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relative_yrL rN rD rD rE rF m rR �Fc C rI rX rL rN rD rD rE rF n rP �Gc C s | j |d d ddd�S )Nr r; TrY rL )rA �colrC rD rD rE rF o � �H� c C s | � |d d |d d �S )Nr; r rL )rA �x_yrC rD rD rE rF p s �Jc C � | � |d �S �Nr )�csi_erase_display�rA �moderC rD rD rE rF q � �Kc C rc rd )�csi_erase_linerf rD rD rE rF r rh �Lc C r< �Nr )�lines)� insert_linesr@ rD rD rE rF s rG �Mc C r< rl )� remove_linesr@ rD rD rE rF t rG �Pc C r< r= )� remove_charsr@ rD rD rE rF u rG �Xc C s* | � | j| jd |d d | jd f�S �Nr r; )�erase� term_cursorr@ rD rD rE rF v s
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| � |�S �N)�csi_get_device_attributes�rA �nonerC rD rD rE rF z �
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relative_xrL )rA �rowrC rD rD rE rF { r^ �e�f�gc C rc rd )�csi_clear_tabstoprf rD rD rE rF ~ rh �hc C s | � ||�S rz ��
csi_set_modes�rA �modesrC rD rD rE rF s �lc C s | j ||dd�S )NT��resetr� r� rD rD rE rF � rG �mc C s
| � |�S rz )� csi_set_attr)rA �attrsrC rD rD rE rF � r~ �nc C rc rd )�csi_status_reportrf rD rD rE rF � rh rC c C rc rd )�csi_set_keyboard_ledsrf rD rD rE rF � rh �rc C s | � |d |d �S rt )�csi_set_scroll)rA �t_brC rD rD rE rF � rR rA c C � | � � S rz )� save_cursorr| rD rD rE rF � � �uc C r� rz )�restore_cursorr| rD rD rE rF � r� �`c @ s e Zd Zdd� Zdd� ZdS )� TermModesc C s | � � d S rz r� ��selfrD rD rE �__init__� s zTermModes.__init__c C s: d| _ d| _d| _d| _d| _d| _d| _d| _t| _ d S �NFT)
� display_ctrlr! �lfnl� keys_decckm�
reverse_video�constrain_scrolling�autowrap�visible_cursor�CHARSET_DEFAULT� main_charsetr� rD rD rE r� � s
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__module__� __qualname__r� r� rD rD rD rE r� � s r� c @ sJ e Zd Zddddd�Zdd� Zdd� Zd d
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d� Zdd� Z dS )� TermCharsetN�0�U)�default�vt100�ibmpc�userc C s ddg| _ d| _| �d� d S )Nr� r� Fr )�_g� _sgr_mapping�activater� rD rD rE r� � s
�zTermCharset.__init__c C s || j |< | j| jd� dS )z1
Redefine G'g' with new mapping.
�r� N)r� r� �active)r� r� �charsetrD rD rE �define� s
zTermCharset.definec C s || _ | j�| j| d�| _dS )z2
Activate the given charset slot.
N)r� �MAPPING�getr� �current)r� r� rD rD rE r� � s zTermCharset.activatec C s
d| _ dS )zA
Set graphics rendition mapping to IBM PC CP437.
TN)r� r� rD rD rE �
set_sgr_ibmpc� s
zTermCharset.set_sgr_ibmpcc C s d| _ | j| jd� dS )zC
Reset graphics rendition mapping to IBM PC CP437.
Fr� N)r� r� r� r� rD rD rE �reset_sgr_ibmpc� s zTermCharset.reset_sgr_ibmpcc C sN | j s | j| j dkr%t�|�d��}|dkr d| _tt| �S d| _|S |S )Nr� �cp437r r� r� ) r� r� r� r �find�decoder� �strr )r� �char�dec_posrD rD rE �
apply_mapping� s zTermCharset.apply_mapping)
r� r� r� r� r� r� r� r� r� r� rD rD rD rE r� � s �
r� c sD e Zd ZdZdZdd� Z� fdd�Z� fdd�Z� fd d
�Z� Z S ) � TermScrollerzd
List subclass that handles the terminal scrollback buffer,
truncating it as necessary.
