TextBuffer#

class TextBuffer(**properties: Any)#

Superclasses: Object

Stores text and attributes for display in a GtkTextView.

You may wish to begin by reading the text widget conceptual overview, which gives an overview of all the objects and data types related to the text widget and how they work together.

GtkTextBuffer can support undoing changes to the buffer content, see set_enable_undo.

Constructors#

class TextBuffer

classmethod new(table: TextTagTable | None = None) → TextBuffer#

Creates a new text buffer.

Parameters:: table – a tag table, or None to create a new one

Methods#

class TextBuffer

add_commit_notify(flags: TextBufferNotifyFlags, commit_notify: Callable[[...], None], *user_data: Any) → int#

Adds a Gtk.TextBufferCommitNotify to be called when a change is to be made to the TextBuffer.

Functions are explicitly forbidden from making changes to the TextBuffer from this callback. It is intended for tracking changes to the buffer only.

It may be advantageous to use Gtk.TextBufferCommitNotify over connecting to the insert_text or delete_range signals to avoid ordering issues with other signal handlers which may further modify the TextBuffer.

Added in version 4.16.

Parameters:

flags – which notifications should be dispatched to callback
commit_notify – a Gtk.TextBufferCommitNotify to call for commit notifications
user_data – closure data for commit_notify

add_mark(mark: TextMark, where: TextIter) → None#

Adds the mark at position where.

The mark must not be added to another buffer, and if its name is not None then there must not be another mark in the buffer with the same name.

Emits the mark_set signal as notification of the mark’s initial placement.

Parameters:

mark – the mark to add
where – location to place mark

add_selection_clipboard(clipboard: Clipboard) → None#

Adds clipboard to the list of clipboards in which the selection contents of buffer are available.

In most cases, clipboard will be the GdkClipboard returned by get_primary_clipboard for a view of buffer.

Parameters:: clipboard – a GdkClipboard

apply_tag(tag: TextTag, start: TextIter, end: TextIter) → None#

Emits the “apply-tag” signal on buffer.

The default handler for the signal applies tag to the given range. start and end do not have to be in order.

Parameters:

tag – a GtkTextTag
start – one bound of range to be tagged
end – other bound of range to be tagged

apply_tag_by_name(name: str, start: TextIter, end: TextIter) → None#

Emits the “apply-tag” signal on buffer.

Calls lookup on the buffer’s tag table to get a GtkTextTag, then calls apply_tag.

Parameters:

name – name of a named GtkTextTag
start – one bound of range to be tagged
end – other bound of range to be tagged

backspace(iter: TextIter, interactive: bool, default_editable: bool) → bool#

Performs the appropriate action as if the user hit the delete key with the cursor at the position specified by iter.

In the normal case a single character will be deleted, but when combining accents are involved, more than one character can be deleted, and when precomposed character and accent combinations are involved, less than one character will be deleted.

Because the buffer is modified, all outstanding iterators become invalid after calling this function; however, the iter will be re-initialized to point to the location where text was deleted.

Parameters:

iter – a position in buffer
interactive – whether the deletion is caused by user interaction
default_editable – whether the buffer is editable by default

begin_irreversible_action() → None#

Denotes the beginning of an action that may not be undone.

This will cause any previous operations in the undo/redo queue to be cleared.

This should be paired with a call to end_irreversible_action after the irreversible action has completed.

You may nest calls to begin_irreversible_action() and end_irreversible_action() pairs.

begin_user_action() → None#

Called to indicate that the buffer operations between here and a call to end_user_action() are part of a single user-visible operation.

The operations between begin_user_action() and end_user_action() can then be grouped when creating an undo stack. GtkTextBuffer maintains a count of calls to begin_user_action() that have not been closed with a call to end_user_action(), and emits the “begin-user-action” and “end-user-action” signals only for the outermost pair of calls. This allows you to build user actions from other user actions.

The “interactive” buffer mutation functions, such as insert_interactive, automatically call begin/end user action around the buffer operations they perform, so there’s no need to add extra calls if you user action consists solely of a single call to one of those functions.

create_child_anchor(iter: TextIter) → TextChildAnchor#

Creates and inserts a child anchor.

