Application: gvSIG desktop » gvSIG tools: ToolBox

package es.unex.sextante.gui.core;

import java.awt.Color;

import java.awt.Frame;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import java.io.Writer;

import java.net.URL;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.Iterator;

import java.util.Set;

import javax.swing.ImageIcon;

import javax.swing.JDialog;

import javax.swing.JOptionPane;

import es.unex.sextante.core.GeoAlgorithm;

import es.unex.sextante.core.IInputFactory;

import es.unex.sextante.core.OutputFactory;

import es.unex.sextante.core.Sextante;

import es.unex.sextante.gui.cmd.ScriptAlgorithmProvider;

import es.unex.sextante.gui.help.HelpIO;

import es.unex.sextante.gui.modeler.ModelerAlgorithmProvider;

import es.unex.sextante.gui.r.RAlgorithmProvider;

import es.unex.sextante.gui.settings.Setting;

import es.unex.sextante.gui.settings.SextanteGeneralSettings;

import es.unex.sextante.gui.settings.SextanteRSettings;

import es.unex.sextante.gui.settings.SextanteGrassSettings;

import es.unex.sextante.gui.settings.SextanteSagaSettings;

import es.unex.sextante.gui.settings.SextanteModelerSettings;

import es.unex.sextante.gui.settings.SextanteScriptsSettings;

/**

 * This class centralizes most actions related to the SextanteGUI, containing methods to show dialogs and retrieve basic values

 * used by GUI elements

 */

public class SextanteGUI {

   public static final int                            HISTORY                     = 0;

   public static final int                            COMMANDLINE                 = 1;

   private static IInputFactory                       m_InputFactory;

   private static OutputFactory                       m_OutputFactory;

   private static IGUIFactory                         m_GUIFactory                = new DefaultGUIFactory();

   private static IPostProcessTaskFactory             m_PostProcessTaskFactory;

   private static JDialog                             m_LastCommandOriginParentPanel;

   private static int                                 m_iLastCommandOrigin;

   private static Frame                               m_MainFrame;

   private static boolean                             m_bShowOnlyActiveAlgorithms = false;

   private static String                              m_sOutputFolder;

   private static String                              m_sSextantePath;

   private static HashMap<String, String>             m_Settings                  = new HashMap<String, String>();

   private static HashMap<String, String>             m_DefaultSettings           = new HashMap<String, String>();

   private static IDataRenderer                       m_Renderer;

   private final static HashMap<String, Class>        m_ParametersPanel           = new HashMap<String, Class>();

   private final static HashMap<String, Class>        m_ModelerParametersPanel    = new HashMap<String, Class>();

   private final static ArrayList<IAlgorithmProvider> m_AlgorithmProviders        = new ArrayList<IAlgorithmProvider>();

   public final static ImageIcon                      SEXTANTE_ICON               = new ImageIcon(

                                                                                           SextanteGUI.class.getClassLoader().getResource(

                                                                                                    "images/module2.png"));

   public final static Color COLOR_WHITE = new Color(255, 255, 255, 255);

   public final static Color COLOR_GREY = new Color(128, 128, 128, 255);

   public final static Color COLOR_BLACK = new Color(0, 0, 0, 255);

   public final static Color COLOR_RED = new Color (255, 51, 51, 255);

   public final static Color COLOR_ORANGE = new Color(255, 103, 51, 255);

   public final static Color COLOR_YELLOW = new Color(255, 255, 51, 255);

   public final static Color COLOR_GREEN_LIGHT = new Color(51, 255, 51, 255);

   public final static Color COLOR_GREEN_DARK = new Color(0, 184, 0, 255);

   public final static Color COLOR_BLUE_LIGHT = new Color (102, 179, 255, 255);

   public final static Color COLOR_BLUE_DARK = new Color (0, 102, 204, 255);

   public final static Color COLOR_PINK = new Color(255, 153, 255, 255);

   public final static Color COLOR_PURPLE = new Color(163, 71, 255, 255);

   public final static Color COLOR_BROWN_LIGHT = new Color(255, 168, 82, 255);

   public final static Color COLOR_BROWN_DARK = new Color(204, 102, 0, 255);

   static {          

      m_AlgorithmProviders.add(new ScriptAlgorithmProvider());

      m_AlgorithmProviders.add(new ModelerAlgorithmProvider());

   }

   /**

    * Sets a new main frame. This will be used as the parent frame by SEXTANTE GUI elements

    * 

    * @param frame

    *                The main frame

    */

   public static void setMainFrame(final Frame frame) {

      m_MainFrame = frame;

   }

   /**

    * Returns the current main frame

    * 

    * @return the current main frame

    */

   public static Frame getMainFrame() {

      return m_MainFrame;

   }

   /** ************************************************************ */

   /**

    * Returns the current input factory

    * 

    * @see IInputFactory.

