/*
    GNU LESSER GENERAL PUBLIC LICENSE
    Copyright (C) 2006 The XAMJ Project

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Contact info: lobochief@users.sourceforge.net
 */
package org.lobobrowser.html.renderer;

import java.awt.Dimension;
import java.awt.Insets;

import org.eclipse.jdt.annotation.NonNull;
import org.lobobrowser.html.domimpl.ModelNode;
import org.lobobrowser.ua.UserAgentContext;

public class RImgControl extends RUIControl {
  public RImgControl(final ModelNode me, final ImgControl widget, final RenderableContainer container, final FrameContext frameContext,
      final UserAgentContext ucontext) {
    super(me, widget, container, frameContext, ucontext);
  }

  // TODO: This is a hack. RUIControl excludes border insets from the UI control. Images need to exclude padding as well.
  // Hence, we are returning getInsets() from getBorderInsets().
  // A better way would be to create two methods: one for excluded space and one for included space and implement as per convenience.
  // Yet another idea: check if RImgControl really needs to sub-class RUIControl or it can directly sub-class BaseElementRenderable.
  @Override
  public @NonNull Insets getBorderInsets() {
    return getInsets(false, false);
  }

  @Override
  public void doLayout(int availWidth, int availHeight, boolean sizeOnly) {
    super.doLayout(availWidth, availHeight, sizeOnly);
    updateWidthHeight();
  }

  private void updateWidthHeight() {
    final boolean widthConstrained = isWidthConstrained();
    final boolean heightConstrained = isHeightConstrained();
    if (!widthConstrained && heightConstrained) {
      final Dimension prefSize = widget.getPreferredSize();
      if (prefSize.height != 0) {
        this.width = (prefSize.width * getInnerMostHeight()) / prefSize.height;
      }
    } else if (!heightConstrained && widthConstrained) {
      final Dimension prefSize = widget.getPreferredSize();
      if (prefSize.width != 0) {
        this.height = (prefSize.height * getInnerMostWidth()) / prefSize.width;
      }
    }
  }

  @Override
  public void setInnerWidth(final Integer newWidth) {
    super.setInnerWidth(newWidth);
    updateWidthHeight();
  }

  @Override
  public void setInnerHeight(final Integer newHeight) {
    super.setInnerHeight(newHeight);
    updateWidthHeight();
  }

  @Override
  public boolean isReadyToPaint() {
    return super.isReadyToPaint() && widget.isReadyToPaint();
  }

  @Override
  public String toString() {
    return "RImgControl : " + modelNode;
  }
}