Otaku-Projects / AngularJS-CRUD-PHP

 * (c) 2010-2017 Google, Inc. http://angularjs.org

 * License: MIT

 */

(function(window, angular) {'use strict';

var forEach;

var isArray;

var isString;

var jqLite;

/**

 * @ngdoc module

 * @name ngMessages

 * @description

 *

 * The `ngMessages` module provides enhanced support for displaying messages within templates

 * (typically within forms or when rendering message objects that return key/value data).

 * Instead of relying on JavaScript code and/or complex ng-if statements within your form template to

 * show and hide error messages specific to the state of an input field, the `ngMessages` and

 * `ngMessage` directives are designed to handle the complexity, inheritance and priority

 * sequencing based on the order of how the messages are defined in the template.

 *

 * Currently, the ngMessages module only contains the code for the `ngMessages`, `ngMessagesInclude`

 * `ngMessage` and `ngMessageExp` directives.

 *

 * # Usage

 * The `ngMessages` directive allows keys in a key/value collection to be associated with a child element

 * (or 'message') that will show or hide based on the truthiness of that key's value in the collection. A common use

 * case for `ngMessages` is to display error messages for inputs using the `$error` object exposed by the

 * {@link ngModel ngModel} directive.

 *

 * The child elements of the `ngMessages` directive are matched to the collection keys by a `ngMessage` or

 * `ngMessageExp` directive. The value of these attributes must match a key in the collection that is provided by

 * the `ngMessages` directive.

 *

 * Consider the following example, which illustrates a typical use case of `ngMessages`. Within the form `myForm` we

 * have a text input named `myField` which is bound to the scope variable `field` using the {@link ngModel ngModel}

 * directive.

 *

 * The `myField` field is a required input of type `email` with a maximum length of 15 characters.

 *

 * ```html

 * <form name="myForm">

 *   <label>

 *     Enter text:

 *     <input type="email" ng-model="field" name="myField" required maxlength="15" />

 *   </label>

 *   <div ng-messages="myForm.myField.$error" role="alert">

 *     <div ng-message="required">Please enter a value for this field.</div>

 *     <div ng-message="email">This field must be a valid email address.</div>

 *     <div ng-message="maxlength">This field can be at most 15 characters long.</div>

 *   </div>

 * </form>

 * ```

 *

 * In order to show error messages corresponding to `myField` we first create an element with an `ngMessages` attribute

 * set to the `$error` object owned by the `myField` input in our `myForm` form.

 *

 * Within this element we then create separate elements for each of the possible errors that `myField` could have.

 * The `ngMessage` attribute is used to declare which element(s) will appear for which error - for example,

 * setting `ng-message="required"` specifies that this particular element should be displayed when there

 * is no value present for the required field `myField` (because the key `required` will be `true` in the object

 * `myForm.myField.$error`).

 *

 * ### Message order

 *

 * By default, `ngMessages` will only display one message for a particular key/value collection at any time. If more

 * than one message (or error) key is currently true, then which message is shown is determined by the order of messages

 * in the HTML template code (messages declared first are prioritised). This mechanism means the developer does not have

 * to prioritize messages using custom JavaScript code.

 *

 * Given the following error object for our example (which informs us that the field `myField` currently has both the

 * `required` and `email` errors):

 *

 * ```javascript

 * <!-- keep in mind that ngModel automatically sets these error flags -->

 * myField.$error = { required : true, email: true, maxlength: false };

 * ```

 * The `required` message will be displayed to the user since it appears before the `email` message in the DOM.

 * Once the user types a single character, the `required` message will disappear (since the field now has a value)

 * but the `email` message will be visible because it is still applicable.

 *

 * ### Displaying multiple messages at the same time

 *

 * While `ngMessages` will by default only display one error element at a time, the `ng-messages-multiple` attribute can

 * be applied to the `ngMessages` container element to cause it to display all applicable error messages at once:

 *

 * ```html

 * <!-- attribute-style usage -->

 * <div ng-messages="myForm.myField.$error" ng-messages-multiple>...</div>

 *

 * <!-- element-style usage -->

 * <ng-messages for="myForm.myField.$error" multiple>...</ng-messages>

 * ```

 *

 * ## Reusing and Overriding Messages

 * In addition to prioritization, ngMessages also allows for including messages from a remote or an inline

 * template. This allows for generic collection of messages to be reused across multiple parts of an

 * application.

 *

 * ```html

 * <script type="text/ng-template" id="error-messages">

 *   <div ng-message="required">This field is required</div>

 *   <div ng-message="minlength">This field is too short</div>

 * </script>

 *

 * <div ng-messages="myForm.myField.$error" role="alert">

 *   <div ng-messages-include="error-messages"></div>

 * </div>

 * ```

 *

 * However, including generic messages may not be useful enough to match all input fields, therefore,

 * `ngMessages` provides the ability to override messages defined in the remote template by redefining

 * them within the directive container.

