net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/corext/template/Templates.java

   1 /*
   2  * (c) Copyright IBM Corp. 2000, 2001.
   3  * All Rights Reserved.
   4  */
   5 package net.sourceforge.phpdt.internal.corext.template;
   6
   7 import java.io.File;
   8 import java.io.InputStream;
   9
  10 import net.sourceforge.phpeclipse.PHPeclipsePlugin;
  11 import org.eclipse.core.runtime.CoreException;
  12 import org.eclipse.core.runtime.IPath;
  13 import org.eclipse.jface.dialogs.ErrorDialog;
  14
  15 /**
  16  * <code>Templates</code> gives access to the available templates.
  17  */
  18 public class Templates extends TemplateSet {
  19
  20         private static final String DEFAULT_FILE= "default-templates.xml"; //$NON-NLS-1$
  21         private static final String TEMPLATE_FILE= "templates.xml"; //$NON-NLS-1$
  22
  23         /** Singleton. */
  24         private static Templates fgTemplates;
  25
  26         /**
  27          * Returns an instance of templates.
  28          */
  29         public static Templates getInstance() {
  30                 if (fgTemplates == null)
  31                         fgTemplates= create();
  32
  33                 return fgTemplates;
  34         }
  35
  36         private static Templates create() {
  37                 Templates templates= new Templates();
  38
  39                 try {
  40                         File templateFile= getTemplateFile();
  41                         if (templateFile.exists()) {
  42                                 templates.addFromFile(templateFile);
  43                         } else {
  44                                 templates.addFromStream(getDefaultsAsStream());
  45                                 templates.saveToFile(templateFile);
  46                         }
  47
  48                 } catch (CoreException e) {
  49                         PHPeclipsePlugin.log(e);
  50                         ErrorDialog.openError(null,
  51                                 TemplateMessages.getString("Templates.error.title"), //$NON-NLS-1$
  52                                 e.getMessage(), e.getStatus());
  53
  54                         templates.clear();
  55                 }
  56
  57                 return templates;
  58         }
  59
  60         /**
  61          * Resets the template set.
  62          */
  63         public void reset() throws CoreException {
  64                 clear();
  65                 addFromFile(getTemplateFile());
  66         }
  67
  68         /**
  69          * Resets the template set with the default templates.
  70          */
  71         public void restoreDefaults() throws CoreException {
  72                 clear();
  73                 addFromStream(getDefaultsAsStream());
  74         }
  75
  76         /**
  77          * Saves the template set.
  78          */
  79         public void save() throws CoreException {
  80                 saveToFile(getTemplateFile());
  81         }
  82
  83         private static InputStream getDefaultsAsStream() {
  84                 return Templates.class.getResourceAsStream(DEFAULT_FILE);
  85         }
  86
  87         private static File getTemplateFile() {
  88                 IPath path= PHPeclipsePlugin.getDefault().getStateLocation();
  89                 path= path.append(TEMPLATE_FILE);
  90
  91                 return path.toFile();
  92         }
  93 }
  94