145 lines
3.5 KiB
JavaScript
145 lines
3.5 KiB
JavaScript
import inherits from 'inherits';
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import CommandInterceptor from 'diagram-js/lib/command/CommandInterceptor';
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import {
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getBusinessObject,
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is
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} from '../../../util/ModelUtil';
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import {
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computeChildrenBBox
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} from 'diagram-js/lib/features/resize/ResizeUtil';
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var LOW_PRIORITY = 500;
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export default function ToggleElementCollapseBehaviour(
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eventBus, elementFactory, modeling,
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resize) {
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CommandInterceptor.call(this, eventBus);
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function hideEmptyLables(children) {
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if (children.length) {
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children.forEach(function(child) {
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if (child.type === 'label' && !child.businessObject.name) {
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child.hidden = true;
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}
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});
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}
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}
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function expandedBounds(shape, defaultSize) {
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var children = shape.children,
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newBounds = defaultSize,
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visibleElements,
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visibleBBox;
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visibleElements = filterVisible(children).concat([ shape ]);
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visibleBBox = computeChildrenBBox(visibleElements);
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if (visibleBBox) {
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// center to visibleBBox with max(defaultSize, childrenBounds)
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newBounds.width = Math.max(visibleBBox.width, newBounds.width);
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newBounds.height = Math.max(visibleBBox.height, newBounds.height);
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newBounds.x = visibleBBox.x + (visibleBBox.width - newBounds.width) / 2;
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newBounds.y = visibleBBox.y + (visibleBBox.height - newBounds.height) / 2;
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} else {
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// center to collapsed shape with defaultSize
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newBounds.x = shape.x + (shape.width - newBounds.width) / 2;
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newBounds.y = shape.y + (shape.height - newBounds.height) / 2;
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}
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return newBounds;
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}
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function collapsedBounds(shape, defaultSize) {
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return {
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x: shape.x + (shape.width - defaultSize.width) / 2,
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y: shape.y + (shape.height - defaultSize.height) / 2,
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width: defaultSize.width,
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height: defaultSize.height
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};
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}
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this.executed([ 'shape.toggleCollapse' ], LOW_PRIORITY, function(e) {
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var context = e.context,
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shape = context.shape;
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if (!is(shape, 'bpmn:SubProcess')) {
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return;
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}
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if (!shape.collapsed) {
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// all children got made visible through djs, hide empty labels
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hideEmptyLables(shape.children);
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// remove collapsed marker
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getBusinessObject(shape).di.isExpanded = true;
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} else {
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// place collapsed marker
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getBusinessObject(shape).di.isExpanded = false;
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}
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});
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this.reverted([ 'shape.toggleCollapse' ], LOW_PRIORITY, function(e) {
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var context = e.context;
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var shape = context.shape;
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// revert removing/placing collapsed marker
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if (!shape.collapsed) {
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getBusinessObject(shape).di.isExpanded = true;
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} else {
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getBusinessObject(shape).di.isExpanded = false;
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}
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});
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this.postExecuted([ 'shape.toggleCollapse' ], LOW_PRIORITY, function(e) {
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var shape = e.context.shape,
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defaultSize = elementFactory._getDefaultSize(shape),
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newBounds;
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if (shape.collapsed) {
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// resize to default size of collapsed shapes
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newBounds = collapsedBounds(shape, defaultSize);
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} else {
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// resize to bounds of max(visible children, defaultSize)
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newBounds = expandedBounds(shape, defaultSize);
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}
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modeling.resizeShape(shape, newBounds, null, {
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autoResize: shape.collapsed ? false : 'nwse'
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});
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});
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}
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inherits(ToggleElementCollapseBehaviour, CommandInterceptor);
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ToggleElementCollapseBehaviour.$inject = [
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'eventBus',
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'elementFactory',
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'modeling'
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];
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// helpers //////////////////////
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function filterVisible(elements) {
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return elements.filter(function(e) {
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return !e.hidden;
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});
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} |