 *

 * ```html

 * <!-- a generic template of error messages known as "my-custom-messages" -->

 * <script type="text/ng-template" id="my-custom-messages">

 *   <div ng-message="required">This field is required</div>

 *   <div ng-message="minlength">This field is too short</div>

 * </script>

 *

 * <form name="myForm">

 *   <label>

 *     Email address

 *     <input type="email"

 *            id="email"

 *            name="myEmail"

 *            ng-model="email"

 *            minlength="5"

 *            required />

 *   </label>

 *   <!-- any ng-message elements that appear BEFORE the ng-messages-include will

 *        override the messages present in the ng-messages-include template -->

 *   <div ng-messages="myForm.myEmail.$error" role="alert">

 *     <!-- this required message has overridden the template message -->

 *     <div ng-message="required">You did not enter your email address</div>

 *

 *     <!-- this is a brand new message and will appear last in the prioritization -->

 *     <div ng-message="email">Your email address is invalid</div>

 *

 *     <!-- and here are the generic error messages -->

 *     <div ng-messages-include="my-custom-messages"></div>

 *   </div>

 * </form>

 * ```

 *

 * In the example HTML code above the message that is set on required will override the corresponding

 * required message defined within the remote template. Therefore, with particular input fields (such

 * email addresses, date fields, autocomplete inputs, etc...), specialized error messages can be applied

 * while more generic messages can be used to handle other, more general input errors.

 *

 * ## Dynamic Messaging

 * ngMessages also supports using expressions to dynamically change key values. Using arrays and

 * repeaters to list messages is also supported. This means that the code below will be able to

 * fully adapt itself and display the appropriate message when any of the expression data changes:

 *

 * ```html

 * <form name="myForm">

 *   <label>

 *     Email address

 *     <input type="email"

 *            name="myEmail"

 *            ng-model="email"

 *            minlength="5"

 *            required />

 *   </label>

 *   <div ng-messages="myForm.myEmail.$error" role="alert">

 *     <div ng-message="required">You did not enter your email address</div>

 *     <div ng-repeat="errorMessage in errorMessages">

 *       <!-- use ng-message-exp for a message whose key is given by an expression -->

 *       <div ng-message-exp="errorMessage.type">{{ errorMessage.text }}</div>

 *     </div>

 *   </div>

 * </form>

 * ```

 *

 * The `errorMessage.type` expression can be a string value or it can be an array so

 * that multiple errors can be associated with a single error message:

 *

 * ```html

 *   <label>

 *     Email address

 *     <input type="email"

 *            ng-model="data.email"

 *            name="myEmail"

 *            ng-minlength="5"

 *            ng-maxlength="100"

 *            required />

 *   </label>

 *   <div ng-messages="myForm.myEmail.$error" role="alert">

 *     <div ng-message-exp="'required'">You did not enter your email address</div>

 *     <div ng-message-exp="['minlength', 'maxlength']">

 *       Your email must be between 5 and 100 characters long

 *     </div>

 *   </div>

 * ```

 *

 * Feel free to use other structural directives such as ng-if and ng-switch to further control

 * what messages are active and when. Be careful, if you place ng-message on the same element

 * as these structural directives, Angular may not be able to determine if a message is active

 * or not. Therefore it is best to place the ng-message on a child element of the structural

 * directive.

 *

 * ```html

 * <div ng-messages="myForm.myEmail.$error" role="alert">

 *   <div ng-if="showRequiredError">

 *     <div ng-message="required">Please enter something</div>

 *   </div>

 * </div>

 * ```

 *

 * ## Animations

 * If the `ngAnimate` module is active within the application then the `ngMessages`, `ngMessage` and

 * `ngMessageExp` directives will trigger animations whenever any messages are added and removed from

 * the DOM by the `ngMessages` directive.

 *

 * Whenever the `ngMessages` directive contains one or more visible messages then the `.ng-active` CSS

 * class will be added to the element. The `.ng-inactive` CSS class will be applied when there are no

 * messages present. Therefore, CSS transitions and keyframes as well as JavaScript animations can

 * hook into the animations whenever these classes are added/removed.

 *

 * Let's say that our HTML code for our messages container looks like so:

 *

 * ```html

 * <div ng-messages="myMessages" class="my-messages" role="alert">

 *   <div ng-message="alert" class="some-message">...</div>

 *   <div ng-message="fail" class="some-message">...</div>

 * </div>

 * ```

 *

 * Then the CSS animation code for the message container looks like so:

 *

 * ```css

 * .my-messages {

 *   transition:1s linear all;

 * }

 * .my-messages.ng-active {

 *   // messages are visible

 * }

 * .my-messages.ng-inactive {

 *   // messages are hidden

 * }

 * ```

 *

 * Whenever an inner message is attached (becomes visible) or removed (becomes hidden) then the enter

 * and leave animation is triggered for each particular element bound to the `ngMessage` directive.

