export utilities and fix multiple dates bugs

src/components/date-picker/util.js

@@ -134,3 +134,113 @@ export const formatDateLabels = (function() {
         };
     };
 })();
+
+// Parsers and Formaters
+export const DEFAULT_FORMATS = {
+    date: 'yyyy-MM-dd',
+    month: 'yyyy-MM',
+    year: 'yyyy',
+    datetime: 'yyyy-MM-dd HH:mm:ss',
+    time: 'HH:mm:ss',
+    timerange: 'HH:mm:ss',
+    daterange: 'yyyy-MM-dd',
+    datetimerange: 'yyyy-MM-dd HH:mm:ss'
+};
+
+const RANGE_SEPARATOR = ' - ';
+
+const DATE_FORMATTER = function(value, format) {
+    return formatDate(value, format);
+};
+const DATE_PARSER = function(text, format) {
+    return parseDate(text, format);
+};
+const RANGE_FORMATTER = function(value, format) {
+    if (Array.isArray(value) && value.length === 2) {
+        const start = value[0];
+        const end = value[1];
+
+        if (start && end) {
+            return formatDate(start, format) + RANGE_SEPARATOR + formatDate(end, format);
+        }
+    }
+    return '';
+};
+const RANGE_PARSER = function(text, format) {
+    const array = text.split(RANGE_SEPARATOR);
+    if (array.length === 2) {
+        const range1 = array[0];
+        const range2 = array[1];
+
+        return [parseDate(range1, format), parseDate(range2, format)];
+    }
+    return [];
+};
+
+export const TYPE_VALUE_RESOLVER_MAP = {
+    default: {
+        formatter(value) {
+            if (!value) return '';
+            return '' + value;
+        },
+        parser(text) {
+            if (text === undefined || text === '') return null;
+            return text;
+        }
+    },
+    date: {
+        formatter: DATE_FORMATTER,
+        parser: DATE_PARSER
+    },
+    datetime: {
+        formatter: DATE_FORMATTER,
+        parser: DATE_PARSER
+    },
+    daterange: {
+        formatter: RANGE_FORMATTER,
+        parser: RANGE_PARSER
+    },
+    datetimerange: {
+        formatter: RANGE_FORMATTER,
+        parser: RANGE_PARSER
+    },
+    timerange: {
+        formatter: RANGE_FORMATTER,
+        parser: RANGE_PARSER
+    },
+    time: {
+        formatter: DATE_FORMATTER,
+        parser: DATE_PARSER
+    },
+    month: {
+        formatter: DATE_FORMATTER,
+        parser: DATE_PARSER
+    },
+    year: {
+        formatter: DATE_FORMATTER,
+        parser: DATE_PARSER
+    },
+    multiple: {
+        formatter: (value, format) => {
+            console.log(value, format);
+            return value.filter(Boolean).map(date => formatDate(date, format)).join(',');
+        },
+        parser: (text, format) => text.split(',').map(string => parseDate(string.trim(), format))
+    },
+    number: {
+        formatter(value) {
+            if (!value) return '';
+            return '' + value;
+        },
+        parser(text) {
+            let result = Number(text);
+
+            if (!isNaN(text)) {
+                return result;
+            } else {
+                return null;
+            }
+        }
+    }
+};
+