280 lines
6.9 KiB
Go
280 lines
6.9 KiB
Go
/*
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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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"fmt"
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"time"
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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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// Chat is a greedy widget and will consume all of the space you give it.
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type Chat struct {
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id string
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style tcell.Style
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x, y int
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w, h int
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active bool
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visible bool
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tabbable bool
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title string
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rawLog []string
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log []*ChatMsg
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logPosition int
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value string
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cursor int
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history []ChatMsg
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historyPosition int
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keyMap KeyMap
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}
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var _ Widget = (*Chat)(nil)
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func NewChat(id string, s tcell.Style) *Chat {
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ret := &Chat{}
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ret.Init(id, s)
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return ret
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}
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func (w *Chat) Init(id string, s tcell.Style) {
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w.id, w.style = id, s
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w.visible = true
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w.initKeyMap()
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w.tabbable = true
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}
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func (w *Chat) Id() string { return w.id }
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func (w *Chat) HandleResize(ev *tcell.EventResize) {
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w.w, w.h = ev.Size()
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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 *Chat) HandleKey(ev *tcell.EventKey) bool {
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if !w.active {
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return false
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}
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if wh.IsKey(*ev, tcell.KeyEsc) {
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w.SetActive(false)
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return true
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}
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if wh.IsBS(*ev) {
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if w.cursor > 0 {
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w.cursor--
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}
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if w.cursor < len(w.value) {
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w.value = w.value[:w.cursor] + w.value[w.cursor+1:]
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}
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}
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if ok := w.keyMap.Handle(ev); ok {
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return true
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}
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var ch string
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if wh.KeyIsDisplayable(*ev) {
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ch = string(ev.Rune())
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if w.cursor < len(w.value) {
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strPt1 := w.value[:w.cursor]
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strPt2 := w.value[w.cursor:]
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w.value = fmt.Sprintf("%s%s%s", strPt1, ch, strPt2)
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} else {
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w.value = fmt.Sprintf("%s%s", w.value, ch)
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}
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w.cursor++
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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 *Chat) HandleTime(ev *tcell.EventTime) {}
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func (w *Chat) Draw(screen tcell.Screen) {
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if !w.visible {
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return
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}
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dStyle := w.style
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if !w.active {
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dStyle = dStyle.Dim(true)
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}
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if w.title != "" {
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wh.TitledBorderFilled(w.x, w.y, w.x+w.w-1, w.y+w.h, w.title, wh.BRD_SIMPLE, dStyle, screen)
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} else {
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wh.BorderFilled(w.x, w.y, w.x+w.w-1, w.y+w.h, wh.BRD_SIMPLE, dStyle, screen)
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}
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x, y := w.x+1, w.y+1+w.h-3
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for i := 0; i < w.h-2; i++ {
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if len(w.log) > i {
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line := w.log[len(w.log)-i-1].String()
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if len(line) > w.w-2 {
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line = line[:w.w-2]
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}
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wh.DrawText(x, y, wh.PadR(line, w.w), dStyle, screen)
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y--
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}
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}
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y = w.y + w.h - 1
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cursor := " "
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pre := "> "
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var post string
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if len(w.value) > 0 {
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pre = fmt.Sprintf("%s%s", pre, w.value[:w.cursor])
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if w.cursor < len(w.value) {
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cursor = string(w.value[w.cursor])
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post = w.value[w.cursor+1:]
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}
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}
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wh.DrawText(x, y, pre, dStyle, screen)
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x += len(pre)
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wh.DrawText(x, y, cursor, dStyle.Reverse(w.active), screen)
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x += 1
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wh.DrawText(x, y, wh.PadR(post, w.w-x), dStyle, screen)
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// x += len(post) - 1
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}
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func (w *Chat) Active() bool { return w.active }
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func (w *Chat) SetActive(a bool) { w.active = a }
