Allow "injection" directly into certain widgets

[denley]

This could be done in a few ways:

By inferring the type from the widget type (only one "injection" type per widget type):

@BindPref("username")
TextView loggedInUser;

Or maybe by using different annotations for each type:

@BindBackgroundColorPreference("background_color")
View rootView;

Or maybe by manually specifying the type:

@BindPref(value = "background_color", bindTo = BACKGROUND_COLOR)
View rootView;

[denley]

Possible binding types:

enum value	binding method	%2 type
ASSIGN (default)	%1 = %2	-
ACTIVATED	%1.setActivated(%2)	View
ENABLED	%1.setEnabled(%2)	View
SELECTED	%1.setSelected(%2)	View
VISIBILITY	%1.setVisibility(%2 ? View.VISIBLE : View.GONE)	View
CHECKED	%1.setChecked(%2)	Checkable/CompoundButton
TEXT	%1.setText(%2)	TextView
PROGRESS	%1.setProgress(%2)	ProgressBar
MAX_PROGRESS	%1.setMax(%2)	ProgressBar