rui/border.go

package rui

import (
	"fmt"
	"strings"
)

const (
	// NoneLine constant specifies that there is no border
	NoneLine = 0
	// SolidLine constant specifies the border/line as a solid line
	SolidLine = 1
	// DashedLine constant specifies the border/line as a dashed line
	DashedLine = 2
	// DottedLine constant specifies the border/line as a dotted line
	DottedLine = 3
	// DoubleLine constant specifies the border/line as a double solid line
	DoubleLine = 4
	// DoubleLine constant specifies the border/line as a double solid line
	WavyLine = 5

	// LeftStyle is the constant for "left-style" property tag.
	LeftStyle = "left-style"
	// RightStyle is the constant for "-right-style" property tag.
	RightStyle = "right-style"
	// TopStyle is the constant for "top-style" property tag.
	TopStyle = "top-style"
	// BottomStyle is the constant for "bottom-style" property tag.
	BottomStyle = "bottom-style"
	// LeftWidth is the constant for "left-width" property tag.
	LeftWidth = "left-width"
	// RightWidth is the constant for "-right-width" property tag.
	RightWidth = "right-width"
	// TopWidth is the constant for "top-width" property tag.
	TopWidth = "top-width"
	// BottomWidth is the constant for "bottom-width" property tag.
	BottomWidth = "bottom-width"
	// LeftColor is the constant for "left-color" property tag.
	LeftColor = "left-color"
	// RightColor is the constant for "-right-color" property tag.
	RightColor = "right-color"
	// TopColor is the constant for "top-color" property tag.
	TopColor = "top-color"
	// BottomColor is the constant for "bottom-color" property tag.
	BottomColor = "bottom-color"
)

// BorderProperty is the interface of a view border data
type BorderProperty interface {
	Properties
	fmt.Stringer
	stringWriter
	ViewBorders(session Session) ViewBorders
	delete(tag string)
	cssStyle(builder cssBuilder, session Session)
	cssWidth(builder cssBuilder, session Session)
	cssColor(builder cssBuilder, session Session)
	cssStyleValue(session Session) string
	cssWidthValue(session Session) string
	cssColorValue(session Session) string
}

type borderProperty struct {
	propertyList
}

func newBorderProperty(value interface{}) BorderProperty {
	border := new(borderProperty)
	border.properties = map[string]interface{}{}

	if value != nil {
		switch value := value.(type) {
		case BorderProperty:
			return value

		case DataNode:
			if value.Type() == ObjectNode {
				_ = border.setBorderObject(value.Object())
			} else {
				return nil
			}

		case DataObject:
			_ = border.setBorderObject(value)

		case ViewBorder:
			border.properties[Style] = value.Style
			border.properties[Width] = value.Width
			border.properties[ColorTag] = value.Color

		case ViewBorders:
			if value.Left.Style == value.Right.Style &&
				value.Left.Style == value.Top.Style &&
				value.Left.Style == value.Bottom.Style {
				border.properties[Style] = value.Left.Style
			} else {
				border.properties[LeftStyle] = value.Left.Style
				border.properties[RightStyle] = value.Right.Style
				border.properties[TopStyle] = value.Top.Style
				border.properties[BottomStyle] = value.Bottom.Style
			}
			if value.Left.Width.Equal(value.Right.Width) &&
				value.Left.Width.Equal(value.Top.Width) &&
				value.Left.Width.Equal(value.Bottom.Width) {
				border.properties[Width] = value.Left.Width
			} else {
				border.properties[LeftWidth] = value.Left.Width
				border.properties[RightWidth] = value.Right.Width
				border.properties[TopWidth] = value.Top.Width
				border.properties[BottomWidth] = value.Bottom.Width
			}
			if value.Left.Color == value.Right.Color &&
				value.Left.Color == value.Top.Color &&
				value.Left.Color == value.Bottom.Color {
				border.properties[ColorTag] = value.Left.Color
			} else {
				border.properties[LeftColor] = value.Left.Color
				border.properties[RightColor] = value.Right.Color
				border.properties[TopColor] = value.Top.Color
				border.properties[BottomColor] = value.Bottom.Color
			}

		default:
			invalidPropertyValue(Border, value)
			return nil
		}
	}
	return border
}

