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|
#
# tk/virtevent.rb : treats virtual events
# 1998/07/16 by Hidetoshi Nagai <nagai@ai.kyutech.ac.jp>
#
require 'tk'
class TkVirtualEvent<TkObject
extend Tk
TkCommandNames = ['event'.freeze].freeze
(TkVirtualEventID = ["VirtEvent".freeze, TkUtil.untrust("00000")]).instance_eval{
@mutex = Mutex.new
def mutex; @mutex; end
freeze
}
TkVirtualEventTBL = TkCore::INTERP.create_table
TkCore::INTERP.init_ip_env{
TkVirtualEventTBL.mutex.synchronize{ TkVirtualEventTBL.clear }
}
class PreDefVirtEvent<self
def self.new(event, *sequences)
if event =~ /^<(<.*>)>$/
event = $1
elsif event !~ /^<.*>$/
event = '<' + event + '>'
end
TkVirtualEvent::TkVirtualEventTBL.mutex.synchronize{
if TkVirtualEvent::TkVirtualEventTBL.has_key?(event)
TkVirtualEvent::TkVirtualEventTBL[event]
else
# super(event, *sequences)
(obj = self.allocate).instance_eval{
initialize(event, *sequences)
TkVirtualEvent::TkVirtualEventTBL[@id] = self
}
end
}
end
def initialize(event, *sequences)
@path = @id = event
_add_sequences(sequences)
end
end
def TkVirtualEvent.getobj(event)
obj = nil
TkVirtualEventTBL.mutex.synchronize{
obj = TkVirtualEventTBL[event]
}
if obj
obj
else
if tk_call_without_enc('event', 'info').index("<#{event}>")
PreDefVirtEvent.new(event)
else
fail ArgumentError, "undefined virtual event '<#{event}>'"
end
end
end
def TkVirtualEvent.info
tk_call_without_enc('event', 'info').split(/\s+/).collect!{|seq|
TkVirtualEvent.getobj(seq[1..-2])
}
end
def initialize(*sequences)
TkVirtualEventID.mutex.synchronize{
# @path = @id = '<' + TkVirtualEventID.join('') + '>'
@path = @id = '<' + TkVirtualEventID.join(TkCore::INTERP._ip_id_) + '>'
TkVirtualEventID[1].succ!
}
_add_sequences(sequences)
end
def _add_sequences(seq_ary)
unless seq_ary.empty?
tk_call_without_enc('event', 'add', "<#{@id}>",
*(seq_ary.collect{|seq|
"<#{tk_event_sequence(seq)}>"
}) )
end
self
end
private :_add_sequences
def add(*sequences)
if sequences != []
_add_sequences(sequences)
TkVirtualEventTBL.mutex.synchronize{
TkVirtualEventTBL[@id] = self
}
end
self
end
def delete(*sequences)
if sequences.empty?
tk_call_without_enc('event', 'delete', "<#{@id}>")
TkVirtualEventTBL.mutex.synchronize{
TkVirtualEventTBL.delete(@id)
}
else
tk_call_without_enc('event', 'delete', "<#{@id}>",
*(sequences.collect{|seq|
"<#{tk_event_sequence(seq)}>"
}) )
if tk_call_without_enc('event','info',"<#{@id}>").empty?
TkVirtualEventTBL.mutex.synchronize{
TkVirtualEventTBL.delete(@id)
}
end
end
self
end
def info
tk_call_without_enc('event','info',"<#{@id}>").split(/\s+/).collect!{|seq|
lst = seq.scan(/<*[^<>]+>*/).collect!{|subseq|
case (subseq)
when /^<<[^<>]+>>$/
TkVirtualEvent.getobj(subseq[1..-2])
when /^<[^<>]+>$/
subseq[1..-2]
else
subseq.split('')
end
}.flatten
(lst.size == 1) ? lst[0] : lst
}
end
end
TkNamedVirtualEvent = TkVirtualEvent::PreDefVirtEvent
|
