elephant-workingdir/src/main/java/org/turro/wd/tree/DefaultTask.java

Go to the documentation of this file.

/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2011 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.wd.tree;
 
import java.text.ParseException;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.turro.pivot.dialog.ProgressSheet;
import org.apache.pivot.collections.List;
import org.apache.pivot.collections.Sequence;
import org.apache.pivot.util.concurrent.Task;
import org.apache.pivot.util.concurrent.TaskExecutionException;
import org.apache.pivot.wtk.TreeView;
import org.apache.pivot.wtk.content.TreeNode;
 
public abstract class DefaultTask extends Task<String> {
 
  protected TreeView treeView;
  private double inc;
 
  public DefaultTask(TreeView treeView, String caption) {
    this.treeView = treeView;
    ProgressSheet.startMeasuredProgress(caption, true);
  }
 
  protected abstract String done();
  protected abstract String failed();
  protected abstract void process(TreeDirectory dir) throws ParseException;
  protected abstract void process(TreeWorkFile file) throws ParseException;
 
  @Override
  public String execute() throws TaskExecutionException {
    try {
      inc = 1 / (countNodes((List<TreeNode>) treeView.getTreeData(), false, 0.0) * 1.0);
      processNodes((List<TreeNode>) treeView.getTreeData(), false);
      ProgressSheet.endProgress(done());
      return done();
    } catch (ParseException ex) {
      Logger.getLogger(DefaultTask.class.getName()).log(Level.SEVERE, null, ex);
    }
    ProgressSheet.endProgress(failed());
    return failed();
  }
 
  private void processNodes(List<TreeNode> nodes, boolean selected) throws ParseException {
    for(TreeNode tn : nodes) {
      boolean sel = selected || treeView.isNodeChecked(
              Sequence.Tree.pathOf((List<TreeNode>) treeView.getTreeData(), tn));
      if(ProgressSheet.getInstance().isCanceled()) {
        return;
      }
      if(tn instanceof TreeDirectory) {
        ProgressSheet.nextProgress(null, tn.getText(), -1);
        processNodes((TreeDirectory) tn, sel);
        if(sel) {
          process((TreeDirectory) tn);
        }
      } else if(tn instanceof TreeWorkFile) {
        if(sel) {
          process((TreeWorkFile) tn);
          ProgressSheet.nextProgress(null, tn.getText(), inc);
        } else {
          ProgressSheet.nextProgress(null, tn.getText(), -1);
        }
      }
    }
  }
 
  private double countNodes(List<TreeNode> nodes, boolean selected, double count) throws ParseException {
    for(TreeNode tn : nodes) {
      boolean sel = selected || treeView.isNodeChecked(
              Sequence.Tree.pathOf((List<TreeNode>) treeView.getTreeData(), tn));
      if(tn instanceof TreeDirectory) {
        count = countNodes((TreeDirectory) tn, sel, count);
      } else if(tn instanceof TreeWorkFile) {
        if(sel) {
          count++;
        }
      }
    }
    return count;
  }
 
}