122 lines
3.3 KiB
JavaScript
122 lines
3.3 KiB
JavaScript
/*
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Copyright 2021-present The maxGraph project Contributors
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Copyright (c) 2006-2020, JGraph Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import {
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Graph,
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CellOverlay,
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InternalEvent,
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CellTracker,
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utils,
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ImageBox,
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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: 'Effects/Overlays',
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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 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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// Creates the graph inside the given container
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const graph = new Graph(container);
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// Disables basic selection and cell handling
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graph.setEnabled(false);
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// Highlights the vertices when the mouse enters
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const highlight = new CellTracker(graph, '#00FF00');
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// Enables tooltips for the overlays
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graph.setTooltips(true);
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// Installs a handler for click events in the graph
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// that toggles the overlay for the respective cell
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graph.addListener(InternalEvent.CLICK, (sender, evt) => {
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const cell = evt.getProperty('cell');
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if (cell != null) {
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const overlays = graph.getCellOverlays(cell);
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if (overlays.length == 0) {
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// Creates a new overlay with an image and a tooltip
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const overlay = new CellOverlay(
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new ImageBox('/images/check.png', 16, 16),
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'Overlay tooltip'
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);
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// Installs a handler for clicks on the overlay
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overlay.addListener(InternalEvent.CLICK, (sender, evt2) => {
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utils.alert('Overlay clicked');
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});
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// Sets the overlay for the cell in the graph
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graph.addCellOverlay(cell, overlay);
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} else {
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graph.removeCellOverlays(cell);
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}
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}
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});
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// Installs a handler for double click events in the graph
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// that shows an alert box
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graph.addListener(InternalEvent.DOUBLE_CLICK, (sender, evt) => {
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const cell = evt.getProperty('cell');
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alert(`Doubleclick: ${cell != null ? 'Cell' : 'Graph'}`);
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evt.consume();
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});
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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: 'Click,',
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position: [20, 20],
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size: [60, 40],
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});
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const v2 = graph.insertVertex({
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parent,
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value: 'Doubleclick',
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position: [200, 150],
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size: [100, 40],
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});
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const e1 = graph.insertEdge({
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parent,
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source: v1,
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target: v2,
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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({});
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