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Code Issues Projects Releases Wiki Activity

Improved binding for 2 args listeners

This commit is contained in:
Alexei Anoshenko 2025-06-18 13:24:53 +03:00
parent 3c3c09b043
commit 4b00299878
11 changed files with 502 additions and 616 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
colorPicker.go
View File

@ -106,13 +106,13 @@ func (picker *colorPickerData) propertyChanged(tag PropertyName) {
color := GetColorPickerValue(picker)
picker.Session().callFunc("setInputValue", picker.htmlID(), color.rgbString())
if listeners := GetColorChangedListeners(picker); len(listeners) > 0 {
if listeners := getTwoArgEventListeners[ColorPicker, Color](picker, nil, ColorChangedEvent); len(listeners) > 0 {
oldColor := Color(0)
if value := picker.getRaw("old-color"); value != nil {
oldColor = value.(Color)
}
for _, listener := range listeners {
listener(picker, color, oldColor)
listener.Run(picker, color, oldColor)
}
}
@ -156,8 +156,8 @@ func (picker *colorPickerData) handleCommand(self View, command PropertyName, da
oldColor := GetColorPickerValue(picker)
picker.properties[ColorPickerValue] = color
if color != oldColor {
for _, listener := range GetColorChangedListeners(picker) {
listener(picker, color, oldColor)
for _, listener := range getTwoArgEventListeners[ColorPicker, Color](picker, nil, ColorChangedEvent) {
listener.Run(picker, color, oldColor)
}
if listener, ok := picker.changeListener[ColorPickerValue]; ok {
listener(picker, ColorPickerValue)
@ -194,8 +194,17 @@ func GetColorPickerValue(view View, subviewID ...string) Color {
// GetColorChangedListeners returns the ColorChangedListener list of an ColorPicker subview.
// If there are no listeners then the empty list is returned
//
// Result elements can be of the following types:
// - func(rui.ColorPicker, rui.Color, rui.Color),
// - func(rui.ColorPicker, rui.Color),
// - func(rui.ColorPicker),
// - func(rui.Color, rui.Color),
// - func(rui.Color),
// - func(),
// - string.
//
// The second argument (subviewID) specifies the path to the child element whose value needs to be returned.
// If it is not specified then a value from the first argument (view) is returned.
func GetColorChangedListeners(view View, subviewID ...string) []func(ColorPicker, Color, Color) {
return getTwoArgEventListeners[ColorPicker, Color](view, subviewID, ColorChangedEvent)
func GetColorChangedListeners(view View, subviewID ...string) []any {
return getTwoArgEventRawListeners[ColorPicker, Color](view, subviewID, ColorChangedEvent)
}

21
datePicker.go
View File

@ -274,7 +274,7 @@ func (picker *datePickerData) propertyChanged(tag PropertyName) {
date := GetDatePickerValue(picker)
session.callFunc("setInputValue", picker.htmlID(), date.Format(dateFormat))
if listeners := GetDateChangedListeners(picker); len(listeners) > 0 {
if listeners := getTwoArgEventListeners[DatePicker, time.Time](picker, nil, DateChangedEvent); len(listeners) > 0 {
oldDate := time.Now()
if value := picker.getRaw("old-date"); value != nil {
if date, ok := value.(time.Time); ok {
@ -282,7 +282,7 @@ func (picker *datePickerData) propertyChanged(tag PropertyName) {
}
}
for _, listener := range listeners {
listener(picker, date, oldDate)
listener.Run(picker, date, oldDate)
}
}
@ -348,8 +348,8 @@ func (picker *datePickerData) handleCommand(self View, command PropertyName, dat
oldValue := GetDatePickerValue(picker)
picker.properties[DatePickerValue] = value
if value != oldValue {
for _, listener := range GetDateChangedListeners(picker) {
listener(picker, value, oldValue)
for _, listener := range getTwoArgEventListeners[DatePicker, time.Time](picker, nil, DateChangedEvent) {
listener.Run(picker, value, oldValue)
}
if listener, ok := picker.changeListener[DatePickerValue]; ok {
listener(picker, DatePickerValue)
@ -445,8 +445,17 @@ func GetDatePickerValue(view View, subviewID ...string) time.Time {
// GetDateChangedListeners returns the DateChangedListener list of an DatePicker subview.
// If there are no listeners then the empty list is returned
//
// Result elements can be of the following types:
// - func(rui.DatePicker, time.Time, time.Time),
// - func(rui.DatePicker, time.Time),
// - func(rui.DatePicker),
// - func(time.Time, time.Time),
// - func(time.Time),
// - func(),
// - string.
//
// The second argument (subviewID) specifies the path to the child element whose value needs to be returned.
// If it is not specified then a value from the first argument (view) is returned.
func GetDateChangedListeners(view View, subviewID ...string) []func(DatePicker, time.Time, time.Time) {
return getTwoArgEventListeners[DatePicker, time.Time](view, subviewID, DateChangedEvent)
func GetDateChangedListeners(view View, subviewID ...string) []any {
return getTwoArgEventRawListeners[DatePicker, time.Time](view, subviewID, DateChangedEvent)
}