    * @return the current input factory

    */

   public static IInputFactory getInputFactory() {

      return m_InputFactory;

   }

   /**

    * Sets a new input factory as the current one

    * 

    * @param inputFactory

    *                the new input factory

    */

   public static void setInputFactory(final IInputFactory inputFactory) {

      m_InputFactory = inputFactory;

   }

   /**

    * Returns the current OutputFactory

    * 

    * @return the current OutputFactory

    */

   public static OutputFactory getOutputFactory() {

      return m_OutputFactory;

   }

   /**

    * sets a new output factory

    * 

    * @param outputFactory

    *                the new output factory

    */

   public static void setOutputFactory(final OutputFactory outputFactory) {

      m_OutputFactory = outputFactory;

      m_OutputFactory.setDefaultNoDataValue(getDefaultNoDataValue());

   }

   /**

    * Returns the current GUIFactory

    * 

    * @return the current GUIFactory

    */

   public static IGUIFactory getGUIFactory() {

      return m_GUIFactory;

   }

   /**

    * sets a new GUI factory

    * 

    * @param guiFactory

    *                the new GUI factory

    */

   public static void setGUIFactory(final IGUIFactory guiFactory) {

      m_GUIFactory = guiFactory;

   }

   /**

    * Returns the task to post-process the algorithm outputs, usually to add them to the GUI of the GIS app.

    * 

    * @param alg

    *                the algorithm to postprocess. Since this task will mainly deal with output results, the algorithm should have

    *                been previously executed, so it contains non-null output values

    * @param bShowResultsDialog

    *                if this parameter is true, the task will show the results dialog if the algorithm has produced some kind of

    *                output other than layers or tables. If it is false, those results will be added to the set of current

    *                results, but the results dialog will not be shown

    * 

    * @return a task to postprocess the given algorithm

    */

   public static Runnable getPostProcessTask(final GeoAlgorithm alg,

                                             final boolean bShowResultsDialog) {

      return m_PostProcessTaskFactory.getPostProcessTask(alg, bShowResultsDialog);

   }

   /**

    * Sets the current post process task factory

    * 

    * @param factory

    *                the new post-process task factory

    */

   public static void setPostProcessTaskFactory(final IPostProcessTaskFactory factory) {

      m_PostProcessTaskFactory = factory;

   }

   /** ******************************************* */

   /**

    * Adds an algorithm provider. This has to be done before calling initialize(), so the providers can be initialized as well.

    * 

    * @param provider

    *                the algorithm provider to add

    */

   public static void addAlgorithmProvider(final IAlgorithmProvider provider) {

      //providers are added at the beginning of the array, because models and scripts might depend on them

      m_AlgorithmProviders.add(0, provider);

   }

   /**

    * Checks if a portable directory exists and has the required access privileges.

    * Non-existing directories will be created if possible.

    * Displays a GUI warning message if there are problems, and exits with a corresponding error code. 

    * 

    * @param dir String with name of folder/directory to be checked. Use only a relative path here.

    * @param read_only set to "true" if only read access is required

    * @param provider name of the algorithm provider for which this folder is being checked.

    * @return "0" if all is OK, "1" if directory does not exist and could not be created, "2" if access is forbidden, "3" if a _file_ with that name already exists

    */

   public static int checkDir ( String dir, boolean read_only, String provider ) {

          final File f = new File ( SextanteGUI.getSextantePath() + File.separator + dir ); 

          if ( f.exists() ) {

                  if ( f.isFile() ) {

                          JOptionPane.showMessageDialog(null, 

                                          Sextante.getText("portable_dir_error") + " " + f.getAbsolutePath() + ".\n" + 

                                          Sextante.getText("portable_dir_is_file") + "\n" +

                                          Sextante.getText("portable_provider_not_usable") + " <html></i>" + provider + "+</i>+</html>."

