@maxgraph/core
Version:
maxGraph is a fully client side JavaScript diagramming library that uses SVG and HTML for rendering.
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JavaScript
/*
Copyright 2021-present The maxGraph project Contributors
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 { htmlEntities } from '../../util/StringUtils.js';
import { translate } from '../../internal/i18n-utils.js';
// @ts-expect-error The properties of PartialGraph are defined elsewhere.
export const TooltipMixin = {
getTooltip(state, node, x, y) {
let tip = null;
// Checks if the mouse is over the folding icon
if (state.control &&
(node === state.control.node || node.parentNode === state.control.node)) {
tip = this.getCollapseExpandResource();
tip = htmlEntities(translate(tip) || tip, true).replace(/\\n/g, '<br>');
}
if (!tip && state.overlays) {
state.overlays.forEach((shape) => {
// LATER: Exit loop if tip is not null
if (!tip && (node === shape.node || node.parentNode === shape.node)) {
tip = shape.overlay ? (shape.overlay.toString() ?? null) : null;
}
});
}
if (!tip) {
const selectionCellsHandler = this.getPlugin('SelectionCellsHandler');
const handler = selectionCellsHandler?.getHandler(state.cell);
if (handler &&
'getTooltipForNode' in handler &&
typeof handler.getTooltipForNode === 'function') {
tip = handler.getTooltipForNode(node);
}
}
if (!tip) {
tip = this.getTooltipForCell(state.cell);
}
return tip;
},
getTooltipForCell(cell) {
let tip = null;
if (cell && 'getTooltip' in cell) {
// @ts-ignore getTooltip() must exists.
tip = cell.getTooltip();
}
else {
tip = this.convertValueToString(cell);
}
return tip;
},
setTooltips(enabled) {
const tooltipHandler = this.getPlugin('TooltipHandler');
tooltipHandler?.setEnabled(enabled);
},
};