Example usage for org.eclipse.jface.databinding.viewers ObservableListContentProvider getKnownElements

List of usage examples for org.eclipse.jface.databinding.viewers ObservableListContentProvider getKnownElements

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Introduction

In this page you can find the example usage for org.eclipse.jface.databinding.viewers ObservableListContentProvider getKnownElements.

Prototype

public IObservableSet<E> getKnownElements()

Source Link

Document

Returns the set of elements known to this content provider.

Usage

From source file:era.foss.typeeditor.common.Ui.java

License:Open Source License

/**
 * Create a column with EMF databinding for a table viewer
 * /*w w  w.j a  va  2 s . c  om*/
 * <li>In case the top level structural feature is a reference display a combo box</li> <li>In case the top level
 * structural feature is a containment reference create element if it does not exist</li> <li>In case the structural
 * feature is a boolean show a checkbox</li> <li>Otherwise show a simple text field</li>.
 *
 * @param column the column
 * @param eStructuralFeatureList list to create a feature path from
 * @param refObservedObject the ref observed object
 * @param refEStructuralFeatureList the ref e structural feature list
 */
public void bindColumn(TableViewerColumn column, EStructuralFeature[] eStructuralFeatureList,
        EObject refObservedObject, EStructuralFeature[] refEStructuralFeatureList) {

    TableViewer tableViewer = (TableViewer) column.getViewer();
    ObservableListContentProvider cp = (ObservableListContentProvider) tableViewer.getContentProvider();
    assert (cp != null);

    // get the top level structural feature
    EStructuralFeature topStructuralFeature = eStructuralFeatureList[0];

    // set label provider
    IValueProperty elementProperty = EMFEditProperties.value(editingDomain,
            FeaturePath.fromList(eStructuralFeatureList));
    IObservableMap attributeMap = elementProperty.observeDetail(cp.getKnownElements());
    column.setLabelProvider(new ObservableMapCellLabelProvider(attributeMap));

    EditingSupport editingSupport = null;

    // Show combo box for references
    if (refObservedObject != null && refEStructuralFeatureList != null) {

        // Combo box: Create combo box to select choices for the reference
        ComboBoxViewerCellEditor combo = new ComboBoxViewerCellEditorSp((Composite) tableViewer.getControl(),
                SWT.READ_ONLY);
        // Combo box: Set Content Provider
        ObservableListContentProvider comboContentProvider = new ObservableListContentProvider();
        combo.setContentProvider(comboContentProvider);

        IObservableMap comboAttributeMap = EMFProperties
                .value(eStructuralFeatureList[eStructuralFeatureList.length - 1])
                .observeDetail(comboContentProvider.getKnownElements());
        combo.setLabelProvider(new ObservableMapLabelProvider(comboAttributeMap));
        // Combo box: set input
        IEMFListProperty dataTypeDefinitions = EMFProperties
                .list(FeaturePath.fromList(refEStructuralFeatureList));
        combo.setInput(dataTypeDefinitions.observe(refObservedObject));

        // Set editing support of table cell
        IValueProperty editorElementProperty = EMFEditProperties.value(editingDomain, topStructuralFeature);
        IValueProperty cellEditorProperty = ViewerProperties.singleSelection();

        editingSupport = ObservableValueEditingSupport.create(tableViewer, dataBindContext, combo,
                cellEditorProperty, editorElementProperty);

    }
    // Simple text
    else {
        IValueProperty cellEditorProperty = CellEditorProperties.control()
                .value(WidgetProperties.text(SWT.Modify));

        editingSupport = ObservableValueEditingSupport.create(tableViewer, dataBindContext,
                new TextCellEditor(tableViewer.getTable()), cellEditorProperty, elementProperty);
    }

    column.setEditingSupport(editingSupport);

}

From source file:era.foss.typeeditor.spectype.AttributeDefinitionDetailViewer.java

License:Open Source License

/**
 * Show UI elements for DatatypeDefintionEnumeration
 *///from  w w w . jav  a2 s  .co  m
private void createDetailsEnumeration() {
    final AttributeDefinitionEnumeration attributeDefinitionEnum = (AttributeDefinitionEnumeration) master
            .getValue();

