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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)���r )r r �r r )� r )r r �appendr c @ 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 �||� d S | j �|� d S �N)�w� setCallback)�self�obj�data� r �'/usr/lib/python3/dist-packages/snack.pyr D s zWidget.setCallbackc C s t �r )�NotImplementedError�r r r r �__init__J s zWidget.__init__r )�__name__�
__module__� __qualname__�__doc__r r r r r r r : s
r c @ � e Zd ZdZdd� ZdS )�ButtonzqBasic button class, takes button text as parameter
method:
- Button(self, text): returns a button
c C � t �|�| _d S r )�_snack�buttonr �r �textr r r r T � zButton.__init__N�r r r r r r r r r r! M � r! c @ r )�
CompactButtonz�Compact Button class (less frilly button decoration).
methods:
- CompactButton(self,text) : create button, with text.
c C r" r )r# �
compactbuttonr r% r r r r ^ r' zCompactButton.__init__Nr( r r r r r* W r) 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 � | j jS r �r �
checkboxValuer r r r �valuen � zCheckbox.valuec C s | j jdkS �Nr r. r r r r �selectedq � zCheckbox.selectedc C � | j �||�S r )r �checkboxSetFlags�r �flag�senser r r �setFlagst s zCheckbox.setFlagsc C s | j �|�S r )r �checkboxSetValue)r r0 r r r �setValuex r4 zCheckbox.setValuer c C � t �||�| _d S r )r# �checkboxr )r r& �isOnr r r r { � zCheckbox.__init__N�r ) r r r r r0 r3 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 r )r �key�
radioValuer r r r r3 � r' zSingleRadioButton.selectedr c C s. |r
t �||j|�| _d S t �|d |�| _d S r )r# � radiobuttonr )r r& �groupr? r r r r � s zSingleRadioButton.__init__NrA )r r r r r3 r r r r r rB ~ s rB 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|< d S r )r �listboxAddItem�key2item�item2key�r r& �itemrC r r r r � s
zListbox.appendc C s@ |s
| j �|d�}n
| j �|| j| �}|| j|< || j|< d S r2 )r �listboxInsertItemrJ rI )r r& rL �beforerC r r r �insert� s
zListbox.insertc C s, | j �| j| � | j| j| = | j|= d S r )r �listboxDeleteItemrJ rI �r rL r r r �delete� s zListbox.deletec C sL | j �|| j| �}| j �| j| � | j| j| = || j|< || j|< d S r )r rM rJ rP rI rK r r r �replace� s
zListbox.replacec C s | j | j�� S r )rI r �listboxGetCurrentr r r r �current� r' zListbox.currentc C �, g }| j �� }|D ]
}|�| j| � q |S r )r �listboxGetSelectionr rI �r � selection�listrC r r r � getSelection� �
zListbox.getSelectionc C � | j �| j| � d S r )r �listboxSetCurrentrJ rQ r r r �
setCurrent� � zListbox.setCurrentc C s i | _ i | _| j�� d S r )rI rJ r � listboxClearr r r r �clear� s z
Listbox.clearr c C s: t �||||||�| _i | _i | _|r| j�|� d S d S r )r# �listboxr rI rJ �listboxSetWidth)r �height�scroll�
returnExit�width�
showCursor�multiple�borderr r r r � s �zListbox.__init__N)r r r r r r )
r r r r r rO rR rS rU r[ r_ rb r r r r r rG � s rG 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 � | j �|� d S r )r � textboxTextr% r r r �setText� r' zTextbox.setTextc C rm r )r �
textboxHeight)r re r r r � setHeight� r' zTextbox.setHeightr c C s t �|||||�| _d S r )r# �textboxr )r rh re r& rf �wrapr r r r � � zTextbox.__init__Nr
)r r r r ro rq r r r r r rl � s
rl c @ s e Zd Zddd�ZdS )�TextboxReflowed� �
r c C sP t ||||�\}}}|dkr ||kr t�| |||d� d S t�| |||d� d S )Nr r r )�reflowrl r )r rh r& �flexDown�flexUp� maxHeight�newtextre r r r r � s zTextboxReflowed.__init__N)rv rw r )r r r r r r r r ru � s ru 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 rm r )r � labelTextr% r r r ro � r' z
Label.setTextc C r" r )r# �labelr r% r r r r � r' zLabel.__init__c C rm r )r �labelSetColors)r �colorsetr r r � setColors� r' zLabel.setColorsN)r r r r ro r r� r r r r r} � s
