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Diffstat (limited to 'ui')
-rw-r--r--ui/debug/debug.go83
-rw-r--r--ui/types/message.go85
-rw-r--r--ui/ui.go65
-rw-r--r--ui/view-login.go53
-rw-r--r--ui/view-main.go387
-rw-r--r--ui/widget/advanced-inputfield.go445
-rw-r--r--ui/widget/border.go44
-rw-r--r--ui/widget/center.go32
-rw-r--r--ui/widget/color.go60
-rw-r--r--ui/widget/form-text-view.go44
-rw-r--r--ui/widget/message-view.go293
-rw-r--r--ui/widget/room-view.go152
12 files changed, 1743 insertions, 0 deletions
diff --git a/ui/debug/debug.go b/ui/debug/debug.go
new file mode 100644
index 0000000..c855897
--- /dev/null
+++ b/ui/debug/debug.go
@@ -0,0 +1,83 @@
+// 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 debug
+
+import (
+ "fmt"
+
+ "maunium.net/go/tview"
+)
+
+type Printer interface {
+ Printf(text string, args ...interface{})
+ Print(text ...interface{})
+}
+
+type Pane struct {
+ *tview.TextView
+ Height int
+ num int
+}
+
+var Default Printer
+
+func NewPane() *Pane {
+ pane := tview.NewTextView()
+ pane.
+ SetScrollable(true).
+ SetWrap(true).
+ SetBorder(true).
+ SetTitle("Debug output")
+ fmt.Fprintln(pane, "[0] Debug pane initialized")
+
+ return &Pane{
+ TextView: pane,
+ Height: 35,
+ num: 0,
+ }
+}
+
+func (db *Pane) Printf(text string, args ...interface{}) {
+ db.WriteString(fmt.Sprintf(text, args...) + "\n")
+}
+
+func (db *Pane) Print(text ...interface{}) {
+ db.WriteString(fmt.Sprintln(text...))
+}
+
+func (db *Pane) WriteString(text string) {
+ db.num++
+ fmt.Fprintf(db, "[%d] %s", db.num, text)
+}
+
+func (db *Pane) Wrap(main tview.Primitive) tview.Primitive {
+ return tview.NewGrid().SetRows(0, db.Height).SetColumns(0).
+ AddItem(main, 0, 0, 1, 1, 1, 1, true).
+ AddItem(db, 1, 0, 1, 1, 1, 1, false)
+}
+
+func Printf(text string, args ...interface{}) {
+ if Default != nil {
+ Default.Printf(text, args...)
+ }
+}
+
+func Print(text ...interface{}) {
+ if Default != nil {
+ Default.Print(text...)
+ }
+}
diff --git a/ui/types/message.go b/ui/types/message.go
new file mode 100644
index 0000000..b69eab2
--- /dev/null
+++ b/ui/types/message.go
@@ -0,0 +1,85 @@
+// 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 types
+
+import (
+ "regexp"
+ "strings"
+
+ "github.com/gdamore/tcell"
+ "github.com/mattn/go-runewidth"
+)
+
+type Message struct {
+ ID string
+ Sender string
+ Text string
+ Timestamp string
+ Date string
+
+ Buffer []string
+ SenderColor tcell.Color
+}
+
+func NewMessage(id, sender, text, timestamp, date string, senderColor tcell.Color) *Message {
+ return &Message{
+ ID: id,
+ Sender: sender,
+ Text: text,
+ Timestamp: timestamp,
+ Date: date,
+ SenderColor: senderColor,
+ }
+}
+
+var (
+ boundaryPattern = regexp.MustCompile("([[:punct:]]\\s*|\\s+)")
+ spacePattern = regexp.MustCompile(`\s+`)
+)
+
+func (message *Message) CalculateBuffer(width int) {
+ if width < 1 {
+ return
+ }
+ message.Buffer = []string{}
+ forcedLinebreaks := strings.Split(message.Text, "\n")
+ newlines := 0
+ for _, str := range forcedLinebreaks {
+ if len(str) == 0 && newlines < 1 {
+ message.Buffer = append(message.Buffer, "")
+ newlines++
+ } else {
+ newlines = 0
+ }
+ // From tview/textview.go#reindexBuffer()
+ for len(str) > 0 {
+ extract := runewidth.Truncate(str, width, "")
+ if len(extract) < len(str) {
+ if spaces := spacePattern.FindStringIndex(str[len(extract):]); spaces != nil && spaces[0] == 0 {
+ extract = str[:len(extract)+spaces[1]]
+ }
+
+ matches := boundaryPattern.FindAllStringIndex(extract, -1)
+ if len(matches) > 0 {
+ extract = extract[:matches[len(matches)-1][1]]
+ }
+ }
+ message.Buffer = append(message.Buffer, extract)
+ str = str[len(extract):]
+ }
+ }
+}
diff --git a/ui/ui.go b/ui/ui.go
new file mode 100644
index 0000000..eab7642
--- /dev/null
+++ b/ui/ui.go
@@ -0,0 +1,65 @@
+// 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 (
+ "github.com/gdamore/tcell"
+ "maunium.net/go/gomuks/interface"
+ "maunium.net/go/tview"
+)
+
+type GomuksUI struct {
+ gmx ifc.Gomuks
+ app *tview.Application
+ views *tview.Pages
+
+ mainView *MainView
+ loginView *tview.Form
+}
+
+func init() {
+ tview.Styles.PrimitiveBackgroundColor = tcell.ColorDefault
+ tview.Styles.ContrastBackgroundColor = tcell.ColorDarkGreen
+}
+
+func NewGomuksUI(gmx ifc.Gomuks) (ui *GomuksUI) {
+ ui = &GomuksUI{
+ gmx: gmx,
+ app: gmx.App(),
+ views: tview.NewPages(),
+ }
+ ui.views.SetChangedFunc(ui.Render)
+ return
+}
+
+func (ui *GomuksUI) Render() {
+ ui.app.Draw()
+}
+
+func (ui *GomuksUI) SetView(name ifc.View) {
+ ui.views.SwitchToPage(string(name))
+}
+
+func (ui *GomuksUI) InitViews() tview.Primitive {
+ ui.views.AddPage(string(ifc.ViewLogin), ui.NewLoginView(), true, true)
+ ui.views.AddPage(string(ifc.ViewMain), ui.NewMainView(), true, false)
+ return ui.views
+}
+
+func (ui *GomuksUI) MainView() ifc.MainView {
+ return ui.mainView
+}
diff --git a/ui/view-login.go b/ui/view-login.go
new file mode 100644
index 0000000..2a19d3b
--- /dev/null
+++ b/ui/view-login.go
@@ -0,0 +1,53 @@
+// 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 (
+ "maunium.net/go/gomuks/ui/debug"
+ "maunium.net/go/gomuks/ui/widget"
+ "maunium.net/go/tview"
+)
+
+func (ui *GomuksUI) NewLoginView() tview.Primitive {
+ hs := ui.gmx.Config().HS
+ if len(hs) == 0 {
+ hs = "https://matrix.org"
+ }
+
+ ui.loginView = tview.NewForm()
+ ui.loginView.
