← Back
Editing: EditorWindow.py
import sys import os import platform import re import imp from Tkinter import * import tkSimpleDialog import tkMessageBox import webbrowser from idlelib.MultiCall import MultiCallCreator from idlelib import WindowList from idlelib import SearchDialog from idlelib import GrepDialog from idlelib import ReplaceDialog from idlelib import PyParse from idlelib.configHandler import idleConf from idlelib import aboutDialog, textView, configDialog from idlelib import macosxSupport from idlelib import help # The default tab setting for a Text widget, in average-width characters. TK_TABWIDTH_DEFAULT = 8 _py_version = ' (%s)' % platform.python_version() def _sphinx_version(): "Format sys.version_info to produce the Sphinx version string used to install the chm docs" major, minor, micro, level, serial = sys.version_info release = '%s%s' % (major, minor) if micro: release += '%s' % (micro,) if level == 'candidate': release += 'rc%s' % (serial,) elif level != 'final': release += '%s%s' % (level[0], serial) return release def _find_module(fullname, path=None): """Version of imp.find_module() that handles hierarchical module names""" file = None for tgt in fullname.split('.'): if file is not None: file.close() # close intermediate files (file, filename, descr) = imp.find_module(tgt, path) if descr[2] == imp.PY_SOURCE: break # find but not load the source file module = imp.load_module(tgt, file, filename, descr) try: path = module.__path__ except AttributeError: raise ImportError, 'No source for module ' + module.__name__ if descr[2] != imp.PY_SOURCE: # If all of the above fails and didn't raise an exception,fallback # to a straight import which can find __init__.py in a package. m = __import__(fullname) try: filename = m.__file__ except AttributeError: pass else: file = None base, ext = os.path.splitext(filename) if ext == '.pyc': ext = '.py' filename = base + ext descr = filename, None, imp.PY_SOURCE return file, filename, descr class HelpDialog(object): def __init__(self): self.parent = None # parent of help window self.dlg = None # the help window iteself def display(self, parent, near=None): """ Display the help dialog. parent - parent widget for the help window near - a Toplevel widget (e.g. EditorWindow or PyShell) to use as a reference for placing the help window """ import warnings as w w.warn("EditorWindow.HelpDialog is no longer used by Idle.\n" "It will be removed in 3.6 or later.\n" "It has been replaced by private help.HelpWindow\n", DeprecationWarning, stacklevel=2) if self.dlg is None: self.show_dialog(parent) if near: self.nearwindow(near) def show_dialog(self, parent): self.parent = parent fn=os.path.join(os.path.abspath(os.path.dirname(__file__)),'help.txt') self.dlg = dlg = textView.view_file(parent,'Help',fn, modal=False) dlg.bind('<Destroy>', self.destroy, '+') def nearwindow(self, near): # Place the help dialog near the window specified by parent. # Note - this may not reposition the window in Metacity # if "/apps/metacity/general/disable_workarounds" is enabled dlg = self.dlg geom = (near.winfo_rootx() + 10, near.winfo_rooty() + 10) dlg.withdraw() dlg.geometry("=+%d+%d" % geom) dlg.deiconify() dlg.lift() def destroy(self, ev=None): self.dlg = None self.parent = None helpDialog = HelpDialog() # singleton instance, no longer used class EditorWindow(object): from idlelib.Percolator import Percolator from idlelib.ColorDelegator import ColorDelegator from idlelib.UndoDelegator import UndoDelegator from idlelib.IOBinding import IOBinding, filesystemencoding, encoding from idlelib import Bindings from Tkinter import Toplevel from idlelib.MultiStatusBar import MultiStatusBar help_url = None def __init__(self, flist=None, filename=None, key=None, root=None): if EditorWindow.help_url is None: dochome = os.path.join(sys.prefix, 'Doc', 'index.html') if sys.platform.count('linux'): # look for html docs in a couple of standard places pyver = 'python-docs-' + '%s.%s.%s' % sys.version_info[:3] if os.path.isdir('/var/www/html/python/'): # "python2" rpm dochome = '/var/www/html/python/index.html' else: basepath = '/usr/share/doc/' # standard location dochome = os.path.join(basepath, pyver, 'Doc', 'index.html') elif sys.platform[:3] == 'win': chmfile = os.path.join(sys.prefix, 'Doc', 'Python%s.chm' % _sphinx_version()) if os.path.isfile(chmfile): dochome = chmfile elif sys.platform == 'darwin': # documentation may be stored inside a python framework dochome = os.path.join(sys.prefix, 'Resources/English.lproj/Documentation/index.html') dochome = os.path.normpath(dochome) if os.path.isfile(dochome): EditorWindow.help_url = dochome if sys.platform == 'darwin': # Safari requires real file:-URLs EditorWindow.help_url = 'file://' + EditorWindow.help_url else: EditorWindow.help_url = "https://docs.python.org/%d.%d/" % sys.version_info[:2] self.flist = flist root = root or flist.root self.root = root try: sys.ps1 except AttributeError: sys.ps1 = '>>> ' self.menubar = Menu(root) self.top = top = WindowList.ListedToplevel(root, menu=self.menubar) if flist: self.tkinter_vars = flist.vars #self.top.instance_dict makes flist.inversedict available to #configDialog.py so it can access all EditorWindow instances self.top.instance_dict = flist.inversedict else: self.tkinter_vars = {} # keys: Tkinter event names # values: Tkinter variable instances self.top.instance_dict = {} self.recent_files_path = os.path.join(idleConf.GetUserCfgDir(), 'recent-files.lst') self.text_frame = text_frame = Frame(top) self.vbar = vbar = Scrollbar(text_frame, name='vbar') self.width = idleConf.GetOption('main','EditorWindow','width', type='int') text_options = { 'name': 'text', 'padx': 5, 'wrap': 'none', 'highlightthickness': 0, 'width': self.width, 'height': idleConf.GetOption('main', 'EditorWindow', 'height', type='int')} if TkVersion >= 8.5: # Starting with tk 8.5 we have to set the new tabstyle option # to 'wordprocessor' to achieve the same display of tabs as in # older tk versions. text_options['tabstyle'] = 'wordprocessor' self.text = text = MultiCallCreator(Text)(text_frame, **text_options) self.top.focused_widget = self.text