all files / bpmn-js/lib/features/modeling/cmd/ UpdatePropertiesHandler.js

98.72% Statements 77/78
92.86% Branches 26/28
100% Functions 15/15
98.72% Lines 77/78
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234                                                          1189× 1189× 1189× 1189× 1189×                                               338× 338× 338×   338×       338× 338×   338× 338× 338×   338× 145×   145×   145×       338×   37× 25×     37× 16×         338×     338× 338×     338×       317× 317×   317×   317× 241×         76×   76×                     66× 66× 66× 66× 66× 66×     66×   66× 20×   20×   20×     66×         404×         317×   317×     319× 252×   67×     319×           67× 91×   91×           404×   407× 304×     103× 103×               103× 145×                                 338×   338× 338× 37×       338×  
import {
  reduce,
  keys,
  forEach,
  assign
} from 'min-dash';
 
import {
  getBusinessObject
} from '../../../util/ModelUtil';
 
var DEFAULT_FLOW = 'default',
    ID = 'id',
    DI = 'di';
 
var NULL_DIMENSIONS = {
  width: 0,
  height: 0
};
 
/**
 * A handler that implements a BPMN 2.0 property update.
 *
 * This should be used to set simple properties on elements with
 * an underlying BPMN business object.
 *
 * Use respective diagram-js provided handlers if you would
 * like to perform automated modeling.
 */
export default function UpdatePropertiesHandler(
    elementRegistry, moddle, translate,
    modeling, textRenderer) {
 
  this._elementRegistry = elementRegistry;
  this._moddle = moddle;
  this._translate = translate;
  this._modeling = modeling;
  this._textRenderer = textRenderer;
}
 
UpdatePropertiesHandler.$inject = [
  'elementRegistry',
  'moddle',
  'translate',
  'modeling',
  'textRenderer'
];
 
 
// api //////////////////////
 
/**
 * Updates a BPMN element with a list of new properties
 *
 * @param {Object} context
 * @param {djs.model.Base} context.element the element to update
 * @param {Object} context.properties a list of properties to set on the element's
 *                                    businessObject (the BPMN model element)
 *
 * @return {Array<djs.model.Base>} the updated element
 */
UpdatePropertiesHandler.prototype.execute = function(context) {
 
  var element = context.element,
      changed = [ element ],
      translate = this._translate;
 
  Iif (!element) {
    throw new Error(translate('element required'));
  }
 
  var elementRegistry = this._elementRegistry,
      ids = this._moddle.ids;
 
  var businessObject = element.businessObject,
      properties = unwrapBusinessObjects(context.properties),
      oldProperties = context.oldProperties || getProperties(businessObject, properties);
 
  if (isIdChange(properties, businessObject)) {
    ids.unclaim(businessObject[ID]);
 
    elementRegistry.updateId(element, properties[ID]);
 
    ids.claim(properties[ID], businessObject);
  }
 
  // correctly indicate visual changes on default flow updates
  if (DEFAULT_FLOW in properties) {
 
    if (properties[DEFAULT_FLOW]) {
      changed.push(elementRegistry.get(properties[DEFAULT_FLOW].id));
    }
 
    if (businessObject[DEFAULT_FLOW]) {
      changed.push(elementRegistry.get(businessObject[DEFAULT_FLOW].id));
    }
  }
 
  // update properties
  setProperties(businessObject, properties);
 
  // store old values
  context.oldProperties = oldProperties;
  context.changed = changed;
 
  // indicate changed on objects affected by the update
  return changed;
};
 
 
UpdatePropertiesHandler.prototype.postExecute = function(context) {
  var element = context.element,
      label = element.label;
 
  var text = label && getBusinessObject(label).name;
 
  if (!text) {
    return;
  }
 
  // get layouted text bounds and resize external
  // external label accordingly
  var newLabelBounds = this._textRenderer.getExternalLabelBounds(label, text);
 
  this._modeling.resizeShape(label, newLabelBounds, NULL_DIMENSIONS);
};
 
/**
 * Reverts the update on a BPMN elements properties.
 *
 * @param  {Object} context
 *
 * @return {djs.model.Base} the updated element
 */
UpdatePropertiesHandler.prototype.revert = function(context) {
 
  var element = context.element,
      properties = context.properties,
      oldProperties = context.oldProperties,
      businessObject = element.businessObject,
      elementRegistry = this._elementRegistry,
      ids = this._moddle.ids;
 
  // update properties
  setProperties(businessObject, oldProperties);
 
  if (isIdChange(properties, businessObject)) {
    ids.unclaim(properties[ID]);
 
    elementRegistry.updateId(element, oldProperties[ID]);
 
    ids.claim(oldProperties[ID], businessObject);
  }
 
  return context.changed;
};
 
 
function isIdChange(properties, businessObject) {
  return ID in properties && properties[ID] !== businessObject[ID];
}
 
 
function getProperties(businessObject, properties) {
  var propertyNames = keys(properties);
 
  return reduce(propertyNames, function(result, key) {
 
    // handle DI seperately
    if (key !== DI) {
      result[key] = businessObject.get(key);
    } else {
      result[key] = getDiProperties(businessObject.di, keys(properties.di));
    }
 
    return result;
  }, {});
}
 
 
function getDiProperties(di, propertyNames) {
  return reduce(propertyNames, function(result, key) {
    result[key] = di.get(key);
 
    return result;
  }, {});
}
 
 
function setProperties(businessObject, properties) {
  forEach(properties, function(value, key) {
 
    if (key !== DI) {
      businessObject.set(key, value);
    } else {
      // only update, if businessObject.di exists
      Eif (businessObject.di) {
        setDiProperties(businessObject.di, value);
      }
    }
  });
}
 
 
function setDiProperties(di, properties) {
  forEach(properties, function(value, key) {
    di.set(key, value);
  });
}
 
 
var referencePropertyNames = [ 'default' ];
 
/**
 * Make sure we unwrap the actual business object
 * behind diagram element that may have been
 * passed as arguments.
 *
 * @param  {Object} properties
 *
 * @return {Object} unwrappedProps
 */
function unwrapBusinessObjects(properties) {
 
  var unwrappedProps = assign({}, properties);
 
  referencePropertyNames.forEach(function(name) {
    if (name in properties) {
      unwrappedProps[name] = getBusinessObject(unwrappedProps[name]);
    }
  });
 
  return unwrappedProps;
}