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
  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                     isSelectionChanged = true;
  87                 } catch (IOException e1) {
  88                     MessagingUtils.messageDialog("Failed to write Config.ini", LanguageEditorPreferencePage.class,
  89                             "Language switch failed, because could not write to Folder. No writing permissions!", null);
  90                 }
  91             }
  92
  93             @Override
  94             public void widgetDefaultSelected(SelectionEvent e) {
  95                 // TODO Auto-generated method stub
  96
  97             }
  98         });
  99     }
 100
 101     /**
 102      * TODO: This method is not taking advantages of the enum field yet
 103      */
 104     private void restoreSavedSelection() {
 105         String rememberedValue = PreferencesUtil.getPreferenceStore().getString(IPreferenceKeys.DEFAULT_LANGUAGE_EDITOR);
 106         if(StringUtils.isNotEmpty(rememberedValue)&& StringUtils.isNotBlank(rememberedValue)){
 107             if(rememberedValue.equalsIgnoreCase("en")){ //$NON-NLS-1$
 108                 combo.select(1);
 109             }else if(rememberedValue.equalsIgnoreCase("de")){ //$NON-NLS-1$
 110                  combo.select(0);
 111             }
 112         }else{
 113             Locale locale = Locale.getDefault();
 114             if(locale.getLanguage().equals(new Locale("de").getLanguage())){
 115                 combo.select(0);
 116             }else if(locale.getLanguage().equals(new Locale("en").getLanguage())){
 117                 combo.select(1);
 118             }
 119         }
 120     }
 121
 122     private enum Language{
 123
 124         GERMAN("Deutsch"), ENGLISH("English"); //$NON-NLS-1$ //$NON-NLS-2$
 125         private final String label;
 126         private Language(String label){
 127             this.label = label;
 128         }
 129
 130         /**
 131          * @return the label
 132          */
 133         public String getLabel() {
 134             return label;
 135         }
 136     }
 137
 138         /* (non-Javadoc)
 139          * @see org.eclipse.ui.IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)
 140          */
 141         @Override
 142         public void init(IWorkbench workbench) {
 143                 setPreferenceStore(PreferencesUtil.getPreferenceStore());
 144         }
 145
 146         /* (non-Javadoc)
 147          * @see org.eclipse.jface.preference.PreferencePage#performOk()
 148          */
 149         @Override
 150         public boolean performOk() {
 151         try {
 152             if(isSelectionChanged){
 153                 preferencesUtil.writePropertyToConfigFile(combo.getSelectionIndex());
 154                 boolean result = MessageDialog.openConfirm(getShell(), Messages.LanguageEditorPreferencePage_PleaseRestart, Messages.LanguageEditorPreferencePage_EditorHasToRestart);
 155                 if(result){
 156                     //Press Ok
 157                     PlatformUI.getWorkbench().restart();
 158                 }
 159             }
 160         } catch (IOException e) {
 161             e.printStackTrace();
 162         }
 163                 return super.performOk();
 164         }
 165
 166 }