+ AddInputField("Homeserver", hs, 30, nil, nil).
+ AddInputField("Username", ui.gmx.Config().MXID, 30, nil, nil).
+ AddPasswordField("Password", "", 30, '*', nil).
+ AddButton("Log in", ui.login).
+ AddButton("Quit", ui.gmx.Stop).
+ SetButtonsAlign(tview.AlignCenter).
+ SetBorder(true).SetTitle("Log in to Matrix")
+ return widget.Center(45, 11, ui.loginView)
+}
+
+func (ui *GomuksUI) login() {
+ hs := ui.loginView.GetFormItem(0).(*tview.InputField).GetText()
+ mxid := ui.loginView.GetFormItem(1).(*tview.InputField).GetText()
+ password := ui.loginView.GetFormItem(2).(*tview.InputField).GetText()
+
+ debug.Printf("Logging into %s as %s...", hs, mxid)
+ ui.gmx.Config().HS = hs
+ mx := ui.gmx.MatrixContainer()
+ debug.Print("Connect result:", mx.InitClient())
+ debug.Print("Login result:", mx.Login(mxid, password))
+}
diff --git a/ui/view-main.go b/ui/view-main.go
new file mode 100644
index 0000000..8ec482e
--- /dev/null
+++ b/ui/view-main.go
@@ -0,0 +1,387 @@
+// 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"
+ "sort"
+ "strings"
+ "time"
+ "unicode"
+
+ "github.com/gdamore/tcell"
+ "github.com/mattn/go-runewidth"
+ "maunium.net/go/gomatrix"
+ "maunium.net/go/gomuks/config"
+ "maunium.net/go/gomuks/interface"
+ "maunium.net/go/gomuks/ui/debug"
+ "maunium.net/go/gomuks/ui/types"
+ "maunium.net/go/gomuks/ui/widget"
+ "maunium.net/go/tview"
+)
+
+type MainView struct {
+ *tview.Grid
+
+ roomList *tview.List
+ roomView *tview.Pages
+ rooms map[string]*widget.RoomView
+ input *widget.AdvancedInputField
+ currentRoomIndex int
+ roomIDs []string
+
+ matrix ifc.MatrixContainer
+ gmx ifc.Gomuks
+ config *config.Config
+ parent *GomuksUI
+}
+
+func (view *MainView) addItem(p tview.Primitive, x, y, w, h int) {
+ view.Grid.AddItem(p, x, y, w, h, 0, 0, false)
+}
+
+func (ui *GomuksUI) NewMainView() tview.Primitive {
+ mainView := &MainView{
+ Grid: tview.NewGrid(),
+ roomList: tview.NewList(),
+ roomView: tview.NewPages(),
+ rooms: make(map[string]*widget.RoomView),
+ input: widget.NewAdvancedInputField(),
+
+ matrix: ui.gmx.MatrixContainer(),
+ gmx: ui.gmx,
+ config: ui.gmx.Config(),
+ parent: ui,
+ }
+
+ mainView.SetColumns(30, 1, 0).SetRows(0, 1)
+
+ mainView.roomList.
+ ShowSecondaryText(false).
+ SetSelectedBackgroundColor(tcell.ColorDarkGreen).
+ SetSelectedTextColor(tcell.ColorWhite).
+ SetBorderPadding(0, 0, 1, 0)
+
+ mainView.input.
+ SetDoneFunc(mainView.InputDone).
+ SetChangedFunc(mainView.InputChanged).
+ SetTabCompleteFunc(mainView.InputTabComplete).
+ SetFieldBackgroundColor(tcell.ColorDefault).
+ SetPlaceholder("Send a message...").
+ SetPlaceholderExtColor(tcell.ColorGray).
+ SetInputCapture(mainView.InputCapture)
+
+ mainView.addItem(mainView.roomList, 0, 0, 2, 1)
+ mainView.addItem(widget.NewBorder(), 0, 1, 2, 1)
+ mainView.addItem(mainView.roomView, 0, 2, 1, 1)
+ mainView.AddItem(mainView.input, 1, 2, 1, 1, 0, 0, true)
+
+ ui.mainView = mainView
+
+ return mainView
+}
+
+func (view *MainView) InputChanged(text string) {
+ if len(text) == 0 {
+ go view.matrix.SendTyping(view.CurrentRoomID(), false)
+ } else if text[0] != '/' {
+ go view.matrix.SendTyping(view.CurrentRoomID(), true)
+ }
+}
+
+func findWordToTabComplete(text string) string {
+ output := ""
+ runes := []rune(text)
+ for i := len(runes) - 1; i >= 0; i-- {
+ if unicode.IsSpace(runes[i]) {
+ break
+ }
+ output = string(runes[i]) + output
+ }
+ return output
+}
+
+func (view *MainView) InputTabComplete(text string, cursorOffset int) string {
+ roomView, _ := view.rooms[view.CurrentRoomID()]
+ if roomView != nil {
+ str := runewidth.Truncate(text, cursorOffset, "")
+ word := findWordToTabComplete(str)
+ userCompletions := roomView.AutocompleteUser(word)
+ if len(userCompletions) == 1 {
+ text = str[0:len(str)-len(word)] + userCompletions[0] + text[len(str):]
+ } else if len(userCompletions) > 1 && len(userCompletions) < 6 {
+ roomView.SetStatus(fmt.Sprintf("Completions: %s", strings.Join(userCompletions, ", ")))
+ }
+ }
+ return text
+}
+
+func (view *MainView) InputDone(key tcell.Key) {
+ if key == tcell.KeyEnter {
+ room, text := view.CurrentRoomID(), view.input.GetText()
+ if len(text) == 0 {
+ return
+ } else if text[0] == '/' {
+ args := strings.SplitN(text, " ", 2)
+ command := strings.ToLower(args[0])
+ args = args[1:]
+ go view.HandleCommand(room, command, args)
+ } else {
+ go view.matrix.SendMessage(room, text)
+ }
+ view.input.SetText("")
+ }
+}
+
+func (view *MainView) HandleCommand(room, command string, args []string) {
+ view.gmx.Recover()
+ debug.Print("Handling command", command, args)
+ switch command {
+ case "/quit":
+ view.gmx.Stop()
+ case "/clearcache":
+ view.config.Session.Clear()
+ view.gmx.Stop()
+ case "/part":
+ fallthrough
+ case "/leave":
+ debug.Print(view.matrix.LeaveRoom(room))
+ case "/join":
+ if len(args) == 0 {
+ view.AddServiceMessage(room, "Usage: /join <room>")
+ break
+ }
+ debug.Print(view.matrix.JoinRoom(args[0]))
+ default:
+ view.AddServiceMessage(room, "Unknown command.")
