/*
* Licensed to the Apache Software Foundation ( ASF ) under one
* or more contributor license agreements . See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership . The ASF licenses this file
* to you under the Apache License , Version 2 . 0 ( the
* " License " ) ; you may not use this file except in compliance
* with the License . You may obtain a copy of the License at
*
* http : //www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing ,
* software distributed under the License is distributed on an
* " AS IS " BASIS , WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND , either express or implied . See the License for the
* specific language governing permissions and limitations
* under the License .
*/
package org.netbeans.api.io;
import java.io.PrintWriter;
import org.netbeans.spi.io.InputOutputProvider;
/**
* A fold ( nested or standalone ) in the output window .
*
* < p >
* Methods of this class can be called in any thread .
* < / p >
*
* @ author jhavlin
*/
public abstract class Fold {
static final Fold UNSUPPORTED = new Fold() {
@Override
public void setExpanded(boolean expanded) {
}
@Override
void endFold() {
}
};
private Fold() {
}
static <IO, OW extends PrintWriter, P, F> Fold create(
InputOutputProvider<IO, OW, P, F> provider, IO io, OW writer,
F fold) {
if (fold == null ) {
return UNSUPPORTED;
} else {
return new Impl<IO, OW, P, F>(provider, io, writer, fold);
}
}
/**
* Set fold expansion state .
*
* @ param expanded True to expand the fold , false to collapse it .
*/
public abstract void setExpanded(boolean expanded);
abstract void endFold();
/**
* Expand the fold .
*/
public final void expand() {
setExpanded(true );
}
/**
* Collapse the fold .
*/
public final void collapse() {
setExpanded(false );
}
private static class Impl<IO, OW extends PrintWriter, P, F> extends Fold {
private final InputOutputProvider<IO, OW, P, F> provider;
private final IO io;
private final OW writer;
private final F fold;
public Impl(InputOutputProvider<IO, OW, P, F> provider, IO io,
OW writer, F fold) {
this .provider = provider;
this .io = io;
this .writer = writer;
this .fold = fold;
}
@Override
public void setExpanded(boolean expanded) {
provider.setFoldExpanded(io, writer, fold, expanded);
}
@Override
void endFold() {
provider.endFold(io, writer, fold);
}
}
}
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