From c658c23b413ce218cf69b744a6eeed43324d515c Mon Sep 17 00:00:00 2001
From: eeeXun <sdes96303@gmail.com>
Date: Mon, 24 Oct 2022 18:02:57 +0800
Subject: [PATCH] rename & comment

---
 color.go      |  2 +-
 translator.go | 12 ++++++------
 ui.go         | 20 ++++++++++++--------
 3 files changed, 19 insertions(+), 15 deletions(-)

diff --git a/color.go b/color.go
index db51818..9b5bdd5 100644
--- a/color.go
+++ b/color.go
@@ -57,7 +57,7 @@ func NewStyle() *Style {
 		selectedColor:   "gray",
 		prefixColor:     "cyan",
 		labelColor:      "yellow",
-		pressColor:      "cyan",
+		pressColor:      "purple",
 	}
 }
 
diff --git a/translator.go b/translator.go
index c20adf6..03eb863 100644
--- a/translator.go
+++ b/translator.go
@@ -59,13 +59,13 @@ func (t *Translator) Translate(message string) (string, error) {
 	var data []interface{}
 	var translated string
 
-	url_str := fmt.Sprintf(
+	urlStr := fmt.Sprintf(
 		textURL,
 		LangCode[t.srcLang],
 		LangCode[t.dstLang],
 		url.QueryEscape(message),
 	)
-	res, err := http.Get(url_str)
+	res, err := http.Get(urlStr)
 	if err != nil {
 		return "", err
 	}
@@ -81,8 +81,8 @@ func (t *Translator) Translate(message string) (string, error) {
 	if len(data) > 0 {
 		result := data[0]
 		for _, lines := range result.([]interface{}) {
-			translated_line := lines.([]interface{})[0]
-			translated += fmt.Sprintf("%v", translated_line)
+			translatedLine := lines.([]interface{})[0]
+			translated += fmt.Sprintf("%v", translatedLine)
 		}
 		return translated, nil
 	}
@@ -91,12 +91,12 @@ func (t *Translator) Translate(message string) (string, error) {
 }
 
 func (t *Translator) PlaySound(lang string, message string) error {
-	url_str := fmt.Sprintf(
+	urlStr := fmt.Sprintf(
 		soundURL,
 		url.QueryEscape(message),
 		LangCode[lang],
 	)
-	res, err := http.Get(url_str)
+	res, err := http.Get(urlStr)
 	if err != nil {
 		t.soundLock.Release()
 		return err
diff --git a/ui.go b/ui.go
index 168df2d..d7ed9e7 100644
--- a/ui.go
+++ b/ui.go
@@ -252,7 +252,7 @@ func uiInit() {
 	updateTitle()
 
 	// handler
-	mainPage.SetInputCapture(pagesHandler)
+	mainPage.SetInputCapture(mainpageHandler)
 	langWindow.SetInputCapture(langWindowHandler)
 	styleWindow.SetInputCapture(styleWindowHandler)
 	translateWindow.SetInputCapture(translatePageHandler)
@@ -300,11 +300,12 @@ func uiInit() {
 	})
 }
 
-func pagesHandler(event *tcell.EventKey) *tcell.EventKey {
+func mainpageHandler(event *tcell.EventKey) *tcell.EventKey {
 	key := event.Key()
 
 	switch key {
 	case tcell.KeyCtrlT:
+		// Toggle transparent
 		style.Transparent = !style.Transparent
 		updateBackgroundColor()
 		transparentDropDown.SetCurrentOption(
@@ -351,6 +352,7 @@ func translatePageHandler(event *tcell.EventKey) *tcell.EventKey {
 	case tcell.KeyCtrlJ:
 		message := srcBox.GetText()
 		if len(message) > 0 {
+			// Only translate when message exist
 			result, err := translator.Translate(message)
 			if err != nil {
 				dstBox.SetText(err.Error())
@@ -363,20 +365,21 @@ func translatePageHandler(event *tcell.EventKey) *tcell.EventKey {
 	case tcell.KeyCtrlS:
 		translator.srcLang, translator.dstLang = translator.dstLang, translator.srcLang
 		updateTitle()
-		src_text := srcBox.GetText()
-		dst_text := dstBox.GetText(false)
-		if len(dst_text) > 0 {
+		srcText := srcBox.GetText()
+		dstText := dstBox.GetText(false)
+		if len(dstText) > 0 {
 			// GetText of Box contains "\n" if it has words
-			srcBox.SetText(dst_text[:len(dst_text)-1], true)
+			srcBox.SetText(dstText[:len(dstText)-1], true)
 		} else {
-			srcBox.SetText(dst_text, true)
+			srcBox.SetText(dstText, true)
 		}
-		dstBox.SetText(src_text)
+		dstBox.SetText(srcText)
 	case tcell.KeyCtrlO:
 		// Play source sound
 		if translator.soundLock.Available() {
 			message := srcBox.GetText()
 			if len(message) > 0 {
+				// Only play when message exist
 				translator.soundLock.Acquire()
 				go func() {
 					err := translator.PlaySound(translator.srcLang, message)
@@ -392,6 +395,7 @@ func translatePageHandler(event *tcell.EventKey) *tcell.EventKey {
 		if translator.soundLock.Available() {
 			message := dstBox.GetText(false)
 			if len(message) > 0 {
+				// Only play when message exist
 				translator.soundLock.Acquire()
 				go func() {
 					err := translator.PlaySound(translator.dstLang, message)