+ }
+}
+
+func (view *MainView) InputCapture(key *tcell.EventKey) *tcell.EventKey {
+ k := key.Key()
+ if key.Modifiers() == tcell.ModCtrl {
+ if k == tcell.KeyDown {
+ view.SwitchRoom(view.currentRoomIndex + 1)
+ view.roomList.SetCurrentItem(view.currentRoomIndex)
+ } else if k == tcell.KeyUp {
+ view.SwitchRoom(view.currentRoomIndex - 1)
+ view.roomList.SetCurrentItem(view.currentRoomIndex)
+ } else {
+ return key
+ }
+ } else if k == tcell.KeyPgUp || k == tcell.KeyPgDn {
+ msgView := view.rooms[view.CurrentRoomID()].MessageView()
+ if k == tcell.KeyPgUp {
+ msgView.PageUp()
+ } else {
+ msgView.PageDown()
+ }
+ } else {
+ return key
+ }
+ return nil
+}
+
+func (view *MainView) CurrentRoomID() string {
+ if len(view.roomIDs) == 0 {
+ return ""
+ }
+ return view.roomIDs[view.currentRoomIndex]
+}
+
+func (view *MainView) SwitchRoom(roomIndex int) {
+ if roomIndex < 0 {
+ roomIndex = len(view.roomIDs) - 1
+ }
+ view.currentRoomIndex = roomIndex % len(view.roomIDs)
+ view.roomView.SwitchToPage(view.CurrentRoomID())
+ view.roomList.SetCurrentItem(roomIndex)
+ view.parent.Render()
+}
+
+func (view *MainView) addRoom(index int, room string) {
+ roomStore := view.matrix.GetRoom(room)
+
+ view.roomList.AddItem(roomStore.GetTitle(), "", 0, func() {
+ view.SwitchRoom(index)
+ })
+ if !view.roomView.HasPage(room) {
+ roomView := widget.NewRoomView(view, roomStore)
+ view.rooms[room] = roomView
+ view.roomView.AddPage(room, roomView, true, false)
+ roomView.UpdateUserList()
+ view.GetHistory(room)
+ }
+}
+
+func (view *MainView) GetRoom(id string) *widget.RoomView {
+ return view.rooms[id]
+}
+
+func (view *MainView) HasRoom(room string) bool {
+ for _, existingRoom := range view.roomIDs {
+ if existingRoom == room {
+ return true
+ }
+ }
+ return false
+}
+
+func (view *MainView) AddRoom(room string) {
+ if view.HasRoom(room) {
+ return
+ }
+ view.roomIDs = append(view.roomIDs, room)
+ view.addRoom(len(view.roomIDs)-1, room)
+}
+
+func (view *MainView) RemoveRoom(room string) {
+ if !view.HasRoom(room) {
+ return
+ }
+ removeIndex := 0
+ if view.CurrentRoomID() == room {
+ removeIndex = view.currentRoomIndex
+ view.SwitchRoom(view.currentRoomIndex - 1)
+ } else {
+ removeIndex = sort.StringSlice(view.roomIDs).Search(room)
+ }
+ view.roomList.RemoveItem(removeIndex)
+ view.roomIDs = append(view.roomIDs[:removeIndex], view.roomIDs[removeIndex+1:]...)
+ view.roomView.RemovePage(room)
+ delete(view.rooms, room)
+ view.Render()
+}
+
+func (view *MainView) SetRooms(rooms []string) {
+ view.roomIDs = rooms
+ view.roomList.Clear()
+ view.roomView.Clear()
+ view.rooms = make(map[string]*widget.RoomView)
+ for index, room := range rooms {
+ view.addRoom(index, room)
+ }
+ view.SwitchRoom(0)
+}
+
+func (view *MainView) SetTyping(room string, users []string) {
+ roomView, ok := view.rooms[room]
+ if ok {
+ roomView.SetTyping(users)
+ view.parent.Render()
+ }
+}
+
+func (view *MainView) AddServiceMessage(room, message string) {
+ roomView, ok := view.rooms[room]
+ if ok {
+ messageView := roomView.MessageView()
+ message := messageView.NewMessage("", "*", message, time.Now())
+ messageView.AddMessage(message, widget.AppendMessage)
+ view.parent.Render()
+ }
+}
+
+func (view *MainView) Render() {
+ view.parent.Render()
+}
+
+func (view *MainView) GetHistory(room string) {
+ roomView := view.rooms[room]
+ history, _, err := view.matrix.GetHistory(roomView.Room.ID, view.config.Session.NextBatch, 50)
+ if err != nil {
+ debug.Print("Failed to fetch history for", roomView.Room.ID, err)
+ return
+ }
+ for _, evt := range history {
+ var room *widget.RoomView
+ var message *types.Message
+ if evt.Type == "m.room.message" {
+ room, message = view.ProcessMessageEvent(&evt)
+ } else if evt.Type == "m.room.member" {
+ room, message = view.ProcessMembershipEvent(&evt, false)
+ }
+ if room != nil && message != nil {
+ room.AddMessage(message, widget.PrependMessage)
+ }
+ }
+}
+
+func (view *MainView) ProcessMessageEvent(evt *gomatrix.Event) (room *widget.RoomView, message *types.Message) {
+ room = view.GetRoom(evt.RoomID)
+ if room != nil {
+ text, _ := evt.Content["body"].(string)
+ message = room.NewMessage(evt.ID, evt.Sender, text, unixToTime(evt.Timestamp))
+ }
+ return
+}
+
+func (view *MainView) processOwnMembershipChange(evt *gomatrix.Event) {
+ membership, _ := evt.Content["membership"].(string)
+ prevMembership := "leave"
+ if evt.Unsigned.PrevContent != nil {
+ prevMembership, _ = evt.Unsigned.PrevContent["membership"].(string)
+ }
+ if membership == prevMembership {
+ return
+ }
+ if membership == "join" {
+ view.AddRoom(evt.RoomID)
+ } else if membership == "leave" {
+ view.RemoveRoom(evt.RoomID)
+ }
+}
+
+func (view *MainView) ProcessMembershipEvent(evt *gomatrix.Event, new bool) (room *widget.RoomView, message *types.Message) {
+ if new && evt.StateKey != nil && *evt.StateKey == view.config.Session.MXID {
+ view.processOwnMembershipChange(evt)
+ }
+
+ room = view.GetRoom(evt.RoomID)
+ if room != nil {
+ membership, _ := evt.Content["membership"].(string)
+ var sender, text string
+ if membership == "invite" {
+ sender = "---"
+ text = fmt.Sprintf("%s invited %s.", evt.Sender, *evt.StateKey)
+ } else if membership == "join" {
+ sender = "-->"
+ text = fmt.Sprintf("%s joined the room.", *evt.StateKey)
+ } else if membership == "leave" {
+ sender = "<--"
+ if evt.Sender != *evt.StateKey {
+ reason, _ := evt.Content["reason"].(string)
+ text = fmt.Sprintf("%s kicked %s: %s", evt.Sender, *evt.StateKey, reason)
+ } else {
+ text = fmt.Sprintf("%s left the room.", *evt.StateKey)
+ }
+ } else {
+ room = nil
+ return
+ }
+ message = room.NewMessage(evt.ID, sender, text, unixToTime(evt.Timestamp))
+ }
+ return
+}
+
+func unixToTime(unix int64) time.Time {
+ timestamp := time.Now()
+ if unix != 0 {
+ timestamp = time.Unix(unix/1000, unix%1000*1000)
+ }
+ return timestamp
+}
diff --git a/ui/widget/advanced-inputfield.go b/ui/widget/advanced-inputfield.go
new file mode 100644
index 0000000..6928c27
--- /dev/null
+++ b/ui/widget/advanced-inputfield.go
@@ -0,0 +1,445 @@
+// 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 widget
+
+import (
+ "math"
+ "regexp"
+ "strings"
+ "unicode/utf8"
+
+ "github.com/gdamore/tcell"
+ "github.com/mattn/go-runewidth"
+ "github.com/zyedidia/clipboard"
+ "maunium.net/go/tview"
+)
+
+// AdvancedInputField is a multi-line user-editable text area.