21
dropDownList.go
View File

@ -104,8 +104,8 @@ func (list *dropDownListData) propertyChanged(tag PropertyName) {
list.Session().callFunc("selectDropDownListItem", list.htmlID(), current)
oldCurrent, _ := intProperty(list, "old-current", list.Session(), -1)
for _, listener := range GetDropDownListeners(list) {
listener(list, current, oldCurrent)
for _, listener := range getTwoArgEventListeners[DropDownList, int](list, nil, DropDownEvent) {
listener.Run(list, current, oldCurrent)
}
default:
@ -245,8 +245,8 @@ func (list *dropDownListData) handleCommand(self View, command PropertyName, dat
if GetCurrent(list) != number && number >= 0 && number < len(items) {
old := GetCurrent(list)
list.properties[Current] = number
for _, listener := range GetDropDownListeners(list) {
listener(list, number, old)
for _, listener := range getTwoArgEventListeners[DropDownList, int](list, nil, DropDownEvent) {
listener.Run(list, number, old)
}
if listener, ok := list.changeListener[Current]; ok {
listener(list, Current)
@ -265,10 +265,19 @@ func (list *dropDownListData) handleCommand(self View, command PropertyName, dat
// GetDropDownListeners returns the "drop-down-event" listener list. If there are no listeners then the empty list is returned.
//
// Result elements can be of the following types:
// - func(rui.DropDownList, int, int),
// - func(rui.DropDownList, int),
// - func(rui.DropDownList),
// - func(int, int),
// - func(int),
// - func(),
// - string.
//
// The second argument (subviewID) specifies the path to the child element whose value needs to be returned.
// If it is not specified then a value from the first argument (view) is returned.
func GetDropDownListeners(view View, subviewID ...string) []func(DropDownList, int, int) {
return getTwoArgEventListeners[DropDownList, int](view, subviewID, DropDownEvent)
func GetDropDownListeners(view View, subviewID ...string) []any {
return getTwoArgEventRawListeners[DropDownList, int](view, subviewID, DropDownEvent)
}
// GetDropDownItems return the DropDownList items list.

17
editView.go
View File

@ -268,8 +268,8 @@ func (edit *editViewData) AppendText(text string) {
}
func (edit *editViewData) textChanged(newText, oldText string) {
for _, listener := range GetTextChangedListeners(edit) {
listener(edit, newText, oldText)
for _, listener := range getTwoArgEventListeners[EditView, string](edit, nil, EditTextChangedEvent) {
listener.Run(edit, newText, oldText)
}
if listener, ok := edit.changeListener[Text]; ok {
listener(edit, Text)
@ -461,10 +461,19 @@ func IsSpellcheck(view View, subviewID ...string) bool {
// GetTextChangedListeners returns the TextChangedListener list of an EditView or MultiLineEditView subview.
// If there are no listeners then the empty list is returned
//
// Result elements can be of the following types:
// - func(rui.EditView, string, string),
// - func(rui.EditView, string),
// - func(rui.EditView),
// - func(string, string),
// - func(string),
// - func(),
// - string.
//
// The second argument (subviewID) specifies the path to the child element whose value needs to be returned.
// If it is not specified then a value from the first argument (view) is returned.
func GetTextChangedListeners(view View, subviewID ...string) []func(EditView, string, string) {
return getTwoArgEventListeners[EditView, string](view, subviewID, EditTextChangedEvent)
func GetTextChangedListeners(view View, subviewID ...string) []any {
return getTwoArgEventRawListeners[EditView, string](view, subviewID, EditTextChangedEvent)
}
// GetEditViewType returns a value of the Type property of EditView.

