mirror of
https://github.com/discourse/discourse.git
synced 2024-11-23 08:09:33 +08:00
882b0aac19
Themes can now declare custom colors that get compiled in core's color definitions stylesheet, thus allowing themes to better support dark/light color schemes.
For example, if you need your theme to use tertiary for an element in a light color scheme and quaternary in a dark scheme, you can add the following SCSS to your theme's `color_definitions.scss` file:
```
:root {
--mytheme-tertiary-or-quaternary: #{dark-light-choose($tertiary, $quaternary)};
}
```
And then use the `--mytheme-tertiary-or-quaternary` variable as the color property of that element. You can also use this file to add color variables that use SCSS color transformation functions (lighten, darken, saturate, etc.) without compromising your theme's compatibility with different color schemes.
541 lines
18 KiB
Ruby
541 lines
18 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
class ThemeField < ActiveRecord::Base
|
|
|
|
belongs_to :upload
|
|
has_one :javascript_cache, dependent: :destroy
|
|
|
|
scope :find_by_theme_ids, ->(theme_ids) {
|
|
return none unless theme_ids.present?
|
|
|
|
where(theme_id: theme_ids)
|
|
.joins(
|
|
"JOIN (
|
|
SELECT #{theme_ids.map.with_index { |id, idx| "#{id.to_i} AS theme_id, #{idx} AS theme_sort_column" }.join(" UNION ALL SELECT ")}
|
|
) as X ON X.theme_id = theme_fields.theme_id")
|
|
.order("theme_sort_column")
|
|
}
|
|
|
|
scope :filter_locale_fields, ->(locale_codes) {
|
|
return none unless locale_codes.present?
|
|
|
|
where(target_id: Theme.targets[:translations], name: locale_codes)
|
|
.joins(self.sanitize_sql_array([
|
|
"JOIN (
|
|
SELECT * FROM (VALUES #{locale_codes.map { "(?)" }.join(",")}) as Y (locale_code, locale_sort_column)
|
|
) as Y ON Y.locale_code = theme_fields.name",
|
|
*locale_codes.map.with_index { |code, index| [code, index] }
|
|
]))
|
|
.order("Y.locale_sort_column")
|
|
}
|
|
|
|
scope :find_first_locale_fields, ->(theme_ids, locale_codes) {
|
|
find_by_theme_ids(theme_ids)
|
|
.filter_locale_fields(locale_codes)
|
|
.reorder("X.theme_sort_column", "Y.locale_sort_column")
|
|
.select("DISTINCT ON (X.theme_sort_column) *")
|
|
}
|
|
|
|
def self.types
|
|
@types ||= Enum.new(html: 0,
|
|
scss: 1,
|
|
theme_upload_var: 2,
|
|
theme_color_var: 3, # No longer used
|
|
theme_var: 4, # No longer used
|
|
yaml: 5,
|
|
js: 6)
|
|
end
|
|
|
|
def self.theme_var_type_ids
|
|
@theme_var_type_ids ||= [2]
|
|
end
|
|
|
|
def self.force_recompilation!
|
|
find_each do |field|
|
|
field.compiler_version = 0
|
|
field.ensure_baked!
|
|
end
|
|
end
|
|
|
|
validates :name, format: { with: /\A[a-z_][a-z0-9_-]*\z/i },
|
|
if: Proc.new { |field| ThemeField.theme_var_type_ids.include?(field.type_id) }
|
|
|
|
belongs_to :theme
|
|
|
|
def process_html(html)
|
|
errors = []
|
|
javascript_cache || build_javascript_cache
|
|
|
|
errors << I18n.t("themes.errors.optimized_link") if contains_optimized_link?(html)
|
|
|
|
js_compiler = ThemeJavascriptCompiler.new(theme_id, self.theme.name)
|
|
|
|
doc = Nokogiri::HTML5.fragment(html)
|
|
|
|
doc.css('script[type="text/x-handlebars"]').each do |node|
|
|
name = node["name"] || node["data-template-name"] || "broken"
|
|
is_raw = name =~ /\.(raw|hbr)$/
|
|
hbs_template = node.inner_html
|
|
|
|
begin
|
|
if is_raw
|
|
js_compiler.append_raw_template(name, hbs_template)
|
|
else
|
|
js_compiler.append_ember_template(name, hbs_template)
|
|
end
|
|
rescue ThemeJavascriptCompiler::CompileError => ex
|
|
errors << ex.message
|
|
end
|
|
|
|
node.remove
|
|
end
|
|
|
|
doc.css('script[type="text/discourse-plugin"]').each do |node|
|
|
next unless node['version'].present?