This is a convenience function which simply creates a child anchor with new and inserts it into the buffer with insert_child_anchor.

The new anchor is owned by the buffer; no reference count is returned to the caller of this function.

Parameters:: iter – location in the buffer

create_mark(mark_name, where, left_gravity=False)#

Creates a mark at position where.

If mark_name is None, the mark is anonymous; otherwise, the mark can be retrieved by name using get_mark. If a mark has left gravity, and text is inserted at the mark’s current location, the mark will be moved to the left of the newly-inserted text. If the mark has right gravity (left_gravity = False), the mark will end up on the right of newly-inserted text. The standard left-to-right cursor is a mark with right gravity (when you type, the cursor stays on the right side of the text you’re typing).

The caller of this function does not own a reference to the returned GtkTextMark, so you can ignore the return value if you like. Marks are owned by the buffer and go away when the buffer does.

Emits the mark_set signal as notification of the mark’s initial placement.

Parameters:

mark_name – name for mark
where – location to place mark
left_gravity – whether the mark has left gravity

create_tag(tag_name=None, **properties)#

Creates a tag and adds it to the tag table of the TextBuffer.

Parameters:

tag_name (str) – Name of the new tag, or None
**properties –
Keyword list of properties and their values

This is equivalent to creating a Gtk.TextTag and then adding the tag to the buffer’s tag table. The returned tag is owned by the buffer’s tag table.

If tag_name is None, the tag is anonymous.

If tag_name is not None, a tag called tag_name must not already exist in the tag table for this buffer.

Properties are passed as a keyword list of names and values (e.g. foreground=’DodgerBlue’, weight=Pango.Weight.BOLD)

Returns:: A new tag.

cut_clipboard(clipboard: Clipboard, default_editable: bool) → None#

Copies the currently-selected text to a clipboard, then deletes said text if it’s editable.

Parameters:

clipboard – the GdkClipboard object to cut to
default_editable – default editability of the buffer

delete(start: TextIter, end: TextIter) → None#

Deletes text between start and end.

The order of start and end is not actually relevant; delete() will reorder them.

This function actually emits the “delete-range” signal, and the default handler of that signal deletes the text. Because the buffer is modified, all outstanding iterators become invalid after calling this function; however, the start and end will be re-initialized to point to the location where text was deleted.

Parameters:

start – a position in buffer
end – another position in buffer

delete_interactive(start_iter: TextIter, end_iter: TextIter, default_editable: bool) → bool#

Deletes all editable text in the given range.

Calls delete for each editable sub-range of [start,``end``). start and end are revalidated to point to the location of the last deleted range, or left untouched if no text was deleted.

Parameters:

start_iter – start of range to delete
end_iter – end of range
default_editable – whether the buffer is editable by default

delete_mark(mark: TextMark) → None#

Deletes mark, so that it’s no longer located anywhere in the buffer.

Removes the reference the buffer holds to the mark, so if you haven’t called ref() on the mark, it will be freed. Even if the mark isn’t freed, most operations on mark become invalid, until it gets added to a buffer again with add_mark. Use get_deleted to find out if a mark has been removed from its buffer.

The mark_deleted signal will be emitted as notification after the mark is deleted.

Parameters:: mark – a GtkTextMark in buffer

delete_mark_by_name(name: str) → None#

Deletes the mark named name; the mark must exist.

See delete_mark for details.

Parameters:: name – name of a mark in buffer

delete_selection(interactive: bool, default_editable: bool) → bool#

Deletes the range between the “insert” and “selection_bound” marks, that is, the currently-selected text.

If interactive is True, the editability of the selection will be considered (users can’t delete uneditable text).

Parameters:

interactive – whether the deletion is caused by user interaction
default_editable – whether the buffer is editable by default

end_irreversible_action() → None#

Denotes the end of an action that may not be undone.

This will cause any previous operations in the undo/redo queue to be cleared.

This should be called after completing modifications to the text buffer after begin_irreversible_action was called.

You may nest calls to begin_irreversible_action() and end_irreversible_action() pairs.

end_user_action() → None#

Ends a user-visible operation.

