/*
 * Copyright (c) 2014, 2015 Eike Stepper (Berlin, Germany) and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Eike Stepper - initial API and implementation
 */
package org.eclipse.oomph.predicates.provider;

import org.eclipse.oomph.predicates.NamePredicate;
import org.eclipse.oomph.predicates.PredicatesPackage;

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.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
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.IItemPropertyDescriptor;
import org.eclipse.emf.edit.provider.ItemPropertyDescriptor;
import org.eclipse.emf.edit.provider.ViewerNotification;

import org.eclipse.core.resources.IProject;

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

/**
 * This is the item provider adapter for a {@link org.eclipse.oomph.predicates.NamePredicate} object.
 * <!-- begin-user-doc -->
 * <!-- end-user-doc -->
 * @generated
 */
public class NamePredicateItemProvider extends PredicateItemProvider
{
  /**
   * This constructs an instance from a factory and a notifier.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  public NamePredicateItemProvider(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);

      addPatternPropertyDescriptor(object);
    }
    return itemPropertyDescriptors;
  }

  /**
   * This adds a property descriptor for the Pattern feature.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  protected void addPatternPropertyDescriptor(Object object)
  {
    itemPropertyDescriptors.add(createItemPropertyDescriptor(((ComposeableAdapterFactory)adapterFactory).getRootAdapterFactory(), getResourceLocator(),
        getString("_UI_NamePredicate_pattern_feature"), getString("_UI_NamePredicate_pattern_description"), PredicatesPackage.Literals.NAME_PREDICATE__PATTERN,
        true, false, false, ItemPropertyDescriptor.GENERIC_VALUE_IMAGE, null, null));
  }

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

  /**
   * <!-- 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 NOT
   */
  @Override
  public String getText(Object object)
  {
    String label = ((NamePredicate)object).getPattern();
    return label == null || label.length() == 0 ? getString("_UI_NamePredicate_type") : "Name matches " + 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(NamePredicate.class))
    {
      case PredicatesPackage.NAME_PREDICATE__PATTERN:
        fireNotifyChanged(new ViewerNotification(notification, notification.getNotifier(), false, true));
        return;
    }
    super.notifyChanged(notification);
  }

  @Override
  protected Command createPrimaryDragAndDropCommand(EditingDomain domain, Object owner, float location, int operations, int operation, Collection<?> collection)
  {
    return new BaseDragAndDropCommand(domain, owner, location, operations, operation, collection)
    {
      @Override
      protected boolean analyzeForNonContainment(Command command)
      {
        return true;
      }
    };
  }

  @Override
  protected Command createSetCommand(EditingDomain domain, EObject owner, EStructuralFeature feature, Object value)
  {
    if (feature == null)
    {
      if (value instanceof Collection<?>)
      {
        NamePredicate namePredicate = (NamePredicate)owner;
        String pattern = namePredicate.getPattern();
        StringBuilder projectPattern = new StringBuilder();
        if (pattern != null)
        {
          projectPattern.append(pattern);
        }

        boolean hasNonProject = false;
        for (Object item : (Collection<?>)value)
        {
          if (item instanceof IProject)
          {
            IProject project = (IProject)item;
            String name = project.getName();
            if (projectPattern.length() != 0)
            {
              projectPattern.append('|');
            }
            projectPattern.append(name.replaceAll("\\.", "\\\\."));
          }
          else
          {
            hasNonProject = true;
            break;
          }
        }

        if (!hasNonProject)
        {
          return new SetCommand(domain, owner, PredicatesPackage.Literals.NAME_PREDICATE__PATTERN, projectPattern.toString());

        }
      }
    }
    return super.createSetCommand(domain, owner, feature, value);
  }

  /**
   * 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);
  }

}