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

320 lines
7.7 KiB
JavaScript

'use strict';
var assign = require('lodash/object/assign');
var UpdateLabelHandler = require('./cmd/UpdateLabelHandler');
var LabelUtil = require('./LabelUtil');
var is = require('../../util/ModelUtil').is,
isAny = require('../modeling/util/ModelingUtil').isAny,
isExpanded = require('../../util/DiUtil').isExpanded;
var SMALL_FONT_SIZE = 11,
SMALL_LINE_HEIGHT = 13,
MEDIUM_FONT_SIZE = 12,
MEDIUM_LINE_HEIGHT = 14;
function LabelEditingProvider(eventBus, canvas, directEditing, commandStack, resizeHandles) {
this._canvas = canvas;
this._commandStack = commandStack;
directEditing.registerProvider(this);
commandStack.registerHandler('element.updateLabel', UpdateLabelHandler);
// listen to dblclick on non-root elements
eventBus.on('element.dblclick', function(event) {
activateDirectEdit(event.element, true);
});
// complete on followup canvas operation
eventBus.on([ 'element.mousedown', 'drag.init', 'canvas.viewbox.changing' ], function(event) {
directEditing.complete();
});
// cancel on command stack changes
eventBus.on([ 'commandStack.changed' ], function(e) {
directEditing.cancel();
});
eventBus.on('directEditing.activate', function(event) {
resizeHandles.removeResizers();
});
eventBus.on('create.end', 500, function(event) {
var element = event.shape,
canExecute = event.context.canExecute,
isTouch = event.isTouch;
// TODO(nikku): we need to find a way to support the direct editing
// on mobile devices; right now this will break for desworkflowediting on mobile devices
// as it breaks the user interaction workflow
// TODO(nre): we should temporarily focus the edited element here
// and release the focused viewport after the direct edit operation is finished
if (isTouch) {
return;
}
if (!canExecute) {
return;
}
activateDirectEdit(element);
});
function activateDirectEdit(element, force) {
if (force ||
isAny(element, [ 'bpmn:Task', 'bpmn:TextAnnotation' ]) ||
isCollapsedSubProcess(element)) {
directEditing.activate(element);
}
}
}
LabelEditingProvider.$inject = [ 'eventBus', 'canvas', 'directEditing', 'commandStack', 'resizeHandles' ];
module.exports = LabelEditingProvider;
/**
* Activate direct editing for activities and text annotations.
*
* @param {djs.model.Base} element
*
* @return {Object} an object with properties bounds (position and size), text and options
*/
LabelEditingProvider.prototype.activate = function(element) {
// text
var text = LabelUtil.getLabel(element);
if (text === undefined) {
return;
}
var context = {
text: text
};
// bounds
var bounds = this.getEditingBBox(element);
assign(context, bounds);
// options
var target = element.label || element;
var options = {};
// tasks
if (isAny(element, [ 'bpmn:Task', 'bpmn:Participant', 'bpmn:Lane', 'bpmn:CallActivity' ]) ||
isCollapsedSubProcess(element)) {
assign(options, {
centerVertically: true
});
}
// external labels
if (target.labelTarget) {
assign(options, {
autoResize: true
});
}
// text annotations
if (is(element, 'bpmn:TextAnnotation')) {
assign(options, {
resizable: true,
autoResize: true
});
}
assign(context, {
options: options
});
return context;
};
/**
* Get the editing bounding box based on the element's size and position
*
* @param {djs.model.Base} element
*
* @return {Object} an object containing information about position and size (fixed or minimum and/or maximum)
*/
LabelEditingProvider.prototype.getEditingBBox = function(element) {
var canvas = this._canvas;
var target = element.label || element;