Should be paired with a call to begin_user_action. See that function for a full explanation.

get_bounds() → tuple[TextIter, TextIter]#: Retrieves the first and last iterators in the buffer, i.e. the entire buffer lies within the range [start,``end``).

get_can_redo() → bool#: Gets whether there is a redoable action in the history.

get_can_undo() → bool#: Gets whether there is an undoable action in the history.

get_char_count() → int#

Gets the number of characters in the buffer.

Note that characters and bytes are not the same, you can’t e.g. expect the contents of the buffer in string form to be this many bytes long.

The character count is cached, so this function is very fast.

get_enable_undo() → bool#

Gets whether the buffer is saving modifications to the buffer to allow for undo and redo actions.

See begin_irreversible_action and end_irreversible_action to create changes to the buffer that cannot be undone.

get_end_iter() → TextIter#

Initializes iter with the “end iterator,” one past the last valid character in the text buffer.

If dereferenced with get_char, the end iterator has a character value of 0. The entire buffer lies in the range from the first position in the buffer (call get_start_iter to get character position 0) to the end iterator.

get_has_selection() → bool#: Indicates whether the buffer has some text currently selected.

get_insert() → TextMark#

Returns the mark that represents the cursor (insertion point).

Equivalent to calling get_mark to get the mark named “insert”, but very slightly more efficient, and involves less typing.

get_iter_at_child_anchor(anchor: TextChildAnchor) → TextIter#

Obtains the location of anchor within buffer.

Parameters:: anchor – a child anchor that appears in buffer

get_iter_at_line(line_number: int) → tuple[bool, TextIter]#

Initializes iter to the start of the given line.

If line_number is greater than or equal to the number of lines in the buffer, the end iterator is returned.

Parameters:: line_number – line number counting from 0

get_iter_at_line_index(line_number: int, byte_index: int) → tuple[bool, TextIter]#

Obtains an iterator pointing to byte_index within the given line.

byte_index must be the start of a UTF-8 character. Note bytes, not characters; UTF-8 may encode one character as multiple bytes.

If line_number is greater than or equal to the number of lines in the buffer, the end iterator is returned. And if byte_index is off the end of the line, the iterator at the end of the line is returned.

Parameters:

line_number – line number counting from 0
byte_index – byte index from start of line

get_iter_at_line_offset(line_number: int, char_offset: int) → tuple[bool, TextIter]#

Obtains an iterator pointing to char_offset within the given line.

Note characters, not bytes; UTF-8 may encode one character as multiple bytes.

If line_number is greater than or equal to the number of lines in the buffer, the end iterator is returned. And if char_offset is off the end of the line, the iterator at the end of the line is returned.

Parameters:

line_number – line number counting from 0
char_offset – char offset from start of line

get_iter_at_mark(mark: TextMark) → TextIter#

Initializes iter with the current position of mark.

Parameters:: mark – a GtkTextMark in buffer

get_iter_at_offset(char_offset: int) → TextIter#

Initializes iter to a position char_offset chars from the start of the entire buffer.

If char_offset is -1 or greater than the number of characters in the buffer, iter is initialized to the end iterator, the iterator one past the last valid character in the buffer.

Parameters:: char_offset – char offset from start of buffer, counting from 0, or -1

get_line_count() → int#

Obtains the number of lines in the buffer.

This value is cached, so the function is very fast.

get_mark(name: str) → TextMark | None#

Returns the mark named name in buffer buffer, or None if no such mark exists in the buffer.

Parameters:: name – a mark name

get_max_undo_levels() → int#

Gets the maximum number of undo levels to perform.

If 0, unlimited undo actions may be performed. Note that this may have a memory usage impact as it requires storing an additional copy of the inserted or removed text within the text buffer.

get_modified() → bool#

Indicates whether the buffer has been modified since the last call to set_modified set the modification flag to False.

Used for example to enable a “save” function in a text editor.

get_selection_bound() → TextMark#

Returns the mark that represents the selection bound.

Equivalent to calling get_mark to get the mark named “selection_bound”, but very slightly more efficient, and involves less typing.

