/*
    * $Header: /cvsroot/jdbforms/dbforms/src/org/dbforms/devgui/ProjectData.java,v 1.14 2004/10/11 08:54:59 hkollmann Exp $
    * $Revision: 1.14 $
    * $Date: 2004/10/11 08:54:59 $
    *
    * DbForms - a Rapid Application Development Framework
    * Copyright (C) 2001 Joachim Peer <joepeer@excite.com>
    *
    * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library 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
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
   */
  
  /*
   *  Project.java
   *
   *  Created on 26. April 2001, 15:14
   */
  package org.dbforms.devgui;
  
  import java.io.*;
  
  import java.util.*;
  
  
  
  /***
   * DOCUMENT ME!
   *
   * @author Joe Peer Changes: - 2002-03-4: usage of default property and
   *         constant string values via new Interface Propertynames (dikr)
   *
   */
  public class ProjectData implements Serializable, PropertyNames {
     private static Properties defaultProps;
  
     // contains default values for properties
     // set default property values:
     static {
        defaultProps = new Properties();
  
        defaultProps.setProperty(INCLUDE_SCHEMANAME, FALSESTRING);
  
        defaultProps.setProperty(INCLUDE_CATALOGNAME, FALSESTRING);
  
        defaultProps.setProperty(AUTOCOMMIT_MODE, TRUESTRING);
  
        defaultProps.setProperty(CATALOG_SELECTION, ALL);
  
        defaultProps.setProperty(SCHEMA_SELECTION, ALL);
  
        defaultProps.setProperty(TABLE_SELECTION, ALL);
  
        defaultProps.setProperty(EXAMINE_TABLES, TRUESTRING);
  
        defaultProps.setProperty(EXAMINE_VIEWS, TRUESTRING);
  
        defaultProps.setProperty(EXAMINE_SYSTABS, FALSESTRING);
  
        defaultProps.setProperty(WRITE_STD_TYPENAMES, FALSESTRING);
  
        defaultProps.setProperty(FOREIGNKEY_DETECTION, USE_GETIMPORTEDKEYS);
     }
  
     private File       file;
     private Properties props;
     private boolean    unsavedChanges = false;
  
     /***
      * Creates new Project
      */
     public ProjectData() {
        this.props = new Properties(defaultProps);
  
        String dbFormsHomeStr = System.getProperty("DBFORMS_HOME");
  
        if (dbFormsHomeStr != null) {
           setProperty(STYLESHEET_DIR,
                       dbFormsHomeStr
                       + System.getProperties().getProperty("file.separator")
                       + "xsl-stylesheets");
        }
  
        unsavedChanges = false;
     }
  
  
     /***
      * Constructor for the ProjectData object
     *
     * @param props Description of the Parameter
     */
    public ProjectData(Properties props) {
       this.props = props;
 
       unsavedChanges = false;
 
       // If a user hasn't specified a STYLESHEET_DIR, then guess at one!
       String dbFormsHomeStr = props.getProperty(STYLESHEET_DIR);
 
       if ("".equals(dbFormsHomeStr)) {
          dbFormsHomeStr = System.getProperty("DBFORMS_HOME");
 
          if (dbFormsHomeStr != null) {
             setProperty(STYLESHEET_DIR,
                         dbFormsHomeStr
                         + System.getProperties().getProperty("file.separator")
                         + "xsl-stylesheets");
 
             unsavedChanges = true;
          }
       }
    }
 
    /***
     * Sets the file attribute of the ProjectData object
     *
     * @param file The new file value
     */
    public void setFile(File file) {
       this.file = file;
    }
 
 
    /***
     * Gets the file attribute of the ProjectData object
     *
     * @return The file value
     */
    public File getFile() {
       return file;
    }
 
 
    /***
     * Sets the property attribute of the ProjectData object
     *
     * @param key The new property value
     * @param value The new property value
     */
    public void setProperty(String key,
                            String value) {
       String oldValue = getProperty(key);
 
       if (!oldValue.equals(value)) {
          props.setProperty(key, value);
 
          this.unsavedChanges = true;
 
          System.out.println("unsaved state look like this:" + this.toString());
       }
    }
 
 
    /***
     * Gets the property attribute of the ProjectData object
     *
     * @param prop Description of the Parameter
     *
     * @return The property value
     */
    public String getProperty(String prop) {
       return props.getProperty(prop, "");
 
       // return default value "" instead of null if not found
    }
 
 
    /***
     * Gets the unsaved attribute of the ProjectData object
     *
     * @return The unsaved value
     */
    public boolean isUnsaved() {
       return unsavedChanges;
    }
 
 
    /***
     * Description of the Method
     *
     * @param f Description of the Parameter
     *
     * @return Description of the Return Value
     *
     * @exception IOException Description of the Exception
     */
    public static ProjectData loadFromDisc(File f) throws IOException {
       Properties l_props = new Properties(defaultProps);
 
       l_props.load(new FileInputStream(f));
 
       ProjectData pd = new ProjectData(l_props);
 
       pd.setFile(f);
 
       return pd;
    }
 
 
    /***
     * Description of the Method
     *
     * @param f Description of the Parameter
     *
     * @exception IOException Description of the Exception
     */
    public void storeToDisc(File f) throws IOException {
       this.props.store(new FileOutputStream(f), "DbForms DevGUI Property File");
 
       this.file = f;
 
       this.unsavedChanges = false;
    }
 
 
    /***
     * Description of the Method
     *
     * @return Description of the Return Value
     */
    public String toString() {
       StringBuffer buf = new StringBuffer();
 
       Enumeration  e = props.propertyNames();
 
       boolean      first = true;
 
       while (e.hasMoreElements()) {
          if (first) {
             first = false;
          } else {
             buf.append(", ");
          }
 
          String aPropsName = (String) e.nextElement();
 
          buf.append(aPropsName);
 
          buf.append("=");
 
          buf.append(this.getProperty(aPropsName));
       }
 
       return buf.toString();
    }
 }