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rui/popup.go

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package rui
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import (
"strings"
)
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const (
// Title is the constant for the "title" property tag.
// The "title" property is defined the Popup/Tabs title
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Title = "title"
// TitleStyle is the constant for the "title-style" property tag.
// The "title-style" string property is used to set the title style of the Popup.
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TitleStyle = "title-style"
// CloseButton is the constant for the "close-button" property tag.
// The "close-button" bool property allow to add the close button to the Popup.
// Setting this property to "true" adds a window close button to the title bar (the default value is "false").
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CloseButton = "close-button"
// OutsideClose is the constant for the "outside-close" property tag.
// The "outside-close" is a bool property. If it is set to "true",
// then clicking outside the popup window automatically calls the Dismiss() method.
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OutsideClose = "outside-close"
// Buttons is the constant for the "buttons" property tag.
// Using the "buttons" property you can add buttons that will be placed at the bottom of the Popup.
// The "buttons" property can be assigned the following data types: PopupButton and []PopupButton
Buttons = "buttons"
// ButtonsAlign is the constant for the "buttons-align" property tag.
// The "buttons-align" int property is used for set the horizontal alignment of Popup buttons.
// Valid values: LeftAlign (0), RightAlign (1), CenterAlign (2), and StretchAlign (3)
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ButtonsAlign = "buttons-align"
// DismissEvent is the constant for the "dismiss-event" property tag.
// The "dismiss-event" event is used to track the closing of the Popup.
// It occurs after the Popup disappears from the screen.
// The main listener for this event has the following format: func(Popup)
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DismissEvent = "dismiss-event"
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// Arrow is the constant for the "arrow" property tag.
// Using the "popup-arrow" int property you can add ...
Arrow = "arrow"
// ArrowAlign is the constant for the "arrow-align" property tag.
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// The "arrow-align" int property is used for set the horizontal alignment of the Popup arrow.
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// Valid values: LeftAlign (0), RightAlign (1), TopAlign (0), BottomAlign (1), CenterAlign (2)
ArrowAlign = "arrow-align"
// ArrowSize is the constant for the "arrow-size" property tag.
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// The "arrow-size" SizeUnit property is used for set the size (length) of the Popup arrow.
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ArrowSize = "arrow-size"
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// ArrowWidth is the constant for the "arrow-width" property tag.
// The "arrow-width" SizeUnit property is used for set the width of the Popup arrow.
ArrowWidth = "arrow-width"
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// ArrowOffset is the constant for the "arrow-offset" property tag.
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// The "arrow-offset" SizeUnit property is used for set the offset of the Popup arrow.
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ArrowOffset = "arrow-offset"
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// NoneArrow is value of the popup "arrow" property: no arrow
NoneArrow = 0
// TopArrow is value of the popup "arrow" property:
// Arrow at the top side of the pop-up window
TopArrow = 1
// RightArrow is value of the popup "arrow" property:
// Arrow on the right side of the pop-up window
RightArrow = 2
// BottomArrow is value of the popup "arrow" property:
// Arrow at the bottom of the pop-up window
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BottomArrow = 3
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// LeftArrow is value of the popup "arrow" property:
// Arrow on the left side of the pop-up window
LeftArrow = 4
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)
// PopupButton describes a button that will be placed at the bottom of the window.
