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HTML

              
                <div id="paper-container"></div>
<div id="toolbar-container"></div>
<a target="_blank" href="https://www.jointjs.com">
  <img id="logo" src="https://assets.codepen.io/7589991/jj-logo-red.svg" width="200" height="50"></img>
</a>
              
            
!

CSS

              
                html,
body {
  margin: 0;
  padding: 0;
}

#paper-container {
  position: absolute;
  right: 0;
  top: 0;
  left: 0;
  bottom: 0;
}

#toolbar-container {
  position: absolute;
  left: 20px;
  top: 20px;
  z-index: 100;

  .joint-toolbar {
    padding: 5px;

    button::after {
      margin-left: 4px;
      text-transform: capitalize;
    }
  }
}

#logo {
  position: absolute;
  bottom: 20px;
  right: 0;
}

.jj-shape-icon,
.jj-shape-outline {
  filter: drop-shadow(2px 2px 2px rgba(0, 0, 0, 0.3));
}

.joint-link .tmp-link {
  stroke-dasharray: 5, 4;
  stroke-dashoffset: 10;
  animation: dash 0.5s infinite linear;
}

@keyframes dash {
  to {
    stroke-dashoffset: 0;
  }
}

.tool:disabled {
  pointer-events: none;
}
.tool[data-action="delete"] {
  color: #ed2637;
}
.joint-marker-vertex {
  fill: #008dd5;
  stroke: #f3f7f6;
}

              
            
!

JS

              
                // The example and `ArchiMate` expertise provided by Goodea (https://goodea.eu/).

const {
  dia,
  ui,
  util,
  highlighters,
  shapes: defaultShapes,
  elementTools,
  connectionStrategies,
  anchors
} = joint;

const baseUrl = "https://assets.codepen.io/7589991";
const color = "#FFFD77";
const borderColor = "#333333";
const textColor = "#000000";
const thickness = 2;
const linkColor = "#333333";
const bgColor = "#F3F7F6";
const hglColor = "#008DD5";
const behaviorElementRadius = 10;
const defaultResizeOptions = {
  deep: true,
  padding: { horizontal: 20, bottom: 20, top: 40 }
};
const hglOptions = {
  padding: 2,
  attrs: {
    stroke: hglColor,
    "stroke-width": 2
  }
};

const HitArea = dia.HighlighterView.extend({
  tagName: "rect",
  MOUNTABLE: false,
  attributes: {
    fill: "transparent"
    // DEBUG
    // fill: 'red',
  },
  highlight(elementView) {
    const { top = 0, left = 0, bottom = 0, right = 0 } = this.options;
    const { width, height } = elementView.model.size();
    this.el.setAttribute("x", -left);
    this.el.setAttribute("y", -top);
    this.el.setAttribute("width", left + width + right);
    this.el.setAttribute("height", top + height + bottom);
    elementView.el.prepend(this.el);
  }
});

const Link = dia.Link.define(
  "Link",
  {
    attrs: {
      root: {
        highlighterSelector: "line"
      },
      line: {
        connection: true,
        stroke: linkColor,
        strokeWidth: thickness,
        targetMarker: {
          type: "path",
          d: "M 10 -5 0 0 10 5 z"
        }
      },
      outline: {
        connection: true,
        strokeWidth: thickness + 2,
        strokeLinejoin: "round",
        stroke: bgColor
      },
      wrapper: {
        connection: true,
        strokeWidth: 10,
        strokeLinejoin: "round"
      }
    }
  },
  {
    markup: util.svg/*xml*/ `
        <path @selector="wrapper" fill="none" cursor="pointer" stroke="transparent" stroke-linecap="round"  stroke-linejoin="round" />
        <path @selector="outline" fill="none" pointer-events="none" />
        <path @selector="line" fill="none" pointer-events="none" />
    `
  }
);

function getConstructorFromType(type) {
  switch (type) {
    case "BusinessActor":
      return BusinessActor;
    case "BusinessObject":
      return BusinessObject;
    case "BusinessProcess":
      return BusinessProcess;
    default:
      return Container;
  }
}

const Icon = dia.Element.define(
  "Icon",
  {
    // no default attributes
  },
  {
    isBehaviorElement() {
      return false;
    },

    getNextVisual() {
      return Container.fromIcon(this);
    }
  },
  {
    fromContainer: function (container) {
      const ctor = getConstructorFromType(container.get("amType"));
      return new ctor({
        attrs: {
          label: {
            text: container.attr("label/text")
          }
        }
      });
    }
  }
);