 *

 * Therefore, the CSS code for the inner messages looks like so:

 *

 * ```css

 * .some-message {

 *   transition:1s linear all;

 * }

 *

 * .some-message.ng-enter {}

 * .some-message.ng-enter.ng-enter-active {}

 *

 * .some-message.ng-leave {}

 * .some-message.ng-leave.ng-leave-active {}

 * ```

 *

 * {@link ngAnimate Click here} to learn how to use JavaScript animations or to learn more about ngAnimate.

 */

angular.module('ngMessages', [], function initAngularHelpers() {

  // Access helpers from angular core.

  // Do it inside a `config` block to ensure `window.angular` is available.

  forEach = angular.forEach;

  isArray = angular.isArray;

  isString = angular.isString;

  jqLite = angular.element;

})

  .info({ angularVersion: '1.6.5' })

  /**

   * @ngdoc directive

   * @module ngMessages

   * @name ngMessages

   * @restrict AE

   *

   * @description

   * `ngMessages` is a directive that is designed to show and hide messages based on the state

   * of a key/value object that it listens on. The directive itself complements error message

   * reporting with the `ngModel` $error object (which stores a key/value state of validation errors).

   *

   * `ngMessages` manages the state of internal messages within its container element. The internal

   * messages use the `ngMessage` directive and will be inserted/removed from the page depending

   * on if they're present within the key/value object. By default, only one message will be displayed

   * at a time and this depends on the prioritization of the messages within the template. (This can

   * be changed by using the `ng-messages-multiple` or `multiple` attribute on the directive container.)

   *

   * A remote template can also be used to promote message reusability and messages can also be

   * overridden.

   *

   * {@link module:ngMessages Click here} to learn more about `ngMessages` and `ngMessage`.

   *

   * @usage

   * ```html

   * <!-- using attribute directives -->

   * <ANY ng-messages="expression" role="alert">

   *   <ANY ng-message="stringValue">...</ANY>

   *   <ANY ng-message="stringValue1, stringValue2, ...">...</ANY>

   *   <ANY ng-message-exp="expressionValue">...</ANY>

   * </ANY>

   *

   * <!-- or by using element directives -->

   * <ng-messages for="expression" role="alert">

   *   <ng-message when="stringValue">...</ng-message>

   *   <ng-message when="stringValue1, stringValue2, ...">...</ng-message>

   *   <ng-message when-exp="expressionValue">...</ng-message>

   * </ng-messages>

   * ```

   *

   * @param {string} ngMessages an angular expression evaluating to a key/value object

   *                 (this is typically the $error object on an ngModel instance).

   * @param {string=} ngMessagesMultiple|multiple when set, all messages will be displayed with true

   *

   * @example

   * <example name="ngMessages-directive" module="ngMessagesExample"

   *          deps="angular-messages.js"

   *          animations="true" fixBase="true">

   *   <file name="index.html">

   *     <form name="myForm">

   *       <label>

   *         Enter your name:

   *         <input type="text"

   *                name="myName"

   *                ng-model="name"

   *                ng-minlength="5"

   *                ng-maxlength="20"

   *                required />

   *       </label>

   *       <pre>myForm.myName.$error = {{ myForm.myName.$error | json }}</pre>

   *

   *       <div ng-messages="myForm.myName.$error" style="color:maroon" role="alert">

   *         <div ng-message="required">You did not enter a field</div>

   *         <div ng-message="minlength">Your field is too short</div>

   *         <div ng-message="maxlength">Your field is too long</div>

   *       </div>

   *     </form>

   *   </file>

   *   <file name="script.js">

   *     angular.module('ngMessagesExample', ['ngMessages']);

   *   </file>

   * </example>

   */

  .directive('ngMessages', ['$animate', function($animate) {

    var ACTIVE_CLASS = 'ng-active';

    var INACTIVE_CLASS = 'ng-inactive';

    return {

      require: 'ngMessages',

      restrict: 'AE',

      controller: ['$element', '$scope', '$attrs', function NgMessagesCtrl($element, $scope, $attrs) {

        var ctrl = this;

        var latestKey = 0;

        var nextAttachId = 0;

        this.getAttachId = function getAttachId() { return nextAttachId++; };

        var messages = this.messages = {};

        var renderLater, cachedCollection;

        this.render = function(collection) {

          collection = collection || {};

          renderLater = false;

          cachedCollection = collection;

          // this is true if the attribute is empty or if the attribute value is truthy

          var multiple = isAttrTruthy($scope, $attrs.ngMessagesMultiple) ||

                         isAttrTruthy($scope, $attrs.multiple);

          var unmatchedMessages = [];

          var matchedKeys = {};

          var messageItem = ctrl.head;

          var messageFound = false;

          var totalMessages = 0;