i' c C s t | �| jkr| �d� d S d S rd )�len�SCROLLBACK_LINES�popr� rD rD rE �trunc� s �zTermScroller.truncc � | � � tt| ��|� d S rz )r� �superr� �append)r� �obj�� __class__rD rE r� � � zTermScroller.appendc s | � � tt| ��||� d S rz )r� r� r� r! )r� �idxr� r� rD rE r! � s zTermScroller.insertc r� rz )r� r� r� �extend)r� �seqr� rD rE r� � r� zTermScroller.extend)
r� r� r� �__doc__r� r� r� r! r� �
__classcell__rD rD r� rE r� � s r� c @ s. e Zd ZdZdd� Zd|dd�Zdd� Zd}d
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e d�fdd�Zdd� Zdd � Zd d � Zd d � Zd�d!d"�Zd#d$� Zd%d&� Zd'd(� Zd)d*� Zd+d,� Zd-d.� Zd|d/d0�Zd~d1d2�Zd~d3d4�Z d5d6� Z d7d8� Z d�d9d:�Z d;d<� Z d�d=d>�Z!d~d?d@�Z"d~dAdB�Z#d�dDdE�Z$d~dFdG�Z%dHdI� Z&dJdK� Z'd�dMdN�Z(d�dOdP�Z)d�dQdR�Z*d�dSdT�Z+dUdV� Z,dWdX� Z-dYdZ� Z.d~d[d\�Z/d~d]d^�Z0d_d`� Z1d~dadb�Z2d�ddde�Z3d�dfdg�Z4dhdi� Z5djdk� Z6dldm� Z7dndo� Z8d�dpdq�Z9d�drds�Z:dtdu� Z;dvdw� Z< d�dxdy�Z=dzd{� Z>dS )��
TermCanvasFc C s^ t �| � ||| _| _|| _|j| _d| _t� | _ d| _
d | _ t � | _
d| jd< | �� d S )NFr )r r N�cursor)r r� �width�height�widget�
term_modesr� � has_focusr� �scrollback_buffer� scrolling_up�utf8_eat_bytesr � utf8_buffer�coordsr� )r� r� r� r� rD rD rE r� � s
zTermCanvas.__init__Nc C sn |du r | j d }|du r| j d }| �||�| _ | jr2| jjr2| j| j| k r2||| j f| _dS d| _dS )z�
Set terminal cursor to x/y and update canvas cursor. If one or both axes
are omitted, use the values of the current position.
Nr r; )rv �constrain_coordsr� r� r� r� r� r� )r� �x�yrD rD rE �set_term_cursor s
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zTermCanvas.set_term_cursorc C s d| _ | jd | _dS )z?
Reset scrolling region to full terminal size.
r r; N)�scrollregion_startr� �scrollregion_endr� rD rD rE � reset_scroll s zTermCanvas.reset_scrollTc C sx |r d| _ | �� dS |du r| jd }|s| }t| j�}| j |7 _ | j |kr.|| _ n| j dk r6d| _ | �� dS )z�
Scroll the scrolling buffer up (up=True) or down (up=False) the given
amount of lines or half the screen height.
If just 'reset' is True, set the scrollbuffer view to the current
terminal content.
r Nr` )r� r� r� r� r� )r� r r� rm � maxscrollrD rD rE �
scroll_buffer s
zTermCanvas.scroll_bufferc C sZ t � | _d| _d| _d| _t� | _d| _d| _d| _ | �
� | � � | j �
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Reset the terminal.
Fr N)r �escbuf�
within_escape�
parsestate�attrspecr� r� � saved_cursor� saved_attrs�is_rotten_cursorr� �
init_tabstopsr� r� �clearr� rD rD rE r� = s
zTermCanvas.resetc C sd t | jd�\}}|dkr|d7 }|r*t| j�|k r(| j�d� t| j�|k sd S d S dg| | _d S )N� r r; )�divmodr� r� �tabstopsr� )r� r� �tablen�modrD rD rE r� W s �zTermCanvas.init_tabstopsc C s� |rt t| j��D ]}d| j|< q d S |d u r | jd }t|d�\}}|r3| j| d|> M < d S | j| d|> O < d S �Nr r� r; )r r� r� rv r� )r� r� �remover� r �divr� rD rD rE � set_tabstopb s
zTermCanvas.set_tabstopc C s6 |d u r | j d }t|d�\}}| j| d|> @ dkS r� )rv r� r� )r� r� r� r� rD rD rE �
is_tabstopq s
zTermCanvas.is_tabstop� c C s | � |�g| j S rz )�
empty_charr� �r� r� rD rD rE �
empty_linex s zTermCanvas.empty_linec C s | j | jj|fS rz )r� r� r� r rD rD rE r { � zTermCanvas.empty_charc C s4 | j dks
| jdkr d S |D ] }| �t|�� qd S rd )r� r� �addbyter
)r� �data�byterD rD rE �addstr~ s
�zTermCanvas.addstrc C s� | j \}}|| jkr$t| j�D ]}| j| | �� g|| j 7 < qn|| jk r=t| j�D ]}| j| d|� | j|< q.|| _|| jkr�t| j|�D ]J}z| j�� }W n tyl | j� | �
� � | j d7 _ Y qKw t |�| jk r�|| �� g| jt |� 7 }n|d| j� }|d7 }| j�
d|� qKn|| jk r�t|| j�D ] }| j� | j�d�� q�|| _| �� | �||�\}}| �||� | jdd� dS )zD
Resize the terminal to the given width and height.
