42 lines
1019 B
Ruby
42 lines
1019 B
Ruby
require "base/constant_view"
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require "base/list_view"
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class InstructionView < ListView
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def initialize interpreter
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@interpreter = interpreter
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super([start_view])
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@interpreter.register_event(:instruction_changed, self)
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@interpreter.register_event(:state_changed, self)
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end
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def start_view
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ConstantView.new( "span.bright" , "starting" )
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end
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def instruction_changed
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@element.at_css(".bright").remove_class("bright")
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instruction = append_view( ConstantView.new( "span.bright" , instruction_text ) )
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wrap_node_with instruction , div
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remove_first if( @elements.length > 6)
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end
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def draw
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super()
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wrap_node_with @elements.first , div
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wrap_element div(".source_view") << div("h4" ,"Virtual Machine Instruction")
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@element
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end
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def state_changed old , new_s
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return unless new_s == :running
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clear_view
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append_view start_view
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end
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def instruction_text
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return "" unless @interpreter.instruction
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@interpreter.instruction.to_s
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end
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end
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