The currently-selected text in buffer is the region between the “selection_bound” and “insert” marks. If “selection_bound” and “insert” are in the same place, then there is no current selection. get_selection_bounds is another convenient function for handling the selection, if you just want to know whether there’s a selection and what its bounds are.

get_selection_bounds() → tuple[bool, TextIter, TextIter]#

Returns True if some text is selected; places the bounds of the selection in start and end.

If the selection has length 0, then start and end are filled in with the same value. start and end will be in ascending order. If start and end are None, then they are not filled in, but the return value still indicates whether text is selected.

get_selection_content() → ContentProvider#

Get a content provider for this buffer.

It can be used to make the content of buffer available in a GdkClipboard, see set_content.

get_slice(start: TextIter, end: TextIter, include_hidden_chars: bool) → str#

Returns the text in the range [start,``end``).

Excludes undisplayed text (text marked with tags that set the invisibility attribute) if include_hidden_chars is False. The returned string includes a 0xFFFC character whenever the buffer contains embedded images, so byte and character indexes into the returned string do correspond to byte and character indexes into the buffer. Contrast with get_text. Note that 0xFFFC can occur in normal text as well, so it is not a reliable indicator that a paintable or widget is in the buffer.

Parameters:

start – start of a range
end – end of a range
include_hidden_chars – whether to include invisible text

get_start_iter() → TextIter#

Initialized iter with the first position in the text buffer.

This is the same as using get_iter_at_offset to get the iter at character offset 0.

get_tag_table() → TextTagTable#: Get the GtkTextTagTable associated with this buffer.

get_text(start: TextIter, end: TextIter, include_hidden_chars: bool) → str#

Returns the text in the range [start,``end``).

Excludes undisplayed text (text marked with tags that set the invisibility attribute) if include_hidden_chars is False. Does not include characters representing embedded images, so byte and character indexes into the returned string do not correspond to byte and character indexes into the buffer. Contrast with get_slice.

Parameters:

start – start of a range
end – end of a range
include_hidden_chars – whether to include invisible text

insert(iter, text, length=-1)#

Inserts len bytes of text at position iter.

If len is -1, text must be nul-terminated and will be inserted in its entirety. Emits the “insert-text” signal; insertion actually occurs in the default handler for the signal. iter is invalidated when insertion occurs (because the buffer contents change), but the default signal handler revalidates it to point to the end of the inserted text.

Parameters:

iter – a position in the buffer
text – text in UTF-8 format
length

insert_at_cursor(text, length=-1)#

Inserts text in buffer.

Simply calls insert, using the current cursor position as the insertion point.

Parameters:

text – text in UTF-8 format
length

insert_child_anchor(iter: TextIter, anchor: TextChildAnchor) → None#

Inserts a child widget anchor into the text buffer at iter.

The anchor will be counted as one character in character counts, and when obtaining the buffer contents as a string, will be represented by the Unicode “object replacement character” 0xFFFC. Note that the “slice” variants for obtaining portions of the buffer as a string include this character for child anchors, but the “text” variants do not. E.g. see get_slice and get_text.

Consider create_child_anchor as a more convenient alternative to this function. The buffer will add a reference to the anchor, so you can unref it after insertion.

Parameters:

iter – location to insert the anchor
anchor – a GtkTextChildAnchor

insert_interactive(iter: TextIter, text: str, len: int, default_editable: bool) → bool#

Inserts text in buffer.

Like insert, but the insertion will not occur if iter is at a non-editable location in the buffer. Usually you want to prevent insertions at ineditable locations if the insertion results from a user action (is interactive).

default_editable indicates the editability of text that doesn’t have a tag affecting editability applied to it. Typically the result of get_editable is appropriate here.

Parameters:

iter – a position in buffer
text – some UTF-8 text
len – length of text in bytes, or -1
default_editable – default editability of buffer

insert_interactive_at_cursor(text: str, len: int, default_editable: bool) → bool#

Inserts text in buffer.

Calls insert_interactive at the cursor position.

default_editable indicates the editability of text that doesn’t have a tag affecting editability applied to it. Typically the result of get_editable is appropriate here.

