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
  12 import org.eclipse.core.runtime.CoreException;
  13 import org.eclipse.core.runtime.IPath;
  14 import org.eclipse.jface.dialogs.ErrorDialog;
  15
  16 /**
  17  * <code>Templates</code> gives access to the available templates.
  18  */
  19 public class Templates extends TemplateSet {
  20
  21         private static final String DEFAULT_FILE= "default-templates.xml"; //$NON-NLS-1$
  22         private static final String TEMPLATE_FILE= "templates.xml"; //$NON-NLS-1$
  23
  24         /** Singleton. */
  25         private static Templates fgTemplates;
  26
  27         /**
  28          * Returns an instance of templates.
  29          */
  30         public static Templates getInstance() {
  31                 if (fgTemplates == null)
  32                         fgTemplates= create();
  33
  34                 return fgTemplates;
  35         }
  36
  37         private static Templates create() {
  38                 Templates templates= new Templates();
  39
  40                 try {
  41                         File templateFile= getTemplateFile();
  42                         if (templateFile.exists()) {
  43                                 templates.addFromFile(templateFile);
  44                         } else {
  45                                 templates.addFromStream(getDefaultsAsStream());
  46                                 templates.saveToFile(templateFile);
  47                         }
  48
  49                 } catch (CoreException e) {
  50                         PHPeclipsePlugin.log(e);
  51                         ErrorDialog.openError(null,
  52                                 TemplateMessages.getString("Templates.error.title"), //$NON-NLS-1$
  53                                 e.getMessage(), e.getStatus());
  54
  55                         templates.clear();
  56                 }
  57
  58                 return templates;
  59         }
  60
  61         /**
  62          * Resets the template set.
  63          */
  64         public void reset() throws CoreException {
  65                 clear();
  66                 addFromFile(getTemplateFile());
  67         }
  68
  69         /**
  70          * Resets the template set with the default templates.
  71          */
  72         public void restoreDefaults() throws CoreException {
  73                 clear();
  74                 addFromStream(getDefaultsAsStream());
  75         }
  76
  77         /**
  78          * Saves the template set.
  79          */
  80         public void save() throws CoreException {
  81                 saveToFile(getTemplateFile());
  82         }
  83
  84         private static InputStream getDefaultsAsStream() {
  85                 return Templates.class.getResourceAsStream(DEFAULT_FILE);
  86         }
  87
  88         private static File getTemplateFile() {
  89                 IPath path= PHPeclipsePlugin.getDefault().getStateLocation();
  90                 path= path.append(TEMPLATE_FILE);
  91
  92                 return path.toFile();
  93         }
  94 }
  95