r} c @ � 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 rm r )r �scaleSet)r �amountr r r �set r' z Scale.setc C r= r )r# �scaler )r rh �totalr r r r r@ zScale.__init__N)r r r r r� r r r r r r� s r� c @ s8 e Zd ZdZdd� Zddd�Zdd� Z
dd 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 r- r )r �
entryValuer r r r r0 r1 z Entry.valuer c C r5 r )r �
entrySetValue)r r& � cursorAtEndr r r r� � z Entry.setc C r5 r )r �
entrySetFlagsr7 r r r r: " r� zEntry.setFlags� r c C s t �||||||�| _d S r )r# �entryr )r rh r& �hidden�passwordrf rg r r r r % s zEntry.__init__N�r )r� r r r r )r r r r r0 r� r: r r r r r r� s
�r� �F1�F2�F3�F4�F5�F6�F7�F8�F9�F10�F11�F12�ESC�ENTER�SUSPEND� BACKSPACE�DELETE� )�INSERT�RESIZEr� c C s g | ]}t |�|f�qS r )�ord)�.0�cr r r �
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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 �t| � d S r )r � addhotkey�hotkeys�r �keynamer r r � addHotKeyI s zForm.addHotKeyc C sr d|j v r|j�� D ]}| �|� q
d|j v r$|jD ]}| �|� qd S d|j v r7|| j|jj< | j�|j�S d S )Nr� � gridmembersr ) �__dict__r� �keysr� r� �add�transr rC )r �widgetrC r r r r r� L s
�zForm.addc C s^ | j �� \}}|tjkr| j| S |tjkrdS |tjkr"| j| S |tjkr+t | S t
d��)N�TIMERzEOF or IO error) r �runr# �FORM_EXIT_WIDGETr� �FORM_EXIT_TIMER�FORM_EXIT_FDREADY�filemap�FORM_EXIT_HOTKEYr� � RuntimeError)r �what�whichr r r r� Y s
zForm.runc C � | j �� d S r )r �drawr r r r r� e s
z Form.drawNc C s" i | _ i | _t�|�| _|| _d S r )r� r� r# �formr �helpArg)r r� r r r r i s
z
Form.__init__c C s | j �|j � d S r )r �
setcurrent�r �cor r r r_ p r@ zForm.setCurrentc C rm r )r �settimer)r �timerr r r �setTimers r' z
Form.setTimerc C s$ || j |�� < | j�|�� |� d S r )r� �filenor �watchfd)r �file�flagsr r r � watchFilev s zForm.watchFiler ) r r r r r� r� r� r� r r_ r� r� r r r r r� ; s
r� c @ s0 e Zd ZdZdd� Z d 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 r5 r )�g�place�r �x�yr r r r� � r� z
Grid.place�r r r r r c
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r0| tjB } d|j v rA| j
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r� r r# � ANCHOR_LEFT� ANCHOR_RIGHT�
ANCHOR_TOP�
ANCHOR_BOTTOM�
GRID_GROWX�
GRID_GROWYr� r� �setfieldr )
r r� �col�row�padding�
anchorLeft� anchorTop� anchorRight� anchorBottom�growx�growy� anchorFlags� gridFlagsr r r �setField� s(
�z
Grid.setFieldc G s t j|� | _g | _d S r )r# �gridr� r� )r �argsr r r r � �
z
Grid.__init__N�r� r r r r r r )r r r r r� r� r r r r r r� z s
� r� �ROOT�BORDER�WINDOW�SHADOW�TITLE�BUTTON� ACTBUTTON�CHECKBOX� ACTCHECKBOX�ENTRY�LABEL�LISTBOX�
ACTLISTBOX�TEXTBOX�
ACTTEXTBOX�HELPLINE�ROOTTEXT)�
EMPTYSCALE� FULLSCALE�DISENTRY�
COMPACTBUTTON�
ACTSELLISTBOX�
SELLISTBOXc @ s� e Zd ZdZdd� Zdd� Zdd� Zdd � Zd
d � Zd d
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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 �� t �� \| _| _| �d � d S r )r# �init�sizerh re � pushHelpLiner r r r r � s zSnackScreen.__init__c C � t �� S r )r# �finishr r r r r � r1 zSnackScreen.finishc C � t �� d S r )r# �resumer r r r r � r4 zSnackScreen.resumec C r
r )r# �suspendr r r r r � r4 zSnackScreen.suspendc C s | � | |� d S r )�helpCb)r �argr r r �doHelpCallback� r' zSnackScreen.doHelpCallbackc C s || _ t�| j�S r )r r# � helpcallbackr )r �cbr r r � helpCallback� s zSnackScreen.helpCallbackNc C s |rt �||�S t �|�S r )r# �suspendcallback)r r r r r r �suspendCallback� s
zSnackScreen.suspendCallbackc C s t �|||||�S r )r# �
openwindow)r �left�toprh re �titler r r �
openWindow� r@ zSnackScreen.openWindowc C s |st �d�S t �|�S )Nz *default*)r# � pushhelpliner% r r r r
� s
zSnackScreen.pushHelpLinec C r r )r# � pophelpliner r r r � popHelpLine� r1 zSnackScreen.popHelpLinec C � t �|||�S r )r# � drawroottext)r r r r& r r r � drawRootText� r� zSnackScreen.drawRootTextc C r r )r# �centeredwindow)r rh re r r r r �centeredWindow� r� zSnackScreen.centeredWindowc C s( |r
