maxGraph/packages/html/stories/HelloPort.stories.js

/*
Copyright 2021-present The maxGraph project Contributors
Copyright (c) 2006-2020, JGraph Ltd

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

import {
  Client,
  DomHelpers,
  EdgeStyle,
  Graph,
  MaxWindow,
  Point,
  RubberBandHandler,
  xmlUtils,
} from '@maxgraph/core';

import {
  globalTypes,
  globalValues,
  rubberBandTypes,
  rubberBandValues,
} from './shared/args.js';
// style required by RubberBand
import '@maxgraph/core/css/common.css';

export default {
  title: 'Connections/HelloPort',
  argTypes: {
    ...globalTypes,
    ...rubberBandTypes,
  },
  args: {
    ...globalValues,
    ...rubberBandValues,
  },
};

const Template = ({ label, ...args }) => {
  Client.setImageBasePath('/images');

  const div = document.createElement('div');

  const container = document.createElement('div');
  container.style.position = 'relative';
  container.style.overflow = 'hidden';
  container.style.width = `${args.width}px`;
  container.style.height = `${args.height}px`;
  container.style.background = 'url(/images/grid.gif)';
  container.style.cursor = 'default';
  div.appendChild(container);

  // Creates the graph inside the given container
  const graph = new Graph(container);
  graph.setConnectable(true);
  graph.setTooltips(true);

  // Sets the default edge style
  const style = graph.getStylesheet().getDefaultEdgeStyle();
  style.edge = EdgeStyle.ElbowConnector;

  // Ports are not used as terminals for edges, they are
  // only used to compute the graphical connection point
  graph.isPort = function (cell) {
    const geo = cell.getGeometry();

    return geo != null ? geo.relative : false;
  };

  // Implements a tooltip that shows the actual
  // source and target of an edge
  graph.getTooltipForCell = function (cell) {
    if (cell.isEdge()) {
      return `${this.convertValueToString(
        cell.getTerminal(true)
      )} => ${this.convertValueToString(cell.getTerminal(false))}`;
    }

    return Graph.prototype.getTooltipForCell.apply(this, arguments);
  };

  // Removes the folding icon and disables any folding
  graph.isCellFoldable = function (cell) {
    return false;
  };

  // Enables rubberband selection
  if (args.rubberBand) new RubberBandHandler(graph);

  // Gets the default parent for inserting new cells. This
  // is normally the first child of the root (ie. layer 0).
  const parent = graph.getDefaultParent();

  // Adds cells to the model in a single step
  graph.batchUpdate(() => {
    const v1 = graph.insertVertex(parent, null, 'Hello', 20, 80, 80, 30);
    v1.setConnectable(false);
    const v11 = graph.insertVertex(v1, null, '', 1, 1, 10, 10);
    v11.geometry.offset = new Point(-5, -5);
    v11.geometry.relative = true;
    const v12 = graph.insertVertex(v1, null, '', 1, 0, 10, 10);
    v12.geometry.offset = new Point(-5, -5);
    v12.geometry.relative = true;
    const v2 = graph.insertVertex(parent, null, 'World!', 200, 150, 80, 30);
    const v3 = graph.insertVertex(parent, null, 'World2', 200, 20, 80, 30);
    var e1 = graph.insertEdge(parent, null, '', v11, v2);
    var e1 = graph.insertEdge(parent, null, '', v12, v3);
  });

  const controller = document.createElement('div');
  div.appendChild(controller);

  const button = DomHelpers.button('View XML', function () {
    const encoder = new Codec();
    const node = encoder.encode(graph.getDataModel());
    MaxWindow.popup(xmlUtils.getPrettyXml(node), true);
  });

  controller.appendChild(button);

  return div;
};

export const Default = Template.bind({});