113 lines
2.5 KiB
Go
113 lines
2.5 KiB
Go
package widget
|
|
|
|
import (
|
|
"errors"
|
|
|
|
"fyne.io/fyne/v2"
|
|
"fyne.io/fyne/v2/canvas"
|
|
"fyne.io/fyne/v2/theme"
|
|
)
|
|
|
|
var _ fyne.Validatable = (*Entry)(nil)
|
|
|
|
// Validate validates the current text in the widget
|
|
func (e *Entry) Validate() error {
|
|
if e.Validator == nil {
|
|
return nil
|
|
}
|
|
|
|
err := e.Validator(e.Text)
|
|
e.SetValidationError(err)
|
|
return err
|
|
}
|
|
|
|
// SetOnValidationChanged is intended for parent widgets or containers to hook into the validation.
|
|
// The function might be overwritten by a parent that cares about child validation (e.g. widget.Form).
|
|
func (e *Entry) SetOnValidationChanged(callback func(error)) {
|
|
e.onValidationChanged = callback
|
|
}
|
|
|
|
// SetValidationError manually updates the validation status until the next input change
|
|
func (e *Entry) SetValidationError(err error) {
|
|
if e.Validator == nil {
|
|
return
|
|
}
|
|
if err == nil && e.validationError == nil {
|
|
return
|
|
}
|
|
|
|
if !errors.Is(err, e.validationError) {
|
|
e.validationError = err
|
|
|
|
if e.onValidationChanged != nil {
|
|
e.onValidationChanged(err)
|
|
}
|
|
|
|
e.Refresh()
|
|
}
|
|
}
|
|
|
|
var _ fyne.Widget = (*validationStatus)(nil)
|
|
|
|
type validationStatus struct {
|
|
BaseWidget
|
|
entry *Entry
|
|
}
|
|
|
|
func newValidationStatus(e *Entry) *validationStatus {
|
|
rs := &validationStatus{
|
|
entry: e,
|
|
}
|
|
|
|
rs.ExtendBaseWidget(rs)
|
|
return rs
|
|
}
|
|
|
|
func (r *validationStatus) CreateRenderer() fyne.WidgetRenderer {
|
|
icon := &canvas.Image{}
|
|
icon.Hide()
|
|
return &validationStatusRenderer{
|
|
WidgetRenderer: NewSimpleRenderer(icon),
|
|
icon: icon,
|
|
entry: r.entry,
|
|
}
|
|
}
|
|
|
|
var _ fyne.WidgetRenderer = (*validationStatusRenderer)(nil)
|
|
|
|
type validationStatusRenderer struct {
|
|
fyne.WidgetRenderer
|
|
entry *Entry
|
|
icon *canvas.Image
|
|
}
|
|
|
|
func (r *validationStatusRenderer) Layout(size fyne.Size) {
|
|
r.icon.Resize(fyne.NewSize(theme.IconInlineSize(), theme.IconInlineSize()))
|
|
r.icon.Move(fyne.NewPos((size.Width-theme.IconInlineSize())/2, (size.Height-theme.IconInlineSize())/2))
|
|
}
|
|
|
|
func (r *validationStatusRenderer) MinSize() fyne.Size {
|
|
return fyne.NewSize(theme.IconInlineSize(), theme.IconInlineSize())
|
|
}
|
|
|
|
func (r *validationStatusRenderer) Refresh() {
|
|
r.entry.propertyLock.RLock()
|
|
defer r.entry.propertyLock.RUnlock()
|
|
if r.entry.disabled {
|
|
r.icon.Hide()
|
|
return
|
|
}
|
|
|
|
if r.entry.validationError == nil && r.entry.Text != "" {
|
|
r.icon.Resource = theme.ConfirmIcon()
|
|
r.icon.Show()
|
|
} else if r.entry.validationError != nil && !r.entry.focused && r.entry.dirty {
|
|
r.icon.Resource = theme.NewErrorThemedResource(theme.ErrorIcon())
|
|
r.icon.Show()
|
|
} else {
|
|
r.icon.Hide()
|
|
}
|
|
|
|
r.icon.Refresh()
|
|
}
|