|
|
begin
|
|
js_compiler.append_plugin_script(node.inner_html, node['version'])
|
|
rescue ThemeJavascriptCompiler::CompileError => ex
|
|
errors << ex.message
|
|
end
|
|
|
|
node.remove
|
|
end
|
|
|
|
doc.css('script').each do |node|
|
|
next unless inline_javascript?(node)
|
|
js_compiler.append_raw_script(node.inner_html)
|
|
node.remove
|
|
end
|
|
|
|
errors.each do |error|
|
|
js_compiler.append_js_error(error)
|
|
end
|
|
|
|
settings_hash = theme.build_settings_hash
|
|
js_compiler.prepend_settings(settings_hash) if js_compiler.content.present? && settings_hash.present?
|
|
javascript_cache.content = js_compiler.content
|
|
javascript_cache.save!
|
|
|
|
doc.add_child("<script src='#{javascript_cache.url}'></script>") if javascript_cache.content.present?
|
|
[doc.to_s, errors&.join("\n")]
|
|
end
|
|
|
|
def process_extra_js(content)
|
|
errors = []
|
|
|
|
js_compiler = ThemeJavascriptCompiler.new(theme_id, theme.name)
|
|
filename, extension = name.split(".", 2)
|
|
begin
|
|
case extension
|
|
when "js.es6", "js"
|
|
js_compiler.append_module(content, filename)
|
|
when "hbs"
|
|
js_compiler.append_ember_template(filename.sub("discourse/templates/", ""), content)
|
|
when "hbr", "raw.hbs"
|
|
js_compiler.append_raw_template(filename.sub("discourse/templates/", ""), content)
|
|
else
|
|
raise ThemeJavascriptCompiler::CompileError.new(I18n.t("themes.compile_error.unrecognized_extension", extension: extension))
|
|
end
|
|
rescue ThemeJavascriptCompiler::CompileError => ex
|
|
errors << ex.message
|
|
end
|
|
|
|
[js_compiler.content, errors&.join("\n")]
|
|
end
|
|
|
|
def raw_translation_data(internal: false)
|
|
# Might raise ThemeTranslationParser::InvalidYaml
|
|
ThemeTranslationParser.new(self, internal: internal).load
|
|
end
|
|
|
|
def translation_data(with_overrides: true, internal: false, fallback_fields: nil)
|
|
fallback_fields ||= theme.theme_fields.filter_locale_fields(I18n.fallbacks[name])
|
|
|
|
fallback_data = fallback_fields.each_with_index.map do |field, index|
|
|
begin
|
|
field.raw_translation_data(internal: internal)
