Add rudimentary RosterView

ui/view-main.go

@@ -45,6 +45,7 @@ type MainView struct {
 
 	roomList     *RoomList
 	roomView     *mauview.Box
+	rosterView   *RosterView
 	currentRoom  *RoomView
 	rooms        map[id.RoomID]*RoomView
 	roomsLock    sync.RWMutex
@@ -73,6 +74,7 @@ func (ui *GomuksUI) NewMainView() mauview.Component {
 		parent: ui,
 	}
 	mainView.roomList = NewRoomList(mainView)
+	mainView.rosterView = NewRosterView(mainView)
 	mainView.cmdProcessor = NewCommandProcessor(mainView)
 
 	mainView.flex.
@@ -103,7 +105,9 @@ func (view *MainView) HideModal() {
 }
 
 func (view *MainView) Draw(screen mauview.Screen) {
-	if view.config.Preferences.HideRoomList {
+	if view.config.Preferences.DisplayMode == config.DisplayModeModern {
+		view.rosterView.Draw(screen)
+	} else if view.config.Preferences.HideRoomList {
 		view.roomView.Draw(screen)
 	} else {
 		view.flex.Draw(screen)

ui/view-roster.go

@@ -0,0 +1,90 @@
+// gomuks - A terminal Matrix client written in Go.
+// Copyright (C) 2020 Tulir Asokan
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero 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 Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package ui
+
+import (
+	"go.mau.fi/mauview"
+	"go.mau.fi/tcell"
+
+	"maunium.net/go/gomuks/matrix/rooms"
+	"maunium.net/go/gomuks/ui/widget"
+)
+
+type RosterView struct {
+	mauview.Component
+
+	selected *rooms.Room
+
+	height, width int
+
+	// 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
+
+	parent *MainView
+}
+
+func NewRosterView(mainView *MainView) *RosterView {
+	rstr := &RosterView{
+		parent: mainView,
+	}
+
+	return rstr
+}
+
+func (rstr *RosterView) Draw(screen mauview.Screen) {
+	rstr.width, rstr.height = screen.Size()
+	y := 0
+
+	for _, room := range rstr.parent.rooms {
+		if room.Room.IsReplaced() {
+			continue
+		}
+
+		renderHeight := 1
+		if y+renderHeight >= rstr.height {
+			renderHeight = rstr.height - y
+		}
+
+		isSelected := room.Room == rstr.selected
+
+		style := tcell.StyleDefault.
+			Foreground(rstr.mainTextColor).
+			Bold(room.Room.HasNewMessages())
+		if isSelected {
+			style = style.
+				Foreground(rstr.selectedTextColor).
+				Background(rstr.selectedBackgroundColor)
+		}
+
+		widget.WriteLinePadded(
+			screen,
+			mauview.AlignLeft,
+			room.Room.GetTitle(),
+			0, y, rstr.width,
+			style,
+		)
+
+		y += renderHeight
+		if y >= rstr.height {
+			break
+		}
+	}
+}