FileFolder.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2015 Lluis Turró Cutiller <http://www.turro.org/>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
package org.turro.file.zul.navigator;
 
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.commons.io.FileUtils;
import org.turro.attach.zul.FolderNameCombobox;
import org.turro.collections.CollectionUtil;
import org.turro.command.Command;
import org.turro.command.Context;
import org.turro.elephant.context.Application;
import org.turro.elephant.context.ElephantContext;
import org.turro.elephant.impl.util.StringParser;
import org.turro.elephant.util.Messages;
import org.turro.entities.Entities;
import org.turro.file.zul.control.FileResults;
import org.turro.i18n.I_;
import org.turro.plugin.attach.IAttachFolder;
import org.turro.upload.Medias;
import org.turro.zkoss.dialog.InputDialog;
import org.turro.zkoss.dialog.InputField;
import org.zkoss.lang.Strings;
import org.zkoss.util.media.Media;
import org.zkoss.zk.ui.HtmlBasedComponent;
import org.zkoss.zk.ui.event.DropEvent;
import org.zkoss.zk.ui.event.Event;
import org.zkoss.zk.ui.event.EventListener;
import org.zkoss.zk.ui.event.Events;
import org.zkoss.zk.ui.ext.AfterCompose;
import org.zkoss.zul.Treecell;
import org.zkoss.zul.Treechildren;
import org.zkoss.zul.Treeitem;
import org.zkoss.zul.Treerow;
 
public class FileFolder extends Treeitem implements IAttachFolder, AfterCompose {
 
  private Application app = Application.getApplication();
 
  private Treechildren children;
  private String label, realLabel;
  private String path;
  private boolean loadOnDemand;
 
  public FileFolder(String label, String path, boolean loadOnDemand) {
    super();
    this.label = label;
    this.realLabel = label;
    this.path = path;
    this.loadOnDemand = loadOnDemand;
    this.setTooltiptext(label);
  }
 
  public FileFolder(String label, Object value) {
    throw new UnsupportedOperationException("Do not use");
  }
 
  public FileFolder(String label) {
    throw new UnsupportedOperationException("Do not use");
  }
 
  public FileFolder() {
    throw new UnsupportedOperationException("Do not use");
  }
 
  @Override
  public FileTree getTree() {
    return (FileTree) super.getTree();
  }
 
  public void addMedias(Media[] medias) throws InterruptedException, IOException {
    if(medias == null || medias.length == 0) return;
    fillFolder();
    setOpen(true);
    for(Media media : medias) {
      Medias.toFolder(media, getRealFolder());
    }
    reloadContents();
  }
 
  public void doAddFolder() throws InterruptedException {
    InputDialog.getInput(
            getPage(),
            I_.get("Folder"),
            new InputField[] {
              new InputField("Name", "", null, 0) {
                @Override
                protected HtmlBasedComponent createEditor() {
                  return new FolderNameCombobox(FileFolder.this);
                }
              }
            }, new Command() {
      @Override
      public Object execute(Context context) {
        InputField[] fields = (InputField[]) context.get("fields");
        if(fields.length > 0) {
          for(InputField f : fields) {
            if("Name".equals(f.getLabel())) {
              fillFolder();
              FileFolder af = FileFolder.this;
              for(String s : ((String) f.getValue()).split("\\/")) {
                if(!Strings.isBlank(s)) {
                  af.setOpen(true);
                  af = af.addFolder(s, af.getPath() + "/" + s);
                }
              }
            }
          }
        }
        return null;
      }
    });
  }
 
  public FileFolder addFolder(String label, String path) {
    FileFolder af = new FileFolder(label, path, loadOnDemand);
    if(children == null) {
      children = new Treechildren();
      appendChild(children);
    }
    children.appendChild(af);
    af.afterCompose();
    af.doProcessors();
    return af;
  }
 
  public void showContents() {
    fillFolder();
    setOpen(true);
  }
 
  public void reloadContents() {
    if(children != null) {
      children.getChildren().clear();
      showContents();
    }
  }
 