                                          , "Inane warning", JOptionPane.WARNING_MESSAGE);

                          return ( 3 );

                  }

                  if ( read_only ) {

                          if ( f.canRead() ) {

                                  return ( 0 );

                          }                                  

                  }

                  if ( f.canWrite() ) {

                          return ( 0 );

                  }

                  if ( read_only ) {

                          JOptionPane.showMessageDialog(null, 

                                          Sextante.getText("portable_dir_error") + " " + f.getAbsolutePath() +

                                          Sextante.getText("portable_dir_error_ro") + "\n" + ":" +

                                          Sextante.getText("portable_dir_no_access") + "\n" +

                                          Sextante.getText("portable_provider_not_usable") + " <html></i>" + provider + "+</i>+</html>."

                                          , "Inane warning", JOptionPane.WARNING_MESSAGE);

                  } else {

                          JOptionPane.showMessageDialog(null, 

                                          Sextante.getText("portable_dir_error") + " " + f.getAbsolutePath() +

                                          Sextante.getText("portable_dir_error_rw") + "\n" + ":" +

                                          Sextante.getText("portable_dir_no_access") + "\n" +

                                          Sextante.getText("portable_provider_not_usable") + " <html></i>" + provider + "+</i>+</html>."

                                          , "Inane warning", JOptionPane.WARNING_MESSAGE);                          

                  }

                  return ( 2 );                  

          }

          /* directory does not exist: attempt to create it */

          if ( f.mkdir() == false ) {

                  JOptionPane.showMessageDialog(null, 

                                  Sextante.getText("portable_dir_error") + " " + f.getAbsolutePath() + ".\n" + 

                                  Sextante.getText("portable_dir_no_create") + "\n" +

                                  Sextante.getText("portable_provider_not_usable") + " <html></i>" + provider + "+</i>+</html>."

                                  , "Inane warning", JOptionPane.WARNING_MESSAGE);                  

                  return ( 1 );

          }

          return ( 0 );

   }

   /**

    * Checks if a file exists in one of the portable folders, and if it has the required access privileges.

    * Displays a GUI warning message if there are problems, and exits with a corresponding error code. 

    * 

    * @param file String with name of file to be checked. Use only a relative path here.

    * @param read_only set to "true" if only read access is required

    * @param provider name of the algorithm provider for which this file is being checked.

    * @return "0" if all is OK, "1" if file does not exist, "2" if access is forbidden, "3" if a _directory_ with that name already exists

    */

   public static int checkFile ( String file, boolean read_only, String provider ) {

          final File f = new File ( SextanteGUI.getSextantePath() + File.separator + file ); 

          if ( f.exists() ) {

                  if ( f.isDirectory() ) {

                          JOptionPane.showMessageDialog(null, 

                                          Sextante.getText("portable_file_error") + " " + f.getAbsolutePath() + ".\n" + 

                                          Sextante.getText("portable_file_is_dir") + "\n" +

                                          Sextante.getText("portable_provider_not_usable") + " <html></i>" + provider + "+</i>+</html>."

                                          , "Inane warning", JOptionPane.WARNING_MESSAGE);

                          return ( 3 );

                  }

                  if ( read_only ) {

                          if ( f.canRead() ) {

                                  return ( 0 );

                          }                                  

                  }

                  if ( f.canWrite() ) {

                          return ( 0 );

                  }

                  if ( read_only ) {

                          JOptionPane.showMessageDialog(null, 

                                          Sextante.getText("portable_file_error") + " " + f.getAbsolutePath() +

                                          Sextante.getText("portable_file_error_ro") + "\n" + ":" +

                                          Sextante.getText("portable_file_no_access") + "\n" +

                                          Sextante.getText("portable_provider_not_usable") + " <html></i>" + provider + "+</i>+</html>."

                                          , "Inane warning", JOptionPane.WARNING_MESSAGE);

                  } else {

                          JOptionPane.showMessageDialog(null, 

                                          Sextante.getText("portable_file_error") + " " + f.getAbsolutePath() +

                                          Sextante.getText("portable_file_error_rw") + "\n" + ":" +

                                          Sextante.getText("portable_file_no_access") + "\n" +

                                          Sextante.getText("portable_provider_not_usable") + " <html></i>" + provider + "+</i>+</html>."

