Examples of org.eclipse.zest.layouts.exampleStructures.SimpleRelationship

Package org.eclipse.zest.layouts.exampleStructures

Examples of org.eclipse.zest.layouts.exampleStructures.SimpleRelationship

org.eclipse.zest.layouts.exampleStructures.SimpleRelationship
The SimpleRelation class describes the relationship between two objects: source and destination. Each relationship has a weight and direction associated with it. Note: The source object is at the beginning of the relationship. Note: The destination object is at the end of the relationship. @version 2.0 @author Casey Best (version 1.0 by Jingwei Wu) @author Chris Bennett


    SimpleNode currentParent = createSimpleNode(getNextID());
    entities.add(currentParent);


    // ccallendar - adding relationships from the parent to the 2 roots
    SimpleRelationship rel = new SimpleRelationship(root, currentParent, false);
    root.addRelationship(rel);
    currentParent.addRelationship(rel);
    relationships.add(rel);
    rel = new SimpleRelationship(root2, currentParent, false);
    root2.addRelationship(rel);
    currentParent.addRelationship(rel);
    relationships.add(rel);
    // end

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    int numChildren = random ? (int) (Math.random() * maxChildren + 1) : maxChildren;
    for (int child = 0; child < numChildren; child++) {
      SimpleNode childNode = createSimpleNode(getNextID());
      entities.add(childNode);
      SimpleRelationship rel = new SimpleRelationship(currentParentNode, childNode, false);
      childNode.addRelationship(rel);
      currentParentNode.addRelationship(rel);
      relationships.add(rel);
      SimpleRelationship.setDefaultSize(2);
      createTreeGraphRecursive(childNode, maxChildren, maxLevel, level + 1, random);

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      GC gcBuffer = new GC(imageBuffer);


      // paint the relationships 
      for (Iterator iter = relationships.iterator(); iter.hasNext();) {
        SimpleRelationship rel = (SimpleRelationship) iter.next();
        SimpleNode src = (SimpleNode) rel.getSourceInLayout();
        SimpleNode dest = (SimpleNode) rel.getDestinationInLayout();


        // highlight the adjacent nodes if one of the nodes is selected
        if (src.equals(selectedEntity)) {
          dest.setAdjacent();
          rel.setSelected();
        } else if (dest.equals(selectedEntity)) {
          src.setAdjacent();
          rel.setSelected();
        } else {
          rel.setUnSelected();
        }


        // Add bend points if required
        if ((rel).getBendPoints() != null && (rel).getBendPoints().length > 0) {
          src = drawBendPoints(rel, gcBuffer); // change source to last bendpoint

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    for (int i = 0; i < numChildren; i++) {
      LayoutEntity newNode = createSimpleNode(getNextID());
      entities.add(newNode);
      if (addNonTreeRels && entities.size() % 5 == 0) {
        int index = (int) (Math.random() * entities.size());
        LayoutRelationship rel = new SimpleRelationship((LayoutEntity) entities.get(index), newNode, false);
        relationships.add(rel);
      }
      LayoutRelationship rel = new SimpleRelationship(currentParentNode, newNode, false);
      relationships.add(rel);
      createTreeGraphRecursive(newNode, minChildren, maxChildren, minLevel, maxLevel, level + 1, randomNumChildren, randomLevels, addNonTreeRels);
    }
  }

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    nodesChecked.add(nodeToCheck);


    List relations = (List) endPoints.get(nodeToCheck);
    if (relations != null) {
      for (Iterator iter = relations.iterator(); iter.hasNext();) {
        SimpleRelationship rel = (SimpleRelationship) iter.next();


        if (cameFrom == null || !rel.equals(cameFrom)) {
          Object currentNode = null;
          currentNode = rel.getDestinationInLayout();
          if (hasCycle(currentNode, nodePathSoFar, rel, endPoints, nodesChecked, cycle)) {
            return true;
          }
        }

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