147 lines
4.0 KiB
JavaScript
147 lines
4.0 KiB
JavaScript
import {
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Graph,
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KeyHandler,
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mathUtils,
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domUtils,
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cloneUtils,
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eventUtils,
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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: 'Editing/Editing',
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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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const div = document.createElement('div');
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div.innerHTML = `
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Double-click the upper/lower half of the cell to edit different fields
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of the user object.
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`;
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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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class MyCustomGraph extends Graph {
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getLabel(cell) {
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// Returns a HTML representation of the cell where the
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// upper half is the first value, lower half is second
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// value
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const table = document.createElement('table');
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table.style.height = '100%';
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table.style.width = '100%';
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const body = document.createElement('tbody');
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const tr1 = document.createElement('tr');
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const td1 = document.createElement('td');
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td1.style.textAlign = 'center';
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td1.style.fontSize = '12px';
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td1.style.color = '#774400';
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domUtils.write(td1, cell.value.first);
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const tr2 = document.createElement('tr');
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const td2 = document.createElement('td');
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td2.style.textAlign = 'center';
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td2.style.fontSize = '12px';
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td2.style.color = '#774400';
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domUtils.write(td2, cell.value.second);
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tr1.appendChild(td1);
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tr2.appendChild(td2);
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body.appendChild(tr1);
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body.appendChild(tr2);
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table.appendChild(body);
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return table;
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}
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getEditingValue(cell, evt) {
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// Returns the editing value for the given cell and event
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evt.fieldname = this.__getFieldnameForEvent(cell, evt);
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return cell.value[evt.fieldname] || '';
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}
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__getFieldnameForEvent(cell, evt) {
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// Helper method that returns the fieldname to be used for
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// a mouse event
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if (evt != null) {
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// Finds the relative coordinates inside the cell
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const point = mathUtils.convertPoint(
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this.container,
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eventUtils.getClientX(evt),
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eventUtils.getClientY(evt)
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);
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const state = this.getView().getState(cell);
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if (state != null) {
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point.x -= state.x;
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point.y -= state.y;
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// Returns second if mouse in second half of cell
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if (point.y > state.height / 2) {
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return 'second';
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}
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}
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}
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return 'first';
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}
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labelChanged(cell, newValue, trigger) {
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// Sets the new value for the given cell and trigger
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const name = trigger != null ? trigger.fieldname : null;
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if (name != null) {
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// Clones the user object for correct undo and puts
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// the new value in the correct field.
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const value = cloneUtils.clone(cell.value);
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value[name] = newValue;
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newValue = value;
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super.labelChanged(cell, newValue, trigger);
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}
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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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graph.setHtmlLabels(true);
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// Adds handling of return and escape keystrokes for editing
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const keyHandler = new KeyHandler(graph);
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// Sample user objects with 2 fields
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const value = {};
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value.first = 'First value';
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value.second = 'Second value';
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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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value,
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position: [100, 60],
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size: [120, 80],
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style: 'overflow=fill;',
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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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