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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
)absolute_importprint_functionunicode_literalsN)
FLAG_DISABLED FLAGS_SET FLAGS_RESET FLAGS_TOGGLEFD_READFD_WRITE FD_EXCEPT appendc @ s" e Zd ZdZdddZdd ZdS )WidgetzBase 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.
Nc C s$ |r| j j|| n | j j| d S )N)w setCallback)selfobjdata r /usr/lib64/python3.6/snack.pyr D s zWidget.setCallbackc C s t d S )N)NotImplementedError)r r r r __init__J s zWidget.__init__)N)__name__
__module__ __qualname____doc__r r r r r r r : s
r c @ s e Zd ZdZdd ZdS )ButtonzqBasic button class, takes button text as parameter
method:
- Button(self, text): returns a button
c C s t j|| _d S )N)_snackbuttonr )r textr r r r T s zButton.__init__N)r r r r r r r r r r M s r c @ s e Zd ZdZdd ZdS )
CompactButtonzCompact Button class (less frilly button decoration).
methods:
- CompactButton(self,text) : create button, with text.
c C s t j|| _d S )N)r Z
compactbuttonr )r r r r r r ^ s zCompactButton.__init__N)r r r r r r r r r r W s r c @ s: e Zd ZdZdd Zdd Zdd Zdd Zdd d Zd
S )Checkboxa 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
c C s | j jS )N)r
checkboxValue)r r r r valuen s zCheckbox.valuec C s | j jdkS )Nr )r r" )r r r r selectedq s zCheckbox.selectedc C s | j j||S )N)r ZcheckboxSetFlags)r flagsenser r r setFlagst s zCheckbox.setFlagsc C s | j j|S )N)r ZcheckboxSetValue)r r# r r r setValuex s zCheckbox.setValuer c C s t j||| _d S )N)r Zcheckboxr )r r isOnr r r r { s zCheckbox.__init__N)r ) r r r r r# r$ r' r( r r r r r r! a s r! c @ s" e Zd ZdZdd ZdddZdS ) SingleRadioButtonzSingle Radio Button.
methods:
- SingleRadioButton(text, group, isOn = 0) : create button
- selected(self) : returns bool, whether or not is selected.
c C s | j j| j jkS )N)r keyZ
radioValue)r r r r r$ s zSingleRadioButton.selectedr c C s, |rt j||j|| _nt j|d || _d S )N)r Z radiobuttonr )r r groupr) r r r r s zSingleRadioButton.__init__N)r )r r r r r$ r r r r r r* ~ s r* c @ sZ e Zd ZdZdd Zdd Zdd Zdd Zd
d Zd d
Z dd Z
dd Z dddZ dS )Listboxa 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
c C s$ | j j|}|| j|< || j|< d S )N)r ZlistboxAddItemkey2itemitem2key)r r itemr+ r r r r
s
zListbox.appendc C s@ |s| j j|d}n| j j|| j| }|| j|< || j|< d S )Nr )r listboxInsertItemr/ r. )r r r0 beforer+ r r r insert s
zListbox.insertc C s, | j j| j| | j| j| = | j|= d S )N)r listboxDeleteItemr/ r. )r r0 r r r delete s zListbox.deletec C sL | j j|| j| }| j j| j| | j| j| = || j|< || j|< d S )N)r r1 r/ r4 r. )r r r0 r+ r r r replace s
zListbox.replacec C s | j | jj S )N)r. r ZlistboxGetCurrent)r r r r current s zListbox.currentc C s0 g }| j j }x |D ]}|j| j| qW |S )N)r ZlistboxGetSelectionr
r. )r selectionlistr+ r r r getSelection s
zListbox.getSelectionc C s | j j| j| d S )N)r ZlistboxSetCurrentr/ )r r0 r r r
setCurrent s zListbox.setCurrentc C s i | _ i | _| jj d S )N)r. r/ r Z listboxClear)r r r r clear s z
Listbox.clearr c C s6 t j||||||| _i | _i | _|r2| jj| d S )N)r listboxr r. r/ ZlistboxSetWidth)r heightscroll
returnExitwidthZ
showCursorZmultipleZborderr r r r s
zListbox.__init__N)r r r r r r )
r r r r r
r3 r5 r6 r7 r: r; r< r r r r r r- s
r- c @ s* e Zd ZdZdd Zdd Zd
ddZd S ) Textboxa 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.