    // create label for multiValued property
    Label label = new Label(detailComposite, SWT.NONE);
    label.setText(Ui.getUiName(ErfPackage.Literals.ATTRIBUTE_DEFINITION_ENUMERATION__MULTI_VALUED));
    label.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, true, false));

    // create checkbox for multiValued property
    EAttribute[] isMultiValued = { ErfPackage.Literals.ATTRIBUTE_DEFINITION_ENUMERATION__MULTI_VALUED };
    BindingCheckBox multiValuedCheckbox = new BindingCheckBox(detailComposite, SWT.NONE);
    multiValuedCheckbox.setLayoutData(new GridData(SWT.LEFT, SWT.DEFAULT, true, false));
    multiValuedCheckbox.bind(editingDomain, isMultiValued, master);

    // create checkbox for enabling default value
    Button defaultValueCheckbox = createDefaultValueCheckbox(attributeDefinitionEnum,
            ErfPackage.Literals.ATTRIBUTE_DEFINITION_ENUMERATION__DEFAULT_VALUE);

    // create table for selecting default EnumValue elements
    Table defaultValueTable = new Table(detailComposite,
            SWT.MULTI | SWT.BORDER | SWT.FULL_SELECTION | SWT.CHECK);
    defaultValueTable.setLinesVisible(true);
    defaultValueTable.setHeaderVisible(true);

    final CheckboxTableViewer defaultValueTableViewer = new CheckboxTableViewer(defaultValueTable);
    defaultValueTable.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 2, 1));

    final ObservableListContentProvider cp = new ObservableListContentProvider();
    defaultValueTableViewer.setContentProvider(cp);

    TableViewerColumn column = new TableViewerColumn(defaultValueTableViewer, SWT.NONE);

    column.getColumn().setResizable(false);
    column.getColumn().setMoveable(false);
    column.getColumn().setText(Ui.getUiName(ErfPackage.Literals.ATTRIBUTE_VALUE_ENUMERATION__VALUES));
    column.getColumn().pack();

    // set label provider
    IValueProperty elementProperty = EMFEditProperties.value(editingDomain,
            FeaturePath.fromList(new EStructuralFeature[] { ErfPackage.Literals.IDENTIFIABLE__LONG_NAME }));
    IObservableMap attributeMap = elementProperty.observeDetail(cp.getKnownElements());
    column.setLabelProvider(new ObservableMapCellLabelProvider(attributeMap));

    // Add provider for the check stare of the table viewer
    // A value is checked if it is referred by the Default value of the AttributeDefintionEnumeration
    defaultValueTableViewer.setCheckStateProvider(new ICheckStateProvider() {
        @Override
        public boolean isGrayed(Object element) {
            return false;
        }

        @Override
        public boolean isChecked(Object element) {
            AttributeValueEnumeration enumDefaultValue = attributeDefinitionEnum.getDefaultValue();
            return enumDefaultValue != null && enumDefaultValue.getValues().contains(element);
        }
    });

    // If a EnumValue is selected add it to the list of Default values for the AttributeDefintionEnumeration
    // Otherwise remove it from the list of default values
    defaultValueTableViewer.addCheckStateListener(new ICheckStateListener() {

        @Override
        public void checkStateChanged(CheckStateChangedEvent event) {
            // we don't need to check if the default value object is null as
            // in this case table viewer is disabled
            assert (attributeDefinitionEnum.getDefaultValue() != null);

            EnumValue enumValue = ((EnumValue) event.getElement());
            Command command = null;

            if (event.getChecked() == true) {
                command = AddCommand.create(editingDomain, attributeDefinitionEnum.getDefaultValue(),
                        ErfPackage.Literals.ATTRIBUTE_VALUE_ENUMERATION__VALUES, enumValue);
            } else {
                command = RemoveCommand.create(editingDomain, attributeDefinitionEnum.getDefaultValue(),
                        ErfPackage.Literals.ATTRIBUTE_VALUE_ENUMERATION__VALUES, enumValue);
            }
            editingDomain.getCommandStack().execute(command);
        }
    });

    // observe values of DatatypeDefinition selected for the AttributeDefintionEnumeration
    IEMFListProperty enumerationProperty = EMFProperties.list(
            FeaturePath.fromList(new EStructuralFeature[] { ErfPackage.Literals.ATTRIBUTE_DEFINITION__TYPE,
                    ErfPackage.Literals.DATATYPE_DEFINITION_ENUMERATION__SPECIFIED_VALUES }));
    IObservableList dataTypeEnumValueObserver = enumerationProperty.observe(attributeDefinitionEnum);
    defaultValueTableViewer.setInput(dataTypeEnumValueObserver);

