Merge pull request #821 from helix-editor/idle-timer

Idle timer / Autocompletion

1 files changed, 21 insertions, 7 deletions

diff --git a/helix-term/src/commands.rs b/helix-term/src/commands.rs
index c1fd7bfe..95c46a4e 100644
--- a/helix-term/src/commands.rs
+++ b/helix-term/src/commands.rs
@@ -4051,7 +4051,7 @@ fn remove_primary_selection(cx: &mut Context) {
     doc.set_selection(view.id, selection);
 }
 
-fn completion(cx: &mut Context) {
+pub fn completion(cx: &mut Context) {
     // trigger on trigger char, or if user calls it
     // (or on word char typing??)
     // after it's triggered, if response marked is_incomplete, update on every subsequent keypress
@@ -4096,10 +4096,8 @@ fn completion(cx: &mut Context) {
     };
 
     let offset_encoding = language_server.offset_encoding();
-    let cursor = doc
-        .selection(view.id)
-        .primary()
-        .cursor(doc.text().slice(..));
+    let text = doc.text().slice(..);
+    let cursor = doc.selection(view.id).primary().cursor(text);
 
     let pos = pos_to_lsp_pos(doc.text(), cursor, offset_encoding);
 
@@ -4107,6 +4105,15 @@ fn completion(cx: &mut Context) {
 
     let trigger_offset = cursor;
 
+    // TODO: trigger_offset should be the cursor offset but we also need a starting offset from where we want to apply
+    // completion filtering. For example logger.te| should filter the initial suggestion list with "te".
+
+    use helix_core::chars;
+    let mut iter = text.chars_at(cursor);
+    iter.reverse();
+    let offset = iter.take_while(|ch| chars::char_is_word(*ch)).count();
+    let start_offset = cursor.saturating_sub(offset);
+
     cx.callback(
         future,
         move |editor: &mut Editor,
@@ -4129,7 +4136,7 @@ fn completion(cx: &mut Context) {
             };
 
             if items.is_empty() {
-                editor.set_error("No completion available".to_string());
+                // editor.set_error("No completion available".to_string());
                 return;
             }
             let size = compositor.size();
@@ -4137,7 +4144,14 @@ fn completion(cx: &mut Context) {
                 .find(std::any::type_name::<ui::EditorView>())
                 .unwrap();
             if let Some(ui) = ui.as_any_mut().downcast_mut::<ui::EditorView>() {
-                ui.set_completion(items, offset_encoding, trigger_offset, size);
+                ui.set_completion(
+                    editor,
+                    items,
+                    offset_encoding,
+                    start_offset,
+                    trigger_offset,
+                    size,
+                );
             };
         },
     );