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# snack.py: maps C extension module _snack to proper python types in module # snack. # The first section is a very literal mapping. # The second section contains convenience classes that amalgamate # the literal classes and make them more object-oriented. """ This module provides the NEWT Windowing toolkit API for Python This is a lightweight text-mode windowing library, based on slang. Classes: - Widget - Button - CompactButton - Checkbox - SingleRadioButton - Listbox - Textbox - TextboxReflowed - Label - Scale - Entry - Form - Grid - SnackScreen - RadioGroup - RadioBar - ButtonBar - GridFormHelp - GridForm - CheckboxTree - Clistbox Functions: - ListboxChoiceWindow - ButtonChoiceWindow - EntryWindow """ import _snack import types import string from _snack import FLAG_DISABLED, FLAGS_SET, FLAGS_RESET, FLAGS_TOGGLE, FD_READ, FD_WRITE, FD_EXCEPT LEFT = (-1, 0) DOWN = (-1, -1) CENTER = (0, 0) UP = (1, 1) RIGHT = (1, 0) snackArgs = {"append":-1} class Widget: """Base class for NEWT toolkit - Do not use directly methods: - Widget(self) - setCallback(self, obj, data = None) : The callback for when object activated. data is passed to obj. """ def setCallback(self, obj, data = None): if data: self.w.setCallback(obj, data) else: self.w.setCallback(obj) def __init__(self): raise NotImplementedError class Button(Widget): """Basic button class, takes button text as parameter method: - Button(self, text): returns a button """ def __init__(self, text): self.w = _snack.button(text) class CompactButton(Widget): """Compact Button class (less frilly button decoration). methods: - CompactButton(self,text) : create button, with text. """ def __init__(self, text): self.w = _snack.compactbutton(text) class Checkbox(Widget): """A checkbox. methods: - Checkbox(self, text, isOn = 0) : text, and boolean as to default value - setValue(self) : set value - value(self, value) : return checkbox value - selected(self) : returns boolean - setFlags(self, flag, sense) : set flags flags: FLAG_DISABLED, FLAGS_SET, FLAGS_RESET """ def value(self): return self.w.checkboxValue def selected(self): return self.w.checkboxValue != 0 def setFlags (self, flag, sense): return self.w.checkboxSetFlags(flag, sense) def setValue (self, value): return self.w.checkboxSetValue(value) def __init__(self, text, isOn = 0): self.w = _snack.checkbox(text, isOn) class SingleRadioButton(Widget): """Single Radio Button. methods: - SingleRadioButton(text, group, isOn = 0) : create button - selected(self) : returns bool, whether or not is selected. """ def selected(self): return self.w.key == self.w.radioValue; def __init__(self, text, group, isOn = 0): if group: self.w = _snack.radiobutton(text, group.w, isOn) else: self.w = _snack.radiobutton(text, None, isOn) class Listbox(Widget): """Listbox class. methods: - Listbox(self, height, scroll = 0, returnExit = 0, width = 0, showCursor = 0, multiple = 0, border = 0) - insert(self, text, item, before) : insert element; before = key to item to insert before, or None. - delete(self, item) : delete item from list. - replace(self, text,item) : Replace a given item's text - current(self) : returns currently selected item - getSelection(self) : returns a list of selected items - setCurrent(self,i tem) : select current. - clear(self) : clear listbox """ def append(self, text, item): key = self.w.listboxAddItem(text) self.key2item[key] = item self.item2key[item] = key def insert(self, text, item, before): if (not before): key = self.w.listboxInsertItem(text, 