forked from lucky41/entropy
/
form_field.go
204 lines (169 loc) · 4.76 KB
/
form_field.go
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package entropy
import (
"fmt"
"html/template"
v "github.com/codebear4/entropy/validators"
)
type IField interface {
Label(class string, attrs []string) template.HTML
Render(class string, attrs []string) template.HTML
Validate() (bool, string)
GetName() string
GetValue() string
SetValue(value string)
IsName(name string) bool
}
type BaseField struct {
name string
label string
value string
validators []IValidator
}
func (field *BaseField) Label(class string, attrs []string) template.HTML {
attrsStr := ""
if len(attrs) > 0 {
for _, attr := range attrs {
attrsStr += " " + template.HTMLEscapeString(attr)
}
}
return template.HTML(fmt.Sprintf(`<label for="%s" class="%s" %s>%s</label>`, field.name, class, attrsStr, field.label))
}
func (field *BaseField) Render(class string, attrs []string) template.HTML {
return template.HTML("")
}
func (field *BaseField) GetName() string {
return field.name
}
func (field *BaseField) Validate() (bool, string) {
// 如果有Required并且输入为空,不再进行其他检查
for _, validator := range field.validators {
if _, ok := validator.(v.Required); ok {
if ok, message := validator.Verify(field.GetValue()); !ok {
return false, field.label + message
}
}
}
result := true
msg := ""
for _, validator := range field.validators {
if ok, message := validator.Verify(field.GetValue()); !ok {
result = false
msg = message
}
}
return result, msg
}
func (field *BaseField) GetValue() string {
return field.value
}
func (field *BaseField) SetValue(value string) {
field.value = value
}
func (field *BaseField) IsName(name string) bool {
return field.name == name
}
type TextField struct {
BaseField
}
func (field *TextField) Render(class string, attrs []string) template.HTML {
attrsStr := ""
if len(attrs) > 0 {
for _, attr := range attrs {
attrsStr += " " + template.HTMLEscapeString(attr)
}
}
field.value = template.HTMLEscapeString(field.value)
return template.HTML(fmt.Sprintf(`<input type="text" class="%s" value="%s" name=%q id=%q%s>`, class, field.value, field.name, field.name, attrsStr))
}
func NewTextField(name string, label string, value string, validators ...IValidator) *TextField {
field := TextField{}
field.name = name
field.label = label
field.value = value
field.validators = validators
return &field
}
type PasswordField struct {
BaseField
}
func (field *PasswordField) Render(class string, attrs []string) template.HTML {
attrsStr := ""
if len(attrs) > 0 {
for _, attr := range attrs {
attrsStr += " " + attr
}
}
return template.HTML(fmt.Sprintf(`<input type="password" class="%s" name=%q id=%q%s>`, class, field.name, field.name, attrsStr))
}
func NewPasswordField(name string, label string, validators ...IValidator) *PasswordField {
field := PasswordField{}
field.name = name
field.label = label
field.validators = validators
return &field
}
type TextArea struct {
BaseField
}
func (field *TextArea) Render(class string, attrs []string) template.HTML {
attrsStr := ""
if len(attrs) > 0 {
for _, attr := range attrs {
attrsStr += " " + attr
}
}
return template.HTML(fmt.Sprintf(`<textarea id="%s" class="%s" name="%s" %s>%s</textarea>`, field.name, class, field.name, attrsStr, field.value))
}
func NewTextArea(name string, label string, value string, validators ...IValidator) *TextArea {
field := TextArea{}
field.name = name
field.label = label
field.value = value
field.validators = validators
return &field
}
type Choice struct {
Value string
Label string
}
type SelectField struct {
BaseField
Choices []Choice
}
func (field *SelectField) Render(class string, attrs []string) template.HTML {
attrsStr := ""
if len(attrs) > 0 {
for _, attr := range attrs {
attrsStr += " " + attr
}
}
options := ""
for _, choice := range field.Choices {
selected := ""
if choice.Value == field.value {
selected = " selected"
}
options += fmt.Sprintf(`<option value="%s" %s>%s</option>`, choice.Value, selected, choice.Label)
}
return template.HTML(fmt.Sprintf(`<select id="%s" class="%s" name="%s" %s>%s</select>`, field.name, class, field.name, attrsStr, options))
}
func NewSelectField(name string, label string, choices []Choice, defaultValue string, validators ...IValidator) *SelectField {
field := SelectField{}
field.name = name
field.label = label
field.value = defaultValue
field.Choices = choices
return &field
}
type HiddenField struct {
BaseField
}
func (field *HiddenField) Render(class string, attrs []string) template.HTML {
return template.HTML(fmt.Sprintf(`<input type="hidden" class="%s" value=%q name=%q id=%q>`, class, field.value, field.name, field.name))
}
func NewHiddenField(name string, value string) *HiddenField {
field := HiddenField{}
field.name = name
field.value = value
return &field
}