583
events.go
View File

@ -41,161 +41,32 @@ var eventJsFunc = map[PropertyName]struct{ jsEvent, jsFunc string }{
DragLeaveEvent: {jsEvent: "ondragleave", jsFunc: "dragLeaveEvent"},
}
/*
type oneArgListener[V View, E any] interface {
call(V, E)
listener() func(V, E)
rawListener() any
func viewEventsHtml[T any](view View, events []PropertyName, buffer *strings.Builder) {
for _, tag := range events {
if js, ok := eventJsFunc[tag]; ok {
if value := getOneArgEventListeners[View, T](view, nil, tag); len(value) > 0 {
buffer.WriteString(js.jsEvent)
buffer.WriteString(`="`)
buffer.WriteString(js.jsFunc)
buffer.WriteString(`(this, event)" `)
}
type oneArgListener0[V View, E any] struct {
fn func()
}
type oneArgListenerV[V View, E any] struct {
fn func(V)
}
type oneArgListenerE[V View, E any] struct {
fn func(E)
}
type oneArgListenerVE[V View, E any] struct {
fn func(V, E)
}
type oneArgListenerBinding[V View, E any] struct {
name string
}
func newOneArgListener0[V View, E any](fn func()) oneArgListener[V, E] {
obj := new(oneArgListener0[V, E])
obj.fn = fn
return obj
}
func (data *oneArgListener0[V, E]) call(_ V, _ E) {
data.fn()
}
func (data *oneArgListener0[V, E]) listener() func(V, E) {
return data.call
}
func (data *oneArgListener0[V, E]) rawListener() any {
return data.fn
}
func newOneArgListenerV[V View, E any](fn func(V)) oneArgListener[V, E] {
obj := new(oneArgListenerV[V, E])
obj.fn = fn
return obj
}
func (data *oneArgListenerV[V, E]) call(view V, _ E) {
data.fn(view)
}
func (data *oneArgListenerV[V, E]) listener() func(V, E) {
return data.call
}
func (data *oneArgListenerV[V, E]) rawListener() any {
return data.fn
}
func newOneArgListenerE[V View, E any](fn func(E)) oneArgListener[V, E] {
obj := new(oneArgListenerE[V, E])
obj.fn = fn
return obj
}
func (data *oneArgListenerE[V, E]) call(_ V, event E) {
data.fn(event)
}
func (data *oneArgListenerE[V, E]) listener() func(V, E) {
return data.call
}
func (data *oneArgListenerE[V, E]) rawListener() any {
return data.fn
}
func newOneArgListenerVE[V View, E any](fn func(V, E)) oneArgListener[V, E] {
obj := new(oneArgListenerVE[V, E])
obj.fn = fn
return obj
}
func (data *oneArgListenerVE[V, E]) call(view V, arg E) {
data.fn(view, arg)
}
func (data *oneArgListenerVE[V, E]) listener() func(V, E) {
return data.fn
}
func (data *oneArgListenerVE[V, E]) rawListener() any {
return data.fn
}
func newOneArgListenerBinding[V View, E any](name string) oneArgListener[V, E] {
obj := new(oneArgListenerBinding[V, E])
obj.name = name
return obj
}
func (data *oneArgListenerBinding[V, E]) call(view V, event E) {
bind := view.binding()
if bind == nil {
ErrorLogF(`There is no a binding object for call "%s"`, data.name)
return
}
val := reflect.ValueOf(bind)
method := val.MethodByName(data.name)
if !method.IsValid() {
ErrorLogF(`The "%s" method is not valid`, data.name)
return
}
methodType := method.Type()
var args []reflect.Value = nil
switch methodType.NumIn() {
case 0:
args = []reflect.Value{}
case 1:
inType := methodType.In(0)
if inType == reflect.TypeOf(view) {
args = []reflect.Value{reflect.ValueOf(view)}
} else if inType == reflect.TypeOf(event) {
args = []reflect.Value{reflect.ValueOf(event)}
}
case 2:
if methodType.In(0) == reflect.TypeOf(view) && methodType.In(1) == reflect.TypeOf(event) {
args = []reflect.Value{reflect.ValueOf(view), reflect.ValueOf(event)}
}
}
if args != nil {
method.Call(args)
func updateEventListenerHtml(view View, tag PropertyName) {
if js, ok := eventJsFunc[tag]; ok {
value := view.getRaw(tag)
session := view.Session()
htmlID := view.htmlID()
if value == nil {
session.removeProperty(view.htmlID(), js.jsEvent)
} else {
ErrorLogF(`Unsupported prototype of "%s" method`, data.name)
session.updateProperty(htmlID, js.jsEvent, js.jsFunc+"(this, event)")
}
}
func (data *oneArgListenerBinding[V, E]) listener() func(V, E) {
return data.call
}
func (data *oneArgListenerBinding[V, E]) rawListener() any {
return data.name
}
*/
func valueToNoArgEventListeners[V any](view View, value any) ([]func(V), bool) {
if value == nil {
return nil, true
@ -303,326 +174,6 @@ func valueToNoArgEventListeners[V any](view View, value any) ([]func(V), bool) {
return nil, false
}
/*
func valueToOneArgEventListeners[V View, E any](view View, value any) ([]oneArgListener[V, E], bool) {
if value == nil {
return nil, true
}
switch value := value.(type) {
case string:
return []oneArgListener[V, E]{newOneArgListenerBinding[V, E](value)}, true
case func(V, E):
return []oneArgListener[V, E]{newOneArgListenerVE[V, E](value)}, true
