fix alt-screen scrollback handling

1 files changed, 69 insertions, 0 deletions

diff --git a/vendor/vt100/src/callbacks.rs b/vendor/vt100/src/callbacks.rs
new file mode 100644
index 00000000..cce6f6c0
--- /dev/null
+++ b/vendor/vt100/src/callbacks.rs
@@ -0,0 +1,69 @@
+/// This trait is used by the parser to handle extra escape sequences that
+/// don't have an impact on the terminal screen directly.
+pub trait Callbacks {
+    /// This callback is called when the terminal requests an audible bell
+    /// (typically with `^G`).
+    fn audible_bell(&mut self, _: &mut crate::Screen) {}
+    /// This callback is called when the terminal requests a visual bell
+    /// (typically with `\eg`).
+    fn visual_bell(&mut self, _: &mut crate::Screen) {}
+    /// This callback is called when the terminal requests a resize
+    /// (typically with `\e[8;<rows>;<cols>t`).
+    fn resize(&mut self, _: &mut crate::Screen, _request: (u16, u16)) {}
+    /// This callback is called when the terminal requests the window title
+    /// to be set (typically with `\e]1;<icon_name>\a`)
+    fn set_window_icon_name(
+        &mut self,
+        _: &mut crate::Screen,
+        _icon_name: &[u8],
+    ) {
+    }
+    /// This callback is called when the terminal requests the window title
+    /// to be set (typically with `\e]2;<title>\a`)
+    fn set_window_title(&mut self, _: &mut crate::Screen, _title: &[u8]) {}
+    /// This callback is called when the terminal requests data to be copied
+    /// to the system clipboard (typically with `\e]52;<ty>;<data>\a`). Note
+    /// that `data` will be encoded as base64.
+    fn copy_to_clipboard(
+        &mut self,
+        _: &mut crate::Screen,
+        _ty: &[u8],
+        _data: &[u8],
+    ) {
+    }
+    /// This callback is called when the terminal requests data to be pasted
+    /// from the system clipboard (typically with `\e]52;<ty>;?\a`).
+    fn paste_from_clipboard(&mut self, _: &mut crate::Screen, _ty: &[u8]) {}
+    /// This callback is called when the terminal receives an escape sequence
+    /// which is otherwise not implemented.
+    fn unhandled_char(&mut self, _: &mut crate::Screen, _c: char) {}
+    /// This callback is called when the terminal receives a control
+    /// character which is otherwise not implemented.
+    fn unhandled_control(&mut self, _: &mut crate::Screen, _b: u8) {}
+    /// This callback is called when the terminal receives an escape sequence
+    /// which is otherwise not implemented.
+    fn unhandled_escape(
+        &mut self,
+        _: &mut crate::Screen,
+        _i1: Option<u8>,
+        _i2: Option<u8>,
+        _b: u8,
+    ) {
+    }
+    /// This callback is called when the terminal receives a CSI sequence
+    /// (`\e[`) which is otherwise not implemented.
+    fn unhandled_csi(
+        &mut self,
+        _: &mut crate::Screen,
+        _i1: Option<u8>,
+        _i2: Option<u8>,
+        _params: &[&[u16]],
+        _c: char,
+    ) {
+    }
+    /// This callback is called when the terminal receives a OSC sequence
+    /// (`\e]`) which is otherwise not implemented.
+    fn unhandled_osc(&mut self, _: &mut crate::Screen, _params: &[&[u8]]) {}
+}
+
+impl Callbacks for () {}