Want a Matrix client that uses Vim keybindings (#1)

src/windows/welcome.rs

@@ -0,0 +1,71 @@
+use std::ops::{Deref, DerefMut};
+
+use modalkit::tui::{buffer::Buffer, layout::Rect};
+
+use modalkit::{
+    widgets::textbox::TextBoxState,
+    widgets::WindowOps,
+    widgets::{TermOffset, TerminalCursor},
+};
+
+use modalkit::editing::base::{CloseFlags, WordStyle};
+
+use crate::base::{IambBufferId, IambInfo, ProgramStore};
+
+const WELCOME_TEXT: &str = include_str!("welcome.md");
+
+pub struct WelcomeState {
+    tbox: TextBoxState<IambInfo>,
+}
+
+impl WelcomeState {
+    pub fn new(store: &mut ProgramStore) -> Self {
+        let buf = store.buffers.load_str(IambBufferId::Welcome, WELCOME_TEXT);
+
+        WelcomeState { tbox: TextBoxState::new(buf) }
+    }
+}
+
+impl Deref for WelcomeState {
+    type Target = TextBoxState<IambInfo>;
+
+    fn deref(&self) -> &Self::Target {
+        return &self.tbox;
+    }
+}
+
+impl DerefMut for WelcomeState {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        return &mut self.tbox;
+    }
+}
+
+impl TerminalCursor for WelcomeState {
+    fn get_term_cursor(&self) -> Option<TermOffset> {
+        self.tbox.get_term_cursor()
+    }
+}
+
+impl WindowOps<IambInfo> for WelcomeState {
+    fn draw(&mut self, area: Rect, buf: &mut Buffer, focused: bool, store: &mut ProgramStore) {
+        self.tbox.draw(area, buf, focused, store)
+    }
+
+    fn dup(&self, store: &mut ProgramStore) -> Self {
+        let tbox = self.tbox.dup(store);
+
+        WelcomeState { tbox }
+    }
+
+    fn close(&mut self, flags: CloseFlags, store: &mut ProgramStore) -> bool {
+        self.tbox.close(flags, store)
+    }
+
+    fn get_cursor_word(&self, style: &WordStyle) -> Option<String> {
+        self.tbox.get_cursor_word(style)
+    }
+
+    fn get_selected_word(&self) -> Option<String> {
+        self.tbox.get_selected_word()
+    }
+}