case func(V):
return []oneArgListener[V, E]{newOneArgListenerV[V, E](value)}, true
case func(E):
return []oneArgListener[V, E]{newOneArgListenerE[V, E](value)}, true
case func():
return []oneArgListener[V, E]{newOneArgListener0[V, E](value)}, true
case []func(V, E):
result := make([]oneArgListener[V, E], 0, len(value))
for _, fn := range value {
if fn != nil {
result = append(result, newOneArgListenerVE[V, E](fn))
}
}
return result, len(result) > 0
case []func(E):
result := make([]oneArgListener[V, E], 0, len(value))
for _, fn := range value {
if fn != nil {
result = append(result, newOneArgListenerE[V, E](fn))
}
}
return result, len(result) > 0
case []func(V):
result := make([]oneArgListener[V, E], 0, len(value))
for _, fn := range value {
if fn != nil {
result = append(result, newOneArgListenerV[V, E](fn))
}
}
return result, len(result) > 0
case []func():
result := make([]oneArgListener[V, E], 0, len(value))
for _, fn := range value {
if fn != nil {
result = append(result, newOneArgListener0[V, E](fn))
}
}
return result, len(result) > 0
case []any:
result := make([]oneArgListener[V, E], 0, len(value))
for _, v := range value {
if v != nil {
switch v := v.(type) {
case func(V, E):
result = append(result, newOneArgListenerVE[V, E](v))
case func(E):
result = append(result, newOneArgListenerE[V, E](v))
case func(V):
result = append(result, newOneArgListenerV[V, E](v))
case func():
result = append(result, newOneArgListener0[V, E](v))
case string:
result = append(result, newOneArgListenerBinding[V, E](v))
default:
return nil, false
}
}
}
return result, len(result) > 0
}
return nil, false
}
*/
func valueToTwoArgEventListeners[V View, E any](view View, value any) ([]func(V, E, E), bool) {
if value == nil {
return nil, true
}
switch value := value.(type) {
case string:
fn := func(view V, val1 E, val2 E) {
bind := view.binding()
if bind == nil {
ErrorLogF(`There is no a binding object for call "%s"`, value)
return
}
val := reflect.ValueOf(bind)
method := val.MethodByName(value)
if !method.IsValid() {
ErrorLogF(`The "%s" method is not valid`, value)
return
}
methodType := method.Type()
var args []reflect.Value = nil
switch methodType.NumIn() {
case 0:
args = []reflect.Value{}
case 1:
inType := methodType.In(0)
if inType == reflect.TypeOf(view) {
args = []reflect.Value{reflect.ValueOf(view)}
} else if inType == reflect.TypeOf(val1) {
args = []reflect.Value{reflect.ValueOf(val1)}
}
case 2:
valType := reflect.TypeOf(val1)
if methodType.In(0) == reflect.TypeOf(view) && methodType.In(1) == valType {
args = []reflect.Value{reflect.ValueOf(view), reflect.ValueOf(val1)}
} else if methodType.In(0) == valType && methodType.In(1) == valType {
args = []reflect.Value{reflect.ValueOf(val1), reflect.ValueOf(val2)}
}
case 3:
valType := reflect.TypeOf(val1)
if methodType.In(0) == reflect.TypeOf(view) && methodType.In(1) == valType && methodType.In(2) == valType {
args = []reflect.Value{reflect.ValueOf(view), reflect.ValueOf(val1), reflect.ValueOf(val2)}
}
}
if args != nil {
method.Call(args)
} else {
ErrorLogF(`Unsupported prototype of "%s" method`, value)
}
}
return []func(V, E, E){fn}, true
case func(V, E, E):
return []func(V, E, E){value}, true
case func(V, E):
fn := func(v V, val, _ E) {
value(v, val)
}
return []func(V, E, E){fn}, true
case func(E, E):
fn := func(_ V, val, old E) {
value(val, old)
}
return []func(V, E, E){fn}, true
case func(E):
fn := func(_ V, val, _ E) {
value(val)
}
return []func(V, E, E){fn}, true
case func(V):
fn := func(v V, _, _ E) {
value(v)
}
return []func(V, E, E){fn}, true
case func():
fn := func(V, E, E) {
value()
}
return []func(V, E, E){fn}, true
case []func(V, E, E):
if len(value) == 0 {
return nil, true
}
for _, fn := range value {
if fn == nil {
return nil, false
}
}
return value, true
case []func(V, E):
count := len(value)
if count == 0 {
return nil, true
}
listeners := make([]func(V, E, E), count)
for i, fn := range value {
if fn == nil {
return nil, false
}
listeners[i] = func(view V, val, _ E) {
fn(view, val)
}
}
return listeners, true
case []func(E):
count := len(value)
if count == 0 {
return nil, true
}
listeners := make([]func(V, E, E), count)
for i, fn := range value {
if fn == nil {
return nil, false
}
listeners[i] = func(_ V, val, _ E) {
fn(val)
}
}
return listeners, true
case []func(E, E):
count := len(value)
if count == 0 {
return nil, true
}
listeners := make([]func(V, E, E), count)
for i, fn := range value {
if fn == nil {
return nil, false
}