                                          , "Inane warning", JOptionPane.WARNING_MESSAGE);                          

                  }

                  return ( 2 );                  

          }

          return ( 1 );

   }   

   /**

    * Portable SEXTANTE requires that external providers' (e.g. GRASS) algorithms

    * and user-editable scripts are stored in folders within the SEXTANTE extension

    * folder. In some case, read access to these folders is fine, in others r/w is required.

    * This method checks whether an algorithm provider has been set to be portable and

    * if so, it makes sure that the required folder(s) is/are present with the required

    * access rights. It will attempt to create any missing folders and will display a

    * warning if anythign goes wrong.

    */

   public static void checkPortableFolders () {

           String sPath;

           int result;

           sPath = new String ("");

           if ( Boolean.parseBoolean(SextanteGUI.getSettingParameterValue(SextanteRSettings.R_PORTABLE)) == true ) {

                   /* set R binaries folder */

                   result = checkDir ( Sextante.PORTABLE_R_FOLDER, true, "R" );

                   sPath = SextanteGUI.getSextantePath() + File.separator + Sextante.PORTABLE_R_FOLDER;             

                   SextanteGUI.setSettingParameterValue(SextanteRSettings.R_FOLDER, sPath);                   

                   /* set R user scripts folder */

                   result = checkDir ( Sextante.PORTABLE_R_SCRIPTS_FOLDER, false, "R user scripts" );

                   sPath = SextanteGUI.getSextantePath() + File.separator + Sextante.PORTABLE_R_SCRIPTS_FOLDER;

                   SextanteGUI.setSettingParameterValue(SextanteRSettings.R_SCRIPTS_FOLDER, sPath);

           }

           if ( Boolean.parseBoolean(SextanteGUI.getSettingParameterValue(SextanteGrassSettings.GRASS_PORTABLE)) == true ) {

                   /* set GRASS binaries folder */

                   result = checkDir ( Sextante.PORTABLE_GRASS_FOLDER, true, "GRASS GIS" );

                   sPath = SextanteGUI.getSextantePath() + File.separator + Sextante.PORTABLE_GRASS_FOLDER;             

                   SextanteGUI.setSettingParameterValue(SextanteGrassSettings.GRASS_FOLDER, sPath);

                   /* set GRASS shell support (MSYS) binaries folder (Windows only) */

                   if ( Sextante.isWindows() ) {

                           result = checkFile ( Sextante.PORTABLE_MSYS_FILE, true, "GRASS GIS shell scripts" );

                           sPath = SextanteGUI.getSextantePath() + File.separator + Sextante.PORTABLE_MSYS_FILE;             

                           SextanteGUI.setSettingParameterValue(SextanteGrassSettings.GRASS_WIN_SHELL, sPath);

                   }

           }

           if ( Boolean.parseBoolean(SextanteGUI.getSettingParameterValue(SextanteSagaSettings.SAGA_PORTABLE)) == true ) {

                   /* set SAGA binaries folder */

                   result = checkDir ( Sextante.PORTABLE_SAGA_FOLDER, true, "SAGA GIS" );

                   sPath = SextanteGUI.getSextantePath() + File.separator + Sextante.PORTABLE_SAGA_FOLDER;             

                   SextanteGUI.setSettingParameterValue(SextanteSagaSettings.SAGA_FOLDER, sPath);

           }

           if ( Boolean.parseBoolean(SextanteGUI.getSettingParameterValue(SextanteScriptsSettings.SCRIPTS_PORTABLE)) == true ) {

                   /* set user scripts folder */

                   result = checkDir ( Sextante.PORTABLE_SCRIPTS_FOLDER, true, "SEXTANTE user scripts" );

                   sPath = SextanteGUI.getSextantePath() + File.separator + Sextante.PORTABLE_SCRIPTS_FOLDER;             

                   SextanteGUI.setSettingParameterValue(SextanteScriptsSettings.SCRIPTS_FOLDER, sPath);

           }

           if ( Boolean.parseBoolean(SextanteGUI.getSettingParameterValue(SextanteModelerSettings.MODELS_PORTABLE)) == true ) {

                   /* set user models folder */

                   result = checkDir ( Sextante.PORTABLE_MODELS_FOLDER, true, "SEXTANTE user models" );

                   sPath = SextanteGUI.getSextantePath() + File.separator + Sextante.PORTABLE_MODELS_FOLDER;             

                   SextanteGUI.setSettingParameterValue(SextanteModelerSettings.MODELS_FOLDER, sPath);

           }           

   }

   /**

    * Initializes the GUI parameters and resources. It takes GUI resources (custom panels, etc.) from classpath jars. Should be

    * called before setting parameters using other methods from this class, except for the setSextantePath() and

    * setCustomDefaultSettings() methods.

