owl-blogs/web/forms/widget.go

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package forms
import (
"fmt"
"reflect"
"strings"
)
type Widget interface {
Html() string
ParseValue(value string, output reflect.Value) error
}
type TextWidget struct {
FormField
}
func (s *TextWidget) Html() string {
html := ""
html += fmt.Sprintf("<input type=\"text\" name=\"%v\" value=\"%v\">\n", s.Name, s.Value.String())
return html
}
func (s *TextWidget) ParseValue(value string, output reflect.Value) error {
output.SetString(value)
return nil
}
type TextareaWidget struct {
FormField
}
func (s *TextareaWidget) Html() string {
html := ""
html += fmt.Sprintf("<textarea name=\"%v\" rows=\"20\">%v</textarea>\n", s.Name, s.Value.String())
return html
}
func (s *TextareaWidget) ParseValue(value string, output reflect.Value) error {
output.SetString(value)
return nil
}
type TextListWidget struct {
FormField
}
func (s *TextListWidget) Html() string {
valueList := s.Value.Interface().([]string)
value := strings.Join(valueList, "\n")
html := ""
html += fmt.Sprintf("<textarea name=\"%v\" rows=\"20\">%v</textarea>\n", s.Name, value)
return html
}
func (s *TextListWidget) ParseValue(value string, output reflect.Value) error {
list := strings.Split(value, "\n")
// trim entries
for i, item := range list {
list[i] = strings.TrimSpace(item)
}
// remove empty entries
for i := len(list) - 1; i >= 0; i-- {
if list[i] == "" {
list = append(list[:i], list[i+1:]...)
}
}
output.Set(reflect.ValueOf(list))
return nil
}