Class: RangeAdaptor

• Inheritance
• Description
• Class protocol
  • instance creation
• Instance protocol
  • accessing
  • actions
  • change & update
  • dependents access
  • initialization
  • private
• Examples

Inheritance:

   Object
   |
   +--Model
      |
      +--ValueModel
         |
         +--ValueHolder
            |
            +--RangeAdaptor

Package:

stx:libview2

Category:

Interface-Support-Models

Version:

rev: 1.3 date: 2000/02/05 14:21:30

user: cg

file: RangeAdaptor.st directory: libview2

module: stx stc-classLibrary: libview2

Description:

Range Adaptor is a kind of UpdateAdaptor that can be used to turn an 
arbitrary number (either an Integer or a Float) into a Float normalized between
0 and 1.

Class protocol:

 on: aSubject start: aStart stop: aStop grid: aGrid

 on: aSubject stop: aStop

 on: aSubject stop: aStop grid: aGrid

Instance protocol:

 grid

return the value of the instance variable 'grid' (automatically generated)

 grid: something

set the value of the instance variable 'grid' (automatically generated)

 rangeStart

return the value of the instance variable 'rangeStart' (automatically generated)

 rangeStart: something

set the value of the instance variable 'rangeStart' (automatically generated)

 rangeStop

return the value of the instance variable 'rangeStop' (automatically generated)

 rangeStop: something

set the value of the instance variable 'rangeStop' (automatically generated)

 setValue: aNumber

physically set my value, without change notifications

 subject

 subject: aValue

 value

return my value

 value: aNumber

physically set my value, without change notifications

 decrement

deccrement my value by grid

 increment

increment my value by grid

 update: something with: aParameter from: changedObject

translate an update from the model into a #value-change
via my depenedents ...

 addDependent: anObject

make the argument, anObject be a dependent of the receiver

 release

remove all dependencies from the receiver

 removeDependent: anObject

make the argument, anObject be independent of the receiver

 initialize

 setSubjectsValue: aNewValue

Examples:

|m r|

m := 0 asValue.
r := RangeAdaptor on:m start:0 stop:100 grid:1.
m inspect.
r inspect.