IssueRelatedTree.java

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/*
 * 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.dossier.zul.relation;
 
import java.util.List;
import java.util.Set;
import org.turro.dossier.entity.Issue;
import org.turro.dossier.entity.IssuePredecessor;
import org.turro.i18n.I_;
import org.turro.registry.ChangeCategory;
import org.turro.registry.Changes;
import org.turro.registry.UniqueString;
import org.zkoss.zk.ui.event.Event;
import org.zkoss.zk.ui.event.EventListener;
import org.zkoss.zk.ui.event.Events;
import org.zkoss.zul.*;
 
public class IssueRelatedTree extends Tree {
 
  private Treechildren children;
  private Toolbar toolbar;
  private Toolbarbutton addRelation, editRelation, deleteRelation;
  private Issue issue;
  private Changes changes;
 
  public IssueRelatedTree() {
    super();
    addColumns();
    addChildrenSpace();
  }
 
  public Changes getChanges() {
    return changes;
  }
 
  public void setChanges(Changes changes) {
    this.changes = changes;
  }
 
  public Issue getIssue() {
    return issue;
  }
 
  public void setIssue(Issue issue) {
    this.issue = issue;
    removeChild(children);
    addChildrenSpace();
    addRoots(new IssueRelation(null, issue));
    openChildrenWithIssue(children.getChildren());
  }
 
  public void setAddToolbar(boolean addToolbar) {
    if(addToolbar && toolbar == null) {
      toolbar = new Toolbar();
      toolbar.setStyle("width:100%");
      getParent().appendChild(toolbar);
      addToolbarButtons();
      addEventListener(Events.ON_SELECT, new EventListener() {
        @Override
        public void onEvent(Event event) throws Exception {
          updateButtons();
        }
      });
      updateButtons();
    }
  }
 
  private void addColumns() {
    Treecols cols = new Treecols();
    cols.setSizable(true);
    appendChild(cols);
 
    Treecol col = new Treecol();
    col.setLabel("");
    cols.appendChild(col);
 
    col = new Treecol();
    col.setLabel(I_.get("Status"));
    col.setWidth("120px");
    cols.appendChild(col);
 
    col = new Treecol();
    col.setLabel(I_.get("Responsible"));
    col.setWidth("230px");
    cols.appendChild(col);
  }
 
  private void addChildrenSpace() {
    children = new Treechildren();
    appendChild(children);
  }
 
  private void addRoots(IssueRelation current) {
    Set<IssuePredecessor> ips = current.getIssue().getSources();
    if(ips.isEmpty()) {
      children.appendChild(current);
      current.setOpen(true);
    } else {
      for(IssuePredecessor ip : ips) {
        addRoots(new IssueRelation(null, ip.getSource()));
      }
    }
  }
 
  private void addToolbarButtons() {
    addRelation = new Toolbarbutton(
            I_.get("Add relation"),
            "/_zul/images/new.png"
            );
    addRelation.addEventListener(Events.ON_CLICK, new EventListener() {
      @Override
      public void onEvent(Event event) throws Exception {
        if(IssueRelatedTree.this.getSelectedItem() instanceof IssueRelation) {
          IssueRelation ir = (IssueRelation) IssueRelatedTree.this.getSelectedItem();
          ir.doAddRelation(changes);
        }
      }
    });
    toolbar.appendChild(addRelation);
    editRelation = new Toolbarbutton(
            I_.get("Edit"),
            "/_zul/images/edit.png"
            );
    editRelation.addEventListener(Events.ON_CLICK, new EventListener() {
      @Override
      public void onEvent(Event event) throws Exception {
        if(IssueRelatedTree.this.getSelectedItem() instanceof IssueRelation) {
          IssueRelation ir = (IssueRelation) IssueRelatedTree.this.getSelectedItem();
          ir.doEditRelation(changes);
        }
      }
    });
    toolbar.appendChild(editRelation);
    deleteRelation = new Toolbarbutton(
            I_.get("Delete relation"),
            "/_zul/images/edit-delete.png"
            );
    deleteRelation.addEventListener(Events.ON_CLICK, new EventListener() {
      @Override
      public void onEvent(Event event) throws Exception {
        if(IssueRelatedTree.this.getSelectedItem() instanceof IssueRelation) {
          IssueRelation ir = (IssueRelation) IssueRelatedTree.this.getSelectedItem();
          if(changes != null) {
            ChangeCategory cc = new ChangeCategory(3, I_.get("Relations"));
            changes.addChange(new UniqueString(cc, "", "-" + ir.getPredecessor().getFullDescription()));
          }
          ir.doDeleteRelation();
        }
      }
    });
    toolbar.appendChild(deleteRelation);
  }
 
  private void openChildrenWithIssue(List children) {
    for(IssueRelation ir : (List<IssueRelation>) children) {
      if(ir.getIssue() != null && ir.getIssue().getId() != issue.getId()) {
        ir.setOpen(true);
        openChildrenWithIssue(ir.getRelatedChildren());
        break;
      }
    }
  }
 
  private void updateButtons() {
    if(toolbar != null) {
      boolean isSelected = getSelectedItem() instanceof IssueRelation;
      addRelation.setVisible(isSelected);
      editRelation.setVisible(isSelected && ((IssueRelation) getSelectedItem()).canEdit());
      deleteRelation.setVisible(isSelected && ((IssueRelation) getSelectedItem()).canDelete());
    }
  }
 
}