org.eclipse.mylyn.commons.ui.TreeViewerSupport.java Source code

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Here is the source code for org.eclipse.mylyn.commons.ui.TreeViewerSupport.java

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/*******************************************************************************
 * Copyright (c) 2010 Tasktop Technologies 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:
 *     Tasktop Technologies - initial API and implementation
 *******************************************************************************/

package org.eclipse.mylyn.commons.ui;

import java.io.File;

import org.eclipse.jface.layout.AbstractColumnLayout;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeColumn;

/**
 * @author Shawn Minto
 * @author Steffen Pingel
 * @since 3.7
 */
public class TreeViewerSupport extends AbstractColumnViewerSupport<TreeColumn> {

    private final Tree tree;

    public TreeViewerSupport(TreeViewer viewer, File stateFile) {
        super(viewer, stateFile);
        this.tree = viewer.getTree();
        initializeViewerSupport();
    }

    public TreeViewerSupport(TreeViewer viewer, File stateFile, boolean[] defaultVisibilities) {
        super(viewer, stateFile, defaultVisibilities);
        this.tree = viewer.getTree();
        initializeViewerSupport();
    }

    @Override
    void addColumnSelectionListener(TreeColumn column, SelectionListener selectionListener) {
        column.addSelectionListener(selectionListener);
    }

    @Override
    Rectangle getClientArea() {
        return tree.getClientArea();
    }

    @Override
    TreeColumn getColumn(int index) {
        return tree.getColumn(index);
    }

    @Override
    int getColumnIndexOf(TreeColumn column) {
        return tree.indexOf(column);
    }

    @Override
    AbstractColumnLayout getColumnLayout() {
        if (tree.getLayout() instanceof AbstractColumnLayout) {
            return (AbstractColumnLayout) tree.getLayout();
        } else if (tree.getParent().getLayout() instanceof AbstractColumnLayout) {
            return (AbstractColumnLayout) tree.getParent().getLayout();
        } else {
            return null;
        }
    }

    @Override
    int[] getColumnOrder() {
        return tree.getColumnOrder();
    }

    @Override
    TreeColumn[] getColumns() {
        return tree.getColumns();
    }

    @Override
    int getColumnWidth(TreeColumn column) {
        return column.getWidth();
    }

    @Override
    int getHeaderHeight() {
        return tree.getHeaderHeight();
    }

    @Override
    TreeColumn getSortColumn() {
        return tree.getSortColumn();
    }

    @Override
    int getSortDirection() {
        return tree.getSortDirection();
    }

    @Override
    void setColumnOrder(int[] order) {
        tree.setColumnOrder(order);
    }

    @Override
    void setColumnResizable(TreeColumn column, boolean resizable) {
        column.setResizable(resizable);
    }

    @Override
    void setColumnWidth(TreeColumn column, int width) {
        column.setWidth(width);
    }

    @Override
    void setSortColumn(TreeColumn column) {
        tree.setSortColumn(column);
    }

    @Override
    void setSortDirection(int direction) {
        tree.setSortDirection(direction);
    }

}