// Display text entered by the user in a paragraph element on the canvas.
private void displayInputString(ref Binding binding)
{
// 1. Retrieve a Utml canvas element via its tag:
UtmlElement outputElement = getElementByTag("outputParagraph");
// 2. Replace text contents on the UI element by the content supplied by the binding:
outputElement.setLabel(binding.eventString);
// 3. Set binding response code to OK, so the calling element may react accordingly:
binding.responseCode = BindingResponse.OK;
// NOTE: The response code is a direct feedback signal used by the binding system.
// It is the major reason why 'binding' is passed by reference rather than by value, despite
// it being a struct. The response code is reset to 'None' by the caller after processing it.
}
public UtmlElement getElementByTag(string inTag)
{
if (string.IsNullOrEmpty(inTag))
{
Debug.LogError("[UtmlCanvas] Error! Unable to get UI element using null or empty tag!");
return(null);
}
if (elements == null || elements.Count == 0)
{
Debug.LogError("[UtmlCanvas] Error! No elements were registered in canvas, cannot retrieve by tag!");
return(null);
}
// Try to find the element by its tag, then return result:
UtmlElement element = null;
elements.TryGetValue(inTag, out element);
if (element == null)
{
Debug.LogError("[UtmlCanvas] Error! No element with tag '" + inTag + "' could be found!");
}
return(element);
}