self.createmenubar() self.apply_bindings() self.top.protocol("WM_DELETE_WINDOW", self.close) self.top.bind("<<close-window>>", self.close_event) if macosxSupport.isAquaTk(): # Command-W on editorwindows doesn't work without this. text.bind('<<close-window>>', self.close_event) # Some OS X systems have only one mouse button, so use # control-click for popup context menus there. For two # buttons, AquaTk defines <2> as the right button, not <3>. text.bind("<Control-Button-1>",self.right_menu_event) text.bind("<2>", self.right_menu_event) else: # Elsewhere, use right-click for popup menus. text.bind("<3>",self.right_menu_event) text.bind("<<cut>>", self.cut) text.bind("<<copy>>", self.copy) text.bind("<<paste>>", self.paste) text.bind("<<center-insert>>", self.center_insert_event) text.bind("<<help>>", self.help_dialog) text.bind("<<python-docs>>", self.python_docs) text.bind("<<about-idle>>", self.about_dialog) text.bind("<<open-config-dialog>>", self.config_dialog) text.bind("<<open-module>>", self.open_module) text.bind("<<do-nothing>>", lambda event: "break") text.bind("<<select-all>>", self.select_all) text.bind("<<remove-selection>>", self.remove_selection) text.bind("<<find>>", self.find_event) text.bind("<<find-again>>", self.find_again_event) text.bind("<<find-in-files>>", self.find_in_files_event) text.bind("<<find-selection>>", self.find_selection_event) text.bind("<<replace>>", self.replace_event) text.bind("<<goto-line>>", self.goto_line_event) text.bind("<<smart-backspace>>",self.smart_backspace_event) text.bind("<<newline-and-indent>>",self.newline_and_indent_event) text.bind("<<smart-indent>>",self.smart_indent_event) text.bind("<<indent-region>>",self.indent_region_event) text.bind("<<dedent-region>>",self.dedent_region_event) text.bind("<<comment-region>>",self.comment_region_event) text.bind("<<uncomment-region>>",self.uncomment_region_event) text.bind("<<tabify-region>>",self.tabify_region_event) text.bind("<<untabify-region>>",self.untabify_region_event) text.bind("<<toggle-tabs>>",self.toggle_tabs_event) text.bind("<<change-indentwidth>>",self.change_indentwidth_event) text.bind("<Left>", self.move_at_edge_if_selection(0)) text.bind("<Right>", self.move_at_edge_if_selection(1)) text.bind("<<del-word-left>>", self.del_word_left) text.bind("<<del-word-right>>", self.del_word_right) text.bind("<<beginning-of-line>>", self.home_callback) if flist: flist.inversedict[self] = key if key: flist.dict[key] = self text.bind("<<open-new-window>>", self.new_callback) text.bind("<<close-all-windows>>", self.flist.close_all_callback) text.bind("<<open-class-browser>>", self.open_class_browser) text.bind("<<open-path-browser>>", self.open_path_browser) self.set_status_bar() vbar['command'] = text.yview vbar.pack(side=RIGHT, fill=Y) text['yscrollcommand'] = vbar.set text['font'] = idleConf.GetFont(self.root, 'main', 'EditorWindow') text_frame.pack(side=LEFT, fill=BOTH, expand=1) text.pack(side=TOP, fill=BOTH, expand=1) text.focus_set() # usetabs true -> literal tab characters are used by indent and # dedent cmds, possibly mixed with spaces if # indentwidth is not a multiple of tabwidth, # which will cause Tabnanny to nag! # false -> tab characters are converted to spaces by indent # and dedent cmds, and ditto TAB keystrokes # Although use-spaces=0 can be configured manually in config-main.def, # configuration of tabs v. spaces is not supported in the configuration # dialog. IDLE promotes the preferred Python indentation: use spaces! usespaces = idleConf.GetOption('main', 'Indent', 'use-spaces', type='bool') self.usetabs = not usespaces # tabwidth is the display width of a literal tab character. # CAUTION: telling Tk to use anything other than its default # tab setting causes it to use an entirely different tabbing algorithm, # treating tab stops as fixed distances from the left margin. # Nobody expects this, so for now tabwidth should never be changed. self.tabwidth = 8 # must remain 8 until Tk is fixed. # indentwidth is the number of screen characters per indent level. # The recommended Python indentation is four spaces. self.indentwidth = self.tabwidth self.set_notabs_indentwidth() # If context_use_ps1 is true, parsing searches back for a ps1 line; # else searches for a popular (if, def, ...) Python stmt. self.context_use_ps1 = False # When searching backwards for a reliable place to begin parsing, # first start num_context_lines[0] lines back, then # num_context_lines[1] lines back if that didn't work, and so on. # The last value should be huge (larger than the # of lines in a # conceivable file). # Making the initial values larger slows things down more often. self.num_context_lines = 50, 500, 5000000 self.per = per = self.Percolator(text) self.undo = undo = self.UndoDelegator() per.insertfilter(undo) text.undo_block_start = undo.undo_block_start text.undo_block_stop = undo.undo_block_stop undo.set_saved_change_hook(self.saved_change_hook) # IOBinding implements file I/O and printing functionality self.io = io = self.IOBinding(self) io.set_filename_change_hook(self.filename_change_hook) # Create the recent files submenu self.recent_files_menu = Menu(self.menubar, tearoff=0) self.menudict['file'].insert_cascade(3, label='Recent Files', underline=0, menu=self.recent_files_menu) self.update_recent_files_list() self.color = None # initialized below in self.ResetColorizer if filename: if os.path.exists(filename) and not os.path.isdir(filename): io.loadfile(filename) else: io.set_filename(filename) self.ResetColorizer() self.saved_change_hook() self.set_indentation_params(self.ispythonsource(filename)) self.load_extensions() menu = self.menudict.get('windows') if menu: end = menu.index("end") if end is None: end = -1 if end >= 0: menu.add_separator() end = end + 1 self.wmenu_end = end WindowList.register_callback(self.postwindowsmenu) # Some abstractions so IDLE extensions are cross-IDE self.askyesno = tkMessageBox.askyesno self.askinteger = tkSimpleDialog.askinteger self.showerror = tkMessageBox.showerror def _filename_to_unicode(self, filename): """convert filename to unicode in order to display it in Tk""" if isinstance(filename, unicode) or not filename: return filename else: try: return filename.decode(self.filesystemencoding) except UnicodeDecodeError: # XXX try: return filename.decode(self.encoding) except UnicodeDecodeError: # byte-to-byte conversion return filename.decode('iso8859-1') def new_callback(self, event): dirname, basename = self.io.defaultfilename() self.flist.new(dirname) return "break" def home_callback(self, event): if (event.state & 4) != 0 and event.keysym == "Home": # state&4==Control. If <Control-Home>, use the Tk binding. return if self.text.index("iomark") and \ self.text.compare("iomark", "<=", "insert lineend") and \ self.text.compare("insert linestart", "<=", "iomark"): # In Shell on input line, go to just after prompt insertpt = int(self.text.index("iomark").split(".")