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    /*
 * 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 com.jfoenix.skins.JFXListViewSkin;
import javafx.beans.property.*;
import javafx.collections.FXCollections;
import javafx.collections.ListChangeListener;
import javafx.collections.ObservableList;
import javafx.css.*;
import javafx.css.converter.BooleanConverter;
import javafx.css.converter.SizeConverter;
import javafx.event.Event;
import javafx.scene.Node;
import javafx.scene.control.Control;
import javafx.scene.control.Label;
import javafx.scene.control.ListView;
import javafx.scene.control.Skin;
import javafx.scene.input.ContextMenuEvent;
import javafx.scene.input.MouseEvent;

import java.util.*;

/**
 * Material design implementation of List View
 *
 * @author Shadi Shaheen
 * @version 1.0
 * @since 2016-03-09
 */
public class JFXListView extends ListView {

    /**
     * {@inheritDoc}
     */
    public JFXListView() {
        this.setCellFactory(listView -> new JFXListCell<>());
        initialize();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected Skin createDefaultSkin() {
        return new JFXListViewSkin<>(this);
    }

    private ObjectProperty depthProperty = new SimpleObjectProperty<>(0);

    public ObjectProperty depthProperty() {
        return depthProperty;
    }

    public int getDepth() {
        return depthProperty.get();
    }

    public void setDepth(int depth) {
        depthProperty.set(depth);
    }

    private ReadOnlyDoubleWrapper currentVerticalGapProperty = new ReadOnlyDoubleWrapper();

    ReadOnlyDoubleProperty currentVerticalGapProperty() {
        return currentVerticalGapProperty.getReadOnlyProperty();
    }

    private void expand() {
        currentVerticalGapProperty.set(verticalGap.get());
    }

    private void collapse() {
        currentVerticalGapProperty.set(0);
    }

    /*
     * this only works if the items were labels / strings
     */
    private BooleanProperty showTooltip = new SimpleBooleanProperty(false);

    public final BooleanProperty showTooltipProperty() {
        return this.showTooltip;
    }

    public final boolean isShowTooltip() {
        return this.showTooltipProperty().get();
    }

    public final void setShowTooltip(final boolean showTooltip) {
        this.showTooltipProperty().set(showTooltip);
    }

    /***************************************************************************
     *                                                                         *
     * SubList Properties                                                      *
     *                                                                         *
     **************************************************************************/

    @Deprecated
    private ObjectProperty groupnode = new SimpleObjectProperty<>(new Label("GROUP"));

    @Deprecated
    public Node getGroupnode() {
        return groupnode.get();
    }

    @Deprecated
    public void setGroupnode(Node node) {
        this.groupnode.set(node);
    }

    /*
     *  selected index property that includes the sublists
     */
    @Deprecated
    private ReadOnlyObjectWrapper overAllIndexProperty = new ReadOnlyObjectWrapper<>(-1);

    @Deprecated
    public ReadOnlyObjectProperty overAllIndexProperty() {
        return overAllIndexProperty.getReadOnlyProperty();
    }

    // private sublists property
    @Deprecated
    private ObjectProperty>> sublistsProperty = new SimpleObjectProperty<>(
        FXCollections.observableArrayList());
    @Deprecated
    private LinkedHashMap> sublistsIndices = new LinkedHashMap<>();

    // this method shouldn't be called from user
    @Deprecated
    void addSublist(JFXListView subList, int index) {
        if (!sublistsProperty.get().contains(subList)) {
            sublistsProperty.get().add(subList);
            sublistsIndices.put(index, subList);
            subList.getSelectionModel().selectedIndexProperty().addListener((o, oldVal, newVal) -> {
                if (newVal.intValue() != -1) {
                    updateOverAllSelectedIndex();
                }
            });
        }
    }

    private void updateOverAllSelectedIndex() {
        // if item from the list is selected
        if (this.getSelectionModel().getSelectedIndex() != -1) {
            int selectedIndex = this.getSelectionModel().getSelectedIndex();
            Iterator>> itr = sublistsIndices.entrySet().iterator();
            int preItemsSize = 0;
            while (itr.hasNext()) {
                Map.Entry> entry = itr.next();
                if (entry.getKey() < selectedIndex) {
                    preItemsSize += entry.getValue().getItems().size() - 1;
                }
            }
            overAllIndexProperty.set(selectedIndex + preItemsSize);
        } else {
            Iterator>> itr = sublistsIndices.entrySet().iterator();
            ArrayList selectedList = new ArrayList<>();
            while (itr.hasNext()) {
                Map.Entry> entry = itr.next();
                if (entry.getValue().getSelectionModel().getSelectedIndex() != -1) {
                    selectedList.add(entry.getKey());
                }
            }
            if (selectedList.size() > 0) {
                itr = sublistsIndices.entrySet().iterator();
                int preItemsSize = 0;
                while (itr.hasNext()) {
                    Map.Entry> entry = itr.next();
                    if (entry.getKey() < ((Integer) selectedList.get(0))) {
                        preItemsSize += entry.getValue().getItems().size() - 1;
                    }
                }
                overAllIndexProperty.set(preItemsSize + (Integer) selectedList.get(0) + sublistsIndices.get(selectedList
                    .get(0))
                    .getSelectionModel()
                    .getSelectedIndex());
            } else {
                overAllIndexProperty.set(-1);
            }
        }
    }


    /***************************************************************************
     *                                                                         *
     * Stylesheet Handling                                                     *
     *                                                                         *
     **************************************************************************/

