plugins/org.eclipse.emf.cdo.evolution.edit/src/org/eclipse/emf/cdo/evolution/provider/ModelItemProvider.java

/**
 */
package org.eclipse.emf.cdo.evolution.provider;

import org.eclipse.emf.cdo.evolution.EvolutionPackage;
import org.eclipse.emf.cdo.evolution.Model;

import org.eclipse.emf.common.command.Command;
import org.eclipse.emf.common.notify.AdapterFactory;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.util.ResourceLocator;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.edit.command.CommandParameter;
import org.eclipse.emf.edit.command.DragAndDropCommand;
import org.eclipse.emf.edit.command.SetCommand;
import org.eclipse.emf.edit.domain.EditingDomain;
import org.eclipse.emf.edit.provider.ComposeableAdapterFactory;
import org.eclipse.emf.edit.provider.IChildCreationExtender;
import org.eclipse.emf.edit.provider.IEditingDomainItemProvider;
import org.eclipse.emf.edit.provider.IItemColorProvider;
import org.eclipse.emf.edit.provider.IItemFontProvider;
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.IItemStyledLabelProvider;
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.ItemProviderAdapter;
import org.eclipse.emf.edit.provider.StyledString;
import org.eclipse.emf.edit.provider.ViewerNotification;

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

/**
 * This is the item provider adapter for a {@link org.eclipse.emf.cdo.evolution.Model} object.
 * <!-- begin-user-doc -->
 * <!-- end-user-doc -->
 * @generated
 */
public class ModelItemProvider extends ItemProviderAdapter implements IEditingDomainItemProvider, IStructuredItemContentProvider, ITreeItemContentProvider,
    IItemLabelProvider, IItemPropertySource, IItemColorProvider, IItemFontProvider, IItemStyledLabelProvider
{
  /**
   * This constructs an instance from a factory and a notifier.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  public ModelItemProvider(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);

      addURIPropertyDescriptor(object);
      addRootPackagePropertyDescriptor(object);
      addAllPackagesPropertyDescriptor(object);
      addReferencedPackagesPropertyDescriptor(object);
      addMissingPackagesPropertyDescriptor(object);
    }
    return itemPropertyDescriptors;
  }

  /**
   * This adds a property descriptor for the URI feature.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  protected void addURIPropertyDescriptor(Object object)
  {
    itemPropertyDescriptors.add(createItemPropertyDescriptor(((ComposeableAdapterFactory)adapterFactory).getRootAdapterFactory(), getResourceLocator(),
        getString("_UI_Model_uRI_feature"), getString("_UI_PropertyDescriptor_description", "_UI_Model_uRI_feature", "_UI_Model_type"),
        EvolutionPackage.Literals.MODEL__URI, true, false, false, ItemPropertyDescriptor.GENERIC_VALUE_IMAGE, null, null));
  }

  /**
   * This adds a property descriptor for the Root Package feature.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  protected void addRootPackagePropertyDescriptor(Object object)
  {
    itemPropertyDescriptors.add(createItemPropertyDescriptor(((ComposeableAdapterFactory)adapterFactory).getRootAdapterFactory(), getResourceLocator(),
        getString("_UI_Model_rootPackage_feature"), getString("_UI_PropertyDescriptor_description", "_UI_Model_rootPackage_feature", "_UI_Model_type"),
        EvolutionPackage.Literals.MODEL__ROOT_PACKAGE, false, false, false, null, null, null));
  }

  /**
   * This adds a property descriptor for the All Packages feature.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  protected void addAllPackagesPropertyDescriptor(Object object)
  {
    itemPropertyDescriptors.add(createItemPropertyDescriptor(((ComposeableAdapterFactory)adapterFactory).getRootAdapterFactory(), getResourceLocator(),
        getString("_UI_Model_allPackages_feature"), getString("_UI_PropertyDescriptor_description", "_UI_Model_allPackages_feature", "_UI_Model_type"),
        EvolutionPackage.Literals.MODEL__ALL_PACKAGES, false, false, false, null, null, null));
  }