|
|
rescue ThemeTranslationParser::InvalidYaml
|
|
# If this is the locale with the error, raise it.
|
|
# If not, let the other theme_field raise the error when it processes itself
|
|
raise if field.id == id
|
|
{}
|
|
end
|
|
end
|
|
|
|
# TODO: Deduplicate the fallback data in the same way as JSLocaleHelper#load_translations_merged
|
|
# this would reduce the size of the payload, without affecting functionality
|
|
data = {}
|
|
fallback_data.each { |hash| data.merge!(hash) }
|
|
overrides = theme.translation_override_hash.deep_symbolize_keys
|
|
data.deep_merge!(overrides) if with_overrides
|
|
data
|
|
end
|
|
|
|
def process_translation
|
|
errors = []
|
|
javascript_cache || build_javascript_cache
|
|
js_compiler = ThemeJavascriptCompiler.new(theme_id, self.theme.name)
|
|
begin
|
|
data = translation_data
|
|
|
|
js = <<~JS
|
|
export default {
|
|
name: "theme-#{theme_id}-translations",
|
|
initialize() {
|
|
/* Translation data for theme #{self.theme_id} (#{self.name})*/
|
|
const data = #{data.to_json};
|
|
|
|
for (let lang in data){
|
|
let cursor = I18n.translations;
|
|
for (let key of [lang, "js", "theme_translations"]){
|
|
cursor = cursor[key] = cursor[key] || {};
|
|
}
|
|
cursor[#{self.theme_id}] = data[lang];
|
|
}
|
|
}
|
|
};
|
|
JS
|
|
|
|
js_compiler.append_module(js, "discourse/pre-initializers/theme-#{theme_id}-translations", include_variables: false)
|
|
rescue ThemeTranslationParser::InvalidYaml => e
|
|
errors << e.message
|
|
end
|
|
|
|
javascript_cache.content = js_compiler.content
|
|
javascript_cache.save!
|
|
doc = ""
|
|
doc = "<script src='#{javascript_cache.url}'></script>" if javascript_cache.content.present?
|
|
[doc, errors&.join("\n")]
|
|
end
|
|
|
|
def validate_yaml!
|
|
return unless self.name == "yaml"
|
|
|
|
errors = []
|
|
begin
|
|
ThemeSettingsParser.new(self).load do |name, default, type, opts|
|
|
setting = ThemeSetting.new(name: name, data_type: type, theme: theme)
|
|
translation_key = "themes.settings_errors"
|
|
|
|
if setting.invalid?
|
|
setting.errors.details.each_pair do |attribute, _errors|
|
|
_errors.each do |hash|
|
|
errors << I18n.t("#{translation_key}.#{attribute}_#{hash[:error]}", name: name)
|
|
end
|
|
end
|
|
end
|
|
|
|
if default.nil?
|
|
errors << I18n.t("#{translation_key}.default_value_missing", name: name)
|
|
end
|
|
|
|
if (min = opts[:min]) && (max = opts[:max])
|
|
unless ThemeSetting.value_in_range?(default, (min..max), type)
|
|
errors << I18n.t("#{translation_key}.default_out_range", name: name)
|
|
end
|
|
end
|
|
|
|
unless ThemeSetting.acceptable_value_for_type?(default, type)
|
|
errors << I18n.t("#{translation_key}.default_not_match_type", name: name)
|
|
end
|
|
end
|
|
rescue ThemeSettingsParser::InvalidYaml => e
|
|
errors << e.message
|
|
end
|
|
|
|
self.error = errors.join("\n").presence
|
|
end
|
|
|
|
def self.guess_type(name:, target:)
|
|
if basic_targets.include?(target.to_s) && html_fields.include?(name.to_s)
|
|
types[:html]
|
|
elsif basic_targets.include?(target.to_s) && scss_fields.include?(name.to_s)
|
|
types[:scss]
|
|
elsif target.to_s == "extra_scss"
|
|
types[:scss]
|
|
elsif target.to_s == "extra_js"
|
|
types[:js]
|
|
elsif target.to_s == "settings" || target.to_s == "translations"
|
|
types[:yaml]
|
|
end
|
|
end
|
|
|
|
def self.html_fields
|
|
@html_fields ||= %w(body_tag head_tag header footer after_header)
|
|
end
|
|
|
|
def self.scss_fields
|
|
@scss_fields ||= %w(scss embedded_scss color_definitions)
|
|
end
|
|
|
|
def self.basic_targets
|
|
@basic_targets ||= %w(common desktop mobile)
|
|
end
|
|
|
|
def basic_html_field?
