bundles/org.simantics.modeling.template2d.ui/src/org/simantics/modeling/template2d/ui/diagram/adapter/DrawingTemplateStyle.java

   1 /*******************************************************************************
   2  * Copyright (c) 2012 Association for Decentralized Information Management in
   3  * Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.modeling.template2d.ui.diagram.adapter;
  13
  14 import org.simantics.db.ReadGraph;
  15 import org.simantics.db.Resource;
  16 import org.simantics.db.exception.DatabaseException;
  17 import org.simantics.db.layer0.variable.Variable;
  18 import org.simantics.diagram.profile.StyleBase;
  19 import org.simantics.g2d.scenegraph.SceneGraphConstants;
  20 import org.simantics.modeling.template2d.ontology.Template2dResource;
  21 import org.simantics.modeling.template2d.ui.function.All;
  22 import org.simantics.scenegraph.INode;
  23 import org.simantics.scenegraph.g2d.G2DParentNode;
  24 import org.simantics.scenegraph.g2d.G2DSceneGraph;
  25 import org.simantics.scenegraph.g2d.nodes.SingleElementNode;
  26 import org.simantics.scenegraph.loader.ScenegraphLoaderProcess;
  27 import org.simantics.scenegraph.profile.DataNodeMap;
  28 import org.simantics.scenegraph.profile.EvaluationContext;
  29 import org.simantics.scenegraph.profile.common.ProfileVariables;
  30
  31
  32 public class DrawingTemplateStyle extends StyleBase<INode> {
  33
  34         private static final String PAGE_TEMPLATE_NODE_NAME = "pageTemplate";
  35
  36         private static Resource getTemplateScenegraph(ReadGraph graph, Resource runtimeDiagram) throws DatabaseException {
  37                 Template2dResource TEMPLATE2D = Template2dResource.getInstance(graph);
  38                 Resource template = All.getTemplate(graph, runtimeDiagram);
  39                 if (template == null)
  40                         return null;
  41                 return graph.getPossibleObject(template, TEMPLATE2D.HasScenegraph);
  42         }
  43
  44         @Override
  45         public INode calculateStyle(ReadGraph graph, Resource runtimeDiagram, Resource entry, Resource groupItem, Variable activeComposite)
  46                         throws DatabaseException {
  47                 Resource sceneGraph = DrawingTemplateStyle.getTemplateScenegraph(graph, runtimeDiagram);
  48                 if (sceneGraph == null)
  49                         return null;
  50                 ScenegraphLoaderProcess loader = new ScenegraphLoaderProcess(new G2DParentNode(), "TemplateStyle.calculate");
  51                 return loader.load(graph, sceneGraph, runtimeDiagram);
  52         }
  53
  54         @Override
  55         public void applyStyleForItem(EvaluationContext evaluationContext, DataNodeMap map, Object item, INode node) {
  56                 if (node == null)
  57                         return;
  58
  59                 G2DSceneGraph sg = evaluationContext.getSceneGraph();
  60                 if (sg == null)
  61                         return;
  62                 G2DParentNode nav = (G2DParentNode) sg.getNode(SceneGraphConstants.NAVIGATION_NODE_NAME);
  63                 if (nav == null)
  64                         return;
  65
  66                 SingleElementNode pageTemplate = ProfileVariables.claimChild(evaluationContext.getSceneGraph(),
  67                                 SceneGraphConstants.NAVIGATION_NODE_NAME, PAGE_TEMPLATE_NODE_NAME, SingleElementNode.class,
  68                                 evaluationContext);
  69
  70                 if (pageTemplate == null)
  71                         return;
  72
  73                 pageTemplate.setZIndex(1);
  74                 pageTemplate.setVisible(true);
  75
  76                 // Switch template contents if the contents are not exactly the same.
  77                 INode previous = pageTemplate.getNode("structure");
  78                 if (previous != node) {
  79                         pageTemplate.detachNode("structure");
  80                         pageTemplate.attachNode("structure", node);
  81                 }
  82         }
  83
  84         @Override
  85         protected void cleanupStyleForItem(EvaluationContext evaluationContext, DataNodeMap map, Object item) {
  86                 G2DSceneGraph sg = evaluationContext.getSceneGraph();
  87                 if (sg == null)
  88                         return;
  89                 G2DParentNode nav = (G2DParentNode) sg.getNode(SceneGraphConstants.NAVIGATION_NODE_NAME);
  90                 if (nav == null)
  91                         return;
  92
  93                 G2DParentNode pageTemplate = (G2DParentNode) nav.getNode(PAGE_TEMPLATE_NODE_NAME);
  94                 if (pageTemplate == null)
  95                         return;
  96
  97                 pageTemplate.detachNode("structure");
  98                 ProfileVariables.denyChild(evaluationContext.getSceneGraph(),
  99                                 SceneGraphConstants.NAVIGATION_NODE_NAME, PAGE_TEMPLATE_NODE_NAME);
 100         }
 101
 102         @Override
 103         public String toString() {
 104                 return "Template";
 105         }
 106
 107 }