////////////////////////////////
		// / END OF FILE TAB
		// ///////////////////////////////////////////////////////////

		fdTabFolder = new FormData();
		fdTabFolder.left = new FormAttachment(0, 0);
		fdTabFolder.top = new FormAttachment(wStepname, margin);
		fdTabFolder.right = new FormAttachment(100, 0);
		fdTabFolder.bottom = new FormAttachment(100, -50);
		wTabFolder.setLayoutData(fdTabFolder);

		// ////////////////////////
		// START OF Filter TAB ///
		// ////////////////////////
		wSettingsTab = new CTabItem(wTabFolder, SWT.NONE);
		wSettingsTab.setText(BaseMessages.getString(PKG, "GetSubFoldersDialog.SettingsTab.TabTitle"));

		wSettingsComp = new Composite(wTabFolder, SWT.NONE);
		props.setLook(wSettingsComp);

		FormLayout filesettingLayout = new FormLayout();
		filesettingLayout.marginWidth = 3;
		filesettingLayout.marginHeight = 3;
		wSettingsComp.setLayout(fileLayout);

		// /////////////////////////////////
		// START OF Additional Fields GROUP
		// /////////////////////////////////

		wAdditionalGroup = new Group(wSettingsComp, SWT.SHADOW_NONE);
		props.setLook(wAdditionalGroup);
		wAdditionalGroup.setText(BaseMessages.getString(PKG, "GetSubFoldersDialog.Group.AdditionalGroup.Label"));
		
		FormLayout additionalgroupLayout = new FormLayout();
		additionalgroupLayout.marginWidth = 10;
		additionalgroupLayout.marginHeight = 10;
		wAdditionalGroup.setLayout(additionalgroupLayout);
	
		wlInclRownum=new Label(wAdditionalGroup, SWT.RIGHT);
		wlInclRownum.setText(BaseMessages.getString(PKG, "GetSubFoldersDialog.InclRownum.Label"));
 		props.setLook(wlInclRownum);
		fdlInclRownum=new FormData();
		fdlInclRownum.left = new FormAttachment(0, 0);
		fdlInclRownum.top  = new FormAttachment(0, 2*margin);
		fdlInclRownum.right= new FormAttachment(middle, -margin);
		wlInclRownum.setLayoutData(fdlInclRownum);
		wInclRownum=new Button(wAdditionalGroup, SWT.CHECK );
 		props.setLook(wInclRownum);
		wInclRownum.setToolTipText(BaseMessages.getString(PKG, "GetSubFoldersDialog.InclRownum.Tooltip"));
		fdRownum=new FormData();
		fdRownum.left = new FormAttachment(middle, 0);
		fdRownum.top  = new FormAttachment(0, 2*margin);
		wInclRownum.setLayoutData(fdRownum);	
		SelectionAdapter linclRownum = new SelectionAdapter()
        {
            public void widgetSelected(SelectionEvent arg0)
            {
            	ActiveIncludeRowNum();
            	input.setChanged();
            }
        };
        wInclRownum.addSelectionListener(linclRownum);

		wlInclRownumField=new Label(wAdditionalGroup, SWT.RIGHT);
		wlInclRownumField.setText(BaseMessages.getString(PKG, "GetSubFoldersDialog.InclRownumField.Label"));
 		props.setLook(wlInclRownumField);
		fdlInclRownumField=new FormData();
		fdlInclRownumField.left = new FormAttachment(wInclRownum, margin);
		fdlInclRownumField.top  = new FormAttachment(0, 2*margin);
		wlInclRownumField.setLayoutData(fdlInclRownumField);
		wInclRownumField=new TextVar(transMeta,wAdditionalGroup, SWT.SINGLE | SWT.LEFT | SWT.BORDER);
 		props.setLook(wInclRownumField);
		wInclRownumField.addModifyListener(lsMod);
		fdInclRownumField=new FormData();
		fdInclRownumField.left = new FormAttachment(wlInclRownumField, margin);
		fdInclRownumField.top  = new FormAttachment(0, 2*margin);
		fdInclRownumField.right= new FormAttachment(100, 0);
		wInclRownumField.setLayoutData(fdInclRownumField);
		
		
		fdAdditionalGroup = new FormData();
		fdAdditionalGroup.left = new FormAttachment(0, margin);
		fdAdditionalGroup.top = new FormAttachment(0, margin);
		fdAdditionalGroup.right = new FormAttachment(100, -margin);
		wAdditionalGroup.setLayoutData(fdAdditionalGroup);
		
		// ///////////////////////////////////////////////////////////
		// / END OF DESTINATION ADDRESS  GROUP
		// ///////////////////////////////////////////////////////////
		
