Class: NavigationHistory (in Tools)

• Inheritance
• Description
• Class protocol
  • instance creation
• Instance protocol
  • accessing
  • backward list compatibility
  • initialization
  • menu & menu actions
  • navigation
  • queries

Inheritance:

   Object
   |
   +--Tools::NavigationHistory

Package:

stx:libtool

Category:

Interface-Browsers-New-History

Version:

rev: 1.20 date: 2017/03/29 11:05:31

user: stefan

file: Tools__NavigationHistory.st directory: libtool

module: stx stc-classLibrary: libtool

Description:

two variants:
    a forward-backward history, as in a browser:
        navigating backward moves a pointer in a list
    a global history
        navigating moves the navigated item to the front position

hack: configurable to behave either as a global history
      or as a local-tab navigation history.
Also implement backward compatible list-style access interface,
to support old browsers (I guess, this is temporary and the other 
users of the global history (debugger, old systembrowser etc. should
be changed)

Class protocol:

 new

(comment from inherited method)
return an instance of myself without indexed variables

Instance protocol:

 addFirst: anEntry

list protocol

 addLast: anEntry

list protocol

 currentItem

 currentItem: anObject

 goBackItems

isEmpty ifTrue:[items] ifFalse:[items copyFrom:2]

 goForwardItems

 maxItemsInHistory: aNumber

 collect: aBlock

backward compatible list protocol

 collect: aBlock thenSelect: filter

backward compatible list protocol

 detect: aBlock ifNone: exceptionalValue

backward compatible list protocol

 do: aBlock

backward compatible list protocol

 first

backward compatible list protocol

 isEmpty

backward compatible list protocol

 isEmptyOrNil

backward compatible list protocol

 notEmpty

backward compatible list protocol

 notEmptyOrNil

backward compatible list protocol

 removeAll

backward compatible list protocol

 removeIdentical: anEntry

backward compatible list protocol

 reverseDo: aBlock

backward compatible list protocol

 beGlobalHistory

 initialize

Invoked when a new instance is created.

usage example(s):

super initialize. -- commented since inherited method does nothing

 clearHistory

 goBackMenu

 goForwardMenu

 goBack

 goForward

 goTo: navigationHistoryItem

already in list

 canGoBack

 canGoForward