// The size of the model is larger than the size of the icon.
// This is because we want to have some space around the icon
// when its embedded into a container.
const BusinessActor = Icon.define(
  "BusinessActor",
  {
    amType: "BusinessActor",
    size: { width: 100, height: 80 },
    attrs: {
      root: {
        magnetSelector: "icon",
        highlighterSelector: "icon"
      },
      icon: {
        class: "jj-shape-outline",
        y: 24,
        x: 20,
        width: "calc(w - 40)",
        height: "calc(h - 24)",
        href: `${baseUrl}/actor-icon.svg`
      },
      label: {
        text: "Business Actor",
        fill: textColor,
        textAnchor: "middle",
        textVerticalAnchor: "bottom",
        x: "calc(w / 2)",
        y: 20,
        fontSize: 12,
        fontFamily: "Arial",
        textWrap: {
          width: "calc(w)",
          height: null,
          ellipsis: true
        }
      }
    }
  },
  {
    markup: util.svg/*xml*/ `
        <text @selector="label" />
        <image @selector="icon" />
    `,

    iconURL: `${baseUrl}/actor.svg`
  }
);

const BusinessObject = Icon.define(
  "BusinessObject",
  {
    amType: "BusinessObject",
    size: { width: 80, height: 60 },
    attrs: {
      root: {
        magnetSelector: "body",
        highlighterSelector: "body"
      },
      body: {
        class: "jj-shape-outline",
        fill: color,
        stroke: borderColor,
        strokeWidth: thickness,
        d: "M 0 0 H calc(w) V calc(h) H 0 Z M 0 0 H calc(w) V 20 H 0 Z"
      },
      label: {
        text: "Business Object",
        fill: textColor,
        textAnchor: "middle",
        textVerticalAnchor: "middle",
        x: "calc(w / 2)",
        y: "calc(h / 2 + 10)",
        fontSize: 12,
        fontFamily: "Arial",
        textWrap: {
          width: "calc(w - 10)",
          height: "calc(h - 30)",
          ellipsis: true
        }
      }
    }
  },
  {
    markup: util.svg/*xml*/ `
        <path @selector="body" />
        <text @selector="label" />
    `,

    iconURL: `${baseUrl}/object.svg`
  }
);

const BusinessProcess = Icon.define(
  "BusinessProcess",
  {
    amType: "BusinessProcess",
    size: { width: 100, height: 60 },
    attrs: {
      root: {
        magnetSelector: "body",
        highlighterSelector: "body"
      },
      body: {
        class: "jj-shape-outline",
        fill: color,
        stroke: borderColor,
        strokeWidth: thickness,
        d:
          "M 0 calc(h/4) H calc(w-30) V 0 L calc(w) calc(h/2) calc(w-30) calc(h) V calc(3*h/4) H 0 Z"
      },
      label: {
        text: "Business Process",
        fill: textColor,
        textAnchor: "middle",
        textVerticalAnchor: "middle",
        x: "calc(w / 2)",
        y: "calc(h / 2)",
        fontSize: 12,
        fontFamily: "Arial",
        textWrap: {
          width: "calc(w - 30)",
          height: "calc(h - 30)",
          ellipsis: true
        }
      }
    }
  },
  {
    markup: util.svg/*xml*/ `
        <path @selector="body" />
        <text @selector="label" />
    `,

    iconURL: `${baseUrl}/process.svg`,

    isBehaviorElement() {
      return true;
    }
  }
);

const Container = dia.Element.define(
  "Container",
  {
    size: { width: 160, height: 80 },
    attrs: {
      root: {
        magnetSelector: "body",
        highlighterSelector: "body"
      },
      body: {
        class: "jj-shape-outline",
        fill: color,
        stroke: borderColor,
        strokeWidth: thickness,
        width: "calc(w)",
        height: "calc(h)"
      },
      label: {
        text: "rect",
        fill: textColor,
        textAnchor: "middle",
        textVerticalAnchor: "top",
        x: "calc(w / 2)",
        y: 5,
        fontSize: 12,
        fontFamily: "Arial",
        textWrap: {
          width: "calc(w - 60)"
        }
      },
      icon: {
        class: "jj-shape-icon",
        width: 25,
        height: 25,
        x: "calc(w - 30)",
        y: 5
      }
    }
  },
  {
    markup: util.svg/*xml*/ `
        <rect @selector="body" />
        <text @selector="label" />
        <image @selector="icon" />
    `,