    /**
     * Initialize the style class to 'jfx-list-view'.
     * 
    
     * This is the selector class from which CSS can be used to style
     * this control.
     */
    private static final String DEFAULT_STYLE_CLASS = "jfx-list-view";

    private void initialize() {
        this.getStyleClass().add(DEFAULT_STYLE_CLASS);
        expanded.addListener((o, oldVal, newVal) -> {
            if (newVal) {
                expand();
            } else {
                collapse();
            }
        });

        verticalGap.addListener((o, oldVal, newVal) -> {
            if (isExpanded()) {
                expand();
            } else {
                collapse();
            }
        });

        // handle selection model on the list ( FOR NOW : we only support single selection on the list if it contains sublists)
        sublistsProperty.get().addListener((ListChangeListener.Change> c) -> {
            while (c.next()) {
                if (c.wasAdded() || c.wasUpdated() || c.wasReplaced()) {
                    if (sublistsProperty.get().size() == 1) {
                        this.getSelectionModel()
                            .selectedItemProperty()
                            .addListener((o, oldVal, newVal) -> clearSelection(this));
                        // prevent selecting the sublist item by clicking the right mouse button
                        this.addEventFilter(ContextMenuEvent.CONTEXT_MENU_REQUESTED, Event::consume);
                    }
                    c.getAddedSubList()
                        .forEach(item -> item.getSelectionModel()
                            .selectedItemProperty()
                            .addListener((o, oldVal, newVal) -> clearSelection(item)));
                }
            }
        });

        // listen to index changes
        this.getSelectionModel().selectedIndexProperty().addListener((o, oldVal, newVal) -> {
            if (newVal.intValue() != -1) {
                updateOverAllSelectedIndex();
            }
        });
    }


    // allow single selection across the list and all sublits
    private boolean allowClear = true;

    private void clearSelection(JFXListView selectedList) {
        if (allowClear) {
            allowClear = false;
            if (this != selectedList) {
                this.getSelectionModel().clearSelection();
            }
            for (int i = 0; i < sublistsProperty.get().size(); i++) {
                if (sublistsProperty.get().get(i) != selectedList) {
                    sublistsProperty.get().get(i).getSelectionModel().clearSelection();
                }
            }
            allowClear = true;
        }
    }

    /**
     * propagate mouse events to the parent node ( e.g. to allow dragging while clicking on the list)
     */
    public void propagateMouseEventsToParent() {
        this.addEventHandler(MouseEvent.ANY, e -> {
            e.consume();
            this.getParent().fireEvent(e);
        });
    }

    private StyleableDoubleProperty verticalGap = new SimpleStyleableDoubleProperty(StyleableProperties.VERTICAL_GAP,
        JFXListView.this,
        "verticalGap",
        0.0);

    public Double getVerticalGap() {
        return verticalGap == null ? 0 : verticalGap.get();
    }

    public StyleableDoubleProperty verticalGapProperty() {
        return this.verticalGap;
    }

    public void setVerticalGap(Double gap) {
        this.verticalGap.set(gap);
    }

    private StyleableBooleanProperty expanded = new SimpleStyleableBooleanProperty(StyleableProperties.EXPANDED,
        JFXListView.this,
        "expanded",
        false);

    public Boolean isExpanded() {
        return expanded != null && expanded.get();
    }

    public StyleableBooleanProperty expandedProperty() {
        return this.expanded;
    }

    public void setExpanded(Boolean expanded) {
        this.expanded.set(expanded);
    }

    private static class StyleableProperties {
        private static final CssMetaData, Number> VERTICAL_GAP =
            new CssMetaData, Number>("-jfx-vertical-gap",
                SizeConverter.getInstance(), 0) {
                @Override
                public boolean isSettable(JFXListView control) {
                    return control.verticalGap == null || !control.verticalGap.isBound();
                }

                @Override
                public StyleableDoubleProperty getStyleableProperty(JFXListView control) {
                    return control.verticalGapProperty();
                }
            };
        private static final CssMetaData, Boolean> EXPANDED =
            new CssMetaData, Boolean>("-jfx-expanded",
                BooleanConverter.getInstance(), false) {
                @Override
                public boolean isSettable(JFXListView control) {
                    // it's only settable if the List is not shown yet
                    return control.getHeight() == 0 && (control.expanded == null || !control.expanded.isBound());
                }

                @Override
                public StyleableBooleanProperty getStyleableProperty(JFXListView control) {
                    return control.expandedProperty();
                }
            };
        private static final List> CHILD_STYLEABLES;

        static {
            final List> styleables =
                new ArrayList<>(Control.getClassCssMetaData());
            Collections.addAll(styleables,
                VERTICAL_GAP,
                EXPANDED
            );
            CHILD_STYLEABLES = Collections.unmodifiableList(styleables);
        }
    }

    // inherit the styleable properties from parent
    private List> STYLEABLES;

    @Override
    public List> getControlCssMetaData() {
        if (STYLEABLES == null) {
            final List> styleables =
                new ArrayList<>(Control.getClassCssMetaData());
            styleables.addAll(getClassCssMetaData());
            styleables.addAll(ListView.getClassCssMetaData());
            STYLEABLES = Collections.unmodifiableList(styleables);
        }
        return STYLEABLES;
    }

    public static List> getClassCssMetaData() {
        return StyleableProperties.CHILD_STYLEABLES;
    }

}
    
    
    
    

    




    
    
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