com.zyz.mobile.file.FileClipboard.java Source code

Introduction

Here is the source code for com.zyz.mobile.file.FileClipboard.java

Source

/*
Copyright (C) 2013 Ray Zhou
    
JadeRead is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
    
JadeRead 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 General Public License for more details.
    
You should have received a copy of the GNU General Public License
along with JadeRead.  If not, see <http://www.gnu.org/licenses/>
    
Author: Ray Zhou
Date: 2013 04 26
    
*/
package com.zyz.mobile.file;

import org.apache.commons.io.FileUtils;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;

public class FileClipboard implements Iterable<File> {

    private ArrayList<File> clipboard = new ArrayList<File>();

    public final static int MODE_NONE = 1;
    public final static int MODE_CUT = 2;
    public final static int MODE_COPY = 3;

    private int mode = MODE_NONE;

    public FileClipboard() {

    }

    private void setMode(int mode) {
        this.mode = mode;
    }

    /**
     * Returns whether or not the clipboard is empty.
     *
     * @return true if the clipboard is empty, false otherwise.
     */
    public boolean isEmpty() {
        return clipboard.isEmpty();
    }

    /**
     * Clears the clipboard.
     */
    public void empty() {
        clipboard.clear();
    }

    /**
     * Add file to the clipboard. When paste, the file saved in the clipboard
     * will be moved (cut)
     *
     * @param file the file to be cut
     */
    public void cut(File file) {
        if (mode != MODE_CUT) {
            setMode(MODE_CUT);
            empty();
        }
        clipboard.add(file);
    }

    /**
     * Add file to the clipboard. When paste, the file saved in the clipboard will be
     * copied.
     *
     * @param file the file to be copied
     */
    public void copy(File file) {
        if (mode != MODE_COPY) {
            setMode(MODE_COPY);
            empty();
        }
        clipboard.add(file);
    }

    /**
     * Paste the content of the clipboard to the specified destination.
     *
     * @param destDir the destination to paste to
     * @return true if paste is succesful, false otherwise
     */
    public boolean paste(File destDir) {
        boolean result = true;
        for (File file : clipboard) {
            try {
                if (mode == MODE_CUT) {
                    moveFileToDirectory(file, destDir);
                } else if (mode == MODE_COPY) {
                    copyFileToDirectory(file, destDir);
                }
            } catch (IOException e) {
                result = false;
            }
        }
        if (mode == MODE_CUT) {
            setMode(MODE_NONE);
            empty();
        }
        return result;
    }

    /**
     * Delete the specified file.
     *
     * @param file the file to be deleted
     */
    public static void deleteFile(File file) throws IOException {
        if (file.isFile()) {
            file.delete();
        } else {
            FileUtils.deleteDirectory(file);
        }
    }

    /**
     * Move the specified file/directory to the destination directory.
     *
     * @param srcFile the file/directory to be moved
     * @param destDir the destination directory
     * @throws IOException
     */
    public static void moveFileToDirectory(File srcFile, File destDir) throws IOException {
        if (srcFile.isDirectory()) {
            FileUtils.moveDirectoryToDirectory(srcFile, destDir, true);
        } else {
            FileUtils.moveFileToDirectory(srcFile, destDir, false);
        }
    }

    /**
     * Copy the specified file/directory to the destination directory.
     *
     * @param srcFile the file/directory to be copied
     * @param destDir the destination directory
     * @throws IOException
     */
    public static void copyFileToDirectory(File srcFile, File destDir) throws IOException {
        if (srcFile.isDirectory()) {
            FileUtils.copyDirectoryToDirectory(srcFile, destDir);
        } else {
            FileUtils.copyFileToDirectory(srcFile, destDir);
        }
    }

    @Override
    public Iterator<File> iterator() {
        return clipboard.iterator();
    }

}