    getNextVisual() {
      const ctor = getConstructorFromType(this.get("amType"));
      return ctor.fromContainer(this);
    }
  },
  {
    isContainer(element) {
      return element.get("type") === "Container";
    },

    fromIcon(icon) {
      const cornerRadius = icon.isBehaviorElement() ? behaviorElementRadius : 0;
      const container = new Container({
        amType: icon.get("amType"),
        attrs: {
          body: {
            rx: cornerRadius,
            ry: cornerRadius
          },
          label: {
            text: icon.attr("label/text")
          },
          icon: {
            href: icon.iconURL
          }
        }
      });
      return container;
    }
  }
);

const shapes = {
  ...defaultShapes,
  Link,
  Icon,
  BusinessActor,
  BusinessObject,
  BusinessProcess,
  Container
};

const graph = new dia.Graph({}, { cellNamespace: shapes });
const paper = new dia.Paper({
  model: graph,
  cellViewNamespace: shapes,
  width: "100%",
  height: "100%",
  gridSize: 5,
  async: true,
  sorting: dia.Paper.sorting.APPROX,
  background: { color: bgColor },
  // We enabled the embedding mode to let JointJS deal
  // with fixing the `z` order of elements
  // But we made all validations fail. We do the embedding ourselves
  // on `element:pointerup` event (we want to be able to cancel the embedding
  // if the user doesn't select any relationship type)
  embeddingMode: true,
  validateEmbedding: () => false,
  validateConnection: (
    cellViewS,
    magnetS,
    cellViewT,
    magnetT,
    end,
    linkView
  ) => {
    if (cellViewS === cellViewT) return false;
    const source = cellViewS.model;
    const target = cellViewT.model;
    if (source.isLink() || target.isLink()) return false;
    const relationshipTypes = getValidRelationships(source, target, "link");
    if (relationshipTypes.length === 0) return false;
    return true;
  },
  linkPinning: false,
  defaultRouter: {
    name: "orthogonal",
    args: {
      // Make space for the arrowheads
      padding: 30
    }
  },
  defaultConnectionPoint: {
    name: "boundary",
    args: {
      offset: 5
    }
  },
  defaultAnchor: (view, magnet, ref, opt, endType, linkView) => {
    if (endType === "source") {
      return anchors.modelCenter.call(
        linkView,
        view,
        magnet,
        ref,
        opt,
        endType,
        linkView
      );
    } else {
      return anchors.perpendicular.call(
        linkView,
        view,
        magnet,
        ref,
        opt,
        endType,
        linkView
      );
    }
  },
  highlighting: {
    connecting: {
      name: "mask",
      options: hglOptions
    }
  },
  viewport: (view) => {
    if (view.model.isLink()) {
      const link = view.model;
      const source = link.getSourceCell();
      const target = link.getTargetCell();
      if (!source || !target) return true;
      if (source.isEmbeddedIn(target)) return false;
      if (target.isEmbeddedIn(source)) return false;
      return true;
    }
    return true;
  },
  defaultLink: () =>
    new shapes.standard.Link({
      attrs: {
        line: {
          class: "tmp-link",
          stroke: hglColor
        }
      }
    }),
  connectionStrategy: (end, endView, endMagnet, coords, link, endType) => {
    if (endType === "source") return end;
    end.connectionPoint = { name: "anchor" };
    return connectionStrategies.pinAbsolute(
      end,
      endView,
      endMagnet,
      coords,
      link,
      endType
    );
  }
});

document.getElementById("paper-container").appendChild(paper.el);

const commandManager = new dia.CommandManager({
  graph
});

const toolbar = new ui.Toolbar({
  tools: [
    { type: "undo", text: "↩" },
    { type: "redo", text: "↪" },
    { type: "button", name: "help", text: "﹖ Help" }
  ],
  references: {
    commandManager
  },
  autoToggle: true
});

document.getElementById("toolbar-container").appendChild(toolbar.el);
toolbar.render();

