split the interface code into multiple files
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# Helper functions and polyfills
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import asyncio, re, sys, io
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from typing import TextIO
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from prompt_toolkit import Application
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from prompt_toolkit.application.current import get_app
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from prompt_toolkit.output import ColorDepth, create_output
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from prompt_toolkit.layout import is_container, FormattedTextControl, Float
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from prompt_toolkit.layout.layout import Layout
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from prompt_toolkit.layout.containers import HSplit, VSplit, ConditionalContainer, Window
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from prompt_toolkit.widgets import Button, Dialog, Label
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from prompt_toolkit.key_binding import KeyBindings, merge_key_bindings
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from prompt_toolkit.key_binding.defaults import load_key_bindings
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from prompt_toolkit.filters import Condition, has_focus, is_true
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from prompt_toolkit.key_binding.bindings.focus import focus_next, focus_previous
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from prompt_toolkit.data_structures import Point
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# ------------------------------------------------------------
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# Interface
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# ------------------------------------------------------------
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class EncodingProxy(io.TextIOBase):
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def __init__(self, raw, encoding: str):
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self._raw = raw
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self._encoding = encoding
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# self.buffer = raw.buffer
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self.pipeReplace = False
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for ch in ["┌","┐","┘","└","─","│"]:
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if ch.encode(encoding,errors="replace").decode(encoding)!=ch:
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self.pipeReplace = True
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break
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@property
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def encoding(self) -> str:
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return self._encoding
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def write(self, s: str) -> int:
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if self.encoding=="ascii" or self.pipeReplace:
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for corner in ["┌","┐","┘","└"]:
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s=s.replace(corner,"+")
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s=s.replace("─","-")
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s=s.replace("│","|")
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pass
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byts = s.encode(self._encoding,errors="replace")
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# print(s.encode("utf8"),byts)
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self._raw.buffer.write(bytes(byts))
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self._raw.flush()
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return len(s)
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def flush(self) -> None:
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self._raw.flush()
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def fileno(self):
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return self._raw.fileno()
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def isatty(self):
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return True
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def createEncodedOutput(enc):
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proxy: TextIO = EncodingProxy(sys.stdout, encoding=enc)
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return create_output(proxy)
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def getColorDepth(intset):
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try:
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return ColorDepth(f"DEPTH_{intset["color"]}_BIT")
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except ValueError:
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return ColorDepth.DEPTH_4_BIT
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def defaultAppSettings(intset):
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return {"full_screen":True, "color_depth":getColorDepth(intset), "output": createEncodedOutput(intset["encoding"])}
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def containIfNeeded(el):
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if not is_container(el):
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return Window(el)
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return el
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def message_dialog( # derived from prompt_toolkit's code
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intset,
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title = "",
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text = "",
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ok_text: str = "Ok",
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style = None,
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) -> Application[None]:
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"""
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Display a simple message box and wait until the user presses enter.
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"""
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def _return_none() -> None:
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"Button handler that returns None."
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get_app().exit()
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dialog = Dialog(
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title=title,
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body=Label(text=text, dont_extend_height=True),
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buttons=[Button(text=ok_text, handler=_return_none)],
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with_background=True,
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)
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# Key bindings.
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bindings = KeyBindings()
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bindings.add("tab")(focus_next)
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bindings.add("s-tab")(focus_previous)
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return Application(
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layout=Layout(dialog),
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key_bindings=merge_key_bindings([load_key_bindings(), bindings]),
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style=style,
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**defaultAppSettings(intset)
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)
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class TabLayout():
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def __init__(self,kb,tabs,tabFocus,tabNames,name):
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self.tabs = tabs
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self.tabFocus = tabFocus
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self.tabNames = tabNames
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self.current = 0
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self.control = False
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self.tabEls = [ConditionalContainer(content=tabs[i],filter=Condition(lambda i=i: self.current==i)) for i in range(len(tabs))]
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# tab bar
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self.tbarEls = [ConditionalContainer(Label("StingNET [WIP]"),Condition(lambda: get_app().output.get_size().columns >= 90)),ConditionalContainer(content=Label("[Ctrl-Up] ",dont_extend_width=True,style="fg:#bbbbbb"),filter=Condition(lambda: not self.control)),ConditionalContainer(content=Label("[Left/Right/Enter] ",dont_extend_width=True),filter=Condition(lambda: self.control))]
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self.tbarBtns = []
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for i in range(len(tabNames)):
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def handle(i=i):
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self.current=i
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self.control=False
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self.focusTabWindow()
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btn = Button(text=tabNames[i],handler=handle,width=16)
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self.tbarEls.append(btn)
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self.tbarBtns.append(btn)
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self.tbarEls=self.tbarEls+[Label(f" {name}",dont_extend_width=True,style="fg:#bbbbbb")]
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self.tbar = VSplit(self.tbarEls,style="bg:#404040")
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self.el = HSplit([self.tbar,VSplit(self.tabEls)])
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# controls
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@kb.add("c-up")
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@kb.add("c-j")
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def _(e):
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self.control = True
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self.focusCurrent(e)
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@kb.add("left",filter=Condition(lambda: self.control))
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def _(e):
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self.current = (self.current+len(tabNames)-1)%len(tabNames)
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self.focusCurrent(e)
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@kb.add("right",filter=Condition(lambda: self.control))
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def _(e):
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self.current = (self.current+1)%len(tabNames)
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self.focusCurrent(e)
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def focusTabWindow(self):
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try:
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el = self.tabs[self.current]
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if self.tabFocus[self.current]:
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el = self.tabFocus[self.current]
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get_app().layout.focus(el)
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except Exception:
