/**
 *  Copyright (c) 2018 Obeo.
 *  This program and the accompanying materials
 *  are made available under the terms of the Eclipse Public License v2.0
 *  which accompanies this distribution, and is available at
 *  https://www.eclipse.org/legal/epl-2.0/
 *
 *  Contributors:
 *     Obeo - initial API and implementation
 *
 */
package org.eclipse.sirius.workflow.provider;

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

import org.eclipse.emf.common.notify.Adapter;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.notify.Notifier;
import org.eclipse.emf.common.util.ResourceLocator;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.edit.command.CommandParameter;
import org.eclipse.emf.edit.domain.EditingDomain;
import org.eclipse.emf.edit.provider.ChangeNotifier;
import org.eclipse.emf.edit.provider.ChildCreationExtenderManager;
import org.eclipse.emf.edit.provider.ComposeableAdapterFactory;
import org.eclipse.emf.edit.provider.ComposedAdapterFactory;
import org.eclipse.emf.edit.provider.IChangeNotifier;
import org.eclipse.emf.edit.provider.IChildCreationExtender;
import org.eclipse.emf.edit.provider.IDisposable;
import org.eclipse.emf.edit.provider.IEditingDomainItemProvider;
import org.eclipse.emf.edit.provider.IItemLabelProvider;
import org.eclipse.emf.edit.provider.IItemPropertySource;
import org.eclipse.emf.edit.provider.IItemStyledLabelProvider;
import org.eclipse.emf.edit.provider.INotifyChangedListener;
import org.eclipse.emf.edit.provider.IStructuredItemContentProvider;
import org.eclipse.emf.edit.provider.ITreeItemContentProvider;
import org.eclipse.sirius.viewpoint.description.DescriptionPackage;
import org.eclipse.sirius.viewpoint.description.Group;
import org.eclipse.sirius.viewpoint.description.util.DescriptionSwitch;
import org.eclipse.sirius.workflow.WorkflowFactory;
import org.eclipse.sirius.workflow.WorkflowPackage;
import org.eclipse.sirius.workflow.edit.WorkflowEditPlugin;
import org.eclipse.sirius.workflow.util.WorkflowAdapterFactory;

/**
 * This is the factory that is used to provide the interfaces needed to support Viewers. The adapters generated by this
 * factory convert EMF adapter notifications into calls to {@link #fireNotifyChanged fireNotifyChanged}. The adapters
 * also support Eclipse property sheets. Note that most of the adapters are shared among multiple instances. <!--
 * begin-user-doc --> <!-- end-user-doc -->
 *
 * @generated
 */
public class WorkflowItemProviderAdapterFactory extends WorkflowAdapterFactory implements ComposeableAdapterFactory, IChangeNotifier, IDisposable, IChildCreationExtender {
    /**
     * This keeps track of the root adapter factory that delegates to this adapter factory. <!-- begin-user-doc --> <!--
     * end-user-doc -->
     *
     * @generated
     */
    protected ComposedAdapterFactory parentAdapterFactory;

    /**
     * This is used to implement {@link org.eclipse.emf.edit.provider.IChangeNotifier}. <!-- begin-user-doc --> <!--
     * end-user-doc -->
     *
     * @generated
     */
    protected IChangeNotifier changeNotifier = new ChangeNotifier();

    /**
     * This helps manage the child creation extenders. <!-- begin-user-doc --> <!-- end-user-doc -->
     *
     * @generated
     */
    protected ChildCreationExtenderManager childCreationExtenderManager = new ChildCreationExtenderManager(WorkflowEditPlugin.INSTANCE, WorkflowPackage.eNS_URI);

    /**
     * This keeps track of all the supported types checked by {@link #isFactoryForType isFactoryForType}. <!--
     * begin-user-doc --> <!-- end-user-doc -->
     *
     * @generated
     */
    protected Collection<Object> supportedTypes = new ArrayList<Object>();

    /**
     * This constructs an instance. <!-- begin-user-doc --> <!-- end-user-doc -->
     *
     * @generated
     */
    public WorkflowItemProviderAdapterFactory() {
        supportedTypes.add(IEditingDomainItemProvider.class);
        supportedTypes.add(IStructuredItemContentProvider.class);
        supportedTypes.add(ITreeItemContentProvider.class);
        supportedTypes.add(IItemLabelProvider.class);
        supportedTypes.add(IItemPropertySource.class);
        supportedTypes.add(IItemStyledLabelProvider.class);
    }