Nr; r T)r� )rv r� r r� �termr r� r� �
IndexErrorr� r r� r� r! r� r� r� r� )r� r� r� r� r� � last_linerD rD rE �resize� sD
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zTermCanvas.resizec C sr | j jtkrdS |td�krd}nd}|td�kr d}n|td�kr%d}n |td �kr.d
}nd }| j�||� dS ) zF
Set G0 or G1 according to 'char' and modifier 'mod'.
N�(r r; r� r� r� r� ri r� r� )r� r� r� r r� r� )r� r� r� r� �csetrD rD rE �set_g01� s zTermCanvas.set_g01c C s( | j �td��}g }| j |rdpdd� �td��D ]}zt|�}W n ty- d}Y nw |�|� qt| dur�t| d dkrKtt| d }nt| }|\}}} t|�|k re|�|� t|�|k sZt t|��D ]}
||
du sy||
dkr}|||
< qkz | | ||� W dS ty� Y dS w dS )zL
Parse ECMA-48 CSI (Control Sequence Introducer) sequences.
�?r; r N�;rx )
r� �
startswithr �split�int�
ValueErrorr� � CSI_COMMANDSr� r ) r� r� �qmarkr� �arg�num�csi_cmd�number_of_args�
default_value�cmd�irD rD rE � parse_csi� s6 $ �
�� ��zTermCanvas.parse_csic C sd |t d�kr|t d�kr| �� dS |t d�kr2|t d�kr$t| j_dS |t d�v r0t| j_dS dS |t d�ks>|t d�krF| �||� dS |t d�krT| jd d
� dS |t d �kr`| �� dS |t d �krl| �� dS |t d
�krx| � � dS |t d�kr�| �
� dS |t d�kr�| j � t
d � dS |t d�kr�| jd d� dS |t d�kr�| jd d� dS dS )z;
Parse escape sequences which are not CSI.
�#�8�%r: �G8r �)ro T��reverserV ry rW r_ �Z�[?6c�7)�
with_attrsN)r �decalnr� r� r� � CHARSET_UTF8r �linefeedr� �newliner� r� �respond�ESCr� r� )r� r� r� rD rD rE � parse_noncsi� s6 � �zTermCanvas.parse_noncsic C sP |� td��r| j�|dd� � dS |� td��r&| j�|dd� � dS dS )z1
Parse operating system command.
r r; Nz3;r` )r r r� � set_title)r� �bufrD rD rE � parse_osc s
�zTermCanvas.parse_oscc C s6 | j dkr.|t�� v r| �|� d| _ �n |td�v s$| js-|td�kr-| j|7 _d S n�| j dkrB|td�krBt� | _d| _ d S | j dkrY|td�krY| �| j�td��� n�| j dkr}| jd d � | tt d
�kr}| �| jd d � �td��� n�| j dkr�| j�
td ��r�t | j�d kr�n�| j dkr�| js�|td
�kr�nt| j dkr�| j|7 _d S | j dkr�|td�kr�t� | _d| _ d S | j dkr�|td�td�td�td�fv r�|| _d| _ d S | j dkr�| � || j� n(|td�td�td�td�td�td�td�td�td �td �f
v �r| � |� | �
� d S ) Nr; r z 0123456789;r �]r` �r� ����\rq r� �R�[r# r! r r% � ry rV rW r_ ro r( r* r" �>�=)r� r �keysr r r� r r5 �lstripr1 r r� r2 � leave_escaper rD rD rE � parse_escape sJ
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zTermCanvas.parse_escapec C s d| _ d| _t� | _d S )NFr )r� r� r r� r� rD rD rE rA L s zTermCanvas.leave_escapec C s( d}|d@ r|dK }|d7 }|d@ s|S )z�
Process startbyte and return the number of bytes following it to get a
valid UTF-8 multibyte sequence.
