eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/preference/DefaultLanguageEditorPreferencePage.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.File;
  14 import java.io.FileInputStream;
  15 import java.io.FileOutputStream;
  16 import java.io.IOException;
  17 import java.util.Properties;
  18
  19 import org.apache.commons.lang.StringUtils;
  20 import org.eclipse.jface.preference.PreferencePage;
  21 import org.eclipse.swt.SWT;
  22 import org.eclipse.swt.custom.CCombo;
  23 import org.eclipse.swt.events.SelectionEvent;
  24 import org.eclipse.swt.events.SelectionListener;
  25 import org.eclipse.swt.layout.GridData;
  26 import org.eclipse.swt.layout.GridLayout;
  27 import org.eclipse.swt.layout.RowLayout;
  28 import org.eclipse.swt.widgets.Composite;
  29 import org.eclipse.swt.widgets.Control;
  30 import org.eclipse.swt.widgets.Label;
  31 import org.eclipse.ui.IWorkbench;
  32 import org.eclipse.ui.IWorkbenchPreferencePage;
  33
  34 /**
  35  * @author n.hoffmann
  36  * @created Dec 3, 2010
  37  * @version 1.0
  38  */
  39 public class DefaultLanguageEditorPreferencePage extends PreferencePage implements IWorkbenchPreferencePage{
  40
  41     private CCombo combo;
  42
  43         private Composite createComposite(Composite parent){
  44                 Composite composite = new Composite(parent, SWT.NULL);
  45                 composite.setLayoutData(new GridData(SWT.FILL, SWT.TOP, true, false, 2, 1));
  46                 composite.setLayout(new RowLayout(SWT.HORIZONTAL));
  47                 return composite;
  48         }
  49
  50         /* (non-Javadoc)
  51          * @see org.eclipse.jface.preference.PreferencePage#createContents(org.eclipse.swt.widgets.Composite)
  52          */
  53         @Override
  54         protected Control createContents(Composite parent) {
  55                 Composite container = new Composite(parent, SWT.NULL);
  56                 final GridLayout gridLayout = new GridLayout();
  57                 container.setLayout(gridLayout);
  58                 createEditorDefaultLanguage(container);
  59                 return container;
  60         }
  61
  62         /**
  63      * @param container
  64      */
  65     private void createEditorDefaultLanguage(Composite container) {
  66         // TODO Auto-generated method stub
  67         final Label label = new Label(container, SWT.NONE);
  68         label.setText("Please choose your default language: ");
  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                     writeConfigAndRestart(combo.getSelectionIndex());
  87                 } catch (IOException e1) {
  88                     e1.printStackTrace();
  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")){
 107                 combo.select(1);
 108             }else if(rememberedValue.equalsIgnoreCase("de")){
 109                  combo.select(0);
 110             }
 111         }
 112     }
 113
 114     private enum Language{
 115
 116         GERMAN("Deutsch"), ENGLISH("English");
 117         private final String label;
 118         private Language(String label){
 119             this.label = label;
 120         }
 121
 122         /**
 123          * @return the label
 124          */
 125         public String getLabel() {
 126             return label;
 127         }
 128     }
 129
 130     private void writeConfigAndRestart(int setLanguage) throws IOException {
 131         File file = org.eclipse.core.runtime.preferences.ConfigurationScope.INSTANCE.getLocation().toFile();
 132         Properties properties = load(file.getAbsolutePath()+"/config.ini");
 133         switch(setLanguage){
 134         case 0:
 135             properties.setProperty("osgi.nl", "de");
 136             PreferencesUtil.getPreferenceStore().setValue(IPreferenceKeys.DEFAULT_LANGUAGE_EDITOR, "de");
 137             break;
 138         case 1:
 139             properties.setProperty("osgi.nl", "en");
 140             PreferencesUtil.getPreferenceStore().setValue(IPreferenceKeys.DEFAULT_LANGUAGE_EDITOR, "en");
 141             break;
 142         default:
 143             break;
 144         }
 145         save(file+"/config.ini", properties);
 146     }
 147
 148     private Properties load(String filename) throws IOException {
 149         FileInputStream in = new FileInputStream(filename);
 150         Properties prop = new Properties();
 151         prop.load(in);
 152         in.close();
 153         return prop;
 154     }
 155
 156     private void save(String filename, Properties properties) throws IOException{
 157         FileOutputStream fos =  new FileOutputStream(filename);
 158         properties.store(fos, "");
 159         fos.close();
 160     }
 161
 162         /* (non-Javadoc)
 163          * @see org.eclipse.ui.IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)
 164          */
 165         @Override
 166         public void init(IWorkbench workbench) {
 167                 setPreferenceStore(PreferencesUtil.getPreferenceStore());
 168         }
 169
 170         /* (non-Javadoc)
 171          * @see org.eclipse.jface.preference.PreferencePage#performOk()
 172          */
 173         @Override
 174         public boolean performOk() {
 175         try {
 176             writeConfigAndRestart(combo.getSelectionIndex());
 177         } catch (IOException e) {
 178             e.printStackTrace();
 179         }
 180                 return super.performOk();
 181         }
 182 }