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

   1 // $Id$
   2 /**
   3 * Copyright (C) 2007 EDIT
   4 * European Distributed Institute of Taxonomy
   5 * http://www.e-taxonomy.eu
   6 *
   7 * The contents of this file are subject to the Mozilla Public License Version 1.1
   8 * See LICENSE.TXT at the top of this package for the full license terms.
   9 */
  10
  11 package eu.etaxonomy.taxeditor.preference;
  12
  13 import java.io.IOException;
  14 import java.util.Locale;
  15
  16 import org.apache.commons.lang.StringUtils;
  17 import org.eclipse.jface.dialogs.MessageDialog;
  18 import org.eclipse.jface.preference.PreferencePage;
  19 import org.eclipse.swt.SWT;
  20 import org.eclipse.swt.custom.CCombo;
  21 import org.eclipse.swt.events.SelectionEvent;
  22 import org.eclipse.swt.events.SelectionListener;
  23 import org.eclipse.swt.layout.GridData;
  24 import org.eclipse.swt.layout.GridLayout;
  25 import org.eclipse.swt.widgets.Composite;
  26 import org.eclipse.swt.widgets.Control;
  27 import org.eclipse.swt.widgets.Label;
  28 import org.eclipse.ui.IWorkbench;
  29 import org.eclipse.ui.IWorkbenchPreferencePage;
  30 import org.eclipse.ui.PlatformUI;
  31
  32 import eu.etaxonomy.taxeditor.Messages;
  33 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  34
  35 /**
  36  * @author n.hoffmann
  37  * @created Dec 3, 2010
  38  * @version 1.0
  39  */
  40 public class LanguageEditorPreferencePage extends PreferencePage implements IWorkbenchPreferencePage{
  41
  42     private CCombo combo;
  43     PreferencesUtil preferencesUtil = new PreferencesUtil();
  44     private boolean isSelectionChanged = false;
  45     private int initalSelectionIndex;
  46
  47         /* (non-Javadoc)
  48          * @see org.eclipse.jface.preference.PreferencePage#createContents(org.eclipse.swt.widgets.Composite)
  49          */
  50         @Override
  51         protected Control createContents(Composite parent) {
  52                 Composite container = new Composite(parent, SWT.NULL);
  53                 final GridLayout gridLayout = new GridLayout();
  54                 container.setLayout(gridLayout);
  55                 createEditorDefaultLanguage(container);
  56                 return container;
  57         }
  58
  59         /**
  60      * @param container
  61      */
  62     private void createEditorDefaultLanguage(Composite container) {
  63         // TODO Auto-generated method stub
  64         final Label description = new Label(container, SWT.NONE);
  65         description.setText(Messages.LanguageEditorPreferencePage_RestartRequired);
  66
  67         final Label label = new Label(container, SWT.NONE);
  68         label.setText(Messages.LanguageEditorPreferencePage_ChooseDefaultLanguage);
  69
  70         GridData oneLine = new GridData();
  71         oneLine.grabExcessHorizontalSpace = true;
  72         oneLine.horizontalAlignment = GridData.FILL;
  73
  74         combo = new CCombo(container, SWT.NONE);
  75         combo.setLayoutData(oneLine);
  76
  77         combo.add(Language.GERMAN.getLabel(), 0);
  78         combo.add(Language.ENGLISH.getLabel(), 1);
  79         restoreSavedSelection();
  80
  81         combo.addSelectionListener(new SelectionListener() {
  82
  83             @Override
  84             public void widgetSelected(SelectionEvent e) {
  85                 try {
  86                     preferencesUtil.writePropertyToConfigFile(combo.getSelectionIndex());
  87                     if(initalSelectionIndex != combo.getSelectionIndex()) {
  88                         isSelectionChanged = true;
  89                     }else{
  90                         isSelectionChanged = false;
  91                     }
  92                 } catch (IOException e1) {
  93                     MessagingUtils.messageDialog("Failed to write Config.ini", LanguageEditorPreferencePage.class,
  94                             "Language switch failed, because could not write to Folder. No writing permissions!", null);
  95                 }
  96             }
  97
  98             @Override
  99             public void widgetDefaultSelected(SelectionEvent e) {
 100                 // TODO Auto-generated method stub
 101
 102             }
 103         });
 104     }
 105
 106     /**
 107      * TODO: This method is not taking advantages of the enum field yet
 108      */
 109     private void restoreSavedSelection() {
 110         String rememberedValue = PreferencesUtil.getPreferenceStore().getString(IPreferenceKeys.DEFAULT_LANGUAGE_EDITOR);
 111         if(StringUtils.isNotEmpty(rememberedValue)&& StringUtils.isNotBlank(rememberedValue)){
 112             if(rememberedValue.equalsIgnoreCase("en")){ //$NON-NLS-1$
 113                 initalSelectionIndex = 1;
 114                 combo.select(1);
 115             }else if(rememberedValue.equalsIgnoreCase("de")){ //$NON-NLS-1$
 116                 initalSelectionIndex = 0;
 117                 combo.select(0);
 118             }
 119         }else{
 120             Locale locale = Locale.getDefault();
 121             if(locale.getLanguage().equals(new Locale("de").getLanguage())){
 122                 initalSelectionIndex = 0;
 123                 combo.select(0);
 124             }else if(locale.getLanguage().equals(new Locale("en").getLanguage())){
 125                 initalSelectionIndex = 1;
 126                 combo.select(1);
 127             }
 128         }
 129     }
 130
 131     private enum Language{
 132
 133         GERMAN("Deutsch"), ENGLISH("English"); //$NON-NLS-1$ //$NON-NLS-2$
 134         private final String label;
 135         private Language(String label){
 136             this.label = label;
 137         }
 138
 139         /**
 140          * @return the label
 141          */
 142         public String getLabel() {
 143             return label;
 144         }
 145     }
 146
 147         /* (non-Javadoc)
 148          * @see org.eclipse.ui.IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)
 149          */
 150         @Override
 151         public void init(IWorkbench workbench) {
 152                 setPreferenceStore(PreferencesUtil.getPreferenceStore());
 153         }
 154
 155         /* (non-Javadoc)
 156          * @see org.eclipse.jface.preference.PreferencePage#performOk()
 157          */
 158         @Override
 159         public boolean performOk() {
 160         try {
 161             if(isSelectionChanged){
 162                 preferencesUtil.writePropertyToConfigFile(combo.getSelectionIndex());
 163                 boolean result = MessageDialog.openConfirm(getShell(), Messages.LanguageEditorPreferencePage_PleaseRestart, Messages.LanguageEditorPreferencePage_EditorHasToRestart);
 164                 if(result){
 165                     //Press Ok
 166                     PlatformUI.getWorkbench().restart();
 167                 }
 168             }
 169         } catch (IOException e) {
 170             e.printStackTrace();
 171         }
 172                 return super.performOk();
 173         }
 174
 175 }