0) else: key = self.w.listboxInsertItem(text, self.item2key[before]) self.key2item[key] = item self.item2key[item] = key def delete(self, item): self.w.listboxDeleteItem(self.item2key[item]) del self.key2item[self.item2key[item]] del self.item2key[item] def replace(self, text, item): key = self.w.listboxInsertItem(text, self.item2key[item]) self.w.listboxDeleteItem(self.item2key[item]) del self.key2item[self.item2key[item]] self.item2key[item] = key self.key2item[key] = item def current(self): return self.key2item[self.w.listboxGetCurrent()] def getSelection(self): selection = [] list = self.w.listboxGetSelection() for key in list: selection.append(self.key2item[key]) return selection def setCurrent(self, item): self.w.listboxSetCurrent(self.item2key[item]) def clear(self): self.key2item = {} self.item2key = {} self.w.listboxClear() def __init__(self, height, scroll = 0, returnExit = 0, width = 0, showCursor = 0, multiple = 0, border = 0): self.w = _snack.listbox(height, scroll, returnExit, showCursor, multiple, border) self.key2item = {} self.item2key = {} if (width): self.w.listboxSetWidth(width) class Textbox(Widget): """Textbox, container for text. methods: - Textbox(self, width, height, scroll = 0, wrap = 0): scroll, wrap are flags include scroll bars, or text wrap. - setText(text) : set text. - setHeight(height): set height. """ def setText(self, text): self.w.textboxText(text) def setHeight(self, height): self.w.textboxHeight(height) def __init__(self, width, height, text, scroll = 0, wrap = 0): self.w = _snack.textbox(width, height, text, scroll, wrap) class TextboxReflowed(Textbox): def __init__(self, width, text, flexDown = 5, flexUp = 10, maxHeight = -1): (newtext, width, height) = reflow(text, width, flexDown, flexUp) if maxHeight != -1 and height > maxHeight: Textbox.__init__(self, width, maxHeight, newtext, 1) else: Textbox.__init__(self, width, height, newtext, 0) class Label(Widget): """A Label (simple text). methods: - Label(self,text) : create label - setText(self,text) : change text. - setColors(self, colorset) : change individual colors """ def setText(self, text): self.w.labelText(text) def __init__(self, text): self.w = _snack.label(text) def setColors(self, colorset): self.w.labelSetColors(colorset) class Scale(Widget): """A Scale (progress bar). methods: - Scale(self,width, total) : create scale; width: size on screen, fullamount: integer. - set(self,amount) : set amount to integer. """ def set(self, amount): self.w.scaleSet(amount) def __init__(self, width, total): self.w = _snack.scale(width, total) class Entry(Widget): """Entry widget. methods: - Entry(self, width, text = "", hidden = 0, password = 0, scroll = 1, returnExit = 0) constructor. hidden doesn't show text, password stars it out, scroll includes scroll bars; if returnExit is set, return from Form when exiting this element, else proceed to next entry widget. - value(self): return value. - set(text, cursorAtEnd = 1) : set the text - setFlags (flag, sense) : flags can be FLAG_DISABLED, FLAGS_SET, FLAGS_RESET, FLAGS_TOGGLE """ def value(self): return self.w.entryValue def set(self, text, cursorAtEnd = 1): return self.w.entrySetValue(text, cursorAtEnd) def setFlags (self, flag, sense): return self.w.entrySetFlags(flag, sense) def __init__(self, width, text = "", hidden = 0, password = 0, scroll = 1, returnExit = 0): self.w = _snack.entry(width, text, hidden, password, scroll, returnExit) # Form uses hotkeys hotkeys = { "F1" : _snack.KEY_F1, "F2" : _snack.KEY_F2, "F3" : _snack.KEY_F3, "F4" : _snack.KEY_F4, "F5" : _snack.KEY_F5, "F6" : _snack.KEY_F6, "F7" : _snack.KEY_F7, "F8" : _snack.KEY_F8, "F9" : _snack.KEY_F9, "F10" : _snack.KEY_F10, "F11" : _snack.KEY_F11, "F12" : _snack.KEY_F12, "ESC" : _snack.KEY_ESC, "ENTER": _snack.KEY_ENTER, "SUSPEND" : _snack.KEY_SUSPEND, "BACKSPACE": _snack.KEY_BACKSPACE, "DELETE": _snack.KEY_DELETE, "INSERT": _snack.KEY_INSERT, " " : ord(" ") } for n in hotkeys.keys(): hotkeys[hotkeys[n]] = n for o,c in [ (ord(c),c) for c in string.ascii_letters+string.digits ]: hotkeys[c] = o hotkeys[o] = c class Form: """ Base Form class, from which Grid, etc. inherit methods: - Form(self, helpArg = None) : constructor. - addHotKey(self, keyname) : keynames of form "F1" through "F12", "ESC" - add(self, widget) : Add a widget - run(self): run a form, expecting input - draw(self): draw form. - setTimer(self, timer) : add a timer - watchFile(self, file, flags) : watch a named file - setCurrent (self, co): Set a given widget as the current focus """ def addHotKey(self, keyname): self.w.addhotkey(hotkeys[keyname]) def add(self, widget): if widget.__dict__.has_key('hotkeys'): for key in widget.hotkeys.keys(): self.addHotKey(key) if widget.__dict__.has_key('gridmembers'): for w in widget.gridmembers: self.add(w) elif widget.__dict__.has_key('w'): self.trans[widget.w.key] = widget return self.w.add(widget.w) return None def run(self): (what, which) = self.w.run() if (what == _snack.FORM_EXIT_WIDGET): return self.trans[which] elif (what == _snack.FORM_EXIT_TIMER): return "TIMER" elif (what == _snack.FORM_EXIT_FDREADY): return self.filemap[which] return hotkeys[which] def draw(self): self.w.draw() return None def __init__(self, helpArg = None): self.trans = {} self.filemap = {} self.w = _snack.form(helpArg) # we do the reference count for the helpArg in python! gross self.helpArg = helpArg def setCurrent (self, co): self.w.setcurrent (co.w) def setTimer (self, timer): self.w.settimer (timer) def watchFile (self, file, flags): self.filemap[file.fileno()] = file self.w.watchfd (file.fileno(), flags) class Grid: """Grid class. methods: - place(self,x,y): Return what is placed at (x,y) - setField(self, what, col, row, padding = (0, 0, 0, 0), anchorLeft = 0, anchorTop = 0, anchorRight = 0, anchorBottom = 0, growx = 0, growy = 0): used to add widget 'what' to grid. - Grid(self, *args): eg. g = Grid(2,3) for 2x3 grid """ def place(self, x, y): return self.g.place(x, y) def setField(self, what, col, row, padding = (0, 0, 0, 0), anchorLeft = 0, anchorTop = 0, anchorRight = 0, anchorBottom = 0, growx = 0, growy = 0): self.gridmembers.append(what) anchorFlags = 0 if (anchorLeft): anchorFlags = _snack.ANCHOR_LEFT elif (anchorRight): anchorFlags = _snack.ANCHOR_RIGHT if (anchorTop): anchorFlags = anchorFlags | _snack.ANCHOR_TOP elif (anchorBottom): anchorFlags = anchorFlags | _snack.ANCHOR_BOTTOM gridFlags = 0 if (growx): gridFlags = _snack.GRID_GROWX if (growy): gridFlags = gridFlags | _snack.GRID_GROWY if (what.__dict__.has_key('g')): return self.g.setfield(col, row, what.g, padding, anchorFlags, gridFlags) else: return self.g.setfield(col, row, what.w, padding, anchorFlags) def __init__(self, *args): self.g = apply(_snack.grid, args) self.gridmembers = [] colorsets = { "ROOT" : _snack.COLORSET_ROOT, "BORDER" : _snack.COLORSET_BORDER, "WINDOW" : _snack.COLORSET_WINDOW, "SHADOW" : _snack.COLORSET_SHADOW, "TITLE" : _snack.COLORSET_TITLE, "BUTTON" : _snack.COLORSET_BUTTON, "ACTBUTTON" : _snack.COLORSET_ACTBUTTON, "CHECKBOX" : _snack.COLORSET_CHECKBOX, "ACTCHECKBOX" : _snack.COLORSET_ACTCHECKBOX, "ENTRY" : _snack.COLORSET_ENTRY, "LABEL" : _snack.COLORSET_LABEL, "LISTBOX" : _snack.COLORSET_LISTBOX, "ACTLISTBOX" : _snack.COLORSET_ACTLISTBOX, "TEXTBOX" : _snack.COLORSET_TEXTBOX, "ACTTEXTBOX" : _snack.COLORSET_ACTTEXTBOX, "HELPLINE" : _snack.COLORSET_HELPLINE, "ROOTTEXT" : _snack.COLORSET_ROOTTEXT, "EMPTYSCALE" : _snack.COLORSET_EMPTYSCALE, "FULLSCALE" : _snack.COLORSET_FULLSCALE, "DISENTRY" : _snack.COLORSET_DISENTRY, "COMPACTBUTTON" : _snack.COLORSET_COMPACTBUTTON, "ACTSELLISTBOX" : _snack.COLORSET_ACTSELLISTBOX, "SELLISTBOX" : _snack.COLORSET_SELLISTBOX } class SnackScreen: """A Screen; methods: - Screen(self) : constructor - finish(self) - resume(self) - suspend(self) - doHelpCallback(self,arg) call callback with arg - helpCallback(self,cb): Set help callback - suspendcallback(self,cb, data=None) : set callback. data=data to pass to cb. - openWindow(self,left, top, width, height, title): Open a window. - pushHelpLine(self,text): put help line on screen. Returns current help line if text=None - setColor(self, colorset, fg, bg): Set foreground and background colors; colorset = key from snack.colorsets, fg & bg = english color names defined by S-Lang (ref: S-Lang Library C Programmer's Guide section: 8.4.4. Setting Character Attributes) """ def __init__(self): _snack.init() (self.width, self.height) = _snack.size() self.pushHelpLine(None) def finish(self): return _snack.finish() def resume(self): _snack.resume() def suspend(self): _snack.suspend() def doHelpCallback(self, arg): self.helpCb(self, arg) def helpCallback(self, cb): self.helpCb = cb return _snack.helpcallback(self.doHelpCallback) def suspendCallback(self, cb, data = None): if data: return _snack.suspendcallback(cb, data) return _snack.suspendcallback(cb) def openWindow(self, left, top, width, height, title): return _snack.openwindow(left, top, width, height, title) def pushHelpLine(self, text): if (not text): return _snack.pushhelpline("*default*") else: return _snack.pushhelpline(text) def popHelpLine(self): return _snack.pophelpline() def drawRootText(self, left, top, text): return _snack.drawroottext(left, top, text) def centeredWindow(self, width, height, title): return _snack.centeredwindow(width, height, title) def gridWrappedWindow(self, grid, title, x = None, y = None): if x and y: return _snack.gridwrappedwindow(grid.g, title, x, y) return _snack.gridwrappedwindow(grid.g, title) def popWindow(self, refresh = True): if refresh: return _snack.popwindow() return _snack.popwindownorefresh() def refresh(self): return _snack.refresh() def setColor(self, colorset, fg, bg): if colorset in colorsets: return _snack.setcolor(colorsets[colorset], fg, bg) else: # assume colorset is an integer for the custom color set return _snack.setcolor(colorset, fg, bg) def reflow(text, width, flexDown = 5, flexUp = 5): """ returns a tuple of the wrapped text, the actual width, and the actual height """ return _snack.reflow(text, width, flexDown, flexUp) # combo widgets class RadioGroup(Widget): """ Combo widget: Group of Radio buttons methods: - RadioGroup(self): constructor. - add(self,title, value, default = None): add a button. Returns button. - getSelection(self) : returns value of selected button | None """ def __init__(self): self.prev = None self.buttonlist = [] def add(self, title, value, default = None): if not self.prev and default == None: # If the first element is not explicitly set to # not be the default, make it be the default default = 1 b = SingleRadioButton(title, self.prev, default) self.prev = b self.buttonlist.append((b, value)) return b def getSelection(self): for (b, value) in self.buttonlist: if b.selected(): return value return None class RadioBar(Grid): """ Bar of Radio buttons, based on Grid. methods: - RadioBar(self, screen, buttonlist) : constructor. - getSelection(self): return value of selected button """ def __init__(self, screen, buttonlist): self.list = [] self.item = 0 self.group = RadioGroup() Grid.