  private void addCells() {
    Treerow row = new Treerow();
    row.setDroppable("true");
    row.addEventListener(Events.ON_DROP, new EventListener() {
      @Override
      public void onEvent(Event event) throws Exception {
        final DropEvent dp = (DropEvent) event;
        if(dp.getDragged() instanceof FileRow) {
          Messages.confirmMove().show(() -> {
            try {
              fillFolder();
              FileRow row = (FileRow) dp.getDragged();
              FileUtils.moveFileToDirectory(row.getFile(), getRealFolder(true), false);
              row.detach();
            } catch (IOException ex) {
              Logger.getLogger(FileFolder.class.getName()).log(Level.SEVERE, ElephantContext.logMsg(null), ex);
            }
          });
        }
      }
    });
    appendChild(row);
    Treecell cell = new Treecell(label);
    cell.setImage("/_zul/images/folder.png");
    row.appendChild(cell);
  }
 
  private void addChildrenSpace() {
    if(!isLeaf()) {
      children = new Treechildren();
      appendChild(children);
      if(!loadOnDemand) {
        fillFolder();
        setOpen(true);
      }
    }
  }
 
  public boolean isLoadOnDemand() {
    return loadOnDemand;
  }
 
  public void setLoadOnDemand(boolean loadOnDemand) {
    this.loadOnDemand = loadOnDemand;
  }
 
  public String getPath() {
    return path;
  }
 
  public void setPath(String path) {
    this.path = path;
  }
 
  private void initLoadOnDemand() {
    if(!loadOnDemand) return;
 
    setOpen(false);
 
    addEventListener(Events.ON_OPEN, new EventListener() {
      @Override
      public void onEvent(Event event) throws Exception {
        // load files and add folders
        if(isOpen()) {
          fillFolder();
        }
      }
    });
  }
 
  private void fillFolder() {
    if(children != null && children.getChildren().isEmpty()) {
      for(String s : getFolders()) {
        addFolder(s, path + "/" + s);
      }
    }
  }
 
  @Override
  public IAttachFolder getParentFolder() {
    return (IAttachFolder) getParentItem();
  }
 
  @Override
  public String getFolderPath() {
    return path;
  }
 
  @Override
  public String getFolderLabel() {
    return realLabel;
  }
 
  @Override
  public void setFolderLabel(String label) {
    setLabel(label);
  }
 
  public void doProcessors() {
    String shortPath = getPath();
    if(shortPath.startsWith("/_internal/files")) {
      shortPath = shortPath.substring(16);
    } else if(shortPath.startsWith("/WEB-INF/files")) {
      shortPath = shortPath.substring(14);
    }
    String str = Entities.getController(shortPath).getTreeLabel();
    if(str != null) {
      setFolderLabel(StringParser.cutString(str, 50));
      setTooltiptext(str);
    }
  }
 
  public boolean isLeaf() {
    return getFolders().isEmpty();
  }
 
  public Collection<String> getFolders() {
    File folder = getRealFolder(true);
    FileResults fr = getTree().getResults();
    return fr.getFolders(folder);
  }
 
  public Collection<FileFolder> getFileFolders() {
    showContents();
    return children != null ? CollectionUtil.from(children.getChildren()).<Collection<FileFolder>>cast() : new ArrayList<>();
  }
 
  public Collection<File> getFiles() {
    File folder = getRealFolder(true);
    FileResults fr = getTree().getResults();
    return fr.getFiles(folder);
  }
 
  public Collection<File> getFilesFrom(File folder) {
    FileResults fr = getTree().getResults();
    return fr.getFileList(folder);
  }
 
  @Override
  public void afterCompose() {
    initLoadOnDemand();
    addCells();
    addChildrenSpace();
  }
 
  public File getRealFolder() {
    return getRealFolder(false);
  }
  
  public File getRealFolder(boolean create) {
    File folder = new File(ElephantContext.getRealPath(path));
    if(!folder.exists()) {
      folder.mkdirs();
    }
    return folder;
  }
 
}