    */

   public static void initialize() {

      GUIResources.addResourcesFromClasspath();

      _initialize();

   }

   /**

    * Initializes the GUI parameters and resources. It takes GUI resources (custom panels, etc.) from the specified urls. Should

    * be called before setting parameters using other methods from this class, except for the setSextantePath() method.

    * 

    * @param jars

    *                the urls of the jar files with custom GUI resources

    */

   public static void initialize(final URL[] jars) {

      GUIResources.addResourcesFromURLs(jars);

      _initialize();

   }

   /**

    * Initializes the GUI parameters and resources. It takes GUI resources (custom panels, etc.) from the specified folder. Should

    * be called before setting parameters using other methods from this class, except for the setSextantePath() method.

    * 

    * @param sFolder

    *                the folder with jars with custom GUI resources

    */

   public static void initialize(final String sFolder) {

      GUIResources.addResourcesFromFolder(sFolder);

      _initialize();

   }

   private static void _initialize() {

      setDefaultSettings();

      readConfigFile();

      checkPortableFolders();

      //this loads built-in SEXTANTE algorithms and resources

      loadResources();

      //and this loads additional algorithms from algorithm providers

      for (int i = 0; i < m_AlgorithmProviders.size(); i++) {

         final IAlgorithmProvider provider = m_AlgorithmProviders.get(i);

         provider.initialize();

         if (provider.getAlgorithms().size() > 0) {

            Sextante.addAlgorithmsFromProvider(provider.getName(), provider.getAlgorithms());

            addCustomModelerParametersPanel(provider.getCustomModelerParameterPanels());

            addCustomParametersPanel(provider.getCustomParameterPanels());

         }

      }

   }

   private static void setDefaultSettings() {

      final Setting[] baseSettings = new Setting[] { new SextanteGeneralSettings() };

      final ArrayList<IAlgorithmProvider> providers = SextanteGUI.getAlgorithmProviders();

      final Setting[] settings = new Setting[baseSettings.length + providers.size()];

      System.arraycopy(baseSettings, 0, settings, 0, baseSettings.length);

      for (int i = 0; i < providers.size(); i++) {

         settings[i + baseSettings.length] = providers.get(i).getSettings();

      }

      for (int i = 0; i < settings.length; i++) {

         final HashMap<String, String> map = settings[i].getInitValues();

         m_Settings.putAll(map);

      }

      if (m_DefaultSettings != null) {

         m_Settings.putAll(m_DefaultSettings);

      }

   }

   /**

    * This methods sets default setting values different from the hard-coded ones. It should be called right before initializing

    * this class

    * 

    * @param map

    *                the map with new default settings

    */

   public static void setCustomDefaultSettings(final HashMap<String, String> map) {

      m_DefaultSettings = map;

   }

   private static void loadResources() {

      final String[] sPanelClassName = GUIResources.getParameterPanelClassNames();

      for (final String element : sPanelClassName) {

         try {

            final Class panelClass = Class.forName(element);

            final String sAlgClassName = element.substring(0, element.indexOf("ParametersPanel")) + "Algorithm";

            final Class algClass = Class.forName(sAlgClassName);

            final GeoAlgorithm alg = (GeoAlgorithm) algClass.newInstance();

            m_ParametersPanel.put(alg.getCommandLineName(), panelClass);

         }

         catch (final Exception e) {/*ignore it if there are problems*/

         }

      }

      final String[] sModelerPanelClassName = GUIResources.getModelerParameterPanelClassNames();

      for (final String element : sModelerPanelClassName) {

         try {

            final Class panelClass = Class.forName(element);

            final String sAlgClassName = element.substring(0, element.indexOf("ModelerParametersPanel")) + "Algorithm";

            final Class algClass = Class.forName(sAlgClassName);

            final GeoAlgorithm alg = (GeoAlgorithm) algClass.newInstance();

            m_ModelerParametersPanel.put(alg.getCommandLineName(), panelClass);

         }

         catch (final Exception e) {/*ignore it if there are problems*/

         }

      }

   }

   /**

    * Returns the path to help files

    * 

    * @return the path to help files

    */

   public static String getHelpPath() {

      return m_sSextantePath + File.separator + "help";

   }

   /**

    * Sets the current path to sextante folder. This is the folder where help files and additional software should be located.