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pass
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def focusCurrent(self,e=None):
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app = e.app if e else get_app()
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app.layout.focus(self.tbarBtns[self.current])
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class HSelectLayout():
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def __init__(self,kb,opts,optFocus,optNames):
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self.opts=opts
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self.optFocus=optFocus
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self.optNames=optNames
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self.current = 0
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self.select = Window(FormattedTextControl(text=self.show_sel,get_cursor_position=self.curpos,key_bindings=self.make_select_kb()),width=16,dont_extend_height=False,style="bg:#353535")
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self.els = [self.select]+[ConditionalContainer(content=containIfNeeded(opts[i]),filter=Condition(lambda i=i: self.current==i)) for i in range(len(opts))]
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self.el = VSplit(self.els)
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self.returnFilter = has_focus(self.el) & ~has_focus(self.select)
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@kb.add("c-left",filter=self.returnFilter)
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@kb.add("c-h",filter=self.returnFilter)
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@kb.add("escape",filter=self.returnFilter)
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def _(e):
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e.app.layout.focus(self.select)
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def make_select_kb(self):
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kb = KeyBindings()
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l = len(self.optNames)
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@kb.add("up")
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def _(e):
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self.current = (self.current+l-1)%l
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@kb.add("down")
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def _(e):
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self.current = (self.current+1)%l
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@kb.add("enter")
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@kb.add("c-right")
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@kb.add("c-l")
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@kb.add(" ")
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def _(e):
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self.focusTabWindow()
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return kb
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def show_sel(self):
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o = []
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size = get_app().output.get_size()
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height = size.rows
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for i in range(len(self.opts)):
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name = self.optNames[i]
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o.append(("reverse",name) if i==self.current else ("",name))
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o.append((""," \n"))
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for i in range(height-len(self.opts)-2):
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o.append(("","\n"))
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if is_true(self.returnFilter):
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o.append(("fg:#bbbbbb","[Ctrl-Left/ESC]"))
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return o
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def curpos(self):
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return Point(x=len(self.optNames[self.current]),y=self.current)
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def focusTabWindow(self):
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if self.optFocus[self.current]:
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try:
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el = self.optFocus[self.current]
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get_app().layout.focus(el)
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return
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except Exception:
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pass
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try:
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el = self.opts[self.current]
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get_app().layout.focus(el)
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return
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except Exception:
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pass
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try:
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el = self.els[self.current+1]
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get_app().layout.focus(el)
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return
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except Exception:
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pass
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quitKB = KeyBindings()
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@quitKB.add("c-q",eager=True)
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def exit_(event):
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event.app.exit()
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def spawnDialog(dlg,floats):
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app = get_app()
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f = Float(content=dlg)
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floats.append(f)
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prev = app.layout.current_window
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app.layout.focus(dlg)
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app.invalidate()
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def despawn():
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floats.remove(f)
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app.layout.focus(prev)
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app.invalidate()
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return despawn
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async def spawnSimplePopup(title,body,floats):
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title = str(title)
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if type(body)==str:
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body=Label(body)
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res = asyncio.get_running_loop().create_future()
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def handler():
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if not res.done():
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res.set_result(True)
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despawn()
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dlg = Dialog(
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title=title,
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body=body,
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buttons=[
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Button("OK",handler=handler)
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]
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)
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despawn = spawnDialog(dlg,floats)
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return await res
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async def spawnYesNoPopup(title,body,floats):
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title = str(title)
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if type(body)==str:
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body=Label(body)
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res = asyncio.get_running_loop().create_future()
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def handler(r):
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if not res.done():
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res.set_result(r)
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despawn()
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dlg = Dialog(
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title=title,
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body=body,
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buttons=[
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Button("Yes",handler=lambda: handler(True)),
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Button("No",handler=lambda: handler(False))
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]
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)
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despawn = spawnDialog(dlg,floats)
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return await res
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def HButtonSelect(buttonArgs):
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kb = KeyBindings()
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# layout = get_app().layout
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btns = [Button(e[0],e[1],width=48) for e in buttonArgs]
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first_selected = has_focus(btns[0])
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last_selected = has_focus(btns[-1])
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@kb.add("up",filter=~first_selected)
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def _(e):
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focus_previous(e)
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@kb.add("down",filter=~last_selected)
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def _(e):
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focus_next(e)
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return HSplit(btns,key_bindings=kb)
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# ------------------------------------------------------------
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# Server/Other
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# ------------------------------------------------------------
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def errorTxt(obj):
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if obj["server"]:
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return f"Server error: {obj["error"]}"
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return f"Client error: {obj["error"]}"
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def isValidUsername(name):
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if len(name)<3 or len(name)>16: return False
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pattern = re.compile("^[a-z][a-z0-9-_]*")
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match = pattern.match(name)
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if match==None: return False
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return match.start()==0 and match.end()==len(name)
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