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#
# tkvirtevent.rb : treats virtual events
# 1998/07/16 by Hidetoshi Nagai <nagai@ai.kyutech.ac.jp>
#
require 'tk'
class TkVirtualEvent<TkObject
extend Tk
TkVirturlEventID = [0]
TkVirturlEventTBL = {}
def TkVirtualEvent.getobj(event)
obj = TkVirturlEventTBL[event]
obj ? obj : event
end
def TkVirtualEvent.info
tk_call('event', 'info').split(/\s+/).collect!{|seq|
TkVirtualEvent.getobj(seq[1..-2])
}
end
def initialize(*sequences)
@path = @id = format("<VirtEvent%.4d>", TkVirturlEventID[0])
TkVirturlEventID[0] += 1
add(*sequences)
end
def add(*sequences)
if sequences != []
tk_call('event', 'add', "<#{@id}>",
*(sequences.collect{|seq| "<#{tk_event_sequence(seq)}>"}) )
TkVirturlEventTBL[@id] = self
end
self
end
def delete(*sequences)
if sequences == []
tk_call('event', 'delete', "<#{@id}>")
TkVirturlEventTBL[@id] = nil
else
tk_call('event', 'delete', "<#{@id}>",
*(sequences.collect{|seq| "<#{tk_event_sequence(seq)}>"}) )
TkVirturlEventTBL[@id] = nil if info == []
end
self
end
def info
tk_call('event', 'info', "<#{@id}>").split(/\s+/).collect!{|seq|
l = seq.scan(/<*[^<>]+>*/).collect!{|subseq|
case (subseq)
when /^<<[^<>]+>>$/
TkVirtualEvent.getobj(subseq[1..-2])
when /^<[^<>]+>$/
subseq[1..-2]
else
subseq.split('')
end
}.flatten
(l.size == 1) ? l[0] : l
}
end
end
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