    // only enable table viewer in case a default value exists
    dataBindingContext.bindValue(SWTObservables.observeEnabled(defaultValueTable),
            SWTObservables.observeSelection(defaultValueCheckbox));

}

From source file:era.foss.typeeditor.view.ViewForm.java

License:Open Source License

/**
 * Create a Combo box for selecting the {@link SpecType} of the respective view
 * /*  w  w  w .j ava  2s  .  co m*/
 * @param parent parent composite
 */
private void createSpecTypeComboViewer(Composite parent) {

    final ComboViewer specTypeComboViewer = new ComboViewer(parent, SWT.READ_ONLY) {
        @Override
        protected void doUpdateItem(Widget data, Object element, boolean fullMap) {
            // memorize the selection before updating the item, as the
            // update routine removes the selection...
            ISelection currentSelection = this.getSelection();
            super.doUpdateItem(data, element, fullMap);
            // set the selection to the previous value
            this.setSelection(currentSelection);
        }
    };
    ObservableListContentProvider contentProvider = new ObservableListContentProvider();
    specTypeComboViewer.getControl().setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));

    // set content provider
    specTypeComboViewer.setContentProvider(contentProvider);
    // set label provider
    specTypeComboViewer.setLabelProvider(
            new ObservableMapLabelProvider(EMFProperties.value(ErfPackage.Literals.IDENTIFIABLE__LONG_NAME)
                    .observeDetail(contentProvider.getKnownElements())));

    // set input
    IEMFListProperty specTypeProperty = EMFProperties.list(ErfPackage.Literals.CONTENT__SPEC_TYPES);
    specTypeComboViewer.setInput(specTypeProperty.observe(this.erfModel.getCoreContent()));
    specTypeMaster = ViewerProperties.singleSelection().observe(specTypeComboViewer);
    if (erfModel.getCoreContent().getSpecTypes().size() > 0) {
        specTypeComboViewer
                .setSelection(new StructuredSelection(erfModel.getCoreContent().getSpecTypes().get(0)));
    }

    specTypeMaster.addValueChangeListener(new IValueChangeListener() {

        @Override
        public void handleValueChange(ValueChangeEvent event) {
            viewElementTableViewer.refresh();
            viewLayoutViewer.refresh();

        }
    });
}

From source file:era.foss.typeeditor.view.ViewForm.java

License:Open Source License

/**
 * Creates the table viewer for {@link ViewElements}
 * /* w w  w. ja va  2  s . c  o m*/
 * @param parent parent composite
 */
private void createViewElementTableViewer(Composite parent) {

    this.viewElementTableViewer = new AddDeleteTableViewer(parent,
            SWT.MULTI | SWT.V_SCROLL | SWT.BORDER | SWT.FULL_SELECTION | AddDeleteTableViewer.NO_DESCRIPTION) {

        @Override
        public void addElement() {
            this.elementOwner = (EObject) viewMaster.getValue();
            super.addElement(); // is_a ViewElement
            ViewElement addedViewElement = (ViewElement) super.getElementAt(super.doGetItemCount() - 1);
            // default placement of views' elements
            addedViewElement.setEditorRowPosition(getCurrentMaxRowIdx() + 1);
            addedViewElement.setEditorColumnPosition(0);
            addedViewElement.setEditorColumnSpan(2);
            addedViewElement.setEditorRowSpan(1);
        }

        /**
         * Calculates maximum row index of existing view elements
         * 
         * @return maximum row index
         */
        private int getCurrentMaxRowIdx() {
            int maxRowIdx = 0;
            for (int i = 0; i < super.doGetItemCount(); ++i) {
                ViewElement iterViewElement = (ViewElement) super.getElementAt(i);
                maxRowIdx = Math.max(maxRowIdx,
                        iterViewElement.getEditorRowPosition() + (iterViewElement.getEditorRowSpan() - 1));
            }
            return maxRowIdx;
        }

        @Override
        protected void createButtonBar() {
            super.createButtonBar();
            // FIXME @cpn create "add all" button
        }
    };

