Subclassing MorphicProject, TheWorldMenu and PasteUpMorph


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Last updated at 11:28 am UTC on 28 April 2019

A Morphic world can be customized by subclassing these closely related classes

MorphicProject
PasteUpMorph
TheWorldMenu to customize world menu
TheWorldMainDockingBar to customize main menu

Example

Suppose you wish to create a new project type called Meta by extending Morphic.

MorphicProject subclass: #MetaProject
	instanceVariableNames: ''
	classVariableNames: ''
	poolDictionaries: ''
	category: 'Meta-Project'

PasteUpMorph subclass: #MetaPasteUpMorph
	instanceVariableNames: ''
	classVariableNames: ''
	poolDictionaries: ''
	category: 'Meta-Morphic'

TheWorldMenu subclass: #MetaWorldMenu
	instanceVariableNames: ''
	classVariableNames: ''
	poolDictionaries: ''
	category: 'Meta-WorldMenu'

TheWorldMainDockingBar subclass: MetaWorldMainDockingBar
	instanceVariableNames: ''
	classVariableNames: ''
	poolDictionaries: ''
	category: 'Meta-WorldMenu'

In these new classes, you might want to customize the following methods:

MetaProject
- initialize
  - Remember to use MetaPasteUpMorph instead of PasteUpMorph
- initializeProjectPreferences
- configureOnFirstEntry
- finalEnterActions::
- finalExitActions:
MetaPasteUpMorph
- buildWorldMenu: evt
  - Remember to refer to MetaWorldMenu, if customized
- dockingBar
  - Remember to use MetaWorldMainDockingBar, if customized
MetaWorldMenu
- buildWorldMenu
TheWorldMainDockingBar

For instance in MetaPasteUpMorph:

buildWorldMenu: evt
	^(MetaWorldMenu new
		world: self
		project: (self project ifNil: [Project current])       
		hand: evt hand) buildWorldMenu

or the method

dockingBar

in MetaPasteUpMorph:

dockingBar
	^self
		projectParameterAt: #dockingBar
		ifAbsent: [MetaWorldMainDockingBar instance]

Example

See also