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type PopupButton struct {
Title string
OnClick func(Popup)
}
// Popup interface
type Popup interface {
View() View
Session() Session
Show()
Dismiss()
onDismiss()
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html(buffer *strings.Builder)
viewByHTMLID(id string) View
}
type popupData struct {
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layerView View
view View
dismissListener []func(Popup)
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}
type popupManager struct {
popups []Popup
}
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type popupArrow struct {
column, row int
location, align int
size, width, off SizeUnit
}
func (arrow *popupArrow) fixOff(popupView View) {
if arrow.align == CenterAlign && arrow.off.Type == Auto {
r := GetRadius(popupView)
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switch arrow.location {
case TopArrow:
switch arrow.align {
case LeftAlign:
arrow.off = r.TopLeftX
case RightAlign:
arrow.off = r.TopRightX
}
case BottomArrow:
switch arrow.align {
case LeftAlign:
arrow.off = r.BottomLeftX
case RightAlign:
arrow.off = r.BottomRightX
}
case RightArrow:
switch arrow.align {
case TopAlign:
arrow.off = r.TopRightY
case BottomAlign:
arrow.off = r.BottomRightY
}
case LeftArrow:
switch arrow.align {
case TopAlign:
arrow.off = r.TopLeftY
case BottomAlign:
arrow.off = r.BottomLeftY
}
}
}
}
func (arrow *popupArrow) createView(popupView View) View {
session := popupView.Session()
defaultSize := func(constTag string, defValue SizeUnit) SizeUnit {
if value, ok := session.Constant(constTag); ok {
if size, ok := StringToSizeUnit(value); ok && size.Type != Auto && size.Value != 0 {
return size
}
}
return defValue
}
if arrow.size.Type == Auto || arrow.size.Value == 0 {
arrow.size = defaultSize("ruiArrowSize", Px(16))
}
if arrow.width.Type == Auto || arrow.width.Value == 0 {
arrow.width = defaultSize("ruiArrowWidth", Px(16))
}
params := Params{BackgroundColor: GetBackgroundColor(popupView)}
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if shadow := GetViewShadows(popupView); shadow != nil {
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params[Shadow] = shadow
}
if filter := GetBackdropFilter(popupView); filter != nil {
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params[BackdropFilter] = filter
}
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switch arrow.location {
case TopArrow:
params[Row] = 0
params[Column] = 1
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params[Clip] = PolygonClip([]any{"0%", "100%", "50%", "0%", "100%", "100%"})
params[Width] = arrow.width
params[Height] = arrow.size
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case RightArrow:
params[Row] = 1
params[Column] = 0
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params[Clip] = PolygonClip([]any{"0%", "0%", "100%", "50%", "0%", "100%"})
params[Width] = arrow.size
params[Height] = arrow.width
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case BottomArrow:
params[Row] = 0
params[Column] = 1
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params[Clip] = PolygonClip([]any{"0%", "0%", "50%", "100%", "100%", "0%"})
params[Width] = arrow.width
params[Height] = arrow.size
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case LeftArrow:
params[Row] = 1
params[Column] = 0
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params[Clip] = PolygonClip([]any{"100%", "0%", "0%", "50%", "100%", "100%"})
params[Width] = arrow.size
params[Height] = arrow.width
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}
arrowView := NewView(session, params)
params = Params{
Row: arrow.row,
Column: arrow.column,
Content: arrowView,
}
arrow.fixOff(popupView)
switch arrow.location {
case TopArrow, BottomArrow:
cellWidth := make([]SizeUnit, 3)
switch arrow.align {
case LeftAlign:
cellWidth[0] = arrow.off
cellWidth[2] = Fr(1)
case RightAlign:
cellWidth[0] = Fr(1)
cellWidth[2] = arrow.off
default:
cellWidth[0] = Fr(1)
cellWidth[2] = Fr(1)
if arrow.off.Type != Auto && arrow.off.Value != 0 {
arrowView.Set(MarginLeft, arrow.off)
}
}
params[CellWidth] = cellWidth
case RightArrow, LeftArrow:
cellHeight := make([]SizeUnit, 3)
switch arrow.align {
case TopAlign:
cellHeight[0] = arrow.off
cellHeight[2] = Fr(1)
case BottomAlign:
cellHeight[0] = Fr(1)
cellHeight[2] = arrow.off
default:
cellHeight[0] = Fr(1)
cellHeight[2] = Fr(1)
if arrow.off.Type != Auto && arrow.off.Value != 0 {
arrowView.Set(MarginTop, arrow.off)
}
}
params[CellHeight] = cellHeight
}
return NewGridLayout(session, params)
}
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func (popup *popupData) init(view View, popupParams Params) {
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popup.view = view
session := view.Session()
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columnCount := 3
rowCount := 3
popupRow := 1
popupColumn := 1
arrow := popupArrow{
row: 1,
column: 1,
align: CenterAlign,
}
switch arrow.location, _ = enumProperty(popupParams, Arrow, session, NoneArrow); arrow.location {
case TopArrow:
rowCount = 4
popupRow = 2
case BottomArrow:
rowCount = 4
arrow.row = 2
case LeftArrow:
columnCount = 4
popupColumn = 2
case RightArrow:
columnCount = 4
arrow.column = 2
default:
}
cellWidth := make([]SizeUnit, columnCount)
switch hAlign, _ := enumProperty(popupParams, HorizontalAlign, session, CenterAlign); hAlign {
case LeftAlign:
