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default menu height dynamically

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This commit is contained in:
Bradley Cicenas 2017-01-04 22:25:27 +00:00
parent 0fd67731b5
commit c9a207ebfd
1 changed files with 19 additions and 21 deletions
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40
menu.go
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@ -27,22 +27,23 @@ func NewMenu(items []string) *Menu {
Selectable: false,
cursorPos: 0,
}
m.Width = calcWidth(items)
m.Width, m.Height = calcSize(items)
return m
}
// return dynamic width based on string len in items
func calcWidth(items []string) int {
maxWidth := 0
// return width and height based on menu items
func calcSize(items []string) (w, h int) {
h = len(items) + (padding * 2)
w = minWidth
for _, s := range items {
if len(s) > maxWidth {
maxWidth = len(s)
if len(s) > w {
w = len(s)
}
}
if maxWidth < minWidth {
maxWidth = minWidth
}
return maxWidth + (padding * 2)
w += (padding * 2)
return w, h
}
func (m *Menu) Buffer() ui.Buffer {
@ -51,7 +52,7 @@ func (m *Menu) Buffer() ui.Buffer {
buf := m.Block.Buffer()
for n, item := range m.Items {
x := 2 // initial offset
x := padding
for _, ch := range item {
// invert bg/fg colors on currently selected row
if m.Selectable && n == m.cursorPos {
@ -59,7 +60,7 @@ func (m *Menu) Buffer() ui.Buffer {
} else {
cell = ui.Cell{Ch: ch, Fg: m.TextFgColor, Bg: m.TextBgColor}
}
buf.Set(x, n+2, cell)
buf.Set(x, n+padding, cell)
x++
}
}
@ -67,14 +68,14 @@ func (m *Menu) Buffer() ui.Buffer {
return buf
}
func (m *Menu) Up() {
func (m *Menu) Up(ui.Event) {
if m.cursorPos > 0 {
m.cursorPos--
ui.Render(m)
}
}
func (m *Menu) Down() {
func (m *Menu) Down(ui.Event) {
if m.cursorPos < (len(m.Items) - 1) {
m.cursorPos++
ui.Render(m)
@ -86,7 +87,6 @@ func HelpMenu(g *Grid) {
"[h] - open this help dialog",
"[q] - exit ctop",
})
m.Height = 10
m.TextFgColor = ui.ColorWhite
m.BorderLabel = "Help"
m.BorderFg = ui.ColorCyan
@ -99,17 +99,15 @@ func HelpMenu(g *Grid) {
func SortMenu(g *Grid) {
m := NewMenu(SortFields)
m.Height = 10
m.Selectable = true
m.TextFgColor = ui.ColorWhite
m.BorderLabel = "Sort Field"
m.BorderFg = ui.ColorCyan
ui.Render(m)
ui.Handle("/sys/kbd/<up>", func(ui.Event) {
m.Up()
})
ui.Handle("/sys/kbd/<down>", func(ui.Event) {
m.Down()
ui.Handle("/sys/kbd/<up>", m.Up)
ui.Handle("/sys/kbd/<down>", m.Down)
ui.Handle("/sys/kbd/q", func(ui.Event) {
ui.StopLoop()
})
ui.Handle("/sys/kbd/<enter>", func(ui.Event) {
g.containerMap.config.sortField = m.Items[m.cursorPos]