bpmn-js/lib/features/modeling/behavior/ResizeLaneBehavior.js

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'use strict';
var is = require('../../../util/ModelUtil').is;
var roundBounds = require('diagram-js/lib/layout/LayoutUtil').roundBounds;
var hasPrimaryModifier = require('diagram-js/lib/util/Mouse').hasPrimaryModifier;
var SLIGHTLY_HIGHER_PRIORITY = 1001;
/**
* Invoke {@link Modeling#resizeLane} instead of
* {@link Modeling#resizeShape} when resizing a Lane
* or Participant shape.
*/
function ResizeLaneBehavior(eventBus, modeling) {
eventBus.on('resize.start', SLIGHTLY_HIGHER_PRIORITY + 500, function(event) {
var context = event.context,
shape = context.shape;
if (is(shape, 'bpmn:Lane') || is(shape, 'bpmn:Participant')) {
// should we resize the opposite lane(s) in
// order to compensate for the resize operation?
context.balanced = !hasPrimaryModifier(event);
}
});
/**
* Intercept resize end and call resize lane function instead.
*/
eventBus.on('resize.end', SLIGHTLY_HIGHER_PRIORITY, function(event) {
var context = event.context,
shape = context.shape,
canExecute = context.canExecute,
newBounds = context.newBounds;
if (is(shape, 'bpmn:Lane') || is(shape, 'bpmn:Participant')) {
if (canExecute) {
// ensure we have actual pixel values for new bounds
// (important when zoom level was > 1 during move)
newBounds = roundBounds(newBounds);
// perform the actual resize
modeling.resizeLane(shape, newBounds, context.balanced);
}
// stop propagation
return false;
}
});
}
ResizeLaneBehavior.$inject = [ 'eventBus', 'modeling' ];
module.exports = ResizeLaneBehavior;