          // we use != instead of !== to allow for both undefined and null values

          while (messageItem != null) {

            totalMessages++;

            var messageCtrl = messageItem.message;

            var messageUsed = false;

            if (!messageFound) {

              forEach(collection, function(value, key) {

                if (!messageUsed && truthy(value) && messageCtrl.test(key)) {

                  // this is to prevent the same error name from showing up twice

                  if (matchedKeys[key]) return;

                  matchedKeys[key] = true;

                  messageUsed = true;

                  messageCtrl.attach();

                }

              });

            }

            if (messageUsed) {

              // unless we want to display multiple messages then we should

              // set a flag here to avoid displaying the next message in the list

              messageFound = !multiple;

            } else {

              unmatchedMessages.push(messageCtrl);

            }

            messageItem = messageItem.next;

          }

          forEach(unmatchedMessages, function(messageCtrl) {

            messageCtrl.detach();

          });

          if (unmatchedMessages.length !== totalMessages) {

            $animate.setClass($element, ACTIVE_CLASS, INACTIVE_CLASS);

          } else {

            $animate.setClass($element, INACTIVE_CLASS, ACTIVE_CLASS);

          }

        };

        $scope.$watchCollection($attrs.ngMessages || $attrs['for'], ctrl.render);

        // If the element is destroyed, proactively destroy all the currently visible messages

        $element.on('$destroy', function() {

          forEach(messages, function(item) {

            item.message.detach();

          });

        });

        this.reRender = function() {

          if (!renderLater) {

            renderLater = true;

            $scope.$evalAsync(function() {

              if (renderLater && cachedCollection) {

                ctrl.render(cachedCollection);

              }

            });

          }

        };

        this.register = function(comment, messageCtrl) {

          var nextKey = latestKey.toString();

          messages[nextKey] = {

            message: messageCtrl

          };

          insertMessageNode($element[0], comment, nextKey);

          comment.$$ngMessageNode = nextKey;

          latestKey++;

          ctrl.reRender();

        };

        this.deregister = function(comment) {

          var key = comment.$$ngMessageNode;

          delete comment.$$ngMessageNode;

          removeMessageNode($element[0], comment, key);

          delete messages[key];

          ctrl.reRender();

        };

        function findPreviousMessage(parent, comment) {

          var prevNode = comment;

          var parentLookup = [];

          while (prevNode && prevNode !== parent) {

            var prevKey = prevNode.$$ngMessageNode;

            if (prevKey && prevKey.length) {

              return messages[prevKey];

            }

            // dive deeper into the DOM and examine its children for any ngMessage

            // comments that may be in an element that appears deeper in the list

            if (prevNode.childNodes.length && parentLookup.indexOf(prevNode) === -1) {

              parentLookup.push(prevNode);

              prevNode = prevNode.childNodes[prevNode.childNodes.length - 1];

            } else if (prevNode.previousSibling) {

              prevNode = prevNode.previousSibling;

            } else {

              prevNode = prevNode.parentNode;

              parentLookup.push(prevNode);

            }

          }

        }

        function insertMessageNode(parent, comment, key) {

          var messageNode = messages[key];

          if (!ctrl.head) {

            ctrl.head = messageNode;

          } else {

            var match = findPreviousMessage(parent, comment);

            if (match) {

              messageNode.next = match.next;

              match.next = messageNode;

            } else {

              messageNode.next = ctrl.head;

              ctrl.head = messageNode;

            }

          }

        }

        function removeMessageNode(parent, comment, key) {

          var messageNode = messages[key];

          var match = findPreviousMessage(parent, comment);

          if (match) {

            match.next = messageNode.next;

          } else {

            ctrl.head = messageNode.next;

          }

        }

      }]

    };

    function isAttrTruthy(scope, attr) {

     return (isString(attr) && attr.length === 0) || //empty attribute

            truthy(scope.$eval(attr));

    }

    function truthy(val) {

      return isString(val) ? val.length : !!val;

    }

  }])

  /**

   * @ngdoc directive

   * @name ngMessagesInclude

   * @restrict AE

   * @scope

   *

   * @description

   * `ngMessagesInclude` is a directive with the purpose to import existing ngMessage template

   * code from a remote template and place the downloaded template code into the exact spot

   * that the ngMessagesInclude directive is placed within the ngMessages container. This allows

   * for a series of pre-defined messages to be reused and also allows for the developer to

   * determine what messages are overridden due to the placement of the ngMessagesInclude directive.

   *

   * @usage

   * ```html

   * <!-- using attribute directives -->

   * <ANY ng-messages="expression" role="alert">

   *   <ANY ng-messages-include="remoteTplString">...</ANY>

   * </ANY>

   *

   * <!-- or by using element directives -->

   * <ng-messages for="expression" role="alert">

   *   <ng-messages-include src="expressionValue1">...</ng-messages-include>

   * </ng-messages>

   * ```

   *

   * {@link module:ngMessages Click here} to learn more about `ngMessages` and `ngMessage`.

   *

   * @param {string} ngMessagesInclude|src a string value corresponding to the remote template.