bytenum -- an integer ordinal
r �@ r; rD )r� �bytenum�lengthrD rD rE � get_utf8_lenQ s �zTermCanvas.get_utf8_lenc C s� | j jtks tjdkrj|dkr | �|�| _t|�| _dS d| kr&dk rbn n:| jdurb| jdkrD| jd8 _| jt|�7 _dS d| _| jt|� � dd�}t
|�dkrZdS |� tjd �}n d| _t|�}nt|�}| � |� dS )
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Parse main charset and add the processed byte(s) to the terminal state
machine.
byte -- an integer ordinal
�utf8� N� r; �utf-8�ignorer �replace)
r� r� r- r �_target_encodingrF r� r r� r� r� �encode� process_char)r� r �sequencer� rD rD rE r ` s(
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zTermCanvas.addbytec C s� | j \}}t|t�rt|�}| jj}|td�kr"| jdkr"d| _dS |s0|td�kr0| � � dS |s@|td�kr@| j
� d� dS |sP|td�krP| j
� d� dS |sh|td �v rh| � � | jj
rf| � � dS dS |sv|td
�krv| �� dS |s�|td �kr�|dkr�| �|d |� dS dS |s�|td �kr�| jdkr�| j�� dS |s�|td
�v r�| �� dS |s�|td�v r�dS | jr�| �|� dS |s�|td�kr�d| _t� | _d| _dS | �|� dS )ze
Process a single character (single- and multi-byte).
char -- a byte string
�r` T�
�r �r; z
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isinstancer �chrr� r� r r� r� �carriage_returnr� r� r. r� r r� r� �beeprA rB r r� � push_cursor)r� r� r� r� �dcrD rD rE rO � sH
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zTermCanvas.process_charc C sR |du r | j d }|du r| j d }| �||�\}}| j| jj|f| j| |< dS )z~
Set character of either the current cursor position
or a position given by 'x' and/or 'y' to 'char'.
Nr r; )rv r� r� r� r� r
�r� r� r� r� rD rD rE �set_char� s
zTermCanvas.set_charc C s� || j kr | j d }n|dk rd}| jjr/|s/|| jkr#| j}||fS || jk r+| j}||fS || jkr=| jd }||fS |dk rCd}||fS )z�
Checks if x/y are within the terminal and returns the corrected version.
If 'ignore_scrolling' is set, constrain within the full size of the
screen and not within scrolling region.
r; r )r� r� r� r� r� r� )r� r� r� �ignore_scrollingrD rD rE r� � s"
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�zTermCanvas.constrain_coordsc C s� | j \}}|r&|d kr| jk rn nn0|| jkr!| jdd� n$|d8 }n || jd kr4| jkr7n nn|| jkrA| �� n|d7 }| �||� dS )zw
Move the cursor down (or up if reverse is True) one line but don't reset
horizontal position.
r Tr& r; N)rv r� �scrollr� r� r� )r� r' r� r� rD rD rE r. � s
zTermCanvas.linefeedc C s | � d| jd � d S rt )r� rv r� rD rD rE rZ � s zTermCanvas.carriage_returnc C s | � � | �� dS )z?
Do a carriage return followed by a line feed.
N)rZ r. r� rD rD rE r/ � s zTermCanvas.newlinec C sT |rd }}|r| j d | }|r| j d | }n | jjr"|| j7 }| �||� dS )z�
Move cursor to position x/y while constraining terminal sizes.
If 'relative' is True, x/y is relative to the current cursor
position. 'relative_x' and 'relative_y' is the same but just with
the corresponding axis.
Tr r; N)rv r� r� r� r� )r� r� r� r� rZ rK rD rD rE rM � s
zTermCanvas.move_cursorc C sD |dur| j �|�}| jjr| j|d� n| �|� | �||� dS )zS
Push one character to current position and advance cursor to x/y.
N)r� )r� r� r� r! r? r_ r� r^ rD rD rE � push_char s
zTermCanvas.push_charc C s� | j \}}| jjrM|d | jkr | js d| _| �|||� dS |d7 }|| jkrA| jrA|| jkr5| �� n|d7 }d}| �d|� | �|||� d| _dS |d | jk rX|d7 }d| _| �|||� dS )z�
Move cursor one character forward wrapping lines as needed.
