com.buildml.eclipse.packages.properties.filegroup.FileGroupLabelProvider.java Source code

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Here is the source code for com.buildml.eclipse.packages.properties.filegroup.FileGroupLabelProvider.java

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/*******************************************************************************
 * Copyright (c) 2013 Arapiki Solutions Inc.
 * 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:
 *    psmith - initial API and 
 *        implementation and/or initial documentation
 *******************************************************************************/

package com.buildml.eclipse.packages.properties.filegroup;

import org.eclipse.jface.viewers.LabelProvider;

import com.buildml.model.IBuildStore;
import com.buildml.model.IFileGroupMgr;
import com.buildml.model.IFileMgr;

/**
 * A "label provider" class that feeds the TreeViewer in {@link FileGroupContentPropertyPage}
 * with the text labels for members of file groups.
 * 
 * @author Peter Smith <psmith@arapiki.com>
 */
public class FileGroupLabelProvider extends LabelProvider {

    /*=====================================================================================*
     * TYPES/FIELDS
     *=====================================================================================*/

    /** The IFileMgr we retrieve label information from */
    private IFileMgr fileMgr;

    /** The type of this file group (e.g. SOURCE_GROUP, MERGE_GROUP, etc). */
    private int fileGroupType;

    /*=====================================================================================*
     * CONSTRUCTORS
     *=====================================================================================*/

    /**
     * Create a new {@link FileGroupLabelProvider} object.
     * 
     * @param buildStore The IBuildStore to retrieve content information from.
     * @param fileGroupType The type of this file group (e.g. SOURCE_GROUP, MERGE_GROUP, etc).
     */
    public FileGroupLabelProvider(IBuildStore buildStore, int fileGroupType) {
        this.fileMgr = buildStore.getFileMgr();
        this.fileGroupType = fileGroupType;
    }

    /*=====================================================================================*
     * PUBLIC METHODS
     *=====================================================================================*/

    /* (non-Javadoc)
     * @see org.eclipse.jface.viewers.LabelProvider#getText(java.lang.Object)
     */
    @Override
    public String getText(Object element) {

        /* 
         * for source groups, the objects are path IDs. Return the full path name with
         * path roots (e.g. @root/etc/passwd)
         */
        if (element instanceof TreeMember) {
            TreeMember member = (TreeMember) element;
            if (fileGroupType == IFileGroupMgr.SOURCE_GROUP) {
                return fileMgr.getPathName(member.id, true);

            } else if (fileGroupType == IFileGroupMgr.MERGE_GROUP) {
                if (member.level == 0) {
                    return "Sub Group";
                } else {
                    return member.text;
                }
            }
        }

        return "";
    }

    /*-------------------------------------------------------------------------------------*/

}