252 lines
8.5 KiB
JavaScript
252 lines
8.5 KiB
JavaScript
/* *
|
|
*
|
|
* Accessibility module - internationalization support
|
|
*
|
|
* (c) 2010-2020 Highsoft AS
|
|
* Author: Øystein Moseng
|
|
*
|
|
* License: www.highcharts.com/license
|
|
*
|
|
* !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
|
|
*
|
|
* */
|
|
'use strict';
|
|
import H from '../../parts/Globals.js';
|
|
import U from '../../parts/Utilities.js';
|
|
var format = U.format, pick = U.pick;
|
|
/* eslint-disable valid-jsdoc */
|
|
/**
|
|
* String trim that works for IE6-8 as well.
|
|
*
|
|
* @private
|
|
* @function stringTrim
|
|
*
|
|
* @param {string} str
|
|
* The input string
|
|
*
|
|
* @return {string}
|
|
* The trimmed string
|
|
*/
|
|
function stringTrim(str) {
|
|
return str.trim && str.trim() || str.replace(/^\s+|\s+$/g, '');
|
|
}
|
|
/**
|
|
* i18n utility function. Format a single array or plural statement in a format
|
|
* string. If the statement is not an array or plural statement, returns the
|
|
* statement within brackets. Invalid array statements return an empty string.
|
|
*
|
|
* @private
|
|
* @function formatExtendedStatement
|
|
*
|
|
* @param {string} statement
|
|
*
|
|
* @param {Highcharts.Dictionary<*>} ctx
|
|
* Context to apply to the format string.
|
|
*
|
|
* @return {string}
|
|
*/
|
|
function formatExtendedStatement(statement, ctx) {
|
|
var eachStart = statement.indexOf('#each('), pluralStart = statement.indexOf('#plural('), indexStart = statement.indexOf('['), indexEnd = statement.indexOf(']'), arr, result;
|
|
// Dealing with an each-function?
|
|
if (eachStart > -1) {
|
|
var eachEnd = statement.slice(eachStart).indexOf(')') + eachStart, preEach = statement.substring(0, eachStart), postEach = statement.substring(eachEnd + 1), eachStatement = statement.substring(eachStart + 6, eachEnd), eachArguments = eachStatement.split(','), lenArg = Number(eachArguments[1]), len;
|
|
result = '';
|
|
arr = ctx[eachArguments[0]];
|
|
if (arr) {
|
|
lenArg = isNaN(lenArg) ? arr.length : lenArg;
|
|
len = lenArg < 0 ?
|
|
arr.length + lenArg :
|
|
Math.min(lenArg, arr.length); // Overshoot
|
|
// Run through the array for the specified length
|
|
for (var i = 0; i < len; ++i) {
|
|
result += preEach + arr[i] + postEach;
|
|
}
|
|
}
|
|
return result.length ? result : '';
|
|
}
|
|
// Dealing with a plural-function?
|
|
if (pluralStart > -1) {
|
|
var pluralEnd = statement.slice(pluralStart).indexOf(')') + pluralStart, pluralStatement = statement.substring(pluralStart + 8, pluralEnd), pluralArguments = pluralStatement.split(','), num = Number(ctx[pluralArguments[0]]);
|
|
switch (num) {
|
|
case 0:
|
|
result = pick(pluralArguments[4], pluralArguments[1]);
|
|
break;
|
|
case 1:
|
|
result = pick(pluralArguments[2], pluralArguments[1]);
|
|
break;
|
|
case 2:
|
|
result = pick(pluralArguments[3], pluralArguments[1]);
|
|
break;
|
|
default:
|
|
result = pluralArguments[1];
|
|
}
|
|
return result ? stringTrim(result) : '';
|
|
}
|
|
// Array index
|
|
if (indexStart > -1) {
|
|
var arrayName = statement.substring(0, indexStart), ix = Number(statement.substring(indexStart + 1, indexEnd)), val;
|
|
arr = ctx[arrayName];
|
|
if (!isNaN(ix) && arr) {
|
|
if (ix < 0) {
|
|
val = arr[arr.length + ix];
|
|
// Handle negative overshoot
|
|
if (typeof val === 'undefined') {
|
|
val = arr[0];
|
|
}
|
|
}
|
|
else {
|
|
val = arr[ix];
|
|
// Handle positive overshoot
|
|
if (typeof val === 'undefined') {
|
|
val = arr[arr.length - 1];
|
|
}
|
|
}
|
|
}
|
|
return typeof val !== 'undefined' ? val : '';
|
|
}
|
|
// Standard substitution, delegate to format or similar
|
|
return '{' + statement + '}';
|
|
}
|
|
/**
|
|
* i18n formatting function. Extends Highcharts.format() functionality by also
|
|
* handling arrays and plural conditionals. Arrays can be indexed as follows:
|
|
*
|
|
* - Format: 'This is the first index: {myArray[0]}. The last: {myArray[-1]}.'
|
|
*
|
|
* - Context: { myArray: [0, 1, 2, 3, 4, 5] }
|
|
*
|
|
* - Result: 'This is the first index: 0. The last: 5.'
