org.nchadoop.ui.listbox.Displayable.java Source code

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Here is the source code for org.nchadoop.ui.listbox.Displayable.java

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/*******************************************************************************
 * Copyright 2013 Christian Schneider
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package org.nchadoop.ui.listbox;

import java.text.MessageFormat;

import lombok.Data;

import org.apache.commons.lang3.StringUtils;
import org.nchadoop.Utils;
import org.nchadoop.fs.Directory;
import org.nchadoop.ui.MainWindow;

@Data
public class Displayable implements Comparable<Displayable> {
    private final MainWindow mainWindow;
    private final Directory parent;
    private final Directory target;
    private final String name;
    private final long size;

    private final Object reference;

    @Override
    public int compareTo(final Displayable o) {
        return Long.compare(o.size, size);
    }

    public String formatDisplayText(final int width, final long maximumSize) {
        final String readableSize = StringUtils.leftPad(Utils.readableFileSize(this.size), 10);
        final String guage = createGuage(this.size, maximumSize);

        return StringUtils.rightPad(MessageFormat.format("{0} {1} {2}", readableSize, guage, this.name), width);
    }

    private String createGuage(final long size, final long largest) {
        if (size < 0)
            return "            ";

        final int length = (int) Math.round(((double) size) / largest * 10);

        return "[" + StringUtils.rightPad("##########".substring(0, length), 10) + "]";
    }

    public void navigate() {
        if (target != null) {
            this.mainWindow.changeFolder(this.target);
        }
    }

    public void navigateToParent() {
        if (parent != null) {
            this.mainWindow.changeFolder(parent);
        }
    }

}