package org.pentaho.reporting.engine.classic.core.layout.build;

import org.pentaho.reporting.engine.classic.core.layout.model.RenderBox;
import org.pentaho.reporting.engine.classic.core.states.ReportStateKey;

public class DummyLayoutModelBuilderContext implements LayoutModelBuilderContext, Cloneable {

  private LayoutModelBuilderContext parent;
  private boolean keepWrapperBoxAlive;
  private boolean autoGeneratedWrapperBox;

  public DummyLayoutModelBuilderContext( final LayoutModelBuilderContext parent ) {

    this.parent = parent;

  }

  public RenderBox getRenderBox() {
    return null;
  }

  public LayoutModelBuilderContext getParent() {
    return parent;
  }

  public boolean isEmpty() {
    return true;
  }

  public boolean mergeSection( final ReportStateKey stateKey ) {
    return false;
  }

  public void setEmpty( final boolean empty ) {
  }

  public void commitAsEmpty() {
  }

  public boolean isKeepWrapperBoxAlive() {
    return keepWrapperBoxAlive;
  }

  /**
   * A post-fix box stays open after the origin-box is closed.
   *
   * @param keepWrapperBoxAlive
   */
  public void setKeepWrapperBoxAlive( final boolean keepWrapperBoxAlive ) {
    this.keepWrapperBoxAlive = keepWrapperBoxAlive;
  }

  public boolean isAutoGeneratedWrapperBox() {
    return autoGeneratedWrapperBox;
  }

  /**
   * A prefix box is closed immediately after the origin-box is closed. Prefix boxes are not merged with silbling boxes.
   *
   * @param autoGeneratedWrapperBox
   */
  public void setAutoGeneratedWrapperBox( final boolean autoGeneratedWrapperBox ) {
    this.autoGeneratedWrapperBox = autoGeneratedWrapperBox;
  }

  public LayoutModelBuilderContext close() {
    return this.parent;
  }

  public void addChild( final RenderBox child ) {
  }

  public void removeChild( final RenderBox child ) {
  }

  public Object clone() {
    try {
      return super.clone();
    } catch ( CloneNotSupportedException e ) {
      throw new IllegalStateException( e );
    }
  }

  public LayoutModelBuilderContext deriveForPagebreak() {
    final DummyLayoutModelBuilderContext clone = (DummyLayoutModelBuilderContext) clone();
    if ( parent != null ) {
      clone.parent = parent.deriveForPagebreak();
    }
    return clone;
  }

  public LayoutModelBuilderContext deriveForStorage( final RenderBox clonedRoot ) {
    if ( clonedRoot == null ) {
      throw new NullPointerException();
    }
    final DummyLayoutModelBuilderContext clone = (DummyLayoutModelBuilderContext) clone();
    clone.parent = parent.deriveForStorage( clonedRoot );
    return clone;
  }

  public void validateAfterCommit() {

  }

  public void performParanoidModelCheck() {

  }

  public void restoreStateAfterRollback() {

  }

  public int getDepth() {
    if ( parent == null ) {
      return 1;
    }
    return 1 + parent.getDepth();
  }
}