@uiowa/date-range-picker
Version:
An Angular library for date range picker.
156 lines • 13.7 kB
JavaScript
/**
* DateRange Type represents start date and end date.
*/
export class DateRange {
/**
* Examples:
```typescript
const d1 = new DateRange();
const d2 = new DateRange(new Date(), new Date(2018, 9, 10));
```
* @param start [Optional] Start Date. Default: null.
* @param end [Optional] End Date. Default: null
*/
constructor(start = null, end = null) {
this.start = start;
this.end = end;
}
/**
* Examples:
```typescript
const d1 = DateRange.nextDays(7);
// a date range of next week since today
```
* @param n Number of days after today.
*/
static nextDays(n) {
const start = new Date();
const end = new Date();
end.setDate(end.getDate() + n);
return new DateRange(start, end);
}
/**
* Examples:
```typescript
const d1 = DateRange.lastDays(7);
// a date range of a week before today
```
* @param n Number of days before today.
*/
static lastDays(n) {
const start = new Date();
start.setDate(start.getDate() - n);
const end = new Date();
return new DateRange(start, end);
}
/**
* Examples:
```typescript
const d1 = DateRange.nextTwoWeeks();
// a date range of next two weeks since today
```
*/
static nextTwoWeeks() {
return DateRange.nextDays(14);
}
/**
* Examples:
```typescript
const d1 = DateRange.nextMonth();
// a date range of next month since today
```
*/
static nextMonth() {
const start = new Date();
const end = new Date();
end.setMonth(end.getMonth() + 1);
return new DateRange(start, end);
}
/**
* Examples:
```typescript
const d1 = DateRange.lastMonth();
// a date range of last month till today
```
*/
static lastMonth() {
const start = new Date();
const end = new Date();
start.setMonth(start.getMonth() - 1);
return new DateRange(start, end);
}
/**
* Examples:
```typescript
const d1 = DateRange.create({});
```
* @param start start date of range you're creating
* @param end end date of range you're creating
*/
static create(start, end) {
let startDate = null;
let endDate = null;
if (DateRange.isValidDate(start)) {
startDate = new Date(start);
}
if (DateRange.isValidDate(end)) {
endDate = new Date(end);
}
return new DateRange(startDate, endDate);
}
/**
* Examples:
```typescript
const isValid = DateRange.isValidDate(new Date());
```
* @param value date you want to verify as date
*/
static isValidDate(value) {
if (!value) {
return false;
}
switch (typeof value) {
case 'number':
return true;
case 'string':
return !isNaN(Date.parse(value));
default:
if (value instanceof Date) {
return !isNaN(value.getTime());
}
return false;
}
}
/**
* Examples:
```typescript
const a = new DateRange();
const isEqual = a.equals(new DateRange());
```
* @param dateRange another DateRange object
*/
equals(dateRange) {
if (!dateRange) {
return false;
}
return (DateRange.dateEqual(dateRange.start, this.start) &&
DateRange.dateEqual(dateRange.end, this.end));
}
/**
*
* @param date1 a Date object or NULL
* @param date2 a Date object or NULL
*/
static dateEqual(date1, date2) {
if (date1 === null) {
return date2 === null;
}
else if (date2 === null) {
return false;
}
const d1 = date1 instanceof Date ? date1 : new Date(date1);
const d2 = date2 instanceof Date ? date2 : new Date(date2);
return d1.toLocaleDateString() === d2.toLocaleDateString();
}
}
