Add BPMN diagram refactoring actions

[nikku]

This issue serves as an epic for BPMN refactoring actions in the Camunda modeler.

Definition

A refactoring action allows users to perform rather complex, repeatitive actions in a quick manner.

Possible Actions

• Wrap in sub-process
• Remove sub-process, keeping contents
• Remove participant, keeping contents (Remove a pool without deleting the contents? #529, Preserve attributes on the Process element when deleting the Participant element bpmn-io/bpmn-js#968)

Overall Questions

How to make actions accessible to the user?

Via multi-element context pad? Via edit menu / keyboard shortcut only (think about CTRL+1 to do anything in Eclipse)?

[falko]

Bulk actions:

• Bulk Property Change (Bulk Property Change #893)
• Bulk Morph (Bulk Morph #892)

Sub-Process:

• Extract Subprocess / Call Activity and inverse operation
• Keep positions of Boundary Events and edge waypoints when resizing a Sub-Process (Keep positions of Boundary Events and edge waypoints when resizing a Sub-Process #655)
• Expanding a subprocess overlaps previous content (Creating/expanding a subprocess overlaps previous content #1244)
• When expanding a Sub-Process, auto-apply the Space Tool to create space
• Add subprocess with start event included (Add subprocess with start event included #1242)

Events:

• Morph among Start/Intermediate/End Events without losing event config, e.g. morphing a message start event directly into a message intermediate event while keeping event type and all it's attributes
• Attach/detach intermediate/boundary events (Make existing intermediate events attachable #239, Allow to change Intermediate Events to Boundary Events bpmn-io/bpmn-js#478)
• Detach boundary event when connecting host with event-based gateway (Detach boundary event when connecting host with event-based gateway #1053)
• Auto Morph to Event Sub-Process by changing Start Event Type (Auto Morph to Event Sub-Process by changing Start Event Type #915)
• Auto Morph None Events when connecting Message Flows BPMN (Connecting message flows to non-events #197, Auto Morph None Events when connecting Message Flows #914)
• Event Sub-Process Creation from Boundary Events

Labels:

• Entering 'Yes' or 'Ja' as a label on a sequence flow on a diverging XOR automatically adds 'No' resp. 'Nein' on the other sequence flow
• Automatically add a question mark to labels of exclusive and inclusive gateways

Space Tool:

• Participant/Pool local Space tool Provide Participant/Pool local Space tool #178
• Flow element local space tool Flow element local space tool #876

Others:

• Swap elements (Swap elements #837)
• Toggle/reverse Lanes
• Reordering of Lanes (Enable reordering of Lanes bpmn-io/bpmn-js#969)
• Keyboard shortcuts for morphing Task/Event/Gateway types, e.g. Ctrl+U for User Task

[MaxTru]

Another related refactoring requirement:

• Import subprocess into existing bpmn: Allow to import collapsed subprocesses through API (similar toimportXML) bpmn-io/bpmn-js#1641

[falko]

Another refactoring suggestion:

• Smart Morph between Start, Intermediate, and End Events without loosing Event Trigger and Properties