    // the owner is null as it is set in the overridden addElement() method
    viewElementTableViewer.setElementInformation((EObject) viewMaster.getValue(),
            ErfPackage.Literals.VIEW__VIEW_ELEMENTS, ErfPackage.Literals.VIEW_ELEMENT);

    viewElementTableViewer.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 2));
    viewElementTableViewer.setEditingDomain(editingDomain);

    ObservableListContentProvider tableViewerContentProvider = new ObservableListContentProvider();
    viewElementTableViewer.setContentProvider(tableViewerContentProvider);

    TableColumnLayout columnLayout = (TableColumnLayout) viewElementTableViewer.getTable().getParent()
            .getLayout();

    // create column showing the Attribute Definition
    TableViewerColumn attributeDefinitionColumn = new TableViewerColumn(viewElementTableViewer, SWT.NONE);
    columnLayout.setColumnData(attributeDefinitionColumn.getColumn(), new ColumnWeightData(100, 70));
    attributeDefinitionColumn.getColumn().setResizable(false);
    attributeDefinitionColumn.getColumn().setMoveable(false);
    attributeDefinitionColumn.getColumn()
            .setText(Ui.getUiName(ErfPackage.Literals.VIEW_ELEMENT__ATTRIBUTE_DEFINITION));

    // label provider for column showing the AttributeDefintion
    IValueProperty elementProperty = EMFEditProperties.value(editingDomain,
            FeaturePath
                    .fromList(new EStructuralFeature[] { ErfPackage.Literals.VIEW_ELEMENT__ATTRIBUTE_DEFINITION,
                            ErfPackage.Literals.IDENTIFIABLE__LONG_NAME }));
    IObservableMap attributeMap = elementProperty.observeDetail(tableViewerContentProvider.getKnownElements());
    attributeDefinitionColumn.setLabelProvider(new ObservableMapCellLabelProvider(attributeMap));

    // editing support column showing the AttributeDefintion

    // Combo box: Create combo box to select choices for the reference
    ComboBoxViewerCellEditor combo = new ComboBoxViewerCellEditorSp(
            (Composite) viewElementTableViewer.getControl(), SWT.DROP_DOWN | SWT.READ_ONLY);
    // Combo box: Set Content Provider;
    ObservableListContentProvider comboBoxContentProvider = new ObservableListContentProvider();
    combo.setContentProvider(comboBoxContentProvider);

    // Combo box: Set Label Provider
    combo.setLabelProvider(
            new ObservableMapLabelProvider(EMFProperties.value(ErfPackage.Literals.IDENTIFIABLE__LONG_NAME)
                    .observeDetail(comboBoxContentProvider.getKnownElements())));
    // Combo box: set input from selected specType
    IEMFListProperty specAttributesProperty = EMFProperties
            .list(ErfPackage.Literals.SPEC_TYPE__SPEC_ATTRIBUTES);
    combo.setInput(specAttributesProperty.observeDetail(specTypeMaster));

    // Set editing support of table cell
    IValueProperty editorElementProperty = EMFEditProperties.value(editingDomain,
            ErfPackage.Literals.VIEW_ELEMENT__ATTRIBUTE_DEFINITION);
    IValueProperty cellEditorProperty = ViewerProperties.singleSelection();

    attributeDefinitionColumn.setEditingSupport(ObservableValueEditingSupport.create(viewElementTableViewer,
            dataBindContext, combo, cellEditorProperty, editorElementProperty));

    // provide input for the table
    IEMFListProperty viewsProperty = EMFProperties.list(ErfPackage.Literals.VIEW__VIEW_ELEMENTS);
    viewElementTableViewer.addFilter(new SpecTypeFilter());
    viewElementTableViewer.setInput(viewsProperty.observeDetail(viewMaster));

    viewElementMaster = ViewerProperties.singleSelection().observe(viewElementTableViewer);
    viewElementTableViewer.getTable().select(0);
}

