rui_orig/cssBuilder.go

259 lines
5.4 KiB
Go

package rui
import (
"strings"
)
var systemStyles = map[string]string{
"ruiApp": "body",
"ruiDefault": "div",
"ruiArticle": "article",
"ruiSection": "section",
"ruiAside": "aside",
"ruiHeader": "header",
"ruiMain": "main",
"ruiFooter": "footer",
"ruiNavigation": "nav",
"ruiFigure": "figure",
"ruiFigureCaption": "figcaption",
"ruiButton": "button",
"ruiP": "p",
"ruiParagraph": "p",
"ruiH1": "h1",
"ruiH2": "h2",
"ruiH3": "h3",
"ruiH4": "h4",
"ruiH5": "h5",
"ruiH6": "h6",
"ruiBlockquote": "blockquote",
"ruiCode": "code",
"ruiTable": "table",
"ruiTableHead": "thead",
"ruiTableFoot": "tfoot",
"ruiTableRow": "tr",
"ruiTableColumn": "col",
"ruiTableCell": "td",
"ruiDropDownList": "select",
"ruiDropDownListItem": "option",
}
var disabledStyles = []string{
"ruiRoot",
"ruiPopupLayer",
"ruiAbsoluteLayout",
"ruiGridLayout",
"ruiListLayout",
"ruiStackLayout",
"ruiStackPageLayout",
"ruiTabsLayout",
"ruiImageView",
"ruiListView",
}
type cssBuilder interface {
add(key, value string)
addValues(key, separator string, values ...string)
}
type viewCSSBuilder struct {
buffer *strings.Builder
}
type cssValueBuilder struct {
buffer *strings.Builder
}
type cssStyleBuilder struct {
buffer *strings.Builder
media bool
}
func (builder *viewCSSBuilder) finish() string {
if builder.buffer == nil {
return ""
}
result := builder.buffer.String()
freeStringBuilder(builder.buffer)
builder.buffer = nil
return result
}
func (builder *viewCSSBuilder) add(key, value string) {
if value != "" {
if builder.buffer == nil {
builder.buffer = allocStringBuilder()
} else if builder.buffer.Len() > 0 {
builder.buffer.WriteRune(' ')
}
builder.buffer.WriteString(key)
builder.buffer.WriteString(": ")
builder.buffer.WriteString(value)
builder.buffer.WriteRune(';')
}
}
func (builder *viewCSSBuilder) addValues(key, separator string, values ...string) {
if len(values) == 0 {
return
}
if builder.buffer == nil {
builder.buffer = allocStringBuilder()
} else if builder.buffer.Len() > 0 {
builder.buffer.WriteRune(' ')
}
builder.buffer.WriteString(key)
builder.buffer.WriteString(": ")
for i, value := range values {
if i > 0 {
builder.buffer.WriteString(separator)
}
builder.buffer.WriteString(value)
}
builder.buffer.WriteRune(';')
}
func (builder *cssValueBuilder) finish() string {
if builder.buffer == nil {
return ""
}
result := builder.buffer.String()
freeStringBuilder(builder.buffer)
builder.buffer = nil
return result
}
func (builder *cssValueBuilder) add(key, value string) {
if value != "" {
if builder.buffer == nil {
builder.buffer = allocStringBuilder()
}
builder.buffer.WriteString(value)
}
}
func (builder *cssValueBuilder) addValues(key, separator string, values ...string) {
if len(values) > 0 {
if builder.buffer == nil {
builder.buffer = allocStringBuilder()
}
for i, value := range values {
if i > 0 {
builder.buffer.WriteString(separator)
}
builder.buffer.WriteString(value)
}
}
}
func (builder *cssStyleBuilder) init() {
builder.buffer = allocStringBuilder()
builder.buffer.Grow(16 * 1024)
}
func (builder *cssStyleBuilder) finish() string {
if builder.buffer == nil {
return ""
}
result := builder.buffer.String()
freeStringBuilder(builder.buffer)
builder.buffer = nil
return result
}
func (builder *cssStyleBuilder) startMedia(rule string) {
if builder.buffer == nil {
builder.init()
}
builder.buffer.WriteString(`@media screen`)
builder.buffer.WriteString(rule)
builder.buffer.WriteString(` {\n`)
builder.media = true
}
func (builder *cssStyleBuilder) endMedia() {
if builder.buffer == nil {
builder.init()
}
builder.buffer.WriteString(`}\n`)
builder.media = false
}
func (builder *cssStyleBuilder) startStyle(name string) {
for _, disabledName := range disabledStyles {
if name == disabledName {
return
}
}
if builder.buffer == nil {
builder.init()
}
if builder.media {
builder.buffer.WriteString(`\t`)
}
if sysName, ok := systemStyles[name]; ok {
builder.buffer.WriteString(sysName)
} else {
builder.buffer.WriteRune('.')
builder.buffer.WriteString(name)
}
builder.buffer.WriteString(` {\n`)
}
func (builder *cssStyleBuilder) endStyle() {
if builder.buffer == nil {
builder.init()
}
if builder.media {
builder.buffer.WriteString(`\t`)
}
builder.buffer.WriteString(`}\n`)
}
func (builder *cssStyleBuilder) add(key, value string) {
if value != "" {
if builder.buffer == nil {
builder.init()
}
if builder.media {
builder.buffer.WriteString(`\t`)
}
builder.buffer.WriteString(`\t`)
builder.buffer.WriteString(key)
builder.buffer.WriteString(`: `)
builder.buffer.WriteString(value)
builder.buffer.WriteString(`;\n`)
}
}
func (builder *cssStyleBuilder) addValues(key, separator string, values ...string) {
if len(values) == 0 {
return
}
if builder.buffer == nil {
builder.init()
}
if builder.media {
builder.buffer.WriteString(`\t`)
}
builder.buffer.WriteString(`\t`)
builder.buffer.WriteString(key)
builder.buffer.WriteString(`: `)
for i, value := range values {
if i > 0 {
builder.buffer.WriteString(separator)
}
builder.buffer.WriteString(value)
}
builder.buffer.WriteString(`;\n`)
}