mirror of https://github.com/rivo/tview.git
82 lines
1.6 KiB
Go
82 lines
1.6 KiB
Go
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package main
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import (
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"encoding/json"
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"net/http"
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"net/url"
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"strings"
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"sync"
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"github.com/gdamore/tcell"
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"github.com/rivo/tview"
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)
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type company struct {
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Name string `json:name`
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}
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func main() {
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app := tview.NewApplication()
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inputField := tview.NewInputField().
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SetLabel("Enter a company name: ").
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SetFieldWidth(30).
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SetDoneFunc(func(key tcell.Key) {
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app.Stop()
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})
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// Set up autocomplete function.
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var mutex sync.Mutex
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prefixMap := make(map[string][]string)
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inputField.SetAutocompleteFunc(func(currentText string) []string {
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// Ignore empty text.
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prefix := strings.TrimSpace(strings.ToLower(currentText))
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if prefix == "" {
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return nil
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}
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// Do we have entries for this text already?
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mutex.Lock()
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defer mutex.Unlock()
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entries, ok := prefixMap[prefix]
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if ok {
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return entries
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}
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// No entries yet. Issue a request to the API in a goroutine.
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go func() {
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// Ignore errors in this demo.
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url := "https://autocomplete.clearbit.com/v1/companies/suggest?query=" + url.QueryEscape(prefix)
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res, err := http.Get(url)
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if err != nil {
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return
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}
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// Store the result in the prefix map.
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var companies []*company
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dec := json.NewDecoder(res.Body)
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if err := dec.Decode(&companies); err != nil {
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return
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}
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entries := make([]string, 0, len(companies))
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for _, c := range companies {
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entries = append(entries, c.Name)
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}
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mutex.Lock()
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prefixMap[prefix] = entries
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mutex.Unlock()
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// Trigger an update to the input field.
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inputField.Autocomplete()
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// Also redraw the screen.
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app.Draw()
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}()
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return nil
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})
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if err := app.SetRoot(inputField, true).Run(); err != nil {
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panic(err)
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}
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}
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