com.dragansah.filebrowser.components.FileBrowser.java Source code

Introduction

Here is the source code for com.dragansah.filebrowser.components.FileBrowser.java

Source

// Copyright 2012 Dragan Sahpaski
//
// 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 com.dragansah.filebrowser.components;

import java.io.File;
import java.io.FileFilter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import javax.inject.Inject;

import org.apache.commons.io.FileUtils;
import org.apache.commons.io.filefilter.FileFilterUtils;
import org.apache.tapestry5.Asset;
import org.apache.tapestry5.Block;
import org.apache.tapestry5.Link;
import org.apache.tapestry5.annotations.Import;
import org.apache.tapestry5.annotations.InjectComponent;
import org.apache.tapestry5.annotations.Parameter;
import org.apache.tapestry5.annotations.Path;
import org.apache.tapestry5.annotations.Property;
import org.apache.tapestry5.corelib.components.Zone;
import org.apache.tapestry5.services.ajax.AjaxResponseRenderer;
import org.apache.tapestry5.upload.services.UploadedFile;

import com.dragansah.filebrowser.domain.FileModel;
import com.dragansah.filebrowser.services.FileService;

@Import(stylesheet = "file-browser.css")
public class FileBrowser {
    @Property
    @Parameter(required = true, allowNull = false)
    private File currentDirectory;

    @Property
    @Parameter(required = true, allowNull = false)
    private File topDirectory;

    @Parameter
    private boolean showLinkColumn;

    @Inject
    private AjaxResponseRenderer ajaxResponseRenderer;

    @InjectComponent
    private Zone mainZone;

    @Property
    private boolean creatingDirectory;

    @Property
    private int gridRowIndex;

    @SuppressWarnings("unused")
    @Path("../icons/delete.png")
    @Inject
    @Property
    private Asset deleteIcon;

    @Property
    private String newDirectoryName;

    public String getGridColumns() {
        if (showLinkColumn)
            return "link, delete";

        return "delete";
    }

    Object onCreateDirectory() {
        creatingDirectory = true;

        return mainZone.getBody();
    }

    public boolean isNewDirectory() {
        return creatingDirectory == true && gridRowIndex == 1;
    }

    private boolean saveNewDirectory;

    void onSelectedFromSaveNewDirectory() {
        saveNewDirectory = true;
    }

    void onSuccessFromNewDirectoryForm() throws IOException {
        if (!saveNewDirectory)
            return;

        new File(currentDirectory, newDirectoryName).mkdir();
    }

    @Property
    private FileModel file;

    public List<FileModel> getFiles() {
        List<FileModel> files = new ArrayList<FileModel>();

        File[] subDirs = currentDirectory.listFiles((FileFilter) FileFilterUtils.directoryFileFilter());

        if (!topDirectory.getPath().equals(currentDirectory.getPath()))
            files.add(FileModel.getPreviousDirectory(currentDirectory));

        for (File f : subDirs)
            files.add(FileModel.fromFile(f));

        for (File f : FileUtils.listFiles(currentDirectory, null, false)) {
            files.add(FileModel.fromFile(f));
            // FileSystemView view = FileSystemView.getFileSystemView();
        }

        return files;
    }

    Object onBrowseFolder(FileModel file) {
        currentDirectory = new File(file.getAbsolutePath());
        return mainZone.getBody();
    }

    Object onDownloadFile(final FileModel file) {
        return fileService.createStreamResponseFromFile(new File(file.getAbsolutePath()));
    }

    void onAjaxFileUploadFromUploadFile(UploadedFile uploadedFile) {
        uploadedFile.write(new File(currentDirectory, uploadedFile.getFileName()));

        ajaxResponseRenderer.addRender("mainZone", mainZone);
    }

    @SuppressWarnings("unused")
    @Property
    private File fileForDelete;

    @Inject
    private Block deleteBlock;

    Object onActionFromDeleteFileLink(File file) {
        fileForDelete = file;

        return deleteBlock;
    }

    private boolean deleteFile;

    void onSelectedFromDeleteFile() {
        deleteFile = true;
    }

    void onSuccessFromDeleteFileForm(File fileForDelete) {
        if (!deleteFile)
            return;

        FileUtils.deleteQuietly(fileForDelete);
    }

    @Inject
    private FileService fileService;

    public Link getFileLink() {
        return fileService.createDownloadLinkFromFile(new File(file.getAbsolutePath()));
    }
}