|
|
*
|
|
*
|
|
* They can also be iterated using the #each() function. This will repeat the
|
|
* contents of the bracket expression for each element. Example:
|
|
*
|
|
* - Format: 'List contains: {#each(myArray)cm }'
|
|
*
|
|
* - Context: { myArray: [0, 1, 2] }
|
|
*
|
|
* - Result: 'List contains: 0cm 1cm 2cm '
|
|
*
|
|
*
|
|
* The #each() function optionally takes a length parameter. If positive, this
|
|
* parameter specifies the max number of elements to iterate through. If
|
|
* negative, the function will subtract the number from the length of the array.
|
|
* Use this to stop iterating before the array ends. Example:
|
|
*
|
|
* - Format: 'List contains: {#each(myArray, -1) }and {myArray[-1]}.'
|
|
*
|
|
* - Context: { myArray: [0, 1, 2, 3] }
|
|
*
|
|
* - Result: 'List contains: 0, 1, 2, and 3.'
|
|
*
|
|
*
|
|
* Use the #plural() function to pick a string depending on whether or not a
|
|
* context object is 1. Arguments are #plural(obj, plural, singular). Example:
|
|
*
|
|
* - Format: 'Has {numPoints} {#plural(numPoints, points, point}.'
|
|
*
|
|
* - Context: { numPoints: 5 }
|
|
*
|
|
* - Result: 'Has 5 points.'
|
|
*
|
|
*
|
|
* Optionally there are additional parameters for dual and none: #plural(obj,
|
|
* plural, singular, dual, none). Example:
|
|
*
|
|
* - Format: 'Has {#plural(numPoints, many points, one point, two points,
|
|
* none}.'
|
|
*
|
|
* - Context: { numPoints: 2 }
|
|
*
|
|
* - Result: 'Has two points.'
|
|
*
|
|
*
|
|
* The dual or none parameters will take precedence if they are supplied.
|
|
*
|
|
* @requires modules/accessibility
|
|
*
|
|
* @function Highcharts.i18nFormat
|
|
*
|
|
* @param {string} formatString
|
|
* The string to format.
|
|
*
|
|
* @param {Highcharts.Dictionary<*>} context
|
|
* Context to apply to the format string.
|
|
*
|
|
* @param {Highcharts.Chart} chart
|
|
* A `Chart` instance with a time object and numberFormatter, passed on
|
|
* to format().
|
|
*
|
|
* @return {string}
|
|
* The formatted string.
|
|
*/
|
|
H.i18nFormat = function (formatString, context, chart) {
|
|
var getFirstBracketStatement = function (sourceStr, offset) {
|
|
var str = sourceStr.slice(offset || 0), startBracket = str.indexOf('{'), endBracket = str.indexOf('}');
|
|
if (startBracket > -1 && endBracket > startBracket) {
|
|
return {
|
|
statement: str.substring(startBracket + 1, endBracket),
|
|
begin: offset + startBracket + 1,
|
|
end: offset + endBracket
|
|
};
|
|
}
|
|
}, tokens = [], bracketRes, constRes, cursor = 0;
|
|
// Tokenize format string into bracket statements and constants
|
|
do {
|
|
bracketRes = getFirstBracketStatement(formatString, cursor);
|
|
constRes = formatString.substring(cursor, bracketRes && bracketRes.begin - 1);
|
|
// If we have constant content before this bracket statement, add it
|
|
if (constRes.length) {
|
|
tokens.push({
|
|
value: constRes,
|
|
type: 'constant'
|
|
});
|
|
}
|
|
// Add the bracket statement
|
|
if (bracketRes) {
|
|
tokens.push({
|
|
value: bracketRes.statement,
|
|
type: 'statement'
|
|
});
|
|
}
|
|
cursor = bracketRes ? bracketRes.end + 1 : cursor + 1;
|
|
} while (bracketRes);
|
|
// Perform the formatting. The formatArrayStatement function returns the
|
|
// statement in brackets if it is not an array statement, which means it
|
|
// gets picked up by format below.
|
|
tokens.forEach(function (token) {
|
|
if (token.type === 'statement') {
|
|
token.value = formatExtendedStatement(token.value, context);
|
|
}
|
|
});
|
|
// Join string back together and pass to format to pick up non-array
|
|
// statements.
|
|
return format(tokens.reduce(function (acc, cur) {
|
|
return acc + cur.value;
|
|
}, ''), context, chart);
|
|
};
|
|
/**
|
|
* Apply context to a format string from lang options of the chart.
|
|
*
|
|
* @requires modules/accessibility
|
|
*
|
|
* @function Highcharts.Chart#langFormat
|
|
*
|
|
* @param {string} langKey
|
|
* Key (using dot notation) into lang option structure.
|
|
*
|
|
* @param {Highcharts.Dictionary<*>} context
|
|
* Context to apply to the format string.
|
|
*
|
|
* @return {string}
|
|
* The formatted string.
|
|
*/
|
|
H.Chart.prototype.langFormat = function (langKey, context) {
|
|
var keys = langKey.split('.'), formatString = this.options.lang, i = 0;
|
|
for (; i < keys.length; ++i) {
|
|
formatString = formatString && formatString[keys[i]];
|
|
}
|
|
return typeof formatString === 'string' ?
|
|
H.i18nFormat(formatString, context, this) : '';
|
|
};
|