  /**
   * This adds a property descriptor for the Referenced Packages feature.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  protected void addReferencedPackagesPropertyDescriptor(Object object)
  {
    itemPropertyDescriptors.add(createItemPropertyDescriptor(((ComposeableAdapterFactory)adapterFactory).getRootAdapterFactory(), getResourceLocator(),
        getString("_UI_Model_referencedPackages_feature"),
        getString("_UI_PropertyDescriptor_description", "_UI_Model_referencedPackages_feature", "_UI_Model_type"),
        EvolutionPackage.Literals.MODEL__REFERENCED_PACKAGES, false, false, false, null, null, null));
  }

  /**
   * This adds a property descriptor for the Missing Packages feature.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  protected void addMissingPackagesPropertyDescriptor(Object object)
  {
    itemPropertyDescriptors.add(createItemPropertyDescriptor(((ComposeableAdapterFactory)adapterFactory).getRootAdapterFactory(), getResourceLocator(),
        getString("_UI_Model_missingPackages_feature"), getString("_UI_PropertyDescriptor_description", "_UI_Model_missingPackages_feature", "_UI_Model_type"),
        EvolutionPackage.Literals.MODEL__MISSING_PACKAGES, false, false, false, null, 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(EvolutionPackage.Literals.MODEL__ROOT_PACKAGE);
    }
    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);
  }

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public boolean hasChildren(Object object)
  {
    return hasChildren(object, true);
  }

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

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  protected boolean shouldComposeCreationImage()
  {
    return true;
  }

  /**
   * This returns the label text for the adapted class.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public String getText(Object object)
  {
    return ((StyledString)getStyledText(object)).getString();
  }

  /**
   * This returns the label styled text for the adapted class.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public Object getStyledText(Object object)
  {
    URI labelValue = ((Model)object).getURI();
    String label = labelValue == null ? null : labelValue.toString();
    StyledString styledLabel = new StyledString();
    if (label == null || label.length() == 0)
    {
      styledLabel.append(getString("_UI_Model_type"), StyledString.Style.QUALIFIER_STYLER);
    }
    else
    {
      styledLabel.append(getString("_UI_Model_type"), StyledString.Style.QUALIFIER_STYLER).append(" " + label);
    }
    return styledLabel;
  }

  /**
   * 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(Model.class))
    {
    case EvolutionPackage.MODEL__URI:
    case EvolutionPackage.MODEL__ALL_PACKAGES:
    case EvolutionPackage.MODEL__REFERENCED_PACKAGES:
    case EvolutionPackage.MODEL__MISSING_PACKAGES:
      fireNotifyChanged(new ViewerNotification(notification, notification.getNotifier(), false, true));
      return;
    case EvolutionPackage.MODEL__ROOT_PACKAGE:
      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);
  }

  /**
   * Return the resource locator for this item provider's resources.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public ResourceLocator getResourceLocator()
  {
    return ((IChildCreationExtender)adapterFactory).getResourceLocator();
  }

  @Override
  public Command createCommand(Object owner, EditingDomain domain, Class<? extends Command> commandClass, CommandParameter commandParameter)
  {
    if (commandClass == DragAndDropCommand.class)
    {
      // DragAndDropCommand.Detail detail = (DragAndDropCommand.Detail)commandParameter.getFeature();
      Collection<?> collection = commandParameter.getCollection();
      if (domain != null && collection.size() == 1 && commandParameter.getOwner() != domain.getResourceSet())
      {
        Object element = collection.iterator().next();
        if (element instanceof URI)
        {
          URI uri = (URI)element;
          return SetCommand.create(domain, owner, EvolutionPackage.Literals.MODEL__URI, uri);
        }

        // return createDragAndDropCommand(domain, commandParameter.getOwner(), detail.location, detail.operations,
        // detail.operation,
        // commandParameter.getCollection());
      }
    }

    return super.createCommand(owner, domain, commandClass, commandParameter);
  }

  @Override
  protected boolean isWrappingNeeded(Object object)
  {
    // Wrapping is always needed because of the derived cross reference 'rootPackage', which is shown as children.
    return true;
  }

}