   */

  .directive('ngMessagesInclude',

    ['$templateRequest', '$document', '$compile', function($templateRequest, $document, $compile) {

    return {

      restrict: 'AE',

      require: '^^ngMessages', // we only require this for validation sake

      link: function($scope, element, attrs) {

        var src = attrs.ngMessagesInclude || attrs.src;

        $templateRequest(src).then(function(html) {

          if ($scope.$$destroyed) return;

          if (isString(html) && !html.trim()) {

            // Empty template - nothing to compile

            replaceElementWithMarker(element, src);

          } else {

            // Non-empty template - compile and link

            $compile(html)($scope, function(contents) {

              element.after(contents);

              replaceElementWithMarker(element, src);

            });

          }

        });

      }

    };

    // Helpers

    function replaceElementWithMarker(element, src) {

      // A comment marker is placed for debugging purposes

      var comment = $compile.$$createComment ?

          $compile.$$createComment('ngMessagesInclude', src) :

          $document[0].createComment(' ngMessagesInclude: ' + src + ' ');

      var marker = jqLite(comment);

      element.after(marker);

      // Don't pollute the DOM anymore by keeping an empty directive element

      element.remove();

    }

  }])

  /**

   * @ngdoc directive

   * @name ngMessage

   * @restrict AE

   * @scope

   *

   * @description

   * `ngMessage` is a directive with the purpose to show and hide a particular message.

   * For `ngMessage` to operate, a parent `ngMessages` directive on a parent DOM element

   * must be situated since it determines which messages are visible based on the state

   * of the provided key/value map that `ngMessages` listens on.

   *

   * More information about using `ngMessage` can be found in the

   * {@link module:ngMessages `ngMessages` module documentation}.

   *

   * @usage

   * ```html

   * <!-- using attribute directives -->

   * <ANY ng-messages="expression" role="alert">

   *   <ANY ng-message="stringValue">...</ANY>

   *   <ANY ng-message="stringValue1, stringValue2, ...">...</ANY>

   * </ANY>

   *

   * <!-- or by using element directives -->

   * <ng-messages for="expression" role="alert">

   *   <ng-message when="stringValue">...</ng-message>

   *   <ng-message when="stringValue1, stringValue2, ...">...</ng-message>

   * </ng-messages>

   * ```

   *

   * @param {expression} ngMessage|when a string value corresponding to the message key.

   */

  .directive('ngMessage', ngMessageDirectiveFactory())

  /**

   * @ngdoc directive

   * @name ngMessageExp

   * @restrict AE

   * @priority 1

   * @scope

   *

   * @description

   * `ngMessageExp` is the same as {@link directive:ngMessage `ngMessage`}, but instead of a static

   * value, it accepts an expression to be evaluated for the message key.

   *

   * @usage

   * ```html

   * <!-- using attribute directives -->

   * <ANY ng-messages="expression">

   *   <ANY ng-message-exp="expressionValue">...</ANY>

   * </ANY>

   *

   * <!-- or by using element directives -->

   * <ng-messages for="expression">

   *   <ng-message when-exp="expressionValue">...</ng-message>

   * </ng-messages>

   * ```

   *

   * {@link module:ngMessages Click here} to learn more about `ngMessages` and `ngMessage`.

   *

   * @param {expression} ngMessageExp|whenExp an expression value corresponding to the message key.

   */

  .directive('ngMessageExp', ngMessageDirectiveFactory());

function ngMessageDirectiveFactory() {

  return ['$animate', function($animate) {

    return {

      restrict: 'AE',

      transclude: 'element',

      priority: 1, // must run before ngBind, otherwise the text is set on the comment

      terminal: true,

      require: '^^ngMessages',

      link: function(scope, element, attrs, ngMessagesCtrl, $transclude) {

        var commentNode = element[0];

        var records;

        var staticExp = attrs.ngMessage || attrs.when;

        var dynamicExp = attrs.ngMessageExp || attrs.whenExp;

        var assignRecords = function(items) {

          records = items

              ? (isArray(items)

                  ? items

                  : items.split(/[\s,]+/))

              : null;

          ngMessagesCtrl.reRender();

        };

        if (dynamicExp) {

          assignRecords(scope.$eval(dynamicExp));

          scope.$watchCollection(dynamicExp, assignRecords);

        } else {

          assignRecords(staticExp);

        }

        var currentElement, messageCtrl;

        ngMessagesCtrl.register(commentNode, messageCtrl = {

          test: function(name) {

            return contains(records, name);

          },

          attach: function() {

            if (!currentElement) {

              $transclude(function(elm, newScope) {

                $animate.enter(elm, null, element);

                currentElement = elm;

                // Each time we attach this node to a message we get a new id that we can match

                // when we are destroying the node later.

                var $$attachId = currentElement.$$attachId = ngMessagesCtrl.getAttachId();