|
|
ThemeField.basic_targets.include?(Theme.targets[self.target_id].to_s) &&
|
|
ThemeField.html_fields.include?(self.name)
|
|
end
|
|
|
|
def extra_js_field?
|
|
Theme.targets[self.target_id] == :extra_js
|
|
end
|
|
|
|
def basic_scss_field?
|
|
ThemeField.basic_targets.include?(Theme.targets[self.target_id].to_s) &&
|
|
ThemeField.scss_fields.include?(self.name)
|
|
end
|
|
|
|
def extra_scss_field?
|
|
Theme.targets[self.target_id] == :extra_scss
|
|
end
|
|
|
|
def settings_field?
|
|
Theme.targets[:settings] == self.target_id
|
|
end
|
|
|
|
def translation_field?
|
|
Theme.targets[:translations] == self.target_id
|
|
end
|
|
|
|
def svg_sprite_field?
|
|
ThemeField.theme_var_type_ids.include?(self.type_id) && self.name == SvgSprite.theme_sprite_variable_name
|
|
end
|
|
|
|
def ensure_baked!
|
|
needs_baking = !self.value_baked || compiler_version != Theme.compiler_version
|
|
return unless needs_baking
|
|
|
|
if basic_html_field? || translation_field?
|
|
self.value_baked, self.error = translation_field? ? process_translation : process_html(self.value)
|
|
self.error = nil unless self.error.present?
|
|
self.compiler_version = Theme.compiler_version
|
|
DB.after_commit { CSP::Extension.clear_theme_extensions_cache! }
|
|
elsif extra_js_field?
|
|
self.value_baked, self.error = process_extra_js(self.value)
|
|
self.error = nil unless self.error.present?
|
|
self.compiler_version = Theme.compiler_version
|
|
elsif basic_scss_field?
|
|
ensure_scss_compiles!
|
|
DB.after_commit { Stylesheet::Manager.clear_theme_cache! }
|
|
elsif settings_field?
|
|
validate_yaml!
|
|
theme.clear_cached_settings!
|
|
DB.after_commit { CSP::Extension.clear_theme_extensions_cache! }
|
|
DB.after_commit { SvgSprite.expire_cache }
|
|
self.value_baked = "baked"
|
|
self.compiler_version = Theme.compiler_version
|
|
elsif svg_sprite_field?
|
|
DB.after_commit { SvgSprite.expire_cache }
|
|
self.error = nil
|
|
self.value_baked = "baked"
|
|
self.compiler_version = Theme.compiler_version
|
|
end
|
|
|
|
if self.will_save_change_to_value_baked? ||
|
|
self.will_save_change_to_compiler_version? ||
|
|
self.will_save_change_to_error?
|
|
|
|
self.update_columns(value_baked: value_baked,
|
|
compiler_version: compiler_version,
|
|
error: error)
|
|
end
|
|
end
|
|
|
|
def compile_scss
|
|
Stylesheet::Compiler.compile("@import \"common/foundation/variables\"; @import \"common/foundation/mixins\"; @import \"theme_variables\"; @import \"theme_field\";",
|
|
"theme.scss",
|
|
theme_field: self.value.dup,
|
|
theme: self.theme
|
|
)
|
|
end
|
|
|
|
def ensure_scss_compiles!
|
|
result = ["failed"]
|
|
begin
|
|
result = compile_scss
|
|
if contains_optimized_link?(self.value)
|
|
self.error = I18n.t("themes.errors.optimized_link")
|
|
else
|
|
self.error = nil unless error.nil?
|
|
end
|
|
rescue SassC::SyntaxError => e
|
|
self.error = e.message unless self.destroyed?