cellWidth[columnCount-1] = Fr(1)
case RightAlign:
cellWidth[0] = Fr(1)
default:
cellWidth[0] = Fr(1)
cellWidth[columnCount-1] = Fr(1)
}
cellHeight := make([]SizeUnit, rowCount)
switch vAlign, _ := enumProperty(popupParams, VerticalAlign, session, CenterAlign); vAlign {
case LeftAlign:
cellHeight[rowCount-1] = Fr(1)
case RightAlign:
cellHeight[0] = Fr(1)
default:
cellHeight[0] = Fr(1)
cellHeight[rowCount-1] = Fr(1)
}
layerParams := Params{
Style: "ruiPopupLayer",
MaxWidth: Percent(100),
MaxHeight: Percent(100),
CellWidth: cellWidth,
CellHeight: cellHeight,
}
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params := Params{
Style: "ruiPopup",
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Row: popupRow,
Column: popupColumn,
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MaxWidth: Percent(100),
MaxHeight: Percent(100),
CellVerticalAlign: StretchAlign,
CellHorizontalAlign: StretchAlign,
ClickEvent: func(View) {},
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Shadow: NewShadowWithParams(Params{
SpreadRadius: Px(4),
Blur: Px(16),
ColorTag: "@ruiPopupShadow",
}),
}
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var closeButton View = nil
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outsideClose := false
buttons := []PopupButton{}
titleStyle := "ruiPopupTitle"
var title View = nil
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for tag, value := range popupParams {
if value != nil {
switch tag {
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case VerticalAlign, HorizontalAlign, Arrow, Row, Column:
// Do nothing
case Margin:
layerParams[Padding] = value
case MarginLeft:
layerParams[PaddingLeft] = value
case MarginRight:
layerParams[PaddingRight] = value
case MarginTop:
layerParams[PaddingTop] = value
case MarginBottom:
layerParams[PaddingBottom] = value
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case CloseButton:
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closeButton = NewGridLayout(session, Params{
Column: 1,
Height: "@ruiPopupTitleHeight",
Width: "@ruiPopupTitleHeight",
CellHorizontalAlign: CenterAlign,
CellVerticalAlign: CenterAlign,
TextSize: Px(20),
Content: "✕",
NotTranslate: true,
ClickEvent: func(View) {
popup.Dismiss()
},
})
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case OutsideClose:
outsideClose, _ = boolProperty(popupParams, OutsideClose, session)
case Buttons:
switch value := value.(type) {
case PopupButton:
buttons = []PopupButton{value}
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case []PopupButton:
buttons = value
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}
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case Title:
switch value := value.(type) {
case string:
title = NewTextView(view.Session(), Params{Text: value})
case View:
title = value
default:
notCompatibleType(Title, value)
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}
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case TitleStyle:
switch value := value.(type) {
case string:
titleStyle = value
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default:
notCompatibleType(TitleStyle, value)
}
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case DismissEvent:
if listeners, ok := valueToNoParamListeners[Popup](value); ok {
if listeners != nil {
popup.dismissListener = listeners
}
} else {
notCompatibleType(tag, value)
}
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case ArrowAlign:
switch text := value.(type) {
case string:
switch text {
case "top":
value = "left"
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case "bottom":
value = "right"
}
}
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arrow.align, _ = enumProperty(popupParams, ArrowAlign, session, CenterAlign)
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case ArrowSize:
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arrow.size, _ = sizeProperty(popupParams, ArrowSize, session)
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case ArrowOffset:
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arrow.off, _ = sizeProperty(popupParams, ArrowOffset, session)
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default:
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params[tag] = value
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}
}
}
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popupView := NewGridLayout(view.Session(), params)
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var popupCellHeight []SizeUnit
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viewRow := 0
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if title != nil || closeButton != nil {
titleContent := []View{}
if title != nil {
titleContent = append(titleContent, title)
}
if closeButton != nil {
titleContent = append(titleContent, closeButton)
}
popupView.Append(NewGridLayout(session, Params{
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Row: 0,
Style: titleStyle,
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CellWidth: []any{Fr(1), AutoSize()},
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CellVerticalAlign: CenterAlign,
PaddingLeft: Px(12),
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Content: titleContent,
}))
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viewRow = 1
popupCellHeight = []SizeUnit{AutoSize(), Fr(1)}
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} else {
