TransformView.java

/*
 * Chrysalix
 * See the COPYRIGHT.txt file distributed with this work for information
 * regarding copyright ownership.  Some portions may be licensed
 * to Red Hat, Inc. under one or more contributor license agreements.
 * See the AUTHORS.txt file in the distribution for a full listing of 
 * individual contributors.
 *
 * Chrysalix is free software. Unless otherwise indicated, all code in Chrysalix
 * is licensed to you under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * Chrysalix 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.chrysalix.eclipse.view;

import java.io.File;

import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.part.ViewPart;
import org.chrysalix.common.ChrysalixException;
import org.chrysalix.eclipse.EclipseI18n;
import org.chrysalix.eclipse.Util;
import org.chrysalix.eclipse.focustree.FocusTree;
import org.chrysalix.eclipse.focustree.FocusTree.Model;
import org.chrysalix.eclipse.focustree.FocusTree.ViewModel;

/**
 * A view whose contents are the transforms contained in the workspace.
 */
public class TransformView extends ViewPart {

    static final Color FOLDER_COLOR = new Color( Display.getCurrent(), 0, 64, 128 );

    /**
     * The workspace part identifier for this view.
     */
    public static final String ID = WorkspaceView.class.getPackage().getName() + ".transformationsView";

    /**
     * {@inheritDoc}
     * 
     * @see org.eclipse.ui.part.WorkbenchPart#createPartControl(org.eclipse.swt.widgets.Composite)
     */
    @Override
    public void createPartControl( final Composite parent ) {
        final FocusTree focusTree = new FocusTree( parent, new File( System.getProperty( "user.home" ) ), new Model() {

            @Override
            public int childCount( final Object item ) {
                return children( item ).length;
            }

            @Override
            public Object[] children( final Object item ) {
                final Object[] children = ( ( File ) item ).listFiles();
                return children == null ? Util.EMPTY_ARRAY : children;
            }

            @Override
            public boolean hasChildren( final Object item ) {
                return childCount( item ) > 0;
            }

            @Override
            public String name( final Object item ) {
                final File file = ( File ) item;
                final String name = file.getName();
                return name.isEmpty() ? "/" : name;
            }

            @Override
            public String type( final Object item ) {
                final File file = ( File ) item;
                return file.isDirectory() ? "Folder" : "File";
            }
        } );
        focusTree.setViewModel( new ViewModel() {

            @Override
            public Color cellBackgroundColor( final Object item ) {
                if ( ( ( File ) item ).isDirectory() ) return FOLDER_COLOR;
                return Display.getCurrent().getSystemColor( SWT.COLOR_WHITE );
            }

            @Override
            public boolean initialIndexIsOne() {
                return true;
            }
        } );
        try {
            setPartName( focusTree.model().name( focusTree.root() ).toString() );
        } catch ( final ChrysalixException e ) {
            setPartName( EclipseI18n.focusTreeErrorText.text( e.getMessage() ) );
        }
        setTitleImage( focusTree.viewModel().icon( focusTree.root() ) );
    }

    /**
     * {@inheritDoc}
     * 
     * @see org.eclipse.ui.part.WorkbenchPart#setFocus()
     */
    @Override
    public void setFocus() {}
}