If 'char' is given, put the character into the former position.
r; Tr FN) rv r� r� r� r� rb r� ra r� r^ rD rD rE r\ s$
zTermCanvas.push_cursorc C s2 t | j�| _|rt�| j�t�| j�f| _d S d S rz )�tuplerv r� �copyr� r� r� )r� r+ rD rD rE r� A s
��zTermCanvas.save_cursorc C sd | j d u rd S | j \}}| �||� |r.| jd ur0t�| jd �t�| jd �| _| _d S d S d S rt )r� r� r� rd r� r� )r� r+ r� r� rD rD rE r� G s
��zTermCanvas.restore_cursorr� c C s^ | j \}}|| jd k r$| �td�� |d7 }| �|�r n|| jd k s d| _| �||� dS )zg
Moves cursor to the next 'tabstop' filling everything in between
with spaces.
r; r FN)rv r� r_ r r r� r� )r� �tabstopr� r� rD rD rE r R s
�zTermCanvas.tabc C s\ |r| j �| j� | j �| j| �� � dS | j �| j�}| j�|� | j �| j| �� � dS )z�
Append a new line at the bottom and put the topmost line into the
scrollback buffer.
If reverse is True, do exactly the opposite, but don't save into
scrollback buffer.
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r� r� r! r� r r� r� )r� r' �killedrD rD rE ra c s zTermCanvas.scrollc C s$ t | j�D ]
}| �d�| j|< qdS )zB
DEC screen alignment test: Fill screen with E's.
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�r� r� rD rD rE r, s s �zTermCanvas.decalnc C s | � � | j|< dS )zZ
Blank a single line at the specified row, without modifying other lines.
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rg rD rD rE �
blank_linez s zTermCanvas.blank_liner; c C s� |du r| j }|dkr
d}|du r| �� }n| j| jj|f}|\}}|dkr@| j| �||� | j| �� |d8 }|dks&dS dS )z�
Insert 'chars' number of either empty characters - or those specified by
'char' - before 'position' (or the current position if not specified)
pushing subsequent characters of the line to the right without wrapping.
Nr r; )rv r r� r� r� r
r! r� )r� �positionr> r� r� r� rD rD rE r? � s
�zTermCanvas.insert_charsc C sf |du r| j }|dkr
d}|\}}|dkr1| j| �|� | j| �| �� � |d8 }|dksdS dS )z�
Remove 'chars' number of empty characters from 'position' (or the current
position if not specified) pulling subsequent characters of the line to
the left without joining any subsequent lines.
Nr r; )rv r
r� r� r )r� ri r> r� r� rD rD rE rr � s �zTermCanvas.remove_charsc C sf |du r
| j d }n| j}|dkrd}|dkr1| j�|| �� � | j�| j� |d8 }|dksdS dS )z�
Insert 'lines' of empty lines after the specified row, pushing all
subsequent lines to the bottom. If no 'row' is specified, the current
row is used.
Nr; r )rv r� r
r! r r� r� �r� r� rm rD rD rE rn � s �zTermCanvas.insert_linesc C sf |du r
| j d }n| j}|dkrd}|dkr1| j�|� | j�| j| �� � |d8 }|dksdS dS )z�
Remove 'lines' number of lines at the specified row, pulling all
subsequent lines to the top. If no 'row' is specified, the current row
is used.
Nr; r )rv r� r
r� r! r� r rj rD rD rE rp � s �zTermCanvas.remove_linesc C s� | j |� \}}| j |� \}}||kr't||d �D ] }| �� | j| |< qdS |}||krj||krDt|| j�D ] }| �� | j| |< q7n ||kr[t|d �D ] }| �� | j| |< qNn| �|� |d7 }||ks-dS dS )aB
Erase a region of the terminal. The 'start' tuple (x, y) defines the
starting position of the erase, while end (x, y) the last position.
For example if the terminal size is 4x3, start=(1, 1) and end=(1, 2)
would erase the following region:
....
