153 lines
3.7 KiB
JavaScript
153 lines
3.7 KiB
JavaScript
'use strict';
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var UpdateLabelHandler = require('./cmd/UpdateLabelHandler');
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var LabelUtil = require('./LabelUtil');
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var is = require('../../util/ModelUtil').is,
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isExpanded = require('../../util/DiUtil').isExpanded;
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var MIN_BOUNDS = {
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width: 150,
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height: 50
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};
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function LabelEditingProvider(eventBus, canvas, directEditing, commandStack) {
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directEditing.registerProvider(this);
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commandStack.registerHandler('element.updateLabel', UpdateLabelHandler);
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// listen to dblclick on non-root elements
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eventBus.on('element.dblclick', function(event) {
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directEditing.activate(event.element);
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});
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// complete on followup canvas operation
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eventBus.on([ 'element.mousedown', 'drag.init', 'canvas.viewbox.changed' ], function(event) {
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directEditing.complete();
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});
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// cancel on command stack changes
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eventBus.on([ 'commandStack.changed' ], function() {
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directEditing.cancel();
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});
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// activate direct editing for activities and text annotations
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if ('ontouchstart' in document.documentElement) {
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// we deactivate automatic label editing on mobile devices
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// as it breaks the user interaction workflow
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// TODO(nre): we should temporarily focus the edited element here
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// and release the focused viewport after the direct edit operation is finished
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} else {
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eventBus.on('create.end', 500, function(e) {
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var element = e.shape,
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canExecute = e.context.canExecute;
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if (!canExecute) {
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return;
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}
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if (is(element, 'bpmn:Task') || is(element, 'bpmn:TextAnnotation') ||
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(is(element, 'bpmn:SubProcess') && !isExpanded(element))) {
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directEditing.activate(element);
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}
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});
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}
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this._canvas = canvas;
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this._commandStack = commandStack;
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}
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LabelEditingProvider.$inject = [ 'eventBus', 'canvas', 'directEditing', 'commandStack' ];
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module.exports = LabelEditingProvider;
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LabelEditingProvider.prototype.activate = function(element) {
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var text = LabelUtil.getLabel(element);
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if (text === undefined) {
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return;
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}
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var bbox = this.getEditingBBox(element);
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// adjust for expanded pools AND lanes
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if ((is(element, 'bpmn:Participant') && isExpanded(element)) || is(element, 'bpmn:Lane')) {
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bbox.width = MIN_BOUNDS.width;
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bbox.height = MIN_BOUNDS.height;
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bbox.x = bbox.x + 10 - bbox.width / 2;
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bbox.y = bbox.mid.y - bbox.height / 2;
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}
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// ajust minumum size for task and activities
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if ((is(element, 'bpmn:Task') || is(element, 'bpmn:Activity') )) {
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if (bbox.width < 100) {
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bbox.width = 100;
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bbox.x = bbox.mid.x - bbox.width / 2;
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}
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if (bbox.height < 80) {
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bbox.height = 80;
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bbox.y = bbox.mid.y - bbox.height / 2;
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}
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}
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// adjust for expanded sub processes and collapsed pools
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if ((is(element, 'bpmn:SubProcess') && isExpanded(element)) ||
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(is(element, 'bpmn:Participant') && !isExpanded(element))) {
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bbox.width = element.width;
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bbox.height = MIN_BOUNDS.height;
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bbox.x = bbox.mid.x - element.width / 2;
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}
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return { bounds: bbox, text: text };
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};
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LabelEditingProvider.prototype.getEditingBBox = function(element, maxBounds) {
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var target = element.label || element;
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var bbox = this._canvas.getAbsoluteBBox(target);
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var mid = {
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x: bbox.x + bbox.width / 2,
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y: bbox.y + bbox.height / 2
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};
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// external label
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if (target.labelTarget) {
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bbox.width = Math.max(bbox.width, MIN_BOUNDS.width);
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bbox.height = Math.max(bbox.height, MIN_BOUNDS.height);
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bbox.x = mid.x - bbox.width / 2;
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}
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bbox.mid = mid;
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return bbox;
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};
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LabelEditingProvider.prototype.update = function(element, newLabel) {
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this._commandStack.execute('element.updateLabel', {
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element: element,
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newLabel: newLabel
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});
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};
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