feat(input) add support to for week

Add support to date filter for outputing week of year

Partially closes angular#757

Author: benlesh

src/ng/directive/input.js

@@ -12,7 +12,8 @@ var URL_REGEXP = /^(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\
 var EMAIL_REGEXP = /^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,6}$/;
 var NUMBER_REGEXP = /^\s*(\-|\+)?(\d+|(\d*(\.\d*)))\s*$/;
 var DATE_REGEXP = /^(\d{4})-(\d{2})-(\d{2})$/;
-var DATETIMELOCAL_REGEXP = /^(\d{4})-(\d\d)-(\d\d)T(\d\d):(\d\d):(\d\d)$/;
+var DATETIMELOCAL_REGEXP = /^(\d{4})-(\d\d)-(\d\d)T(\d\d):(\d\d)$/;
+var WEEK_REGEXP = /^(\d{4})-W(\d\d)$/;
 
 var inputType = {
 
@@ -164,7 +165,7 @@ var inputType = {
     * @description
     * HTML5 or text input with datetime validation and transformation. In browsers that do not yet support
     * the HTML5 date input, a text element will be used. The text must be entered in a valid ISO-8601
-    * local datetime format (yyyy-MM-ddTHH:mm:ss), for example: `2010-12-28T14:57:12`. Will also accept a valid ISO
+    * local datetime format (yyyy-MM-ddTHH:mm), for example: `2010-12-28T14:57`. Will also accept a valid ISO
     * datetime string or Date object as model input, but will always output a Date object to the model.
     *
     * @param {string} ngModel Assignable angular expression to data-bind to.
@@ -183,27 +184,27 @@ var inputType = {
     <doc:source>
     <script>
     function Ctrl($scope) {
-          $scope.value = '2010-12-28T14:57:12';
+          $scope.value = new Date(2010, 11, 28, 14, 57); // or '2010-12-28T14:57';
         }
     </script>
     <form name="myForm" ng-controller="Ctrl as dateCtrl">
-    Pick a date between in 2013:
-    <input type="date" name="input" ng-model="value"
-    placeholder="yyyy-MM-dd" min="2013-01-01T00:00:00" max="2013-12-31T00:00:00" required />
-    <span class="error" ng-show="myForm.input.$error.required">
-    Required!</span>
-    <span class="error" ng-show="myForm.input.$error.datetimelocal">
-    Not a valid date!</span>
-    <tt>value = {{value}}</tt><br/>
-    <tt>myForm.input.$valid = {{myForm.input.$valid}}</tt><br/>
-    <tt>myForm.input.$error = {{myForm.input.$error}}</tt><br/>
-    <tt>myForm.$valid = {{myForm.$valid}}</tt><br/>
-    <tt>myForm.$error.required = {{!!myForm.$error.required}}</tt><br/>
+        Pick a date between in 2013:
+        <input type="datetime-local" name="input" ng-model="value"
+            placeholder="yyyy-MM-ddTHH:mm" min="2001-01-01T00:00" max="2013-12-31T00:00" required />
+        <span class="error" ng-show="myForm.input.$error.required">
+            Required!</span>
+        <span class="error" ng-show="myForm.input.$error.datetimelocal">
+            Not a valid date!</span>
+        <tt>value = {{value}}</tt><br/>
+        <tt>myForm.input.$valid = {{myForm.input.$valid}}</tt><br/>
+        <tt>myForm.input.$error = {{myForm.input.$error}}</tt><br/>
+        <tt>myForm.$valid = {{myForm.$valid}}</tt><br/>
+        <tt>myForm.$error.required = {{!!myForm.$error.required}}</tt><br/>
     </form>
     </doc:source>
     <doc:scenario>
     it('should initialize to model', function() {
-          expect(binding('value')).toEqual('2010-12-28T14:57:12');
+          expect(binding('value')).toEqual('2010-12-28T14:57');
           expect(binding('myForm.input.$valid')).toEqual('true');
         });
 
@@ -214,14 +215,81 @@ var inputType = {
         });
 
