72 lines
1.6 KiB
Go
72 lines
1.6 KiB
Go
// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
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// Use of this source code is governed by a MIT license that can
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// be found in the LICENSE file.
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package widgets
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import (
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"image"
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. "github.com/gizak/termui"
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)
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// TabPane is a renderable widget which can be used to conditionally render certain tabs/views.
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// TabPane shows a list of Tab names.
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// The currently selected tab can be found through the `ActiveTabIndex` field.
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type TabPane struct {
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Block
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TabNames []string
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ActiveTabIndex uint
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ActiveTabStyle Style
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InactiveTabStyle Style
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}
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func NewTabPane(names ...string) *TabPane {
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return &TabPane{
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Block: *NewBlock(),
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TabNames: names,
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ActiveTabStyle: Theme.Tab.Active,
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InactiveTabStyle: Theme.Tab.Inactive,
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}
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}
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func (self *TabPane) FocusLeft() {
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if self.ActiveTabIndex > 0 {
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self.ActiveTabIndex--
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}
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}
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func (self *TabPane) FocusRight() {
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if self.ActiveTabIndex < uint(len(self.TabNames)-1) {
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self.ActiveTabIndex++
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}
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}
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func (self *TabPane) Draw(buf *Buffer) {
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self.Block.Draw(buf)
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xCoordinate := self.Inner.Min.X
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for i, name := range self.TabNames {
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ColorPair := self.InactiveTabStyle
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if uint(i) == self.ActiveTabIndex {
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ColorPair = self.ActiveTabStyle
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}
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buf.SetString(
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TrimString(name, self.Inner.Max.X-xCoordinate),
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ColorPair,
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image.Pt(xCoordinate, self.Inner.Min.Y),
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)
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xCoordinate += 1 + len(name)
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if i < len(self.TabNames)-1 && xCoordinate < self.Inner.Max.X {
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buf.SetCell(
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NewCell(VERTICAL_LINE, NewStyle(ColorWhite)),
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image.Pt(xCoordinate, self.Inner.Min.Y),
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)
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}
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xCoordinate += 2
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}
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}
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