org.richfaces.component.DataTableFixedChildrenIterator Maven / Gradle / Ivy
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*
* This 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
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*
* This software is distributed in the hope that it will be useful,
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* Lesser General Public License for more details.
*
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package org.richfaces.component;
import java.util.Iterator;
import javax.faces.component.UIColumn;
import javax.faces.component.UIComponent;
import com.google.common.collect.AbstractIterator;
import com.google.common.collect.Iterators;
class DataTableFixedChildrenIterator extends AbstractIterator {
private Iterator facetsIterator;
private Iterator dataTableChildren;
private Iterator columnFacets = Iterators.emptyIterator();
public DataTableFixedChildrenIterator(UIComponent dataTable) {
super();
this.facetsIterator = dataTable.getFacets().values().iterator();
this.dataTableChildren = dataTable.getChildren().iterator();
}
@Override
protected UIComponent computeNext() {
if (facetsIterator.hasNext()) {
return facetsIterator.next();
}
while (columnFacets.hasNext() || dataTableChildren.hasNext()) {
if (columnFacets.hasNext()) {
return columnFacets.next();
}
UIComponent child = dataTableChildren.next();
if (child instanceof UIColumn || child instanceof AbstractColumn) {
columnFacets = child.getFacets().values().iterator();
}
}
dataTableChildren = Iterators.emptyIterator();
columnFacets = Iterators.emptyIterator();
return endOfData();
}
}