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Default: null.\r\n   * @param end [Optional] End Date. Default: null\r\n   */\r\n  constructor(\r\n    public start: Date | null = null,\r\n    public end: Date | null = null\r\n  ) {}\r\n\r\n  /**\r\n   * Examples:\r\n ```typescript\r\nconst d1 = DateRange.nextDays(7);\r\n// a date range of next week since today\r\n ```\r\n   * @param n Number of days after today.\r\n   */\r\n  static nextDays(n: number): DateRange {\r\n    const start = new Date();\r\n    const end = new Date();\r\n    end.setDate(end.getDate() + n);\r\n    return new DateRange(start, end);\r\n  }\r\n\r\n  /**\r\n   * Examples:\r\n ```typescript\r\nconst d1 = DateRange.lastDays(7);\r\n// a date range of a week before today\r\n ```\r\n   * @param n Number of days before today.\r\n   */\r\n  static lastDays(n: number): DateRange {\r\n    const start = new Date();\r\n    start.setDate(start.getDate() - n);\r\n    const end = new Date();\r\n    return new DateRange(start, end);\r\n  }\r\n\r\n  /**\r\n   * Examples:\r\n ```typescript\r\nconst d1 = DateRange.nextTwoWeeks();\r\n// a date range of next two weeks since today\r\n ```\r\n   */\r\n  static nextTwoWeeks(): DateRange {\r\n    return DateRange.nextDays(14);\r\n  }\r\n\r\n  /**\r\n   * Examples:\r\n ```typescript\r\nconst d1 = DateRange.nextMonth();\r\n// a date range of next month since today\r\n ```\r\n   */\r\n  static nextMonth(): DateRange {\r\n    const start = new Date();\r\n    const end = new Date();\r\n    end.setMonth(end.getMonth() + 1);\r\n    return new DateRange(start, end);\r\n  }\r\n\r\n  /**\r\n   * Examples:\r\n ```typescript\r\nconst d1 = DateRange.lastMonth();\r\n// a date range of last month till today\r\n ```\r\n   */\r\n  static lastMonth(): DateRange {\r\n    const start = new Date();\r\n    const end = new Date();\r\n    start.setMonth(start.getMonth() - 1);\r\n    return new DateRange(start, end);\r\n  }\r\n\r\n  /**\r\n   * Examples:\r\n ```typescript\r\nconst d1 = DateRange.create({});\r\n ```\r\n   * @param start start date of range you're creating\r\n   * @param end end date of range you're creating\r\n   */\r\n  static create(start: any, end: any): DateRange {\r\n    let startDate = null;\r\n    let endDate = null;\r\n    if (DateRange.isValidDate(start)) {\r\n      startDate = new Date(start);\r\n    }\r\n    if (DateRange.isValidDate(end)) {\r\n      endDate = new Date(end);\r\n    }\r\n    return new DateRange(startDate, endDate);\r\n  }\r\n\r\n  /**\r\n   * Examples:\r\n ```typescript\r\nconst isValid = DateRange.isValidDate(new Date());\r\n ```\r\n   * @param value date you want to verify as date\r\n   */\r\n  static isValidDate(value: any): boolean {\r\n    if (!value) {\r\n      return false;\r\n    }\r\n\r\n    switch (typeof value) {\r\n      case 'number':\r\n        return true;\r\n      case 'string':\r\n        return !isNaN(Date.parse(value));\r\n      default:\r\n        if (value instanceof Date) {\r\n          return !isNaN(value.getTime());\r\n        }\r\n        return false;\r\n    }\r\n  }\r\n\r\n  /**\r\n   * Examples:\r\n ```typescript\r\nconst a = new DateRange();\r\nconst isEqual = a.equals(new DateRange());\r\n ```\r\n   * @param dateRange another DateRange object\r\n   */\r\n  equals(dateRange: DateRange): boolean {\r\n    if (!dateRange) {\r\n      return false;\r\n    }\r\n    return (\r\n      DateRange.dateEqual(dateRange.start, this.start) &&\r\n      DateRange.dateEqual(dateRange.end, this.end)\r\n    );\r\n  }\r\n\r\n  /**\r\n   *\r\n   * @param date1 a Date object or NULL\r\n   * @param date2 a Date object or NULL\r\n   */\r\n  static dateEqual(date1: Date | null, date2: Date | null): boolean {\r\n    if (date1 === null) {\r\n      return date2 === null;\r\n    } else if (date2 === null) {\r\n      return false;\r\n    }\r\n\r\n    const d1 = date1 instanceof Date ? date1 : new Date(date1);\r\n    const d2 = date2 instanceof Date ? date2 : new Date(date2);\r\n    return d1.toLocaleDateString() === d2.toLocaleDateString();\r\n  }\r\n}\r\n"]}