all files / bpmn-js/lib/features/label-editing/ LabelEditingPreview.js

100% Statements 40/40
96% Branches 24/25
100% Functions 5/5
100% Lines 40/40
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138                                            143×   143×       143× 90×   90×     90×                                             90×   53× 37×       28×       143×                                       143× 110×   110× 67× 67×     110× 110×   110×                                  
import {
  append as svgAppend,
  attr as svgAttr,
  create as svgCreate,
  remove as svgRemove
} from 'tiny-svg';
 
import {
  getBusinessObject,
  is
} from '../../util/ModelUtil';
 
import {
  translate
} from 'diagram-js/lib/util/SvgTransformUtil';
 
var MARKER_HIDDEN = 'djs-element-hidden',
    MARKER_LABEL_HIDDEN = 'djs-label-hidden';
 
 
export default function LabelEditingPreview(
    eventBus, canvas, elementRegistry,
    pathMap) {
 
  var self = this;
 
  var defaultLayer = canvas.getDefaultLayer();
 
  var element, absoluteElementBBox, gfx;
 
  eventBus.on('directEditing.activate', function(context) {
    var activeProvider = context.active;
 
    element = activeProvider.element.label || activeProvider.element;
 
    // text annotation
    if (is(element, 'bpmn:TextAnnotation')) {
      absoluteElementBBox = canvas.getAbsoluteBBox(element);
 
      gfx = svgCreate('g');
 
      var textPathData = pathMap.getScaledPath('TEXT_ANNOTATION', {
        xScaleFactor: 1,
        yScaleFactor: 1,
        containerWidth: element.width,
        containerHeight: element.height,
        position: {
          mx: 0.0,
          my: 0.0
        }
      });
 
      var path = self.path = svgCreate('path');
 
      svgAttr(path, {
        d: textPathData,
        strokeWidth: 2,
        stroke: getStrokeColor(element)
      });
 
      svgAppend(gfx, path);
 
      svgAppend(defaultLayer, gfx);
 
      translate(gfx, element.x, element.y);
    }
 
    if (is(element, 'bpmn:TextAnnotation') ||
        element.labelTarget) {
      canvas.addMarker(element, MARKER_HIDDEN);
    } else if (is(element, 'bpmn:Task') ||
               is(element, 'bpmn:CallActivity') ||
               is(element, 'bpmn:SubProcess') ||
               is(element, 'bpmn:Participant')) {
      canvas.addMarker(element, MARKER_LABEL_HIDDEN);
    }
  });
 
  eventBus.on('directEditing.resize', function(context) {
 
    // text annotation
    Eif (is(element, 'bpmn:TextAnnotation')) {
      var height = context.height,
          dy = context.dy;
 
      var newElementHeight = Math.max(element.height / absoluteElementBBox.height * (height + dy), 0);
 
      var textPathData = pathMap.getScaledPath('TEXT_ANNOTATION', {
        xScaleFactor: 1,
        yScaleFactor: 1,
        containerWidth: element.width,
        containerHeight: newElementHeight,
        position: {
          mx: 0.0,
          my: 0.0
        }
      });
 
      svgAttr(self.path, {
        d: textPathData
      });
    }
  });
 
  eventBus.on([ 'directEditing.complete', 'directEditing.cancel' ], function(context) {
    var activeProvider = context.active;
 
    if (activeProvider) {
      canvas.removeMarker(activeProvider.element.label || activeProvider.element, MARKER_HIDDEN);
      canvas.removeMarker(element, MARKER_LABEL_HIDDEN);
    }
 
    element = undefined;
    absoluteElementBBox = undefined;
 
    if (gfx) {
      svgRemove(gfx);
 
      gfx = undefined;
    }
  });
}
 
LabelEditingPreview.$inject = [
  'eventBus',
  'canvas',
  'elementRegistry',
  'pathMap'
];
 
 
// helpers ///////////////////
 
function getStrokeColor(element, defaultColor) {
  var bo = getBusinessObject(element);
 
  return bo.di.get('stroke') || defaultColor || 'black';
}