basic structure for tview application

cmd/gosdn-tview/app.go

+package main
+
+import "github.com/rivo/tview"
+
+type view interface {
+	GetContent() tview.Primitive
+}
+type App struct {
+	app *tview.Application
+}
+
+func NewApp() *App {
+	a := &App{
+		app: tview.NewApplication(),
+	}
+	return a
+}
+
+func (a *App) setView(v view) {
+	a.app.SetRoot(v.GetContent(), true)
+}
+
+func (a *App) Run() error {
+	return a.app.Run()
+}

cmd/gosdn-tview/main.go

+package main
+
+import "code.fbi.h-da.de/cocsn/gosdn/cmd/gosdn-tview/views"
+
+func main() {
+	app := NewApp()
+	app.setView(views.NewMainView())
+	app.Run()
+}

cmd/gosdn-tview/views/commandsListView.go

+package views
+
+import (
+	"github.com/gdamore/tcell"
+	"github.com/rivo/tview"
+)
+
+type CommandListView struct {
+	rootNode     *tview.TreeNode
+	commandsTree *tview.TreeView
+}
+
+func NewCommandListView(rootTitle string) *CommandListView {
+
+	v := &CommandListView{}
+	v.rootNode = tview.NewTreeNode(rootTitle)
+	v.commandsTree = tview.NewTreeView()
+	v.commandsTree.
+		SetRoot(v.rootNode).
+		SetTitle("Commands").
+		SetBorder(true).
+		SetBorderColor(tcell.ColorSteelBlue)
+
+	return v
+}
+
+func (c *CommandListView) GetContent() tview.Primitive {
+	return c.commandsTree
+}
+
+func (v *CommandListView) GetCommands(path string) {
+	//TODO: change to use commandlist
+}
+
+func (v *CommandListView) SelectedFunc() {
+	//TODO: call GRPC calls for the selected item
+}

cmd/gosdn-tview/views/mainView.go

+package views
+
+import "github.com/rivo/tview"
+
+type MainView struct {
+	pages              *tview.Pages
+	mainFlexBox        *tview.Flex
+	commandsListView   *CommandListView
+	resultAndInputView *ResultAndInputView
+}
+
+func NewMainView() *MainView {
+	v := &MainView{}
+	v.pages = tview.NewPages()
+	v.resultAndInputView = NewResultAndInputView()
+	v.commandsListView = NewCommandListView("")
+	v.commandsListView.GetCommands("../")
+
+	v.mainFlexBox = createFlexBox(tview.FlexColumn)
+
+	commandsFlexBox := createFlexBox(tview.FlexRow)
+	commandsFlexBox.AddItem(v.commandsListView.GetContent(), 0, 40, true)
+
+	resultAndInputFlexBox := createFlexBox(tview.FlexRow)
+	resultAndInputFlexBox.AddItem(v.resultAndInputView.GetContent(), 0, 10, false)
+
+	v.mainFlexBox.
+		AddItem(commandsFlexBox, 0, 1, true).
+		AddItem(resultAndInputFlexBox, 0, 4, false)
+
+	v.pages.AddPage("main", v.mainFlexBox, true, true)
+
+	return v
+}
+
+func (mv *MainView) GetContent() tview.Primitive {
+	return mv.pages
+}
+
+func createFlexBox(direction int) *tview.Flex {
+	fb := tview.NewFlex().SetDirection(direction)
+	return fb
+}

cmd/gosdn-tview/views/resultAndInputView.go

+package views
+
+import (
+	"github.com/gdamore/tcell"
+	"github.com/rivo/tview"
+)
+
+type ResultAndInputView struct {
+	resultAndInputView *tview.TextView
+}
+
+func NewResultAndInputView() *ResultAndInputView {
+	v := &ResultAndInputView{}
+	v.resultAndInputView = tview.NewTextView()
+	v.resultAndInputView.
+		SetDynamicColors(true).
+		SetRegions(true).
+		SetScrollable(true).
+		SetTitle("Result").
+		SetBorder(true).
+		SetBorderColor(tcell.ColorSteelBlue)
+
+	return v
+}
+
+func (r *ResultAndInputView) GetContent() tview.Primitive {
+	return r.resultAndInputView
+}