eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/ui/mvc/OriginalLabelDataField.java

   1 // $Id$
   2 /**
   3 * Copyright (C) 2014 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 package eu.etaxonomy.taxeditor.ui.mvc;
  11
  12 import java.util.List;
  13
  14 import org.eclipse.core.databinding.DataBindingContext;
  15 import org.eclipse.core.databinding.beans.BeansObservables;
  16 import org.eclipse.core.databinding.observable.value.IObservableValue;
  17 import org.eclipse.jface.databinding.swt.SWTObservables;
  18 import org.eclipse.jface.util.IPropertyChangeListener;
  19 import org.eclipse.swt.SWT;
  20 import org.eclipse.swt.events.ModifyEvent;
  21 import org.eclipse.swt.events.ModifyListener;
  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.Label;
  26 import org.eclipse.swt.widgets.Text;
  27
  28 import eu.etaxonomy.cdm.model.occurrence.DerivedUnit;
  29 import eu.etaxonomy.taxeditor.ui.element.CdmFormFactory;
  30 import eu.etaxonomy.taxeditor.ui.element.CdmPropertyChangeEvent;
  31
  32 /**
  33  * @author pplitzner
  34  * @date 23.06.2014
  35  *
  36  */
  37 public class OriginalLabelDataField extends Composite {
  38
  39     private DataBindingContext m_bindingContext;
  40     private DerivedUnit derivedUnit = null;
  41     private final Text originalLabelInfoText;
  42     private CdmFormFactory formFactory;
  43
  44     public OriginalLabelDataField(Composite parent, int style, DerivedUnit newDerivedUnit, CdmFormFactory formFactory) {
  45         this(parent, style);
  46         setDerivedUnit(newDerivedUnit);
  47         this.formFactory = formFactory;
  48     }
  49
  50     public OriginalLabelDataField(Composite parent, int style) {
  51         super(parent, style);
  52         setLayout(new GridLayout(2, false));
  53
  54         new Label(this, SWT.NONE).setText("Original Label Data");
  55
  56         originalLabelInfoText = new Text(this, SWT.BORDER | SWT.WRAP | SWT.MULTI);
  57         originalLabelInfoText.addModifyListener(new ModifyListener() {
  58             @Override
  59             public void modifyText(ModifyEvent e) {
  60                 if(formFactory!=null){
  61                     List<IPropertyChangeListener> propertyChangeListeners = formFactory.getPropertyChangeListeners();
  62                     for (IPropertyChangeListener iPropertyChangeListener : propertyChangeListeners) {
  63                         iPropertyChangeListener.propertyChange(new CdmPropertyChangeEvent(OriginalLabelDataField.this, e));
  64                     }
  65                 }
  66             }
  67         });
  68         originalLabelInfoText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
  69
  70         if (derivedUnit != null) {
  71             m_bindingContext = initDataBindings();
  72         }
  73     }
  74
  75     @Override
  76     protected void checkSubclass() {
  77         // Disable the check that prevents subclassing of SWT components
  78     }
  79
  80     private DataBindingContext initDataBindings() {
  81         IObservableValue originalLabelInfoObserveWidget = SWTObservables.observeText(originalLabelInfoText, SWT.Modify);
  82         IObservableValue originalLabelInfoObserveValue = BeansObservables
  83                 .observeValue(derivedUnit, "originalLabelInfo");
  84         //
  85         DataBindingContext bindingContext = new DataBindingContext();
  86         //
  87         bindingContext.bindValue(originalLabelInfoObserveWidget, originalLabelInfoObserveValue, null, null);
  88         //
  89         return bindingContext;
  90     }
  91
  92     public DerivedUnit getDerivedUnit() {
  93         return derivedUnit;
  94     }
  95
  96     public void setDerivedUnit(DerivedUnit newDerivedUnit) {
  97         setDerivedUnit(newDerivedUnit, true);
  98     }
  99
 100     public void setDerivedUnit(DerivedUnit newDerivedUnit, boolean update) {
 101         derivedUnit = newDerivedUnit;
 102         if (update) {
 103             if (m_bindingContext != null) {
 104                 m_bindingContext.dispose();
 105                 m_bindingContext = null;
 106             }
 107             if (derivedUnit != null) {
 108                 m_bindingContext = initDataBindings();
 109             }
 110         }
 111     }
 112
 113 }