JFXTreeView.java

/*
 * 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 com.jfoenix.controls;

import javafx.animation.Animation;
import javafx.animation.ParallelTransition;
import javafx.scene.control.TreeItem;
import javafx.scene.control.TreeView;

import java.util.HashMap;

/**
 * JFXTreeView is the material design implementation of a TreeView
 * with expand/collapse animation and selection indicator.
 *
 * @author Shadi Shaheen
 * @version 1.0
 * @since 2017-02-15
 */
public class JFXTreeView<T> extends TreeView<T> {

    public JFXTreeView() {
        init();
    }

    public JFXTreeView(TreeItem<T> root) {
        super(root);
        init();
    }

    private void init() {
        this.setCellFactory((view) -> new JFXTreeCell<>());
    }

    double height = 0;
    int animateRow = -1;
    int sibRow = -1;
    double layoutY = -1;
    boolean expand = false;
    boolean disableSiblings = false;
    ParallelTransition trans = new ParallelTransition();
    HashMap<Integer, CellAnimation> sibAnimationMap = new HashMap<>();
    HashMap<Integer, CellAnimation> childrenAnimationMap = new HashMap<>();

    void clearAnimation() {
        this.trans.stop();
        this.trans.getChildren().clear();
        this.sibAnimationMap.clear();
        this.childrenAnimationMap.clear();
        this.height = 0;
        this.sibRow = -1;
    }

    static class CellAnimation {
        JFXTreeCell<?> cell;
        Animation animation;

        public CellAnimation(JFXTreeCell<?> cell, Animation animation) {
            this.cell = cell;
            this.animation = animation;
        }

        public JFXTreeCell<?> getCell() {
            return cell;
        }

        public Animation getAnimation() {
            return animation;
        }
    }
}