c C s | j j| d S )N)r Z textboxText)r r r r r setText s zTextbox.setTextc C s | j j| d S )N)r Z
textboxHeight)r r> r r r setHeight s zTextbox.setHeightr c C s t j|||||| _d S )N)r Ztextboxr )r rA r> r r? Zwrapr r r r s zTextbox.__init__N)r r )r r r r rC rD r r r r r rB s rB c @ s e Zd ZdddZdS ) TextboxReflowed
r c C sN t ||||\}}}|dkr8||kr8tj| |||d ntj| |||d d S )Nr r )reflowrB r )r rA r flexDownflexUp maxHeightZnewtextr> r r r r s zTextboxReflowed.__init__NrH )rF rG rH )r r r r r r r r rE s rE c @ s( e Zd ZdZdd Zdd Zdd ZdS ) LabelzA Label (simple text).
methods:
- Label(self,text) : create label
- setText(self,text) : change text.
- setColors(self, colorset) : change individual colors
c C s | j j| d S )N)r Z labelText)r r r r r rC s z
Label.setTextc C s t j|| _d S )N)r labelr )r r r r r r s zLabel.__init__c C s | j j| d S )N)r ZlabelSetColors)r colorsetr r r setColors s zLabel.setColorsN)r r r r rC r rP r r r r rM s rM c @ s e Zd ZdZdd Zdd ZdS )ScalezA Scale (progress bar).
methods:
- Scale(self,width, total) : create scale; width: size on screen, fullamount: integer.
- set(self,amount) : set amount to integer.
c C s | j j| d S )N)r ZscaleSet)r Zamountr r r set s z Scale.setc C s t j||| _d S )N)r Zscaler )r rA Ztotalr r r r s zScale.__init__N)r r r r rR r r r r r rQ s rQ c @ s4 e Zd ZdZdd ZdddZdd Zdd d Zd
S )Entrya 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
c C s | j jS )N)r Z
entryValue)r r r r r# s z Entry.valuer c C s | j j||S )N)r Z
entrySetValue)r r Z cursorAtEndr r r rR s z Entry.setc C s | j j||S )N)r Z
entrySetFlags)r r% r& r r r r' " s zEntry.setFlags r c C s t j||||||| _d S )N)r entryr )r rA r ZhiddenZpasswordr? r@ r r r r % s zEntry.__init__N)r )rT r r r r )r r r r r# rR r' r r r r r rS s
rS )ZF1ZF2ZF3ZF4ZF5ZF6ZF7ZF8ZF9ZF10ZF11ZF12ZESCZENTERZSUSPENDZ BACKSPACEZDELETEZINSERTZRESIZErV c C s g | ]}t ||fqS r )ord).0cr r r
7 s rZ c @ sR e Zd ZdZdd Zdd Zdd Zdd Zdd d Zd
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S )Forma 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
c C s | j jt| d S )N)r Z addhotkeyhotkeys)r keynamer r r addHotKeyI s zForm.addHotKeyc C sx d|j kr(x |jj D ]}| j| qW d|j krNx@|jD ]}| j| q:W n&d|j krt|| j|jj< | jj|jS d S )Nr\ gridmembersr ) __dict__r\ keysr^ r_ addtransr r+ )r widgetr+ r r r r rb L s
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dd S )NZTIMERzEOF or IO error) r runr ZFORM_EXIT_WIDGETrc ZFORM_EXIT_TIMERZFORM_EXIT_FDREADYfilemapZFORM_EXIT_HOTKEYr\ RuntimeError)r whatZwhichr r r re Y s
zForm.runc C s | j j d S )N)r draw)r r r r ri e s
z Form.drawNc C s" i | _ i | _tj|| _|| _d S )N)rc rf r formr helpArg)r rk r r r r i s z
Form.__init__c C s | j j|j d S )N)r Z
setcurrent)r cor r r r; p s zForm.setCurrentc C s | j j| d S )N)r Zsettimer)r Ztimerr r r setTimers s z
Form.setTimerc C s$ || j |j < | jj|j | d S )N)rf filenor Zwatchfd)r fileflagsr r r watchFilev s zForm.watchFile)N) r r r r r^ rb re ri r r; rm rq r r r r r[ ; s
