VertexStripeLanes.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2022 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.graph;
 
import org.zkoss.zul.Div;
import org.zkoss.zul.Hlayout;
import org.zkoss.zul.Vlayout;
 
public class VertexStripeLanes extends Div {
  
  private IssueVertex target;
  private boolean top = true;
 
  public IssueVertex getTarget() {
    return target;
  }
 
  public void setTarget(IssueVertex target) {
    this.target = target;
    getChildren().clear();
    if(target != null) appendChild(fillTarget(target));
  }
 
  private Hlayout fillTarget(IssueVertex target) {
    Hlayout layout = new Hlayout();
    if(top) {
      layout.setStyle("overflow:visible");
      top = false;
    }
    layout.setSclass("vertex-stripe vertex-group");
    if(!target.getIncoming().isEmpty()) layout.appendChild(fillSources(target));
    layout.appendChild(new VertexLabel(target));
    return layout;
  }
 
  private Vlayout fillSources(IssueVertex target) {
    Vlayout lane = new Vlayout();
    lane.setSclass("vertex-stripe vertex-lane");
    for(IssueVertex source : target.getIncoming()) {
      lane.appendChild(fillTarget(source));
    }
    return lane;
  }
  
}