[1]) else: line = self.text.get("insert linestart", "insert lineend") for insertpt in xrange(len(line)): if line[insertpt] not in (' ','\t'): break else: insertpt=len(line) lineat = int(self.text.index("insert").split('.')[1]) if insertpt == lineat: insertpt = 0 dest = "insert linestart+"+str(insertpt)+"c" if (event.state&1) == 0: # shift was not pressed self.text.tag_remove("sel", "1.0", "end") else: if not self.text.index("sel.first"): self.text.mark_set("my_anchor", "insert") # there was no previous selection else: if self.text.compare(self.text.index("sel.first"), "<", self.text.index("insert")): self.text.mark_set("my_anchor", "sel.first") # extend back else: self.text.mark_set("my_anchor", "sel.last") # extend forward first = self.text.index(dest) last = self.text.index("my_anchor") if self.text.compare(first,">",last): first,last = last,first self.text.tag_remove("sel", "1.0", "end") self.text.tag_add("sel", first, last) self.text.mark_set("insert", dest) self.text.see("insert") return "break" def set_status_bar(self): self.status_bar = self.MultiStatusBar(self.top) sep = Frame(self.top, height=1, borderwidth=1, background='grey75') if sys.platform == "darwin": # Insert some padding to avoid obscuring some of the statusbar # by the resize widget. self.status_bar.set_label('_padding1', ' ', side=RIGHT) self.status_bar.set_label('column', 'Col: ?', side=RIGHT) self.status_bar.set_label('line', 'Ln: ?', side=RIGHT) self.status_bar.pack(side=BOTTOM, fill=X) sep.pack(side=BOTTOM, fill=X) self.text.bind("<<set-line-and-column>>", self.set_line_and_column) self.text.event_add("<<set-line-and-column>>", "<KeyRelease>", "<ButtonRelease>") self.text.after_idle(self.set_line_and_column) def set_line_and_column(self, event=None): line, column = self.text.index(INSERT).split('.') self.status_bar.set_label('column', 'Col: %s' % column) self.status_bar.set_label('line', 'Ln: %s' % line) menu_specs = [ ("file", "_File"), ("edit", "_Edit"), ("format", "F_ormat"), ("run", "_Run"), ("options", "_Options"), ("windows", "_Window"), ("help", "_Help"), ] def createmenubar(self): mbar = self.menubar self.menudict = menudict = {} for name, label in self.menu_specs: underline, label = prepstr(label) menudict[name] = menu = Menu(mbar, name=name, tearoff=0) mbar.add_cascade(label=label, menu=menu, underline=underline) if macosxSupport.isCarbonTk(): # Insert the application menu menudict['application'] = menu = Menu(mbar, name='apple', tearoff=0) mbar.add_cascade(label='IDLE', menu=menu) self.fill_menus() self.base_helpmenu_length = self.menudict['help'].index(END) self.reset_help_menu_entries() def postwindowsmenu(self): # Only called when Windows menu exists menu = self.menudict['windows'] end = menu.index("end") if end is None: end = -1 if end > self.wmenu_end: menu.delete(self.wmenu_end+1, end) WindowList.add_windows_to_menu(menu) rmenu = None def right_menu_event(self, event): self.text.mark_set("insert", "@%d,%d" % (event.x, event.y)) if not self.rmenu: self.make_rmenu() rmenu = self.rmenu self.event = event iswin = sys.platform[:3] == 'win' if iswin: self.text.config(cursor="arrow") for item in self.rmenu_specs: try: label, eventname, verify_state = item except ValueError: # see issue1207589 continue if verify_state is None: continue state = getattr(self, verify_state)() rmenu.entryconfigure(label, state=state) rmenu.tk_popup(event.x_root, event.y_root) if iswin: self.text.config(cursor="ibeam") rmenu_specs = [ # ("Label", "<<virtual-event>>", "statefuncname"), ... ("Close", "<<close-window>>", None), # Example ] def make_rmenu(self): rmenu = Menu(self.text, tearoff=0) for item in self.rmenu_specs: label, eventname = item[0], item[1] if label is not None: def command(text=self.text, eventname=eventname): text.event_generate(eventname) rmenu.add_command(label=label, command=command) else: rmenu.add_separator() self.rmenu = rmenu def rmenu_check_cut(self): return self.rmenu_check_copy() def rmenu_check_copy(self): try: indx = self.text.index('sel.first') except TclError: return 'disabled' else: return 'normal' if indx else 'disabled' def rmenu_check_paste(self): try: self.text.tk.call('tk::GetSelection', self.text, 'CLIPBOARD') except TclError: return 'disabled' else: return 'normal' def about_dialog(self, event=None): "Handle Help 'About IDLE' event." # Synchronize with macosxSupport.overrideRootMenu.about_dialog. aboutDialog.AboutDialog(self.top,'About IDLE') def config_dialog(self, event=None): "Handle Options 'Configure IDLE' event." # Synchronize with macosxSupport.overrideRootMenu.config_dialog. configDialog.ConfigDialog(self.top,'Settings') def help_dialog(self, event=None): "Handle Help 'IDLE Help' event." # Synchronize with macosxSupport.overrideRootMenu.help_dialog. if self.root: parent = self.root else: parent = self.top help.show_idlehelp(parent) def python_docs(self, event=None): if sys.platform[:3] == 'win': try: os.startfile(self.help_url) except WindowsError as why: tkMessageBox.showerror(title='Document Start Failure', message=str(why), parent=self.text) else: webbrowser.open(self.help_url) return "break" def cut(self,event): self.text.event_generate("<<Cut>>") return "break" def copy(self,event): if not self.text.tag_ranges("sel"): # There is no selection, so do nothing and maybe interrupt. return self.text.event_generate("<<Copy>>") return "break" def paste(self,event): self.text.event_generate("<<Paste>>") self.text.see("insert") return "break" def select_all(self, event=None): self.text.tag_add("sel", "1.0", "end-1c") self.text.mark_set("insert", "1.0") self.text.see("insert") return "break" def remove_selection(self, event=None): self.text.tag_remove("sel", "1.0", "end") self.text.see("insert") def move_at_edge_if_selection(self, edge_index): """Cursor move begins at start or end of selection When a left/right cursor key is pressed create and return to Tkinter a function which causes a cursor move from the associated edge of the selection. """ self_text_index = self.text.index self_text_mark_set = self.text.mark_set edges_table = ("sel.first+1c", "sel.last-1c") def move_at_edge(event): if (event.state & 5) == 0: # no shift(==1) or control(==4) pressed try: self_text_index("sel.first") self_text_mark_set("insert", edges_table[edge_index]) except TclError: pass return move_at_edge def del_word_left(self, event): self.text.event_generate('<Meta-Delete>') return "break" def del_word_right(self, event): self.text.event_generate('<Meta-d>') return "break" def find_event(self, event): SearchDialog.find(self.text) return "break" def find_again_event(self, event): SearchDialog.find_again(self.text) return "break" def find_selection_event(self, event): SearchDialog.find_selection(self.text) return "break" def find_in_files_event(self, event): GrepDialog.grep(self.text, self.io, self.flist) return "break" def replace_event(self, event): ReplaceDialog.replace(self.text) return "break" def goto_line_event(self, event): text = self.text lineno = tkSimpleDialog.askinteger("Goto", "Go to line number:",parent=text) if lineno is None: return "break" if lineno <= 0: text.bell() return "break" text.mark_set("insert", "%d.0" % lineno) text.see("insert") def open_module(self, event=None): # XXX Shouldn't this be in IOBinding or in FileList? try: name = self.text.get("sel.first", "sel.last") except TclError: name = "" else: name = name.strip() name = tkSimpleDialog.askstring("Module", "Enter the name of a Python module\n" "to search on sys.path and open:", parent=self.text, initialvalue=name) if name: name = name.strip() if not name: return # XXX Ought to insert current file's directory in front of path try: (f, file_path, (suffix, mode, mtype)) = _find_module(name) except (NameError, ImportError) as msg: tkMessageBox.showerror("Import error", str(msg), parent=self.text) return if mtype != imp.PY_SOURCE: tkMessageBox.showerror("Unsupported type", "%s is not a source module" % name, parent=self.text) return if f: f.close() if self.flist: self.flist.open(file_path) else: self.io.loadfile(file_path) return file_path def open_class_browser(self, event=None): filename = self.io.filename if not (self.__class__.__name__ == 'PyShellEditorWindow' and filename): filename = self.open_module() if filename is None: return head, tail = os.path.split(filename) base, ext = os.path.splitext(tail) from idlelib import ClassBrowser ClassBrowser.ClassBrowser(self.flist, base, [head]) def open_path_browser(self, event=None): from idlelib import PathBrowser PathBrowser.PathBrowser(self.flist) def gotoline(self, lineno): if lineno is not None and lineno > 0: self.text.mark_set("insert", "%d.0" % lineno) self.text.tag_remove("sel", "1.0", "end") self.text.tag_add("sel", "insert", "insert +1l") self.center() def ispythonsource(self, filename): if not filename or os.path.isdir(filename): return True base, ext = os.path.splitext(os.path.basename(filename)) if os.path.normcase(ext) in (".py", ".pyw"): return True try: f = open(filename) line = f.readline() f.close() except IOError: return False return line.startswith('#!') and line.find('python') >= 0 def close_hook(self): if self.flist: self.flist.unregister_maybe_terminate(self) self.flist = None def set_close_hook(self, close_hook): self.close_hook = close_hook def filename_change_hook(self): if self.flist: self.flist.filename_changed_edit(self) self.saved_change_hook() self.top.update_windowlist_registry(self) self.ResetColorizer() def _addcolorizer(self): if self.color: return if self.ispythonsource(self.io.filename): self.color = self.ColorDelegator() # can add more colorizers here... if self.color: self.per.removefilter(self.undo) self.per.insertfilter(self.color) self.per.insertfilter(self.undo) def _rmcolorizer(self): if not self.color: return self.color.removecolors() self.per.removefilter(self.color) self.color = None def ResetColorizer(self): "Update the color theme" # Called from self.filename_change_hook and from configDialog.py self._rmcolorizer() self._addcolorizer() theme = idleConf.CurrentTheme() normal_colors = idleConf.GetHighlight(theme, 'normal') cursor_color = idleConf.GetHighlight(theme, 'cursor', fgBg='fg') select_colors = idleConf.GetHighlight(theme, 'hilite') self.text.config( foreground=normal_colors['foreground'], background=normal_colors['background'], insertbackground=cursor_color, selectforeground=select_colors['foreground'], selectbackground=select_colors['background'], ) if TkVersion >= 8.5: self.text.config( inactiveselectbackground=select_colors['background']) def ResetFont(self): "Update the text widgets' font if it is changed" # Called from configDialog.py self.text['font'] = idleConf.GetFont(self.root, 'main','EditorWindow') def RemoveKeybindings(self): "Remove the keybindings before they are changed." # Called from configDialog.py self.Bindings.default_keydefs = keydefs = idleConf.GetCurrentKeySet() for event, keylist in keydefs.items(): self.text.event_delete(event, *keylist) for extensionName in self.get_standard_extension_names(): xkeydefs = idleConf.GetExtensionBindings(extensionName) if xkeydefs: for event, keylist in xkeydefs.items(): self.text.event_delete(event, *keylist) def ApplyKeybindings(self): "Update the keybindings after they are changed" # Called from configDialog.py self.Bindings.default_keydefs = keydefs = idleConf.GetCurrentKeySet() self.apply_bindings() for extensionName in self.get_standard_extension_names(): xkeydefs = idleConf.GetExtensionBindings(extensionName) if xkeydefs: self.apply_bindings(xkeydefs) #update menu accelerators menuEventDict = {} for menu in self.Bindings.menudefs: menuEventDict[menu[0]] = {} for item in menu[1]: if item: menuEventDict[menu[0]][prepstr(item[0])[1]] = item[1] for menubarItem in self.menudict.keys(): menu = self.menudict[menubarItem] end = menu.index(END) if end is None: # Skip empty menus continue end += 1 for index in range(0, end): if menu.type(index) == 'command': accel = menu.entrycget(index, 'accelerator') if accel: itemName = menu.entrycget(index, 'label') event = '' if menubarItem in menuEventDict: if itemName in menuEventDict[menubarItem]: event = menuEventDict[menubarItem][itemName] if event: accel = get_accelerator(keydefs, event) menu.entryconfig(index, accelerator=accel) def set_notabs_indentwidth(self): "Update the indentwidth if changed and not using tabs in this window" # Called from configDialog.py if not self.usetabs: self.indentwidth = idleConf.GetOption('main', 'Indent','num-spaces', type='int') def reset_help_menu_entries(self): "Update the additional help entries on the Help menu" help_list = idleConf.GetAllExtraHelpSourcesList() helpmenu = self.menudict['help'] # first delete the extra help entries, if any helpmenu_length = helpmenu.index(END) if helpmenu_length > self.base_helpmenu_length: helpmenu.delete((self.base_helpmenu_length + 1), helpmenu_length) # then rebuild them if help_list: helpmenu.add_separator() for entry in help_list: cmd = self.__extra_help_callback(entry[1]) helpmenu.add_command(label=entry[0], command=cmd) # and update the menu dictionary self.menudict['help'] = helpmenu def __extra_help_callback(self, helpfile): "Create a callback with the helpfile value frozen at definition time" def display_extra_help(helpfile=helpfile): if not helpfile.startswith(('www', 'http')): helpfile = os.path.normpath(helpfile) if sys.platform[:3] == 'win': try: os.startfile(helpfile) except WindowsError as why: tkMessageBox.showerror(title='Document Start Failure', message=str(why), parent=self.text) else: webbrowser.open(helpfile) return display_extra_help def update_recent_files_list(self, new_file=None): "Load and update the recent files list and menus" rf_list = [] if os.path.exists(self.recent_files_path): with open(self.recent_files_path, 'r') as rf_list_file: rf_list = rf_list_file.readlines() if new_file: new_file = os.path.abspath(new_file) + '\n' if new_file in rf_list: rf_list.remove(new_file) # move to top rf_list.insert(0, new_file) # clean and save the recent files list bad_paths = [] for path in rf_list: if '\0' in path or not os.path.exists(path[0:-1]): bad_paths.append(path) rf_list = [path for path in rf_list if path not in bad_paths] ulchars = "1234567890ABCDEFGHIJK" rf_list = rf_list[0:len(ulchars)] try: with open(self.recent_files_path, 'w') as rf_file: rf_file.writelines(rf_list) except IOError as err: if not getattr(self.root, "recentfilelist_error_displayed", False): self.root.recentfilelist_error_displayed = True tkMessageBox.showwarning(title='IDLE Warning', message="Cannot update File menu Recent Files list. " "Your operating system says:\n%s\n" "Select OK and IDLE will continue without updating." % str(err), parent=self.text) # for each edit window instance, construct the recent files menu for instance in self.top.instance_dict.keys(): menu = instance.recent_files_menu menu.delete(0, END) # clear, and rebuild: for i, file_name in enumerate(rf_list): file_name = file_name.rstrip() # zap \n # make unicode string to display non-ASCII chars correctly ufile_name = self._filename_to_unicode(file_name) callback = instance.__recent_file_callback(file_name) menu.add_command(label=ulchars[i] + " " + ufile_name, command=callback, underline=0) def __recent_file_callback(self, file_name): def open_recent_file(fn_closure=file_name): self.io.open(editFile=fn_closure) return open_recent_file def saved_change_hook(self): short = self.short_title() long = self.long_title() if short and long: title = short + " - " + long + _py_version elif short: title = short elif long: title = long else: title = "Untitled" icon = short or long or title if not self.get_saved(): title = "*%s*" % title icon = "*%s" % icon self.top.wm_title(title) self.top.wm_iconname(icon) def get_saved(self): return self.undo.get_saved() def set_saved(self, flag): self.undo.set_saved(flag) def reset_undo(self): self.undo.reset_undo() def short_title(self): filename = self.io.filename if filename: filename = os.path.basename(filename) else: filename = "Untitled" # return unicode string to display non-ASCII chars correctly return self._filename_to_unicode(filename) def long_title(self): # return unicode string to display non-ASCII chars correctly return self._filename_to_unicode(self.io.filename or "") def center_insert_event(self, event): self.center() def center(self, mark="insert"): text = self.text top, bot = self.getwindowlines() lineno = self.getlineno(mark) height = bot - top newtop = max(1, lineno - height//2) text.yview(float(newtop)) def getwindowlines(self): text = self.text top = self.getlineno("@0,0") bot = self.getlineno("@0,65535") if top == bot and text.winfo_height() == 1: # Geometry manager hasn't run yet height = int(text['height']) bot = top + height - 1 return top, bot def getlineno(self, mark="insert"): text = self.text return int(float(text.index(mark))) def get_geometry(self): "Return (width, height, x, y)" geom = self.top.wm_geometry() m = re.match(r"(\d+)x(\d+)\+(-?\d+)\+(-?\d+)", geom) tuple = (map(int, m.groups())) return tuple def close_event(self, event): self.close() def maybesave(self): if self.io: if not self.get_saved(): if self.top.state()!