Add option to show/hide cursor when prompting user (#345) (#348)

Author: dmartin35

examples/cursor.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/AlecAivazis/survey/v2"
+)
+
+// the questions to ask
+var simpleQs = []*survey.Question{
+	{
+		Name: "name",
+		Prompt: &survey.Input{
+			Message: "What is your name?",
+		},
+		Validate: survey.Required,
+	},
+}
+
+func main() {
+	ansmap := make(map[string]interface{})
+
+	// ask the question
+	err := survey.Ask(simpleQs, &ansmap, survey.WithShowCursor(true))
+
+	if err != nil {
+		fmt.Println(err.Error())
+		return
+	}
+	// print the answers
+	fmt.Printf("Your name is %s.\n", ansmap["name"])
+}

input.go

@@ -150,8 +150,10 @@ func (i *Input) Prompt(config *PromptConfig) (interface{}, error) {
 	defer rr.RestoreTermMode()
 
 	cursor := i.NewCursor()
-	cursor.Hide()       // hide the cursor
-	defer cursor.Show() // show the cursor when we're done
+	if !config.ShowCursor {
+		cursor.Hide()       // hide the cursor
+		defer cursor.Show() // show the cursor when we're done
+	}
 
 	// start waiting for input
 	for {

survey.go

@@ -55,6 +55,7 @@ func defaultAskOptions() *AskOptions {
 				return strings.Contains(strings.ToLower(value), filter)
 			},
 			KeepFilter: false,
+			ShowCursor: false,
 		},
 	}
 }
@@ -114,6 +115,7 @@ type PromptConfig struct {
 	SuggestInput string
 	Filter       func(filter string, option string, index int) bool
 	KeepFilter   bool
+	ShowCursor   bool
 }
 
 // Prompt is the primary interface for the objects that can take user input
@@ -219,6 +221,17 @@ func WithIcons(setIcons func(*IconSet)) AskOpt {
 	}
 }
 
+// WithShowCursor sets the show cursor behavior when prompting the user
+func WithShowCursor(ShowCursor bool) AskOpt {
+	return func(options *AskOptions) error {
+		// set the page size
+		options.PromptConfig.ShowCursor = ShowCursor
+
+		// nothing went wrong
+		return nil
+	}
+}
+
 /*
 AskOne performs the prompt for a single prompt and asks for validation if required.
 Response types should be something that can be casted from the response type designated