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popupCellHeight = []SizeUnit{Fr(1)}
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}
view.Set(Row, viewRow)
popupView.Append(view)
if buttonCount := len(buttons); buttonCount > 0 {
buttonsAlign, _ := enumProperty(params, ButtonsAlign, session, RightAlign)
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popupCellHeight = append(popupCellHeight, AutoSize())
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gap, _ := sizeConstant(session, "ruiPopupButtonGap")
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cellWidth := []SizeUnit{}
for i := 0; i < buttonCount; i++ {
cellWidth = append(cellWidth, Fr(1))
}
buttonsPanel := NewGridLayout(session, Params{
CellWidth: cellWidth,
})
if gap.Type != Auto && gap.Value > 0 {
buttonsPanel.Set(Gap, gap)
buttonsPanel.Set(Margin, gap)
}
createButton := func(n int, button PopupButton) Button {
return NewButton(session, Params{
Column: n,
Content: button.Title,
ClickEvent: func() {
if button.OnClick != nil {
button.OnClick(popup)
} else {
popup.Dismiss()
}
},
})
}
for i, button := range buttons {
buttonsPanel.Append(createButton(i, button))
}
popupView.Append(NewGridLayout(session, Params{
Row: viewRow + 1,
CellHorizontalAlign: buttonsAlign,
Content: buttonsPanel,
}))
}
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popupView.Set(CellHeight, popupCellHeight)
if arrow.location != NoneArrow {
layerParams[Content] = []View{popupView, arrow.createView(popupView)}
} else {
layerParams[Content] = []View{popupView}
}
popup.layerView = NewGridLayout(session, layerParams)
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if outsideClose {
popup.layerView.Set(ClickEvent, func(View) {
popup.Dismiss()
})
}
}
func (popup popupData) View() View {
return popup.view
}
func (popup *popupData) Session() Session {
return popup.view.Session()
}
func (popup *popupData) Dismiss() {
popup.Session().popupManager().dismissPopup(popup)
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for _, listener := range popup.dismissListener {
listener(popup)
}
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// TODO
}
func (popup *popupData) Show() {
popup.Session().popupManager().showPopup(popup)
}
func (popup *popupData) html(buffer *strings.Builder) {
viewHTML(popup.layerView, buffer)
}
func (popup *popupData) viewByHTMLID(id string) View {
return viewByHTMLID(id, popup.layerView)
}
func (popup *popupData) onDismiss() {
for _, listener := range popup.dismissListener {
listener(popup)
}
}
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// NewPopup creates a new Popup
func NewPopup(view View, param Params) Popup {
if view == nil {
return nil
}
popup := new(popupData)
popup.init(view, param)
return popup
}
// ShowPopup creates a new Popup and shows it
func ShowPopup(view View, param Params) Popup {
popup := NewPopup(view, param)
if popup != nil {
popup.Show()
}
return popup
}
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func (manager *popupManager) updatePopupLayerInnerHTML(session Session) {
if manager.popups == nil {
manager.popups = []Popup{}
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session.updateInnerHTML("ruiPopupLayer", "")
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return
}
buffer := allocStringBuilder()
defer freeStringBuilder(buffer)
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for _, popup := range manager.popups {
popup.html(buffer)
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}
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session.updateInnerHTML("ruiPopupLayer", buffer.String())
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}
func (manager *popupManager) showPopup(popup Popup) {
if popup == nil {
return
}
session := popup.Session()
if manager.popups == nil || len(manager.popups) == 0 {
manager.popups = []Popup{popup}
} else {
manager.popups = append(manager.popups, popup)
}
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session.callFunc("blurCurrent")
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manager.updatePopupLayerInnerHTML(session)
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session.updateCSSProperty("ruiPopupLayer", "visibility", "visible")
session.updateCSSProperty("ruiRoot", "pointer-events", "none")
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}
func (manager *popupManager) dismissPopup(popup Popup) {
if manager.popups == nil {
manager.popups = []Popup{}
return
}
count := len(manager.popups)
if count <= 0 || popup == nil {
return
}
session := popup.Session()
if manager.popups[count-1] == popup {
if count == 1 {
manager.popups = []Popup{}
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session.updateCSSProperty("ruiRoot", "pointer-events", "auto")
session.updateCSSProperty("ruiPopupLayer", "visibility", "hidden")
session.updateInnerHTML("ruiPopupLayer", "")
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} else {
manager.popups = manager.popups[:count-1]
manager.updatePopupLayerInnerHTML(session)
}
popup.onDismiss()
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return
}
for n, p := range manager.popups {
if p == popup {
if n == 0 {
manager.popups = manager.popups[1:]
} else {
manager.popups = append(manager.popups[:n], manager.popups[n+1:]...)
}
manager.updatePopupLayerInnerHTML(session)
popup.onDismiss()
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return
}
}
}