// NewBorder creates the new BorderProperty
func NewBorder(params Params) BorderProperty {
	border := new(borderProperty)
	border.properties = map[string]interface{}{}
	if params != nil {
		for _, tag := range []string{Style, Width, ColorTag, Left, Right, Top, Bottom,
			LeftStyle, RightStyle, TopStyle, BottomStyle,
			LeftWidth, RightWidth, TopWidth, BottomWidth,
			LeftColor, RightColor, TopColor, BottomColor} {
			if value, ok := params[tag]; ok && value != nil {
				border.Set(tag, value)
			}
		}
	}
	return border
}

func (border *borderProperty) normalizeTag(tag string) string {
	tag = strings.ToLower(tag)
	switch tag {
	case BorderLeft, CellBorderLeft:
		return Left

	case BorderRight, CellBorderRight:
		return Right

	case BorderTop, CellBorderTop:
		return Top

	case BorderBottom, CellBorderBottom:
		return Bottom

	case BorderStyle, CellBorderStyle:
		return Style

	case BorderLeftStyle, CellBorderLeftStyle, "style-left":
		return LeftStyle

	case BorderRightStyle, CellBorderRightStyle, "style-right":
		return RightStyle

	case BorderTopStyle, CellBorderTopStyle, "style-top":
		return TopStyle

	case BorderBottomStyle, CellBorderBottomStyle, "style-bottom":
		return BottomStyle

	case BorderWidth, CellBorderWidth:
		return Width

	case BorderLeftWidth, CellBorderLeftWidth, "width-left":
		return LeftWidth

	case BorderRightWidth, CellBorderRightWidth, "width-right":
		return RightWidth

	case BorderTopWidth, CellBorderTopWidth, "width-top":
		return TopWidth

	case BorderBottomWidth, CellBorderBottomWidth, "width-bottom":
		return BottomWidth

	case BorderColor, CellBorderColor:
		return ColorTag

	case BorderLeftColor, CellBorderLeftColor, "color-left":
		return LeftColor

	case BorderRightColor, CellBorderRightColor, "color-right":
		return RightColor

	case BorderTopColor, CellBorderTopColor, "color-top":
		return TopColor

	case BorderBottomColor, CellBorderBottomColor, "color-bottom":
		return BottomColor
	}

	return tag
}

func (border *borderProperty) writeString(buffer *strings.Builder, indent string) {
	buffer.WriteString("_{ ")
	comma := false

	write := func(tag string, value interface{}) {
		if comma {
			buffer.WriteString(", ")
		}
		buffer.WriteString(tag)
		buffer.WriteString(" = ")
		writePropertyValue(buffer, BorderStyle, value, indent)
		comma = true
	}

	for _, tag := range []string{Style, Width, ColorTag} {
		if value, ok := border.properties[tag]; ok {
			write(tag, value)
		}
	}

	for _, side := range []string{Top, Right, Bottom, Left} {
		style, okStyle := border.properties[side+"-"+Style]
		width, okWidth := border.properties[side+"-"+Width]
		color, okColor := border.properties[side+"-"+ColorTag]
		if okStyle || okWidth || okColor {
			if comma {
				buffer.WriteString(", ")
				comma = false
			}

			buffer.WriteString(side)
			buffer.WriteString(" = _{ ")
			if okStyle {
				write(Style, style)
			}
			if okWidth {
				write(Width, width)
			}
			if okColor {
				write(ColorTag, color)
			}
			buffer.WriteString(" }")
			comma = true
		}
	}

	buffer.WriteString(" }")
}

func (border *borderProperty) String() string {
	return runStringWriter(border)
}

func (border *borderProperty) setSingleBorderObject(prefix string, obj DataObject) bool {
	result := true
	if text, ok := obj.PropertyValue(Style); ok {
		if !border.setEnumProperty(prefix+"-style", text, enumProperties[BorderStyle].values) {
			result = false
		}
	}
	if text, ok := obj.PropertyValue(ColorTag); ok {
		if !border.setColorProperty(prefix+"-color", text) {
			result = false
		}
	}
	if text, ok := obj.PropertyValue("width"); ok {
		if !border.setSizeProperty(prefix+"-width", text) {
			result = false
		}
	}
	return result
}

func (border *borderProperty) setBorderObject(obj DataObject) bool {
	result := true

	for _, side := range []string{Top, Right, Bottom, Left} {
		if node := obj.PropertyWithTag(side); node != nil {
			if node.Type() == ObjectNode {
				if !border.setSingleBorderObject(side, node.Object()) {
					result = false
				}
			} else {
				notCompatibleType(side, node)
				result = false
			}
		}
	}

