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// gomuks - A terminal Matrix client written in Go.
// Copyright (C) 2018 Tulir Asokan
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package ui
import (
"fmt"
"strconv"
"time"
"maunium.net/go/gomuks/matrix/rooms"
"maunium.net/go/gomuks/ui/widget"
"maunium.net/go/tcell"
"maunium.net/go/tview"
)
type RoomList struct {
*tview.Box
// The list of rooms, in reverse order.
items []*rooms.Room
// The selected room.
selected *rooms.Room
// The item main text color.
mainTextColor tcell.Color
// The text color for selected items.
selectedTextColor tcell.Color
// The background color for selected items.
selectedBackgroundColor tcell.Color
}
func NewRoomList() *RoomList {
return &RoomList{
Box: tview.NewBox(),
items: []*rooms.Room{},
mainTextColor: tcell.ColorWhite,
selectedTextColor: tcell.ColorWhite,
selectedBackgroundColor: tcell.ColorDarkGreen,
}
}
func (list *RoomList) Contains(roomID string) bool {
for _, room := range list.items {
if room.ID == roomID {
return true
}
}
return false
}
func (list *RoomList) Add(room *rooms.Room) {
list.items = append(list.items, nil)
insertAt := len(list.items) - 1
for i := 0; i < len(list.items)-1; i++ {
if list.items[i].LastReceivedMessage.After(room.LastReceivedMessage) {
insertAt = i
break
}
}
for i := len(list.items) - 1; i > insertAt; i-- {
list.items[i] = list.items[i-1]
}
list.items[insertAt] = room
}
func (list *RoomList) Remove(room *rooms.Room) {
index := list.Index(room)
if index != -1 {
list.items = append(list.items[0:index], list.items[index+1:]...)
if room == list.selected {
if index > 0 {
list.selected = list.items[index-1]
} else if len(list.items) > 0 {
list.selected = list.items[0]
} else {
list.selected = nil
}
}
}
}
func (list *RoomList) Bump(room *rooms.Room) {
found := false
for i := 0; i < len(list.items)-1; i++ {
if list.items[i] == room {
found = true
}
if found {
list.items[i] = list.items[i+1]
}
}
list.items[len(list.items)-1] = room
room.LastReceivedMessage = time.Now()
}
func (list *RoomList) Clear() {
list.items = []*rooms.Room{}
list.selected = nil
}
func (list *RoomList) SetSelected(room *rooms.Room) {
list.selected = room
}
func (list *RoomList) HasSelected() bool {
return list.selected != nil
}
func (list *RoomList) Selected() *rooms.Room {
return list.selected
}
func (list *RoomList) Previous() *rooms.Room {
if len(list.items) == 0 {
return nil
} else if list.selected == nil {
return list.items[0]
}
index := list.Index(list.selected)
if index == len(list.items)-1 {
return list.items[0]
}
return list.items[index+1]
}
func (list *RoomList) Next() *rooms.Room {
if len(list.items) == 0 {
return nil
} else if list.selected == nil {
return list.items[0]
}
index := list.Index(list.selected)
if index == 0 {
return list.items[len(list.items)-1]
}
return list.items[index-1]
}
func (list *RoomList) Index(room *rooms.Room) int {
roomIndex := -1
for index, entry := range list.items {
if entry == room {
roomIndex = index
break
}
}
return roomIndex
}
func (list *RoomList) Get(n int) *rooms.Room {
if n < 0 || n > len(list.items)-1 {
return nil
}
return list.items[len(list.items)-1-n]
}
// Draw draws this primitive onto the screen.
func (list *RoomList) Draw(screen tcell.Screen) {
list.Box.Draw(screen)
x, y, width, height := list.GetInnerRect()
bottomLimit := y + height
var offset int
currentItemIndex := list.Index(list.selected)
if currentItemIndex >= height {
offset = currentItemIndex + 1 - height
}
// Draw the list items.
for i := len(list.items) - 1; i >= 0; i-- {
item := list.items[i]
index := len(list.items) - 1 - i
if index < offset {
continue
}
if y >= bottomLimit {
break
}
text := item.GetTitle()
lineWidth := width
style := tcell.StyleDefault.Foreground(list.mainTextColor)
if item == list.selected {
style = style.Foreground(list.selectedTextColor).Background(list.selectedBackgroundColor)
}
if item.HasNewMessages {
style = style.Bold(true)
}
if item.UnreadMessages > 0 {
unreadMessageCount := "99+"
if item.UnreadMessages < 100 {
unreadMessageCount = strconv.Itoa(item.UnreadMessages)
}
if item.Highlighted {
unreadMessageCount += "!"
}
unreadMessageCount = fmt.Sprintf("(%s)", unreadMessageCount)
widget.WriteLine(screen, tview.AlignRight, unreadMessageCount, x+lineWidth-6, y, 6, style)
lineWidth -= len(unreadMessageCount) + 1
}
widget.WriteLine(screen, tview.AlignLeft, text, x, y, lineWidth, style)
y++
if y >= bottomLimit {
break
}
}
}
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