command system; first for transport

crates/tek_sequencer/src/sequencer_cmd.rs

@@ -1,4 +1,26 @@
 use crate::*;
+
+enum SequencerCommand {
+    FocusNext,
+    FocusPrev,
+    FocusUp,
+    FocusDown,
+    FocusLeft,
+    FocusRight,
+    Transport(TransportCommand),
+    Phrase(PhrasePoolCommand),
+    Editor(PhraseEditorCommand),
+}
+
+enum PhrasePoolCommand {
+}
+
+enum PhraseLengthCommand {
+}
+
+enum PhraseEditorCommand {
+}
+
 /// Handle top-level events in standalone sequencer.
 impl Handle<Tui> for Sequencer<Tui> {
     fn handle (&mut self, from: &TuiInput) -> Perhaps<bool> {