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JFace Data Binding/Tutorial
< JFace Data Binding
Revision as of 20:06, 12 October 2007 by Unnamed Poltroon (Talk) (New page: == Data Binding Tutorial == === Terms === * Model: a Model represents the Domain Model of your Application. * Target: a Target represents the GUI side. === A first simple binding === <p>L...)
Data Binding Tutorial
Terms
- Model: a Model represents the Domain Model of your Application.
- Target: a Target represents the GUI side.
A first simple binding
Looking at the example snippets, you'll see a few SWT examples. This time, we'll create a very simple RCP view. Our createPartControl method has just one Text Element:
public void createPartControl(Composite parent){ name = new Text(testGroup, SWT.BORDER); final GridData gd_name = new GridData(SWT.FILL, SWT.CENTER, true, false); name.setLayoutData(gd_name); }
That Text name represents the Target of our binding. Let's add a simple Model:
static class Person { // A property... String name = "HelloWorld"; public String getName() { return name; } public void setName(String name) { this.name = name; } }
To create your first binding, you need to instantiate a DataBindingContext. Create a method like this:
private DataBindingContext initDataBindings() { DataBindingContext bindingContext = new DataBindingContext(); return bindingContext; }
Next, we add a IObservableValue Object for the Target:
private DataBindingContext initDataBindings() { DataBindingContext bindingContext = new DataBindingContext(); IObservableValue nameTextObserveWidget = SWTObservables.observeText(name, SWT.FocusOut); return bindingContext; }
The observeText method takes two params
- name: the watched Control
- event: when the model will be updated. Choices are