292 lines
8.0 KiB
Go
292 lines
8.0 KiB
Go
package prompt
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import "fmt"
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// Option is the type to replace default parameters.
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// prompt.New accepts any number of options (this is functional option pattern).
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type Option func(prompt *Prompt) error
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// OptionParser to set a custom ConsoleParser object. An argument should implement ConsoleParser interface.
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func OptionParser(x ConsoleParser) Option {
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return func(p *Prompt) error {
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p.in = x
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return nil
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}
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}
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// OptionWriter to set a custom ConsoleWriter object. An argument should implement ConsoleWriter interface.
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func OptionWriter(x ConsoleWriter) Option {
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return func(p *Prompt) error {
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registerConsoleWriter(x)
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p.rendererOptions = append(p.rendererOptions, func(r *Renderer) {
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r.out = x
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})
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return nil
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}
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}
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// OptionTitle to set title displayed at the header bar of terminal.
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func OptionTitle(x string) Option {
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return func(p *Prompt) error {
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p.rendererOptions = append(p.rendererOptions, func(r *Renderer) {
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r.title = x
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})
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return nil
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}
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}
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// OptionPrefix to set prefix string.
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func OptionPrefix(x string) Option {
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return func(p *Prompt) error {
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p.rendererOptions = append(p.rendererOptions, func(r *Renderer) {
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r.prefix = x
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})
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return nil
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}
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}
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// OptionCompletionWordSeparator to set word separators. Enable only ' ' if empty.
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func OptionCompletionWordSeparator(x string) Option {
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return func(p *Prompt) error {
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p.completion.wordSeparator = x
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return nil
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}
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}
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// OptionLivePrefix to change the prefix dynamically by callback function
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func OptionLivePrefix(f func() (prefix string, useLivePrefix bool)) Option {
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return func(p *Prompt) error {
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p.rendererOptions = append(p.rendererOptions, func(r *Renderer) {
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r.livePrefixCallback = f
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})
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return nil
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}
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}
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// OptionPrefixTextColor change a text color of prefix string
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func OptionPrefixTextColor(x Color) Option {
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return func(p *Prompt) error {
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p.rendererOptions = append(p.rendererOptions, func(r *Renderer) {
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r.prefixTextColor = x
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})
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return nil
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}
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}
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// OptionPrefixBackgroundColor to change a background color of prefix string
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func OptionPrefixBackgroundColor(x Color) Option {
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return func(p *Prompt) error {
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p.rendererOptions = append(p.rendererOptions, func(r *Renderer) {
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r.prefixBGColor = x
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})
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return nil
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}
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}
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// OptionInputTextColor to change a color of text which is input by user
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func OptionInputTextColor(x Color) Option {
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return func(p *Prompt) error {
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p.rendererOptions = append(p.rendererOptions, func(r *Renderer) {
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r.inputTextColor = x
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})
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return nil
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}
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}
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// OptionInputBGColor to change a color of background which is input by user
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func OptionInputBGColor(x Color) Option {
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return func(p *Prompt) error {
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p.rendererOptions = append(p.rendererOptions, func(r *Renderer) {
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r.inputBGColor = x
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})
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return nil
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}
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}
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// OptionPreviewSuggestionTextColor to change a text color which is completed
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func OptionPreviewSuggestionTextColor(x Color) Option {
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return func(p *Prompt) error {
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p.rendererOptions = append(p.rendererOptions, func(r *Renderer) {
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r.previewSuggestionTextColor = x
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})
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return nil
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}
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}
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// OptionPreviewSuggestionBGColor to change a background color which is completed
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func OptionPreviewSuggestionBGColor(x Color) Option {
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return func(p *Prompt) error {
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p.rendererOptions = append(p.rendererOptions, func(r *Renderer) {
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r.previewSuggestionBGColor = x
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})
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return nil
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}
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}
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// OptionSuggestionTextColor to change a text color in drop down suggestions.
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func OptionSuggestionTextColor(x Color) Option {
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return func(p *Prompt) error {
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p.rendererOptions = append(p.rendererOptions, func(r *Renderer) {
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r.suggestionTextColor = x
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})
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return nil
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}
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}
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// OptionSuggestionBGColor change a background color in drop down suggestions.
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func OptionSuggestionBGColor(x Color) Option {
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return func(p *Prompt) error {
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p.rendererOptions = append(p.rendererOptions, func(r *Renderer) {
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r.suggestionBGColor = x
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})
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return nil
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}
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}
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// OptionSelectedSuggestionTextColor to change a text color for completed text which is selected inside suggestions drop down box.