='normal': self.top.deiconify() self.top.lower() self.top.lift() return self.io.maybesave() def close(self): reply = self.maybesave() if str(reply) != "cancel": self._close() return reply def _close(self): if self.io.filename: self.update_recent_files_list(new_file=self.io.filename) WindowList.unregister_callback(self.postwindowsmenu) self.unload_extensions() self.io.close() self.io = None self.undo = None if self.color: self.color.close(False) self.color = None self.text = None self.tkinter_vars = None self.per.close() self.per = None self.top.destroy() if self.close_hook: # unless override: unregister from flist, terminate if last window self.close_hook() def load_extensions(self): self.extensions = {} self.load_standard_extensions() def unload_extensions(self): for ins in self.extensions.values(): if hasattr(ins, "close"): ins.close() self.extensions = {} def load_standard_extensions(self): for name in self.get_standard_extension_names(): try: self.load_extension(name) except: print "Failed to load extension", repr(name) import traceback traceback.print_exc() def get_standard_extension_names(self): return idleConf.GetExtensions(editor_only=True) def load_extension(self, name): try: mod = __import__(name, globals(), locals(), []) except ImportError: print "\nFailed to import extension: ", name return cls = getattr(mod, name) keydefs = idleConf.GetExtensionBindings(name) if hasattr(cls, "menudefs"): self.fill_menus(cls.menudefs, keydefs) ins = cls(self) self.extensions[name] = ins if keydefs: self.apply_bindings(keydefs) for vevent in keydefs.keys(): methodname = vevent.replace("-", "_") while methodname[:1] == '<': methodname = methodname[1:] while methodname[-1:] == '>': methodname = methodname[:-1] methodname = methodname + "_event" if hasattr(ins, methodname): self.text.bind(vevent, getattr(ins, methodname)) def apply_bindings(self, keydefs=None): if keydefs is None: keydefs = self.Bindings.default_keydefs text = self.text text.keydefs = keydefs for event, keylist in keydefs.items(): if keylist: text.event_add(event, *keylist) def fill_menus(self, menudefs=None, keydefs=None): """Add appropriate entries to the menus and submenus Menus that are absent or None in self.menudict are ignored. """ if menudefs is None: menudefs = self.Bindings.menudefs if keydefs is None: keydefs = self.Bindings.default_keydefs menudict = self.menudict text = self.text for mname, entrylist in menudefs: menu = menudict.get(mname) if not menu: continue for entry in entrylist: if not entry: menu.add_separator() else: label, eventname = entry checkbutton = (label[:1] == '!') if checkbutton: label = label[1:] underline, label = prepstr(label) accelerator = get_accelerator(keydefs, eventname) def command(text=text, eventname=eventname): text.event_generate(eventname) if checkbutton: var = self.get_var_obj(eventname, BooleanVar) menu.add_checkbutton(label=label, underline=underline, command=command, accelerator=accelerator, variable=var) else: menu.add_command(label=label, underline=underline, command=command, accelerator=accelerator) def getvar(self, name): var = self.get_var_obj(name) if var: value = var.get() return value else: raise NameError, name def setvar(self, name, value, vartype=None): var = self.get_var_obj(name, vartype) if var: var.set(value) else: raise NameError, name def get_var_obj(self, name, vartype=None): var = self.tkinter_vars.get(name) if not var and vartype: # create a Tkinter variable object with self.text as master: self.tkinter_vars[name] = var = vartype(self.text) return var # Tk implementations of "virtual text methods" -- each platform # reusing IDLE's support code needs to define these for its GUI's # flavor of widget. # Is character at text_index in a Python string? Return 0 for # "guaranteed no", true for anything else. This info is expensive # to compute ab initio, but is probably already known by the # platform's colorizer. def is_char_in_string(self, text_index): if self.color: # Return true iff colorizer hasn't (re)gotten this far # yet, or the character is tagged as being in a string return self.text.tag_prevrange("TODO", text_index) or \ "STRING" in self.text.tag_names(text_index) else: # The colorizer is missing: assume the worst return 1 # If a selection is defined in the text widget, return (start, # end) as Tkinter text indices, otherwise return (None, None) def get_selection_indices(self): try: first = self.text.index("sel.first") last = self.text.index("sel.last") return first, last except TclError: return None, None # Return the text widget's current view of what a tab stop means # (equivalent width in spaces). def get_tabwidth(self): current = self.text['tabs'] or TK_TABWIDTH_DEFAULT return int(current) # Set the text widget's current view of what a tab stop means. def set_tabwidth(self, newtabwidth): text = self.text if self.get_tabwidth() != newtabwidth: pixels = text.tk.call("font", "measure", text["font"], "-displayof", text.master, "n" * newtabwidth) text.configure(tabs=pixels) # If ispythonsource and guess are true, guess a good value for # indentwidth based on file content (if possible), and if # indentwidth != tabwidth set usetabs false. # In any case, adjust the Text widget's view of what a tab # character means. def set_indentation_params(self, ispythonsource, guess=True): if guess and ispythonsource: i = self.guess_indent() if 2 <= i <= 8: self.indentwidth = i if self.indentwidth != self.tabwidth: self.usetabs = False self.set_tabwidth(self.tabwidth) def smart_backspace_event(self, event): text = self.text first, last = self.get_selection_indices() if first and last: text.delete(first, last) text.mark_set("insert", first) return "break" # Delete whitespace left, until hitting a real char or closest # preceding virtual tab stop. chars = text.get("insert linestart", "insert") if chars == '': if text.compare("insert", ">", "1.0"): # easy: delete preceding newline text.delete("insert-1c") else: text.bell() # at start of buffer return "break" if chars[-1] not in " \t": # easy: delete preceding real char text.delete("insert-1c") return "break" # Ick. It may require *inserting* spaces if we back up over a # tab character! This is written to be clear, not fast. tabwidth = self.tabwidth have = len(chars.expandtabs(tabwidth)) assert have > 0 want = ((have - 1) // self.indentwidth) * self.indentwidth # Debug prompt is multilined.... if self.context_use_ps1: last_line_of_prompt = sys.ps1.split('\n')[-1] else: last_line_of_prompt = '' ncharsdeleted = 0 while 1: if chars == last_line_of_prompt: break chars = chars[:-1] ncharsdeleted = ncharsdeleted + 1 have = len(chars.expandtabs(tabwidth)) if have <= want or chars[-1] not in " \t": break text.undo_block_start() text.delete("insert-%dc" % ncharsdeleted, "insert") if have < want: text.insert("insert", ' ' * (want - have)) text.undo_block_stop() return "break" def smart_indent_event(self, event): # if intraline selection: # delete it # elif multiline selection: # do indent-region # else: # indent one level text = self.text first, last = self.get_selection_indices() text.undo_block_start() try: if first and last: if index2line(first) != index2line(last): return self.indent_region_event(event) text.delete(first, last) text.mark_set("insert", first) prefix = text.get("insert linestart", "insert") raw, effective = classifyws(prefix, self.tabwidth) if raw == len(prefix): # only whitespace to the left self.reindent_to(effective + self.indentwidth) else: # tab to the next 'stop' within or to right of line's text: if self.usetabs: pad = '\t' else: effective = len(prefix.expandtabs(self.tabwidth)) n = self.indentwidth pad = ' ' * (n - effective % n) text.insert("insert", pad) text.see("insert") return "break" finally: text.undo_block_stop() def newline_and_indent_event(self, event): text = self.text first, last = self.get_selection_indices() text.undo_block_start() try: if first and last: text.delete(first, last) text.mark_set("insert", first) line = text.get("insert linestart", "insert") i, n = 0, len(line) while i < n and line[i] in " \t": i = i+1 if i == n: # the cursor is in or at leading indentation in a continuation # line; just inject an empty line at the start text.insert("insert linestart", '\n') return "break" indent = line[:i] # strip whitespace before insert point unless it's in the prompt i = 0 last_line_of_prompt = sys.ps1.split('\n')[-1] while line and line[-1] in " \t" and line != last_line_of_prompt: line = line[:-1] i = i+1 if i: text.delete("insert - %d chars" % i, "insert") # strip whitespace after insert point while text.get("insert") in " \t": text.delete("insert") # start new line text.insert("insert", '\n') # adjust indentation for continuations and block # open/close first need to find the last stmt lno = index2line(text.index('insert')) y = PyParse.Parser(self.indentwidth, self.tabwidth) if not self.context_use_ps1: for context in self.num_context_lines: startat = max(lno - context, 1) startatindex = repr(startat) + ".0" rawtext = text.get(startatindex, "insert") y.set_str(rawtext) bod = y.find_good_parse_start( self.context_use_ps1, self._build_char_in_string_func(startatindex)) if bod is not None or startat == 1: break y.set_lo(bod or 0) else: r = text.tag_prevrange("console", "insert") if r: startatindex = r[1] else: startatindex = "1.0" rawtext = text.get(startatindex, "insert") y.set_str(rawtext) y.set_lo(0) c = y.get_continuation_type() if c != PyParse.C_NONE: # The current stmt hasn't ended yet. if c == PyParse.C_STRING_FIRST_LINE: # after the first line of a string; do not indent at all pass elif c == PyParse.C_STRING_NEXT_LINES: # inside a string which started before this line; # just mimic the current indent text.insert("insert", indent) elif c == PyParse.C_BRACKET: # line up with the first (if any) element of the # last open bracket structure; else indent one # level beyond the indent of the line with the # last open bracket self.reindent_to(y.compute_bracket_indent()) elif c == PyParse.C_BACKSLASH: # if more than one line in this stmt already, just # mimic the current indent; else if initial line # has a start on an assignment stmt, indent to # beyond leftmost =; else to beyond first chunk of # non-whitespace on initial line if y.get_num_lines_in_stmt() > 1: text.insert("insert", indent) else: self.reindent_to(y.compute_backslash_indent()) else: assert 0, "bogus continuation type %r" % (c,) return "break" # This line starts a brand new stmt; indent relative to # indentation of initial line of closest preceding # interesting stmt. indent = y.get_base_indent_string() text.insert("insert", indent) if y.is_block_opener(): self.smart_indent_event(event) elif indent and y.is_block_closer(): self.smart_backspace_event(event) return "break" finally: text.see("insert") text.undo_block_stop() # Our editwin provides an is_char_in_string function that works # with a Tk text index, but PyParse only knows about offsets into # a string. This builds a function for PyParse that accepts an # offset. def _build_char_in_string_func(self, startindex): def inner(offset, _startindex=startindex, _icis=self.is_char_in_string): return _icis(_startindex + "+%dc" % offset) return inner def indent_region_event(self, event): head, tail, chars, lines = self.get_region() for pos in range(len(lines)): line = lines[pos] if line: raw, effective = classifyws(line, self.tabwidth) effective = effective + self.indentwidth lines[pos] = self._make_blanks(effective) + line[raw:] self.set_region(head, tail, chars, lines) return "break" def dedent_region_event(self, event): head, tail, chars, lines = self.get_region() for pos in range(len(lines)): line = lines[pos] if line: raw, effective = classifyws(line, self.tabwidth) effective = max(effective - self.indentwidth, 0) lines[pos] = self._make_blanks(effective) + line[raw:] self.set_region(head, tail, chars, lines) return "break" def comment_region_event(self, event): head, tail, chars, lines = self.get_region() for pos in range(len(lines) - 1): line = lines[pos] lines[pos] = '##' + line self.set_region(head, tail, chars, lines) def uncomment_region_event(self, event): head, tail, chars, lines = self.get_region() for pos in range(len(lines)): line = lines[pos] if not line: continue if line[:2] == '##': line = line[2:] elif line[:1] == '#': line = line[1:] lines[pos] = line self.set_region(head, tail, chars, lines) def tabify_region_event(self, event): head, tail, chars, lines = self.get_region() tabwidth = self._asktabwidth() if tabwidth is None: return for pos in range(len(lines)): line = lines[pos] if line: raw, effective = classifyws(line, tabwidth) ntabs, nspaces = divmod(effective, tabwidth) lines[pos] = '\t' * ntabs + ' ' * nspaces + line[raw:] self.set_region(head, tail, chars, lines) def untabify_region_event(self, event): head, tail, chars, lines = self.get_region() tabwidth = self._asktabwidth() if tabwidth is None: return for pos in range(len(lines)): lines[pos] = lines[pos].expandtabs(tabwidth) self.set_region(head, tail, chars, lines) def toggle_tabs_event(self, event): if self.askyesno( "Toggle tabs", "Turn tabs " + ("on", "off")[self.usetabs] + "?