From source file:joachimeichborn.geotag.ui.parts.GeocodingView.java

License:Open Source License

private void bindPictureViewer() {
    final List<IBeanValueProperty> properties = new LinkedList<>();
    properties.add(BeanProperties.value(Picture.class, Picture.FILE_PROPERTY));
    properties.add(BeanProperties.value(Picture.class, Picture.TIME_PROPERTY));
    properties.add(BeanProperties.value(Picture.class, Picture.COORDINATES_PROPERTY));
    final IBeanValueProperty geocoding = BeanProperties.value(Picture.class, Picture.GEOCODING_PROPERTY);
    final IBeanValueProperty locationName = BeanProperties.value(Geocoding.class,
            Geocoding.LOCATION_NAME_PROPERTY);
    properties.add(geocoding.value(locationName));
    final IBeanValueProperty city = BeanProperties.value(Geocoding.class, Geocoding.CITY_PROPERTY);
    properties.add(geocoding.value(city));
    final IBeanValueProperty sublocation = BeanProperties.value(Geocoding.class,
            Geocoding.SUBLOCATION_PROPERTY);
    properties.add(geocoding.value(sublocation));
    final IBeanValueProperty province = BeanProperties.value(Geocoding.class,
            Geocoding.PROVINCE_STATE_PROPERTY);
    properties.add(geocoding.value(province));
    final IBeanValueProperty countryCode = BeanProperties.value(Geocoding.class,
            Geocoding.COUNTRY_CODE_PROPERTY);
    properties.add(geocoding.value(countryCode));
    final IBeanValueProperty countryName = BeanProperties.value(Geocoding.class,
            Geocoding.COUNTRY_NAME_PROPERTY);
    properties.add(geocoding.value(countryName));
    final IBeanValueProperty[] propertiesArray = properties.toArray(new IBeanValueProperty[properties.size()]);

    final ObservableListContentProvider contentProvider = new ObservableListContentProvider();
    inputPictureViewer.setContentProvider(contentProvider);
    final IObservableMap[] observables = Properties.observeEach(contentProvider.getKnownElements(),
            propertiesArray);/*from www  . j  a v a 2  s  . c  o m*/
    inputPictureViewer.setLabelProvider(
            new PictureViewerObservableLabelProvider(observables, Arrays.asList(ALL_COLUMNS)));
    final IObservableList input = BeanProperties.list(PicturesRepo.class, PicturesRepo.PICTURES_PROPERTY)
            .observe(picturesRepo);

    inputPictureViewer.setInput(input);
}

From source file:joachimeichborn.geotag.ui.parts.PicturesView.java

License:Open Source License

private void bindPictureViewer() {
    final List<IBeanValueProperty> properties = new LinkedList<>();
    properties.add(BeanProperties.value(Picture.class, Picture.FILE_PROPERTY));
    properties.add(BeanProperties.value(Picture.class, Picture.TIME_PROPERTY));
    properties.add(BeanProperties.value(Picture.class, Picture.COORDINATES_PROPERTY));
    final IBeanValueProperty[] propertiesArray = properties.toArray(new IBeanValueProperty[properties.size()]);

    final ObservableListContentProvider contentProvider = new ObservableListContentProvider();
    pictureViewer.setContentProvider(contentProvider);
    final IObservableMap[] observables = Properties.observeEach(contentProvider.getKnownElements(),
            propertiesArray);/*from   w  ww. java  2  s. c  o  m*/
    pictureViewer
            .setLabelProvider(new PictureViewerObservableLabelProvider(observables, Arrays.asList(COLUMNS)));
    final IObservableList input = BeanProperties.list(PicturesRepo.class, PicturesRepo.PICTURES_PROPERTY)
            .observe(picturesRepo);

    pictureViewer.setInput(input);
}

From source file:joachimeichborn.geotag.ui.parts.PositionAnnotationView.java

License:Open Source License

private void bindTrackViewer() {
    final List<IBeanValueProperty> properties = new LinkedList<>();
    properties.add(BeanProperties.value(Track.class, Track.FILE_PROPERTY));
    properties.add(BeanProperties.value(Track.class, Track.POSITIONS_PROPERTY));
    properties.add(BeanProperties.value(Track.class, Track.COLOR_PROPERTY));
    final IBeanValueProperty[] propertiesArray = properties.toArray(new IBeanValueProperty[properties.size()]);

