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

138 lines
3.1 KiB
JavaScript

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
if (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';
}