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controls.go
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controls.go
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package forms
import (
"fmt"
"strings"
)
type Checkbox struct {
RenderableImpl[Checkbox]
Template
TemplateStyle
Field
TagOpts
*Binding[bool]
UpdateFormOnChange bool
}
func (Checkbox) DefaultTemplate() string { return "control-checkbox" }
func (c *Checkbox) Finalize(state *State) {
}
func (c *Checkbox) Process(*FormData) {
c.Binding.SetString(c.RawFormValue, parseBool)
}
type CheckboxWithLabel struct {
Checkbox
Label any
}
func (CheckboxWithLabel) DefaultTemplate() string { return "control-checkbox-labeled" }
type InputWellOpts struct {
LeftLabel string
LeftLabelTag TagOpts
RightLabel string
RightLabelTag TagOpts
}
type InputText struct {
RenderableImpl[InputText]
Template
TemplateStyle
Field
TagOpts
*Binding[string]
Required bool
MinLen int
MaxLen int
Placeholder string
}
func (InputText) DefaultTemplate() string { return "control-input-text" }
func (c *InputText) Finalize(state *State) {
c.Binding.Validate(func(value string) (string, error) {
value = strings.TrimSpace(value)
if value == "" && c.Required {
return value, ErrRequired
}
if len(value) < c.MinLen {
return value, fmt.Errorf("must be %d+ chars", c.MinLen)
}
if c.MaxLen > 0 && len(value) > c.MaxLen {
return value, fmt.Errorf("cannot be longer than %d chars", c.MaxLen)
}
return value, nil
})
}
func (c *InputText) Process(*FormData) {
c.Binding.Set(c.RawFormValue)
}
type InputInt struct {
RenderableImpl[InputInt]
Template
TemplateStyle
Field
TagOpts
*Binding[int]
InputWellOpts
Min int
Max int
Step int
HasMin bool
HasMax bool
}
func (InputInt) DefaultTemplate() string { return "control-input-integer" }
func (c *InputInt) Finalize(state *State) {
if c.Min != 0 {
c.HasMin = true
}
if c.Max != 0 {
c.HasMax = true
}
c.Validate(func(value int) (int, error) {
if c.HasMin && value < c.Min {
return value, fmt.Errorf("cannot be less than %v", c.Min)
}
if c.HasMax && value > c.Max {
return value, fmt.Errorf("cannot be greater than %v", c.Max)
}
return value, nil
})
}
func (c *InputInt) Process(*FormData) {
if c.RawFormValue != "" {
c.Binding.SetString(c.RawFormValue, parseInt)
}
}
type InputInt64 struct {
RenderableImpl[InputInt64]
Template
TemplateStyle
Field
TagOpts
*Binding[int64]
InputWellOpts
Min int64
Max int64
HasMin bool
HasMax bool
Step int64
}
func (InputInt64) DefaultTemplate() string { return "control-input-integer" }
func (c *InputInt64) Finalize(state *State) {
if c.Min != 0 {
c.HasMin = true
}
if c.Max != 0 {
c.HasMax = true
}
c.Validate(func(value int64) (int64, error) {
if c.HasMin && value < c.Min {
return value, fmt.Errorf("cannot be less than %v", c.Min)
}
if c.HasMax && value > c.Max {
return value, fmt.Errorf("cannot be greater than %v", c.Max)
}
return value, nil
})
}
func (c *InputInt64) Process(*FormData) {
if c.RawFormValue != "" {
c.Binding.SetString(c.RawFormValue, parseInt64)
}
}
type InputFloat64 struct {
RenderableImpl[InputFloat64]
Template
TemplateStyle
Field
TagOpts
*Binding[float64]
InputWellOpts
Min float64
Max float64
HasMin bool
HasMax bool
Precision int
}
func (InputFloat64) DefaultTemplate() string { return "control-input-float" }
func (c *InputFloat64) Finalize(state *State) {
if c.Min != 0 {
c.HasMin = true
}
if c.Max != 0 {
c.HasMax = true
}
c.Validate(func(value float64) (float64, error) {
if c.HasMin && value < c.Min {
return value, fmt.Errorf("cannot be less than %v", c.Min)
}
if c.HasMax && value > c.Max {
return value, fmt.Errorf("cannot be greater than %v", c.Max)
}
return value, nil
})
}
func (c *InputFloat64) Process(*FormData) {
if c.RawFormValue != "" {
c.Binding.SetString(c.RawFormValue, parseFloat64)
}
}
type SpecialValue[T comparable] struct {
ModelValue T
PostbackValue string
}
type Button struct {
RenderableImpl[Button]
Template
TemplateStyle
Identity
TagOpts
Action string
FullAction string
Activated bool
Title string
Handler func()
ConfirmationMessage string
}
func (Button) DefaultTemplate() string { return "control-button" }
func (c *Button) Finalize(state *State) {
if c.Action == "" {
c.Action = "submit"
}
state.PushName(c.Action)
state.AssignIdentity(&c.Identity)
if c.FullAction == "" {
if c.Action == "submit" {
c.FullAction = "submit"
} else {
c.FullAction = c.FullName
}
}
}
func (c *Button) EnumFields(f func(name string, field *Field)) {
}
func (c *Button) EnumBindings(f func(AnyBinding)) {
}
func (c *Button) Process(fd *FormData) {
// log.Printf("Button.Process c.FullAction=%q fd.Action=%q", c.FullAction, fd.Action)
c.Activated = (fd.Action == c.FullAction)
if c.Activated && c.Handler != nil {
c.Handler()
}
}
type Hidden struct {
RenderableImpl[Hidden]
Template
TemplateStyle
Field
TagOpts
*Binding[string]
}
func (Hidden) DefaultTemplate() string { return "control-hidden" }
func (c *Hidden) Finalize(state *State) {}
func (c *Hidden) Process(*FormData) {
c.Binding.Set(c.RawFormValue)
}