mirror of https://github.com/anoshenko/rui.git
329 lines
9.2 KiB
Go
329 lines
9.2 KiB
Go
package rui
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import (
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"math"
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"strconv"
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"strings"
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)
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const (
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NumberChangedEvent = "number-changed"
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NumberPickerType = "number-picker-type"
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NumberPickerMin = "number-picker-min"
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NumberPickerMax = "number-picker-max"
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NumberPickerStep = "number-picker-step"
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NumberPickerValue = "number-picker-value"
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)
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const (
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// NumberEditor - type of NumberPicker. NumberPicker is presented by editor
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NumberEditor = 0
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// NumberSlider - type of NumberPicker. NumberPicker is presented by slider
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NumberSlider = 1
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)
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// NumberPicker - NumberPicker view
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type NumberPicker interface {
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View
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}
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type numberPickerData struct {
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viewData
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numberChangedListeners []func(NumberPicker, float64)
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}
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// NewNumberPicker create new NumberPicker object and return it
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func NewNumberPicker(session Session, params Params) NumberPicker {
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view := new(numberPickerData)
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view.init(session)
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setInitParams(view, params)
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return view
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}
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func newNumberPicker(session Session) View {
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return NewNumberPicker(session, nil)
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}
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func (picker *numberPickerData) init(session Session) {
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picker.viewData.init(session)
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picker.tag = "NumberPicker"
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picker.numberChangedListeners = []func(NumberPicker, float64){}
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}
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func (picker *numberPickerData) String() string {
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return getViewString(picker)
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}
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func (picker *numberPickerData) Focusable() bool {
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return true
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}
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func (picker *numberPickerData) normalizeTag(tag string) string {
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tag = strings.ToLower(tag)
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switch tag {
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case Type, Min, Max, Step, Value:
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return "number-picker-" + tag
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}
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return tag
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}
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func (picker *numberPickerData) Remove(tag string) {
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picker.remove(picker.normalizeTag(tag))
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}
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func (picker *numberPickerData) remove(tag string) {
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switch tag {
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case NumberChangedEvent:
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if len(picker.numberChangedListeners) > 0 {
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picker.numberChangedListeners = []func(NumberPicker, float64){}
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picker.propertyChangedEvent(tag)
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}
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default:
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picker.viewData.remove(tag)
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picker.propertyChanged(tag)
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}
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}
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func (picker *numberPickerData) Set(tag string, value any) bool {
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return picker.set(picker.normalizeTag(tag), value)
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}
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func (picker *numberPickerData) set(tag string, value any) bool {
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if value == nil {
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picker.remove(tag)
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return true
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}
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switch tag {
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case NumberChangedEvent:
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listeners, ok := valueToEventListeners[NumberPicker, float64](value)
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if !ok {
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notCompatibleType(tag, value)
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return false
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} else if listeners == nil {
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listeners = []func(NumberPicker, float64){}
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}
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picker.numberChangedListeners = listeners
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picker.propertyChangedEvent(tag)
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return true
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case NumberPickerValue:
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oldValue := GetNumberPickerValue(picker)
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min, max := GetNumberPickerMinMax(picker)
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if picker.setFloatProperty(NumberPickerValue, value, min, max) {
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if f, ok := floatProperty(picker, NumberPickerValue, picker.Session(), min); ok && f != oldValue {
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newValue, _ := floatTextProperty(picker, NumberPickerValue, picker.Session(), min)
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if picker.created {
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picker.session.runFunc("setInputValue", picker.htmlID(), newValue)
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}
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for _, listener := range picker.numberChangedListeners {
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listener(picker, f)
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}
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picker.propertyChangedEvent(tag)
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}
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return true
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}
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default:
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if picker.viewData.set(tag, value) {
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picker.propertyChanged(tag)
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return true
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}
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}
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return false
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}
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func (picker *numberPickerData) propertyChanged(tag string) {
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if picker.created {
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switch tag {
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case NumberPickerType:
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if GetNumberPickerType(picker) == NumberSlider {
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picker.session.updateProperty(picker.htmlID(), "type", "range")
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} else {
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picker.session.updateProperty(picker.htmlID(), "type", "number")
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}
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case NumberPickerMin:
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min, _ := GetNumberPickerMinMax(picker)
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picker.session.updateProperty(picker.htmlID(), Min, strconv.FormatFloat(min, 'f', -1, 32))
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case NumberPickerMax:
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_, max := GetNumberPickerMinMax(picker)
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picker.session.updateProperty(picker.htmlID(), Max, strconv.FormatFloat(max, 'f', -1, 32))
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case NumberPickerStep:
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if step := GetNumberPickerStep(picker); step > 0 {
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picker.session.updateProperty(picker.htmlID(), Step, strconv.FormatFloat(step, 'f', -1, 32))
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} else {
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picker.session.updateProperty(picker.htmlID(), Step, "any")
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}
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case NumberPickerValue:
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value := GetNumberPickerValue(picker)
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picker.session.runFunc("setInputValue", picker.htmlID(), value)
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for _, listener := range picker.numberChangedListeners {
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listener(picker, value)
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}
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}
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}
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}
