Add 'X' button to password filter.

cmd/passgo-gui/main.go

@@ -376,6 +376,13 @@ func eventLoop() {
 		Color:      black,
 		Background: gray,
 	}
+	xBtn := &Button{
+		Size:       unit.Sp(fontSize),
+		Label:      "X",
+		Alignment:  text.Middle,
+		Color:      black,
+		Background: gray,
+	}
 
 	insertLabel := material.Label(th, unit.Sp(fontSize), "Insert")
 	passnameLabel := material.Label(th, unit.Sp(fontSize), "password name:")
@@ -410,6 +417,7 @@ func eventLoop() {
 		return <-passch
 	}
 
+	lpf1 := &layout.Flex{Axis: layout.Horizontal}
 	listPage = func(gtx C) D {
 		// timing variables used for animation
 		fade1a, fade1b := 1.5, 2.0
@@ -417,8 +425,18 @@ func eventLoop() {
 		fade2a, end := start2+1.5, start2+2.0
 
 		c2 := layout.Rigid(func(gtx C) D {
+			c21 := layout.Flexed(1, func(gtx C) D {
 				return material.Editor(th, FilterEd, "filter").Layout(gtx)
 			})
+			c22 := layout.Rigid(func(gtx C) D {
+				return xBtn.Layout(gtx)
+			})
+			if xBtn.Clicked() {
+				FilterEd.SetText("")
+				updateBtns()
+			}
+			return lpf1.Layout(gtx, c21, c22)
+		})
 		c3 := layout.Flexed(1.0, func(gtx C) D {
 			var ret D
 			mux.Lock()