cut text with Ctrl+X

editor/src/keyboard_input.rs

@@ -1,6 +1,6 @@
 use crate::error::EdResult;
 use crate::mvc::app_model::AppModel;
-use crate::mvc::app_update::{handle_copy, handle_paste, pass_keydown_to_focused};
+use crate::mvc::app_update::{handle_copy, handle_cut, handle_paste, pass_keydown_to_focused};
 use winit::event::VirtualKeyCode::*;
 use winit::event::{ElementState, ModifiersState, VirtualKeyCode};
 
@@ -22,11 +22,7 @@ pub fn handle_keydown(
 
         Copy => handle_copy(app_model)?,
         Paste => handle_paste(app_model)?,
-        Cut => {
-            //handle_cut(app_model)?
-            todo!("cut");
-        }
-
+        Cut => handle_cut(app_model)?,
         C => {
             if modifiers.ctrl() {
                 handle_copy(app_model)?
@@ -39,8 +35,7 @@ pub fn handle_keydown(
         }
         X => {
             if modifiers.ctrl() {
-                //handle_cut(app_model)?
-                todo!("cut");
+                handle_cut(app_model)?
             }
         }
         _ => (),

editor/src/mvc/app_update.rs

@@ -8,7 +8,7 @@ use winit::event::{ModifiersState, VirtualKeyCode};
 pub fn handle_copy(app_model: &mut AppModel) -> EdResult<()> {
     if let Some(ref mut ed_model) = app_model.ed_model_opt {
         if ed_model.has_focus {
-            let selected_str_opt = super::ed_model::get_selected_str(ed_model)?;
+            let selected_str_opt = ed_model.get_selected_str()?;
 
             if let Some(selected_str) = selected_str_opt {
                 app_model::set_clipboard_txt(&mut app_model.clipboard_opt, selected_str)?;
@@ -76,6 +76,22 @@ pub fn handle_paste(app_model: &mut AppModel) -> EdResult<()> {
     Ok(())
 }
 
+pub fn handle_cut(app_model: &mut AppModel) -> EdResult<()> {
+    if let Some(ref mut ed_model) = app_model.ed_model_opt {
+        if ed_model.has_focus {
+            let selected_str_opt = ed_model.get_selected_str()?;
+
+            if let Some(selected_str) = selected_str_opt {
+                app_model::set_clipboard_txt(&mut app_model.clipboard_opt, selected_str)?;
+
+                ed_model.del_selection()?;
+            }
+        }
+    }
+
+    Ok(())
+}
+
 pub fn pass_keydown_to_focused(
     modifiers: &ModifiersState,
     virtual_keycode: VirtualKeyCode,
@@ -102,7 +118,7 @@ pub fn handle_new_char(received_char: &char, app_model: &mut AppModel) -> EdResu
 pub mod test_app_update {
     use crate::mvc::app_model;
     use crate::mvc::app_model::{AppModel, Clipboard};
-    use crate::mvc::app_update::{handle_copy, handle_paste};
+    use crate::mvc::app_update::{handle_copy, handle_cut, handle_paste};
     use crate::mvc::ed_model::{EdModel, Position, RawSelection};
     use crate::mvc::ed_update::test_ed_update::gen_caret_text_buf;
     use crate::selection::test_selection::{all_lines_vec, convert_selection_to_dsl};
@@ -171,12 +187,42 @@ pub mod test_app_update {
         Ok(app_model.clipboard_opt)
     }
 
+    fn assert_cut(
+        pre_lines_str: &[&str],
+        expected_clipboard_content: &str,
+        expected_post_lines_str: &[&str],
+        clipboard_opt: Option<Clipboard>,
+    ) -> Result<Option<Clipboard>, String> {
+        let (caret_pos, selection_opt, pre_text_buf) = gen_caret_text_buf(pre_lines_str)?;
+
+        let mut app_model = mock_app_model(pre_text_buf, caret_pos, selection_opt, clipboard_opt);
+
+        handle_cut(&mut app_model)?;
+
+        let clipboard_content = app_model::get_clipboard_txt(&mut app_model.clipboard_opt)?;
+
+        assert_eq!(clipboard_content, expected_clipboard_content);
+
+        let ed_model = app_model.ed_model_opt.unwrap();
+        let mut text_buf_lines = all_lines_vec(&ed_model.text_buf);
+        let post_lines_str = convert_selection_to_dsl(
+            ed_model.selection_opt,
+            ed_model.caret_pos,
+            &mut text_buf_lines,
+        )?;
+
+        assert_eq!(post_lines_str, expected_post_lines_str);
+
+        Ok(app_model.clipboard_opt)
+    }
+
     #[test]
     #[ignore] // ignored because of clipboard problems on ci
-    fn copy_paste() -> Result<(), String> {
+    fn copy_paste_cut() -> Result<(), String> {
         // can only init clipboard once
         let mut clipboard_opt = AppModel::init_clipboard_opt();
 
