org.opensingular.lib.wicket.util.datatable.column.BSTreeColumn.java Source code

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Here is the source code for org.opensingular.lib.wicket.util.datatable.column.BSTreeColumn.java

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/*
 * Copyright (C) 2016 Singular Studios (a.k.a Atom Tecnologia) - www.opensingular.com
 *
 * Licensed 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.opensingular.lib.wicket.util.datatable.column;

import static org.opensingular.lib.wicket.util.util.WicketUtils.$m;

import java.io.Serializable;

import org.apache.wicket.Component;
import org.apache.wicket.extensions.markup.html.repeater.data.grid.ICellPopulator;
import org.apache.wicket.extensions.markup.html.repeater.tree.Node;
import org.apache.wicket.extensions.markup.html.repeater.tree.content.Folder;
import org.apache.wicket.extensions.markup.html.repeater.tree.table.AbstractTreeColumn;
import org.apache.wicket.extensions.markup.html.repeater.tree.table.NodeBorder;
import org.apache.wicket.extensions.markup.html.repeater.tree.table.NodeModel;
import org.apache.wicket.markup.repeater.Item;
import org.apache.wicket.model.IModel;

import org.opensingular.lib.commons.lambda.IFunction;

public class BSTreeColumn<T, S> extends AbstractTreeColumn<T, S> {

    public interface NodeComponentFactory<T> extends Serializable {
        Component newNodeComponent(String componentId, IModel<T> model);
    }

    private IFunction<T, ?> contentLabelFunction = it -> it;

    public BSTreeColumn(IModel<String> displayModel) {
        super(displayModel);
    }

    public BSTreeColumn(IModel<String> displayModel, S sortProperty) {
        super(displayModel, sortProperty);
    }

    public BSTreeColumn<T, S> setContentLabelFunction(IFunction<T, ?> contentLabelFunction) {
        this.contentLabelFunction = (contentLabelFunction != null) ? contentLabelFunction : m -> m;
        return this;
    }

    @Override
    public String getCssClass() {
        return "tree";
    }

    @Override
    public void populateItem(Item<ICellPopulator<T>> cellItem, String componentId, IModel<T> rowModel) {
        NodeModel<T> nodeModel = (NodeModel<T>) rowModel;

        Component nodeComponent = newNodeComponent(componentId, nodeModel.getWrappedModel());

        nodeComponent.add(new NodeBorder(nodeModel.getBranches()));

        cellItem.add(nodeComponent);
    }

    protected Component newNodeComponent(String componentId, IModel<T> model) {
        return new Node<T>(componentId, getTree(), model) {
            @Override
            protected Component createContent(String id, IModel<T> model) {
                return BSTreeColumn.this.newContentComponent(id, model);
            }
        };
    }

    protected Component newContentComponent(String componentId, IModel<T> model) {
        return new Folder<T>(componentId, getTree(), model) {
            @Override
            protected IModel<?> newLabelModel(IModel<T> model) {
                return $m.map(model, contentLabelFunction);
            }
        };
    }
}