Parameters:

text – text in UTF-8 format
len – length of text in bytes, or -1
default_editable – default editability of buffer

insert_markup(iter: TextIter, markup: str, len: int) → None#

Inserts the text in markup at position iter.

markup will be inserted in its entirety and must be nul-terminated and valid UTF-8. Emits the insert_text signal, possibly multiple times; insertion actually occurs in the default handler for the signal. iter will point to the end of the inserted text on return.

Parameters:

iter – location to insert the markup
markup – a nul-terminated UTF-8 string containing Pango markup
len – length of markup in bytes, or -1

insert_paintable(iter: TextIter, paintable: Paintable) → None#

Inserts an image into the text buffer at iter.

The image will be counted as one character in character counts, and when obtaining the buffer contents as a string, will be represented by the Unicode “object replacement character” 0xFFFC. Note that the “slice” variants for obtaining portions of the buffer as a string include this character for paintable, but the “text” variants do not. e.g. see get_slice and get_text.

Parameters:

iter – location to insert the paintable
paintable – a GdkPaintable

insert_range(iter: TextIter, start: TextIter, end: TextIter) → None#

Copies text, tags, and paintables between start and end and inserts the copy at iter.

The order of start and end doesn’t matter.

Used instead of simply getting/inserting text because it preserves images and tags. If start and end are in a different buffer from buffer, the two buffers must share the same tag table.

Implemented via emissions of the ::insert-text and ::apply-tag signals, so expect those.

Parameters:

iter – a position in buffer
start – a position in a GtkTextBuffer
end – another position in the same buffer as start

insert_range_interactive(iter: TextIter, start: TextIter, end: TextIter, default_editable: bool) → bool#

Copies text, tags, and paintables between start and end and inserts the copy at iter.

Same as insert_range, but does nothing if the insertion point isn’t editable. The default_editable parameter indicates whether the text is editable at iter if no tags enclosing iter affect editability. Typically the result of get_editable is appropriate here.

Parameters:

iter – a position in buffer
start – a position in a GtkTextBuffer
end – another position in the same buffer as start
default_editable – default editability of the buffer

insert_with_tags(iter, text, *tags)#

Inserts text into buffer at iter, applying the list of tags to the newly-inserted text.

The last tag specified must be None to terminate the list. Equivalent to calling insert, then apply_tag on the inserted text; this is just a convenience function.

Parameters:

iter – an iterator in buffer
text – UTF-8 text
tags

insert_with_tags_by_name(iter, text, *tags)#

Inserts text into buffer at iter, applying the list of tags to the newly-inserted text.

Same as insert_with_tags, but allows you to pass in tag names instead of tag objects.

Parameters:

iter – position in buffer
text – UTF-8 text
tags

move_mark(mark: TextMark, where: TextIter) → None#

Moves mark to the new location where.

Emits the mark_set signal as notification of the move.

Parameters:

mark – a GtkTextMark
where – new location for mark in buffer

move_mark_by_name(name: str, where: TextIter) → None#

Moves the mark named name (which must exist) to location where.

See move_mark for details.

Parameters:

name – name of a mark
where – new location for mark

paste_clipboard(clipboard: Clipboard, override_location: TextIter | None, default_editable: bool) → None#

Pastes the contents of a clipboard.

If override_location is None, the pasted text will be inserted at the cursor position, or the buffer selection will be replaced if the selection is non-empty.

Note: pasting is asynchronous, that is, we’ll ask for the paste data and return, and at some point later after the main loop runs, the paste data will be inserted.

Parameters:

clipboard – the GdkClipboard to paste from
override_location – location to insert pasted text
default_editable – whether the buffer is editable by default

place_cursor(where: TextIter) → None#

This function moves the “insert” and “selection_bound” marks simultaneously.

If you move them to the same place in two steps with move_mark, you will temporarily select a region in between their old and new locations, which can be pretty inefficient since the temporarily-selected region will force stuff to be recalculated. This function moves them as a unit, which can be optimized.

Parameters:: where – where to put the cursor

redo() → None#: Redoes the next redoable action on the buffer, if there is one.

remove_all_tags(start: TextIter, end: TextIter) → None#

Removes all tags in the range between start and end.