toolbar.on("help:pointerdown", () => {
  const helpDialog = new ui.Dialog({
    content: /* html */ `
            <h3>The ArchiMate® Enterprise Architecture Modeling Language</h3>
            <h4>What is it?</h4>
            <p>
                <a href="https://www.opengroup.org/archimate-forum/archimate-overview" target="_blank">ArchiMate</a> is an enterprise architecture modeling language that provides a framework for describing, analyzing, and visualizing the relationships among business domains in an enterprise.
            </p>
            <p>
                This example shows only a subset of the <i>ArchiMate</i> language. Specifically, it is the <b>Business Layer</b>, which is one of the three layers of the language.
                <br>
                The <i>Business Layer</i> describes the organizational structure of an enterprise at the level of business units and their internal collaborations.
            </p>
            <h4>How to use it?</h4>
            <p>
                <style>
                    li { margin: 10px; }
                    li i { color: ${hglColor}; }
                </style>
                <ul>
                    <li>You can add new elements to the diagram by right-clicking on the canvas and selecting the element type from the context menu
                        (the example implements only three element types: <i>Business Actor</i>, <i>Business Object</i>, and <i>Business Process</i>).
                    </li>
                    <li>You can connect two elements by:
                        <ul>
                            <li>dragging the connection icon (<span style="color:white;background:${hglColor};margin:2px;">⮕</span>) of one element to the other element (and create an <i>explicit</i> connection).
                        </li>
                            <li>dragging an element onto another element (and create an <i>implicit</i> connection).</li>
                        </ul>
                        The type of connection is to be selected from the context menu immediately after connecting the element.
                    </li>
                    <li>You can switch between the <i>implicit</i> and <i>explicit</i> connections by embedding/unembedding the elements into/from containers.</li>
                    <li>You can right-click on an element to open the context menu to:
                        <ul>
                            <li>Change the <i>visual</i> of the element (each element can be represented in two ways).</li>
                            <li>Delete the element.</li>
                            <li>Resize the container.</li>
                        </ul>
                    </li>
                    <li>You can right-click on a link to open the context menu to delete the link.</li>
                </ul>

            </p>

            <i>The example and expertise provided by <a href="https://goodea.eu/" target="_blank">Goodea</a>.</i>
        `
  });
  helpDialog.open();
});

const snaplines = new ui.Snaplines({
  theme: "material",
  filter: ["Container"],
  paper
});

const relationshipTemplates = {
  assignment: new Link({
    amType: "assignment",
    attrs: {
      line: {
        strokeWidth: thickness,
        sourceMarker: {
          type: "circle",
          r: 2
        },
        targetMarker: {
          type: "circle",
          r: 2
        }
      }
    }
  }),
  access: new Link({
    amType: "access",
    attrs: {
      line: {
        strokeWidth: thickness,
        strokeDasharray: "3 3",
        targetMarker: {
          type: "path",
          d: "M 10 -5 0 0 10 5 4 0 z"
        }
      }
    }
  }),
  aggregation: new Link({
    amType: "aggregation",
    attrs: {
      line: {
        strokeWidth: thickness,
        targetMarker: {
          type: "path",
          fill: "white",
          "stroke-width": 2,
          d: "M 10 -5 0 0 10 5 20 0 z"
        }
      }
    }
  }),
  composition: new Link({
    amType: "composition",
    attrs: {
      line: {
        strokeWidth: thickness,
        targetMarker: {
          type: "path",
          "stroke-width": 2,
          d: "M 10 -5 0 0 10 5 20 0 z"
        }
      }
    }
  }),
  specialization: new shapes.standard.Link({
    amType: "specialization",
    attrs: {
      line: {
        strokeWidth: thickness,
        targetMarker: {
          type: "path",
          fill: "white",
          "stroke-width": 2,
          d: "M 15 -7 0 0 15 7 z"
        }
      }
    }
  }),
  association: new shapes.standard.Link({
    amType: "association",
    attrs: {
      line: {
        strokeWidth: thickness,
        targetMarker: null
      }
    }
  }),
  serving: new shapes.standard.Link({
    amType: "serving",
    attrs: {
      line: {
        strokeWidth: thickness,
        targetMarker: {
          type: "path",
          "stroke-width": thickness,
          fill: "none",
          d: "M 10 -5 0 0 10 5"
        }
      }
    }
  }),
  flow: new shapes.standard.Link({
    amType: "flow",
    attrs: {
      line: {
        strokeWidth: thickness,
        strokeDasharray: "6 1",
        targetMarker: {
          type: "path",
          d: "M 8 -5 0 0 8 5 z"
        }
      }
    }
  }),
  triggering: new shapes.standard.Link({
    amType: "triggering",
    attrs: {
      line: {
        strokeWidth: thickness,
        targetMarker: {
          type: "path",
          d: "M 8 -5 0 0 8 5 z"
        }
      }
    }
  })
};

