From c29eed3a94d7b38a2c9ff9d66db1cb1a1f32929d Mon Sep 17 00:00:00 2001
From: Jeremy Soller <jackpot51@gmail.com>
Date: Wed, 19 Oct 2022 11:08:15 -0600
Subject: [PATCH] Implement Home/End

---
 examples/editor-libcosmic/src/text_box.rs |  8 ++++++++
 examples/editor-orbclient/src/main.rs     |  2 ++
 src/buffer.rs                             | 17 +++++++++++++++++
 3 files changed, 27 insertions(+)

diff --git a/examples/editor-libcosmic/src/text_box.rs b/examples/editor-libcosmic/src/text_box.rs
index 49fc090..9655bbd 100644
--- a/examples/editor-libcosmic/src/text_box.rs
+++ b/examples/editor-libcosmic/src/text_box.rs
@@ -239,6 +239,14 @@ where
                     buffer.action(TextAction::Delete);
                     return Status::Captured;
                 },
+                KeyCode::Home => {
+                    buffer.action(TextAction::Home);
+                    return Status::Captured;
+                },
+                KeyCode::End => {
+                    buffer.action(TextAction::End);
+                    return Status::Captured;
+                },
                 KeyCode::PageUp => {
                     buffer.action(TextAction::PageUp);
                     return Status::Captured;
diff --git a/examples/editor-orbclient/src/main.rs b/examples/editor-orbclient/src/main.rs
index bdf58a5..3413f33 100644
--- a/examples/editor-orbclient/src/main.rs
+++ b/examples/editor-orbclient/src/main.rs
@@ -166,6 +166,8 @@ fn main() {
                     orbclient::K_DOWN if event.pressed => buffer.action(TextAction::Down),
                     orbclient::K_BKSP if event.pressed => buffer.action(TextAction::Backspace),
                     orbclient::K_DEL if event.pressed => buffer.action(TextAction::Delete),
+                    orbclient::K_HOME if event.pressed => buffer.action(TextAction::Home),
+                    orbclient::K_END if event.pressed => buffer.action(TextAction::End),
                     orbclient::K_PGUP if event.pressed => buffer.action(TextAction::PageUp),
                     orbclient::K_PGDN if event.pressed => buffer.action(TextAction::PageDown),
                     orbclient::K_0 if event.pressed && ctrl_pressed => {
diff --git a/src/buffer.rs b/src/buffer.rs
index cc37d7c..57f94c7 100644
--- a/src/buffer.rs
+++ b/src/buffer.rs
@@ -21,6 +21,10 @@ pub enum TextAction {
     Backspace,
     /// Delete text in front of cursor
     Delete,
+    /// Move cursor to start of line
+    Home,
+    /// Move cursor to end of line
+    End,
     /// Scroll up one page
     PageUp,
     /// Scroll down one page
@@ -382,6 +386,19 @@ impl<'a> TextBuffer<'a> {
                     self.reshape_line(line.line_i);
                 }
             },
+            TextAction::Home => {
+                if self.cursor.glyph > 0 {
+                    self.cursor.glyph = 0;
+                    self.redraw = true;
+                }
+            },
+            TextAction::End => {
+                let line = &self.layout_lines[self.cursor.line];
+                if self.cursor.glyph < line.glyphs.len() {
+                    self.cursor.glyph = line.glyphs.len();
+                    self.redraw = true;
+                }
+            }
             TextAction::PageUp => {
                 self.scroll -= self.lines();
                 self.redraw = true;