listeners[i] = func(_ V, val, old E) {
fn(val, old)
}
}
return listeners, true
case []func(V):
count := len(value)
if count == 0 {
return nil, true
}
listeners := make([]func(V, E, E), count)
for i, fn := range value {
if fn == nil {
return nil, false
}
listeners[i] = func(view V, _, _ E) {
fn(view)
}
}
return listeners, true
case []func():
count := len(value)
if count == 0 {
return nil, true
}
listeners := make([]func(V, E, E), count)
for i, fn := range value {
if fn == nil {
return nil, false
}
listeners[i] = func(V, E, E) {
fn()
}
}
return listeners, true
case []any:
count := len(value)
if count == 0 {
return nil, true
}
listeners := make([]func(V, E, E), count)
for i, v := range value {
if v == nil {
return nil, false
}
switch fn := v.(type) {
case func(V, E, E):
listeners[i] = fn
case func(V, E):
listeners[i] = func(view V, val, _ E) {
fn(view, val)
}
case func(E, E):
listeners[i] = func(_ V, val, old E) {
fn(val, old)
}
case func(E):
listeners[i] = func(_ V, val, _ E) {
fn(val)
}
case func(V):
listeners[i] = func(view V, _, _ E) {
fn(view)
}
case func():
listeners[i] = func(V, E, E) {
fn()
}
default:
return nil, false
}
}
return listeners, true
}
return nil, false
}
func getNoArgEventListeners[V View](view View, subviewID []string, tag PropertyName) []func(V) {
if view = getSubview(view, subviewID); view != nil {
if value := view.Get(tag); value != nil {
@ -634,38 +185,6 @@ func getNoArgEventListeners[V View](view View, subviewID []string, tag PropertyN
return []func(V){}
}
/*
func getOneArgEventListeners[V View, E any](view View, subviewID []string, tag PropertyName) []oneArgListener[V, E] {
if view = getSubview(view, subviewID); view != nil {
if value := view.Get(tag); value != nil {
if result, ok := value.([]oneArgListener[V, E]); ok {
return result
}
}
}
return []oneArgListener[V, E]{}
}
func getOneArgEventRawListeners[V View, E any](view View, subviewID []string, tag PropertyName) []any {
listeners := getOneArgEventListeners[V, E](view, subviewID, tag)
result := make([]any, len(listeners))
for i, l := range listeners {
result[i] = l.rawListener()
}
return result
}
*/
func getTwoArgEventListeners[V View, E any](view View, subviewID []string, tag PropertyName) []func(V, E, E) {
if view = getSubview(view, subviewID); view != nil {
if value := view.Get(tag); value != nil {
if result, ok := value.([]func(V, E, E)); ok {
return result
}
}
}
return []func(V, E, E){}
}
func setNoArgEventListener[V View](view View, tag PropertyName, value any) []PropertyName {
if listeners, ok := valueToNoArgEventListeners[V](view, value); ok {
if len(listeners) > 0 {
@ -680,73 +199,3 @@ func setNoArgEventListener[V View](view View, tag PropertyName, value any) []Pro
notCompatibleType(tag, value)
return nil
}
/*
func setOneArgEventListener[V View, T any](view View, tag PropertyName, value any) []PropertyName {
if listeners, ok := valueToOneArgEventListeners[V, T](view, value); ok {
if len(listeners) > 0 {
view.setRaw(tag, listeners)
} else if view.getRaw(tag) != nil {
view.setRaw(tag, nil)
} else {
return []PropertyName{}
}
return []PropertyName{tag}
}
notCompatibleType(tag, value)
return nil
}
*/
func setTwoArgEventListener[V View, T any](view View, tag PropertyName, value any) []PropertyName {
listeners, ok := valueToTwoArgEventListeners[V, T](view, value)
if !ok {
notCompatibleType(tag, value)
return nil
}
if len(listeners) > 0 {
view.setRaw(tag, listeners)
} else if view.getRaw(tag) != nil {
view.setRaw(tag, nil)
} else {
return []PropertyName{}
}
return []PropertyName{tag}
}
func viewEventsHtml[T any](view View, events []PropertyName, buffer *strings.Builder) {
for _, tag := range events {
if js, ok := eventJsFunc[tag]; ok {
if value := getOneArgEventListeners[View, T](view, nil, tag); len(value) > 0 {
buffer.WriteString(js.jsEvent)
buffer.WriteString(`="`)
buffer.WriteString(js.jsFunc)
buffer.WriteString(`(this, event)" `)
}
}
/*if value := view.getRaw(tag); value != nil {
if js, ok := eventJsFunc[tag]; ok {
if listeners, ok := value.([] func(View, T)); ok && len(listeners) > 0 {
buffer.WriteString(js.jsEvent)
buffer.WriteString(`="`)
buffer.WriteString(js.jsFunc)
buffer.WriteString(`(this, event)" `)
}
}
}
*/
}
}
func updateEventListenerHtml(view View, tag PropertyName) {
if js, ok := eventJsFunc[tag]; ok {
value := view.getRaw(tag)
session := view.Session()
htmlID := view.htmlID()
if value == nil {
session.removeProperty(view.htmlID(), js.jsEvent)
} else {
session.updateProperty(htmlID, js.jsEvent, js.jsFunc+"(this, event)")
}
}
}

