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354 lines
12 KiB
354 lines
12 KiB
6 years ago
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# IDLEX EXTENSION
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## """
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## Copyright(C) 2011 The Board of Trustees of the University of Illinois.
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## All rights reserved.
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##
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## Developed by: Roger D. Serwy
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## University of Illinois
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##
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## Permission is hereby granted, free of charge, to any person obtaining
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## a copy of this software and associated documentation files (the
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## "Software"), to deal with the Software without restriction, including
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## without limitation the rights to use, copy, modify, merge, publish,
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## distribute, sublicense, and/or sell copies of the Software, and to
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## permit persons to whom the Software is furnished to do so, subject to
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## the following conditions:
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##
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## + Redistributions of source code must retain the above copyright
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## notice, this list of conditions and the following disclaimers.
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## + Redistributions in binary form must reproduce the above copyright
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## notice, this list of conditions and the following disclaimers in the
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## documentation and/or other materials provided with the distribution.
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## + Neither the names of Roger D. Serwy, the University of Illinois, nor
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## the names of its contributors may be used to endorse or promote
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## products derived from this Software without specific prior written
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## permission.
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##
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## THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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## OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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## MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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## IN NO EVENT SHALL THE CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR
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## ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
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## CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH
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## THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE SOFTWARE.
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##
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##
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##
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## LineNumbers Extension
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##
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## Provides line numbers to the left of the source code.
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##
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## The width of the line numbers adapts. Limit of 99,999 lines (for proper display).
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##
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## """
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config_extension_def = """
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[LineNumbers]
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enable=1
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enable_shell=0
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visible=True
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[LineNumbers_cfgBindings]
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linenumbers-show=
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"""
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import sys
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if sys.version < '3':
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from Tkinter import END, Text, LEFT, Y, NONE, RIGHT, NORMAL, DISABLED, Label, TOP, Frame, X
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else:
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from tkinter import END, Text, LEFT, Y, NONE, RIGHT, NORMAL, DISABLED, Label, TOP, Frame, X
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from idlelib.configHandler import idleConf
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from idlelib.Delegator import Delegator
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from idlelib.Percolator import Percolator
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FONTUPDATEINTERVAL = 1000 # milliseconds
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_AFTER_UNDO = True # Flag to have the LineNumberDelegator inserted after the undo delegator
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jn = lambda x,y: '%i.%i' % (x,y) # join integers to text coordinates
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sp = lambda x: map(int, x.split('.')) # convert tkinter Text coordinate to a line and column tuple
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def dbprint(func): # A decorator for debugging
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def f(*args, **kwargs):
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print(func, args, kwargs)
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return func(*args, **kwargs)
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return f
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class LineNumbers(object):
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menudefs = [('options', [('!Show Line Numbers', '<<linenumbers-show>>')])]
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def __init__(self, editwin):
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self.editwin = editwin
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self.text = self.editwin.text
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self.textfont = None
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self.width = 2
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self.after_id = None
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self.create_linenumbers()
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e = idleConf.GetOption("extensions", "LineNumbers",
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"visible", type="bool", default=True)
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self.set_visible(e)
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self.code_context_fix()
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def close(self):
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if self.after_id:
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self.text.after_cancel(self.after_id)
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self.visible = False
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def adjust_font(self):
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try:
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# taken from CodeContext.py
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newtextfont = self.editwin.text["font"]
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if self.textln and newtextfont != self.textfont:
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self.textfont = newtextfont
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self.textln["font"] = self.textfont
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if self._cc_text:
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self._cc_text["font"] = self.textfont
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self.update_numbers()
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except Exception as err:
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import traceback; traceback.print_exc()
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def font_timer(self):
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if not self.visible:
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return
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self.adjust_font()
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if self.after_id:
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self.text.after_cancel(self.after_id)
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self.after_id = self.text.after(FONTUPDATEINTERVAL, self.font_timer)
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if not _AFTER_UNDO:
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self.update_numbers() # fixes a bug due to this percolator being ahead of undo percolator.