+//
+// Use SetMaskCharacter() to hide input from onlookers (e.g. for password
+// input).
+type AdvancedInputField struct {
+ *tview.Box
+
+ // Cursor position
+ cursorOffset int
+ viewOffset int
+
+ // The text that was entered.
+ text string
+
+ // The text to be displayed before the input area.
+ label string
+
+ // The text to be displayed in the input area when "text" is empty.
+ placeholder string
+
+ // The label color.
+ labelColor tcell.Color
+
+ // The background color of the input area.
+ fieldBackgroundColor tcell.Color
+
+ // The text color of the input area.
+ fieldTextColor tcell.Color
+
+ // The text color of the placeholder.
+ placeholderTextColor tcell.Color
+
+ // The screen width of the input area. A value of 0 means extend as much as
+ // possible.
+ fieldWidth int
+
+ // A character to mask entered text (useful for password fields). A value of 0
+ // disables masking.
+ maskCharacter rune
+
+ // An optional function which may reject the last character that was entered.
+ accept func(text string, ch rune) bool
+
+ // An optional function which is called when the input has changed.
+ changed func(text string)
+
+ // An optional function which is called when the user indicated that they
+ // are done entering text. The key which was pressed is provided (enter or escape).
+ done func(tcell.Key)
+
+ // An optional function which is called when the user presses tab.
+ tabComplete func(text string, cursorOffset int) string
+}
+
+// NewAdvancedInputField returns a new input field.
+func NewAdvancedInputField() *AdvancedInputField {
+ return &AdvancedInputField{
+ Box: tview.NewBox(),
+ labelColor: tview.Styles.SecondaryTextColor,
+ fieldBackgroundColor: tview.Styles.ContrastBackgroundColor,
+ fieldTextColor: tview.Styles.PrimaryTextColor,
+ placeholderTextColor: tview.Styles.ContrastSecondaryTextColor,
+ }
+}
+
+// SetText sets the current text of the input field.
+func (field *AdvancedInputField) SetText(text string) *AdvancedInputField {
+ field.text = text
+ if field.changed != nil {
+ field.changed(text)
+ }
+ return field
+}
+
+// GetText returns the current text of the input field.
+func (field *AdvancedInputField) GetText() string {
+ return field.text
+}
+
+// SetLabel sets the text to be displayed before the input area.
+func (field *AdvancedInputField) SetLabel(label string) *AdvancedInputField {
+ field.label = label
+ return field
+}
+
+// GetLabel returns the text to be displayed before the input area.
+func (field *AdvancedInputField) GetLabel() string {
+ return field.label
+}
+
+// SetPlaceholder sets the text to be displayed when the input text is empty.
+func (field *AdvancedInputField) SetPlaceholder(text string) *AdvancedInputField {
+ field.placeholder = text
+ return field
+}
+
+// SetLabelColor sets the color of the label.
+func (field *AdvancedInputField) SetLabelColor(color tcell.Color) *AdvancedInputField {
+ field.labelColor = color
+ return field
+}
+
+// SetFieldBackgroundColor sets the background color of the input area.
+func (field *AdvancedInputField) SetFieldBackgroundColor(color tcell.Color) *AdvancedInputField {
+ field.fieldBackgroundColor = color
+ return field
+}
+
+// SetFieldTextColor sets the text color of the input area.
+func (field *AdvancedInputField) SetFieldTextColor(color tcell.Color) *AdvancedInputField {
+ field.fieldTextColor = color
+ return field
+}
+
+// SetPlaceholderExtColor sets the text color of placeholder text.
+func (field *AdvancedInputField) SetPlaceholderExtColor(color tcell.Color) *AdvancedInputField {
+ field.placeholderTextColor = color
+ return field
+}
+
+// SetFormAttributes sets attributes shared by all form items.
+func (field *AdvancedInputField) SetFormAttributes(label string, labelColor, bgColor, fieldTextColor, fieldBgColor tcell.Color) tview.FormItem {
+ field.label = label
+ field.labelColor = labelColor
+ field.SetBackgroundColor(bgColor)
+ field.fieldTextColor = fieldTextColor
+ field.fieldBackgroundColor = fieldBgColor
+ return field
+}
+
+// SetFieldWidth sets the screen width of the input area. A value of 0 means
+// extend as much as possible.
+func (field *AdvancedInputField) SetFieldWidth(width int) *AdvancedInputField {
+ field.fieldWidth = width
+ return field
+}
+
+// GetFieldWidth returns this primitive's field width.
+func (field *AdvancedInputField) GetFieldWidth() int {
+ return field.fieldWidth
+}
+
+// SetMaskCharacter sets a character that masks user input on a screen. A value
+// of 0 disables masking.
+func (field *AdvancedInputField) SetMaskCharacter(mask rune) *AdvancedInputField {
+ field.maskCharacter = mask
+ return field
+}
+
+// SetAcceptanceFunc sets a handler which may reject the last character that was
+// entered (by returning false).
+//
+// This package defines a number of variables Prefixed with AdvancedInputField which may
+// be used for common input (e.g. numbers, maximum text length).
+func (field *AdvancedInputField) SetAcceptanceFunc(handler func(textToCheck string, lastChar rune) bool) *AdvancedInputField {
+ field.accept = handler
+ return field
+}
+
+// SetChangedFunc sets a handler which is called whenever the text of the input
+// field has changed. It receives the current text (after the change).
+func (field *AdvancedInputField) SetChangedFunc(handler func(text string)) *AdvancedInputField {
+ field.changed = handler
+ return field
+}
+
+// SetDoneFunc sets a handler which is called when the user is done entering
+// text. The callback function is provided with the key that was pressed, which
+// is one of the following:
+//
+// - KeyEnter: Done entering text.
+// - KeyEscape: Abort text input.