.XXX
XX..
r; N)r� r r r
r� rh ) r� �startr# �sx�sy�ex�eyr� r� rD rD rE ru � s& ��
�zTermCanvas.erasec C s� |D ]�}d| krdkrn n|d }qd| kr dkr&n n|d }q|dkr2|� d� d}q|dkr>|�d� d}q|d krEd}q|d
krS| j�� d | j_q|d v ra| j�� d
| j_q|dkrk|� d� q|dkru|� d� q|dkr|� d� q|dkr�|� d� q|dkr�|�d� q|dkr�|�d� q|dkr�|�d� q|dkr�d }}|�� qd|v r�|dur�|d7 }dd� }||�}||�}t|�dkr�d � |gt
|� �}|d kr�|d kr�dS t ||�S ) z�
Parse SGI sequence and return an AttrSpec representing the sequence
including all earlier sequences specified as 'fg', 'bg' and
'attributes'.
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F)� � Tr; �bold� � �blink� �standout� � r r r� c S s | d u rdS t | S )Nr� )r )�colorrD rD rE �
_defaulter* s z.TermCanvas.sgi_to_attrspec.<locals>._defaulter�,r� ) �add�discardr� r� r� r� r� r� r� �join�listr
)r� r� �fg�bg�
attributes�attrr� rD rD rE �sgi_to_attrspec� s^
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zTermCanvas.sgi_to_attrspecc C s� |d dkr d| _ t� }| j du rd }}n;d| j jv r d}n | j j}|dkr+|d8 }d| j jv r4d}n | j j}|dkr@|d8 }dD ]}t| j |�sKqB|�|� qB| �||||�}| j j
re| � |�| _ dS || _ dS )z)
Set graphics rendition.
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background�background_number�getattrr� r� r� r� �reverse_attrspec)r� r� r� r� r� r� r� rD rD rE r� ; s*
zTermCanvas.csi_set_attrc C st |du r t dd�}dd� |j�d�D �}d|v r'|r'|�d� d�|�|_|S d|vr8|s8|�d� d�|�|_|S )zd
Put standout mode to the 'attrspec' given and remove it if 'undo' is
True.
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<listcomp>g rR z/TermCanvas.reverse_attrspec.<locals>.<listcomp>r� r� )r
r� r r� r� r� )r� r� �undor� rD rD rE r� ` s
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zTermCanvas.reverse_attrspecc C s` t | j�D ](}t | j�D ] }| j| | }| j|d |d�}|f|dd� | j| |< q qdS )zP
Reverse video/scanmode (DECSCNM) by swapping fg and bg colors.
r �r� r; N)r r� r� r
r� )r� r� r� r� r� r� rD rD rE r� p s ��zTermCanvas.reverse_videoc C s� |rW|dkr || j _d S |dkr| �� d S |dkr-| j j|kr'| j| d� || j _d S |dkr=|| j _| �dd� d S |dkrG|| j _d S |dkrU|| j _| �� d S d S |dkra|| j _d S |d krk|| j _ d S |d
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d S d S ) zC
Helper method for csi_set_modes: set single mode.
r; r< r} r� � r r r� r| � N) r� r� r� r� r� r� r� r� r� r! r� )r� rg �flagr r� rD rD rE �set_modez s2 � �zTermCanvas.set_modec C s$ | }|D ]
}| � ||||� qdS )zX
Set (DECSET/ECMA-48) or reset modes (DECRST/ECMA-48) if reset is True.
N)r� )r� r� r r� r� rg rD rD rE r� � s �zTermCanvas.csi_set_modesr c C s~ |dkrd}|dkr
| j }|| k r| j kr=n dS | jd|d dd�d | _| jd|d dd�d | _| �dd� dS dS )z�
Set scrolling region, 'top' is the line number of first line in the
scrolling region. 'bottom' is the line number of bottom line. If both
are set to 0, the whole screen will be used (default).
r r; T)r` N)r� r� r� r� r� )r� �top�bottomrD rD rE r� � s"
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���zTermCanvas.csi_set_scrollc C s4 |dkr | j dd� dS |dkr| j dd� dS dS )zc
Clear tabstop at current position or if 'mode' is 3, delete all
tabstops.
r T)r� r< )r� N)r� �r� rg rD rD rE r� � s
�z TermCanvas.csi_clear_tabstopc C s |s | j �td � dS dS )zz
Report device attributes (what are you?). In our case, we'll report
ourself as a VT102 terminal.
r) N)r� r0 r1 )r� r rD rD rE r{ � s �z$TermCanvas.csi_get_device_attributesc C sV |dkr| j �td � dS |dkr)| j\}}| j �td|d |d f � dS dS )z�
Report various information about the terminal status.
