/*=============================================================================
|
| NAME
|  
|     FileAction.java
|
| DESCRIPTION
|  
|     Action class for File item on the menu bar.
|    
| AUTHOR
|  
|     Sean E. O'Connor
|
| LEGAL
|
|     Prentice Version 1.1 - An Artist's Software Apprentice.
|     Copyright (C) 2003-2008 by Sean Erik O'Connor.  All Rights Reserved.
|     
|     This program is free software; you can redistribute it and/or
|     modify it under the terms of the GNU General Public License
|     as published by the Free Software Foundation;  version 2
|     of the License.
|     
|     This program is distributed in the hope that it will be useful,
|     but WITHOUT ANY WARRANTY; without even the implied warranty of
|     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
|     GNU General Public License for more details.
|     
|     You should have received a copy of the GNU General Public License
|     along with this program; if not, write to the Free Software
|     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
|     
|     The author's address is artifex@seanerikoconnor.freeservers.com. 
|
+============================================================================*/

package View ;            // Package name for this project.

import java.awt.* ;             // AWT basic window handling.
import java.awt.event.* ;       // AWT basic event handling.
import java.awt.geom.* ;        // 2D graphics.
import java.awt.image.* ;       // Images and operations.
import java.io.File ;           // File class.
import javax.swing.* ;          // Swing main GUI package.
import javax.swing.filechooser.FileFilter ; // File filter.

import Model.* ;
import Prentice.* ; // Prentice stuff.

// Class which retains the state and handles events of menu items and buttons.
class FileAction extends AbstractAction implements PrenticeConstants
{
    // Make the file chooser a class variable and initialize it.
    // That way it remembers the last opened directory from one
    // invocation to the next and remembers our other preferences.
    static private JFileChooser fileOpenDialog ;

    static
    {
        fileOpenDialog = new JFileChooser() ;

        // Title and tooltip.
        fileOpenDialog.setDialogTitle( "Open Model File" ) ;

        fileOpenDialog.setApproveButtonToolTipText( 
                "The model file contains the wireframe graphics." ) ;

        // File filter for model .mod files.
        FileFilter modelFileFilter = new ModelFileFilter( 
                ".mod", "(.mod) Model File" ) ;
        fileOpenDialog.setFileFilter( modelFileFilter ) ;

        // Don't allow (all files) to be displayed in dialog.
        fileOpenDialog.setAcceptAllFileFilterUsed( false ) ;
    }

    // File action.
    FileAction( String name )
    {
        super( name ) ;     // Name of action.
    }

    // File action with accelerator key.
    FileAction( String name, char shortcut )
    {
        this( name ) ;

        KeyStroke keystroke =
        KeyStroke.getKeyStroke( shortcut,
                                Event.CTRL_MASK ) ;

        // Shortcut key.
        if (keystroke != null)
        {
            putValue( ACCELERATOR_KEY, keystroke ) ;
        }
    }

    // File action with accelerator key and tooltip.
    FileAction( String name, char shortcut, String tooltip )
    {
        this( name, shortcut ) ;

        if (tooltip != null)
        {
            putValue( SHORT_DESCRIPTION, tooltip ) ;
        }
    }

    // Event handler.
    public void actionPerformed( ActionEvent e )
    {
        // Get unique name for submenu item.
        String name = (String) getValue( NAME ) ;

        // Take action.
        if (name.equals( NEW ))
        {
            System.err.println( "New model" ) ;
        }
        else if (name.equals( OPEN ))
        {
            System.err.println( "Open model" ) ;

            // Refresh the list of files in the directory in case
            // of user creations and deletions.
            fileOpenDialog.rescanCurrentDirectory() ;

            // Show list of model files.
            int status = fileOpenDialog.showOpenDialog( null ) ;

            //  User chose a file.
            if (status == fileOpenDialog.APPROVE_OPTION)
            {
                System.err.println( "Approved" ) ;

                // Parse the selected model file.
                ModelFileParser p = new ModelFileParser( fileOpenDialog.getSelectedFile() ) ;
                p = null ;
            }
        }
    }
}


class ModelFileFilter extends FileFilter
{
    private String description_ ;
    private String extension_ ;

    public ModelFileFilter( String extension, String description )
    {
        extension_   = extension ;
        description_ = description ;
    }

    public boolean accept( File file )
    {
        return (file.isDirectory() ||
                file.getName().toLowerCase().endsWith( extension_ )) ;
    }

    public String getDescription()
    {
        return description_ ;
    }
}