r[ c @ s* e Zd ZdZdd Zd ddZdd Zd S ) Griday 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
c C s | j j||S )N)gplace)r xyr r r rt s z
Grid.placer c
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r rh colrowpadding
anchorLeft anchorTop anchorRight anchorBottomgrowxgrowyZ anchorFlagsZ gridFlagsr r r setField s&
z
Grid.setFieldc G s t j| | _g | _d S )N)r gridrs r_ )r argsr r r r s z
Grid.__init__Nr r r r )r r r r r r r )r r r r rt r r r r r r rr z s
rr )ZROOTZBORDERZWINDOWZSHADOWZTITLEZBUTTONZ ACTBUTTONZCHECKBOXZ ACTCHECKBOXZENTRYZLABELZLISTBOXZ
ACTLISTBOXZTEXTBOXZ
ACTTEXTBOXZHELPLINEZROOTTEXTZ
EMPTYSCALEZ FULLSCALEZDISENTRYZ
COMPACTBUTTONZ
ACTSELLISTBOXZ
SELLISTBOXc @ s e Zd ZdZdd Zdd Zdd Zdd Zd
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Z d$ddZ
dd Z dd Z dd Z
dd Zdd Zd%dd Zd&d d Zd d! Zd"d# ZdS )' SnackScreena
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)
c C s& t j t j \| _| _| jd d S )N)r ZinitsizerA r> pushHelpLine)r r r r r s zSnackScreen.__init__c C s t j S )N)r finish)r r r r r s zSnackScreen.finishc C s t j d S )N)r resume)r r r r r s zSnackScreen.resumec C s t j d S )N)r suspend)r r r r r s zSnackScreen.suspendc C s | j | | d S )N)helpCb)r argr r r doHelpCallback s zSnackScreen.doHelpCallbackc C s || _ tj| jS )N)r r Z helpcallbackr )r cbr r r helpCallback s zSnackScreen.helpCallbackNc C s |rt j||S t j|S )N)r Zsuspendcallback)r r r r r r suspendCallback s zSnackScreen.suspendCallbackc C s t j|||||S )N)r Z
openwindow)r lefttoprA r> titler r r
openWindow s zSnackScreen.openWindowc C s |st jdS t j|S d S )Nz *default*)r Z pushhelpline)r r r r r r s
zSnackScreen.pushHelpLinec C s t j S )N)r Z pophelpline)r r r r popHelpLine s zSnackScreen.popHelpLinec C s t j|||S )N)r Z drawroottext)r r r r r r r drawRootText s zSnackScreen.drawRootTextc C s t j|||S )N)r Zcenteredwindow)r rA r> r r r r centeredWindow s zSnackScreen.centeredWindowc C s( |r|rt j|j|||S t j|j|S )N)r Zgridwrappedwindowrs )r r r ru rv r r r gridWrappedWindow s z SnackScreen.gridWrappedWindowTc C s |r t j S t j S )N)r Z popwindowZpopwindownorefresh)r refreshr r r popWindow s zSnackScreen.popWindowc C s t j S )N)r r )r r r r r s zSnackScreen.refreshc C s, |t krtjt | ||S tj|||S d S )N) colorsetsr Zsetcolor)r rO ZfgZbgr r r setColor s zSnackScreen.setColor)N)NN)T)r r r r r r r r r r r r r r r r r r r r r r r r r s"
r rF c C s t j| |||S )zR returns a tuple of the wrapped text, the actual width, and the actual height
)r rI )r rA rJ rK r r r rI s rI c @ s* e Zd ZdZdd Zd ddZdd ZdS )
RadioGroupz 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
c C s d | _ g | _d S )N)prev
buttonlist)r r r r r % s zRadioGroup.__init__Nc C s< | j r|d krd}t|| j |}|| _ | jj||f |S )Nr )r r* r r
)r r r# defaultbr r r rb ) s zRadioGroup.addc C s$ x | j D ]\}}|j r|S qW d S )N)r r$ )r r r# r r r r: 3 s zRadioGroup.getSelection)N)r r r r r rb r: r r r r r s
r c @ s e Zd ZdZdd Zdd ZdS )RadioBarz Bar of Radio buttons, based on Grid.
methods:
- RadioBar(self, screen, buttonlist) : constructor.
