package de.synolo.lib.fw.utils;

import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.control.MultipleSelectionModel;

public class MultipleSelectionModelWrapper<T> extends MultipleSelectionModel<T>{

	private ObservableList<T> items;
	private ObservableList<Integer> indices = FXCollections.observableArrayList();
	private ObservableList<T> selectedItems = FXCollections.observableArrayList();
	
 	public MultipleSelectionModelWrapper(ObservableList<T> list) {
 		this.items = list;
	}
	
	@Override
	public ObservableList<Integer> getSelectedIndices() { return this.indices; }
	
	@Override
	public ObservableList<T> getSelectedItems() { return this.selectedItems; }
	
	@Override
	public void selectIndices(int index, int... indices) {
		select(index);
		for(int idx : indices)
			select(idx);
		
	}
	@Override
	public void selectAll() {
		clearSelection();
		for(int i = 0; i < this.items.size(); i++) {
			this.selectedItems.add(this.items.get(i));
			this.indices.add(i);
		}
	}
	
	@Override
	public void selectFirst() {
		clearSelection();
		select(0);
	}
	@Override
	public void selectLast() {
		clearSelection();
		select(this.items.size()-1);
	}
	@Override
	public void clearAndSelect(int index) {
		clearSelection();
		select(index);
	}
	@Override
	public void select(int index) {
		if(index < this.items.size() && index >= 0) {
			T item = this.items.get(index);
			if(!this.selectedItems.contains(item)) {
				this.selectedItems.add(item);
				this.indices.add(index);
			}
		}
	}
	@Override
	public void select(T obj) {
		if(this.items.contains(obj) && !this.selectedItems.contains(obj)) {
			int index = this.items.indexOf(obj);
			this.selectedItems.add(obj);
			this.indices.add(index);
		}
	}
	
	@Override
	public void clearSelection(int index) {
		if(this.indices.contains(index)) {
			T item = this.items.get(index);
			this.selectedItems.remove(item);
			this.indices.remove(index);
		}
		
	}
	@Override
	public void clearSelection() {
		this.indices.clear();
		this.selectedItems.clear();
	}
	@Override
	public boolean isSelected(int index) { return this.indices.contains(index); }
	
	@Override
	public boolean isEmpty() { return this.selectedItems.isEmpty(); }
	
	@Override
	public void selectPrevious() {
		int index = this.indices.get(this.indices.size()-1);
		select(index-1);
		
	}
	@Override
	public void selectNext() {
		int index = this.indices.get(this.indices.size()-1);
		select(index+1);
	}
	
	
	
}