eclipseprojects/eu.etaxonomy.taxeditor/src/eu/etaxonomy/taxeditor/editor/description/LanguageDialog.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.editor.description;
  12
  13 import java.util.ArrayList;
  14 import java.util.List;
  15
  16 import org.apache.log4j.Logger;
  17 import org.eclipse.jface.dialogs.Dialog;
  18 import org.eclipse.jface.dialogs.IDialogConstants;
  19 import org.eclipse.jface.dialogs.InputDialog;
  20 import org.eclipse.jface.window.Window;
  21 import org.eclipse.swt.SWT;
  22 import org.eclipse.swt.custom.CCombo;
  23 import org.eclipse.swt.events.SelectionAdapter;
  24 import org.eclipse.swt.events.SelectionEvent;
  25 import org.eclipse.swt.layout.GridData;
  26 import org.eclipse.swt.layout.GridLayout;
  27 import org.eclipse.swt.widgets.Composite;
  28 import org.eclipse.swt.widgets.Control;
  29 import org.eclipse.swt.widgets.Label;
  30 import org.eclipse.swt.widgets.Shell;
  31
  32 import eu.etaxonomy.cdm.model.common.Language;
  33 import eu.etaxonomy.taxeditor.controller.GlobalController;
  34 import eu.etaxonomy.taxeditor.model.CdmSessionDataRepository;
  35 import eu.etaxonomy.taxeditor.model.LanguageUtil;
  36
  37 /**
  38  * @author p.ciardelli
  39  * @created 02.04.2009
  40  * @version 1.0
  41  */
  42 public class LanguageDialog extends InputDialog {
  43         private static final Logger logger = Logger.getLogger(LanguageDialog.class);
  44
  45         private String message;
  46
  47         private Language language;
  48         protected Language languageTemp;
  49
  50         /**
  51          * Language selected last time the dialog was used.
  52          */
  53         private static Language lastLanguage;
  54
  55         private CCombo combo;
  56
  57         private List<Language> languages;
  58
  59
  60         /**
  61          * @param shell
  62          * @param dialogTitle
  63          * @param dialogMessage
  64          */
  65         public LanguageDialog(Shell shell, String dialogTitle, String dialogMessage) {
  66                 super(shell, dialogTitle,
  67                                 dialogMessage, null, null);
  68
  69                 message = dialogMessage;
  70
  71                 // Set selection menu to language chosen last time Dialog was opened
  72                 if (lastLanguage != null)  {
  73                         language = lastLanguage;
  74                 }
  75         }
  76
  77         /**
  78          * Lifted from Dialog.
  79          *
  80          * @param parent
  81          * @return
  82          * @see Dialog
  83          */
  84         protected Control createDialogComposite(Composite parent) {
  85                 // create a composite with standard margins and spacing
  86                 Composite composite = new Composite(parent, SWT.NONE);
  87                 GridLayout layout = new GridLayout();
  88                 layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
  89                 layout.marginWidth = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN);
  90                 layout.verticalSpacing = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING);
  91                 layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
  92                 composite.setLayout(layout);
  93                 composite.setLayoutData(new GridData(GridData.FILL_BOTH));
  94                 applyDialogFont(composite);
  95                 return composite;
  96         }
  97
  98     /*
  99      * (non-Javadoc) Method declared on Dialog.
 100      */
 101     protected Control createDialogArea(Composite parent) {
 102         // create composite
 103         Composite composite = (Composite) createDialogComposite(parent);
 104         // create message
 105         if (message != null) {
 106             Label label = new Label(composite, SWT.WRAP);
 107             label.setText(message);
 108             GridData data = new GridData(GridData.GRAB_HORIZONTAL
 109                     | GridData.GRAB_VERTICAL | GridData.HORIZONTAL_ALIGN_FILL
 110                     | GridData.VERTICAL_ALIGN_CENTER);
 111             data.widthHint = convertHorizontalDLUsToPixels(IDialogConstants.MINIMUM_MESSAGE_AREA_WIDTH);
 112             label.setLayoutData(data);
 113             label.setFont(parent.getFont());
 114         }
 115         // create combo
 116         combo = new CCombo(composite, SWT.BORDER);
 117         combo.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL
 118                 | GridData.HORIZONTAL_ALIGN_FILL));
 119         combo.addSelectionListener(new SelectionAdapter() {
 120                         @Override
 121                         public void widgetSelected(SelectionEvent e) {
 122                                 int i = combo.getSelectionIndex();
 123                                 languageTemp = languages.get(i);
 124                         }
 125                 });
 126
 127         populateLanguages();
 128
 129         applyDialogFont(composite);
 130         return composite;
 131     }
 132
 133         /**
 134          *
 135          */
 136         private void populateLanguages() {
 137                 languages = new ArrayList<Language>();
 138                 int i = 0;
 139                 int index = 0;
 140                 for (Language language : CdmSessionDataRepository.getDefault().getLanguages()) {
 141
 142                         combo.add(LanguageUtil.getDescription(language));
 143                         languages.add(language);
 144
 145                         if (this.language != null && this.language.equals(language)) {
 146                                 index = i;
 147                         }
 148                         i++;
 149                 }
 150                 combo.select(index);
 151         }
 152
 153         /**
 154          * @return
 155          */
 156         private Language getLanguage() {
 157                 return language;
 158         }
 159
 160         /**
 161          * @param dialogTitle
 162          * @param dialogMessage
 163          * @return
 164          */
 165         public static Language getLanguage(String dialogTitle,
 166                         String dialogMessage) {
 167                 LanguageDialog dialog = new LanguageDialog(GlobalController.getShell(),
 168                                 dialogTitle,
 169                                 dialogMessage);
 170                 if (dialog.open() == Window.CANCEL) {
 171                         return null;
 172                 }
 173                 return dialog.getLanguage();
 174         }
 175
 176         protected void createButtonsForButtonBar(Composite parent) {
 177                 createButton(parent, IDialogConstants.OK_ID,
 178                 IDialogConstants.OK_LABEL, true);
 179         createButton(parent, IDialogConstants.CANCEL_ID,
 180                 IDialogConstants.CANCEL_LABEL, false);
 181     }
 182
 183         protected void buttonPressed(int buttonId) {
 184                 if (IDialogConstants.OK_ID == buttonId) {
 185                         okPressed();
 186                 } else if (IDialogConstants.CANCEL_ID == buttonId) {
 187                         cancelPressed();
 188                 }
 189         }
 190
 191         protected void okPressed() {
 192                 language = getLanguageSelection();
 193                 lastLanguage = language;
 194                 super.okPressed();
 195         }
 196
 197         protected void cancelPressed() {
 198                 language = null;
 199                 super.cancelPressed();
 200         }
 201
 202         private Language getLanguageSelection() {
 203                 int i = combo.getSelectionIndex();
 204                 return languages.get(i);
 205         }
 206 }