+func (field *AdvancedInputField) SetDoneFunc(handler func(key tcell.Key)) *AdvancedInputField {
+ field.done = handler
+ return field
+}
+
+func (field *AdvancedInputField) SetTabCompleteFunc(handler func(text string, cursorOffset int) string) *AdvancedInputField {
+ field.tabComplete = handler
+ return field
+}
+
+// SetFinishedFunc calls SetDoneFunc().
+func (field *AdvancedInputField) SetFinishedFunc(handler func(key tcell.Key)) tview.FormItem {
+ return field.SetDoneFunc(handler)
+}
+
+// Draw draws this primitive onto the screen.
+func (field *AdvancedInputField) Draw(screen tcell.Screen) {
+ field.Box.Draw(screen)
+
+ // Prepare
+ x, y, width, height := field.GetInnerRect()
+ rightLimit := x + width
+ if height < 1 || rightLimit <= x {
+ return
+ }
+
+ // Draw label.
+ _, drawnWidth := tview.Print(screen, field.label, x, y, rightLimit-x, tview.AlignLeft, field.labelColor)
+ x += drawnWidth
+
+ // Draw input area.
+ fieldWidth := field.fieldWidth
+ if fieldWidth == 0 {
+ fieldWidth = math.MaxInt32
+ }
+ if rightLimit-x < fieldWidth {
+ fieldWidth = rightLimit - x
+ }
+ fieldStyle := tcell.StyleDefault.Background(field.fieldBackgroundColor)
+ for index := 0; index < fieldWidth; index++ {
+ screen.SetContent(x+index, y, ' ', nil, fieldStyle)
+ }
+
+ text := field.text
+ if text == "" && field.placeholder != "" {
+ tview.Print(screen, field.placeholder, x, y, fieldWidth, tview.AlignLeft, field.placeholderTextColor)
+ }
+
+ // Draw entered text.
+ if field.maskCharacter > 0 {
+ text = strings.Repeat(string(field.maskCharacter), utf8.RuneCountInString(field.text))
+ }
+ textWidth := runewidth.StringWidth(text)
+ if field.cursorOffset >= textWidth {
+ fieldWidth--
+ }
+
+ // Recalculate view offset
+ if field.cursorOffset < field.viewOffset {
+ field.viewOffset = field.cursorOffset
+ } else if field.cursorOffset > field.viewOffset+fieldWidth {
+ field.viewOffset = field.cursorOffset - fieldWidth
+ } else if textWidth-field.viewOffset < fieldWidth {
+ field.viewOffset = textWidth - fieldWidth
+ }
+ // Make sure view offset didn't become negative
+ if field.viewOffset < 0 {
+ field.viewOffset = 0
+ }
+
+ // Draw entered text.
+ runes := []rune(text)
+ relPos := 0
+ for pos := field.viewOffset; pos <= fieldWidth+field.viewOffset && pos < len(runes); pos++ {
+ ch := runes[pos]
+ w := runewidth.RuneWidth(ch)
+ _, _, style, _ := screen.GetContent(x+relPos, y)
+ style = style.Foreground(field.fieldTextColor)
+ for w > 0 {
+ screen.SetContent(x+relPos, y, ch, nil, style)
+ relPos++
+ w--
+ }
+ }
+
+ // Set cursor.
+ if field.GetFocusable().HasFocus() {
+ field.setCursor(screen)
+ }
+}
+
+func (field *AdvancedInputField) GetCursorOffset() int {
+ return field.cursorOffset
+}
+
+func (field *AdvancedInputField) SetCursorOffset(offset int) *AdvancedInputField {
+ if offset < 0 {
+ offset = 0
+ } else {
+ width := runewidth.StringWidth(field.text)
+ if offset >= width {
+ offset = width
+ }
+ }
+ field.cursorOffset = offset
+ return field
+}
+
+// setCursor sets the cursor position.
+func (field *AdvancedInputField) setCursor(screen tcell.Screen) {
+ x, y, width, _ := field.GetRect()
+ origX, origY := x, y
+ rightLimit := x + width
+ if field.HasBorder() {
+ x++
+ y++
+ rightLimit -= 2
+ }
+ fieldWidth := runewidth.StringWidth(field.text)
+ if field.fieldWidth > 0 && fieldWidth > field.fieldWidth-1 {
+ fieldWidth = field.fieldWidth - 1
+ }
+ x = x + tview.StringWidth(field.label) + field.cursorOffset - field.viewOffset
+ if x >= rightLimit {
+ x = rightLimit - 1
+ } else if x < origX {
+ x = origY
+ }
+ screen.ShowCursor(x, y)
+}
+
+var (
+ lastWord = regexp.MustCompile(`\S+\s*$`)
+ firstWord = regexp.MustCompile(`^\s*\S+`)
+)
+
+func SubstringBefore(s string, w int) string {
+ return runewidth.Truncate(s, w, "")
+}
+
+// InputHandler returns the handler for this primitive.
+func (field *AdvancedInputField) InputHandler() func(event *tcell.EventKey, setFocus func(p tview.Primitive)) {
+ return field.WrapInputHandler(func(event *tcell.EventKey, setFocus func(p tview.Primitive)) {
+ currentText := field.text
+ defer func() {
+ // Trigger changed events.
+ if field.text != currentText && field.changed != nil {
+ field.changed(field.text)
+ }
+ // Make sure cursor offset is valid
+ if field.cursorOffset < 0 {
+ field.cursorOffset = 0
+ }
+ width := runewidth.StringWidth(field.text)
+ if field.cursorOffset > width {
+ field.cursorOffset = width
+ }
+ }()
+
+ // Process key event.
+ switch key := event.Key(); key {
+ case tcell.KeyRune: // Regular character.
+ leftPart := SubstringBefore(field.text, field.cursorOffset)
+ newText := leftPart + string(event.Rune()) + field.text[len(leftPart):]
+ if field.accept != nil {
+ if !field.accept(newText, event.Rune()) {
+ break
+ }
+ }
+ field.text = newText
+ field.cursorOffset += runewidth.RuneWidth(event.Rune())
+ case tcell.KeyCtrlV:
+ clip, _ := clipboard.ReadAll("clipboard")
+ leftPart := SubstringBefore(field.text, field.cursorOffset)
+ field.text = leftPart + clip + field.text[len(leftPart):]
+ field.cursorOffset += runewidth.StringWidth(clip)
+ case tcell.KeyLeft: // Move cursor left.
+ before := SubstringBefore(field.text, field.cursorOffset)
+ if event.Modifiers() == tcell.ModCtrl {
+ found := lastWord.FindString(before)
+ field.cursorOffset -= runewidth.StringWidth(found)
+ } else if len(before) > 0 {
+ beforeRunes := []rune(before)
+ char := beforeRunes[len(beforeRunes)-1]
+ field.cursorOffset -= runewidth.RuneWidth(char)
+ }
+ case tcell.KeyRight: // Move cursor right.