	if text, ok := obj.PropertyValue(Style); ok {
		values := split4Values(text)
		styles := enumProperties[BorderStyle].values
		switch len(values) {
		case 1:
			if !border.setEnumProperty(Style, values[0], styles) {
				result = false
			}

		case 4:
			for n, tag := range [4]string{TopStyle, RightStyle, BottomStyle, LeftStyle} {
				if !border.setEnumProperty(tag, values[n], styles) {
					result = false
				}
			}

		default:
			notCompatibleType(Style, text)
			result = false
		}
	}

	if text, ok := obj.PropertyValue(ColorTag); ok {
		values := split4Values(text)
		switch len(values) {
		case 1:
			if !border.setColorProperty(ColorTag, values[0]) {
				return false
			}

		case 4:
			for n, tag := range [4]string{TopColor, RightColor, BottomColor, LeftColor} {
				if !border.setColorProperty(tag, values[n]) {
					return false
				}
			}

		default:
			notCompatibleType(ColorTag, text)
			result = false
		}
	}

	if text, ok := obj.PropertyValue(Width); ok {
		values := split4Values(text)
		switch len(values) {
		case 1:
			if !border.setSizeProperty(Width, values[0]) {
				result = false
			}

		case 4:
			for n, tag := range [4]string{TopWidth, RightWidth, BottomWidth, LeftWidth} {
				if !border.setSizeProperty(tag, values[n]) {
					result = false
				}
			}

		default:
			notCompatibleType(Width, text)
			result = false
		}
	}

	return result
}

func (border *borderProperty) Remove(tag string) {
	tag = border.normalizeTag(tag)

	switch tag {
	case Style:
		for _, t := range []string{tag, TopStyle, RightStyle, BottomStyle, LeftStyle} {
			delete(border.properties, t)
		}

	case Width:
		for _, t := range []string{tag, TopWidth, RightWidth, BottomWidth, LeftWidth} {
			delete(border.properties, t)
		}

	case ColorTag:
		for _, t := range []string{tag, TopColor, RightColor, BottomColor, LeftColor} {
			delete(border.properties, t)
		}

	case Left, Right, Top, Bottom:
		border.Remove(tag + "-style")
		border.Remove(tag + "-width")
		border.Remove(tag + "-color")

	case LeftStyle, RightStyle, TopStyle, BottomStyle:
		delete(border.properties, tag)
		if style, ok := border.properties[Style]; ok && style != nil {
			for _, t := range []string{TopStyle, RightStyle, BottomStyle, LeftStyle} {
				if t != tag {
					if _, ok := border.properties[t]; !ok {
						border.properties[t] = style
					}
				}
			}
		}

	case LeftWidth, RightWidth, TopWidth, BottomWidth:
		delete(border.properties, tag)
		if width, ok := border.properties[Width]; ok && width != nil {
			for _, t := range []string{TopWidth, RightWidth, BottomWidth, LeftWidth} {
				if t != tag {
					if _, ok := border.properties[t]; !ok {
						border.properties[t] = width
					}
				}
			}
		}

	case LeftColor, RightColor, TopColor, BottomColor:
		delete(border.properties, tag)
		if color, ok := border.properties[ColorTag]; ok && color != nil {
			for _, t := range []string{TopColor, RightColor, BottomColor, LeftColor} {
				if t != tag {
					if _, ok := border.properties[t]; !ok {
						border.properties[t] = color
					}
				}
			}
		}

	default:
		ErrorLogF(`"%s" property is not compatible with the BorderProperty`, tag)
	}
}

func (border *borderProperty) Set(tag string, value interface{}) bool {
	if value == nil {
		border.Remove(tag)
		return true
	}

	tag = border.normalizeTag(tag)

	switch tag {
	case Style:
		if border.setEnumProperty(Style, value, enumProperties[BorderStyle].values) {
			for _, side := range []string{TopStyle, RightStyle, BottomStyle, LeftStyle} {
				delete(border.properties, side)
			}
			return true
		}

	case Width:
		if border.setSizeProperty(Width, value) {
			for _, side := range []string{TopWidth, RightWidth, BottomWidth, LeftWidth} {
				delete(border.properties, side)
			}
			return true
		}

	case ColorTag:
		if border.setColorProperty(ColorTag, value) {
			for _, side := range []string{TopColor, RightColor, BottomColor, LeftColor} {
				delete(border.properties, side)
			}
			return true
		}

