UIDisplayWindow.java

package org.terasology.rendering.gui.framework;

import org.lwjgl.opengl.Display;
import org.terasology.logic.manager.GUIManager;

import javax.vecmath.Vector2f;
import java.util.HashMap;

import static org.lwjgl.opengl.GL11.*;

public class UIDisplayWindow extends UIScrollableDisplayContainer {

    private boolean _maximized = false;
    private boolean _modal = false;
    private HashMap<String, UIDisplayElement> _displayElementsById = new HashMap<String, UIDisplayElement>();


    protected void drag(Vector2f value) {
        getPosition().x -= value.x;
        getPosition().y -= value.y;
    }

    public void close(boolean clearInputControls) {
        setVisible(false);
        setFocus(false);
        GUIManager.getInstance().setFocusedFromLast();
        if (clearInputControls) {
            clearInputControls();
        }
    }

    public void show() {
        setVisible(true);
        setFocus(true);
    }

    public void clearInputControls() {
        for (UIDisplayElement element : getDisplayElements()) {
            if (IInputDataElement.class.isInstance(element)) {
                IInputDataElement inputControl = (IInputDataElement) element;
                inputControl.clearData();
            }
        }
    }

    public void render() {
        if (isModal()) {
            renderOverlay();
        }
        super.render();
    }

    public void renderOverlay() {
        glPushMatrix();
        glLoadIdentity();
        glColor4f(0, 0, 0, 0.75f);
        glBegin(GL_QUADS);
        glVertex2f(0f, 0f);
        glVertex2f((float) Display.getWidth(), 0f);
        glVertex2f((float) Display.getWidth(), (float) Display.getHeight());
        glVertex2f(0f, (float) Display.getHeight());
        glEnd();
        glPopMatrix();
    }

    public void maximize() {
        setSize(new Vector2f(Display.getWidth(), Display.getHeight()));
        _maximized = true;
    }

    public boolean isMaximized() {
        return _maximized;
    }

    public boolean isModal() {
        return _modal;
    }

    public void setModal(boolean modal) {
        _modal = modal;
    }

    public void addDisplayElement(UIDisplayElement element, String elementId) {
        addDisplayElement(element);
        _displayElementsById.put(elementId, element);
        element.setParent(this);
    }

    public UIDisplayElement getElementById(String elementId) {
        if (!_displayElementsById.containsKey(elementId)) {
            return null;
        }

        return _displayElementsById.get(elementId);
    }
}