Can focus/blur widgets (with focus border color)

weather/widget.go

@@ -36,6 +36,7 @@ func (widget *Widget) Refresh() {
 
 	data := Fetch(wtf.ToInts(Config.UList("wtf.mods.weather.cityids", widget.defaultCityCodes())))
 
+	//widget.SetBorder()
 	widget.View.Clear()
 	widget.contentFor(data)
 	widget.RefreshedAt = time.Now()

wtf.go

@@ -4,6 +4,7 @@ import (
 	"flag"
 	"os"
 	"time"
+	//"math/rand"
 
 	"github.com/gdamore/tcell"
 	"github.com/olebedev/config"
@@ -35,7 +36,7 @@ func addToGrid(grid *tview.Grid, widget wtf.TextViewer) {
 		widget.Width(),
 		0,
 		0,
-		false, // has focus
+		false,
 	)
 }
 
@@ -54,22 +55,29 @@ func buildGrid(modules []wtf.TextViewer) *tview.Grid {
 	return grid
 }
 
-// FIXME: Not a fan of how this function has to reach outside itself, grab
-// Modules, and then operate on them. Should be able to pass that in instead
 func keyboardIntercept(event *tcell.EventKey) *tcell.EventKey {
-	// Ctrl-R: force-refreshes every widget
-	if event.Key() == tcell.KeyCtrlR {
-		for _, module := range Widgets {
-			go module.Refresh()
-		}
-	} else if event.Key() == tcell.KeyTab {
+	switch event.Key() {
+	case tcell.KeyCtrlR:
+		refreshAllModules()
+	case tcell.KeyTab:
+		FocusTracker.Next()
+	case tcell.KeyBacktab:
+		FocusTracker.Prev()
+	case tcell.KeyEsc:
+		FocusTracker.None()
+	default:
+		return event
 	}
 
 	return event
 }
 
-func refresher(app *tview.Application) {
-	tick := time.NewTicker(time.Duration(Config.UInt("wtf.refreshInterval", 1)) * time.Second)
+// redrawApp redraws the rendered views to screen on a defined interval (set in config.yml)
+// Use this because each textView widget can have it's own update interval, and I don't want to
+// manage drawing co-ordination amongst them all. If you need to have a
+// widget redraw on it's own schedule, use the view's SetChangedFunc() and pass it `app`.
+func redrawApp(app *tview.Application) {
+	tick := time.NewTicker(time.Duration(Config.UInt("wtf.refreshInterval", 2)) * time.Second)
 	quit := make(chan struct{})
 
 	for {
@@ -83,9 +91,16 @@ func refresher(app *tview.Application) {
 	}
 }
 
+func refreshAllModules() {
+	for _, module := range Widgets {
+		go module.Refresh()
+	}
+}
+
 var result = wtf.CreateConfigDir()
 
 var Config *config.Config
+var FocusTracker wtf.FocusTracker
 var Widgets []wtf.TextViewer
 
 /* -------------------- Main -------------------- */
@@ -128,8 +143,14 @@ func main() {
 	app := tview.NewApplication()
 	app.SetInputCapture(keyboardIntercept)
 
+	FocusTracker = wtf.FocusTracker{
+		App:     app,
+		Idx:     0,
+		Widgets: Widgets,
+	}
+
 	// Loop in a routine to redraw the screen
-	go refresher(app)
+	go redrawApp(app)
 
 	grid := buildGrid(Widgets)
 	if err := app.SetRoot(grid, true).Run(); err != nil {

wtf/config_files.go

@@ -18,6 +18,7 @@ func CreateConfigDir() bool {
 			panic(err)
 		}
 	}
+
 	return true
 }
 

wtf/focus_tracker.go

@@ -0,0 +1,60 @@
+package wtf
+
+import (
+	"github.com/rivo/tview"
+	"github.com/senorprogrammer/wtf/color"
+)
+
+type FocusTracker struct {
+	App     *tview.Application
+	Idx     int
+	Widgets []TextViewer
+}
+
+/* -------------------- Exported Functions -------------------- */
+
+func (tracker *FocusTracker) Next() {
+	tracker.blur(tracker.Idx)
+	tracker.increment()
+	tracker.focus(tracker.Idx)
+}
+
+func (tracker *FocusTracker) None() {
+	tracker.blur(tracker.Idx)
+}
+
+func (tracker *FocusTracker) Prev() {
+	tracker.blur(tracker.Idx)
+	tracker.decrement()
+	tracker.focus(tracker.Idx)
+}
+
+/* -------------------- Exported Functions -------------------- */
+
+func (tracker *FocusTracker) blur(idx int) {
+	view := tracker.Widgets[idx].TextView()
+	view.Blur()
+	view.SetBorderColor(color.ColorFor(Config.UString("wtf.border.normal")))
+}
+
+func (tracker *FocusTracker) decrement() {
+	tracker.Idx = tracker.Idx - 1
+
+	if tracker.Idx < 0 {
+		tracker.Idx = len(tracker.Widgets) - 1
+	}
+}
+
+func (tracker *FocusTracker) focus(idx int) {
+	view := tracker.Widgets[idx].TextView()
+	tracker.App.SetFocus(view)
+	view.SetBorderColor(color.ColorFor(Config.UString("wtf.border.focus")))
+}
+
+func (tracker *FocusTracker) increment() {
+	tracker.Idx = tracker.Idx + 1
+
+	if tracker.Idx == len(tracker.Widgets) {
+		tracker.Idx = 0
+	}
+}

wtf/text_widget.go

@@ -40,20 +40,20 @@ func NewTextWidget(name string, configKey string) TextWidget {
 	return widget
 }
 
-func (widget *TextWidget) addView() {
-	view := tview.NewTextView()
-
-	view.SetBorder(true)
-	view.SetBorderColor(color.ColorFor(Config.UString("wtf.border.normal")))
-	view.SetDynamicColors(true)
-	view.SetTitle(widget.Name)
-	view.SetWrap(false)
-
-	widget.View = view
-}
-
 /* -------------------- Exported Functions -------------------- */
 
+//func (widget *TextWidget) SetBorder() {
+  //var colorName string
+
+	//if widget.View.HasFocus() {
+		//colorName = Config.UString("wtf.border.normal")
+ //} else {
+		//colorName = Config.UString("wtf.border.focus")
+ //}
+
+ //widget.View.SetBorderColor(color.ColorFor(colorName))
+//}
+
 func (widget *TextWidget) Disabled() bool {
 	return !widget.Enabled()
 }
@@ -69,3 +69,18 @@ func (widget *TextWidget) RefreshInterval() int {
 func (widget *TextWidget) TextView() *tview.TextView {
 	return widget.View
 }
+
+/* -------------------- Unexported Functions -------------------- */
+
+func (widget *TextWidget) addView() {
+	view := tview.NewTextView()
+
+	view.SetBorder(true)
+	view.SetBorderColor(color.ColorFor(Config.UString("wtf.border.normal")))
+	view.SetDynamicColors(true)
+	view.SetTitle(widget.Name)
+	view.SetWrap(false)
+
+	widget.View = view
+}
+