    * This should be done before initializing this class, since this folder is used by some algorithm providers

    * 

    * @param sPath

    *                the path to sextante help and additional programs

    */

   public static void setSextantePath(final String sPath) {

      m_sSextantePath = sPath;

   }

   /**

    * Returns the path to sextante help and additional programs

    * 

    * @return the path to sextante help and additional programs

    */

   public static String getSextantePath() {

      return m_sSextantePath;

   }

   /**

    * Returns the default folder for output data.

    * 

    * @return the default folder for output data.

    */

   public static String getOutputFolder() {

      if ((m_sOutputFolder == null) || m_sOutputFolder.trim().equals("")) {

         return System.getProperty("user.home");

      }

      else {

         return m_sOutputFolder;

      }

   }

   /**

    * Returns the default value to represent "No Data" (null) raster cells.

    * 

    * @return the current "No Data" value.

    */

   private static Double getDefaultNoDataValue() {

      try {

         final double dNoDataValue = Double.parseDouble(SextanteGUI.getSettingParameterValue(SextanteGeneralSettings.DEFAULT_NO_DATA_VALUE));

         return dNoDataValue;

      }

      catch (final Exception e) {

         return new Double(-99999d);

      }

   }

   /**

    * Loads configuration parameters from the config file

    */

   private static void readConfigFile() {

      BufferedReader input = null;

      try {

         input = new BufferedReader(new FileReader(getConfigFile()));

         String sLine = null;

         while ((sLine = input.readLine()) != null) {

            final String[] sTokens = sLine.split("=");

            if (sTokens.length == 2) {

               m_Settings.put(sTokens[0], sTokens[1]);

            }

         }

      }

      catch (final FileNotFoundException e) {

      }

      catch (final IOException e) {

      }

      finally {

         try {

            if (input != null) {

               input.close();

            }

         }

         catch (final IOException e) {

            Sextante.addErrorToLog(e);

         }

      }

   }

   /**

    * Saves current settings to the config file

    */

   public static void saveSettings() {

      Writer output = null;

      try {

         output = new BufferedWriter(new FileWriter(getConfigFile()));

         final Set<String> set = m_Settings.keySet();

         final Iterator<String> iter = set.iterator();

         while (iter.hasNext()) {

            final String sKey = iter.next();

            final String sValue = m_Settings.get(sKey);

            output.write(sKey + "=" + sValue + "\n");

         }

      }

      catch (final IOException e) {

         Sextante.addErrorToLog(e);

      }

      finally {

         if (output != null) {

            try {

               output.close();

            }

            catch (final IOException e) {

               Sextante.addErrorToLog(e);

            }

         }

      }

   }

   /**

    * Returns the path to the SEXTANTE config file.

    * 

    * @return A string with the full the path and name of the SEXTANTE config file.

    */

   private static String getConfigFile() {

      final String sPath = getUserFolder();

      return sPath + File.separator + "sextante.settings";

   }

   /**

    * Returns the folder in which the SEXTANTE config file is stored.

    * By default, this is the folder "sextante" in the user's home folder.

    * But it is also possible to set a different folder through the

    * Java property "SEXTANTE.confDir" when launching the VM:

    * 

    *   java -DSEXTANTE.confDir=<path>

    * 

    * @return A string with the full path and name of the config folder.

