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package xenustreet.gui.control;

import com.jme3.input.event.MouseButtonEvent;
import com.jme3.math.Vector2f;
import com.jme3.math.Vector4f;
import java.util.ArrayList;
import java.util.List;
import tonegod.gui.controls.scrolling.ScrollAreaAdapter;
import tonegod.gui.core.ElementManager;

/**
 *
 * @author root
 */
public abstract class GridButtonClickableListControl<T> extends ScrollAreaAdapter {
    private final List<T> list;
    private final List<GridRowButton> buttons;
    private float vOffset;
    private float absWidth; // for some reason this changes

    public GridButtonClickableListControl(ElementManager screen, Vector2f position, List<T> list) {
        super(screen, position);
        this.list = list;
        this.buttons = new ArrayList<>();
        absWidth = getScrollableArea().getAbsoluteWidth();
        invalidate();
    }

    public GridButtonClickableListControl(ElementManager screen, Vector2f position, Vector2f dimensions, List<T> list) {
        super(screen, position, dimensions);
        this.list = list;
        this.buttons = new ArrayList<>();
        absWidth = getScrollableArea().getAbsoluteWidth();
        invalidate();
    }

    public GridButtonClickableListControl(ElementManager screen, Vector2f position, Vector2f dimensions, Vector4f resizeBorders, String defaultImg, List<T> list) {
        super(screen, position, dimensions, resizeBorders, defaultImg);
        this.list = list;
        this.buttons = new ArrayList<>();
        absWidth = getScrollableArea().getAbsoluteWidth();
        invalidate();
    }

    public GridButtonClickableListControl(ElementManager screen, String UID, Vector2f position, List<T> list) {
        super(screen, UID, position);
        this.list = list;
        this.buttons = new ArrayList<>();
        absWidth = getScrollableArea().getAbsoluteWidth();
        invalidate();
    }

    public GridButtonClickableListControl(ElementManager screen, String UID, Vector2f position, Vector2f dimensions, List<T> list) {
        super(screen, UID, position, dimensions);
        this.list = list;
        this.buttons = new ArrayList<>();
        absWidth = getScrollableArea().getAbsoluteWidth();
        invalidate();
    }

    public GridButtonClickableListControl(ElementManager screen, String UID, Vector2f position, Vector2f dimensions, Vector4f resizeBorders, String defaultImg, List<T> list) {
        super(screen, UID, position, dimensions, resizeBorders, defaultImg);
        this.list = list;
        this.buttons = new ArrayList<>();
        absWidth = getScrollableArea().getAbsoluteWidth();
        invalidate();
    }

    /**
     * invalidates the current state, causing an update based on the current
     * contents of the list
     */
    public final void invalidate(){
        for(GridRowButton btn : buttons){
            removeScrollableChild(btn);
        }
        buttons.clear();
        for(T item : list){
            addItem(item, false);
        }
        //updateClipping();
    }

    public final void addItem(T item, boolean addToList){
        final GridButtonClickableListControl<T> _t = this;
        final int nxtIndex = buttons.size();

        GridRowButton button = new GridRowButton(screen,
                new Vector2f(0f, vOffset),
                new Vector2f(absWidth, 80f ),
                3, 20f){
                    @Override
                    public void onButtonMouseLeftDown(MouseButtonEvent evt, boolean toggled) {
                        super.onButtonMouseLeftDown(evt, toggled);
                        _t.onButtonClick(nxtIndex);
                    }
                };
        populateGridButton(item, button);

        addScrollableChild(button);
        vOffset += button.getHeight();
        buttons.add(button);
        if(addToList){
            list.add(item);
            scrollToBottom();
        }
    }

    public final void addItem(T item){
        addItem(item, true);
    }

    /**
     * overide this method to populate the grid button
     * @param item
     * @param btn
     */
    public abstract void populateGridButton(T item, GridRowButton btn);

    /**
     * this is where you return something to happen for a given action.
     * @param item
     */
    public abstract void onButtonClick(T item, GridRowButton btn, int idx);

    private void onButtonClick(int idx) {
        onButtonClick(list.get(idx), buttons.get(idx), idx);
    }
}