|
|
end
|
|
self.compiler_version = Theme.compiler_version
|
|
self.value_baked = Digest::SHA1.hexdigest(result.join(",")) # We don't use the compiled CSS here, we just use it to invalidate the stylesheet cache
|
|
end
|
|
|
|
def target_name
|
|
Theme.targets[target_id].to_s
|
|
end
|
|
|
|
def contains_optimized_link?(text)
|
|
OptimizedImage::URL_REGEX.match?(text)
|
|
end
|
|
|
|
class ThemeFileMatcher
|
|
OPTIONS = %i{name type target}
|
|
# regex: used to match file names to fields (import).
|
|
# can contain named capture groups for name/type/target
|
|
# canonical: a lambda which converts name/type/target
|
|
# to filename (export)
|
|
# targets/names/types: can be nil if any value is allowed
|
|
# single value
|
|
# array of allowed values
|
|
def initialize(regex:, canonical:, targets:, names:, types:)
|
|
@allowed_values = {}
|
|
@allowed_values[:names] = Array(names) if names
|
|
@allowed_values[:targets] = Array(targets) if targets
|
|
@allowed_values[:types] = Array(types) if types
|
|
@canonical = canonical
|
|
@regex = regex
|
|
end
|
|
|
|
def opts_from_filename(filename)
|
|
match = @regex.match(filename)
|
|
return false unless match
|
|
hash = {}
|
|
OPTIONS.each do |option|
|
|
plural = :"#{option}s"
|
|
hash[option] = @allowed_values[plural][0] if @allowed_values[plural] && @allowed_values[plural].length == 1
|
|
hash[option] = match[option] if hash[option].nil?
|
|
end
|
|
hash
|
|
end
|
|
|
|
def filename_from_opts(opts)
|
|
is_match = OPTIONS.all? do |option|
|
|
plural = :"#{option}s"
|
|
next true if @allowed_values[plural] == nil # Allows any value
|
|
next true if @allowed_values[plural].include?(opts[option]) # Value is allowed
|
|
end
|
|
is_match ? @canonical.call(opts) : nil
|
|
end
|
|
end
|
|
|
|
FILE_MATCHERS = [
|
|
ThemeFileMatcher.new(regex: /^(?<target>(?:mobile|desktop|common))\/(?<name>(?:head_tag|header|after_header|body_tag|footer))\.html$/,
|
|
targets: [:mobile, :desktop, :common], names: ["head_tag", "header", "after_header", "body_tag", "footer"], types: :html,
|
|
canonical: -> (h) { "#{h[:target]}/#{h[:name]}.html" }),
|
|
ThemeFileMatcher.new(regex: /^(?<target>(?:mobile|desktop|common))\/(?:\k<target>)\.scss$/,
|
|
targets: [:mobile, :desktop, :common], names: "scss", types: :scss,
|
|
canonical: -> (h) { "#{h[:target]}/#{h[:target]}.scss" }),
|
|
ThemeFileMatcher.new(regex: /^common\/embedded\.scss$/,
|
|
targets: :common, names: "embedded_scss", types: :scss,
|
|
canonical: -> (h) { "common/embedded.scss" }),
|
|
ThemeFileMatcher.new(regex: /^common\/color_definitions\.scss$/,
|
|
targets: :common, names: "color_definitions", types: :scss,
|
|
canonical: -> (h) { "common/color_definitions.scss" }),
|
|
ThemeFileMatcher.new(regex: /^(?:scss|stylesheets)\/(?<name>.+)\.scss$/,
|
|
targets: :extra_scss, names: nil, types: :scss,
|
|
canonical: -> (h) { "stylesheets/#{h[:name]}.scss" }),
|
|
ThemeFileMatcher.new(regex: /^javascripts\/(?<name>.+)$/,
|
|
targets: :extra_js, names: nil, types: :js,
|
|
canonical: -> (h) { "javascripts/#{h[:name]}" }),
|
|
ThemeFileMatcher.new(regex: /^settings\.ya?ml$/,