    */

   public static String getUserFolder() {

      String sPath;

      String sConfDir;

      // default is to use system's home folder setting

      sPath = System.getProperty("user.home") + File.separator + "sextante"; 

      // check if SEXTANTE.confDir has been set

      sConfDir = System.getProperty("SEXTANTE.confDir");            

      if ( sConfDir != null ) {

              sConfDir = sConfDir.trim();

                      if ( sConfDir.length() > 0 ) {

                              // check if we have to append a separator char

                              if ( sConfDir.endsWith(File.separator) ) {

                                      sPath = sConfDir;

                              } else {

                                      sPath = sConfDir + File.separator;

                                }

                        }

      }

      final File sextanteFolder = new File(sPath);

      if (!sextanteFolder.exists()) {

              sextanteFolder.mkdir();

      }

      return sPath;

   }

   /**

    * Returns the type of the last element from which a command-line command was executed

    * 

    * @return the type of the element from which a command-line command was executed. SextanteGUI.HISTORY if the last component

    *         was the history panel; SextanteGUI.COMMANDLINE if it was the regular SEXTANTE console

    */

   public static int getLastCommandOrigin() {

      return m_iLastCommandOrigin;

   }

   /**

    * Sets the type of the last element from which a command-line command was executed. This has to be called from any component

    * that allows execution of commands

    * 

    * @param iLast

    *                one of the following constants: SextanteGUI.HISTORY if the last component was the history panel;

    *                SextanteGUI.COMMANDLINE if it was the regular SEXTANTE console

    */

   public static void setLastCommandOrigin(final int iLast) {

      m_iLastCommandOrigin = iLast;

   }

   /**

    * Gets the dialog from which the last command--line command was executed. This will be used as the parent dialog for task

    * monitors or message dialogs generated by the execution of that command.

    * 

    * @return the dialog from which the last command--line command was executed

    */

   public static JDialog getLastCommandOriginParentDialog() {

      return m_LastCommandOriginParentPanel;

   }

   /**

    * Sets the dialog (if any) that contains the element from which the last command--line command was executed

    * 

    * @param parent

    *                the dialog (if any) that contains the element from which the last command--line command was executed

    */

   public static void setLastCommandOriginParentDialog(final JDialog parent) {

      m_LastCommandOriginParentPanel = parent;

   }

   /**

    * Returns true if only active algorithms (those that can be executed with the current data objects) should be shown in the

    * toolbox

    * 

    * @return true if only active algorithms (those that can be executed with the current data objects) should be shown in the

    *         toolbox

    */

   public static boolean getShowOnlyActiveAlgorithms() {

      return m_bShowOnlyActiveAlgorithms;

   }

   /**

    * Sets whether only active algorithms (those that can be executed with the current data objects) should be shown in the

    * toolbox

    * 

    * @param showOnlyActiveAlgorithms

    *                must be true if only active algorithms (those that can be executed with the current data objects) should be

    *                shown in the toolbox

    */

   public static void setShowOnlyActiveAlgorithms(final boolean showOnlyActiveAlgorithms) {

      m_bShowOnlyActiveAlgorithms = showOnlyActiveAlgorithms;

   }

   /**

    * puts a collection of settings into the settings map

    * 

    * @param settings

    *                the map with settings values.

    */

   public static void setSettings(final HashMap<String, String> settings) {

      m_Settings.putAll(settings);

   }

   /**

    * Modifies the passed string, so it can be used as a safe data object name (without special characters)

    * 

    * @param sName

    *                the name to modify

    * @return the modified safe name (with no special characters)

    */

   public static String modifyResultName(String sName) {

      sName = sName.replaceAll("\\.", "_");

      sName = sName.replaceAll(" ", "_");

      sName = sName.replaceAll("\\[", "_");

      sName = sName.replaceAll("\\]", "_");

      sName = sName.replaceAll("\\(", "_");

      sName = sName.replaceAll("\\)", "_");

      sName = sName.replaceAll("á", "a");

      sName = sName.replaceAll("é", "e");

      sName = sName.replaceAll("í", "i");

      sName = sName.replaceAll("ó", "o");

      sName = sName.replaceAll("ú", "u");

      sName = sName.replaceAll("ñ", "n");

      return sName;

   }

   private static void addCustomParametersPanel(final HashMap<String, Class> map) {

      m_ParametersPanel.putAll(map);

   }

   private static void addCustomModelerParametersPanel(final HashMap<String, Class> map) {

      m_ModelerParametersPanel.putAll(map);

   }

   public static Class getModelerParametersPanel(final String sName) {

      return m_ModelerParametersPanel.get(sName);

   }

   public static Class getParametersPanel(final String sName) {

      return m_ParametersPanel.get(sName);