339
events2arg.go Normal file
View File

@ -0,0 +1,339 @@
package rui
import "reflect"
type twoArgListener[V View, E any] interface {
Run(V, E, E)
rawListener() any
}
type twoArgListener0[V View, E any] struct {
fn func()
}
type twoArgListenerV[V View, E any] struct {
fn func(V)
}
type twoArgListenerE[V View, E any] struct {
fn func(E)
}
type twoArgListenerVE[V View, E any] struct {
fn func(V, E)
}
type twoArgListenerEE[V View, E any] struct {
fn func(E, E)
}
type twoArgListenerVEE[V View, E any] struct {
fn func(V, E, E)
}
type twoArgListenerBinding[V View, E any] struct {
name string
}
func newTwoArgListener0[V View, E any](fn func()) twoArgListener[V, E] {
obj := new(twoArgListener0[V, E])
obj.fn = fn
return obj
}
func (data *twoArgListener0[V, E]) Run(_ V, _ E, _ E) {
data.fn()
}
func (data *twoArgListener0[V, E]) rawListener() any {
return data.fn
}
func newTwoArgListenerV[V View, E any](fn func(V)) twoArgListener[V, E] {
obj := new(twoArgListenerV[V, E])
obj.fn = fn
return obj
}
func (data *twoArgListenerV[V, E]) Run(view V, _ E, _ E) {
data.fn(view)
}
func (data *twoArgListenerV[V, E]) rawListener() any {
return data.fn
}
func newTwoArgListenerE[V View, E any](fn func(E)) twoArgListener[V, E] {
obj := new(twoArgListenerE[V, E])
obj.fn = fn
return obj
}
func (data *twoArgListenerE[V, E]) Run(_ V, arg E, _ E) {
data.fn(arg)
}
func (data *twoArgListenerE[V, E]) rawListener() any {
return data.fn
}
func newTwoArgListenerVE[V View, E any](fn func(V, E)) twoArgListener[V, E] {
obj := new(twoArgListenerVE[V, E])
obj.fn = fn
return obj
}
func (data *twoArgListenerVE[V, E]) Run(view V, arg E, _ E) {
data.fn(view, arg)
}
func (data *twoArgListenerVE[V, E]) rawListener() any {
return data.fn
}
func newTwoArgListenerEE[V View, E any](fn func(E, E)) twoArgListener[V, E] {
obj := new(twoArgListenerEE[V, E])
obj.fn = fn
return obj
}
func (data *twoArgListenerEE[V, E]) Run(_ V, arg1 E, arg2 E) {
data.fn(arg1, arg2)
}
func (data *twoArgListenerEE[V, E]) rawListener() any {
return data.fn
}
func newTwoArgListenerVEE[V View, E any](fn func(V, E, E)) twoArgListener[V, E] {
obj := new(twoArgListenerVEE[V, E])
obj.fn = fn
return obj
}
func (data *twoArgListenerVEE[V, E]) Run(view V, arg1 E, arg2 E) {
data.fn(view, arg1, arg2)
}
func (data *twoArgListenerVEE[V, E]) rawListener() any {
return data.fn
}
func newTwoArgListenerBinding[V View, E any](name string) twoArgListener[V, E] {
obj := new(twoArgListenerBinding[V, E])
obj.name = name
return obj
}
func (data *twoArgListenerBinding[V, E]) Run(view V, arg1 E, arg2 E) {
bind := view.binding()
if bind == nil {
ErrorLogF(`There is no a binding object for call "%s"`, data.name)
return
}
val := reflect.ValueOf(bind)
method := val.MethodByName(data.name)
if !method.IsValid() {
ErrorLogF(`The "%s" method is not valid`, data.name)
return
}
methodType := method.Type()
var args []reflect.Value = nil
switch methodType.NumIn() {
case 0:
args = []reflect.Value{}
case 1:
inType := methodType.In(0)
if inType == reflect.TypeOf(view) {
args = []reflect.Value{reflect.ValueOf(view)}
} else if inType == reflect.TypeOf(arg1) {
args = []reflect.Value{reflect.ValueOf(arg1)}
}
case 2:
valType := reflect.TypeOf(arg1)
if methodType.In(0) == reflect.TypeOf(view) && methodType.In(1) == valType {
args = []reflect.Value{reflect.ValueOf(view), reflect.ValueOf(arg1)}
} else if methodType.In(0) == valType && methodType.In(1) == valType {
args = []reflect.Value{reflect.ValueOf(arg1), reflect.ValueOf(arg2)}
}
case 3:
valType := reflect.TypeOf(arg1)
if methodType.In(0) == reflect.TypeOf(view) && methodType.In(1) == valType && methodType.In(2) == valType {
args = []reflect.Value{reflect.ValueOf(view), reflect.ValueOf(arg1), reflect.ValueOf(arg2)}
}
}
if args != nil {
method.Call(args)
} else {
ErrorLogF(`Unsupported prototype of "%s" method`, data.name)
}
}
func (data *twoArgListenerBinding[V, E]) rawListener() any {
return data.name
}
func valueToTwoArgEventListeners[V View, E any](value any) ([]twoArgListener[V, E], bool) {
if value == nil {
return nil, true
}
switch value := value.(type) {
case []twoArgListener[V, E]:
return value, true
case twoArgListener[V, E]:
return []twoArgListener[V, E]{value}, true
case string:
return []twoArgListener[V, E]{newTwoArgListenerBinding[V, E](value)}, true
case func(V, E):
return []twoArgListener[V, E]{newTwoArgListenerVE(value)}, true
case func(V):
return []twoArgListener[V, E]{newTwoArgListenerV[V, E](value)}, true
case func(E):
return []twoArgListener[V, E]{newTwoArgListenerE[V](value)}, true
case func():
return []twoArgListener[V, E]{newTwoArgListener0[V, E](value)}, true
case func(E, E):
return []twoArgListener[V, E]{newTwoArgListenerEE[V](value)}, true
case func(V, E, E):
return []twoArgListener[V, E]{newTwoArgListenerVEE(value)}, true
case []func(V, E):
result := make([]twoArgListener[V, E], 0, len(value))
for _, fn := range value {
if fn != nil {
result = append(result, newTwoArgListenerVE(fn))
}
}
return result, len(result) > 0
case []func(E):
result := make([]twoArgListener[V, E], 0, len(value))
for _, fn := range value {
if fn != nil {
result = append(result, newTwoArgListenerE[V](fn))
}
}
return result, len(result) > 0
case []func(V):
result := make([]twoArgListener[V, E], 0, len(value))
for _, fn := range value {
if fn != nil {
result = append(result, newTwoArgListenerV[V, E](fn))
}
}
return result, len(result) > 0
case []func():
result := make([]twoArgListener[V, E], 0, len(value))
for _, fn := range value {
if fn != nil {
result = append(result, newTwoArgListener0[V, E](fn))
}
}
return result, len(result) > 0
case []func(E, E):
result := make([]twoArgListener[V, E], 0, len(value))
for _, fn := range value {
if fn != nil {
result = append(result, newTwoArgListenerEE[V](fn))
}
}
return result, len(result) > 0
case []func(V, E, E):
result := make([]twoArgListener[V, E], 0, len(value))
for _, fn := range value {
if fn != nil {
result = append(result, newTwoArgListenerVEE(fn))
}
}
return result, len(result) > 0
case []any:
result := make([]twoArgListener[V, E], 0, len(value))
for _, v := range value {
if v != nil {
switch v := v.(type) {
case func(V, E):
result = append(result, newTwoArgListenerVE(v))
case func(E):
result = append(result, newTwoArgListenerE[V](v))
case func(V):
result = append(result, newTwoArgListenerV[V, E](v))
case func():
result = append(result, newTwoArgListener0[V, E](v))
case func(E, E):
result = append(result, newTwoArgListenerEE[V](v))
case func(V, E, E):
result = append(result, newTwoArgListenerVEE(v))
case string:
result = append(result, newTwoArgListenerBinding[V, E](v))
default:
return nil, false
}
}
}
return result, len(result) > 0
}
return nil, false
}
func setTwoArgEventListener[V View, T any](view View, tag PropertyName, value any) []PropertyName {
if listeners, ok := valueToTwoArgEventListeners[V, T](value); ok {
if len(listeners) > 0 {
view.setRaw(tag, listeners)
} else if view.getRaw(tag) != nil {
view.setRaw(tag, nil)
} else {
return []PropertyName{}
}
return []PropertyName{tag}
}
notCompatibleType(tag, value)
return nil
}
func getTwoArgEventListeners[V View, E any](view View, subviewID []string, tag PropertyName) []twoArgListener[V, E] {
if view = getSubview(view, subviewID); view != nil {
if value := view.Get(tag); value != nil {
if result, ok := value.([]twoArgListener[V, E]); ok {
return result
}
}
}
return []twoArgListener[V, E]{}
}
func getTwoArgEventRawListeners[V View, E any](view View, subviewID []string, tag PropertyName) []any {
listeners := getTwoArgEventListeners[V, E](view, subviewID, tag)
result := make([]any, len(listeners))
for i, l := range listeners {
result[i] = l.rawListener()
}
return result
}

