Merge pull request #2 from gizak/master

Update fork

README.md

@@ -79,9 +79,10 @@ Run an example with `go run _examples/{example}.go` or run all of them consecuti
 
 ## Uses
 
-- [cjbassi/gotop](https://github.com/cjbassi/gotop)
-- [ethereum/go-ethereum/monitorcmd](https://github.com/ethereum/go-ethereum/blob/master/cmd/geth/monitorcmd.go)
-- [mikepea/go-jira-ui](https://github.com/mikepea/go-jira-ui)
+- [go-ethereum/monitorcmd](https://github.com/ethereum/go-ethereum/blob/master/cmd/geth/monitorcmd.go)
+- [go-jira-ui](https://github.com/mikepea/go-jira-ui)
+- [gotop](https://github.com/cjbassi/gotop)
+- [termeter](https://github.com/atsaki/termeter)
 
 ## Related Works
 

_examples/list.go

@@ -49,6 +49,12 @@ func main() {
 		case "k", "<Up>":
 			l.ScrollUp()
 			ui.Render(l)
+		case "<C-f>":
+			l.PageDown()
+			ui.Render(l)
+		case "<C-b>":
+			l.PageUp()
+			ui.Render(l)
 		}
 	}
 }

widgets/list.go

@@ -96,20 +96,26 @@ func (self *List) ScrollDown() {
 	}
 }
 
-func (self *List) PageUp() { // Goes up one whole page.
-	if int(self.SelectedRow)-self.Inner.Dy() >= 0 {
-		self.topRow -= uint(self.Inner.Dy())
-	} else { // If at the first 'page', then go to the top and select the first item.
+// PageUp scrolls up one whole page.
+func (self *List) PageUp() {
+	// if on the first 'page'
+	if int(self.SelectedRow)-self.Inner.Dy() < 0 {
+		// go to the top
 		self.topRow = 0
+	} else {
+		self.topRow = uint(MaxInt(int(self.topRow)-self.Inner.Dy(), 0))
 	}
 	self.SelectedRow = self.topRow
 }
 
-func (self *List) PageDown() { // Down one whole page
-	if len(self.Rows)-int(self.topRow) > self.Inner.Dy() {
+// PageDown scolls down one whole page.
+func (self *List) PageDown() {
+	// if on last 'page'
+	if len(self.Rows)-int(self.topRow) <= self.Inner.Dy() {
+		// select last item
+		self.SelectedRow = uint(len(self.Rows) - 1)
+	} else {
 		self.topRow += uint(self.Inner.Dy())
 		self.SelectedRow = self.topRow
-	} else { // If at last 'page', then select last item.
-		self.SelectedRow = uint(len(self.Rows) - 1)
 	}
 }