/**
* Copyright (C) cedarsoft GmbH.
*
* Licensed under the GNU General Public License version 3 (the "License")
* with Classpath Exception; you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.cedarsoft.org/gpl3ce
* (GPL 3 with Classpath Exception)
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 3 only, as
* published by the Free Software Foundation. cedarsoft GmbH designates this
* particular file as subject to the "Classpath" exception as provided
* by cedarsoft GmbH in the LICENSE file that accompanied this code.
*
* This code 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 General Public License
* version 3 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 3 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact cedarsoft GmbH, 72810 Gomaringen, Germany,
* or visit www.cedarsoft.com if you need additional information or
* have any questions.
*/
package com.cedarsoft.presenter;
import com.cedarsoft.commons.struct.DepthFirstStructureTreeWalker;
import com.cedarsoft.commons.struct.StructPart;
import com.cedarsoft.commons.struct.StructureTreeWalker;
import javax.annotation.Nonnull;
import java.lang.String;
/**
* <p>StructStringPresenter class.</p>
*
* @author Johannes Schneider (<a href=mailto:js@cedarsoft.com>js@cedarsoft.com</a>)
*/
public class StructStringPresenter implements Presenter<String> {
@Nonnull
private final String intendSequence;
private static final char NEWLINE_CHAR = '\n';
/**
* <p>Constructor for StructStringPresenter.</p>
*/
public StructStringPresenter() {
this( " " );
}
/**
* <p>Constructor for StructStringPresenter.</p>
*
* @param intendSequence a String object.
*/
public StructStringPresenter( @Nonnull String intendSequence ) {
this.intendSequence = intendSequence;
}
@Override
@Nonnull
public String present( @Nonnull StructPart struct ) {
final StringBuilder builder = new StringBuilder();
StructureTreeWalker treeWalker = new DepthFirstStructureTreeWalker();
treeWalker.walk( struct, new StructureTreeWalker.WalkerCallBack() {
@Override
public void nodeReached( @Nonnull StructPart node, int level ) {
for ( int i = 0; i < level; i++ ) {
builder.append( intendSequence );
}
builder.append( node.getName() );
builder.append( NEWLINE_CHAR );
}
} );
return builder.toString();
}
}