63 lines
1.8 KiB
Fennel
63 lines
1.8 KiB
Fennel
(local util (require :lib.util))
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(local {: attach-imstate : textbox} (util.require :editor.imstate))
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(local View (require :core.view))
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(local style (require :core.style))
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(local ReplView (View:extend))
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(fn ReplView.new [self conn]
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(ReplView.super.new self)
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(attach-imstate self)
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(set self.conn conn)
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(set self.log [])
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(set self.cmd "")
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(set self.scrollheight math.huge)
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(set self.scrollable true)
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(set self.pin-to-bottom-y self.scroll.to.y)
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(self.conn:listen self))
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(fn ReplView.try_close [self do_close]
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(self.conn:unlisten self)
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(ReplView.super.try_close self do_close))
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(fn ReplView.get_scrollable_size [self] self.scrollheight)
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(fn ReplView.append [self line]
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(table.insert self.log line))
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(fn ReplView.draw-cmd [{: cmd} view x y]
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(renderer.draw_text style.font cmd x y style.text)
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(+ (style.font:get_height) style.padding.y))
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(fn ReplView.submit [self ?cmd]
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(local cmd (or ?cmd self.cmd))
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(when (= ?cmd nil)
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(set self.cmd ""))
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(self:append {:draw #(self.draw-cmd $...) : cmd})
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(self.conn:submit cmd))
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(fn ReplView.draw [self]
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(self:draw_background style.background)
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(self:draw_scrollbar)
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(var x (- self.position.x self.scroll.x))
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(var y (- self.position.y self.scroll.y))
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(var rendered-h 0)
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; todo: cache sizes and avoid drawing if offscreen?
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; note: then offscreen items can't be focussed without further effort
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; todo: draw line numbers
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(each [i line (ipairs self.log)]
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(let [h (line:draw self x y)]
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(set y (+ y h))
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(set rendered-h (+ rendered-h h))))
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(set self.cmd (textbox self :command self.cmd x y self.size.x))
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(local pin-to-bottom (>= self.scroll.to.y (- self.scrollheight self.size.y)))
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(set self.scrollheight (+ rendered-h (style.font:get_height) 4))
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(when pin-to-bottom
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(set self.scroll.to.y (- self.scrollheight self.size.y))))
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ReplView
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