- getSelection(self): return value of selected button
c C s~ g | _ d| _t | _tj| dt| xR|D ]J\}}}| jj|||}| j j||f | j |d| jdd | jd | _q,W d S )Nr r )rz )
r9 r0 r r, rr r lenrb r
r )r screenr r r# r r r r r r B s zRadioBar.__init__c C s
| j j S )N)r, r: )r r r r r: M s zRadioBar.getSelectionN)r r r r r r: r r r r r 9 s r c @ s" e Zd ZdZdddZdd ZdS ) ButtonBara 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.
r c C s g | _ i | _d| _tj| t|d x|D ]}t|tjdkr@t nt
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zButtonBar.__init__c C s8 || j kr| j | S x | jD ]\}}||kr |S q W d S )N)r\ r9 )r resultr r# r r r
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r c @ sh e Zd ZdZdd ZdddZddd Zd
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dS ) GridFormHelpa= 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):
c G sJ || _ || _t|| _g | _d| _t|}| g|d d< tjt | d S )Nr )
r r r[ rj childList form_createdr9 rr r tuple)r r r helpr r r r r s
zGridFormHelp.__init__r c C s, | j ||||||||| |
| jj| d S )N)r r r
) r rd rw rx ry rz r{ r| r} r~ r r r r rb s zGridFormHelp.addNc C s | j ||}| jj |S )N)re r r )r ru rv r r r r runOnce s
zGridFormHelp.runOncec C s | j j| d S )N)rj r^ )r r] r r r r^ s zGridFormHelp.addHotKeyc C s | j j| d S )N)rj rm )r r] r r r rm s zGridFormHelp.setTimerc C sL | j sH| jdd x| jD ]}| jj| qW | jj| | j|| d| _ d S )Nr )r rt r rj rb r r r )r ru rv Zchildr r r create s zGridFormHelp.createc C s | j || | jj S )N)r rj re )r ru rv r r r re s zGridFormHelp.runc C s | j | jj S )N)r rj ri )r r r r ri s zGridFormHelp.drawc C s0 | j | jj| | j | jj }| jj |S )N)r r r r rj re r )r r r r r runPopup s
zGridFormHelp.runPopupc C s | j j| d S )N)rj r; )r rl r r r r; s zGridFormHelp.setCurrentr r r r )r r r r r r r )NN)NN)NN)r r r r r rb r r^ rm r re ri r r; r r r r r } s
r c @ s e Zd ZdZdd ZdS )GridFormzh GridForm class (extends GridFormHelp):
methods:
- GridForm(self, screen, title, *args):
c G s | ||d f| }t j| d S )N)r r )r r r r Zmyargsr r r r s zGridForm.__init__N)r r r r r r r r r r s r c @ s` e Zd ZdZdddZdddZdd Zdd
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dddZ dd Z dS ) CheckboxTreea 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):
Nr c C s | j |td f|| d S )Nr
)addItem snackArgs)r r r0 r$ r r r r
s zCheckboxTree.appendc C s4 |d kr |}| j j|||}|| j|< || j|< d S )N)r ZcheckboxtreeAddItemr. r/ )r r pathr0 r$ r+ r r r r s
zCheckboxTree.addItemc C s | j j }| j| S )N)r ZcheckboxtreeGetCurrentr. )r Zcurrr r r
getCurrent s
zCheckboxTree.getCurrentc C s2 t j||||| _i | _i | _|r.| jj| d S )N)r Z checkboxtreer r. r/ ZcheckboxtreeSetWidth)r r> r? rA Z
hide_checkboxZ unselectabler r r r s
zCheckboxTree.__init__c C s0 g }| j j }x |D ]}|j| j| qW |S )N)r ZcheckboxtreeGetSelectionr
r. )r r8 r9 r+ r r r r: s
zCheckboxTree.getSelectionc C s | j j| j| | d S )N)r ZcheckboxtreeSetEntryr/ )r r0 r r r r setEntry s zCheckboxTree.setEntryc C s | j j| j| d S )N)r ZcheckboxtreeSetCurrentr/ )r r0 r r r r; s zCheckboxTree.setCurrentr c C s | j j| j| | d S )N)r ZcheckboxtreeSetEntryValuer/ )r r0 r$ r r r
setEntryValue s zCheckboxTree.setEntryValuec C s | j j| j| S )N)r ZcheckboxtreeGetEntryValuer/ )r r0 r r r
getEntryValue s zCheckboxTree.getEntryValue)Nr )Nr )r Nr r )r )
r r r r r
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r OkCancel( c
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- ButtonChoiceWindow(screen, title, text,
buttons = [ 'Ok', 'Cancel' ],
width = 40, x = None, y = None, help = None):
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EntryWindow(screen, title, text, prompts, allowCancel = 1, width = 40,
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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
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