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rui/timePicker.go

439 lines
11 KiB
Go

package rui
import (
"fmt"
"strconv"
"strings"
"time"
)
const (
TimeChangedEvent = "time-changed"
TimePickerMin = "time-picker-min"
TimePickerMax = "time-picker-max"
TimePickerStep = "time-picker-step"
TimePickerValue = "time-picker-value"
timeFormat = "15:04"
)
// TimePicker - TimePicker view
type TimePicker interface {
View
}
type timePickerData struct {
viewData
timeChangedListeners []func(TimePicker, time.Time)
}
// NewTimePicker create new TimePicker object and return it
func NewTimePicker(session Session, params Params) TimePicker {
view := new(timePickerData)
view.Init(session)
setInitParams(view, params)
return view
}
func newTimePicker(session Session) View {
return NewTimePicker(session, nil)
}
func (picker *timePickerData) Init(session Session) {
picker.viewData.Init(session)
picker.tag = "TimePicker"
picker.timeChangedListeners = []func(TimePicker, time.Time){}
}
func (picker *timePickerData) normalizeTag(tag string) string {
tag = strings.ToLower(tag)
switch tag {
case Type, Min, Max, Step, Value:
return "time-picker-" + tag
}
return tag
}
func (picker *timePickerData) Remove(tag string) {
picker.remove(picker.normalizeTag(tag))
}
func (picker *timePickerData) remove(tag string) {
switch tag {
case TimeChangedEvent:
if len(picker.timeChangedListeners) > 0 {
picker.timeChangedListeners = []func(TimePicker, time.Time){}
picker.propertyChangedEvent(tag)
}
return
case TimePickerMin:
delete(picker.properties, TimePickerMin)
if picker.created {
removeProperty(picker.htmlID(), Min, picker.session)
}
case TimePickerMax:
delete(picker.properties, TimePickerMax)
if picker.created {
removeProperty(picker.htmlID(), Max, picker.session)
}
case TimePickerStep:
delete(picker.properties, TimePickerMax)
if picker.created {
removeProperty(picker.htmlID(), Step, picker.session)
}
case TimePickerValue:
if _, ok := picker.properties[TimePickerValue]; ok {
delete(picker.properties, TimePickerValue)
time := GetTimePickerValue(picker, "")
if picker.created {
picker.session.runScript(fmt.Sprintf(`setInputValue('%s', '%s')`, picker.htmlID(), time.Format(timeFormat)))
}
for _, listener := range picker.timeChangedListeners {
listener(picker, time)
}
} else {
return
}
default:
picker.viewData.remove(tag)
return
}
picker.propertyChangedEvent(tag)
}
func (picker *timePickerData) Set(tag string, value interface{}) bool {
return picker.set(picker.normalizeTag(tag), value)
}
func (picker *timePickerData) set(tag string, value interface{}) bool {
if value == nil {
picker.remove(tag)
return true
}
setTimeValue := func(tag string) (time.Time, bool) {
switch value := value.(type) {
case time.Time:
picker.properties[tag] = value
return value, true
case string:
if text, ok := picker.Session().resolveConstants(value); ok {
if time, err := time.Parse(timeFormat, text); err == nil {
picker.properties[tag] = value
return time, true
}
}
}
notCompatibleType(tag, value)
return time.Now(), false
}
switch tag {
case TimePickerMin:
old, oldOK := getTimeProperty(picker, TimePickerMin, Min)
if time, ok := setTimeValue(TimePickerMin); ok {
if !oldOK || time != old {
if picker.created {
updateProperty(picker.htmlID(), Min, time.Format(timeFormat), picker.session)
}
picker.propertyChangedEvent(tag)
}
return true
}
case TimePickerMax:
old, oldOK := getTimeProperty(picker, TimePickerMax, Max)
if time, ok := setTimeValue(TimePickerMax); ok {
if !oldOK || time != old {
if picker.created {
updateProperty(picker.htmlID(), Max, time.Format(timeFormat), picker.session)
}
picker.propertyChangedEvent(tag)
}
return true
}
case TimePickerStep:
oldStep := GetTimePickerStep(picker, "")
if picker.setIntProperty(TimePickerStep, value) {
if step := GetTimePickerStep(picker, ""); oldStep != step {
if picker.created {
if step > 0 {
updateProperty(picker.htmlID(), Step, strconv.Itoa(step), picker.session)
} else {
removeProperty(picker.htmlID(), Step, picker.session)
}
}
picker.propertyChangedEvent(tag)
}
return true
}
case TimePickerValue:
oldTime := GetTimePickerValue(picker, "")
if time, ok := setTimeValue(TimePickerMax); ok {
if time != oldTime {
if picker.created {
picker.session.runScript(fmt.Sprintf(`setInputValue('%s', '%s')`, picker.htmlID(), time.Format(timeFormat)))
}
for _, listener := range picker.timeChangedListeners {
listener(picker, time)
}
picker.propertyChangedEvent(tag)
}
return true
}
case TimeChangedEvent:
switch value := value.(type) {
case func(TimePicker, time.Time):
picker.timeChangedListeners = []func(TimePicker, time.Time){value}
case func(time.Time):
fn := func(view TimePicker, time time.Time) {
value(time)
}
picker.timeChangedListeners = []func(TimePicker, time.Time){fn}
case []func(TimePicker, time.Time):
picker.timeChangedListeners = value
case []func(time.Time):
listeners := make([]func(TimePicker, time.Time), len(value))
for i, val := range value {
if val == nil {
notCompatibleType(tag, val)
return false
}
listeners[i] = func(view TimePicker, time time.Time) {
val(time)
}
}
picker.timeChangedListeners = listeners
case []interface{}:
listeners := make([]func(TimePicker, time.Time), len(value))
for i, val := range value {
if val == nil {
notCompatibleType(tag, val)
return false
}
switch val := val.(type) {
case func(TimePicker, time.Time):
listeners[i] = val