21
numberPicker.go
View File

@ -201,7 +201,7 @@ func (picker *numberPickerData) propertyChanged(tag PropertyName) {
format := picker.numberFormat()
picker.Session().callFunc("setInputValue", picker.htmlID(), fmt.Sprintf(format, value))
if listeners := GetNumberChangedListeners(picker); len(listeners) > 0 {
if listeners := getTwoArgEventListeners[NumberPicker, float64](picker, nil, NumberChangedEvent); len(listeners) > 0 {
old := 0.0
if val := picker.getRaw("old-number"); val != nil {
if n, ok := val.(float64); ok {
@ -210,7 +210,7 @@ func (picker *numberPickerData) propertyChanged(tag PropertyName) {
}
if old != value {
for _, listener := range listeners {
listener(picker, value, old)
listener.Run(picker, value, old)
}
}
}
@ -280,8 +280,8 @@ func (picker *numberPickerData) handleCommand(self View, command PropertyName, d
oldValue := GetNumberPickerValue(picker)
picker.properties[NumberPickerValue] = text
if value != oldValue {
for _, listener := range GetNumberChangedListeners(picker) {
listener(picker, value, oldValue)
for _, listener := range getTwoArgEventListeners[NumberPicker, float64](picker, nil, NumberChangedEvent) {
listener.Run(picker, value, oldValue)
}
if listener, ok := picker.changeListener[NumberPickerValue]; ok {
listener(picker, NumberPickerValue)
@ -359,10 +359,19 @@ func GetNumberPickerValue(view View, subviewID ...string) float64 {
// GetNumberChangedListeners returns the NumberChangedListener list of an NumberPicker subview.
// If there are no listeners then the empty list is returned
//
// Result elements can be of the following types:
// - func(rui.NumberPicker, float64, float64),
// - func(rui.NumberPicker, float64),
// - func(rui.NumberPicker),
// - func(float64, float64),
// - func(float64),
// - func(),
// - string.
//
// The second argument (subviewID) specifies the path to the child element whose value needs to be returned.
// If it is not specified then a value from the first argument (view) is returned.
func GetNumberChangedListeners(view View, subviewID ...string) []func(NumberPicker, float64, float64) {
return getTwoArgEventListeners[NumberPicker, float64](view, subviewID, NumberChangedEvent)
func GetNumberChangedListeners(view View, subviewID ...string) []any {
return getTwoArgEventRawListeners[NumberPicker, float64](view, subviewID, NumberChangedEvent)
}
// GetNumberPickerPrecision returns the precision of displaying fractional part in editor of NumberPicker subview.

19
tableView.go
View File

@ -845,8 +845,17 @@ func (table *tableViewData) propertyChanged(tag PropertyName) {
current := tableViewCurrent(table)
session.callFunc("setTableCellCursorByID", htmlID, current.Row, current.Column)
for _, listener := range getTwoArgEventListeners[TableView, int](table, nil, TableCellSelectedEvent) {
listener.Run(table, current.Row, current.Column)
}
case RowSelection:
session.callFunc("setTableRowCursorByID", htmlID, tableViewCurrent(table).Row)
current := tableViewCurrent(table)
session.callFunc("setTableRowCursorByID", htmlID, current.Row)
for _, listener := range getOneArgEventListeners[TableView, int](table, nil, TableRowSelectedEvent) {
listener.Run(table, current.Row)
}
}
case Gap:
@ -1687,8 +1696,8 @@ func (table *tableViewData) handleCommand(self View, command PropertyName, data
listener(table, Current)
}
for _, listener := range GetTableCellSelectedListeners(table) {
listener(table, row, column)
for _, listener := range getTwoArgEventListeners[TableView, int](table, nil, TableCellSelectedEvent) {
listener.Run(table, row, column)
}
}
}
@ -1704,8 +1713,8 @@ func (table *tableViewData) handleCommand(self View, command PropertyName, data
case "cellClick":
if row, ok := dataIntProperty(data, "row"); ok {
if column, ok := dataIntProperty(data, "column"); ok {
for _, listener := range GetTableCellClickedListeners(table) {
listener(table, row, column)
for _, listener := range getTwoArgEventListeners[TableView, int](table, nil, TableCellClickedEvent) {
listener.Run(table, row, column)
}
}
}