                // in the event that the element or a parent element is destroyed

                // by another structural directive then it's time

                // to deregister the message from the controller

                currentElement.on('$destroy', function() {

                  if (currentElement && currentElement.$$attachId === $$attachId) {

                    ngMessagesCtrl.deregister(commentNode);

                    messageCtrl.detach();

                  }

                  newScope.$destroy();

                });

              });

            }

          },

          detach: function() {

            if (currentElement) {

              var elm = currentElement;

              currentElement = null;

              $animate.leave(elm);

            }

          }

        });

      }

    };

  }];

  function contains(collection, key) {

    if (collection) {

      return isArray(collection)

          ? collection.indexOf(key) >= 0

          : collection.hasOwnProperty(key);

    }

  }

}

})(window, window.angular);

 * (c) 2010-2017 Google, Inc. http://angularjs.org

 * License: MIT

 */

(function(window, angular) {'use strict';

var forEach;

var isArray;

var isString;

var jqLite;

/**

 * @ngdoc module

 * @name ngMessages

 * @description

 *

 * The `ngMessages` module provides enhanced support for displaying messages within templates

 * (typically within forms or when rendering message objects that return key/value data).

 * Instead of relying on JavaScript code and/or complex ng-if statements within your form template to

 * show and hide error messages specific to the state of an input field, the `ngMessages` and

 * `ngMessage` directives are designed to handle the complexity, inheritance and priority

 * sequencing based on the order of how the messages are defined in the template.

 *

 * Currently, the ngMessages module only contains the code for the `ngMessages`, `ngMessagesInclude`

 * `ngMessage` and `ngMessageExp` directives.

 *

 * # Usage

 * The `ngMessages` directive allows keys in a key/value collection to be associated with a child element

 * (or 'message') that will show or hide based on the truthiness of that key's value in the collection. A common use

 * case for `ngMessages` is to display error messages for inputs using the `$error` object exposed by the

 * {@link ngModel ngModel} directive.

 *

 * The child elements of the `ngMessages` directive are matched to the collection keys by a `ngMessage` or

 * `ngMessageExp` directive. The value of these attributes must match a key in the collection that is provided by

 * the `ngMessages` directive.

 *

 * Consider the following example, which illustrates a typical use case of `ngMessages`. Within the form `myForm` we

 * have a text input named `myField` which is bound to the scope variable `field` using the {@link ngModel ngModel}

 * directive.

 *

 * The `myField` field is a required input of type `email` with a maximum length of 15 characters.

 *

 * ```html

 * <form name="myForm">

 *   <label>

 *     Enter text:

 *     <input type="email" ng-model="field" name="myField" required maxlength="15" />

 *   </label>

 *   <div ng-messages="myForm.myField.$error" role="alert">

 *     <div ng-message="required">Please enter a value for this field.</div>

 *     <div ng-message="email">This field must be a valid email address.</div>

 *     <div ng-message="maxlength">This field can be at most 15 characters long.</div>

 *   </div>

 * </form>

 * ```

 *

 * In order to show error messages corresponding to `myField` we first create an element with an `ngMessages` attribute

 * set to the `$error` object owned by the `myField` input in our `myForm` form.

 *

 * Within this element we then create separate elements for each of the possible errors that `myField` could have.

 * The `ngMessage` attribute is used to declare which element(s) will appear for which error - for example,

 * setting `ng-message="required"` specifies that this particular element should be displayed when there

 * is no value present for the required field `myField` (because the key `required` will be `true` in the object

 * `myForm.myField.$error`).

 *

 * ### Message order

 *

 * By default, `ngMessages` will only display one message for a particular key/value collection at any time. If more

 * than one message (or error) key is currently true, then which message is shown is determined by the order of messages

 * in the HTML template code (messages declared first are prioritised). This mechanism means the developer does not have

 * to prioritize messages using custom JavaScript code.

 *

 * Given the following error object for our example (which informs us that the field `myField` currently has both the

 * `required` and `email` errors):

 *

 * ```javascript

 * <!-- keep in mind that ngModel automatically sets these error flags -->

 * myField.$error = { required : true, email: true, maxlength: false };

 * ```

 * The `required` message will be displayed to the user since it appears before the `email` message in the DOM.

 * Once the user types a single character, the `required` message will disappear (since the field now has a value)

 * but the `email` message will be visible because it is still applicable.

 *

 * ### Displaying multiple messages at the same time

 *

 * While `ngMessages` will by default only display one error element at a time, the `ng-messages-multiple` attribute can

 * be applied to the `ngMessages` container element to cause it to display all applicable error messages at once:

 *

 * ```html

 * <!-- attribute-style usage -->

 * <div ng-messages="myForm.myField.$error" ng-messages-multiple>...</div>

 *

 * <!-- element-style usage -->

 * <ng-messages for="myForm.myField.$error" multiple>...</ng-messages>

 * ```

 *

 * ## Reusing and Overriding Messages

 * In addition to prioritization, ngMessages also allows for including messages from a remote or an inline

 * template. This allows for generic collection of messages to be reused across multiple parts of an

 * application.