case func(time.Time):
listeners[i] = func(view TimePicker, time time.Time) {
val(time)
}
default:
notCompatibleType(tag, val)
return false
}
}
picker.timeChangedListeners = listeners
}
picker.propertyChangedEvent(tag)
return true
default:
return picker.viewData.set(tag, value)
}
return false
}
func (picker *timePickerData) Get(tag string) interface{} {
return picker.get(picker.normalizeTag(tag))
}
func (picker *timePickerData) get(tag string) interface{} {
switch tag {
case TimeChangedEvent:
return picker.timeChangedListeners
default:
return picker.viewData.get(tag)
}
}
func (picker *timePickerData) htmlTag() string {
return "input"
}
func (picker *timePickerData) htmlProperties(self View, buffer *strings.Builder) {
picker.viewData.htmlProperties(self, buffer)
buffer.WriteString(` type="time"`)
if min, ok := getTimeProperty(picker, TimePickerMin, Min); ok {
buffer.WriteString(` min="`)
buffer.WriteString(min.Format(timeFormat))
buffer.WriteByte('"')
}
if max, ok := getTimeProperty(picker, TimePickerMax, Max); ok {
buffer.WriteString(` max="`)
buffer.WriteString(max.Format(timeFormat))
buffer.WriteByte('"')
}
if step, ok := intProperty(picker, TimePickerStep, picker.Session(), 0); ok && step > 0 {
buffer.WriteString(` step="`)
buffer.WriteString(strconv.Itoa(step))
buffer.WriteByte('"')
}
buffer.WriteString(` value="`)
buffer.WriteString(GetTimePickerValue(picker, "").Format(timeFormat))
buffer.WriteByte('"')
buffer.WriteString(` oninput="editViewInputEvent(this)"`)
}
func (picker *timePickerData) htmlDisabledProperties(self View, buffer *strings.Builder) {
if IsDisabled(self, "") {
buffer.WriteString(` disabled`)
}
picker.viewData.htmlDisabledProperties(self, buffer)
}
func (picker *timePickerData) handleCommand(self View, command string, data DataObject) bool {
switch command {
case "textChanged":
if text, ok := data.PropertyValue("text"); ok {
if value, err := time.Parse(timeFormat, text); err == nil {
oldValue := GetTimePickerValue(picker, "")
picker.properties[TimePickerValue] = value
if value != oldValue {
for _, listener := range picker.timeChangedListeners {
listener(picker, value)
}
}
}
}
return true
}
return picker.viewData.handleCommand(self, command, data)
}
func getTimeProperty(view View, mainTag, shortTag string) (time.Time, bool) {
valueToTime := func(value interface{}) (time.Time, bool) {
if value != nil {
switch value := value.(type) {
case time.Time:
return value, true
case string:
if text, ok := view.Session().resolveConstants(value); ok {
if result, err := time.Parse(timeFormat, text); err == nil {
return result, true
}
}
}
}
return time.Now(), false
}
if view != nil {
if result, ok := valueToTime(view.getRaw(mainTag)); ok {
return result, true
}
if value, ok := valueFromStyle(view, shortTag); ok {
if result, ok := valueToTime(value); ok {
return result, true
}
}
}
return time.Now(), false
}
// GetTimePickerMin returns the min time of TimePicker subview and "true" as the second value if the min time is set,
// "false" as the second value otherwise.
// If the second argument (subviewID) is "" then a value from the first argument (view) is returned.
func GetTimePickerMin(view View, subviewID string) (time.Time, bool) {
if subviewID != "" {
view = ViewByID(view, subviewID)
}
if view != nil {
return getTimeProperty(view, TimePickerMin, Min)
}
return time.Now(), false
}
// GetTimePickerMax returns the max time of TimePicker subview and "true" as the second value if the min time is set,
// "false" as the second value otherwise.
// If the second argument (subviewID) is "" then a value from the first argument (view) is returned.
func GetTimePickerMax(view View, subviewID string) (time.Time, bool) {
if subviewID != "" {
view = ViewByID(view, subviewID)
}
if view != nil {
return getTimeProperty(view, TimePickerMax, Max)
}
return time.Now(), false
}
// GetTimePickerStep returns the time changing step in seconds of TimePicker subview.
// If the second argument (subviewID) is "" then a value from the first argument (view) is returned.
func GetTimePickerStep(view View, subviewID string) int {
if subviewID != "" {
view = ViewByID(view, subviewID)
}
if view == nil {
return 60
}
result, ok := intStyledProperty(view, TimePickerStep, 60)
if !ok {
result, _ = intStyledProperty(view, Step, 60)
}
if result < 0 {
return 60
}
return result
}
// GetTimePickerValue returns the time of TimePicker subview.
// If the second argument (subviewID) is "" then a value from the first argument (view) is returned.
func GetTimePickerValue(view View, subviewID string) time.Time {
if subviewID != "" {
view = ViewByID(view, subviewID)
}
if view == nil {
return time.Now()
}
time, _ := getTimeProperty(view, TimePickerValue, Value)
return time
}
// GetTimeChangedListeners returns the TimeChangedListener list of an TimePicker subview.
// If there are no listeners then the empty list is returned
// If the second argument (subviewID) is "" then a value from the first argument (view) is returned.
func GetTimeChangedListeners(view View, subviewID string) []func(TimePicker, time.Time) {
if subviewID != "" {
view = ViewByID(view, subviewID)
}
if view != nil {
if value := view.Get(TimeChangedEvent); value != nil {
if listeners, ok := value.([]func(TimePicker, time.Time)); ok {
return listeners
}
}
}
return []func(TimePicker, time.Time){}
}