var bbox = canvas.getAbsoluteBBox(target);
var mid = {
x: bbox.x + bbox.width / 2,
y: bbox.y + bbox.height / 2
};
// default position
var bounds = { x: bbox.x, y: bbox.y };
var zoom = canvas.zoom();
// take zoom into account
var smallFontSize = SMALL_FONT_SIZE * zoom,
smallLineHeight = SMALL_LINE_HEIGHT * zoom,
mediumFontSize = MEDIUM_FONT_SIZE * zoom,
mediumLineHeight = MEDIUM_LINE_HEIGHT * zoom;
var style = {};
// adjust for expanded pools AND lanes
if (is(element, 'bpmn:Lane') || isExpandedPool(element)) {
assign(bounds, {
width: bbox.height,
height: 30 * zoom,
x: bbox.x - bbox.height / 2 + (15 * zoom),
y: mid.y - (30 * zoom) / 2
});
assign(style, {
fontSize: mediumFontSize + 'px',
lineHeight: mediumLineHeight + 'px',
paddingTop: (7 * zoom) + 'px',
paddingBottom: (7 * zoom) + 'px',
paddingLeft: (5 * zoom) + 'px',
paddingRight: (5 * zoom) + 'px',
transform: 'rotate(-90deg)'
});
}
// internal labels for tasks and collapsed call activities, sub processes and participants
if (isAny(element, [ 'bpmn:Task', 'bpmn:CallActivity']) ||
isCollapsedPool(element) ||
isCollapsedSubProcess(element)) {
assign(bounds, {
width: bbox.width,
height: bbox.height
});
assign(style, {
fontSize: mediumFontSize + 'px',
lineHeight: mediumLineHeight + 'px',
paddingTop: (7 * zoom) + 'px',
paddingBottom: (7 * zoom) + 'px',
paddingLeft: (5 * zoom) + 'px',
paddingRight: (5 * zoom) + 'px'
});
}
// internal labels for expanded sub processes
if (isExpandedSubProcess(element)) {
assign(bounds, {
width: bbox.width,
x: bbox.x
});
assign(style, {
fontSize: mediumFontSize + 'px',
lineHeight: mediumLineHeight + 'px',
paddingTop: (7 * zoom) + 'px',
paddingBottom: (7 * zoom) + 'px',
paddingLeft: (5 * zoom) + 'px',
paddingRight: (5 * zoom) + 'px'
});
}
// external labels for events, data elements, gateways and connections
if (target.labelTarget) {
var width = 90 * zoom,
paddingTop = 7 * zoom,
paddingBottom = 4 * zoom;
assign(bounds, {
width: width,
height: bbox.height + paddingTop + paddingBottom,
x: mid.x - width / 2,
y: bbox.y - paddingTop
});
assign(style, {
fontSize: smallFontSize + 'px',
lineHeight: smallLineHeight + 'px',
paddingTop: paddingTop + 'px',
paddingBottom: paddingBottom + 'px'
});
}
// text annotations
if (is(element, 'bpmn:TextAnnotation')) {
assign(bounds, {
width: bbox.width,
height: bbox.height,
minWidth: 30 * zoom,
minHeight: 10 * zoom
});
assign(style, {
textAlign: 'left',
paddingTop: (7 * zoom) + 'px',
paddingBottom: (7 * zoom) + 'px',
paddingLeft: (5 * zoom) + 'px',
paddingRight: (5 * zoom) + 'px',
fontSize: mediumFontSize + 'px',
lineHeight: mediumLineHeight + 'px'
});
}
return { bounds: bounds, style: style };
};
LabelEditingProvider.prototype.update = function(element, newLabel, activeContextText, bounds) {
var absoluteElementBBox = this._canvas.getAbsoluteBBox(element);
this._commandStack.execute('element.updateLabel', {
element: element,
newLabel: newLabel,
bounds: {
x: element.x,
y: element.y,
width: element.width / absoluteElementBBox.width * bounds.width,
height: element.height / absoluteElementBBox.height * bounds.height
}
});
};
////////// helpers ////////////////////////////////
function isCollapsedSubProcess(element) {
return is(element, 'bpmn:SubProcess') && !isExpanded(element);
}
function isExpandedSubProcess(element) {
return is(element, 'bpmn:SubProcess') && isExpanded(element);
}
function isCollapsedPool(element) {
return is(element, 'bpmn:Participant') && !isExpanded(element);
}
function isExpandedPool(element) {
return is(element, 'bpmn:Participant') && isExpanded(element);
}