46 lines
944 B
JavaScript
46 lines
944 B
JavaScript
'use strict';
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var LabelUtil = require('../LabelUtil');
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/**
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* A handler that updates the text of a BPMN element.
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*/
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function UpdateLabelHandler() {
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/**
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* Set the label and return the changed elements.
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*
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* Element parameter can be label itself or connection (i.e. sequence flow).
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*
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* @param {djs.model.Base} element
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* @param {String} text
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*/
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function setText(element, text) {
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// external label if present
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var label = element.label || element;
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var labelTarget = element.labelTarget || element;
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LabelUtil.setLabel(label, text, labelTarget !== label);
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return [ label, labelTarget ];
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}
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function execute(ctx) {
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ctx.oldLabel = LabelUtil.getLabel(ctx.element);
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return setText(ctx.element, ctx.newLabel);
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}
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function revert(ctx) {
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return setText(ctx.element, ctx.oldLabel);
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}
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// API
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this.execute = execute;
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this.revert = revert;
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}
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module.exports = UpdateLabelHandler; |