	case LeftStyle, RightStyle, TopStyle, BottomStyle:
		return border.setEnumProperty(tag, value, enumProperties[BorderStyle].values)

	case LeftWidth, RightWidth, TopWidth, BottomWidth:
		return border.setSizeProperty(tag, value)

	case LeftColor, RightColor, TopColor, BottomColor:
		return border.setColorProperty(tag, value)

	case Left, Right, Top, Bottom:
		switch value := value.(type) {
		case string:
			if obj := ParseDataText(value); obj != nil {
				return border.setSingleBorderObject(tag, obj)
			}

		case DataObject:
			return border.setSingleBorderObject(tag, value)

		case BorderProperty:
			styleTag := tag + "-" + Style
			if style := value.Get(styleTag); value != nil {
				border.properties[styleTag] = style
			}
			colorTag := tag + "-" + ColorTag
			if color := value.Get(colorTag); value != nil {
				border.properties[colorTag] = color
			}
			widthTag := tag + "-" + Width
			if width := value.Get(widthTag); value != nil {
				border.properties[widthTag] = width
			}
			return true

		case ViewBorder:
			border.properties[tag+"-"+Style] = value.Style
			border.properties[tag+"-"+Width] = value.Width
			border.properties[tag+"-"+ColorTag] = value.Color
			return true
		}
		fallthrough

	default:
		ErrorLogF(`"%s" property is not compatible with the BorderProperty`, tag)
	}

	return false
}

func (border *borderProperty) Get(tag string) interface{} {
	tag = border.normalizeTag(tag)

	if result, ok := border.properties[tag]; ok {
		return result
	}

	switch tag {
	case Left, Right, Top, Bottom:
		result := newBorderProperty(nil)
		if style, ok := border.properties[tag+"-"+Style]; ok {
			result.Set(Style, style)
		} else if style, ok := border.properties[Style]; ok {
			result.Set(Style, style)
		}
		if width, ok := border.properties[tag+"-"+Width]; ok {
			result.Set(Width, width)
		} else if width, ok := border.properties[Width]; ok {
			result.Set(Width, width)
		}
		if color, ok := border.properties[tag+"-"+ColorTag]; ok {
			result.Set(ColorTag, color)
		} else if color, ok := border.properties[ColorTag]; ok {
			result.Set(ColorTag, color)
		}
		return result

	case LeftStyle, RightStyle, TopStyle, BottomStyle:
		if style, ok := border.properties[tag]; ok {
			return style
		}
		return border.properties[Style]

	case LeftWidth, RightWidth, TopWidth, BottomWidth:
		if width, ok := border.properties[tag]; ok {
			return width
		}
		return border.properties[Width]

	case LeftColor, RightColor, TopColor, BottomColor:
		if color, ok := border.properties[tag]; ok {
			return color
		}
		return border.properties[ColorTag]
	}

	return nil
}

func (border *borderProperty) delete(tag string) {
	tag = border.normalizeTag(tag)
	remove := []string{}

	switch tag {
	case Style:
		remove = []string{Style, LeftStyle, RightStyle, TopStyle, BottomStyle}

	case Width:
		remove = []string{Width, LeftWidth, RightWidth, TopWidth, BottomWidth}

	case ColorTag:
		remove = []string{ColorTag, LeftColor, RightColor, TopColor, BottomColor}

	case Left, Right, Top, Bottom:
		if border.Get(Style) != nil {
			border.properties[tag+"-"+Style] = 0
			remove = []string{tag + "-" + ColorTag, tag + "-" + Width}
		} else {
			remove = []string{tag + "-" + Style, tag + "-" + ColorTag, tag + "-" + Width}
		}

	case LeftStyle, RightStyle, TopStyle, BottomStyle:
		if border.Get(Style) != nil {
			border.properties[tag] = 0
		} else {
			remove = []string{tag}
		}

	case LeftWidth, RightWidth, TopWidth, BottomWidth:
		if border.Get(Width) != nil {
			border.properties[tag] = AutoSize()
		} else {
			remove = []string{tag}
		}

	case LeftColor, RightColor, TopColor, BottomColor:
		if border.Get(ColorTag) != nil {
			border.properties[tag] = 0
		} else {
			remove = []string{tag}
		}
	}