const validRelationships = {
  BusinessActor: {
    BusinessActor: {
      nesting: ["aggregation", "composition", "specialization"],
      link: [
        "aggregation",
        "composition",
        "specialization",
        "serving",
        "triggering",
        "flow",
        "association"
      ]
    },
    BusinessObject: {
      nesting: [],
      link: ["access", "association"]
    },
    BusinessProcess: {
      nesting: [],
      link: ["assignment", "serving", "triggering", "flow", "association"]
    }
  },
  BusinessObject: {
    BusinessActor: {
      nesting: ["access"],
      link: ["association"]
    },
    BusinessObject: {
      nesting: ["aggregation", "composition", "specialization"],
      link: ["aggregation", "composition", "specialization", "association"]
    },
    BusinessProcess: {
      nesting: ["access"],
      link: ["association"]
    }
  },
  BusinessProcess: {
    BusinessActor: {
      nesting: ["assignment"],
      link: ["serving", "flow", "triggering", "association"]
    },
    BusinessObject: {
      nesting: [],
      link: ["access", "association"]
    },
    BusinessProcess: {
      nesting: ["aggregation", "composition", "specialization"],
      link: [
        "aggregation",
        "composition",
        "specialization",
        "serving",
        "flow",
        "triggering",
        "association"
      ]
    }
  }
};

// Events

const verticesTool = new joint.linkTools.Vertices();
const linkToolsView = new joint.dia.ToolsView({
  z: 1,
  tools: [verticesTool]
});

paper.on("link:mouseenter", (linkView) => {
  linkView.addTools(linkToolsView);
});

paper.on("link:mouseleave", (linkView) => {
  linkView.removeTools();
});

paper.on("element:mouseenter", (elementView) => {
  const element = elementView.model;
  paper.removeTools();
  highlighters.mask.removeAll(paper, "hgl-hover");
  HitArea.removeAll(paper);
  // Show frame around the element
  const selector = element.attr("root/highlighterSelector");
  highlighters.mask.add(elementView, selector, "hgl-hover", hglOptions);
  // Show the link tools
  let y,
    bottom = 5,
    left = 5,
    right = 5,
    top = 5;
  switch (element.get("type")) {
    case "BusinessProcess":
      y = "calc(h)";
      bottom = 16;
      top = 16;
      break;
    case "BusinessActor":
      y = "calc(h + 14)";
      left = -15;
      right = -15;
      bottom = 30;
      break;
    case "BusinessObject":
    case "Container":
    default:
      y = "calc(h + 14)";
      bottom = 30;
      break;
  }
  const elementToolsView = new dia.ToolsView({
    z: 2,
    tools: [
      new elementTools.Connect({
        scale: 1.6,
        markup: util.svg/* xml */ `
                    <rect x="-5" y="-5" width="10" height="10" fill="${hglColor}" stroke="${bgColor}" paint-order="stroke" />
                    <path
                        d="M -4 -1 L 0 -1 L 0 -4 L 4 0 L 0 4 0 1 -4 1 z"
                        fill="#fff"
                    />
                `,
        x: "calc(w / 2)",
        y
      })
    ]
  });
  // Make sure that user can reach the tools
  HitArea.add(elementView, "root", "hit-area", { top, bottom, left, right });
  elementView.addTools(elementToolsView);
  // Add the tools and the highlighter synchronously.
  paper.requireView(element);
});

