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reference databinding
JankyUI Supports Two-Way DataBinding.
- Data is automatically read from your ViewModel when it needs to be displayed
- Data is automatically written to your ViewModel when it has changed
- Methods are automatically called when a Control is interacted with
The initial data context is the ViewModel passed when creating the JankyUI.
At any Control or Container XML Element you may change the data context to another one relative from its parent like so:
<Button data-context='InnerDataContext' text='@BoundProperty' on-click='@BoundMethod' />Note the data-context attribute doesn't receive the @ character
You may also delve multiple properties at once like so:
<Button data-context='InnerDataContext.WeNeedTo.GoDeeper' text='@BoundProperty' on-click='@BoundMethod' />When used in Container Nodes, all children will also share the new Data Context.
Binding targets must be public Properties or Fields, static or instance, and their value must also be public.
A private class behind a object member will not work
Binding targets names must adhere to the following format:
- One character from A to Z or a underscore (No digits, Case insensitive)
- Any number of characters from A to Z, 0 to 9, or a underscore (Case insensitive)
Identifier, _identifier, i_am_valid, _123, _abc123
123abc, with spaces, special$character
Bindings on the XML side are identified by the @ chacater before the Member name inside the XML Node attribute:
<Button text='@BoundProperty' on-click='@BoundMethod' />If your text has to start with @ and it is not a Binding, escape it with another @ character:
<Label text='@@I Am Not Bound' />