/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.isis.viewer.dnd.icon;
import org.apache.isis.viewer.dnd.view.Axes;
import org.apache.isis.viewer.dnd.view.Content;
import org.apache.isis.viewer.dnd.view.View;
import org.apache.isis.viewer.dnd.view.ViewFactory;
import org.apache.isis.viewer.dnd.view.ViewSpecification;
import org.apache.isis.viewer.dnd.view.base.BlankView;
public class IconElementFactory implements ViewFactory {
private final ViewSpecification objectSpec;
private final ViewSpecification collectionSpec;
private final boolean createViewsForEmptyContent;
public IconElementFactory() {
this(null, null, false);
}
public IconElementFactory(final ViewSpecification objectSpec, final ViewSpecification collectionSpec, final boolean createViewsForEmptyContent) {
this.objectSpec = this.objectSpec == null ? new SubviewIconSpecification() : objectSpec;
this.collectionSpec = this.collectionSpec == null ? new SubviewIconSpecification() : collectionSpec;
this.createViewsForEmptyContent = createViewsForEmptyContent;
}
@Override
public View createView(final Content content, final Axes axes, final int sequence) {
if (content.isObject()) {
if (content.getAdapter() == null) {
return createViewsForEmptyContent ? new BlankView(content) : null;
} else {
return objectSpec.createView(content, axes, -1);
}
} else if (content.isCollection()) {
return collectionSpec.createView(content, axes, -1);
} else {
// TODO decide what to do with values: use factory, use another
// SubviewSpec, or ignore always
return null;
}
}
}