de.lessvoid.nifty.controls.AbstractController Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of nifty Show documentation

Nifty GUI is a Java Library that supports the building of interactive user interfaces for games or similar applications. It utilizes OpenGL for rendering and it can be easily integrated into many rendering systems. The configuration of the GUI is stored in xml files with little supporting Java code. In short Nifty helps you to layout stuff, display it in a cool way and interact with it :)

The newest version!

package de.lessvoid.nifty.controls;

import de.lessvoid.nifty.elements.Element;
import de.lessvoid.nifty.tools.SizeValue;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import java.util.logging.Logger;

public abstract class AbstractController implements Controller, NiftyControl {
  private static final Logger log = Logger.getLogger(AbstractController.class.getName());
  @Nullable
  private Element element;
  private boolean bound = false;

  protected void bind(@Nonnull final Element element) {
    this.element = element;
  }

  @Override
  public void init(@Nonnull final Parameters parameter) {
    this.bound = true;
  }

  @Nullable
  @Override
  public Element getElement() {
    if (element == null) {
      log.warning("Requested element from controller before binding was performed.");
    }
    return element;
  }

  @Override
  public void enable() {
    setEnabled(true);
  }

  @Override
  public void disable() {
    setEnabled(false);
  }

  @Override
  public void setEnabled(final boolean enabled) {
    final Element element = getElement();
    if (element != null) {
      if (enabled) {
        element.enable();
      } else {
        element.disable();
      }
    }
  }

  @Override
  public boolean isEnabled() {
    final Element element = getElement();
    return element != null && element.isEnabled();
  }

  @Nullable
  @Override
  public String getId() {
    final Element element = getElement();
    return element != null ? element.getId() : null;
  }

  @Override
  public void setId(@Nullable final String id) {
    final Element element = getElement();
    if (element != null) {
      element.setId(id);
    }
  }

  @Override
  public int getWidth() {
    final Element element = getElement();
    return element != null ? element.getWidth() : 0;
  }

  @Override
  public void setWidth(@Nonnull final SizeValue width) {
    final Element element = getElement();
    if (element != null) {
      element.setConstraintWidth(width);
    }
  }

  @Override
  public int getHeight() {
    final Element element = getElement();
    return element != null ? element.getHeight() : 0;
  }

  @Override
  public void setHeight(@Nonnull final SizeValue height) {
    final Element element = getElement();
    if (element != null) {
      element.setConstraintHeight(height);
    }
  }

  @Override
  public String getStyle() {
    final Element element = getElement();
    return element != null ? element.getStyle() : null;
  }

  @Override
  public void setStyle(@Nonnull final String style) {
    final Element element = getElement();
    if (element != null) {
      element.setStyle(element.getNifty().specialValuesReplace(style));
    }
  }

  @Override
  public void setFocus() {
    final Element element = getElement();
    if (element != null) {
      element.setFocus();
    }
  }

  @Override
  public void setFocusable(final boolean focusable) {
    final Element element = getElement();
    if (element != null) {
      element.setFocusable(focusable);
    }
  }

  @Override
  public void onFocus(final boolean getFocus) {
    final Element element = getElement();
    if (element != null) {
      String id = element.getId();
      if (id != null) {
        if (getFocus) {
          element.getNifty().publishEvent(id, new FocusGainedEvent(this, this));
        } else {
          element.getNifty().publishEvent(id, new FocusLostEvent(this, this));
        }
      }
    }
  }

  @Override
  public boolean hasFocus() {
    final Element element = getElement();
    if (element == null) {
      return false;
    }
    return element == element.getFocusHandler().getKeyboardFocusElement();
  }

  @Override
  public void layoutCallback() {
  }

  @Override
  public boolean isBound() {
    return bound;
  }

  @Override
  public void onEndScreen() {
  }

}