+ before := SubstringBefore(field.text, field.cursorOffset)
+ after := field.text[len(before):]
+ if event.Modifiers() == tcell.ModCtrl {
+ found := firstWord.FindString(after)
+ field.cursorOffset += runewidth.StringWidth(found)
+ } else if len(after) > 0 {
+ char := []rune(after)[0]
+ field.cursorOffset += runewidth.RuneWidth(char)
+ }
+ case tcell.KeyDelete: // Delete next character.
+ if field.cursorOffset >= runewidth.StringWidth(field.text) {
+ break
+ }
+ leftPart := SubstringBefore(field.text, field.cursorOffset)
+ rightPart := field.text[len(leftPart):]
+ rightPartRunes := []rune(rightPart)
+ rightPartRunes = rightPartRunes[1:]
+ rightPart = string(rightPartRunes)
+ field.text = leftPart + rightPart
+ case tcell.KeyBackspace, tcell.KeyBackspace2: // Delete last character.
+ if field.cursorOffset == 0 {
+ break
+ }
+ if key == tcell.KeyBackspace { // Ctrl+backspace
+ leftPart := SubstringBefore(field.text, field.cursorOffset)
+ rightPart := field.text[len(leftPart):]
+ replacement := lastWord.ReplaceAllString(leftPart, "")
+ field.text = replacement + rightPart
+
+ field.cursorOffset -= runewidth.StringWidth(leftPart) - runewidth.StringWidth(replacement)
+ } else { // Just backspace
+ leftPart := SubstringBefore(field.text, field.cursorOffset)
+ rightPart := field.text[len(leftPart):]
+ leftPartRunes := []rune(leftPart)
+ leftPartRunes = leftPartRunes[0 : len(leftPartRunes)-1]
+ leftPart = string(leftPartRunes)
+ removedChar := field.text[len(leftPart) : len(field.text)-len(rightPart)]
+ field.text = leftPart + rightPart
+ field.cursorOffset -= runewidth.StringWidth(removedChar)
+ }
+ case tcell.KeyTab: // Tab-completion
+ if field.tabComplete != nil {
+ oldWidth := runewidth.StringWidth(field.text)
+ field.text = field.tabComplete(field.text, field.cursorOffset)
+ newWidth := runewidth.StringWidth(field.text)
+ if oldWidth != newWidth {
+ field.cursorOffset += newWidth - oldWidth
+ }
+ }
+ case tcell.KeyEnter, tcell.KeyEscape: // We're done.
+ if field.done != nil {
+ field.done(key)
+ }
+ }
+ })
+}
diff --git a/ui/widget/border.go b/ui/widget/border.go
new file mode 100644
index 0000000..a32f4dd
--- /dev/null
+++ b/ui/widget/border.go
@@ -0,0 +1,44 @@
+// 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 widget
+
+import (
+ "github.com/gdamore/tcell"
+ "maunium.net/go/tview"
+)
+
+type Border struct {
+ *tview.Box
+}
+
+func NewBorder() *Border {
+ return &Border{tview.NewBox()}
+}
+
+func (border *Border) Draw(screen tcell.Screen) {
+ background := tcell.StyleDefault.Background(border.GetBackgroundColor()).Foreground(border.GetBorderColor())
+ x, y, width, height := border.GetRect()
+ if width == 1 {
+ for borderY := y; borderY < y+height; borderY++ {
+ screen.SetContent(x, borderY, tview.GraphicsVertBar, nil, background)
+ }
+ } else if height == 1 {
+ for borderX := x; borderX < x+width; borderX++ {
+ screen.SetContent(borderX, y, tview.GraphicsHoriBar, nil, background)
+ }
+ }
+}
diff --git a/ui/widget/center.go b/ui/widget/center.go
new file mode 100644
index 0000000..41181a2
--- /dev/null
+++ b/ui/widget/center.go
@@ -0,0 +1,32 @@
+// 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 widget
+
+import (
+ "maunium.net/go/tview"
+)
+
+func Center(width, height int, p tview.Primitive) tview.Primitive {
+ return tview.NewFlex().
+ AddItem(tview.NewBox(), 0, 1, false).
+ AddItem(tview.NewFlex().
+ SetDirection(tview.FlexRow).
+ AddItem(tview.NewBox(), 0, 1, false).
+ AddItem(p, height, 1, true).
+ AddItem(tview.NewBox(), 0, 1, false), width, 1, true).
+ AddItem(tview.NewBox(), 0, 1, false)
+}
diff --git a/ui/widget/color.go b/ui/widget/color.go
new file mode 100644
index 0000000..874b93d
--- /dev/null
+++ b/ui/widget/color.go
@@ -0,0 +1,60 @@
+// 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 widget
+
+import (
+ "fmt"
+ "hash/fnv"
+ "sort"
+
+ "github.com/gdamore/tcell"
+)
+
+var colorNames []string
+
+func init() {
+ colorNames = make([]string, len(tcell.ColorNames))
+ i := 0
+ for name, _ := range tcell.ColorNames {
+ colorNames[i] = name
+ i++
+ }
+ sort.Sort(sort.StringSlice(colorNames))
+}
+
+func GetHashColorName(s string) string {
+ switch s {
+ case "-->":
+ return "green"
+ case "<--":
+ return "red"
+ case "---":
+ return "yellow"
+ default:
+ h := fnv.New32a()
+ h.Write([]byte(s))
+ return colorNames[int(h.Sum32())%len(colorNames)]
+ }
+}
+
+func GetHashColor(s string) tcell.Color {
+ return tcell.ColorNames[GetHashColorName(s)]
+}
+
+func AddHashColor(s string) string {
+ return fmt.Sprintf("[%s]%s[white]", GetHashColorName(s), s)
+}
diff --git a/ui/widget/form-text-view.go b/ui/widget/form-text-view.go
new file mode 100644
index 0000000..58046e9
--- /dev/null
+++ b/ui/widget/form-text-view.go
@@ -0,0 +1,44 @@
+// 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 widget
+
+import (
+ "github.com/gdamore/tcell"
+ "maunium.net/go/tview"
+)
+
+type FormTextView struct {
+ *tview.TextView
+}
+
+func (ftv *FormTextView) GetLabel() string {
+ return ""
+}
+
+func (ftv *FormTextView) SetFormAttributes(label string, labelColor, bgColor, fieldTextColor, fieldBgColor tcell.Color) tview.FormItem {
+ return ftv
+}
+
+func (ftv *FormTextView) GetFieldWidth() int {
+ _, _, w, _ := ftv.TextView.GetRect()
+ return w
+}
+
+func (ftv *FormTextView) SetFinishedFunc(handler func(key tcell.Key)) tview.FormItem {
+ ftv.SetDoneFunc(handler)
+ return ftv
+}
diff --git a/ui/widget/message-view.go b/ui/widget/message-view.go
new file mode 100644
index 0000000..3503a5f
--- /dev/null
+++ b/ui/widget/message-view.go
@@ -0,0 +1,293 @@
+// 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 widget
+
+import (
+ "fmt"
+ "strings"
+ "time"
+
+ "github.com/gdamore/tcell"
+ "github.com/mattn/go-runewidth"
+ "maunium.net/go/gomuks/ui/types"
