70 lines
1.7 KiB
Ruby
70 lines
1.7 KiB
Ruby
#
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# Editable_TkListbox class
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#
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# When "DoubleClick-1" on a listbox item, the entry box is opend on the
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# item. And when hit "Return" key on the entry box after modifying the
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# text, the entry box is closed and the item is changed. Or when hit
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# "Escape" key, the entry box is closed without modification.
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#
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# by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
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#
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require 'tk'
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class Editable_TkListbox < TkListbox
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def _ebox_placer(coord_y)
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idx = self.nearest(coord_y)
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x, y, w, h = self.bbox(idx)
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@ebox.place(:x => 0, :relwidth => 1.0,
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:y => y - self.selectborderwidth,
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:height => h + 2 * self.selectborderwidth)
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@ebox.pos = idx
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@ebox.value = self.listvariable.list[idx]
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@ebox.focus
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end
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private :_ebox_placer
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def create_self(keys)
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super(keys)
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unless self.listvariable
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self.listvariable = TkVariable.new(self.get(0, :end))
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end
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@ebox = TkEntry.new(self){
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@pos = -1
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def self.pos; @pos; end
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def self.pos=(idx); @pos = idx; end
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}
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@ebox.bind('Return'){
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list = self.listvariable.list
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list[@ebox.pos] = @ebox.value
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self.listvariable.value = list
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@ebox.place_forget
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@ebox.pos = -1
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}
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@ebox.bind('Escape'){
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@ebox.place_forget
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@ebox.pos = -1
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}
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self.bind('Double-1', '%y'){|y| _ebox_placer(y) }
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end
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end
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if $0 == __FILE__
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scr = TkScrollbar.new.pack(:side=>:right, :fill=>:y)
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lbox1 = Editable_TkListbox.new.pack(:side=>:left)
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lbox2 = Editable_TkListbox.new.pack(:side=>:left)
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scr.assign(lbox1, lbox2)
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lbox1.insert(:end, *%w(a b c d e f g h i j k l m n))
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lbox2.insert(:end, 0,1,2,3,4,5,6,7,8,9,0,1,2,3)
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Tk.mainloop
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end
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