Define composite controls

After using the model to write a SWT interface, if the interface is reusable, it can be defined as a composite control.

The main methods of defining composite models are as follows.

First use the model to write the prototype of the composite control.
Create a model, implement the create() method, create a Java object through the prototype in the create() method, and make some settings based on the current model.
Compound control models usually need to inherit the LayoutDatas model.
Register the control model under the control master index so that it can be used when writing the SWT model.

The following 40-second GIF video demonstrates how to define composite controls.

The Groovy code for the create() method in the above example is as follows.

import xworker.swt.util.ThingCompositeCreator;

//Usually use ThingCompositeCreator to help create objects
def cc = new ThingCompositeCreator(self, actionContext);

//Set prototype
def prototype = world.getThing("xworker.example.util.barcode.ZXingSwtExample/@mainComposite");
cc.setCompositeThing(prototype);

//Create
def composite = cc.create();

//To avoid polluting variables in the current context, it is common to use a separate context
def ac = cc.getNewActionContext();

//Save variable. The saved variable is usually used for interaction later.
actionContext.g().put(self.getMetadata().getName(), ac.get("messageText"));

return composite;