__init__(self, 1, len(buttonlist)) for (title, value, default) in buttonlist: b = self.group.add(title, value, default) self.list.append((b, value)) self.setField(b, 0, self.item, anchorLeft = 1) self.item = self.item + 1 def getSelection(self): return self.group.getSelection() # you normally want to pack a ButtonBar with growx = 1 class ButtonBar(Grid): """ Bar of buttons, based on grid. methods: - ButtonBar(screen, buttonlist,buttonlist, compact = 0): - buttonPressed(self, result): Takes the widget returned by Form.run and looks to see if it was one of the widgets in the ButtonBar. """ def __init__(self, screen, buttonlist, compact = 0): self.list = [] self.hotkeys = {} self.item = 0 Grid.__init__(self, len(buttonlist), 1) for blist in buttonlist: if (type(blist) == types.StringType): title = blist value = string.lower(blist) elif len(blist) == 2: (title, value) = blist else: (title, value, hotkey) = blist self.hotkeys[hotkey] = value if compact: b = CompactButton(title) else: b = Button(title) self.list.append((b, value)) self.setField(b, self.item, 0, (1, 0, 1, 0)) self.item = self.item + 1 def buttonPressed(self, result): if self.hotkeys.has_key(result): return self.hotkeys[result] for (button, value) in self.list: if result == button: return value return None class GridFormHelp(Grid): """ Subclass of Grid, for the help form text. methods: - GridFormHelp(self, screen, title, help, *args) : - add (self, widget, col, row, padding = (0, 0, 0, 0), anchorLeft = 0, anchorTop = 0, anchorRight = 0, anchorBottom = 0, growx = 0, growy = 0): - runOnce(self, x = None, y = None): pop up the help window - addHotKey(self, keyname): - setTimer(self, keyname): - create(self, x = None, y = None): - run(self, x = None, y = None): - draw(self): - runPopup(self): - setCurrent (self, co): """ def __init__(self, screen, title, help, *args): self.screen = screen self.title = title self.form = Form(help) self.childList = [] self.form_created = 0 args = list(args) args[:0] = [self] apply(Grid.__init__, tuple(args)) def add(self, widget, col, row, padding = (0, 0, 0, 0), anchorLeft = 0, anchorTop = 0, anchorRight = 0, anchorBottom = 0, growx = 0, growy = 0): self.setField(widget, col, row, padding, anchorLeft, anchorTop, anchorRight, anchorBottom, growx, growy); self.childList.append(widget) def runOnce(self, x = None, y = None): result = self.run(x, y) self.screen.popWindow() return result def addHotKey(self, keyname): self.form.addHotKey(keyname) def setTimer(self, keyname): self.form.setTimer(keyname) def create(self, x = None, y = None): if not self.form_created: self.place(1,1) for child in self.childList: self.form.add(child) self.screen.gridWrappedWindow(self, self.title, x, y) self.form_created = 1 def run(self, x = None, y = None): self.create(x, y) return self.form.run() def draw(self): self.create() return self.form.draw() def runPopup(self): self.create() self.screen.gridWrappedWindow(self, self.title) result = self.form.run() self.screen.popWindow() return result def setCurrent (self, co): self.form.setCurrent (co) class GridForm(GridFormHelp): """ GridForm class (extends GridFormHelp): methods: - GridForm(self, screen, title, *args): """ def __init__(self, screen, title, *args): myargs = (self, screen, title, None) + args apply(GridFormHelp.