|r
t �|j|||�S t �|j|�S r )r# �gridwrappedwindowr� )r r� r r� r� r r r �gridWrappedWindow s z SnackScreen.gridWrappedWindowTc C s |rt �� S t �� S r )r# � popwindow�popwindownorefresh)r �refreshr r r � popWindow s zSnackScreen.popWindowc C r r )r# r) r r r r r) r1 zSnackScreen.refreshc C s( |t v r
t�t | ||�S t�|||�S r )� colorsetsr# �setcolor)r r� �fg�bgr r r �setColor s zSnackScreen.setColorr �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 rv c C s t �| |||�S )zR returns a tuple of the wrapped text, the actual width, and the actual height
)r# rx )r& rh ry rz r r r rx s rx 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 r )�prev�
buttonlistr r r r r % s
zRadioGroup.__init__Nc C s: | j s |d kr d}t|| j |�}|| _ | j�||f� |S �Nr )r2 rB r3 r )r r r0 �default�br r r r� ) s zRadioGroup.addc C s$ | j D ] \}}|�� r| S qd S r )r3 r3 )r r6 r0 r r r r[ 3 s zRadioGroup.getSelectionr )r r r r r r� r[ r r r r r1 s
r1 c @ r� )�RadioBarz� Bar of Radio buttons, based on Grid.
methods:
- RadioBar(self, screen, buttonlist) : constructor.
- getSelection(self): return value of selected button
c C sz g | _ d| _t� | _t�| dt|�� |D ]%\}}}| j�|||�}| j �||f� | j |d| jdd� | jd | _qd S )Nr r �r� )
rZ rL r1 rF r� r �lenr� r r� )r �screenr3 r r0 r5 r6 r r r r B s �zRadioBar.__init__c C �
| j �� S r )rF r[ r r r r r[ M �
zRadioBar.getSelectionN)r r r r r r[ r r r r r7 9 s r7 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| _t�| t|�d� |D ]L}t|tjdkr t nt
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isinstance�sys�version�str�
basestring�lowerr* r! r r� ) r r: r3 �compact�blistr r0 �hotkeyr6 r r r r \ s&
�zButtonBar.__init__c C s8 || j v r
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d S r )r� rZ )r �resultr$ r0 r r r �
buttonPresseds s
�zButtonBar.buttonPressedNrA )r r r r r rJ r r r r r= S s
r= c @ sn e Zd ZdZdd� Z ddd�Zdd d
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d� Zddd�Z ddd�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 r2 )
r: r r� r� � childList� form_createdrZ r� r �tuple)r r: r �helpr� r r r r � s
zGridFormHelp.__init__r� r c C s, | � ||||||||| |
�
| j�|� d S r )r� rL r ) r r� r� r� r� r� r� r� r� r� r� r r r r� � s
�zGridFormHelp.addNc C s | � ||�}| j�� |S r )r� r: r* )r r� r� rI r r r �runOnce� s
zGridFormHelp.runOncec C rm r )r� r� r� r r r r� � r' zGridFormHelp.addHotKeyc C rm r )r� r� r� r r r r� � r' zGridFormHelp.setTimerc C sL | j s$| �dd� | jD ]}| j�|� q | j�| | j||� d| _ d S d S r4 )rM r� rL r� r� r: r& r )r r� r� �childr r r �create� s
�zGridFormHelp.createc C s | � ||� | j�� S r )rR r� r� r� r r r r� � r� zGridFormHelp.runc C s | � � | j�� S r )rR r� r� r r r r r� � s
zGridFormHelp.drawc C s0 | � � | j�| | j� | j�� }| j�� |S r )rR r: r& r r� r� r* )r rI r r r �runPopup� s
zGridFormHelp.runPopupc C rm r )r� r_ r� r r r r_ � r' zGridFormHelp.setCurrentr� r0 )r r r r r r� rP r� r� rR r� r� rS r_ r r r r rK } s
�
rK c @ r )�GridFormzh GridForm class (extends GridFormHelp):
methods:
- GridForm(self, screen, title, *args):
c G s | ||d f| }t j|� d S r )rK r )r r: r r� �myargsr r r r � s zGridForm.__init__Nr( r r r r rT � r) rT c @ s` e Zd ZdZddd�Zddd�Zdd � Zdd
d �Zd d
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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):
- setCurrent(self, item):
- setEntryValue(self, item, selected = 1):
- getEntryValue(self, item):
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- 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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