Be careful with this function; it could remove tags added in code unrelated to the code you’re currently writing. That is, using this function is probably a bad idea if you have two or more unrelated code sections that add tags.

Parameters:

start – one bound of range to be untagged
end – other bound of range to be untagged

remove_commit_notify(commit_notify_handler: int) → None#

Removes the GtkTextBufferCommitNotify handler previously registered with add_commit_notify.

This may result in the user_data_destroy being called that was passed when registering the commit notify functions.

Added in version 4.16.

Parameters:: commit_notify_handler – the notify handler identifier returned from add_commit_notify.

remove_selection_clipboard(clipboard: Clipboard) → None#

Removes a GdkClipboard added with add_selection_clipboard

Parameters:: clipboard – a GdkClipboard added to buffer by add_selection_clipboard

remove_tag(tag: TextTag, start: TextIter, end: TextIter) → None#

Emits the “remove-tag” signal.

The default handler for the signal removes all occurrences of tag from the given range. start and end don’t have to be in order.

Parameters:

tag – a GtkTextTag
start – one bound of range to be untagged
end – other bound of range to be untagged

remove_tag_by_name(name: str, start: TextIter, end: TextIter) → None#

Emits the “remove-tag” signal.

Calls lookup on the buffer’s tag table to get a GtkTextTag, then calls remove_tag.

Parameters:

name – name of a GtkTextTag
start – one bound of range to be untagged
end – other bound of range to be untagged

select_range(ins: TextIter, bound: TextIter) → None#

This function moves the “insert” and “selection_bound” marks simultaneously.

If you move them in two steps with move_mark, you will temporarily select a region in between their old and new locations, which can be pretty inefficient since the temporarily-selected region will force stuff to be recalculated. This function moves them as a unit, which can be optimized.

Parameters:

ins – where to put the “insert” mark
bound – where to put the “selection_bound” mark

set_enable_undo(enable_undo: bool) → None#

Sets whether or not to enable undoable actions in the text buffer.

Undoable actions in this context are changes to the text content of the buffer. Changes to tags and marks are not tracked.

If enabled, the user will be able to undo the last number of actions up to get_max_undo_levels.

See begin_irreversible_action and end_irreversible_action to create changes to the buffer that cannot be undone.

Parameters:: enable_undo – True to enable undo

set_max_undo_levels(max_undo_levels: int) → None#

Sets the maximum number of undo levels to perform.

If 0, unlimited undo actions may be performed. Note that this may have a memory usage impact as it requires storing an additional copy of the inserted or removed text within the text buffer.

Parameters:: max_undo_levels – the maximum number of undo actions to perform

set_modified(setting: bool) → None#

Used to keep track of whether the buffer has been modified since the last time it was saved.

Whenever the buffer is saved to disk, call gtk_text_buffer_set_modified (``buffer`, FALSE)`. When the buffer is modified, it will automatically toggle on the modified bit again. When the modified bit flips, the buffer emits the modified_changed signal.

Parameters:: setting – modification flag setting

set_text(text, length=-1)#

Deletes current contents of buffer, and inserts text instead. This is automatically marked as an irreversible action in the undo stack. If you wish to mark this action as part of a larger undo operation, call delete and insert directly instead.

If len is -1, text must be nul-terminated. text must be valid UTF-8.

Parameters:

text – UTF-8 text to insert
length

undo() → None#: Undoes the last undoable action on the buffer, if there is one.

Properties#

class TextBuffer

props.can_redo: bool#: The type of the None singleton.

props.can_undo: bool#: The type of the None singleton.

props.cursor_position: int#: The type of the None singleton.

props.enable_undo: bool#: The type of the None singleton.

props.has_selection: bool#: The type of the None singleton.

props.tag_table: TextTagTable#: The type of the None singleton.

props.text: str#: The type of the None singleton.

Signals#

class TextBuffer.signals

apply_tag(tag: TextTag, start: TextIter, end: TextIter) → None#

The type of the None singleton.

Parameters:

tag – the applied tag
start – the start of the range the tag is applied to
end – the end of the range the tag is applied to

begin_user_action() → None#: The type of the None singleton.

changed() → None#: The type of the None singleton.

delete_range(start: TextIter, end: TextIter) → None#

The type of the None singleton.

