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/*******************************************************************************
* Copyright (c) 2006, 2015 Tom Schindl and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Tom Schindl - initial API and implementation
******************************************************************************/
package org.eclipse.jface.viewers;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeColumn;
/**
* ViewerColumn implementation for TreeViewer to enable column-specific label
* providers and editing support.
*
* @since 3.3
*
*/
public final class TreeViewerColumn extends ViewerColumn {
private TreeColumn column;
/**
* Creates a new viewer column for the given {@link TreeViewer} on a new
* {@link TreeColumn} with the given style bits. The column is inserted at
* the given index into the list of columns.
*
* @param viewer
* the tree viewer to which this column belongs
* @param style
* the style bits used to create the column, for applicable style bits
* see {@link TreeColumn}
* @see TreeColumn#TreeColumn(Tree, int)
*/
public TreeViewerColumn(TreeViewer viewer, int style) {
this(viewer, style, -1);
}
/**
* Creates a new viewer column for the given {@link TreeViewer} on a new
* {@link TreeColumn} with the given style bits. The column is added at the
* end of the list of columns.
*
* @param viewer
* the tree viewer to which this column belongs
* @param style
* the style bits used to create the column, for applicable style bits
* see {@link TreeColumn}
* @param index
* the index at which to place the newly created column
* @see TreeColumn#TreeColumn(Tree, int, int)
*/
public TreeViewerColumn(TreeViewer viewer, int style, int index) {
this(viewer, createColumn(viewer.getTree(), style, index));
}
/**
* Creates a new viewer column for the given {@link TreeViewer} on the given
* {@link TreeColumn}.
*
* @param viewer
* the tree viewer to which this column belongs
* @param column
* the underlying tree column
*/
public TreeViewerColumn(TreeViewer viewer, TreeColumn column) {
super(viewer, column);
this.column = column;
}
private static TreeColumn createColumn(Tree table, int style, int index) {
if (index >= 0) {
return new TreeColumn(table, style, index);
}
return new TreeColumn(table, style);
}
/**
* @return the underlying SWT column
*/
public TreeColumn getColumn() {
return column;
}
}