\nIndent width " + ("will be", "remains at")[self.usetabs] + " 8." + "\n Note: a tab is always 8 columns", parent=self.text): self.usetabs = not self.usetabs # Try to prevent inconsistent indentation. # User must change indent width manually after using tabs. self.indentwidth = 8 return "break" # XXX this isn't bound to anything -- see tabwidth comments ## def change_tabwidth_event(self, event): ## new = self._asktabwidth() ## if new != self.tabwidth: ## self.tabwidth = new ## self.set_indentation_params(0, guess=0) ## return "break" def change_indentwidth_event(self, event): new = self.askinteger( "Indent width", "New indent width (2-16)\n(Always use 8 when using tabs)", parent=self.text, initialvalue=self.indentwidth, minvalue=2, maxvalue=16) if new and new != self.indentwidth and not self.usetabs: self.indentwidth = new return "break" def get_region(self): text = self.text first, last = self.get_selection_indices() if first and last: head = text.index(first + " linestart") tail = text.index(last + "-1c lineend +1c") else: head = text.index("insert linestart") tail = text.index("insert lineend +1c") chars = text.get(head, tail) lines = chars.split("\n") return head, tail, chars, lines def set_region(self, head, tail, chars, lines): text = self.text newchars = "\n".join(lines) if newchars == chars: text.bell() return text.tag_remove("sel", "1.0", "end") text.mark_set("insert", head) text.undo_block_start() text.delete(head, tail) text.insert(head, newchars) text.undo_block_stop() text.tag_add("sel", head, "insert") # Make string that displays as n leading blanks. def _make_blanks(self, n): if self.usetabs: ntabs, nspaces = divmod(n, self.tabwidth) return '\t' * ntabs + ' ' * nspaces else: return ' ' * n # Delete from beginning of line to insert point, then reinsert # column logical (meaning use tabs if appropriate) spaces. def reindent_to(self, column): text = self.text text.undo_block_start() if text.compare("insert linestart", "!=", "insert"): text.delete("insert linestart", "insert") if column: text.insert("insert", self._make_blanks(column)) text.undo_block_stop() def _asktabwidth(self): return self.askinteger( "Tab width", "Columns per tab? (2-16)", parent=self.text, initialvalue=self.indentwidth, minvalue=2, maxvalue=16) # Guess indentwidth from text content. # Return guessed indentwidth. This should not be believed unless # it's in a reasonable range (e.g., it will be 0 if no indented # blocks are found). def guess_indent(self): opener, indented = IndentSearcher(self.text, self.tabwidth).run() if opener and indented: raw, indentsmall = classifyws(opener, self.tabwidth) raw, indentlarge = classifyws(indented, self.tabwidth) else: indentsmall = indentlarge = 0 return indentlarge - indentsmall # "line.col" -> line, as an int def index2line(index): return int(float(index)) # Look at the leading whitespace in s. # Return pair (# of leading ws characters, # effective # of leading blanks after expanding # tabs to width tabwidth) def classifyws(s, tabwidth): raw = effective = 0 for ch in s: if ch == ' ': raw = raw + 1 effective = effective + 1 elif ch == '\t': raw = raw + 1 effective = (effective // tabwidth + 1) * tabwidth else: break return raw, effective import tokenize _tokenize = tokenize del tokenize class IndentSearcher(object): # .run() chews over the Text widget, looking for a block opener # and the stmt following it. Returns a pair, # (line containing block opener, line containing stmt) # Either or both may be None. def __init__(self, text, tabwidth): self.text = text self.tabwidth = tabwidth self.i = self.finished = 0 self.blkopenline = self.indentedline = None def readline(self): if self.finished: return "" i = self.i = self.i + 1 mark = repr(i) + ".0" if self.text.compare(mark, ">=", "end"): return "" return self.text.get(mark, mark + " lineend+1c") def tokeneater(self, type, token, start, end, line, INDENT=_tokenize.INDENT, NAME=_tokenize.NAME, OPENERS=('class', 'def', 'for', 'if', 'try', 'while')): if self.finished: pass elif type == NAME and token in OPENERS: self.blkopenline = line elif type == INDENT and self.blkopenline: self.indentedline = line self.finished = 1 def run(self): save_tabsize = _tokenize.tabsize _tokenize.tabsize = self.tabwidth try: try: _tokenize.tokenize(self.readline, self.tokeneater) except (_tokenize.TokenError, SyntaxError): # since we cut off the tokenizer early, we can trigger # spurious errors pass finally: _tokenize.tabsize = save_tabsize return self.blkopenline, self.indentedline ### end autoindent code ### def prepstr(s): # Helper to extract the underscore from a string, e.g. # prepstr("Co_py") returns (2, "Copy"). i = s.find('_') if i >= 0: s = s[:i] + s[i+1:] return i, s keynames = { 'bracketleft': '[', 'bracketright': ']', 'slash': '/', } def get_accelerator(keydefs, eventname): keylist = keydefs.get(eventname) # issue10940: temporary workaround to prevent hang with OS X Cocoa Tk 8.5 # if not keylist: if (not keylist) or (macosxSupport.isCocoaTk() and eventname in { "<<open-module>>", "<<goto-line>>", "<<change-indentwidth>>"}): return "" s = keylist[0] s = re.sub(r"-[a-z]\b", lambda m: m.group().upper(), s) s = re.sub(r"\b\w+\b", lambda m: keynames.get(m.group(), m.group()), s) s = re.sub("Key-", "", s) s = re.sub("Cancel","Ctrl-Break",s) # dscherer@cmu.edu s = re.sub("Control-", "Ctrl-", s) s = re.sub("-", "+", s) s = re.sub("><", " ", s) s = re.sub("<", "", s) s = re.sub(">", "", s) return s def fixwordbreaks(root): # Make sure that Tk's double-click and next/previous word # operations use our definition of a word (i.e. an identifier) tk = root.tk tk.call('tcl_wordBreakAfter', 'a b', 0) # make sure word.tcl is loaded tk.call('set', 'tcl_wordchars', '[a-zA-Z0-9_]') tk.call('set', 'tcl_nonwordchars', '[^a-zA-Z0-9_]') def _editor_window(parent): # htest # # error if close master window first - timer event, after script root = parent fixwordbreaks(root) if sys.argv[1:]: filename = sys.argv[1] else: filename = None macosxSupport.setupApp(root, None) edit = EditorWindow(root=root, filename=filename) edit.text.bind("<<close-all-windows>>", edit.close_event) # Does not stop error, neither does following # edit.text.bind("<<close-window>>", edit.close_event) if __name__ == '__main__': from idlelib.idle_test.htest import run run(_editor_window)
Save File
Cancel