// paper.on('element:mouseleave', (elementView) => {
//     highlighters.mask.remove(elementView, 'hgl-hover');
//     HitArea.remove(elementView, 'hit-area');
// });

paper.on("blank:mouseover", () => {
  paper.removeTools();
  highlighters.mask.removeAll(paper, "hgl-hover");
  HitArea.removeAll(paper);
});

paper.on("link:connect", (linkView, evt) => {
  const dummyLink = linkView.model;

  const source = dummyLink.getSourceCell();
  const target = dummyLink.getTargetCell();
  const relationshipTypes = getValidRelationships(source, target, "link");
  if (relationshipTypes.length === 0) {
    dummyLink.remove();
    return;
  }

  const contextMenu = new joint.ui.ContextToolbar({
    target: { x: evt.clientX, y: evt.clientY },
    root: paper.el,
    vertical: true,
    anchor: "top-left",
    tools: relationshipTypes.map((relationshipType) => ({
      action: relationshipType,
      content: `Add <b>${capitalize(relationshipType)}</b>`
    }))
  });

  contextMenu.render();
  commandManager.initBatchCommand();

  contextMenu.on({
    all: (eventName, evt) => {
      if (!eventName.startsWith("action:")) return;
      const [, amType] = eventName.split(":");
      const link = relationshipTemplates[amType].clone();
      const { id: targetId } = dummyLink.target();
      link.source(dummyLink.source());
      link.target({ id: targetId });
      dummyLink.remove();
      graph.addCell(link);
      contextMenu.remove();
      commandManager.storeBatchCommand();
    },
    close: () => {
      dummyLink.remove();
      commandManager.storeBatchCommand();
    }
  });
});

paper.on("blank:contextmenu", (evt) => {
  const contextMenu = new joint.ui.ContextToolbar({
    target: { x: evt.clientX, y: evt.clientY },
    root: paper.el,
    vertical: true,
    anchor: "top-left",
    tools: [
      {
        action: "BusinessActor",
        content: "Add <b>Actor</b>"
      },
      {
        action: "BusinessObject",
        content: "Add <b>Object</b>"
      },
      {
        action: "BusinessProcess",
        content: "Add <b>Process</b>"
      }
    ]
  });

  contextMenu.render();
  contextMenu.on({
    all: (eventName, evt) => {
      if (!eventName.startsWith("action:")) return;
      const [, amType] = eventName.split(":");
      const ctor = getConstructorFromType(amType);
      const element = new ctor();
      const size = element.size();
      const position = paper.clientToLocalPoint({
        x: evt.clientX,
        y: evt.clientY
      });
      element.position(
        position.x - size.width / 2,
        position.y - size.height / 2
      );
      graph.addCell(element);
      contextMenu.remove();
    }
  });
});

paper.on({
  "element:pointerdown": (elementView, evt) => {
    ui.ContextToolbar.close();
    elementView.el.style.opacity = 0.5;
  },
  "element:pointermove": (elementView, evt) => {
    highlighters.mask.removeAll(paper);
    const element = elementView.model;
    const parent = graph.findModelsUnderElement(element).at(-1);
    if (parent) {
      const availableRelationships = getAvailableRelationships(
        element,
        parent,
        "nesting"
      );
      if (availableRelationships.length === 0) return;
      const selector = parent.attr("root/highlighterSelector");
      highlighters.mask.add(
        parent.findView(paper),
        selector,
        "parent-preview",
        hglOptions
      );
    }
  },
  "element:pointerup": (elementView, evt) => {
    elementView.el.style.opacity = "";

    const element = elementView.model;
    const parent = graph.findModelsUnderElement(element).at(-1);
    if (!parent) return;

    const availableRelationships = getAvailableRelationships(
      element,
      parent,
      "nesting"
    );
    if (availableRelationships.length === 0) {
      if (getValidRelationships(element, parent, "nesting").length > 0) {
        // There is already a relationship between the two elements
        embedElement(element, parent);
      }
      highlighters.mask.removeAll(paper);
      return;
    }

    const contextMenu = new joint.ui.ContextToolbar({
      target: { x: evt.clientX, y: evt.clientY },
      root: paper.el,
      vertical: true,
      anchor: "top-left",
      tools: availableRelationships.map((relationshipType) => ({
        action: relationshipType,
        content: `Add <b>${capitalize(relationshipType)}</b>`
      }))
    });

    contextMenu.render();
    commandManager.initBatchCommand();

    contextMenu.on({
      all: (eventName, evt) => {
        if (!eventName.startsWith("action:")) return;
        const [, relationshipType] = eventName.split(":");
        const container = embedElement(element, parent);
        const link = relationshipTemplates[relationshipType].clone();
        link.source(element);
        link.target(container);
        graph.addCell(link);
        link.toFront();

