eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/preference/LanguageEditorPreferencePage.java

   1 /**
   2 * Copyright (C) 2007 EDIT
   3 * European Distributed Institute of Taxonomy
   4 * http://www.e-taxonomy.eu
   5 *
   6 * The contents of this file are subject to the Mozilla Public License Version 1.1
   7 * See LICENSE.TXT at the top of this package for the full license terms.
   8 */
   9
  10 package eu.etaxonomy.taxeditor.preference;
  11
  12 import java.io.IOException;
  13 import java.util.Locale;
  14
  15 import org.apache.commons.lang.StringUtils;
  16 import org.eclipse.jface.dialogs.MessageDialog;
  17 import org.eclipse.swt.SWT;
  18 import org.eclipse.swt.custom.CCombo;
  19 import org.eclipse.swt.events.SelectionEvent;
  20 import org.eclipse.swt.events.SelectionListener;
  21 import org.eclipse.swt.layout.GridData;
  22 import org.eclipse.swt.layout.GridLayout;
  23 import org.eclipse.swt.widgets.Composite;
  24 import org.eclipse.swt.widgets.Control;
  25 import org.eclipse.swt.widgets.Label;
  26 import org.eclipse.ui.PlatformUI;
  27
  28 import eu.etaxonomy.taxeditor.l10n.Messages;
  29 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  30 import eu.etaxonomy.taxeditor.preference.menu.CdmPreferencePage;
  31
  32 /**
  33  * @author n.hoffmann
  34  * @created Dec 3, 2010
  35  * @version 1.0
  36  */
  37 public class LanguageEditorPreferencePage extends CdmPreferencePage {
  38
  39     private CCombo combo;
  40     PreferencesUtil preferencesUtil = new PreferencesUtil();
  41     private boolean isSelectionChanged = false;
  42     private int initalSelectionIndex;
  43
  44         @Override
  45         protected Control createContents(Composite parent) {
  46                 Composite container = new Composite(parent, SWT.NULL);
  47                 final GridLayout gridLayout = new GridLayout();
  48                 container.setLayout(gridLayout);
  49                 createEditorDefaultLanguage(container);
  50                 return container;
  51         }
  52
  53         /**
  54      * @param container
  55      */
  56     private void createEditorDefaultLanguage(Composite container) {
  57         // TODO Auto-generated method stub
  58         final Label description = new Label(container, SWT.NONE);
  59         description.setText(Messages.LanguageEditorPreferencePage_RestartRequired);
  60
  61         final Label label = new Label(container, SWT.NONE);
  62         label.setText(Messages.LanguageEditorPreferencePage_ChooseDefaultLanguage);
  63
  64         GridData oneLine = new GridData();
  65         oneLine.grabExcessHorizontalSpace = true;
  66         oneLine.horizontalAlignment = GridData.FILL;
  67
  68         combo = new CCombo(container, SWT.NONE);
  69         combo.setLayoutData(oneLine);
  70
  71         combo.add(Language.GERMAN.getLabel(), 0);
  72         combo.add(Language.ENGLISH.getLabel(), 1);
  73         restoreSavedSelection();
  74
  75         combo.addSelectionListener(new SelectionListener() {
  76
  77             @Override
  78             public void widgetSelected(SelectionEvent e) {
  79                 try {
  80                     preferencesUtil.writePropertyToConfigFile(combo.getSelectionIndex());
  81                     if(initalSelectionIndex != combo.getSelectionIndex()) {
  82                         isSelectionChanged = true;
  83                     }else{
  84                         isSelectionChanged = false;
  85                     }
  86                 } catch (IOException e1) {
  87                     MessagingUtils.messageDialog("Failed to write Config.ini", LanguageEditorPreferencePage.class,
  88                             "Language switch failed, because could not write to Folder. No writing permissions!", null);
  89                 }
  90             }
  91
  92             @Override
  93             public void widgetDefaultSelected(SelectionEvent e) {
  94                 // TODO Auto-generated method stub
  95
  96             }
  97         });
  98     }
  99
 100     /**
 101      * TODO: This method is not taking advantages of the enum field yet
 102      */
 103     private void restoreSavedSelection() {
 104         String rememberedValue = PreferencesUtil.getPreferenceStore().getString(IPreferenceKeys.DEFAULT_LANGUAGE_EDITOR);
 105         if(StringUtils.isNotEmpty(rememberedValue)&& StringUtils.isNotBlank(rememberedValue)){
 106             if(rememberedValue.equalsIgnoreCase("en")){ //$NON-NLS-1$
 107                 initalSelectionIndex = 1;
 108                 combo.select(1);
 109             }else if(rememberedValue.equalsIgnoreCase("de")){ //$NON-NLS-1$
 110                 initalSelectionIndex = 0;
 111                 combo.select(0);
 112             }
 113         }else{
 114             Locale locale = Locale.getDefault();
 115             if(locale.getLanguage().equals(new Locale("de").getLanguage())){
 116                 initalSelectionIndex = 0;
 117                 combo.select(0);
 118             }else if(locale.getLanguage().equals(new Locale("en").getLanguage())){
 119                 initalSelectionIndex = 1;
 120                 combo.select(1);
 121             }
 122         }
 123     }
 124
 125     private enum Language{
 126
 127         GERMAN("Deutsch"), ENGLISH("English"); //$NON-NLS-1$ //$NON-NLS-2$
 128         private final String label;
 129         private Language(String label){
 130             this.label = label;
 131         }
 132
 133         /**
 134          * @return the label
 135          */
 136         public String getLabel() {
 137             return label;
 138         }
 139     }
 140
 141         @Override
 142         public boolean performOk() {
 143         try {
 144             if(isSelectionChanged){
 145                 preferencesUtil.writePropertyToConfigFile(combo.getSelectionIndex());
 146                 boolean result = MessageDialog.openConfirm(getShell(), Messages.LanguageEditorPreferencePage_PleaseRestart, Messages.LanguageEditorPreferencePage_EditorHasToRestart);
 147                 if(result){
 148                     //Press Ok
 149                     PlatformUI.getWorkbench().restart();
 150                 }
 151             }
 152         } catch (IOException e) {
 153             e.printStackTrace();
 154         }
 155                 return super.performOk();
 156         }
 157
 158 }