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func (picker *numberPickerData) Get(tag string) any {
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return picker.get(picker.normalizeTag(tag))
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}
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func (picker *numberPickerData) get(tag string) any {
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switch tag {
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case NumberChangedEvent:
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return picker.numberChangedListeners
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default:
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return picker.viewData.get(tag)
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}
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}
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func (picker *numberPickerData) htmlTag() string {
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return "input"
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}
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func (picker *numberPickerData) htmlProperties(self View, buffer *strings.Builder) {
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picker.viewData.htmlProperties(self, buffer)
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if GetNumberPickerType(picker) == NumberSlider {
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buffer.WriteString(` type="range"`)
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} else {
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buffer.WriteString(` type="number"`)
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}
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min, max := GetNumberPickerMinMax(picker)
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if min != math.Inf(-1) {
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buffer.WriteString(` min="`)
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buffer.WriteString(strconv.FormatFloat(min, 'f', -1, 64))
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buffer.WriteByte('"')
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}
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if max != math.Inf(1) {
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buffer.WriteString(` max="`)
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buffer.WriteString(strconv.FormatFloat(max, 'f', -1, 64))
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buffer.WriteByte('"')
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}
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step := GetNumberPickerStep(picker)
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if step != 0 {
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buffer.WriteString(` step="`)
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buffer.WriteString(strconv.FormatFloat(step, 'f', -1, 64))
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buffer.WriteByte('"')
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} else {
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buffer.WriteString(` step="any"`)
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}
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buffer.WriteString(` value="`)
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buffer.WriteString(strconv.FormatFloat(GetNumberPickerValue(picker), 'f', -1, 64))
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buffer.WriteByte('"')
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buffer.WriteString(` oninput="editViewInputEvent(this)"`)
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}
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func (picker *numberPickerData) htmlDisabledProperties(self View, buffer *strings.Builder) {
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if IsDisabled(self) {
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buffer.WriteString(` disabled`)
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}
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picker.viewData.htmlDisabledProperties(self, buffer)
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}
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func (picker *numberPickerData) handleCommand(self View, command string, data DataObject) bool {
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switch command {
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case "textChanged":
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if text, ok := data.PropertyValue("text"); ok {
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if value, err := strconv.ParseFloat(text, 32); err == nil {
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oldValue := GetNumberPickerValue(picker)
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picker.properties[NumberPickerValue] = text
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if value != oldValue {
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for _, listener := range picker.numberChangedListeners {
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listener(picker, value)
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}
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}
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}
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}
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return true
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}
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return picker.viewData.handleCommand(self, command, data)
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}
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// GetNumberPickerType returns the type of NumberPicker subview. Valid values:
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// NumberEditor (0) - NumberPicker is presented by editor (default type);
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// NumberSlider (1) - NumberPicker is presented by slider.
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// If the second argument (subviewID) is not specified or it is "" then a value from the first argument (view) is returned.
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func GetNumberPickerType(view View, subviewID ...string) int {
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return enumStyledProperty(view, subviewID, NumberPickerType, NumberEditor, false)
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}
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// GetNumberPickerMinMax returns the min and max value of NumberPicker subview.
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// If the second argument (subviewID) is not specified or it is "" then a value from the first argument (view) is returned.
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func GetNumberPickerMinMax(view View, subviewID ...string) (float64, float64) {
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var pickerType int
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if len(subviewID) > 0 && subviewID[0] != "" {
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pickerType = GetNumberPickerType(view, subviewID[0])
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} else {
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pickerType = GetNumberPickerType(view)
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}
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var defMin, defMax float64
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if pickerType == NumberSlider {
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defMin = 0
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defMax = 1
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} else {
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defMin = math.Inf(-1)
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defMax = math.Inf(1)
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}
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min := floatStyledProperty(view, subviewID, NumberPickerMin, defMin)
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max := floatStyledProperty(view, subviewID, NumberPickerMax, defMax)
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if min > max {
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return max, min
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}
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return min, max
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}
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// GetNumberPickerStep returns the value changing step of NumberPicker subview.
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// If the second argument (subviewID) is not specified or it is "" then a value from the first argument (view) is returned.
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func GetNumberPickerStep(view View, subviewID ...string) float64 {
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var max float64
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if len(subviewID) > 0 && subviewID[0] != "" {
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_, max = GetNumberPickerMinMax(view, subviewID[0])
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} else {
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_, max = GetNumberPickerMinMax(view)
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}
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result := floatStyledProperty(view, subviewID, NumberPickerStep, 0)
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if result > max {
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return max
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}
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return result
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}
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// GetNumberPickerValue returns the value of NumberPicker subview.
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// If the second argument (subviewID) is not specified or it is "" then a value from the first argument (view) is returned.
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func GetNumberPickerValue(view View, subviewID ...string) float64 {
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var min float64
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if len(subviewID) > 0 && subviewID[0] != "" {
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min, _ = GetNumberPickerMinMax(view, subviewID[0])
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} else {
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min, _ = GetNumberPickerMinMax(view)
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}
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result := floatStyledProperty(view, subviewID, NumberPickerValue, min)
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return result
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}
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// GetNumberChangedListeners returns the NumberChangedListener list of an NumberPicker subview.
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// If there are no listeners then the empty list is returned
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// If the second argument (subviewID) is not specified or it is "" then a value from the first argument (view) is returned.
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func GetNumberChangedListeners(view View, subviewID ...string) []func(NumberPicker, float64) {
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return getEventListeners[NumberPicker, float64](view, subviewID, NumberChangedEvent)
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}
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