        highlighters.mask.removeAll(paper, "parent-preview");
        contextMenu.remove();
        commandManager.storeBatchCommand();
      },
      close: () => {
        highlighters.mask.removeAll(paper, "parent-preview");
        commandManager.storeBatchCommand();
      }
    });
  }
});

paper.on("element:contextmenu", (elementView, evt) => {
  const element = elementView.model;
  const hasChildren = element.getEmbeddedCells().length > 0;
  const tools = [
    {
      action: "toggle-visual",
      content: "Toggle Visual",
      attrs: {
        disabled: hasChildren
      }
    },
    {
      action: "delete",
      content: "Delete"
    }
  ];

  if (Container.isContainer(element)) {
    tools.splice(1, 0, {
      action: "resize-container",
      content: hasChildren ? "Set Minimal Size" : "Set Default Size"
    });
  }

  const contextMenu = new ui.ContextToolbar({
    // target: elementView.el,
    target: { x: evt.clientX, y: evt.clientY },
    root: paper.el,
    vertical: true,
    anchor: "top-left",
    tools
  });

  selectElement(paper, element);

  contextMenu.render();
  contextMenu.on({
    "action:toggle-visual": () => {
      commandManager.initBatchCommand();
      toggleVisual(element, element.getNextVisual());
      contextMenu.remove();
      commandManager.storeBatchCommand();
    },
    "action:delete": () => {
      element.remove();
      contextMenu.remove();
    },
    "action:resize-container": () => {
      wrapElementAroundChildren(element);
      contextMenu.remove();
    },
    close: () => {
      unselectElements(paper);
    }
  });
});

paper.on("link:contextmenu", (linkView, evt) => {
  const link = linkView.model;

  const contextMenu = new ui.ContextToolbar({
    target: { x: evt.clientX, y: evt.clientY },
    root: paper.el,
    vertical: true,
    anchor: "top-left",
    tools: [
      {
        action: "delete",
        content: "Delete"
      }
    ]
  });

  selectElement(paper, link);

  contextMenu.render();
  contextMenu.on({
    "action:delete": () => {
      link.remove();
      contextMenu.remove();
    },
    close: () => {
      unselectElements(paper);
    }
  });
});

// Functions

function wrapAncestorsAroundElement(element, opt = {}) {
  element.fitParent({ ...defaultResizeOptions, ...opt });
}

function wrapElementAroundChildren(element, opt = {}) {
  if (element.getEmbeddedCells().length === 0) {
    const { width, height } = Container.prototype.defaults.size;
    const center = element.getBBox().center();
    element.startBatch("resize");
    element.position(center.x - width / 2, center.y - height / 2);
    element.resize(width, height);
    element.stopBatch("resize");
  } else {
    element.fitToChildren({ ...defaultResizeOptions, ...opt });
  }
}

function capitalize(string) {
  return string.charAt(0).toUpperCase() + string.slice(1);
}

function embedElement(element, parent) {
  parent.embed(element);
  let container = parent;
  if (!Container.isContainer(parent)) {
    // The parent must be a container
    container = toggleVisual(parent, Container.fromIcon(parent));
  }
  wrapAncestorsAroundElement(element, { expandOnly: true });
  return container;
}

function getValidRelationships(source, target, type) {
  const sourceType = source.get("amType");
  const targetType = target.get("amType");
  const relationshipDef =
    validRelationships[sourceType] &&
    validRelationships[sourceType][targetType];
  if (!relationshipDef) {
    throw new Error("Relationship not defined.");
  }
  return relationshipDef[type] || [];
}

function getAvailableRelationships(source, target, type) {
  const validRelationships = getValidRelationships(source, target, type);
  const currentRelationships = getExistingRelationships(source, target);
  if (util.intersection(validRelationships, currentRelationships).length > 0)
    return [];
  return validRelationships;
}

function getExistingRelationships(source, target) {
  const links = graph.getConnectedLinks(source);
  return links
    .filter((link) => {
      const sourceCell = link.getSourceCell();
      const targetCell = link.getTargetCell();
      return (
        (sourceCell === source && targetCell === target) ||
        (sourceCell === target && targetCell === source)
      );
    })
    .map((link) => link.get("amType"));
}