    /**
     * This keeps track of the one adapter used for all {@link org.eclipse.sirius.workflow.WorkflowDescription}
     * instances. <!-- begin-user-doc --> <!-- end-user-doc -->
     *
     * @generated
     */
    protected WorkflowDescriptionItemProvider workflowDescriptionItemProvider;

    /**
     * This creates an adapter for a {@link org.eclipse.sirius.workflow.WorkflowDescription}. <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     *
     * @generated
     */
    @Override
    public Adapter createWorkflowDescriptionAdapter() {
        if (workflowDescriptionItemProvider == null) {
            workflowDescriptionItemProvider = new WorkflowDescriptionItemProvider(this);
        }

        return workflowDescriptionItemProvider;
    }

    /**
     * This keeps track of the one adapter used for all {@link org.eclipse.sirius.workflow.PageDescription} instances.
     * <!-- begin-user-doc --> <!-- end-user-doc -->
     *
     * @generated
     */
    protected PageDescriptionItemProvider pageDescriptionItemProvider;

    /**
     * This creates an adapter for a {@link org.eclipse.sirius.workflow.PageDescription}. <!-- begin-user-doc --> <!--
     * end-user-doc -->
     *
     * @generated
     */
    @Override
    public Adapter createPageDescriptionAdapter() {
        if (pageDescriptionItemProvider == null) {
            pageDescriptionItemProvider = new PageDescriptionItemProvider(this);
        }

        return pageDescriptionItemProvider;
    }

    /**
     * This keeps track of the one adapter used for all {@link org.eclipse.sirius.workflow.SectionDescription}
     * instances. <!-- begin-user-doc --> <!-- end-user-doc -->
     *
     * @generated
     */
    protected SectionDescriptionItemProvider sectionDescriptionItemProvider;

    /**
     * This creates an adapter for a {@link org.eclipse.sirius.workflow.SectionDescription}. <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     *
     * @generated
     */
    @Override
    public Adapter createSectionDescriptionAdapter() {
        if (sectionDescriptionItemProvider == null) {
            sectionDescriptionItemProvider = new SectionDescriptionItemProvider(this);
        }

        return sectionDescriptionItemProvider;
    }

    /**
     * This keeps track of the one adapter used for all {@link org.eclipse.sirius.workflow.ActivityDescription}
     * instances. <!-- begin-user-doc --> <!-- end-user-doc -->
     *
     * @generated
     */
    protected ActivityDescriptionItemProvider activityDescriptionItemProvider;

    /**
     * This creates an adapter for a {@link org.eclipse.sirius.workflow.ActivityDescription}. <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     *
     * @generated
     */
    @Override
    public Adapter createActivityDescriptionAdapter() {
        if (activityDescriptionItemProvider == null) {
            activityDescriptionItemProvider = new ActivityDescriptionItemProvider(this);
        }

        return activityDescriptionItemProvider;
    }

    /**
     * This returns the root adapter factory that contains this factory. <!-- begin-user-doc --> <!-- end-user-doc -->
     *
     * @generated
     */
    @Override
    public ComposeableAdapterFactory getRootAdapterFactory() {
        return parentAdapterFactory == null ? this : parentAdapterFactory.getRootAdapterFactory();
    }

    /**
     * This sets the composed adapter factory that contains this factory. <!-- begin-user-doc --> <!-- end-user-doc -->
     *
     * @generated
     */
    @Override
    public void setParentAdapterFactory(ComposedAdapterFactory parentAdapterFactory) {
        this.parentAdapterFactory = parentAdapterFactory;
    }

    /**
     * <!-- begin-user-doc --> <!-- end-user-doc -->
     *
     * @generated
     */
    @Override
    public boolean isFactoryForType(Object type) {
        return supportedTypes.contains(type) || super.isFactoryForType(type);
    }

    /**
     * This implementation substitutes the factory itself as the key for the adapter. <!-- begin-user-doc --> <!--
     * end-user-doc -->
     *
     * @generated
     */
    @Override
    public Adapter adapt(Notifier notifier, Object type) {
        return super.adapt(notifier, this);
    }

    /**
     * <!-- begin-user-doc --> <!-- end-user-doc -->
     *
     * @generated
     */
    @Override
    public Object adapt(Object object, Object type) {
        if (isFactoryForType(type)) {
            Object adapter = super.adapt(object, type);
            if (!(type instanceof Class<?>) || (((Class<?>) type).isInstance(adapter))) {
                return adapter;
            }
        }

        return null;
    }

    /**
     * <!-- begin-user-doc --> <!-- end-user-doc -->
     *
     * @generated
     */
    public List<IChildCreationExtender> getChildCreationExtenders() {
        return childCreationExtenderManager.getChildCreationExtenders();
    }

