RegularExpressionItemProvider.java

/**
 * <copyright> </copyright>
 * 
 * $Id$
 */
package org.talend.dataquality.domain.pattern.provider;

import java.util.Collection;
import java.util.List;

import org.eclipse.emf.common.notify.AdapterFactory;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.edit.provider.ComposeableAdapterFactory;
import org.eclipse.emf.edit.provider.IEditingDomainItemProvider;
import org.eclipse.emf.edit.provider.IItemLabelProvider;
import org.eclipse.emf.edit.provider.IItemPropertyDescriptor;
import org.eclipse.emf.edit.provider.IItemPropertySource;
import org.eclipse.emf.edit.provider.IStructuredItemContentProvider;
import org.eclipse.emf.edit.provider.ITreeItemContentProvider;
import org.eclipse.emf.edit.provider.ItemPropertyDescriptor;
import org.eclipse.emf.edit.provider.ViewerNotification;
import org.talend.dataquality.domain.pattern.PatternPackage;
import org.talend.dataquality.domain.pattern.RegularExpression;
import orgomg.cwm.foundation.datatypes.DatatypesFactory;
import orgomg.cwm.objectmodel.core.CoreFactory;

/**
 * This is the item provider adapter for a {@link org.talend.dataquality.domain.pattern.RegularExpression} object. <!--
 * begin-user-doc --> <!-- end-user-doc -->
 * 
 * @generated
 */
public class RegularExpressionItemProvider extends PatternComponentItemProvider implements IEditingDomainItemProvider,
        IStructuredItemContentProvider, ITreeItemContentProvider, IItemLabelProvider, IItemPropertySource {

    /**
     * This constructs an instance from a factory and a notifier. <!-- begin-user-doc --> <!-- end-user-doc -->
     * 
     * @generated
     */
    public RegularExpressionItemProvider(AdapterFactory adapterFactory) {
        super(adapterFactory);
    }

    /**
     * This returns the property descriptors for the adapted class. <!-- begin-user-doc --> <!-- end-user-doc -->
     * 
     * @generated
     */
    @Override
    public List<IItemPropertyDescriptor> getPropertyDescriptors(Object object) {
        if (itemPropertyDescriptors == null) {
            super.getPropertyDescriptors(object);

            addExpressionTypePropertyDescriptor(object);
        }
        return itemPropertyDescriptors;
    }

    /**
     * This adds a property descriptor for the Expression Type feature. <!-- begin-user-doc --> <!-- end-user-doc -->
     * 
     * @generated
     */
    protected void addExpressionTypePropertyDescriptor(Object object) {
        itemPropertyDescriptors.add(createItemPropertyDescriptor(((ComposeableAdapterFactory) adapterFactory)
                .getRootAdapterFactory(), getResourceLocator(), getString("_UI_RegularExpression_expressionType_feature"),
                getString("_UI_PropertyDescriptor_description", "_UI_RegularExpression_expressionType_feature",
                        "_UI_RegularExpression_type"), PatternPackage.Literals.REGULAR_EXPRESSION__EXPRESSION_TYPE, true, false,
                false, ItemPropertyDescriptor.GENERIC_VALUE_IMAGE, null, null));
    }

    /**
     * This specifies how to implement {@link #getChildren} and is used to deduce an appropriate feature for an
     * {@link org.eclipse.emf.edit.command.AddCommand}, {@link org.eclipse.emf.edit.command.RemoveCommand} or
     * {@link org.eclipse.emf.edit.command.MoveCommand} in {@link #createCommand}. <!-- begin-user-doc --> <!--
     * end-user-doc -->
     * 
     * @generated
     */
    @Override
    public Collection<? extends EStructuralFeature> getChildrenFeatures(Object object) {
        if (childrenFeatures == null) {
            super.getChildrenFeatures(object);
            childrenFeatures.add(PatternPackage.Literals.REGULAR_EXPRESSION__EXPRESSION);
        }
        return childrenFeatures;
    }

    /**
     * <!-- begin-user-doc --> <!-- end-user-doc -->
     * 
     * @generated
     */
    @Override
    protected EStructuralFeature getChildFeature(Object object, Object child) {
        // Check the type of the specified child object and return the proper feature to use for
        // adding (see {@link AddCommand}) it as a child.

        return super.getChildFeature(object, child);
    }

    /**
     * This returns RegularExpression.gif. <!-- begin-user-doc --> <!-- end-user-doc -->
     * 
     * @generated
     */
    @Override
    public Object getImage(Object object) {
        return overlayImage(object, getResourceLocator().getImage("full/obj16/RegularExpression"));
    }

    /**
     * This returns the label text for the adapted class. <!-- begin-user-doc --> <!-- end-user-doc -->
     * 
     * @generated
     */
    @Override
    public String getText(Object object) {
        String label = ((RegularExpression) object).getExpressionType();
        return label == null || label.length() == 0 ? getString("_UI_RegularExpression_type")
                : getString("_UI_RegularExpression_type") + " " + label;
    }

    /**
     * This handles model notifications by calling {@link #updateChildren} to update any cached children and by creating
     * a viewer notification, which it passes to {@link #fireNotifyChanged}. <!-- begin-user-doc --> <!-- end-user-doc
     * -->
     * 
     * @generated
     */
    @Override
    public void notifyChanged(Notification notification) {
        updateChildren(notification);

        switch (notification.getFeatureID(RegularExpression.class)) {
        case PatternPackage.REGULAR_EXPRESSION__EXPRESSION_TYPE:
            fireNotifyChanged(new ViewerNotification(notification, notification.getNotifier(), false, true));
            return;
        case PatternPackage.REGULAR_EXPRESSION__EXPRESSION:
            fireNotifyChanged(new ViewerNotification(notification, notification.getNotifier(), true, false));
            return;
        }
        super.notifyChanged(notification);
    }

    /**
     * This adds {@link org.eclipse.emf.edit.command.CommandParameter}s describing the children that can be created
     * under this object. <!-- begin-user-doc --> <!-- end-user-doc -->
     * 
     * @generated
     */
    @Override
    protected void collectNewChildDescriptors(Collection<Object> newChildDescriptors, Object object) {
        super.collectNewChildDescriptors(newChildDescriptors, object);

        newChildDescriptors.add(createChildParameter(PatternPackage.Literals.REGULAR_EXPRESSION__EXPRESSION,
                CoreFactory.eINSTANCE.createExpression()));

        newChildDescriptors.add(createChildParameter(PatternPackage.Literals.REGULAR_EXPRESSION__EXPRESSION,
                CoreFactory.eINSTANCE.createBooleanExpression()));

        newChildDescriptors.add(createChildParameter(PatternPackage.Literals.REGULAR_EXPRESSION__EXPRESSION,
                CoreFactory.eINSTANCE.createProcedureExpression()));

        newChildDescriptors.add(createChildParameter(PatternPackage.Literals.REGULAR_EXPRESSION__EXPRESSION,
                DatatypesFactory.eINSTANCE.createQueryExpression()));
    }

}