104 lines
2.4 KiB
JavaScript
104 lines
2.4 KiB
JavaScript
import mxgraph from '@mxgraph/core';
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import { globalTypes } from '../.storybook/preview';
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export default {
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title: 'Layouts/Constituent',
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argTypes: {
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...globalTypes,
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contextMenu: {
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type: 'boolean',
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defaultValue: false
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},
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rubberBand: {
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type: 'boolean',
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defaultValue: true
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}
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}
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};
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const Template = ({ label, ...args }) => {
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const {
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mxGraph,
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mxEvent,
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mxGraphHandler,
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mxRubberband
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} = mxgraph;
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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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// Disables the built-in context menu
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mxEvent.disableContextMenu(container);
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class MyCustomGraphHandler extends mxGraphHandler {
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/**
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* Redirects start drag to parent.
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*/
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getInitialCellForEvent(me) {
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let cell = super.getInitialCellForEvent(me);
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if (this.graph.isPart(cell)) {
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cell = cell.getParent();
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}
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return cell;
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}
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}
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class MyCustomGraph extends mxGraph {
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foldingEnabled = false;
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recursiveResize = true;
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isPart(cell) {
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// Helper method to mark parts with constituent=1 in the style
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return this.getCurrentCellStyle(cell).constituent == '1';
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}
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selectCellForEvent(cell, evt) {
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// Redirects selection to parent
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if (this.isPart(cell)) {
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cell = cell.getParent();
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}
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super.selectCellForEvent(cell, evt);
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}
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createGraphHandler() {
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return new MyCustomGraphHandler(this);
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}
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}
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// Creates the graph inside the given container
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const graph = new MyCustomGraph(container);
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// Enables rubberband selection
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new mxRubberband(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({
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parent,
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position: [20, 20],
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size: [120, 70],
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});
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const v2 = graph.insertVertex({
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parent: v1,
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value: 'Constituent',
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position: [20, 20],
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size: [80, 30],
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style: 'constituent=1;',
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});
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});
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return container;
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}
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export const Default = Template.bind({}); |