function toggleVisual(element1, element2) {
  const el1BBox = element1.getBBox();
  const el2Size = element2.size();
  element2.position(
    el1BBox.x + el1BBox.width / 2 - el2Size.width / 2,
    el1BBox.y + el1BBox.height / 2 - el2Size.height / 2
  );
  element2.set("z", element1.z());
  graph.addCell(element2);
  // Reconnect links
  const outLinks = graph.getConnectedLinks(element1, { inbound: true });
  outLinks.forEach((link) => {
    link.target({ id: element2.id });
  });
  const inLinks = graph.getConnectedLinks(element1, { outbound: true });
  inLinks.forEach((link) => {
    link.source({ id: element2.id });
  });
  // Insert the element into previous parent
  const parent = element1.getParentCell();
  if (parent) {
    parent.embed(element2);
    wrapAncestorsAroundElement(element2, { expandOnly: true });
  }
  // Reinsert children
  const children = element1.getEmbeddedCells();
  children.forEach((child) => {
    element1.unembed(child);
    element2.embed(child);
  });
  // Remove old element
  element1.remove();
  return element2;
}

function selectElement(paper, element) {
  highlighters.mask.add(
    element.findView(paper),
    element.attr("root/highlighterSelector"),
    "selection",
    {
      attrs: {
        stroke: hglColor,
        "stroke-width": 2
      }
    }
  );
}

function unselectElements(paper) {
  highlighters.mask.removeAll(paper, "selection");
}

// Example graph

commandManager.stopListening();

const actor1 = new BusinessActor({
  position: { x: 90, y: 100 },
  attrs: {
    label: {
      text: "Direct Banking"
    }
  }
});

const actor2 = new BusinessActor({
  position: { x: 290, y: 100 },
  attrs: {
    label: {
      text: "Extraordinary Loan Instalments"
    }
  }
});

const actor3 = new BusinessActor({
  position: { x: 490, y: 100 },
  attrs: {
    label: {
      text: "Payment and Settlement"
    }
  }
});

const process1 = new BusinessProcess({
  position: { x: 90, y: 300 },
  attrs: {
    label: {
      text: "Client Authentication"
    }
  }
});

const process2 = new BusinessProcess({
  position: { x: 290, y: 300 },
  attrs: {
    label: {
      text: "Credit Risk Assessment"
    }
  }
});

const process3 = new BusinessProcess({
  position: { x: 490, y: 300 },
  attrs: {
    label: {
      text: "Loan Repayment"
    }
  }
});

const object1 = new BusinessObject({
  position: { x: 100, y: 500 },
  attrs: {
    label: {
      text: "List of Clients"
    }
  }
});

const object2 = new BusinessObject({
  position: { x: 300, y: 500 },
  attrs: {
    label: {
      text: "Register of Debtors"
    }
  }
});

const object3 = new BusinessObject({
  position: { x: 500, y: 500 },
  attrs: {
    label: {
      text: "Payment Order"
    }
  }
});
const process4 = Container.fromIcon(
  new BusinessProcess({
    position: { x: 600, y: 200 },
    attrs: {
      label: {
        text: "Granting Consumer Loans"
      }
    }
  })
);

graph.addCells([
  process4,
  actor1,
  actor2,
  actor3,
  object1,
  object2,
  object3,
  process1,
  process2,
  process3
]);

process4.embed([process1, process2, process3]);
wrapElementAroundChildren(process4);

const access1 = relationshipTemplates.access
  .clone()
  .source(process1)
  .target(object1);
const access2 = relationshipTemplates.access
  .clone()
  .source(process2)
  .target(object2);
const access3 = relationshipTemplates.access
  .clone()
  .source(process3)
  .target(object3);

const assignment1 = relationshipTemplates.assignment
  .clone()
  .source(actor1)
  .target(process1);
const assignment2 = relationshipTemplates.assignment
  .clone()
  .source(actor2)
  .target(process2);
const assignment3 = relationshipTemplates.assignment
  .clone()
  .source(actor3)
  .target(process3);

const aggregation1 = relationshipTemplates.aggregation
  .clone()
  .source(process1)
  .target(process4);
const aggregation2 = relationshipTemplates.aggregation
  .clone()
  .source(process2)
  .target(process4);
const aggregation3 = relationshipTemplates.aggregation
  .clone()
  .source(process3)
  .target(process4);

graph.addCells([
  access1,
  access2,
  access3,
  assignment1,
  assignment2,
  assignment3,
  aggregation1,
  aggregation2,
  aggregation3
]);

graph.getLinks().forEach((link) => link.reparent());

commandManager.listen();

              
            
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999px

Console