|
|
names: "yaml", types: :yaml, targets: :settings,
|
|
canonical: -> (h) { "settings.yml" }),
|
|
ThemeFileMatcher.new(regex: /^locales\/(?<name>(?:#{I18n.available_locales.join("|")}))\.yml$/,
|
|
names: I18n.available_locales.map(&:to_s), types: :yaml, targets: :translations,
|
|
canonical: -> (h) { "locales/#{h[:name]}.yml" }),
|
|
ThemeFileMatcher.new(regex: /(?!)/, # Never match uploads by filename, they must be named in about.json
|
|
names: nil, types: :theme_upload_var, targets: :common,
|
|
canonical: -> (h) { "assets/#{h[:name]}#{File.extname(h[:filename])}" }),
|
|
]
|
|
|
|
# For now just work for standard fields
|
|
def file_path
|
|
FILE_MATCHERS.each do |matcher|
|
|
if filename = matcher.filename_from_opts(target: target_name.to_sym,
|
|
name: name,
|
|
type: ThemeField.types[type_id],
|
|
filename: upload&.original_filename)
|
|
return filename
|
|
end
|
|
end
|
|
nil # Not a file (e.g. a theme variable/color)
|
|
end
|
|
|
|
def self.opts_from_file_path(filename)
|
|
FILE_MATCHERS.each do |matcher|
|
|
if opts = matcher.opts_from_filename(filename)
|
|
return opts
|
|
end
|
|
end
|
|
nil
|
|
end
|
|
|
|
def dependent_fields
|
|
if extra_scss_field?
|
|
return theme.theme_fields.where(target_id: ThemeField.basic_targets.map { |t| Theme.targets[t.to_sym] },
|
|
name: ThemeField.scss_fields)
|
|
elsif settings_field?
|
|
return theme.theme_fields.where(target_id: ThemeField.basic_targets.map { |t| Theme.targets[t.to_sym] },
|
|
name: ThemeField.scss_fields + ThemeField.html_fields)
|
|
end
|
|
ThemeField.none
|
|
end
|
|
|
|
def invalidate_baked!
|
|
update_column(:value_baked, nil)
|
|
dependent_fields.update_all(value_baked: nil)
|
|
end
|
|
|
|
before_save do
|
|
if will_save_change_to_value? && !will_save_change_to_value_baked?
|
|
self.value_baked = nil
|
|
end
|
|
end
|
|
|
|
after_save do
|
|
dependent_fields.each(&:invalidate_baked!)
|
|
end
|
|
|
|
after_commit do
|
|
# TODO message for mobile vs desktop
|
|
MessageBus.publish "/header-change/#{theme.id}", self.value if theme && self.name == "header"
|
|
MessageBus.publish "/footer-change/#{theme.id}", self.value if theme && self.name == "footer"
|
|
end
|
|
|
|
private
|
|
|
|
JAVASCRIPT_TYPES = %w(
|
|
text/javascript
|
|
application/javascript
|
|
application/ecmascript
|
|
)
|
|
|
|
def inline_javascript?(node)
|
|
if node['src'].present?
|
|
false
|
|
elsif node['type'].present?
|
|
JAVASCRIPT_TYPES.include?(node['type'].downcase)
|
|
else
|
|
true
|
|
end
|
|
end
|
|
end
|
|
|
|
# == Schema Information
|
|
#
|
|
# Table name: theme_fields
|
|
#
|
|
# id :integer not null, primary key
|
|
# theme_id :integer not null
|
|
# target_id :integer not null
|
|
# name :string(255) not null
|
|
# value :text not null
|
|
# value_baked :text
|
|
# created_at :datetime not null
|
|
# updated_at :datetime not null
|
|
# compiler_version :string(50) default("0"), not null
|
|
# error :string
|
|
# upload_id :integer
|
|
# type_id :integer default(0), not null
|
|
#
|
|
# Indexes
|
|
#
|
|
# theme_field_unique_index (theme_id,target_id,type_id,name) UNIQUE
|
|
#
|