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Template selector not working
March 11, 2022, 12:04pm
#1
We’ve got element templates working for events, sequence flows and tasks in version 0.4 of the properties panel. Now, we’re updating to version 1.0-alpha and the templates are still valid, existing models are working properly with the existing templates.
But when adding a new element, we see the button + Select but nothing happens when that gets clicked.
Our app looks like this:
import BpmnModeler from ‘bpmn-js/lib/Modeler’; import BpmnPropertiesPanelModule, BpmnPropertiesProviderModule, CamundaPlatformPropertiesProviderModule, ElementTemplatesPropertiesProviderModule, from ‘bpmn-js-properties-panel’; import CamundaBpmnModdle from ‘camunda-bpmn-moddle/resources/camunda.json’
window.modeller = new BpmnModeler( container: ‘#bpmn-io .canvas’, propertiesPanel: parent: ‘#bpmn-io .property-panel’ , additionalModules: [ BpmnPropertiesPanelModule, BpmnPropertiesProviderModule, CamundaPlatformPropertiesProviderModule, ElementTemplatesPropertiesProviderModule, ], moddleExtensions: camunda: CamundaBpmnModdle , elementTemplates: [], );
And on runtime, we’re filling the element templates list. This is working just fine, just the selector for elements doesn’t show up.
Any idea what could be wrong?
It looks like nothing is listening to the event elementTemplates.select – is that intentional? I’ve checked the eventBus and there is really nothing there. Do we have to write our own selector? If so, I’d need some help. What I managed to do is
const eventBus = Drupal.bpmn_io.modeller.get(‘eventBus’); eventBus.on(‘elementTemplates.select’, function(event) const elementTemplates = Drupal.bpmn_io.modeller.get(‘elementTemplates’); alert(‘I got fired’); );
But how would I go about finding applicable templates and then apply the selected one to the element or property panel?
Or even better, if there were a generic solution for this that we only could import, that would be much appreciated.
maxtru
March 14, 2022, 8:08am
#4
Hi @jurgenhaas ,
cool you are updating to the latest propPanel version!
Indeed, with 1.0.0-alpha.0 we removed the element template select, so your observation is correct, nothing is listing on the elementTemplates.select event. See CHANGELOG.
We are already considering how to improve the situation (e.g., provide a default, or give a good example how to implement an easy solution). See issue.
For now, you would have to look into how the Camunda Modeler implements this feature as an example.
Thanks
Max
Thanks @maxtru for your feedback. I’ll see if I can get something up and running later this week. I had a quick look into the Camunda implementation but not sure yet if I can do something similar outside of Camunda – or how many dependencies would get into my way.
The issue you linked to contains a link to https://github.com/bpmn-io/connectors-modeling-demo but that responds with a 404, unfortunately. The topic sounds very promising though 
Good news: with help from @nikku over at Template selector doesn’t work · Issue #608 · bpmn-io/bpmn-js-properties-panel · GitHub we’ve got a working example of a template selector. I’m so excited – and thank you everybody for your help on this.
We have got element templates working for events, sequence flows and tasks in version 0.4 of the properties panel.
Now, we’re updating to version 1.0-alpha and the templates are still valid, existing models are working properly with the existing templates.