 *

 * ```html

 * <script type="text/ng-template" id="error-messages">

 *   <div ng-message="required">This field is required</div>

 *   <div ng-message="minlength">This field is too short</div>

 * </script>

 *

 * <div ng-messages="myForm.myField.$error" role="alert">

 *   <div ng-messages-include="error-messages"></div>

 * </div>

 * ```

 *

 * However, including generic messages may not be useful enough to match all input fields, therefore,

 * `ngMessages` provides the ability to override messages defined in the remote template by redefining

 * them within the directive container.

 *

 * ```html

 * <!-- a generic template of error messages known as "my-custom-messages" -->

 * <script type="text/ng-template" id="my-custom-messages">

 *   <div ng-message="required">This field is required</div>

 *   <div ng-message="minlength">This field is too short</div>

 * </script>

 *

 * <form name="myForm">

 *   <label>

 *     Email address

 *     <input type="email"

 *            id="email"

 *            name="myEmail"

 *            ng-model="email"

 *            minlength="5"

 *            required />

 *   </label>

 *   <!-- any ng-message elements that appear BEFORE the ng-messages-include will

 *        override the messages present in the ng-messages-include template -->

 *   <div ng-messages="myForm.myEmail.$error" role="alert">

 *     <!-- this required message has overridden the template message -->

 *     <div ng-message="required">You did not enter your email address</div>

 *

 *     <!-- this is a brand new message and will appear last in the prioritization -->

 *     <div ng-message="email">Your email address is invalid</div>

 *

 *     <!-- and here are the generic error messages -->

 *     <div ng-messages-include="my-custom-messages"></div>

 *   </div>

 * </form>

 * ```

 *

 * In the example HTML code above the message that is set on required will override the corresponding

 * required message defined within the remote template. Therefore, with particular input fields (such

 * email addresses, date fields, autocomplete inputs, etc...), specialized error messages can be applied

 * while more generic messages can be used to handle other, more general input errors.

 *

 * ## Dynamic Messaging

 * ngMessages also supports using expressions to dynamically change key values. Using arrays and

 * repeaters to list messages is also supported. This means that the code below will be able to

 * fully adapt itself and display the appropriate message when any of the expression data changes:

 *

 * ```html

 * <form name="myForm">

 *   <label>

 *     Email address

 *     <input type="email"

 *            name="myEmail"

 *            ng-model="email"

 *            minlength="5"

 *            required />

 *   </label>

 *   <div ng-messages="myForm.myEmail.$error" role="alert">

 *     <div ng-message="required">You did not enter your email address</div>

 *     <div ng-repeat="errorMessage in errorMessages">

 *       <!-- use ng-message-exp for a message whose key is given by an expression -->

 *       <div ng-message-exp="errorMessage.type">{{ errorMessage.text }}</div>

 *     </div>

 *   </div>

 * </form>

 * ```

 *

 * The `errorMessage.type` expression can be a string value or it can be an array so

 * that multiple errors can be associated with a single error message:

 *

 * ```html

 *   <label>

 *     Email address

 *     <input type="email"

 *            ng-model="data.email"

 *            name="myEmail"

 *            ng-minlength="5"

 *            ng-maxlength="100"

 *            required />

 *   </label>

 *   <div ng-messages="myForm.myEmail.$error" role="alert">

 *     <div ng-message-exp="'required'">You did not enter your email address</div>

 *     <div ng-message-exp="['minlength', 'maxlength']">

 *       Your email must be between 5 and 100 characters long

 *     </div>

 *   </div>

 * ```

 *

 * Feel free to use other structural directives such as ng-if and ng-switch to further control

 * what messages are active and when. Be careful, if you place ng-message on the same element

 * as these structural directives, Angular may not be able to determine if a message is active

 * or not. Therefore it is best to place the ng-message on a child element of the structural

 * directive.

 *

 * ```html

 * <div ng-messages="myForm.myEmail.$error" role="alert">

 *   <div ng-if="showRequiredError">

 *     <div ng-message="required">Please enter something</div>

 *   </div>

 * </div>

 * ```

 *

 * ## Animations

 * If the `ngAnimate` module is active within the application then the `ngMessages`, `ngMessage` and

 * `ngMessageExp` directives will trigger animations whenever any messages are added and removed from

 * the DOM by the `ngMessages` directive.

 *

 * Whenever the `ngMessages` directive contains one or more visible messages then the `.ng-active` CSS

 * class will be added to the element. The `.ng-inactive` CSS class will be applied when there are no

 * messages present. Therefore, CSS transitions and keyframes as well as JavaScript animations can

 * hook into the animations whenever these classes are added/removed.