__init__, myargs) class CheckboxTree(Widget): """ CheckboxTree combo widget, methods: - CheckboxTree(self, height, scroll = 0, width = None, hide_checkbox = 0, unselectable = 0) constructor. - append(self, text, item = None, selected = 0): - addItem(self, text, path, item = None, selected = 0): - getCurrent(self): - getSelection(self): - setEntry(self, item, text): - setCurrent(self, item): - setEntryValue(self, item, selected = 1): - getEntryValue(self, item): """ def append(self, text, item = None, selected = 0): self.addItem(text, (snackArgs['append'], ), item, selected) def addItem(self, text, path, item = None, selected = 0): if item is None: item = text key = self.w.checkboxtreeAddItem(text, path, selected) self.key2item[key] = item self.item2key[item] = key def getCurrent(self): curr = self.w.checkboxtreeGetCurrent() return self.key2item[curr] def __init__(self, height, scroll = 0, width = None, hide_checkbox = 0, unselectable = 0): self.w = _snack.checkboxtree(height, scroll, hide_checkbox, unselectable) self.key2item = {} self.item2key = {} if (width): self.w.checkboxtreeSetWidth(width) def getSelection(self): selection = [] list = self.w.checkboxtreeGetSelection() for key in list: selection.append(self.key2item[key]) return selection def setEntry(self, item, text): self.w.checkboxtreeSetEntry(self.item2key[item], text) def setCurrent(self, item): self.w.checkboxtreeSetCurrent(self.item2key[item]) def setEntryValue(self, item, selected = 1): self.w.checkboxtreeSetEntryValue(self.item2key[item], selected) def getEntryValue(self, item): return self.w.checkboxtreeGetEntryValue(self.item2key[item]) def ListboxChoiceWindow(screen, title, text, items, buttons = ('Ok', 'Cancel'), width = 40, scroll = 0, height = -1, default = None, help = None): """ - ListboxChoiceWindow(screen, title, text, items, buttons = ('Ok', 'Cancel'), width = 40, scroll = 0, height = -1, default = None, help = None): """ if (height == -1): height = len(items) bb = ButtonBar(screen, buttons) t = TextboxReflowed(width, text) l = Listbox(height, scroll = scroll, returnExit = 1) count = 0 for item in items: if (type(item) == types.TupleType): (text, key) = item else: text = item key = count if (default == count): default = key elif (default == item): default = key l.append(text, key) count = count + 1 if (default != None): l.setCurrent (default) g = GridFormHelp(screen, title, help, 1, 3) g.add(t, 0, 0) g.add(l, 0, 1, padding = (0, 1, 0, 1)) g.add(bb, 0, 2, growx = 1) rc = g.runOnce() return (bb.buttonPressed(rc), l.current()) def ButtonChoiceWindow(screen, title, text, buttons = [ 'Ok', 'Cancel' ], width = 40, x = None, y = None, help = None): """ - ButtonChoiceWindow(screen, title, text, buttons = [ 'Ok', 'Cancel' ], width = 40, x = None, y = None, help = None): """ bb = ButtonBar(screen, buttons) t = TextboxReflowed(width, text, maxHeight = screen.height - 12) g = GridFormHelp(screen, title, help, 1, 2) g.add(t, 0, 0, padding = (0, 0, 0, 1)) g.add(bb, 0, 1, growx = 1) return bb.buttonPressed(g.runOnce(x, y)) def EntryWindow(screen, title, text, prompts, allowCancel = 1, width = 40, entryWidth = 20, buttons = [ 'Ok', 'Cancel' ], help = None): """ EntryWindow(screen, title, text, prompts, allowCancel = 1, width = 40, entryWidth = 20, buttons = [ 'Ok', 'Cancel' ], help = None): """ bb = ButtonBar(screen, buttons); t = TextboxReflowed(width, text) count = 0 for n in prompts: count = count + 1 sg = Grid(2, count) count = 0 entryList = [] for n in prompts: if (type(n) == types.TupleType): (n, e) = n if (type(e) in types.StringTypes): e = Entry(entryWidth, e) else: e = Entry(entryWidth) sg.setField(Label(n), 0, count, padding = (0, 0, 1, 0), anchorLeft = 1) sg.setField(e, 1, count, anchorLeft = 1) count = count + 1 entryList.append(e) g = GridFormHelp(screen, title, help, 1, 3) g.add(t, 0, 0, padding = (0, 0, 0, 1)) g.add(sg, 0, 1, padding = (0, 0, 0, 1)) g.add(bb, 0, 2, growx = 1) result = g.runOnce() entryValues = [] count = 0 for n in prompts: entryValues.append(entryList[count].value()) count = count + 1 return (bb.buttonPressed(result), tuple(entryValues)) class CListbox(Grid): """Clistbox convenience class. methods: - Clistbox(self, height, cols, cols_widths, scroll = 0) : constructor - colFormText(self, col_text, align = None, adjust_width = 0) : column text. - append(self, col_text, item, col_text_align = None) : - insert(self, col_text, item, before, col_text_align = None) - delete(self, item) - replace(self, col_text, item, col_text_align = None) - current(self) : returns current item - setCurrent(self, item): sets an item as current - clear(self): clear the listbox Alignments may be LEFT, RIGHT, CENTER, None """ def __init__(self, height, cols, col_widths, scroll = 0, returnExit = 0, width = 0, col_pad = 1, col_text_align = None, col_labels = None, col_label_align = None, adjust_width=0): self.cols = cols self.col_widths = col_widths[:] self.col_pad = col_pad self.col_text_align = col_text_align if col_labels != None: Grid.__init__(self, 1, 2) box_y = 1 lstr = self.colFormText(col_labels, col_label_align, adjust_width=adjust_width) self.label = Label(lstr) self.setField(self.label, 0, 0, anchorLeft=1) else: Grid.__init__(self, 1, 1) box_y = 0 self.listbox = Listbox(height, scroll, returnExit, width) self.setField(self.listbox, 0, box_y, anchorRight=1) def colFormText(self, col_text, align = None, adjust_width=0): i = 0 str = "" c_len = len(col_text) while (i < self.cols) and (i < c_len): cstr = col_text[i] cstrlen = _snack.wstrlen(cstr) if self.col_widths[i] < cstrlen: if adjust_width: self.col_widths[i] = cstrlen else: cstr = cstr[:self.col_widths[i]] delta = self.col_widths[i] - _snack.wstrlen(cstr) if delta > 0: if align == None: a = LEFT else: a = align[i] if a == LEFT: cstr = cstr + (" " * delta) if a == CENTER: cstr = (" " * (delta / 2)) + cstr + \ (" " * ((delta + 1) / 2)) if a == RIGHT: cstr = (" " * delta) + cstr if i != c_len - 1: pstr = (" " * self.col_pad) else: pstr = "" str = str + cstr + pstr i = i + 1 return str def append(self, col_text, item, col_text_align = None): if col_text_align == None: col_text_align = self.col_text_align text = self.colFormText(col_text, col_text_align) self.listbox.append(text, item) def insert(self, col_text, item, before, col_text_align = None): if col_text_align == None: col_text_align = self.col_text_align text = self.colFormText(col_text, col_text_align) self.listbox.insert(text, item, before) def delete(self, item): self.listbox.delete(item) def replace(self, col_text, item, col_text_align = None): if col_text_align == None: col_text_align = self.col_text_align text = self.colFormText(col_text, col_text_align) self.listbox.replace(text, item) def current(self): return self.listbox.current() def setCurrent(self, item): self.listbox.setCurrent(item) def clear(self): self.listbox.clear() def customColorset(x): return 30 + x
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