+ "maunium.net/go/tview"
+)
+
+type MessageView struct {
+ *tview.Box
+
+ ScrollOffset int
+ MaxSenderWidth int
+ DateFormat string
+ TimestampFormat string
+ TimestampWidth int
+ Separator rune
+
+ widestSender int
+ prevWidth int
+ prevHeight int
+ prevScrollOffset int
+ firstDisplayMessage int
+ lastDisplayMessage int
+ totalHeight int
+
+ messageIDs map[string]bool
+ messages []*types.Message
+}
+
+func NewMessageView() *MessageView {
+ return &MessageView{
+ Box: tview.NewBox(),
+ MaxSenderWidth: 20,
+ DateFormat: "January _2, 2006",
+ TimestampFormat: "15:04:05",
+ TimestampWidth: 8,
+ Separator: '|',
+ ScrollOffset: 0,
+
+ messages: make([]*types.Message, 0),
+ messageIDs: make(map[string]bool),
+
+ widestSender: 5,
+ prevWidth: -1,
+ prevHeight: -1,
+ prevScrollOffset: -1,
+ firstDisplayMessage: -1,
+ lastDisplayMessage: -1,
+ totalHeight: -1,
+ }
+}
+
+func (view *MessageView) NewMessage(id, sender, text string, timestamp time.Time) *types.Message {
+ return types.NewMessage(id, sender, text,
+ timestamp.Format(view.TimestampFormat),
+ timestamp.Format(view.DateFormat),
+ GetHashColor(sender))
+}
+
+func (view *MessageView) recalculateBuffers() {
+ _, _, width, _ := view.GetInnerRect()
+ width -= view.TimestampWidth + TimestampSenderGap + view.widestSender + SenderMessageGap
+ if width != view.prevWidth {
+ for _, message := range view.messages {
+ message.CalculateBuffer(width)
+ }
+ view.prevWidth = width
+ }
+}
+
+func (view *MessageView) updateWidestSender(sender string) {
+ if len(sender) > view.widestSender {
+ view.widestSender = len(sender)
+ if view.widestSender > view.MaxSenderWidth {
+ view.widestSender = view.MaxSenderWidth
+ }
+ }
+}
+
+const (
+ AppendMessage int = iota
+ PrependMessage
+)
+
+func (view *MessageView) AddMessage(message *types.Message, direction int) {
+ _, messageExists := view.messageIDs[message.ID]
+ if messageExists {
+ return
+ }
+
+ view.updateWidestSender(message.Sender)
+
+ _, _, width, _ := view.GetInnerRect()
+ width -= view.TimestampWidth + TimestampSenderGap + view.widestSender + SenderMessageGap
+ message.CalculateBuffer(width)
+
+ if direction == AppendMessage {
+ if view.ScrollOffset > 0 {
+ view.ScrollOffset += len(message.Buffer)
+ }
+ view.messages = append(view.messages, message)
+ } else if direction == PrependMessage {
+ view.messages = append([]*types.Message{message}, view.messages...)
+ }
+
+ view.messageIDs[message.ID] = true
+ view.recalculateHeight()
+}
+
+func (view *MessageView) recalculateHeight() {
+ _, _, width, height := view.GetInnerRect()
+ if height != view.prevHeight || width != view.prevWidth || view.ScrollOffset != view.prevScrollOffset {
+ view.firstDisplayMessage = -1
+ view.lastDisplayMessage = -1
+ view.totalHeight = 0
+ prevDate := ""
+ for i := len(view.messages) - 1; i >= 0; i-- {
+ prevTotalHeight := view.totalHeight
+ message := view.messages[i]
+ view.totalHeight += len(message.Buffer)
+ if message.Date != prevDate {
+ if len(prevDate) != 0 {
+ view.totalHeight++
+ }
+ prevDate = message.Date
+ }
+
+ if view.totalHeight < view.ScrollOffset {
+ continue
+ } else if view.firstDisplayMessage == -1 {
+ view.lastDisplayMessage = i
+ view.firstDisplayMessage = i
+ }
+
+ if prevTotalHeight < height+view.ScrollOffset {
+ view.lastDisplayMessage = i
+ }
+ }
+ view.prevScrollOffset = view.ScrollOffset
+ }
+}
+
+func (view *MessageView) PageUp() {
+ _, _, _, height := view.GetInnerRect()
+ view.ScrollOffset += height / 2
+ if view.ScrollOffset > view.totalHeight-height {
+ view.ScrollOffset = view.totalHeight - height + 5
+ }
+}
+
+func (view *MessageView) PageDown() {
+ _, _, _, height := view.GetInnerRect()
+ view.ScrollOffset -= height / 2
+ if view.ScrollOffset < 0 {
+ view.ScrollOffset = 0
+ }
+}
+
+func (view *MessageView) writeLine(screen tcell.Screen, line string, x, y int, color tcell.Color) {
+ offsetX := 0
+ for _, ch := range line {
+ chWidth := runewidth.RuneWidth(ch)
+ if chWidth == 0 {
+ continue
+ }
+
+ for localOffset := 0; localOffset < chWidth; localOffset++ {
+ screen.SetContent(x+offsetX+localOffset, y, ch, nil, tcell.StyleDefault.Foreground(color))
+ }
+ offsetX += chWidth
+ }
+}
+
+func (view *MessageView) writeLineRight(screen tcell.Screen, line string, x, y, maxWidth int, color tcell.Color) {
+ offsetX := maxWidth - runewidth.StringWidth(line)
+ if offsetX < 0 {
+ offsetX = 0
+ }
+ for _, ch := range line {
+ chWidth := runewidth.RuneWidth(ch)
+ if chWidth == 0 {
+ continue
+ }
+
+ for localOffset := 0; localOffset < chWidth; localOffset++ {
+ screen.SetContent(x+offsetX+localOffset, y, ch, nil, tcell.StyleDefault.Foreground(color))
+ }
+ offsetX += chWidth
+ if offsetX > maxWidth {
+ break
+ }
+ }
+}
+
+const (
+ TimestampSenderGap = 1
+ SenderSeparatorGap = 1
+ SenderMessageGap = 3
+)
+
+func (view *MessageView) Draw(screen tcell.Screen) {
+ view.Box.Draw(screen)
+
+ x, y, _, height := view.GetInnerRect()
+ view.recalculateBuffers()
+ view.recalculateHeight()
+
+ if view.firstDisplayMessage == -1 || view.lastDisplayMessage == -1 {
+ view.writeLine(screen, "It's quite empty in here.", x, y+height, tcell.ColorDefault)
+ return
+ }
+
+ usernameOffsetX := view.TimestampWidth + TimestampSenderGap
+ messageOffsetX := usernameOffsetX + view.widestSender + SenderMessageGap
+ separatorX := x + usernameOffsetX + view.widestSender + SenderSeparatorGap
+ for separatorY := y; separatorY < y+height; separatorY++ {
+ screen.SetContent(separatorX, separatorY, view.Separator, nil, tcell.StyleDefault)
+ }
+
+ writeOffset := 0
+ prevDate := ""
+ prevSender := ""
+ prevSenderLine := -1
+ for i := view.firstDisplayMessage; i >= view.lastDisplayMessage; i-- {
+ message := view.messages[i]
+ messageHeight := len(message.Buffer)
+
+ // Show message when the date changes.
