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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_import�print_function�unicode_literalsN)�
FLAG_DISABLED� FLAGS_SET� FLAGS_RESET� FLAGS_TOGGLE�FD_READ�FD_WRITE� FD_EXCEPT� �appendc @ s" e Zd ZdZddd�Zdd� ZdS )�Widgetz�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.
Nc C s$ |r| j j||� n | j j|� d S )N)�w� setCallback)�self�obj�data� 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)�_snack�buttonr )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 )�
CompactButtonz�Compact 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 �flag�senser 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� Zddd�ZdS ) �SingleRadioButtonz�Single 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 ddd�Z 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 ZlistboxAddItem�key2item�item2key)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 � selection�listr+ 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 �height�scroll�
returnExit�widthZ
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
dd�Zd 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 Zddd�ZdS ) �TextboxReflowed� �
r c C sN t ||||�\}}}|dkr8||kr8tj| |||d� ntj| |||d� d S )Nr r ���)�reflowrB r )r rA r �flexDown�flexUp� 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 ) �Labelz�A 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 )�Scalez�A 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� Zddd�Zdd� 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 |�|f�qS r )�ord)�.0�cr r r �
<listcomp>7 s rZ c @ sR e Zd ZdZdd� Zdd� Zdd� Zdd � Zdd d �Zd
d� Z dd� Z
dd� Z d
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 addhotkey�hotkeys)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|j�S d S )Nr\ � gridmembersr ) �__dict__r\ �keysr^ r_ �add�transr r+ )r �widgetr+ r r r r rb L s
zForm.addc C sb | j j� \}}|tjkr"| j| S |tjkr0dS |tjkrD| j| S |tjkrVt | S t
d��d S )NZTIMERzEOF or IO error) r �runr ZFORM_EXIT_WIDGETrc ZFORM_EXIT_TIMERZFORM_EXIT_FDREADY�filemapZFORM_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 �file�flagsr 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 dd�Zdd� 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)�g�place)r �x�yr r r rt � s z
Grid.placer c
C s� | j j|� d} |r tj} n
|r&tj} |r6| tjB } n|rD| tjB } d} | rRtj} |
r`| tjB } d|j kr�| j
j |||j
|| | �S | j
j |||j || �S d S )Nr rs )
r_ r
r Z ANCHOR_LEFTZ ANCHOR_RIGHTZ
ANCHOR_TOPZ
ANCHOR_BOTTOMZ
GRID_GROWXZ
GRID_GROWYr` rs Zsetfieldr )
r rh �col�row�padding�
anchorLeft� anchorTop� anchorRight� anchorBottom�growx�growyZ 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__N�r 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
d � Zd d
� Z d$dd�Z
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 Zinit�sizerA 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| j�S )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 �left�toprA r> �titler r r �
openWindow� s zSnackScreen.openWindowc C s |st jd�S 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 dd�Zdd� 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# �default�br 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 ZdZddd�Zdd� 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
�rT|}|j � }n*t|�dkrj|\}}n|\}}}|| j|< |r�t |�}nt
|�}| j j||f� | j|| jdd� | jd | _q*W d S )Nr r �3� )r r r r )r9 r\ r0 rr r r� �
isinstance�sys�version�str�
basestring�lowerr r r
r� ) r r� r� ZcompactZblistr� r# Zhotkeyr� r r r r \ s$
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 �
buttonPresseds s
zButtonBar.buttonPressedN)r )r r r r r r� r r r r r� S s
r� c @ sh e Zd ZdZdd� Zddd�Zddd �Zd
d � Zd d
� Zddd�Z d dd�Z
dd� Z dd� Z dd� Z
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.setCurrent�r 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 ZdZddd�Zddd�Zdd � Zdd
d �Zd d
� Zdd� Z dd� Z
ddd�Z 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):
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