Remove output options

README.md

@@ -21,21 +21,29 @@ package main
 import (
     "context"
     "fmt"
+    "time"
 
     "github.com/c-bata/go-prompt-toolkit/prompt"
 )
 
-// executor executes command and return the output string.
+// executor executes command and print the output.
 // 1. Execute sql
-// 2. Get response and return output
-func executor(ctx context.Context, sql string) string {
+// 2. Get response and print it
+func executor(ctx context.Context, sql string)  {
     res := "something response from db."
-    return res // this is printed in console.
+    fmt.Println(res)
+    return
 }
 
 // completer returns the completion items from user input.
-func completer(sql string) []string {
-    return []string{"users", "articles", "comments", "groups", "tags"}
+func completer(sql string) []prompt.Suggest {
+    return []primpt.Suggest{
+        {Text: "users", Description: "user collections."},
+        {Text: "articles", Description: "article is posted by users."},
+        {Text: "comments", Description: "comment is inserted with each articles."},
+        {Text: "groups", Description: "group is the collection of users."},
+        {Text: "tags", Description: "tag contains hash tag like #prompt"},
+    }
 }
 
 func main() {
@@ -66,8 +74,6 @@ func main() {
 #### `OptionInputBGColor(x Color)`
 #### `OptionPreviewSuggestionTextColor(x Color)`
 #### `OptionPreviewSuggestionBGColor(x Color)`
-#### `OptionOutputTextColor(x Color)`
-#### `OptionOutputBGColor(x Color)`
 #### `OptionSuggestionTextColor(x Color)`
 #### `OptionSuggestionBGColor(x Color)`
 #### `OptionSelectedSuggestionTextColor(x Color)`

_example/echo/main.go

@@ -7,8 +7,8 @@ import (
 	"github.com/c-bata/go-prompt-toolkit"
 )
 
-func executor(ctx context.Context, t string) string {
-	return fmt.Sprintln("Your input: " + t)
+func executor(ctx context.Context, t string) {
+	fmt.Println("Your input: " + t)
 }
 
 func completer(t string) []prompt.Suggest {
@@ -26,7 +26,6 @@ func main() {
 		completer,
 		prompt.OptionPrefix(">>> "),
 		prompt.OptionTitle("sqlite3-cli"),
-		prompt.OptionOutputTextColor(prompt.DarkGray),
 	)
 	defer fmt.Println("\nGoodbye!")
 	pt.Run()

_example/sleep/main.go

@@ -9,7 +9,7 @@ import (
 	"github.com/c-bata/go-prompt-toolkit"
 )
 
-func executor(ctx context.Context, t string) string {
+func executor(ctx context.Context, t string) {
 	ctx, cancel := context.WithTimeout(ctx, 10*time.Second)
 	defer cancel()
 
@@ -22,7 +22,7 @@ func executor(ctx context.Context, t string) string {
 		cmd.Run()
 		fmt.Println("Foo")
 	}
-	return ""
+	return
 }
 
 func completer(t string) []prompt.Suggest {
@@ -36,7 +36,6 @@ func main() {
 	pt := prompt.NewPrompt(
 		executor,
 		completer,
-		prompt.OptionOutputTextColor(prompt.DarkGray),
 	)
 	defer fmt.Println("\nGoodbye!")
 	pt.Run()

option.go

@@ -74,20 +74,6 @@ func OptionPreviewSuggestionBGColor(x Color) option {
 	}
 }
 
-func OptionOutputTextColor(x Color) option {
-	return func(p *Prompt) error {
-		p.renderer.outputTextColor = x
-		return nil
-	}
-}
-
-func OptionOutputBGColor(x Color) option {
-	return func(p *Prompt) error {
-		p.renderer.outputBGColor = x
-		return nil
-	}
-}
-
 func OptionSuggestionTextColor(x Color) option {
 	return func(p *Prompt) error {
 		p.renderer.suggestionTextColor = x
@@ -161,8 +147,6 @@ func NewPrompt(executor Executor, completer Completer, opts ...option) *Prompt {
 			prefixBGColor:                DefaultColor,
 			inputTextColor:               DefaultColor,
 			inputBGColor:                 DefaultColor,
-			outputTextColor:              DefaultColor,
-			outputBGColor:                DefaultColor,
 			previewSuggestionTextColor:   Green,
 			previewSuggestionBGColor:     DefaultColor,
 			suggestionTextColor:          White,

prompt.go

@@ -15,7 +15,7 @@ const (
 	envEnableLog = "GO_PROMPT_ENABLE_LOG"
 )
 
-type Executor func(context.Context, string) string
+type Executor func(context.Context, string)
 type Completer func(string) []Suggest
 
 type Prompt struct {
@@ -93,16 +93,16 @@ func (p *Prompt) Run() {
 }
 
 func (p *Prompt) runExecutor(exec *Exec, bufCh chan []byte) {
-	resCh := make(chan string, 1)
+	resCh := make(chan struct{}, 1)
 	ctx, cancel := context.WithCancel(exec.Context())
 	go func() {
-		resCh <- p.executor(ctx, exec.input)
+		p.executor(ctx, exec.input)
+		resCh <- struct{}{}
 	}()
 
 	for {
 		select {
-		case r := <-resCh:
-			p.renderer.RenderResult(r)
+		case <-resCh:
 			return
 		case b := <-bufCh:
 			if p.in.GetKey(b) == ControlC {

render.go

@@ -23,8 +23,6 @@ type Render struct {
 	prefixBGColor                Color
 	inputTextColor               Color
 	inputBGColor                 Color
-	outputTextColor              Color
-	outputBGColor                Color
 	previewSuggestionTextColor   Color
 	previewSuggestionBGColor     Color
 	suggestionTextColor          Color
@@ -179,14 +177,6 @@ func (r *Render) BreakLine(buffer *Buffer) {
 	r.out.Flush()
 }
 
-func (r *Render) RenderResult(result string) {
-	if result != "" {
-		r.out.SetColor(r.outputTextColor, r.outputBGColor, false)
-		r.out.WriteRawStr(result)
-	}
-	r.out.SetColor(DefaultColor, DefaultColor, false)
-}
-
 func formatCompletions(completions []Suggest, max int) (new []Suggest, width int) {
 	num := len(completions)
 	new = make([]Suggest, num)