26
tableViewUtils.go
View File

@ -149,19 +149,37 @@ func GetTableCurrent(view View, subviewID ...string) CellIndex {
// GetTableCellClickedListeners returns listeners of event which occurs when the user clicks on a table cell.
// If there are no listeners then the empty list is returned.
//
// Result elements can be of the following types:
// - func(rui.TableView, int, int),
// - func(rui.TableView, int),
// - func(rui.TableView),
// - func(int, int),
// - func(int),
// - func(),
// - string.
//
// The second argument (subviewID) specifies the path to the child element whose value needs to be returned.
// If it is not specified then a value from the first argument (view) is returned.
func GetTableCellClickedListeners(view View, subviewID ...string) []func(TableView, int, int) {
return getTwoArgEventListeners[TableView, int](view, subviewID, TableCellClickedEvent)
func GetTableCellClickedListeners(view View, subviewID ...string) []any {
return getTwoArgEventRawListeners[TableView, int](view, subviewID, TableCellClickedEvent)
}
// GetTableCellSelectedListeners returns listeners of event which occurs when a table cell becomes selected.
// If there are no listeners then the empty list is returned.
//
// Result elements can be of the following types:
// - func(rui.TableView, int, int),
// - func(rui.TableView, int),
// - func(rui.TableView),
// - func(int, int),
// - func(int),
// - func(),
// - string.
//
// The second argument (subviewID) specifies the path to the child element whose value needs to be returned.
// If it is not specified then a value from the first argument (view) is returned.
func GetTableCellSelectedListeners(view View, subviewID ...string) []func(TableView, int, int) {
return getTwoArgEventListeners[TableView, int](view, subviewID, TableCellSelectedEvent)
func GetTableCellSelectedListeners(view View, subviewID ...string) []any {
return getTwoArgEventRawListeners[TableView, int](view, subviewID, TableCellSelectedEvent)
}
// GetTableRowClickedListeners returns listeners of event which occurs when the user clicks on a table row.

21
tabsLayout.go
View File

@ -211,7 +211,7 @@ func (tabsLayout *tabsLayoutData) propertyChanged(tag PropertyName) {
if listeners := getTwoArgEventListeners[TabsLayout, int](tabsLayout, nil, CurrentTabChangedEvent); len(listeners) > 0 {
oldCurrent, _ := intProperty(tabsLayout, "old-current", session, -1)
for _, listener := range listeners {
listener(tabsLayout, current, oldCurrent)
listener.Run(tabsLayout, current, oldCurrent)
}
}
@ -427,7 +427,7 @@ func (tabsLayout *tabsLayoutData) Insert(view View, index int) {
func (tabsLayout *tabsLayoutData) currentChanged(newCurrent, oldCurrent int) {
for _, listener := range getTwoArgEventListeners[TabsLayout, int](tabsLayout, nil, CurrentTabChangedEvent) {
listener(tabsLayout, newCurrent, oldCurrent)
listener.Run(tabsLayout, newCurrent, oldCurrent)
}
if listener, ok := tabsLayout.changeListener[Current]; ok {
listener(tabsLayout, Current)
@ -766,3 +766,20 @@ func (tabsLayout *tabsLayoutData) handleCommand(self View, command PropertyName,
func GetTabCloseEventListeners(view View, subviewID ...string) []any {
return getOneArgEventRawListeners[TabsLayout, int](view, subviewID, TabCloseEvent)
}
// GetCurrentTabChangedEventListeners returns the "current-tab-changed" listener list. If there are no listeners then the empty list is returned.
//
// Result elements can be of the following types:
// - func(rui.TabsLayout, int, int),
// - func(rui.TabsLayout, int),
// - func(rui.TabsLayout),
// - func(int, int),
// - func(int),
// - func(),
// - string.
//
// The second argument (subviewID) specifies the path to the child element whose value needs to be returned.
// If it is not specified then a value from the first argument (view) is returned.
func GetCurrentTabChangedEventListeners(view View, subviewID ...string) []any {
return getTwoArgEventRawListeners[TabsLayout, int](view, subviewID, CurrentTabChangedEvent)
}

21
timePicker.go
View File

@ -246,7 +246,7 @@ func (picker *timePickerData) propertyChanged(tag PropertyName) {
value := GetTimePickerValue(picker)
session.callFunc("setInputValue", picker.htmlID(), value.Format(timeFormat))
if listeners := GetTimeChangedListeners(picker); len(listeners) > 0 {
if listeners := getTwoArgEventListeners[TimePicker, time.Time](picker, nil, TimeChangedEvent); len(listeners) > 0 {
oldTime := time.Now()
if val := picker.getRaw("old-time"); val != nil {
if time, ok := val.(time.Time); ok {
@ -254,7 +254,7 @@ func (picker *timePickerData) propertyChanged(tag PropertyName) {
}
}
for _, listener := range listeners {
listener(picker, value, oldTime)
listener.Run(picker, value, oldTime)
}
}
@ -320,8 +320,8 @@ func (picker *timePickerData) handleCommand(self View, command PropertyName, dat
oldValue := GetTimePickerValue(picker)
picker.properties[TimePickerValue] = value
if value != oldValue {
for _, listener := range GetTimeChangedListeners(picker) {
listener(picker, value, oldValue)
for _, listener := range getTwoArgEventListeners[TimePicker, time.Time](picker, nil, TimeChangedEvent) {
listener.Run(picker, value, oldValue)
}
if listener, ok := picker.changeListener[TimePickerValue]; ok {
listener(picker, TimePickerValue)
@ -418,8 +418,17 @@ func GetTimePickerValue(view View, subviewID ...string) time.Time {
// GetTimeChangedListeners returns the TimeChangedListener list of an TimePicker subview.
// If there are no listeners then the empty list is returned
//
// Result elements can be of the following types:
// - func(rui.TimePicker, time.Time, time.Time),
// - func(rui.TimePicker, time.Time),
// - func(rui.TimePicker),
// - func(time.Time, time.Time),
// - func(time.Time),
// - func(),
// - string.
//
// The second argument (subviewID) specifies the path to the child element whose value needs to be returned.
// If it is not specified then a value from the first argument (view) is returned.
func GetTimeChangedListeners(view View, subviewID ...string) []func(TimePicker, time.Time, time.Time) {
return getTwoArgEventListeners[TimePicker, time.Time](view, subviewID, TimeChangedEvent)
func GetTimeChangedListeners(view View, subviewID ...string) []any {
return getTwoArgEventRawListeners[TimePicker, time.Time](view, subviewID, TimeChangedEvent)
}