+ if message.Date != prevDate {
+ if len(prevDate) > 0 {
+ writeOffset++
+ view.writeLine(
+ screen, fmt.Sprintf("Date changed to %s", prevDate),
+ x+messageOffsetX, y+height-writeOffset, tcell.ColorGreen)
+ }
+ prevDate = message.Date
+ }
+
+ senderAtLine := y + height - writeOffset - messageHeight
+ // The message may be only partially on screen, so we need to make sure the sender
+ // is on screen even when the message is not shown completely.
+ if senderAtLine < y {
+ senderAtLine = y
+ }
+
+ view.writeLine(screen, message.Timestamp, x, senderAtLine, tcell.ColorDefault)
+ view.writeLineRight(screen, message.Sender,
+ x+usernameOffsetX, senderAtLine,
+ view.widestSender, message.SenderColor)
+
+ if message.Sender == prevSender {
+ // Sender is same as previous. We're looping from bottom to top, and we want the
+ // sender name only on the topmost message, so clear out the duplicate sender name
+ // below.
+ view.writeLineRight(screen, strings.Repeat(" ", view.widestSender),
+ x+usernameOffsetX, prevSenderLine,
+ view.widestSender, message.SenderColor)
+ }
+ prevSender = message.Sender
+ prevSenderLine = senderAtLine
+
+ for num, line := range message.Buffer {
+ offsetY := height - messageHeight - writeOffset + num
+ // Only render message if it's within the message view.
+ if offsetY >= 0 {
+ view.writeLine(screen, line, x+messageOffsetX, y+offsetY, tcell.ColorDefault)
+ }
+ }
+ writeOffset += messageHeight
+ }
+}
diff --git a/ui/widget/room-view.go b/ui/widget/room-view.go
new file mode 100644
index 0000000..eeab7b2
--- /dev/null
+++ b/ui/widget/room-view.go
@@ -0,0 +1,152 @@
+// 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 widget
+
+import (
+ "fmt"
+ "strings"
+ "time"
+
+ "github.com/gdamore/tcell"
+ rooms "maunium.net/go/gomuks/matrix/room"
+ "maunium.net/go/gomuks/ui/types"
+ "maunium.net/go/tview"
+)
+
+type Renderable interface {
+ Render()
+}
+
+type RoomView struct {
+ *tview.Box
+
+ topic *tview.TextView
+ content *MessageView
+ status *tview.TextView
+ userList *tview.TextView
+ Room *rooms.Room
+
+ parent Renderable
+}
+
+func NewRoomView(parent Renderable, room *rooms.Room) *RoomView {
+ view := &RoomView{
+ Box: tview.NewBox(),
+ topic: tview.NewTextView(),
+ content: NewMessageView(),
+ status: tview.NewTextView(),
+ userList: tview.NewTextView(),
+ Room: room,
+ parent: parent,
+ }
+ view.topic.
+ SetText(strings.Replace(room.GetTopic(), "\n", " ", -1)).
+ SetBackgroundColor(tcell.ColorDarkGreen)
+ view.status.SetBackgroundColor(tcell.ColorDimGray)
+ view.userList.SetDynamicColors(true)
+ return view
+}
+
+func (view *RoomView) Draw(screen tcell.Screen) {
+ view.Box.Draw(screen)
+
+ x, y, width, height := view.GetRect()
+ view.topic.SetRect(x, y, width, 1)
+ view.content.SetRect(x, y+1, width-30, height-2)
+ view.status.SetRect(x, y+height-1, width, 1)
+ view.userList.SetRect(x+width-29, y+1, 29, height-2)
+
+ view.topic.Draw(screen)
+ view.content.Draw(screen)
+ view.status.Draw(screen)
+
+ borderX := x + width - 30
+ background := tcell.StyleDefault.Background(view.GetBackgroundColor()).Foreground(view.GetBorderColor())
+ for borderY := y + 1; borderY < y+height-1; borderY++ {
+ screen.SetContent(borderX, borderY, tview.GraphicsVertBar, nil, background)
+ }
+ view.userList.Draw(screen)
+}
+
+func (view *RoomView) SetStatus(status string) {
+ view.status.SetText(status)
+}
+
+func (view *RoomView) SetTyping(users []string) {
+ for index, user := range users {
+ member := view.Room.GetMember(user)
+ if member != nil {
+ users[index] = member.DisplayName
+ }
+ }
+ if len(users) == 0 {
+ view.status.SetText("")
+ } else if len(users) < 2 {
+ view.status.SetText("Typing: " + strings.Join(users, " and "))
+ } else {
+ view.status.SetText(fmt.Sprintf(
+ "Typing: %s and %s",
+ strings.Join(users[:len(users)-1], ", "), users[len(users)-1]))
+ }
+}
+
+func (view *RoomView) AutocompleteUser(existingText string) (completions []string) {
+ for _, user := range view.Room.GetMembers() {
+ if strings.HasPrefix(user.DisplayName, existingText) {
+ completions = append(completions, user.DisplayName)
+ } else if strings.HasPrefix(user.UserID, existingText) {
+ completions = append(completions, user.UserID)
+ }
+ }
+ return
+}
+
+func (view *RoomView) MessageView() *MessageView {
+ return view.content
+}
+
+func (view *RoomView) UpdateUserList() {
+ var joined strings.Builder
+ var invited strings.Builder
+ for _, user := range view.Room.GetMembers() {
+ if user.Membership == "join" {
+ joined.WriteString(AddHashColor(user.DisplayName))
+ joined.WriteRune('\n')
+ } else if user.Membership == "invite" {
+ invited.WriteString(AddHashColor(user.DisplayName))
+ invited.WriteRune('\n')
+ }
+ }
+ view.userList.Clear()
+ fmt.Fprintf(view.userList, "%s\n", joined.String())
+ if invited.Len() > 0 {
+ fmt.Fprintf(view.userList, "\nInvited:\n%s", invited.String())
+ }
+}
+
+func (view *RoomView) NewMessage(id, sender, text string, timestamp time.Time) *types.Message {
+ member := view.Room.GetMember(sender)
+ if member != nil {
+ sender = member.DisplayName
+ }
+ return view.content.NewMessage(id, sender, text, timestamp)
+}
+
+func (view *RoomView) AddMessage(message *types.Message, direction int) {
+ view.content.AddMessage(message, direction)
+ view.parent.Render()
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-29 08:17:38 +0000