     it('should be invalid if over max', function() {
-          input('value').enter('2015-01-01T23:59:59');
+          input('value').enter('2015-01-01T23:59');
           expect(binding('value')).toEqual('');
           expect(binding('myForm.input.$valid')).toEqual('false');
         });
     </doc:scenario>
     </doc:example>
     */
   'datetime-local': dateTimeLocalInputType,
+
+   /**
+    * @ngdoc inputType
+    * @name ng.directive:input.week
+    *
+    * @description
+    * HTML5 or text input with week-of-the-year validation and transformation to Date. In browsers that do not yet support
+    * the HTML5 week input, a text element will be used. The text must be entered in a valid ISO-8601
+    * week format (yyyy-W##), for example: `2013-W02`. Will also accept a valid ISO
+    * week string or Date object as model input, but will always output a Date object to the model.
+    *
+    * @param {string} ngModel Assignable angular expression to data-bind to.
+    * @param {string=} name Property name of the form under which the control is published.
+    * @param {string=} min Sets the `min` validation error key if the value entered is less than `min`.
+    * @param {string=} max Sets the `max` validation error key if the value entered is greater than `max`.
+    * @param {string=} required Sets `required` validation error key if the value is not entered.
+    * @param {string=} ngRequired Adds `required` attribute and `required` validation constraint to
+    *    the element when the ngRequired expression evaluates to true. Use `ngRequired` instead of
+    *    `required` when you want to data-bind to the `required` attribute.
+    * @param {string=} ngChange Angular expression to be executed when input changes due to user
+    *    interaction with the input element.
+    *
+    * @example
+    <doc:example>
+    <doc:source>
+    <script>
+    function Ctrl($scope) {
+          $scope.value = '2013-W01';
+        }
+    </script>
+    <form name="myForm" ng-controller="Ctrl as dateCtrl">
+        Pick a date between in 2013:
+        <input type="week" name="input" ng-model="value"
+            placeholder="YYYY-W##" min="2012-W32" max="2013-W52" required />
+        <span class="error" ng-show="myForm.input.$error.required">
+            Required!</span>
+        <span class="error" ng-show="myForm.input.$error.week">
+            Not a valid date!</span>
+        <tt>value = {{value}}</tt><br/>
+        <tt>myForm.input.$valid = {{myForm.input.$valid}}</tt><br/>
+        <tt>myForm.input.$error = {{myForm.input.$error}}</tt><br/>
+        <tt>myForm.$valid = {{myForm.$valid}}</tt><br/>
+        <tt>myForm.$error.required = {{!!myForm.$error.required}}</tt><br/>
+    </form>
+    </doc:source>
+    <doc:scenario>
+    it('should initialize to model', function() {
+          expect(binding('value')).toEqual('2013-W01');
+          expect(binding('myForm.input.$valid')).toEqual('true');
+        });
+
+    it('should be invalid if empty', function() {
+          input('value').enter('');
+          expect(binding('value')).toEqual('');
+          expect(binding('myForm.input.$valid')).toEqual('false');
+        });
+
+    it('should be invalid if over max', function() {
+          input('value').enter('2015-W01');
+          expect(binding('value')).toEqual('');
+          expect(binding('myForm.input.$valid')).toEqual('false');
+        });
+    </doc:scenario>
+    </doc:example>
+    */
+  'week': weekInputType,
+   
   /**
    * @ngdoc inputType
    * @name ng.directive:input.number
@@ -669,6 +737,118 @@ function textInputType(scope, element, attr, ctrl, $sniffer, $browser) {
   }
 }
 
+
+function weekInputType(scope, element, attr, ctrl, $sniffer, $browser, $filter) {
+   textInputType(scope, element, attr, ctrl, $sniffer, $browser);
+
+   ctrl.$parsers.push(function(value) {
+      if(ctrl.$isEmpty(value)) {
+         ctrl.$setValidity('week', true);
+         return value;
+      }
+
+      if(WEEK_REGEXP.test(value)) {
+         ctrl.$setValidity('week', true);
+         return new Date(getTime(value).time);
+      }
+
+      ctrl.$setValidity('week', false);
+      return undefined;
+   });
+
+   ctrl.$formatters.push(function(value) {
+      if(isDate(value)) {
+         return $filter('date')(value, 'yyyy-Www');
+      }
+      return ctrl.$isEmpty(value) ? '' : ''+value;
+   });
+
+   if(attr.min) {
+      var minValidator = function(value) {
+         var valTime = getTime(value),
+            minTime = getTime(attr.min);
+
+         var valid = ctrl.$isEmpty(value) ||
+            valTime.time >= minTime.time;
+
+         ctrl.$setValidity('min', valid);
+         return valid ? value : undefined;
+      };
+
+      ctrl.$parsers.push(minValidator);
+      ctrl.$formatters.push(minValidator);
+   }
+
+   if(attr.max) {
+      var maxValidator = function(value) {
+         var valTime = getTime(value),
+            maxTime = getTime(attr.max);
+
+         var valid = ctrl.$isEmpty(value) ||
+            valTime.time <= maxTime.time;
+
+         ctrl.$setValidity('max', valid);
+         return valid ? value : undefined;
+      };
+
+      ctrl.$parsers.push(maxValidator);
+      ctrl.$formatters.push(maxValidator);
+   }
+
+   function getFirstThursday(year) {
+      var d = 1, date;
+      while(true) {
+         date = new Date(year, 0, d++);
+         if(date.getDay() === 4) {
+            return date;
+         }
+      }
+   }
+
+   function getThisThursday(date) {
+      return new Date(date.getFullYear(), date.getMonth(), date.getDate() + (4 - date.getDay()));
+   }
+
+   var MILLISECONDS_PER_WEEK = 6.048e8;
+
+   function getWeek(date) {
+      var firstThurs = getFirstThursday(date.getFullYear()),
+        thisThurs = getThisThursday(date),
+        diff = +thisThurs - +firstThurs;
+
+      return 1 + Math.round(diff / MILLISECONDS_PER_WEEK);
+   }
+
+   function getTime(isoWeek) {
+      if(isDate(isoWeek)) {
+         return {
+            year: isoWeek.getFullYear(),
+            week: getWeek(isoWeek),
+            time: +isoWeek
+         };
+      }
+
+      if(isString(isoWeek)) {
+         WEEK_REGEXP.lastIndex = 0;
+         var parts = WEEK_REGEXP.exec(isoWeek);
+         if(parts) {
+            var year = +parts[1],
+               week = +parts[2],
+               firstThurs = getFirstThursday(year),
+               addDays = (week - 1) * 7;
+
+            return {
+               time: +new Date(year, 0, firstThurs.getDate() + addDays),
+               week: week,
+               year: year
+            };
+         }
+      }
+
+      return NaN;
+   }
+}
+
 function dateTimeLocalInputType(scope, element, attr, ctrl, $sniffer, $browser, $filter) {
    textInputType(scope, element, attr, ctrl, $sniffer, $browser);
 