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func OptionSelectedSuggestionTextColor(x Color) Option {
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return func(p *Prompt) error {
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p.rendererOptions = append(p.rendererOptions, func(r *Renderer) {
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r.selectedSuggestionTextColor = x
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})
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return nil
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}
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}
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// OptionSelectedSuggestionBGColor to change a background color for completed text which is selected inside suggestions drop down box.
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func OptionSelectedSuggestionBGColor(x Color) Option {
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return func(p *Prompt) error {
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p.rendererOptions = append(p.rendererOptions, func(r *Renderer) {
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r.selectedSuggestionBGColor = x
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})
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return nil
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}
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}
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// OptionDescriptionTextColor to change a background color of description text in drop down suggestions.
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func OptionDescriptionTextColor(x Color) Option {
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return func(p *Prompt) error {
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p.rendererOptions = append(p.rendererOptions, func(r *Renderer) {
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r.selectedDescriptionTextColor = x
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})
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return nil
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}
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}
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// OptionDescriptionBGColor to change a background color of description text in drop down suggestions.
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func OptionDescriptionBGColor(x Color) Option {
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return func(p *Prompt) error {
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p.rendererOptions = append(p.rendererOptions, func(r *Renderer) {
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r.selectedDescriptionBGColor = x
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})
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return nil
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}
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}
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// OptionSelectedDescriptionTextColor to change a text color of description which is selected inside suggestions drop down box.
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func OptionSelectedDescriptionTextColor(x Color) Option {
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return func(p *Prompt) error {
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p.rendererOptions = append(p.rendererOptions, func(r *Renderer) {
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r.selectedDescriptionTextColor = x
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})
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return nil
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}
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}
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// OptionSelectedDescriptionBGColor to change a background color of description which is selected inside suggestions drop down box.
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func OptionSelectedDescriptionBGColor(x Color) Option {
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return func(p *Prompt) error {
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p.rendererOptions = append(p.rendererOptions, func(r *Renderer) {
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r.selectedDescriptionBGColor = x
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})
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return nil
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}
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}
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// OptionScrollbarThumbColor to change a thumb color on scrollbar.
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func OptionScrollbarThumbColor(x Color) Option {
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return func(p *Prompt) error {
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p.rendererOptions = append(p.rendererOptions, func(r *Renderer) {
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r.scrollbarThumbColor = x
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})
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return nil
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}
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}
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// OptionScrollbarBGColor to change a background color of scrollbar.
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func OptionScrollbarBGColor(x Color) Option {
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return func(p *Prompt) error {
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p.rendererOptions = append(p.rendererOptions, func(r *Renderer) {
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r.scrollbarBGColor = x
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})
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return nil
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}
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}
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// OptionMaxSuggestion specify the max number of displayed suggestions.
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func OptionMaxSuggestion(x uint16) Option {
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return func(p *Prompt) error {
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p.completion.max = x
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return nil
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}
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}
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// OptionHistory to set history expressed by string array.
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func OptionHistory(x []string) Option {
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return func(p *Prompt) error {
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p.history.histories = x
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p.history.Clear()
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return nil
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}
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}
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// OptionSwitchKeyBindMode set a key bind mode.
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func OptionSwitchKeyBindMode(m KeyBindMode) Option {
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return func(p *Prompt) error {
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p.keyBindMode = m
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return nil
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}
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}
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// OptionAddKeyBind to set a custom key bind.
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func OptionAddKeyBind(b ...KeyBind) Option {
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return func(p *Prompt) error {
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p.keyBindings = append(p.keyBindings, b...)
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return nil
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}
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}
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// OptionAddASCIICodeBind to set a custom key bind.
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func OptionAddASCIICodeBind(b ...ASCIICodeBind) Option {
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return func(p *Prompt) error {
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p.ASCIICodeBindings = append(p.ASCIICodeBindings, b...)
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return nil
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}
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}
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// New returns a Prompt with powerful auto-completion.
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func New(executor Executor, completer Completer, opts ...Option) *Prompt {
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defaultWriter, err := NewStandardOutputWriter()
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if err != nil {
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panic(fmt.Sprintf("new stdout writer: %s", err))
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}
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registerConsoleWriter(defaultWriter)
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pt := &Prompt{
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in: NewStandardInputParser(),
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rendererOptions: make([]RendererOption, 0, 12),
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buf: NewBuffer(),
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executor: executor,
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history: NewHistory(),
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completion: NewCompletionManager(completer, 6),
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keyBindMode: EmacsKeyBind, // All the above assume that bash is running in the default Emacs setting
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}
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for _, opt := range opts {
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if err := opt(pt); err != nil {
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panic(err)
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}
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}
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return pt
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}
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