typedef Pseudoterminal

Implement to handle when the number of rows and columns that fit into the terminal panel changes, for example when font size changes or when the panel is resized. The initial state of a terminal's dimensions should be treated as undefined until this is triggered as the size of a terminal isn't known until it shows up in the user interface.

When dimensions are overridden by {@link Pseudoterminal.onDidOverrideDimensions onDidOverrideDimensions}, setDimensions will continue to be called with the regular panel dimensions, allowing the extension continue to react dimension changes.

Parameters:

Implement to handle when the pty is open and ready to start firing events.

Parameters:

An event that when fired will write data to the terminal. Unlike {@link Terminal.sendText} which sends text to the underlying child pseudo-device (the child), this will write the text to parent pseudo-device (the terminal itself).

Note writing \n will just move the cursor down 1 row, you need to write \r as well to move the cursor to the left-most cell.

Example: Write red text to the terminal

const writeEmitter = new vscode.EventEmitter<string>();
const pty: vscode.Pseudoterminal = {
onDidWrite: writeEmitter.event,
open: () => writeEmitter.fire('\x1b[31mHello world\x1b[0m'),
close: () => {}
};
vscode.window.createTerminal({ name: 'My terminal', pty });

Example: Move the cursor to the 10th row and 20th column and write an asterisk

writeEmitter.fire('\x1b[10;20H*');

An event that when fired allows overriding the {@link Pseudoterminal.setDimensions dimensions} of the terminal. Note that when set, the overridden dimensions will only take effect when they are lower than the actual dimensions of the terminal (ie. there will never be a scroll bar). Set to undefined for the terminal to go back to the regular dimensions (fit to the size of the panel).

Example: Override the dimensions of a terminal to 20 columns and 10 rows

const dimensionsEmitter = new vscode.EventEmitter<vscode.TerminalDimensions>();
const pty: vscode.Pseudoterminal = {
onDidWrite: writeEmitter.event,
onDidOverrideDimensions: dimensionsEmitter.event,
open: () => {
  dimensionsEmitter.fire({
    columns: 20,
    rows: 10
  });
},
close: () => {}
};
vscode.window.createTerminal({ name: 'My terminal', pty });

An event that when fired will signal that the pty is closed and dispose of the terminal.

A number can be used to provide an exit code for the terminal. Exit codes must be positive and a non-zero exit codes signals failure which shows a notification for a regular terminal and allows dependent tasks to proceed when used with the CustomExecution API.

Example: Exit the terminal when "y" is pressed, otherwise show a notification.

const writeEmitter = new vscode.EventEmitter<string>();
const closeEmitter = new vscode.EventEmitter<vscode.TerminalDimensions>();
const pty: vscode.Pseudoterminal = {
onDidWrite: writeEmitter.event,
onDidClose: closeEmitter.event,
open: () => writeEmitter.fire('Press y to exit successfully'),
close: () => {},
handleInput: data => {
  if (data !== 'y') {
    vscode.window.showInformationMessage('Something went wrong');
  }
  closeEmitter.fire();
}
};
vscode.window.createTerminal({ name: 'Exit example', pty });

An event that when fired allows changing the name of the terminal.

Example: Change the terminal name to "My new terminal".

const writeEmitter = new vscode.EventEmitter<string>();
const changeNameEmitter = new vscode.EventEmitter<string>();
const pty: vscode.Pseudoterminal = {
onDidWrite: writeEmitter.event,
onDidChangeName: changeNameEmitter.event,
open: () => changeNameEmitter.fire('My new terminal'),
close: () => {}
};
vscode.window.createTerminal({ name: 'My terminal', pty });

Implement to handle incoming keystrokes in the terminal or when an extension calls {@link Terminal.sendText}. data contains the keystrokes/text serialized into their corresponding VT sequence representation.

Parameters:

const writeEmitter = new vscode.EventEmitter<string>();
const pty: vscode.Pseudoterminal = {
onDidWrite: writeEmitter.event,
open: () => {},
close: () => {},
handleInput: data => writeEmitter.fire(data === '\r' ? '\r\n' : data)
};
vscode.window.createTerminal({ name: 'Local echo', pty });

Implement to handle when the terminal is closed by an act of the user.