    final ObservableListContentProvider contentProvider = new ObservableListContentProvider();
    trackViewer.setContentProvider(contentProvider);
    final IObservableMap[] observables = Properties.observeEach(contentProvider.getKnownElements(),
            propertiesArray);/*from w  ww  .  j a  va2  s.  c  om*/
    trackViewer.setLabelProvider(new TrackViewerObservableLabelProvider(observables,
            Arrays.asList(TRACK_VIEWER_COLUMNS), colorPreviewGenerator));
    final IObservableList input = BeanProperties.list(TracksRepo.class, TracksRepo.TRACKS_PROPERTY)
            .observe(tracksRepo);

    trackViewer.setInput(input);
}

From source file:joachimeichborn.geotag.ui.parts.PositionAnnotationView.java

License:Open Source License

private void bindPictureViewer() {
    final List<IBeanValueProperty> properties = new LinkedList<>();
    properties.add(BeanProperties.value(Picture.class, Picture.FILE_PROPERTY));
    properties.add(BeanProperties.value(Picture.class, Picture.TIME_PROPERTY));
    properties.add(BeanProperties.value(Picture.class, Picture.COORDINATES_PROPERTY));
    final IBeanValueProperty[] propertiesArray = properties.toArray(new IBeanValueProperty[properties.size()]);

    final ObservableListContentProvider contentProvider = new ObservableListContentProvider();
    pictureViewer.setContentProvider(contentProvider);
    final IObservableMap[] observables = Properties.observeEach(contentProvider.getKnownElements(),
            propertiesArray);//from   w  w  w .ja  va2 s . c  o  m
    pictureViewer.setLabelProvider(
            new PictureViewerObservableLabelProvider(observables, Arrays.asList(PICTURE_VIEWER_COLUMNS)));
    final IObservableList input = BeanProperties.list(PicturesRepo.class, PicturesRepo.PICTURES_PROPERTY)
            .observe(picturesRepo);

    pictureViewer.setInput(input);
}

From source file:joachimeichborn.geotag.ui.parts.TrackImprovementView.java

License:Open Source License

private void bindTrackViewer() {
    final List<IBeanValueProperty> properties = new LinkedList<>();
    properties.add(BeanProperties.value(Track.class, Track.FILE_PROPERTY));
    properties.add(BeanProperties.value(Track.class, Track.POSITIONS_PROPERTY));
    properties.add(BeanProperties.value(Track.class, Track.COLOR_PROPERTY));
    final IBeanValueProperty[] propertiesArray = properties.toArray(new IBeanValueProperty[properties.size()]);

    final ObservableListContentProvider contentProvider = new ObservableListContentProvider();
    trackViewer.setContentProvider(contentProvider);
    final IObservableMap[] observables = Properties.observeEach(contentProvider.getKnownElements(),
            propertiesArray);/*from  w  w  w .  ja v  a2 s. co  m*/
    trackViewer.setLabelProvider(
            new TrackViewerObservableLabelProvider(observables, Arrays.asList(COLUMNS), colorPreviewGenerator));
    final IObservableList input = BeanProperties.list(TracksRepo.class, TracksRepo.TRACKS_PROPERTY)
            .observe(tracksRepo);

    trackViewer.setInput(input);
}

From source file:joachimeichborn.geotag.ui.parts.TracksView.java

License:Open Source License

private void bindTracksViewer() {
    final List<IBeanValueProperty> properties = new LinkedList<>();
    properties.add(BeanProperties.value(Track.class, Track.FILE_PROPERTY));
    properties.add(BeanProperties.value(Track.class, Track.POSITIONS_PROPERTY));
    properties.add(BeanProperties.value(Track.class, Track.COLOR_PROPERTY));
    final IBeanValueProperty[] propertiesArray = properties.toArray(new IBeanValueProperty[properties.size()]);

    final ObservableListContentProvider contentProvider = new ObservableListContentProvider();
    trackViewer.setContentProvider(contentProvider);
    final IObservableMap[] observables = Properties.observeEach(contentProvider.getKnownElements(),
            propertiesArray);//from w  w w . j  a v a2 s.com
    trackViewer.setLabelProvider(
            new TrackViewerObservableLabelProvider(observables, Arrays.asList(COLUMNS), colorPreviewGenerator));
    final IObservableList input = BeanProperties.list(TracksRepo.class, TracksRepo.TRACKS_PROPERTY)
            .observe(tracksRepo);

    trackViewer.setInput(input);
}