84 lines
2.3 KiB
JavaScript
84 lines
2.3 KiB
JavaScript
'use strict';
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var filter = require('min-dash').filter;
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var Elements = require('diagram-js/lib/util/Elements');
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var getLanesRoot = require('../util/LaneUtil').getLanesRoot,
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getChildLanes = require('../util/LaneUtil').getChildLanes,
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LANE_INDENTATION = require('../util/LaneUtil').LANE_INDENTATION;
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/**
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* A handler that allows us to add a new lane
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* above or below an existing one.
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*
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* @param {Modeling} modeling
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*/
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function AddLaneHandler(modeling, spaceTool) {
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this._modeling = modeling;
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this._spaceTool = spaceTool;
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}
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AddLaneHandler.$inject = [ 'modeling', 'spaceTool' ];
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module.exports = AddLaneHandler;
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AddLaneHandler.prototype.preExecute = function(context) {
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var spaceTool = this._spaceTool,
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modeling = this._modeling;
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var shape = context.shape,
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location = context.location;
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var lanesRoot = getLanesRoot(shape);
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var isRoot = lanesRoot === shape,
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laneParent = isRoot ? shape : shape.parent;
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var existingChildLanes = getChildLanes(laneParent);
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// (0) add a lane if we currently got none and are adding to root
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if (!existingChildLanes.length) {
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modeling.createShape({ type: 'bpmn:Lane' }, {
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x: shape.x + LANE_INDENTATION,
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y: shape.y,
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width: shape.width - LANE_INDENTATION,
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height: shape.height
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}, laneParent);
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}
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// (1) collect affected elements to create necessary space
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var allAffected = [];
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Elements.eachElement(lanesRoot, function(element) {
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allAffected.push(element);
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if (element === shape) {
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return [];
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}
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return filter(element.children, function(c) {
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return c !== shape;
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});
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});
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var offset = location === 'top' ? -120 : 120,
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lanePosition = location === 'top' ? shape.y : shape.y + shape.height,
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spacePos = lanePosition + (location === 'top' ? 10 : -10),
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direction = location === 'top' ? 'n' : 's';
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var adjustments = spaceTool.calculateAdjustments(allAffected, 'y', offset, spacePos);
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spaceTool.makeSpace(adjustments.movingShapes, adjustments.resizingShapes, { x: 0, y: offset }, direction);
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// (2) create new lane at open space
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context.newLane = modeling.createShape({ type: 'bpmn:Lane' }, {
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x: shape.x + (isRoot ? LANE_INDENTATION : 0),
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y: lanePosition - (location === 'top' ? 120 : 0),
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width: shape.width - (isRoot ? LANE_INDENTATION : 0),
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height: 120
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}, laneParent);
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};
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