devextreme
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HTML5 JavaScript Component Suite for Responsive Web Development
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JavaScript
/**
* DevExtreme (localization/message.js)
* Version: 18.1.3
* Build date: Tue May 15 2018
*
* Copyright (c) 2012 - 2018 Developer Express Inc. ALL RIGHTS RESERVED
* Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
*/
;
var $ = require("../core/renderer"),
dependencyInjector = require("../core/utils/dependency_injector"),
extend = require("../core/utils/extend").extend,
each = require("../core/utils/iterator").each,
stringFormat = require("../core/utils/string").format,
humanize = require("../core/utils/inflector").humanize,
coreLocalization = require("./core");
require("./core");
var PARENT_LOCALE_SEPARATOR = "-";
var baseDictionary = extend(true, {}, require("./default_messages"));
var parentLocales = require("./cldr-data/parentLocales");
var getParentLocale = function(locale) {
var parentLocale = parentLocales[locale];
if (parentLocale) {
return "root" !== parentLocale && parentLocale
}
return locale.substr(0, locale.lastIndexOf(PARENT_LOCALE_SEPARATOR))
};
var getDataByLocale = function(localeData, locale) {
return localeData[locale] || {}
};
var getValueByClosestLocale = function(localeData, locale, key) {
var isRootLocale, value = getDataByLocale(localeData, locale)[key];
while (!value && !isRootLocale) {
locale = getParentLocale(locale);
if (locale) {
value = getDataByLocale(localeData, locale)[key]
} else {
isRootLocale = true
}
}
return value
};
var newMessages = {};
var messageLocalization = dependencyInjector({
_dictionary: baseDictionary,
load: function(messages) {
extend(true, this._dictionary, messages)
},
_localizablePrefix: "@",
setup: function(localizablePrefix) {
this._localizablePrefix = localizablePrefix
},
localizeString: function(text) {
var that = this,
regex = new RegExp("(^|[^a-zA-Z_0-9" + that._localizablePrefix + "-]+)(" + that._localizablePrefix + "{1,2})([a-zA-Z_0-9-]+)", "g"),
escapeString = that._localizablePrefix + that._localizablePrefix;
return text.replace(regex, function(str, prefix, escape, localizationKey) {
var result, defaultResult = that._localizablePrefix + localizationKey;
if (escape !== escapeString) {
result = that.format(localizationKey)
}
if (!result) {
newMessages[localizationKey] = humanize(localizationKey)
}
return prefix + (result || defaultResult)
})
},
_messageLoaded: function(key, locale) {
return void 0 !== getValueByClosestLocale(this._dictionary, locale || coreLocalization.locale(), key)
},
localizeNode: function(node) {
var that = this;
$(node).each(function(index, nodeItem) {
if (!nodeItem.nodeType) {
return
}
if (3 === nodeItem.nodeType) {
nodeItem.nodeValue = that.localizeString(nodeItem.nodeValue)
} else {
if (!$(nodeItem).is("iframe")) {
each(nodeItem.attributes || [], function(index, attr) {
if ("string" === typeof attr.value) {
var localizedValue = that.localizeString(attr.value);
if (attr.value !== localizedValue) {
attr.value = localizedValue
}
}
});
$(nodeItem).contents().each(function(index, node) {
that.localizeNode(node)
})
}
}
})
},
getMessagesByLocales: function() {
return this._dictionary
},
getDictionary: function(onlyNew) {
if (onlyNew) {
return newMessages
}
return extend({}, newMessages, this.getMessagesByLocales()[coreLocalization.locale()])
},
getFormatter: function(key) {
return this._getFormatterBase(key) || this._getFormatterBase(key, "en")
},
_getFormatterBase: function(key, locale) {
var message = getValueByClosestLocale(this._dictionary, locale || coreLocalization.locale(), key);
if (message) {
return function() {
var args = 1 === arguments.length && Array.isArray(arguments[0]) ? arguments[0].slice(0) : Array.prototype.slice.call(arguments, 0);
args.unshift(message);
return stringFormat.apply(this, args)
}
}
},
format: function(key) {
var formatter = this.getFormatter(key);
var values = Array.prototype.slice.call(arguments, 1);
return formatter && formatter.apply(this, values) || ""
}
});
module.exports = messageLocalization;