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ReplaceElementBehaviour.js
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ReplaceElementBehaviour.js
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import inherits from 'inherits-browser';
import { forEach, reduce } from 'min-dash';
import CommandInterceptor from 'diagram-js/lib/command/CommandInterceptor';
import { isEventSubProcess } from '../../../util/DiUtil';
/**
* @typedef {import('../../replace/BpmnReplace').default} BpmnReplace
* @typedef {import('../../rules/BpmnRules').default} BpmnRules
* @typedef {import('diagram-js/lib/core/ElementRegistry').default} ElementRegistry
* @typedef {import('didi').Injector} Injector
* @typedef {import('../Modeling').default} Modeling
* @typedef {import('diagram-js/lib/features/selection/Selection').default} Selection
*/
/**
* BPMN-specific replace behavior.
*
* @param {BpmnReplace} bpmnReplace
* @param {BpmnRules} bpmnRules
* @param {ElementRegistry} elementRegistry
* @param {Injector} injector
* @param {Modeling} modeling
* @param {Selection} selection
*/
export default function ReplaceElementBehaviour(
bpmnReplace,
bpmnRules,
elementRegistry,
injector,
modeling,
selection
) {
injector.invoke(CommandInterceptor, this);
this._bpmnReplace = bpmnReplace;
this._elementRegistry = elementRegistry;
this._selection = selection;
// replace elements on create, e.g. during copy-paste
this.postExecuted([ 'elements.create' ], 500, function(event) {
var context = event.context,
target = context.parent,
elements = context.elements;
var elementReplacements = reduce(elements, function(replacements, element) {
var canReplace = bpmnRules.canReplace([ element ], element.host || element.parent || target);
return canReplace ? replacements.concat(canReplace.replacements) : replacements;
}, []);
if (elementReplacements.length) {
this._replaceElements(elements, elementReplacements);
}
}, this);
// replace elements on move
this.postExecuted([ 'elements.move' ], 500, function(event) {
var context = event.context,
target = context.newParent,
newHost = context.newHost,
elements = [];
forEach(context.closure.topLevel, function(topLevelElements) {
if (isEventSubProcess(topLevelElements)) {
elements = elements.concat(topLevelElements.children);
} else {
elements = elements.concat(topLevelElements);
}
});
// set target to host if attaching
if (elements.length === 1 && newHost) {
target = newHost;
}
var canReplace = bpmnRules.canReplace(elements, target);
if (canReplace) {
this._replaceElements(elements, canReplace.replacements, newHost);
}
}, this);
// update attachments on host replace
this.postExecute([ 'shape.replace' ], 1500, function(e) {
var context = e.context,
oldShape = context.oldShape,
newShape = context.newShape,
attachers = oldShape.attachers,
canReplace;
if (attachers && attachers.length) {
canReplace = bpmnRules.canReplace(attachers, newShape);
this._replaceElements(attachers, canReplace.replacements);
}
}, this);
// keep ID on shape replace
this.postExecuted([ 'shape.replace' ], 1500, function(e) {
var context = e.context,
oldShape = context.oldShape,
newShape = context.newShape;
modeling.unclaimId(oldShape.businessObject.id, oldShape.businessObject);
modeling.updateProperties(newShape, { id: oldShape.id });
});
}
inherits(ReplaceElementBehaviour, CommandInterceptor);
ReplaceElementBehaviour.prototype._replaceElements = function(elements, newElements) {
var elementRegistry = this._elementRegistry,
bpmnReplace = this._bpmnReplace,
selection = this._selection;
forEach(newElements, function(replacement) {
var newElement = {
type: replacement.newElementType
};
var oldElement = elementRegistry.get(replacement.oldElementId);
var idx = elements.indexOf(oldElement);
elements[idx] = bpmnReplace.replaceElement(oldElement, newElement, { select: false });
});
if (newElements) {
selection.select(elements);
}
};
ReplaceElementBehaviour.$inject = [
'bpmnReplace',
'bpmnRules',
'elementRegistry',
'injector',
'modeling',
'selection'
];