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.jface.preference.PreferencePage;
  18 import org.eclipse.swt.SWT;
  19 import org.eclipse.swt.custom.CCombo;
  20 import org.eclipse.swt.events.SelectionEvent;
  21 import org.eclipse.swt.events.SelectionListener;
  22 import org.eclipse.swt.layout.GridData;
  23 import org.eclipse.swt.layout.GridLayout;
  24 import org.eclipse.swt.widgets.Composite;
  25 import org.eclipse.swt.widgets.Control;
  26 import org.eclipse.swt.widgets.Label;
  27 import org.eclipse.ui.IWorkbench;
  28 import org.eclipse.ui.IWorkbenchPreferencePage;
  29 import org.eclipse.ui.PlatformUI;
  30
  31 import eu.etaxonomy.taxeditor.Messages;
  32 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  33
  34 /**
  35  * @author n.hoffmann
  36  * @created Dec 3, 2010
  37  * @version 1.0
  38  */
  39 public class LanguageEditorPreferencePage extends PreferencePage implements IWorkbenchPreferencePage{
  40
  41     private CCombo combo;
  42     PreferencesUtil preferencesUtil = new PreferencesUtil();
  43     private boolean isSelectionChanged = false;
  44     private int initalSelectionIndex;
  45
  46         /* (non-Javadoc)
  47          * @see org.eclipse.jface.preference.PreferencePage#createContents(org.eclipse.swt.widgets.Composite)
  48          */
  49         @Override
  50         protected Control createContents(Composite parent) {
  51                 Composite container = new Composite(parent, SWT.NULL);
  52                 final GridLayout gridLayout = new GridLayout();
  53                 container.setLayout(gridLayout);
  54                 createEditorDefaultLanguage(container);
  55                 return container;
  56         }
  57
  58         /**
  59      * @param container
  60      */
  61     private void createEditorDefaultLanguage(Composite container) {
  62         // TODO Auto-generated method stub
  63         final Label description = new Label(container, SWT.NONE);
  64         description.setText(Messages.LanguageEditorPreferencePage_RestartRequired);
  65
  66         final Label label = new Label(container, SWT.NONE);
  67         label.setText(Messages.LanguageEditorPreferencePage_ChooseDefaultLanguage);
  68
  69         GridData oneLine = new GridData();
  70         oneLine.grabExcessHorizontalSpace = true;
  71         oneLine.horizontalAlignment = GridData.FILL;
  72
  73         combo = new CCombo(container, SWT.NONE);
  74         combo.setLayoutData(oneLine);
  75
  76         combo.add(Language.GERMAN.getLabel(), 0);
  77         combo.add(Language.ENGLISH.getLabel(), 1);
  78         restoreSavedSelection();
  79
  80         combo.addSelectionListener(new SelectionListener() {
  81
  82             @Override
  83             public void widgetSelected(SelectionEvent e) {
  84                 try {
  85                     preferencesUtil.writePropertyToConfigFile(combo.getSelectionIndex());
  86                     if(initalSelectionIndex != combo.getSelectionIndex()) {
  87                         isSelectionChanged = true;
  88                     }else{
  89                         isSelectionChanged = false;
  90                     }
  91                 } catch (IOException e1) {
  92                     MessagingUtils.messageDialog("Failed to write Config.ini", LanguageEditorPreferencePage.class,
  93                             "Language switch failed, because could not write to Folder. No writing permissions!", null);
  94                 }
  95             }
  96
  97             @Override
  98             public void widgetDefaultSelected(SelectionEvent e) {
  99                 // TODO Auto-generated method stub
 100
 101             }
 102         });
 103     }
 104
 105     /**
 106      * TODO: This method is not taking advantages of the enum field yet
 107      */
 108     private void restoreSavedSelection() {
 109         String rememberedValue = PreferencesUtil.getPreferenceStore().getString(IPreferenceKeys.DEFAULT_LANGUAGE_EDITOR);
 110         if(StringUtils.isNotEmpty(rememberedValue)&& StringUtils.isNotBlank(rememberedValue)){
 111             if(rememberedValue.equalsIgnoreCase("en")){ //$NON-NLS-1$
 112                 initalSelectionIndex = 1;
 113                 combo.select(1);
 114             }else if(rememberedValue.equalsIgnoreCase("de")){ //$NON-NLS-1$
 115                 initalSelectionIndex = 0;
 116                 combo.select(0);
 117             }
 118         }else{
 119             Locale locale = Locale.getDefault();
 120             if(locale.getLanguage().equals(new Locale("de").getLanguage())){
 121                 initalSelectionIndex = 0;
 122                 combo.select(0);
 123             }else if(locale.getLanguage().equals(new Locale("en").getLanguage())){
 124                 initalSelectionIndex = 1;
 125                 combo.select(1);
 126             }
 127         }
 128     }
 129
 130     private enum Language{
 131
 132         GERMAN("Deutsch"), ENGLISH("English"); //$NON-NLS-1$ //$NON-NLS-2$
 133         private final String label;
 134         private Language(String label){
 135             this.label = label;
 136         }
 137
 138         /**
 139          * @return the label
 140          */
 141         public String getLabel() {
 142             return label;
 143         }
 144     }
 145
 146         /* (non-Javadoc)
 147          * @see org.eclipse.ui.IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)
 148          */
 149         @Override
 150         public void init(IWorkbench workbench) {
 151                 setPreferenceStore(PreferencesUtil.getPreferenceStore());
 152         }
 153
 154         /* (non-Javadoc)
 155          * @see org.eclipse.jface.preference.PreferencePage#performOk()
 156          */
 157         @Override
 158         public boolean performOk() {
 159         try {
 160             if(isSelectionChanged){
 161                 preferencesUtil.writePropertyToConfigFile(combo.getSelectionIndex());
 162                 boolean result = MessageDialog.openConfirm(getShell(), Messages.LanguageEditorPreferencePage_PleaseRestart, Messages.LanguageEditorPreferencePage_EditorHasToRestart);
 163                 if(result){
 164                     //Press Ok
 165                     PlatformUI.getWorkbench().restart();
 166                 }
 167             }
 168         } catch (IOException e) {
 169             e.printStackTrace();
 170         }
 171                 return super.performOk();
 172         }
 173
 174 }