Parameters:

start – the start of the range to be deleted
end – the end of the range to be deleted

end_user_action() → None#: The type of the None singleton.

insert_child_anchor(location: TextIter, anchor: TextChildAnchor) → None#

The type of the None singleton.

Parameters:

location – position to insert anchor in textbuffer
anchor – the GtkTextChildAnchor to be inserted

insert_paintable(location: TextIter, paintable: Paintable) → None#

The type of the None singleton.

Parameters:

location – position to insert paintable in textbuffer
paintable – the GdkPaintable to be inserted

insert_text(location: TextIter, text: str, len: int) → None#

The type of the None singleton.

Parameters:

location – position to insert text in textbuffer
text – the UTF-8 text to be inserted
len – length of the inserted text in bytes

mark_deleted(mark: TextMark) → None#

The type of the None singleton.

Parameters:: mark – The mark that was deleted

mark_set(location: TextIter, mark: TextMark) → None#

The type of the None singleton.

Parameters:

location – The location of mark in textbuffer
mark – The mark that is set

modified_changed() → None#: The type of the None singleton.

paste_done(clipboard: Clipboard) → None#

The type of the None singleton.

Parameters:: clipboard – the GdkClipboard pasted from

redo() → None#: Emitted when a request has been made to redo the previously undone operation.

remove_tag(tag: TextTag, start: TextIter, end: TextIter) → None#

The type of the None singleton.

Parameters:

tag – the tag to be removed
start – the start of the range the tag is removed from
end – the end of the range the tag is removed from

undo() → None#: Emitted when a request has been made to undo the previous operation or set of operations that have been grouped together.

Virtual Methods#

class TextBuffer

do_apply_tag(tag: TextTag, start: TextIter, end: TextIter) → None#

Emits the “apply-tag” signal on buffer.

The default handler for the signal applies tag to the given range. start and end do not have to be in order.

Parameters:

tag – a GtkTextTag
start – one bound of range to be tagged
end – other bound of range to be tagged

do_begin_user_action() → None#

Called to indicate that the buffer operations between here and a call to end_user_action() are part of a single user-visible operation.

do_changed() → None#: The type of the None singleton.

do_delete_range(start: TextIter, end: TextIter) → None#

The type of the None singleton.

Parameters:

start
end

do_end_user_action() → None#

Ends a user-visible operation.

Should be paired with a call to begin_user_action. See that function for a full explanation.

do_insert_child_anchor(iter: TextIter, anchor: TextChildAnchor) → None#

Inserts a child widget anchor into the text buffer at iter.

Consider create_child_anchor as a more convenient alternative to this function. The buffer will add a reference to the anchor, so you can unref it after insertion.

Parameters:

iter – location to insert the anchor
anchor – a GtkTextChildAnchor

do_insert_paintable(iter: TextIter, paintable: Paintable) → None#

Inserts an image into the text buffer at iter.

Parameters:

iter – location to insert the paintable
paintable – a GdkPaintable

do_insert_text(pos: TextIter, new_text: str, new_text_length: int) → None#

The type of the None singleton.

Parameters:

pos
new_text
new_text_length

do_mark_deleted(mark: TextMark) → None#

The type of the None singleton.

Parameters:: mark

do_mark_set(location: TextIter, mark: TextMark) → None#

The type of the None singleton.

Parameters:

location
mark

do_modified_changed() → None#: The type of the None singleton.

do_paste_done(clipboard: Clipboard) → None#

The type of the None singleton.

Parameters:: clipboard

do_redo() → None#: Redoes the next redoable action on the buffer, if there is one.

do_remove_tag(tag: TextTag, start: TextIter, end: TextIter) → None#

Emits the “remove-tag” signal.

The default handler for the signal removes all occurrences of tag from the given range. start and end don’t have to be in order.

Parameters:

tag – a GtkTextTag
start – one bound of range to be untagged
end – other bound of range to be untagged

do_undo() → None#: Undoes the last undoable action on the buffer, if there is one.

Fields#

class TextBuffer

parent_instance#

priv#