Information is queried by 'mode', where possible values are:
5 -> device status report
6 -> cursor position report
r} z[0nr� z[%d;%dRr; N)r� r0 r1 rv �r� rg r� r� rD rD rE r� � s
$�z TermCanvas.csi_status_reportc C sh | j \}}|dkr| �| j | jd |f� dS |dkr'| �d|f||f� dS |dkr2| �|� dS dS )z�
Erase current line, modes are:
0 -> erase from cursor to end of line.
1 -> erase from start of line to cursor.
2 -> erase whole line.
r r; r` N)rv ru r� rh r� rD rD rE rj � s
�zTermCanvas.csi_erase_linec C sp |dkr| � | j| jd | jd f� |dkr)| � d| jd d | jd f� dS |dkr6| j| jd� dS dS )z�
Erase display, modes are:
0 -> erase from cursor to end of display.
1 -> erase from start to cursor.
2 -> erase the whole display.
r r; �r r r` )r� N)ru rv r� r� r� r� rD rD rE re � s $�z TermCanvas.csi_erase_displayc C s. ddddd�}||v r| j �|| � dS dS )a0
Set keyboard LEDs, modes are:
0 -> clear all LEDs
1 -> set scroll lock LED
2 -> set num lock LED
3 -> set caps lock LED
This currently just emits a signal, so it can be processed by another
widget or the main application.
r� � scroll_lock�num_lock� caps_lock)r r; r` r< N)r� �leds)r� rg �statesrD rD rE r� � s ��z TermCanvas.csi_set_keyboard_ledsc s@ � fdd�t � j�D �� _|du r� �dd� dS � j|� dS )z�
Clears the whole terminal screen and resets the cursor position
to (0, 0) or to the coordinates given by 'cursor'.
c s g | ]}� � � �qS rD )r )r� r� r� rD rE r� rR z$TermCanvas.clear.<locals>.<listcomp>Nr )r r� r
r� )r� r� rD r� rE r� s zTermCanvas.clearc C � | j S rz )r� r� rD rD rE rU � zTermCanvas.colsc C r� rz )r� r� rD rD rE rO r� zTermCanvas.rowsc c sX � | j dkr| jD ]}|V q d S | j| j }|| j| j | j � D ]}|V q$d S rd )r� r
r� r� )r� � trim_left�
trim_rightrU rO �attr_map�liner4 rD rD rE �content s �
� �zTermCanvas.contentc C s" || u r
| � � g| �� S | �� S rz )rU rO r� )r� �otherrD rD rE �
content_delta( s zTermCanvas.content_delta)NN)TFN�F)NFFrz )FFF)r� )Nr; N)Nr; r� )r )r r NNN)?r� r� r� � cacheabler� r� r� r� r� r� r� r r r r r r
r r r2 r5 rB rA rF r rO r_ r� r. rZ r/ rM rb r\ r� r� r ra r, rh r? rr rn rp ru r� r� r� r� r� r� r� r� r{ r� rj re r� r� rU rO r� r� rD rD rD rE r� � s�
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dd� Zdd� Zdd� Zdd� Zdd� Zdd � Zd,d d �Zd d!� Zd"d#� Zd-d%d&�Zd'd(� Zd)d*� ZdS ).�TerminalT)�closedr[ r� �titleNrJ c C s� t �| � |pd| _t|ptj�| _|p| j�dd�g| _|| _ d| _
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A terminal emulator within a widget.
``command`` is the command to execute inside the terminal, provided as a
list of the command followed by its arguments. If 'command' is None,
the command is the current user's shell. You can also provide a callable
instead of a command, which will be executed in the subprocess.
``env`` can be used to pass custom environment variables. If omitted,
os.environ is used.
``main_loop`` should be provided, because the canvas state machine needs
to act on input from the PTY master device. This object must have
watch_file and remove_watch_file methods.
``escape_sequence`` is the urwid key symbol which should be used to break
out of the terminal widget. If it's not specified, ``ctrl a`` is used.
``encoding`` specifies the encoding that is being used when local
keypresses in Unicode are encoded into raw bytes. UTF-8 is used by default.
Set this to the encoding of your terminal if you need to transmit
characters to the spawned process in non-UTF8 encoding.
Applies to Python 3.x only.
.. note::
If you notice your Terminal instance is not printing unicode glyphs
correctly, make sure the global encoding for urwid is set to
``utf8`` with ``urwid.set_encoding("utf8")``. See
:ref:`text-encodings` for more details.
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