WTF-315 Fix race conditions caused by writing to view

modules/cryptoexchanges/bittrex/widget.go

@@ -20,6 +20,7 @@ const baseURL = "https://bittrex.com/api/v1.1/public/getmarketsummary"
 type Widget struct {
 	wtf.TextWidget
 
+	app      *tview.Application
 	settings *Settings
 	summaryList
 }
@@ -29,6 +30,7 @@ func NewWidget(app *tview.Application, settings *Settings) *Widget {
 	widget := Widget{
 		TextWidget: wtf.NewTextWidget(app, settings.common, false),
 
+		app:         app,
 		settings:    settings,
 		summaryList: summaryList{},
 	}
@@ -77,7 +79,10 @@ func makeMarketCurrency(name string) *mCurrency {
 // Refresh & update after interval time
 func (widget *Widget) Refresh() {
 	widget.updateSummary()
-	widget.display()
+
+	widget.app.QueueUpdateDraw(func() {
+		widget.display()
+	})
 }
 
 /* -------------------- Unexported Functions -------------------- */
@@ -137,7 +142,9 @@ func (widget *Widget) updateSummary() {
 		}
 	}
 
-	widget.display()
+	widget.app.QueueUpdateDraw(func() {
+		widget.display()
+	})
 }
 
 func makeRequest(baseName, marketName string) *http.Request {

modules/cryptoexchanges/blockfolio/widget.go

@@ -14,6 +14,7 @@ import (
 type Widget struct {
 	wtf.TextWidget
 
+	app          *tview.Application
 	device_token string
 	settings     *Settings
 }
@@ -22,6 +23,7 @@ func NewWidget(app *tview.Application, settings *Settings) *Widget {
 	widget := Widget{
 		TextWidget: wtf.NewTextWidget(app, settings.common, false),
 
+		app:          app,
 		device_token: settings.deviceToken,
 		settings:     settings,
 	}
@@ -32,15 +34,17 @@ func NewWidget(app *tview.Application, settings *Settings) *Widget {
 /* -------------------- Exported Functions -------------------- */
 
 func (widget *Widget) Refresh() {
-	widget.View.SetTitle(" Blockfolio ")
-
 	positions, err := Fetch(widget.device_token)
 	if err != nil {
 		return
 	}
 
 	content := widget.contentFrom(positions)
-	widget.View.SetText(content)
+
+	widget.app.QueueUpdateDraw(func() {
+		widget.View.SetTitle(" Blockfolio ")
+		widget.View.SetText(content)
+	})
 }
 
 /* -------------------- Unexported Functions -------------------- */

modules/cryptoexchanges/cryptolive/widget.go

@@ -14,6 +14,7 @@ import (
 type Widget struct {
 	wtf.TextWidget
 
+	app           *tview.Application
 	priceWidget   *price.Widget
 	toplistWidget *toplist.Widget
 	settings      *Settings
@@ -24,6 +25,7 @@ func NewWidget(app *tview.Application, settings *Settings) *Widget {
 	widget := Widget{
 		TextWidget: wtf.NewTextWidget(app, settings.common, false),
 
+		app:           app,
 		priceWidget:   price.NewWidget(settings.priceSettings),
 		toplistWidget: toplist.NewWidget(settings.toplistSettings),
 		settings:      settings,
@@ -46,14 +48,17 @@ func (widget *Widget) Refresh() {
 	widget.toplistWidget.Refresh(&wg)
 	wg.Wait()
 
-	display(widget)
+	widget.app.QueueUpdateDraw(func() {
+		widget.display()
+	})
 }
 
 /* -------------------- Unexported Functions -------------------- */
 
-func display(widget *Widget) {
+func (widget *Widget) display() {
 	str := ""
 	str += widget.priceWidget.Result
 	str += widget.toplistWidget.Result
+
 	widget.View.SetText(fmt.Sprintf("\n%s", str))
 }