A lot of layout work
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250
wdgt_list.go
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250
wdgt_list.go
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/*
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Copyright © Brian Buller <brian@bullercodeworks.com>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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package widgets
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import (
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wh "git.bullercodeworks.com/brian/tcell-widgets/helpers"
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"github.com/gdamore/tcell"
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)
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type List struct {
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id string
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title string
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style tcell.Style
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active bool
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visible bool
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focusable bool
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tabbable bool
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x, y int
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w, h int
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border []rune
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cursor int
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cursorWrap bool
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list []string
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itemsStyle map[int]tcell.Style
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onSelect func(int, string) bool
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keyMap KeyMap
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vimMode bool
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logger func(string, ...any)
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}
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var _ Widget = (*List)(nil)
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func NewList(id string, style tcell.Style) *List {
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ret := &List{style: style}
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ret.Init(id, style)
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return ret
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}
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func (w *List) Init(id string, style tcell.Style) {
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w.id = id
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w.style = style
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w.focusable = true
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w.keyMap = NewKeyMap(map[tcell.Key]func(ev *tcell.EventKey) bool{
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tcell.KeyUp: w.MoveUp,
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tcell.KeyDown: w.MoveDown,
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tcell.KeyEnter: func(ev *tcell.EventKey) bool {
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if w.onSelect != nil && w.cursor < len(w.list) {
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return w.onSelect(w.cursor, w.list[w.cursor])
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}
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return false
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},
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})
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w.keyMap.AddRune('j', func(ev *tcell.EventKey) bool {
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if w.vimMode {
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return w.MoveDown(ev)
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}
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return false
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})
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w.keyMap.AddRune('k', func(ev *tcell.EventKey) bool {
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if w.vimMode {
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return w.MoveUp(ev)
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}
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return false
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})
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w.itemsStyle = make(map[int]tcell.Style)
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w.tabbable = true
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}
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func (w *List) Id() string { return w.id }
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func (w *List) HandleResize(ev *tcell.EventResize) {
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w.w, w.h = ev.Size()
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// Fill as much space as we're given
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// w.w = wh.Min(w.w, w.WantW())
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// w.h = wh.Min(w.h, w.WantH())
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}
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func (w *List) HandleKey(ev *tcell.EventKey) bool {
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if !w.active || !w.focusable {
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return false
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}
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return w.keyMap.Handle(ev)
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}
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func (w *List) HandleTime(ev *tcell.EventTime) {}
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func (w *List) Draw(screen tcell.Screen) {
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dS := w.style
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if !w.active {
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dS = dS.Dim(true)
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}
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x, y := w.x, w.y
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brdSz := 0
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if len(w.border) > 0 {
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brdSz = 2
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if len(w.title) > 0 {
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wh.TitledBorderFilled(x, y, x+w.w, y+w.h, w.title, w.border, dS, screen)
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} else {
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wh.BorderFilled(x, y, x+w.w, y+w.h, w.border, dS, screen)
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}
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}
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x, y = x+1, y+1
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for i := range w.list {
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rev := false
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if i == w.cursor {
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rev = true
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}
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txt := w.list[i]
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if len(txt) > w.w-brdSz {
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txt = txt[:(w.w - brdSz)]
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}
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var ok bool
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var s tcell.Style
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if s, ok = w.itemsStyle[i]; !ok {
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s = dS
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}
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wh.DrawText(x, y, txt, s.Reverse(rev), screen)
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y += 1
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}
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}
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func (w *List) Active() bool { return w.active }
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func (w *List) SetActive(a bool) { w.active = a }
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func (w *List) Visible() bool { return w.visible }
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func (w *List) SetVisible(a bool) { w.visible = a }
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func (w *List) SetX(x int) { w.x = x }
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func (w *List) SetY(y int) { w.y = y }
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func (w *List) GetX() int { return w.x }
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func (w *List) GetY() int { return w.y }
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func (w *List) GetPos() Coord { return Coord{X: w.x, Y: w.y} }
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func (w *List) SetPos(c Coord) { w.x, w.y = c.X, c.Y }
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func (w *List) SetW(x int) { w.w = x }
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func (w *List) SetH(y int) { w.h = y }
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func (w *List) GetW() int { return w.w }
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func (w *List) GetH() int { return w.y }
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func (w *List) SetSize(c Coord) { w.w, w.h = c.X, c.Y }
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func (w *List) Focusable() bool { return w.focusable }
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func (w *List) SetTabbable(b bool) { w.tabbable = b }
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func (w *List) Tabbable() bool { return w.tabbable }
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func (w *List) WantW() int {
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lng := wh.Longest(w.list)
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if len(w.border) > 0 {
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return lng + 2
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}
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return lng
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}
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func (w *List) WantH() int {
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lng := len(w.list)
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if len(w.border) > 0 {
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return lng + 2
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}
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return lng
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}
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func (w *List) MinW() int {
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lng := wh.Longest(w.list)
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if lng > 80 {
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lng = 80
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}
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return 2 + lng
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}
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func (w *List) MinH() int { return 4 }
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func (w *List) SetFocusable(f bool) { w.focusable = f }
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func (w *List) SetCursorWrap(b bool) { w.cursorWrap = b }
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func (w *List) MoveUp(ev *tcell.EventKey) bool {
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if w.cursor > 0 {
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w.cursor--
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return true
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} else if w.cursorWrap {
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w.cursor = len(w.list) - 1
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return true
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}
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return false
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}
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func (w *List) MoveDown(ev *tcell.EventKey) bool {
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if w.cursor < len(w.list)-1 {
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w.cursor++
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return true
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} else if w.cursorWrap {
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w.cursor = 0
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return true
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}
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return false
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}
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func (w *List) SetTitle(ttl string) { w.title = ttl }
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func (w *List) SetList(l []string) { w.list = l }
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func (w *List) Add(l string) { w.list = append(w.list, l) }
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func (w *List) Remove(l string) {
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var idx int
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var found bool
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for idx = range w.list {
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if w.list[idx] == l {
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found = true
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break
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}
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}
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if found {
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w.list = append(w.list[:idx], w.list[idx+1:]...)
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}
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}
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func (w *List) SetBorder(brd []rune) {
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if len(brd) == 0 {
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w.border = wh.BRD_SIMPLE
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} else {
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w.border = wh.ValidateBorder(brd)
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}
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}
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func (w *List) SetItemStyle(idx int, s tcell.Style) { w.itemsStyle[idx] = s }
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func (w *List) SetItem(idx int, txt string) {
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if len(w.list) < idx {
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w.list[idx] = txt
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}
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}
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func (w *List) GetIdx() int { return w.cursor }
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func (w *List) ClearBorder() { w.border = []rune{} }
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func (w *List) SetOnSelect(s func(int, string) bool) { w.onSelect = s }
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func (w *List) SetVimMode(b bool) { w.vimMode = b }
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func (w *List) SetLogger(l func(string, ...any)) { w.logger = l }
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func (w *List) Log(txt string, args ...any) {
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if w.logger != nil {
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w.logger(txt, args...)
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}
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}
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