code reuse improved and added scrolling to controls view

1 files changed, 33 insertions, 0 deletions

diff --git a/pkg/gui/gui-util.go b/pkg/gui/gui-util.go
index d3f0934..2ae8cae 100644
--- a/pkg/gui/gui-util.go
+++ b/pkg/gui/gui-util.go
@@ -132,3 +132,36 @@ func (gui *Gui) refreshAfterSort(g *gocui.Gui) error {
 	gui.refreshViews(g, entity)
 	return nil
 }
+
+// cursor down acts like half-page down for faster scrolling
+func (gui *Gui) fastCursorDown(g *gocui.Gui, v *gocui.View) error {
+	if v != nil {
+		ox, oy := v.Origin()
+		_, vy := v.Size()
+
+		// TODO: do something when it hits bottom
+		if err := v.SetOrigin(ox, oy+vy/2); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// cursor up acts like half-page up for faster scrolling
+func (gui *Gui) fastCursorUp(g *gocui.Gui, v *gocui.View) error {
+	if v != nil {
+		ox, oy := v.Origin()
+		_, vy := v.Size()
+
+		if oy-vy/2 > 0 {
+			if err := v.SetOrigin(ox, oy-vy/2); err != nil {
+				return err
+			}
+		} else if oy-vy/2 <= 0 {
+			if err := v.SetOrigin(0, 0); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}