I want to put add an imageMorph on top of another imageMorph.
I can do this with the following method (note SymbolBlank is an imageMorph MyBoard>>addSymbol |im| im := SymbolBlank new. self addMorph: im. im topLeft: 2...@2. I want to enhance this so I can choose one of a collection of imageMorphs to add. I created a class, SymbolArray, that is a subclass of OrderedCollection with the following initialize method. Each of the items I'm adding (SymbolBlank, SymbolGet, etc) is an imageMorph. SymbolArray>>initialize super initialize. self add: SymbolBlank new. self add: SymbolGet new. self add: SymbolProcess new. self add: SymbolPut new. self add: SymbolIf new. self add: SymbolWhile new. Then I tried to modify the addSymbol method as show below. When I do, I get the following error message which sounds like I don't have an element at index 1. SymbolArray(OrderedCollection)>>errorNoSuchElement SymbolArray(OrderedCollection)>>at: | sa si | sa := SymbolArray new. si := sa at: 1. self addMorph: si. si topLeft: 2...@2. I hope someone can help me figure out how to accomplish what I want to do.
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