@@ -689,7 +869,7 @@ function dateTimeLocalInputType(scope, element, attr, ctrl, $sniffer, $browser,
 
    ctrl.$formatters.push(function(value) {
       if(isDate(value)) {
-         return $filter('date')(value, 'yyyy-MM-ddTHH:mm:ss');
+         return $filter('date')(value, 'yyyy-MM-ddTHH:mm');
       }
       return ctrl.$isEmpty(value) ? '' : '' + value;
    });
@@ -730,10 +910,9 @@ function dateTimeLocalInputType(scope, element, attr, ctrl, $sniffer, $browser,
             MM = +parts[2] - 1,
             dd = +parts[3],
             HH = +parts[4],
-            mm = +parts[5],
-            ss = +parts[6];
+            mm = +parts[5];
 
-         return +new Date(yyyy, MM, dd, HH, mm, ss);
+         return +new Date(yyyy, MM, dd, HH, mm);
       }
 
       return NaN;

src/ng/filter/filters.js

@@ -228,6 +228,35 @@ function timeZoneGetter(date) {
   return paddedZone;
 }
 
+function getFirstThursday(year) {
+   var d = 1,
+      date = new Date(year, 0, d);
+   while(date.getDay() !== 4) {
+      d++;
+      date = new Date(year, 0, d);
+   }
+   return date;
+}
+
+function getThursdayThisWeek(date) {
+   var day = date.getDay(),
+      d = date.getDate();
+
+   return new Date(date.getFullYear(), date.getMonth(), d + (4 - day));
+}
+
+function weekGetter(size) {
+   return function(date) {
+      var firstThurs = getFirstThursday(date.getFullYear()),
+         thisThurs = getThursdayThisWeek(date);
+
+      var diff = +thisThurs - +firstThurs,
+         result = 1 + Math.round(diff / 6.048e8);
+
+      return padNumber(result, size);
+   };
+}
+
 function ampmGetter(date, formats) {
   return date.getHours() < 12 ? formats.AMPMS[0] : formats.AMPMS[1];
 }
@@ -256,10 +285,12 @@ var DATE_FORMATS = {
   EEEE: dateStrGetter('Day'),
    EEE: dateStrGetter('Day', true),
      a: ampmGetter,
-     Z: timeZoneGetter
+     Z: timeZoneGetter,
+    ww: weekGetter(2),
+     w: weekGetter(1)
 };
 
-var DATE_FORMATS_SPLIT = /((?:[^yMdHhmsaZE']+)|(?:'(?:[^']|'')*')|(?:E+|y+|M+|d+|H+|h+|m+|s+|a|Z))(.*)/,
+var DATE_FORMATS_SPLIT = /((?:[^yMdHhmsaZEw']+)|(?:'(?:[^']|'')*')|(?:E+|y+|M+|d+|H+|h+|m+|s+|a|Z|w+))(.*)/,
     NUMBER_STRING = /^\-?\d+$/;
 
 /**
@@ -294,6 +325,8 @@ var DATE_FORMATS_SPLIT = /((?:[^yMdHhmsaZE']+)|(?:'(?:[^']|'')*')|(?:E+|y+|M+|d+
  *   * `'.sss' or ',sss'`: Millisecond in second, padded (000-999)
  *   * `'a'`: am/pm marker
  *   * `'Z'`: 4 digit (+sign) representation of the timezone offset (-1200-+1200)
+ *   * `'ww'`: ISO-8601 week of year (00-53)
+ *   * `'w'`: ISO-8601 week of year (0-53)
  *
  *   `format` string can also be one of the following predefined
  *   {@link guide/i18n localizable formats}: