vecfinder

commit dd9d7d30ab0380a8f399f9003a36510c0b6d841a
parent 062d92b04571a4f93163cafab7756ced100ad282
Author: finwo <finwo@pm.me>
Date:   Sat, 21 Mar 2026 05:19:05 +0100

Clamp preview to file length; keep selected file in view

Diffstat:
M
vecfinder.js
 | 
52
+++++++++++++++++++++++++++++++++++++++++++++++++---

1 file changed, 49 insertions(+), 3 deletions(-)
diff --git a/vecfinder.js b/vecfinder.js
@@ -275,6 +275,7 @@ class UI {
     this.store = store;
     this.query = '';
     this.selectedIndex = 0;
+    this.listOffset = 0;
     this.previewOffset = 0;
     this.rl = null;
     this._previewWrapped = null;
@@ -286,6 +287,7 @@ class UI {
     this.store.on('documentAdded', () => this.render());
     this.store.on('queryUpdated', () => {
       this.selectedIndex = 0;
+      this.listOffset = 0;
       this.previewOffset = 0;
       this.render();
     });
@@ -309,6 +311,20 @@ class UI {
     if (this.rl) this.rl.close();
   }
 
+  adjustListOffset(maxHeight) {
+    const results = this.store.getResults();
+    const topThreshold = this.listOffset + 2;
+    const bottomThreshold = this.listOffset + maxHeight - 3;
+
+    if (this.selectedIndex < topThreshold) {
+      this.listOffset = Math.max(0, this.selectedIndex - 2);
+    } else if (this.selectedIndex > bottomThreshold) {
+      this.listOffset = Math.min(results.length - maxHeight, this.selectedIndex - (maxHeight - 3));
+    }
+
+    this.listOffset = Math.max(0, Math.min(this.listOffset, Math.max(0, results.length - maxHeight)));
+  }
+
   handleKeyPress(str, key) {
     if (!key) return;
 
@@ -321,6 +337,9 @@ class UI {
       if (this.selectedIndex > 0) {
         this.selectedIndex--;
         this.previewOffset = 0;
+        const height = process.stdout.rows || 24;
+        const maxHeight = height - 4;
+        this.adjustListOffset(maxHeight);
         this.render();
       }
       return;
@@ -331,11 +350,35 @@ class UI {
       if (this.selectedIndex < results.length - 1) {
         this.selectedIndex++;
         this.previewOffset = 0;
+        const height = process.stdout.rows || 24;
+        const maxHeight = height - 4;
+        this.adjustListOffset(maxHeight);
         this.render();
       }
       return;
     }
 
+    if (key.name === 'home') {
+      this.selectedIndex = 0;
+      this.previewOffset = 0;
+      const height = process.stdout.rows || 24;
+      const maxHeight = height - 4;
+      this.adjustListOffset(maxHeight);
+      this.render();
+      return;
+    }
+
+    if (key.name === 'end') {
+      const results = this.store.getResults();
+      this.selectedIndex = results.length - 1;
+      this.previewOffset = 0;
+      const height = process.stdout.rows || 24;
+      const maxHeight = height - 4;
+      this.adjustListOffset(maxHeight);
+      this.render();
+      return;
+    }
+
     if (key.name === 'pageup') {
       this.previewOffset = Math.max(0, this.previewOffset - 10);
       this.render();
@@ -343,7 +386,10 @@ class UI {
     }
 
     if (key.name === 'pagedown') {
-      this.previewOffset += 10;
+      const height = process.stdout.rows || 24;
+      const previewHeight = height - 4;
+      const maxPreviewOffset = this._previewWrapped ? Math.max(0, this._previewWrapped.length - previewHeight) : 0;
+      this.previewOffset = Math.min(maxPreviewOffset, this.previewOffset + 10);
       this.render();
       return;
     }
@@ -395,8 +441,8 @@ class UI {
 
     // Rows
     for (let row = 0; row < maxHeight; row++) {
-      const result = results[row];
-      const isSelected = (row === this.selectedIndex);
+      const result = results[row + this.listOffset];
+      const isSelected = (row + this.listOffset === this.selectedIndex);
 
       // Left pane - name left, score right
       let left;