    /**
     * <!-- begin-user-doc --> <!-- end-user-doc -->
     *
     * @generated
     */
    @Override
    public Collection<?> getNewChildDescriptors(Object object, EditingDomain editingDomain) {
        return childCreationExtenderManager.getNewChildDescriptors(object, editingDomain);
    }

    /**
     * <!-- begin-user-doc --> <!-- end-user-doc -->
     *
     * @generated
     */
    @Override
    public ResourceLocator getResourceLocator() {
        return childCreationExtenderManager;
    }

    /**
     * This adds a listener. <!-- begin-user-doc --> <!-- end-user-doc -->
     *
     * @generated
     */
    @Override
    public void addListener(INotifyChangedListener notifyChangedListener) {
        changeNotifier.addListener(notifyChangedListener);
    }

    /**
     * This removes a listener. <!-- begin-user-doc --> <!-- end-user-doc -->
     *
     * @generated
     */
    @Override
    public void removeListener(INotifyChangedListener notifyChangedListener) {
        changeNotifier.removeListener(notifyChangedListener);
    }

    /**
     * This delegates to {@link #changeNotifier} and to {@link #parentAdapterFactory}. <!-- begin-user-doc --> <!--
     * end-user-doc -->
     *
     * @generated
     */
    @Override
    public void fireNotifyChanged(Notification notification) {
        changeNotifier.fireNotifyChanged(notification);

        if (parentAdapterFactory != null) {
            parentAdapterFactory.fireNotifyChanged(notification);
        }
    }

    /**
     * This disposes all of the item providers created by this factory. <!-- begin-user-doc --> <!-- end-user-doc -->
     *
     * @generated
     */
    @Override
    public void dispose() {
        if (workflowDescriptionItemProvider != null) {
            workflowDescriptionItemProvider.dispose();
        }
        if (pageDescriptionItemProvider != null) {
            pageDescriptionItemProvider.dispose();
        }
        if (sectionDescriptionItemProvider != null) {
            sectionDescriptionItemProvider.dispose();
        }
        if (activityDescriptionItemProvider != null) {
            activityDescriptionItemProvider.dispose();
        }
    }

    /**
     * A child creation extender for the {@link DescriptionPackage}. <!-- begin-user-doc --> <!-- end-user-doc -->
     *
     * @generated
     */
    public static class DescriptionChildCreationExtender implements IChildCreationExtender {
        /**
         * The switch for creating child descriptors specific to each extended class. <!-- begin-user-doc --> <!--
         * end-user-doc -->
         *
         * @generated
         */
        protected static class CreationSwitch extends DescriptionSwitch<Object> {
            /**
             * The child descriptors being populated. <!-- begin-user-doc --> <!-- end-user-doc -->
             *
             * @generated
             */
            protected List<Object> newChildDescriptors;

            /**
             * The domain in which to create the children. <!-- begin-user-doc --> <!-- end-user-doc -->
             *
             * @generated
             */
            protected EditingDomain editingDomain;

            /**
             * Creates the a switch for populating child descriptors in the given domain. <!-- begin-user-doc --> <!--
             * end-user-doc -->
             *
             * @generated
             */
            CreationSwitch(List<Object> newChildDescriptors, EditingDomain editingDomain) {
                this.newChildDescriptors = newChildDescriptors;
                this.editingDomain = editingDomain;
            }

            /**
             * <!-- begin-user-doc --> <!-- end-user-doc -->
             *
             * @generated
             */
            @Override
            public Object caseGroup(Group object) {
                newChildDescriptors.add(createChildParameter(DescriptionPackage.Literals.GROUP__EXTENSIONS, WorkflowFactory.eINSTANCE.createWorkflowDescription()));

                return null;
            }

            /**
             * <!-- begin-user-doc --> <!-- end-user-doc -->
             *
             * @generated
             */
            protected CommandParameter createChildParameter(Object feature, Object child) {
                return new CommandParameter(null, feature, child);
            }

        }

        /**
         * <!-- begin-user-doc --> <!-- end-user-doc -->
         *
         * @generated
         */
        @Override
        public Collection<Object> getNewChildDescriptors(Object object, EditingDomain editingDomain) {
            ArrayList<Object> result = new ArrayList<Object>();
            new CreationSwitch(result, editingDomain).doSwitch((EObject) object);
            return result;
        }

        /**
         * <!-- begin-user-doc --> <!-- end-user-doc -->
         *
         * @generated
         */
        @Override
        public ResourceLocator getResourceLocator() {
            return WorkflowEditPlugin.INSTANCE;
        }
    }

}