	for _, tag := range remove {
		delete(border.properties, tag)
	}
}

func (border *borderProperty) ViewBorders(session Session) ViewBorders {

	defStyle, _ := valueToEnum(border.getRaw(Style), BorderStyle, session, NoneLine)
	defWidth, _ := sizeProperty(border, Width, session)
	defColor, _ := colorProperty(border, ColorTag, session)

	getBorder := func(prefix string) ViewBorder {
		var result ViewBorder
		var ok bool
		if result.Style, ok = valueToEnum(border.getRaw(prefix+Style), BorderStyle, session, NoneLine); !ok {
			result.Style = defStyle
		}
		if result.Width, ok = sizeProperty(border, prefix+Width, session); !ok {
			result.Width = defWidth
		}
		if result.Color, ok = colorProperty(border, prefix+ColorTag, session); !ok {
			result.Color = defColor
		}
		return result
	}

	return ViewBorders{
		Top:    getBorder("top-"),
		Left:   getBorder("left-"),
		Right:  getBorder("right-"),
		Bottom: getBorder("bottom-"),
	}
}

func (border *borderProperty) cssStyle(builder cssBuilder, session Session) {
	borders := border.ViewBorders(session)
	values := enumProperties[BorderStyle].cssValues
	if borders.Top.Style == borders.Right.Style &&
		borders.Top.Style == borders.Left.Style &&
		borders.Top.Style == borders.Bottom.Style {
		builder.add(BorderStyle, values[borders.Top.Style])
	} else {
		builder.addValues(BorderStyle, " ", values[borders.Top.Style],
			values[borders.Right.Style], values[borders.Bottom.Style], values[borders.Left.Style])
	}
}

func (border *borderProperty) cssWidth(builder cssBuilder, session Session) {
	borders := border.ViewBorders(session)
	if borders.Top.Width == borders.Right.Width &&
		borders.Top.Width == borders.Left.Width &&
		borders.Top.Width == borders.Bottom.Width {
		if borders.Top.Width.Type != Auto {
			builder.add("border-width", borders.Top.Width.cssString("0"))
		}
	} else {
		builder.addValues("border-width", " ", borders.Top.Width.cssString("0"),
			borders.Right.Width.cssString("0"), borders.Bottom.Width.cssString("0"), borders.Left.Width.cssString("0"))
	}
}

func (border *borderProperty) cssColor(builder cssBuilder, session Session) {
	borders := border.ViewBorders(session)
	if borders.Top.Color == borders.Right.Color &&
		borders.Top.Color == borders.Left.Color &&
		borders.Top.Color == borders.Bottom.Color {
		if borders.Top.Color != 0 {
			builder.add("border-color", borders.Top.Color.cssString())
		}
	} else {
		builder.addValues("border-color", " ", borders.Top.Color.cssString(),
			borders.Right.Color.cssString(), borders.Bottom.Color.cssString(), borders.Left.Color.cssString())
	}
}

func (border *borderProperty) cssStyleValue(session Session) string {
	var builder cssValueBuilder
	border.cssStyle(&builder, session)
	return builder.finish()
}

func (border *borderProperty) cssWidthValue(session Session) string {
	var builder cssValueBuilder
	border.cssWidth(&builder, session)
	return builder.finish()
}

func (border *borderProperty) cssColorValue(session Session) string {
	var builder cssValueBuilder
	border.cssColor(&builder, session)
	return builder.finish()
}

// ViewBorder describes parameters of a view border
type ViewBorder struct {
	Style int
	Color Color
	Width SizeUnit
}

// ViewBorders describes the top, right, bottom, and left border of a view
type ViewBorders struct {
	Top, Right, Bottom, Left ViewBorder
}

// AllTheSame returns true if all borders are the same
func (border *ViewBorders) AllTheSame() bool {
	return border.Top.Style == border.Right.Style &&
		border.Top.Style == border.Left.Style &&
		border.Top.Style == border.Bottom.Style &&
		border.Top.Color == border.Right.Color &&
		border.Top.Color == border.Left.Color &&
		border.Top.Color == border.Bottom.Color &&
		border.Top.Width.Equal(border.Right.Width) &&
		border.Top.Width.Equal(border.Left.Width) &&
		border.Top.Width.Equal(border.Bottom.Width)
}

func getBorder(style Properties, tag string) BorderProperty {
	if value := style.Get(tag); value != nil {
		if border, ok := value.(BorderProperty); ok {
			return border
		}
	}
	return nil
}