+        // copy
         clipboard_opt = assert_copy(&["[a]|"], "a", clipboard_opt)?;
         clipboard_opt = assert_copy(&["|[b]"], "b", clipboard_opt)?;
         clipboard_opt = assert_copy(&["a[ ]|"], " ", clipboard_opt)?;
@@ -188,6 +234,8 @@ pub mod test_app_update {
             "ef\nghi",
             clipboard_opt,
         )?;
+
+        // paste
         clipboard_opt = assert_paste(&["|"], "", &["|"], clipboard_opt)?;
         clipboard_opt = assert_paste(&["|"], "a", &["a|"], clipboard_opt)?;
         clipboard_opt = assert_paste(&["a|"], "b", &["ab|"], clipboard_opt)?;
@@ -196,13 +244,27 @@ pub mod test_app_update {
         clipboard_opt = assert_paste(&["[ab]|"], "d", &["d|"], clipboard_opt)?;
         clipboard_opt = assert_paste(&["a[b]|c"], "e", &["ae|c"], clipboard_opt)?;
         clipboard_opt = assert_paste(&["a\n", "[b\n", "]|"], "f", &["a\n", "f|"], clipboard_opt)?;
-        assert_paste(
+        clipboard_opt = assert_paste(
             &["abc\n", "d[ef\n", "ghi]|\n", "jkl"],
             "ef\nghi",
             &["abc\n", "def\n", "ghi|\n", "jkl"],
             clipboard_opt,
         )?;
 
+        // cut
+        clipboard_opt = assert_cut(&["[a]|"], "a", &["|"], clipboard_opt)?;
+        clipboard_opt = assert_cut(&["|[b]"], "b", &["|"], clipboard_opt)?;
+        clipboard_opt = assert_cut(&["a[ ]|"], " ", &["a|"], clipboard_opt)?;
+        clipboard_opt = assert_cut(&["[ ]|b"], " ", &["|b"], clipboard_opt)?;
+        clipboard_opt = assert_cut(&["a\n", "[b\n", "]|"], "b\n", &["a\n", "|"], clipboard_opt)?;
+        clipboard_opt = assert_cut(&["[a\n", " b\n", "]|"], "a\n b\n", &["|"], clipboard_opt)?;
+        assert_cut(
+            &["abc\n", "d[ef\n", "ghi]|\n", "jkl"],
+            "ef\nghi",
+            &["abc\n", "d|\n", "jkl"],
+            clipboard_opt,
+        )?;
+
         Ok(())
     }
 }

editor/src/mvc/ed_model.rs

@@ -25,14 +25,27 @@ pub fn init_model(file_path: &Path) -> EdResult<EdModel> {
     })
 }
 
-pub fn get_selected_str(ed_model: &EdModel) -> EdResult<Option<&str>> {
-    if let Some(curr_selection) = ed_model.selection_opt {
-        let selected_str = ed_model.text_buf.get_selection(curr_selection)?;
+impl EdModel {
+    pub fn get_selected_str(&self) -> EdResult<Option<&str>> {
+        if let Some(curr_selection) = self.selection_opt {
+            let selected_str = self.text_buf.get_selection(curr_selection)?;
 
             Ok(Some(selected_str))
         } else {
             Ok(None)
         }
+    }
+
+    pub fn del_selection(&mut self) -> EdResult<()> {
+        if let Some(selection) = self.selection_opt {
+            self.text_buf.del_selection(selection)?;
+
+            self.caret_pos = selection.start_pos;
+        }
+        self.selection_opt = None;
+
+        Ok(())
+    }
 }
 
 #[derive(Debug, Copy, Clone)]

editor/src/mvc/ed_update.rs

@@ -353,7 +353,7 @@ pub fn handle_new_char(received_char: &char, ed_model: &mut EdModel) -> EdResult
         }
         '\u{3}' // Ctrl + C
         | '\u{16}' // Ctrl + V
-        | '\u{30}' // Ctrl + X
+        | '\u{18}' // Ctrl + X
         | '\u{e000}'..='\u{f8ff}' // http://www.unicode.org/faq/private_use.html
         | '\u{f0000}'..='\u{ffffd}' // ^
         | '\u{100000}'..='\u{10fffd}' // ^