[#1223] lens/tui: Fix records view update

Signed-off-by: Aleksey Savchuk <a.savchuk@yadro.com>

cmd/frostfs-lens/internal/tuiutil/input.go

@@ -1,9 +1,6 @@
 package tuiutil
 
 import (
-	"fmt"
-	"os"
-
 	"github.com/gdamore/tcell/v2"
 	"github.com/rivo/tview"
 )
@@ -41,8 +38,6 @@ func (f *InputFieldWithHistory) AddToHistory(s string) {
 
 func (f *InputFieldWithHistory) InputHandler() func(event *tcell.EventKey, setFocus func(p tview.Primitive)) {
 	return f.WrapInputHandler(func(event *tcell.EventKey, _ func(tview.Primitive)) {
-		fmt.Fprintln(os.Stderr, len(f.history))
-
 		switch event.Key() {
 		case tcell.KeyDown:
 			if len(f.history) == 0 {

cmd/frostfs-lens/internal/tuiutil/records.go

@@ -84,7 +84,7 @@ func (v *RecordsView) Unmount() {
 	v.onUnmount = nil
 }
 
-func (v *RecordsView) Update(ctx context.Context) error {
+func (v *RecordsView) Update(_ context.Context) error {
 	_, _, _, recordsPerPage := v.GetInnerRect()
 	newLastRecordIndex := v.firstRecordIndex + recordsPerPage
 
@@ -98,15 +98,11 @@ func (v *RecordsView) Update(ctx context.Context) error {
 	}
 
 	for len(v.records) < newLastRecordIndex {
-		select {
+		record, ok := <-v.buffer
-		case <-ctx.Done():
+		if !ok {
-			return nil
+			break
-		case record, ok := <-v.buffer:
-			if !ok {
-				break
-			}
-			v.records = append(v.records, record)
 		}
+		v.records = append(v.records, record)
 	}
 	v.lastRecordIndex = min(len(v.records), newLastRecordIndex)
 
@@ -115,7 +111,12 @@ func (v *RecordsView) Update(ctx context.Context) error {
 
 func (v *RecordsView) GetInnerRect() (int, int, int, int) {
 	x, y, width, height := v.Box.GetInnerRect()
-	return x + 3, y + 1, width - 3, height - 1
+
+	// Padding.
+	x = min(x+3, x+width-1)
+	width = max(width-3, 0)
+
+	return x, y, width, height
 }
 
 func (v *RecordsView) Draw(screen tcell.Screen) {