		
		
		wlLimit=new Label(wSettingsComp, SWT.RIGHT);
		wlLimit.setText(BaseMessages.getString(PKG, "GetSubFoldersDialog.Limit.Label"));
 		props.setLook(wlLimit);
		fdlLimit=new FormData();
		fdlLimit.left = new FormAttachment(0, 0);
		fdlLimit.top  = new FormAttachment(wAdditionalGroup, 2*margin);
		fdlLimit.right= new FormAttachment(middle, -margin);
		wlLimit.setLayoutData(fdlLimit);
		wLimit=new Text(wSettingsComp, SWT.SINGLE | SWT.LEFT | SWT.BORDER);
 		props.setLook(wLimit);
		wLimit.addModifyListener(lsMod);
		fdLimit=new FormData();
		fdLimit.left = new FormAttachment(middle, 0);
		fdLimit.top  = new FormAttachment(wAdditionalGroup, 2*margin);
		fdLimit.right= new FormAttachment(100, 0);
		wLimit.setLayoutData(fdLimit);
		
		
		fdSettingsComp = new FormData();
		fdSettingsComp.left = new FormAttachment(0, 0);
		fdSettingsComp.top = new FormAttachment(0, 0);
		fdSettingsComp.right = new FormAttachment(100, 0);
		fdSettingsComp.bottom = new FormAttachment(100, 0);
		wSettingsComp.setLayoutData(fdSettingsComp);

		wSettingsComp.layout();
		wSettingsTab.setControl(wSettingsComp);

		// ///////////////////////////////////////////////////////////
		// / END OF FILE Filter TAB
		// ///////////////////////////////////////////////////////////

		wOK = new Button(shell, SWT.PUSH);
		wOK.setText(BaseMessages.getString(PKG, "System.Button.OK"));

		wPreview = new Button(shell, SWT.PUSH);
		wPreview.setText(BaseMessages.getString(PKG, "GetSubFoldersDialog.Preview.Button"));

		wCancel = new Button(shell, SWT.PUSH);
		wCancel.setText(BaseMessages.getString(PKG, "System.Button.Cancel"));

		setButtonPositions(new Button[] { wOK, wPreview, wCancel }, margin, wTabFolder);

		// Add listeners
		lsOK = new Listener()
		{
			public void handleEvent(Event e)
			{
				ok();
			}
		};
		lsPreview = new Listener()
		{
			public void handleEvent(Event e)
			{
				preview();
			}
		};
		lsCancel = new Listener()
		{
			public void handleEvent(Event e)
			{
				cancel();
			}
		};

		wOK.addListener(SWT.Selection, lsOK);
		wPreview.addListener(SWT.Selection, lsPreview);
		wCancel.addListener(SWT.Selection, lsCancel);

		lsDef = new SelectionAdapter()
		{
			public void widgetDefaultSelected(SelectionEvent e)
			{
				ok();
			}
		};

		wStepname.addSelectionListener(lsDef);

		// Add the file to the list of files...
		SelectionAdapter selA = new SelectionAdapter()
		{
			public void widgetSelected(SelectionEvent arg0)
			{
				wFoldernameList.add(new String[] { wFoldername.getText()});
				wFoldername.setText("");
				wFoldernameList.removeEmptyRows();
				wFoldernameList.setRowNums();
				wFoldernameList.optWidth(true);
			}
		};
		wbaFoldername.addSelectionListener(selA);
		wFoldername.addSelectionListener(selA);

		// Delete files from the list of files...
		wbdFoldername.addSelectionListener(new SelectionAdapter()
		{
			public void widgetSelected(SelectionEvent arg0)
			{
				int idx[] = wFoldernameList.getSelectionIndices();
				wFoldernameList.remove(idx);
				wFoldernameList.removeEmptyRows();
				wFoldernameList.setRowNums();
			}
		});

		// Edit the selected file & remove from the list...
		wbeFoldername.addSelectionListener(new SelectionAdapter()
		{
			public void widgetSelected(SelectionEvent arg0)
			{
				int idx = wFoldernameList.getSelectionIndex();
				if (idx >= 0)
				{
					String string[] = wFoldernameList.getItem(idx);
					wFoldername.setText(string[0]);
					wFoldernameList.remove(idx);
				}
				wFoldernameList.removeEmptyRows();
				wFoldernameList.setRowNums();
			}
		});


		// Listen to the Browse... button
		wbbFoldername.addSelectionListener(new SelectionAdapter()
		{
			public void widgetSelected(SelectionEvent e)
			{
				
					DirectoryDialog dialog = new DirectoryDialog(shell, SWT.OPEN);
					if (wFoldername.getText() != null)
					{
						String fpath = transMeta.environmentSubstitute(wFoldername.getText());
						dialog.setFilterPath(fpath);
					}

					if (dialog.open() != null)
					{
						String str = dialog.getFilterPath();
						wFoldername.setText(str);
					}
				
			}
		});

		// Detect X or ALT-F4 or something that kills this window...
		shell.addShellListener(new ShellAdapter()
		{
			public void shellClosed(ShellEvent e)
			{
				cancel();
			}
		});

		wTabFolder.setSelection(0);