   }

   public static ImageIcon getAlgorithmIcon(final GeoAlgorithm alg) {

      final String sName = Sextante.getAlgorithmProviderName(alg);

      for (int i = 0; i < m_AlgorithmProviders.size(); i++) {

         if (m_AlgorithmProviders.get(i).getName().equals(sName)) {

            return m_AlgorithmProviders.get(i).getIcon();

         }

      }

      return SEXTANTE_ICON;

   }

   public static ArrayList<IAlgorithmProvider> getAlgorithmProviders() {

      return m_AlgorithmProviders;

   }

   public static String getSettingParameterValue(final String sParameterName) {

      return m_Settings.get(sParameterName);

   }

   public static String setSettingParameterValue(final String sParameterName,

                                                 final String sValue) {

      return m_Settings.put(sParameterName, sValue);

   }

   public static void updateAlgorithmProvider(final Class providerClass) {

      for (int i = 0; i < m_AlgorithmProviders.size(); i++) {

         final IAlgorithmProvider provider = m_AlgorithmProviders.get(i);

         if (providerClass.isInstance(provider)) {

            provider.update();

            Sextante.addAlgorithmsFromProvider(provider.getName(), provider.getAlgorithms());

         }

      }

   }

   public static Object getAlgorithmHelp(final GeoAlgorithm alg) {

      final String sName = Sextante.getAlgorithmProviderName(alg);

      for (int i = 0; i < m_AlgorithmProviders.size(); i++) {

         if (m_AlgorithmProviders.get(i).getName().equals(sName)) {

            return m_AlgorithmProviders.get(i).getAlgorithmHelp(alg);

         }

      }

      String sFilename;

      String sPath;

      if (sName.equals("SEXTANTE")) {

         sFilename = alg.getCommandLineName() + ".xml";

         sPath = HelpIO.getHelpPath(alg, false);

         return HelpIO.getHelpAsHTMLCode(alg, sPath + File.separator + sFilename);

      }

      else {

         return ""; //TODO:create default help page

      }

   }

   public static String getAlgorithmHelpFilename(final GeoAlgorithm alg,

                                                 final boolean bForceCurrentLocale) {

      final String sName = Sextante.getAlgorithmProviderName(alg);

      for (int i = 0; i < m_AlgorithmProviders.size(); i++) {

         if (m_AlgorithmProviders.get(i).getName().equals(sName)) {

            return m_AlgorithmProviders.get(i).getAlgorithmHelpFilename(alg, bForceCurrentLocale);

         }

      }

      String sFilename;

      String sPath;

      if (sName.equals("SEXTANTE")) {

         sFilename = alg.getCommandLineName() + ".xml";

         sPath = HelpIO.getHelpPath(alg, false);

         return sPath + File.separator + sFilename;

      }

      else {

         return ""; //TODO:create default help page

      }

   }

   public static HashMap<NameAndIcon, ArrayList<ToolboxAction>> getToolboxActions() {

      final HashMap<NameAndIcon, ArrayList<ToolboxAction>> map = new HashMap<NameAndIcon, ArrayList<ToolboxAction>>();

      for (int i = 0; i < m_AlgorithmProviders.size(); i++) {

         final IAlgorithmProvider provider = m_AlgorithmProviders.get(i);

         map.putAll(provider.getToolboxActions());

      }

      map.putAll(SextanteGUI.getGUIFactory().getToolboxActions());

      return map;

   }

   public static IToolboxRightButtonAction[] getToolboxRightButtonActions() {

           final ArrayList<IToolboxRightButtonAction> list = new ArrayList<IToolboxRightButtonAction>();

           for (int i = 0; i < m_AlgorithmProviders.size(); i++) {

                   final IAlgorithmProvider provider = m_AlgorithmProviders.get(i);

                   final IToolboxRightButtonAction[] actions = provider.getToolboxRightButtonActions();

                   for (int j = 0; j < actions.length; j++) {

                           list.add(actions[j]);

                   }

           }

      return list.toArray(new IToolboxRightButtonAction[0]);

   }

   /**

    * Returns the renderer to use for layers created by SEXTANTE algorithms

    * 

    */

   public static IDataRenderer getDataRenderer() {

      return m_Renderer;

   }

   public static void setDataRenderer(final IDataRenderer renderer) {

      m_Renderer = renderer;

   }

}