92 lines
2.4 KiB
JavaScript
92 lines
2.4 KiB
JavaScript
import {
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Graph,
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ObjectCodec,
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DomHelpers,
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CodecRegistry,
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InternalEvent,
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Client,
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Codec,
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domUtils,
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xmlUtils,
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popup,
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} from '@maxgraph/core';
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import { globalTypes } from '../.storybook/preview';
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export default {
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title: 'Xml_Json/JsonData',
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argTypes: {
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...globalTypes,
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},
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};
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const Template = ({ label, ...args }) => {
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Client.setImageBasePath('/images');
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const div = document.createElement('div');
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const container = document.createElement('div');
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container.style.position = 'relative';
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container.style.overflow = 'hidden';
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container.style.width = `${args.width}px`;
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container.style.height = `${args.height}px`;
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container.style.background = 'url(/images/grid.gif)';
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container.style.cursor = 'default';
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div.appendChild(container);
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// Register a new codec
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function CustomData(value) {
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this.value = value;
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}
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const codec = new ObjectCodec(new CustomData());
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codec.encode = function (enc, obj) {
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const node = enc.document.createElement('CustomData');
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domUtils.setTextContent(node, JSON.stringify(obj));
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return node;
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};
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codec.decode = function (dec, node, into) {
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const obj = JSON.parse(domUtils.getTextContent(node));
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obj.constructor = CustomData;
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return obj;
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};
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CodecRegistry.register(codec);
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// Disables the built-in context menu
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if (!args.contextMenu) InternalEvent.disableContextMenu(container);
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// Creates the graph inside the given container
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const graph = new Graph(container);
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// Enables rubberband selection
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if (args.rubberBand) new RubberBandHandler(graph);
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// Gets the default parent for inserting new cells. This
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// is normally the first child of the root (ie. layer 0).
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const parent = graph.getDefaultParent();
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// Adds cells to the model in a single step
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graph.batchUpdate(() => {
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const v1 = graph.insertVertex(parent, null, 'Hello,', 20, 20, 80, 30);
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v1.data = new CustomData('v1');
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const v2 = graph.insertVertex(parent, null, 'World!', 200, 150, 80, 30);
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v2.data = new CustomData('v2');
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const e1 = graph.insertEdge(parent, null, '', v1, v2);
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});
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const buttons = document.createElement('div');
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div.appendChild(buttons);
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buttons.appendChild(
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DomHelpers.button('Show JSON', function () {
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const encoder = new Codec();
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const node = encoder.encode(graph.getDataModel());
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popup(xmlUtils.getXml(node), true);
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})
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);
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return div;
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};
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export const Default = Template.bind({});
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