How to get the current line text in TextArea (without knowing the line number)?

[learnbyexample]

Hello.

I'm trying to implement smart indent when the Enter key is pressed. Currently, I'm able to mimic the current indentation level using this code:

class ExtendedTextArea(TextArea):
    def _on_key(self, event):
        if event.key == 'enter':
            n = self.get_cursor_line_start_location(smart_home=True)[1]
            self.insert(f'\n{" " * n}')
            event.prevent_default()

The above code gets the location of the first non-whitespace character and inserts that many spaces on the new line.

I couldn't figure out how to get the current line's content. That'd help me to add another level of indentation if the current line is a control structure.

PS: If this kinda smart indent is already available in TextArea, let me know 😅

[darrenburns]

Use cursor_line_index, cursor_column_index = self.cursor_location to get the cursor location indices.

You can use self.document.get_line(line_index) to get the line content as a string.

[learnbyexample]

Did you mean self.app.cursor_position? I got AttributeError without app prefix.

Then I got list index out of range.

class ExtendedTextArea(TextArea):
    def _on_key(self, event):
        if event.key == 'enter':
            cursor_line_index, cursor_column_index = self.app.cursor_position
            line = self.document.get_line(cursor_line_index)
            self.insert(f'\ntest: {line}')
            event.prevent_default()

[darrenburns]

Sorry, I meant cursor_location (edited the original response now).

[learnbyexample]

Thanks, that worked!