Update InteractiveMultiselectPrinter to optionally show selected options

_examples/interactive_multiselect/show-selected-options/README.md

@@ -0,0 +1,36 @@
+# interactive_multiselect/show_selected_options
+
+```go
+package main
+
+import (
+	"fmt"
+
+	"github.com/pterm/pterm"
+)
+
+func main() {
+	// Initialize an empty slice to hold the options.
+	var options []string
+
+	// Populate the options slice with 100 options.
+	for i := 0; i < 100; i++ {
+		options = append(options, fmt.Sprintf("Option %d", i))
+	}
+
+	// Add 5 more options to the slice, indicating the availability of fuzzy searching.
+	for i := 0; i < 5; i++ {
+		options = append(options, fmt.Sprintf("You can use fuzzy searching (%d)", i))
+	}
+
+	// Use PTerm's interactive multiselect to present the options to the user and capture their selections.
+	// The Show() method displays the options and waits for user input.
+	selectedOptions, _ := pterm.DefaultInteractiveMultiselect.
+		WithOptions(options).
+		WithShowSelectedOptions(true).
+		Show()
+
+	// Print the selected options, highlighted in green.
+	pterm.Info.Printfln("Selected options: %s", pterm.Green(selectedOptions))
+}
+```

_examples/interactive_multiselect/show-selected-options/main.go

@@ -0,0 +1,27 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/pterm/pterm"
+)
+
+func main() {
+	// Initialize an empty slice to hold the options.
+	var options []string
+
+	// Populate the options slice with 100 options.
+	for i := 0; i < 100; i++ {
+		options = append(options, fmt.Sprintf("Option %d", i))
+	}
+
+	// Use PTerm's interactive multiselect to present the options to the user and capture their selections.
+	// The Show() method displays the options and waits for user input.
+	selectedOptions, _ := pterm.DefaultInteractiveMultiselect.
+		WithOptions(options).
+		WithShowSelectedOptions(true).
+		Show()
+
+	// Print the selected options, highlighted in green.
+	pterm.Info.Printfln("Selected options: %s", pterm.Green(selectedOptions))
+}

interactive_multiselect_printer.go

@@ -2,13 +2,15 @@
 
 import (
 	"fmt"
-	"sort"
 
 	"atomicgo.dev/cursor"
 	"atomicgo.dev/keyboard"
 	"atomicgo.dev/keyboard/keys"
 	"github.com/lithammer/fuzzysearch/fuzzy"
 
+	"sort"
+	"strings"
+
 	"github.com/pterm/pterm/internal"
 )
 
@@ -32,17 +34,18 @@
 
 // InteractiveMultiselectPrinter is a printer for interactive multiselect menus.
 type InteractiveMultiselectPrinter struct {
-	DefaultText     string
-	TextStyle       *Style
-	Options         []string
-	OptionStyle     *Style
-	DefaultOptions  []string
-	MaxHeight       int
-	Selector        string
-	SelectorStyle   *Style
-	Filter          bool
-	Checkmark       *Checkmark
-	OnInterruptFunc func()
+	DefaultText         string
+	TextStyle           *Style
+	Options             []string
+	OptionStyle         *Style
+	DefaultOptions      []string
+	MaxHeight           int
+	Selector            string
+	SelectorStyle       *Style
+	Filter              bool
+	Checkmark           *Checkmark
+	OnInterruptFunc     func()
+	ShowSelectedOptions bool
 
 	selectedOption        int
 	selectedOptions       []int
@@ -110,12 +113,18 @@
 	return &p
 }
 
-// OnInterrupt sets the function to execute on exit of the input reader
+// WithOnInterruptFunc sets the function to execute on exit of the input reader
 func (p InteractiveMultiselectPrinter) WithOnInterruptFunc(exitFunc func()) *InteractiveMultiselectPrinter {
 	p.OnInterruptFunc = exitFunc
 	return &p
 }
 
+// WithShowSelectedOptions shows the selected options at the bottom if the menu
+func (p InteractiveMultiselectPrinter) WithShowSelectedOptions(b ...bool) *InteractiveMultiselectPrinter {
+	p.ShowSelectedOptions = internal.WithBoolean(b)
+	return &p
+}
+
 // Show shows the interactive multiselect menu and returns the selected entry.
 func (p *InteractiveMultiselectPrinter) Show(text ...string) ([]string, error) {
 	// should be the first defer statement to make sure it is executed last
@@ -379,10 +388,20 @@
 
 	help := fmt.Sprintf("%s: %s | %s: %s | left: %s | right: %s", p.KeySelect, Bold.Sprint("select"), p.KeyConfirm, Bold.Sprint("confirm"), Bold.Sprint("none"), Bold.Sprint("all"))
 	if p.Filter {
-		help += fmt.Sprintf("| type to %s", Bold.Sprint("filter"))
+		help += fmt.Sprintf(" | type to %s", Bold.Sprint("filter"))
 	}
 	content += ThemeDefault.SecondaryStyle.Sprintfln(help)
 
+	// Optionally, add selected options to the menu
+	if p.ShowSelectedOptions && len(p.selectedOptions) > 0 {
+		selected := make([]string, len(p.selectedOptions))
+		for i, optIdx := range p.selectedOptions {
+			selected[i] = p.Options[optIdx]
+		}
+
+		content += ThemeDefault.SecondaryStyle.Sprint("Selected: ") + Green(strings.Join(selected, Gray(", "))) + "\n"
+	}
+
 	return content
 }