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func (w *Chat) Visible() bool { return w.visible }
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func (w *Chat) SetVisible(a bool) { w.visible = a }
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func (w *Chat) Focusable() bool { return true }
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func (w *Chat) SetTabbable(b bool) { w.tabbable = b }
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func (w *Chat) Tabbable() bool { return w.tabbable }
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func (w *Chat) SetX(x int) { w.x = x }
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func (w *Chat) SetY(y int) { w.y = y }
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func (w *Chat) GetX() int { return w.x }
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func (w *Chat) GetY() int { return w.y }
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func (w *Chat) GetPos() Coord { return Coord{X: w.x, Y: w.y} }
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func (w *Chat) SetPos(c Coord) { w.x, w.y = c.X, c.Y }
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func (w *Chat) GetW() int { return w.w }
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func (w *Chat) GetH() int { return w.h }
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func (w *Chat) SetW(wd int) { w.w = wd }
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func (w *Chat) SetH(h int) { w.h = h }
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func (w *Chat) SetSize(c Coord) { w.w, w.h = c.X, c.Y }
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func (w *Chat) WantW() int { return wh.MaxInt }
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func (w *Chat) WantH() int { return wh.MaxInt }
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func (w *Chat) MinW() int { return 2 + 20 }
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func (w *Chat) MinH() int { return 6 }
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func (w *Chat) initKeyMap() {
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w.keyMap = NewKeyMap(map[tcell.Key]func(ev *tcell.EventKey) bool{
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tcell.KeyEsc: func(ev *tcell.EventKey) bool {
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w.SetActive(false)
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return true
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},
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tcell.KeyUp: func(ev *tcell.EventKey) bool {
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if w.historyPosition < len(w.history)-1 {
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w.historyPosition++
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w.value = w.history[w.historyPosition].Message
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w.cursor = len(w.value)
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return true
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}
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return false
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},
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tcell.KeyDown: func(ev *tcell.EventKey) bool {
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if w.historyPosition > -1 {
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w.historyPosition--
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if w.historyPosition == -1 {
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w.value = ""
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} else {
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w.value = w.history[w.historyPosition].Message
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}
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w.cursor = len(w.value)
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return true
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}
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return false
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},
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tcell.KeyLeft: func(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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}
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return false
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},
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tcell.KeyRight: func(ev *tcell.EventKey) bool {
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if w.cursor < len(w.value) {
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w.cursor++
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return true
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}
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return false
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},
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tcell.KeyCtrlU: func(ev *tcell.EventKey) bool {
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w.value = w.value[w.cursor:]
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w.cursor = 0
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return true
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},
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tcell.KeyTab: func(ev *tcell.EventKey) bool {
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// Auto-complete
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// TODO: Find best guess for current word
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return false
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},
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tcell.KeyEnter: func(ev *tcell.EventKey) bool {
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// TODO: Submit the message
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return false
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},
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})
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}
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func (w *Chat) SetTitle(ttl string) { w.title = ttl }
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func (w *Chat) Title() string { return w.title }
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func (w *Chat) SetValue(val string) {
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w.value = val
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w.cursor = len(val)
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}
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func (w *Chat) Log(msg *ChatMsg) {
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w.rawLog = append(w.rawLog, msg.String())
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w.log = append(w.log, msg)
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}
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func (w *Chat) Clear() {
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w.rawLog = []string{}
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w.log = []*ChatMsg{}
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}
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const (
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MsgChat = iota
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MsgSystem
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)
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type ChatMsg struct {
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MsgType int
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MsgTime time.Time
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FromName string
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Message string
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}
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func (c ChatMsg) String() string {
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if c.MsgType == MsgChat {
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from := c.FromName
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if from == "" {
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from = "Unknown"
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}
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return fmt.Sprintf("%s <%s> %s", c.MsgTime.Format("15:04"), from, c.Message)
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}
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return fmt.Sprintf("%s", c.Message)
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}
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