		// Set the shell size, based upon previous time...
		getData(input);
		ActiveFileField();
		ActiveIncludeRowNum();
		setSize();

		shell.open();
		while (!shell.isDisposed())
		{
			if (!display.readAndDispatch())
				display.sleep();
		}
		return stepname;
	}
	private void ActiveIncludeRowNum()
	{
		wlInclRownumField.setEnabled(wInclRownum.getSelection());
		wInclRownumField.setEnabled(wInclRownum.getSelection());
	}
	private void ActiveFileField()
	{
		if(wFolderField.getSelection())
			wLimit.setText("0");
		wlFilenameField.setEnabled(wFolderField.getSelection());
		wFoldernameField.setEnabled(wFolderField.getSelection());
			
		wlFoldername.setEnabled(!wFolderField.getSelection());
		wbbFoldername.setEnabled(!wFolderField.getSelection());
		wbaFoldername.setEnabled(!wFolderField.getSelection());		
		wFoldername.setEnabled(!wFolderField.getSelection());			
		wlFoldernameList.setEnabled(!wFolderField.getSelection());		
		wbdFoldername.setEnabled(!wFolderField.getSelection());
		wbeFoldername.setEnabled(!wFolderField.getSelection());
		wlFoldernameList.setEnabled(!wFolderField.getSelection());
		wFoldernameList.setEnabled(!wFolderField.getSelection());
		wPreview.setEnabled(!wFolderField.getSelection());
		wlLimit.setEnabled(!wFolderField.getSelection());
		wLimit.setEnabled(!wFolderField.getSelection());

	}
	/**
	 * Read the data from the TextFileInputMeta object and show it in this
	 * dialog.
	 * 
	 * @param meta
	 *            The TextFileInputMeta object to obtain the data from.
	 */
	public void getData(GetSubFoldersMeta meta)
	{
		final GetSubFoldersMeta in = meta;

		if (in.getFolderName() != null)
		{
			wFoldernameList.removeAll();
			for (int i = 0; i < in.getFolderName().length; i++)
			{
				wFoldernameList.add(new String[] { in.getFolderName()[i], 
						in.getRequiredFilesDesc(in.getFolderRequired()[i]) } );
				
			}
			wFoldernameList.removeEmptyRows();
			wFoldernameList.setRowNums();
			wFoldernameList.optWidth(true);

		
			wInclRownum.setSelection(in.includeRowNumber());
			wFolderField.setSelection(in.isFoldernameDynamic());
			if (in.getRowNumberField()!=null) wInclRownumField.setText(in.getRowNumberField());
			if (in.getDynamicFoldernameField()!=null) wFoldernameField.setText(in.getDynamicFoldernameField());
			wLimit.setText(""+in.getRowLimit());

		}
		wStepname.selectAll();
	}

	private void cancel()
	{
		stepname = null;
		input.setChanged(changed);
		dispose();
	}

	private void ok()
	{
		if (Const.isEmpty(wStepname.getText())) return;
		getInfo(input);
		dispose();
	}

	private void getInfo(GetSubFoldersMeta in)
	{
		stepname = wStepname.getText(); // return value

		int nrfiles = wFoldernameList.getItemCount();
		in.allocate(nrfiles);

		in.setFolderName(wFoldernameList.getItems(0));
		in.setFolderRequired(wFoldernameList.getItems(1));

		in.setIncludeRowNumber( wInclRownum.getSelection() );
		in.setDynamicFoldernameField( wFoldernameField.getText() );
		in.setFolderField(wFolderField.getSelection() );
		in.setRowNumberField( wInclRownumField.getText() );
		in.setRowLimit( Const.toLong(wLimit.getText(), 0L) );

	}

	// Preview the data
	private void preview()
	{
		// Create the XML input step
		GetSubFoldersMeta oneMeta = new GetSubFoldersMeta();
		getInfo(oneMeta);

		TransMeta previewMeta = TransPreviewFactory.generatePreviewTransformation(transMeta, oneMeta, wStepname
				.getText());

		EnterNumberDialog numberDialog = new EnterNumberDialog(shell, props.getDefaultPreviewSize(), BaseMessages.getString(PKG, "GetSubFoldersDialog.PreviewSize.DialogTitle"), BaseMessages.getString(PKG, "GetSubFoldersDialog.PreviewSize.DialogMessage"));
		int previewSize = numberDialog.open();
		if (previewSize > 0)
		{
			TransPreviewProgressDialog progressDialog = new TransPreviewProgressDialog(shell, previewMeta,
					new String[] { wStepname.getText() }, new int[] { previewSize });
			progressDialog.open();

			if (!progressDialog.isCancelled())
			{
				Trans trans = progressDialog.getTrans();
				String loggingText = progressDialog.getLoggingText();

				if (trans.getResult() != null && trans.getResult().getNrErrors() > 0)
				{
					EnterTextDialog etd = new EnterTextDialog(shell, BaseMessages.getString(PKG, "System.Dialog.Error.Title"), BaseMessages.getString(PKG, "GetSubFoldersDialog.ErrorInPreview.DialogMessage"), loggingText, true);
					etd.setReadOnly();
					etd.open();
				}
				
				
				PreviewRowsDialog prd = new PreviewRowsDialog(shell, transMeta, SWT.NONE, wStepname.getText(),progressDialog.getPreviewRowsMeta(wStepname.getText()),
						progressDialog.getPreviewRows(wStepname.getText()), loggingText);
				prd.open();
			}
		}
	}
}