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def set_visible(self, b=True):
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self.visible = b
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if self.visible:
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self.text.after(1, self.font_timer) # avoid a start-up bug
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self.show()
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# use .after to avoid a start-up error caused by update_idletasks in update_numbers
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self.text.after(1, self.update_numbers)
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else:
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self.hide()
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idleConf.SetOption("extensions", "LineNumbers",
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"visible", '%s' % self.visible)
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self.editwin.setvar("<<linenumbers-show>>", self.visible)
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def linenumbers_show_event(self, ev=None):
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self.set_visible(not self.visible)
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self._code_context_toggle()
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def create_linenumbers(self):
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""" Create the widget for displaying line numbers. """
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editwin = self.editwin
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text = self.text
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text_frame = editwin.text_frame
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self.textln = textln = Text(text_frame, width=self.width,
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height=1, wrap=NONE)
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# adjust font
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textln.config(font=(idleConf.GetOption('main', 'EditorWindow', 'font'),
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idleConf.GetOption('main', 'EditorWindow', 'font-size')))
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textln.bind("<FocusIn>", self.focus_in_event)
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textln.bind('<Button-1>', self.button_ignore)
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textln.bind('<Button-2>', self.button_ignore)
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textln.bind('<Button-3>', self.button_ignore)
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textln.bind('<B1-Motion>', self.button_ignore)
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textln.bind('<B2-Motion>', self.button_ignore)
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textln.bind('<B3-Motion>', self.button_ignore)
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textln.bind("<Button-4>", self.button4)
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textln.bind("<Button-5>", self.button5)
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textln.tag_config('LINE', justify=RIGHT)
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textln.insert(END, '1')
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textln.tag_add('LINE', '1.0', END)
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# start the line numbers
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self.per = per = Percolator(textln)
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self.line_delegator = LineDelegator()
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per.insertfilter(self.line_delegator)
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textln._insert = self.line_delegator.delegate.insert
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textln._delete = self.line_delegator.delegate.delete
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lines = LineNumberDelegator(self)
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if _AFTER_UNDO:
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# Percolator.py's .insertfilter should have an "after=" argument
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lines.setdelegate(editwin.undo.delegate)
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editwin.undo.setdelegate(lines)
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else:
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editwin.per.insertfilter(lines)
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editwin.vbar['command'] = self.vbar_split
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editwin.text['yscrollcommand'] = self.yscroll_split
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def button4(self, ev=None):
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self.text.event_generate("<Button-4>")
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return "break"
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def button5(self, ev=None):
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self.text.event_generate("<Button-5>")
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return "break"
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def button_ignore(self, ev=None):
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return "break"
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def show(self):
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self.textln.pack(side=LEFT, fill=Y, before=self.editwin.text)
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def hide(self):
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self.textln.pack_forget()
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def focus_in_event(self, event=None):
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self.editwin.text.focus_set()
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self.textln.tag_remove('sel', '1.0', 'end')
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#self.editwin.text.event_generate("<<goto-line>>")
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def generate_goto_event(self, event=None):
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self.editwin.text.event_generate("<<goto-line>>")
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return "break"
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def vbar_split(self, *args, **kwargs):
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""" split scrollbar commands to the editor text widget and the line number widget """
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self.textln.yview(*args, **kwargs)
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self.text.yview(*args, **kwargs)
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def yscroll_split(self, *args, **kwargs):
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""" send yview commands to both the scroll bar and line number listing """
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#import traceback; traceback.print_stack()
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self.editwin.vbar.set(*args)
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self.textln.yview_moveto(args[0])
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def update_numbers(self, add=None, remove=None):
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if not self.visible: return
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textln = self.textln
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text = self.editwin.text
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endline1, col1 = sp(text.index(END))
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endline2, col2 = sp(textln.index(END))
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if endline1 < endline2:
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# delete numbers
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textln._delete('%i.0' % endline1, END)
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elif endline1 > endline2:
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# add numbers
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q = range(endline2, endline1)
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r = map(lambda x: '%i' % x, q)
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s = '\n' + '\n'.join(r)
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textln._insert(END, s)
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textln.tag_add('LINE', '1.0', END)
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# adjust width of textln, if needed. (counts from 1, not zero)
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if endline1 <= 100:
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width = 2
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elif endline1 <= 1000:
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width = 3
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elif endline1 <= 10000:
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width = 4
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else:
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width = 5 # more than 9999 lines in IDLE? Really?
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# XXX: If your code requires width>5, i.e > 100,000 lines of code,
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# you probably should not be using IDLE.
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if width > self.width: # 2011-12-18 - only grow, not shrink
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self.width = width
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textln.configure(width=width)
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if self._cc_text: # adjust CC width
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self._cc_text.configure(width=width)
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self.textln.update_idletasks()
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a = self.text.yview()
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self.textln.yview_moveto(a[0])
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def code_context_fix(self):
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self._cc_text = None
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self._cc_frame = None
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def f():
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self.text.bind('<<toggle-code-context>>', self._code_context_toggle, '+')
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self._code_context_toggle()
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self.text.after(10, f)
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def _code_context_toggle(self, event=None):
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cc = self.editwin.extensions.get('CodeContext', None)
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if cc is None:
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return
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if not self.visible:
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if self._cc_frame:
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L = cc.label
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L.pack_forget()
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self._cc_frame.destroy()
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L.pack(side=TOP, fill=X, expand=False,
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before=self.editwin.text_frame)
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return
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editwin = self.editwin
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text = self.text
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text_frame = editwin.text_frame
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# repack the Label in a frame
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if cc.label:
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cc.label.pack_forget()
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F = Frame(self.editwin.top)
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F.lower() # fix Z-order
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t = Text(F, width=self.width, height=1,
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takefocus=0)
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t.bind("<FocusIn>", lambda x: self.text.focus())
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t["font"] = self.textln.cget('font')
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t.pack(side=LEFT, fill=Y)
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cc.label.pack(in_=F, fill=X, expand=False)
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F.pack(side=TOP, before=text_frame, fill=X, expand=False)
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self._cc_frame = F
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self._cc_text = t
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else:
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if self._cc_frame:
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self._cc_frame.destroy()
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self._cc_frame = None
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self._cc_text = None
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class LineNumberDelegator(Delegator):
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# for editwin.text
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def __init__(self, line_number_instance):
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Delegator.__init__(self)
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self.ext = line_number_instance
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def insert(self, index, chars, tags=None):
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self.delegate.insert(index, chars, tags)
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if '\n' in chars:
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self.ext.update_numbers()#add=chars.count('\n'))
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def delete(self, index1, index2=None):
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t = self.get(index1, index2)
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self.delegate.delete(index1, index2)
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if '\n' in t:
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self.ext.update_numbers()#remove=t.count('\n'))
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class LineDelegator(Delegator):
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# for textln
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def insert(self, *args, **kargs):
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pass
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def delete(self, *args, **kargs):
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pass
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