 *

 * Let's say that our HTML code for our messages container looks like so:

 *

 * ```html

 * <div ng-messages="myMessages" class="my-messages" role="alert">

 *   <div ng-message="alert" class="some-message">...</div>

 *   <div ng-message="fail" class="some-message">...</div>

 * </div>

 * ```

 *

 * Then the CSS animation code for the message container looks like so:

 *

 * ```css

 * .my-messages {

 *   transition:1s linear all;

 * }

 * .my-messages.ng-active {

 *   // messages are visible

 * }

 * .my-messages.ng-inactive {

 *   // messages are hidden

 * }

 * ```

 *

 * Whenever an inner message is attached (becomes visible) or removed (becomes hidden) then the enter

 * and leave animation is triggered for each particular element bound to the `ngMessage` directive.

 *

 * Therefore, the CSS code for the inner messages looks like so:

 *

 * ```css

 * .some-message {

 *   transition:1s linear all;

 * }

 *

 * .some-message.ng-enter {}

 * .some-message.ng-enter.ng-enter-active {}

 *

 * .some-message.ng-leave {}

 * .some-message.ng-leave.ng-leave-active {}

 * ```

 *

 * {@link ngAnimate Click here} to learn how to use JavaScript animations or to learn more about ngAnimate.

 */

angular.module('ngMessages', [], function initAngularHelpers() {

  // Access helpers from angular core.

  // Do it inside a `config` block to ensure `window.angular` is available.

  forEach = angular.forEach;

  isArray = angular.isArray;

  isString = angular.isString;

  jqLite = angular.element;

})

  .info({ angularVersion: '1.6.4' })

  /**

   * @ngdoc directive

   * @module ngMessages

   * @name ngMessages

   * @restrict AE

   *

   * @description

   * `ngMessages` is a directive that is designed to show and hide messages based on the state

   * of a key/value object that it listens on. The directive itself complements error message

   * reporting with the `ngModel` $error object (which stores a key/value state of validation errors).

   *

   * `ngMessages` manages the state of internal messages within its container element. The internal

   * messages use the `ngMessage` directive and will be inserted/removed from the page depending

   * on if they're present within the key/value object. By default, only one message will be displayed

   * at a time and this depends on the prioritization of the messages within the template. (This can

   * be changed by using the `ng-messages-multiple` or `multiple` attribute on the directive container.)

   *

   * A remote template can also be used to promote message reusability and messages can also be

   * overridden.

   *

   * {@link module:ngMessages Click here} to learn more about `ngMessages` and `ngMessage`.

   *

   * @usage

   * ```html

   * <!-- using attribute directives -->

   * <ANY ng-messages="expression" role="alert">

   *   <ANY ng-message="stringValue">...</ANY>

   *   <ANY ng-message="stringValue1, stringValue2, ...">...</ANY>

   *   <ANY ng-message-exp="expressionValue">...</ANY>

   * </ANY>

   *

   * <!-- or by using element directives -->

   * <ng-messages for="expression" role="alert">

   *   <ng-message when="stringValue">...</ng-message>

   *   <ng-message when="stringValue1, stringValue2, ...">...</ng-message>

   *   <ng-message when-exp="expressionValue">...</ng-message>

   * </ng-messages>

   * ```

   *

   * @param {string} ngMessages an angular expression evaluating to a key/value object

   *                 (this is typically the $error object on an ngModel instance).

   * @param {string=} ngMessagesMultiple|multiple when set, all messages will be displayed with true

   *

   * @example

   * <example name="ngMessages-directive" module="ngMessagesExample"

   *          deps="angular-messages.js"

   *          animations="true" fixBase="true">

   *   <file name="index.html">

   *     <form name="myForm">

   *       <label>

   *         Enter your name:

   *         <input type="text"

   *                name="myName"

   *                ng-model="name"

   *                ng-minlength="5"

   *                ng-maxlength="20"

   *                required />

   *       </label>

   *       <pre>myForm.myName.$error = {{ myForm.myName.$error | json }}</pre>

   *

   *       <div ng-messages="myForm.myName.$error" style="color:maroon" role="alert">

   *         <div ng-message="required">You did not enter a field</div>

   *         <div ng-message="minlength">Your field is too short</div>

   *         <div ng-message="maxlength">Your field is too long</div>

   *       </div>

   *     </form>

   *   </file>

   *   <file name="script.js">

   *     angular.module('ngMessagesExample', ['ngMessages']);

   *   </file>

   * </example>

   */

  .directive('ngMessages', ['$animate', function($animate) {

    var ACTIVE_CLASS = 'ng-active';

    var INACTIVE_CLASS = 'ng-inactive';

    return {

      require: 'ngMessages',

      restrict: 'AE',

      controller: ['$element', '$scope', '$attrs', function NgMessagesCtrl($element, $scope, $attrs) {

        var ctrl = this;

        var latestKey = 0;

        var nextAttachId = 0;

        this.getAttachId = function getAttachId() { return nextAttachId++; };

        var messages = this.messages = {};

        var renderLater, cachedCollection;

        this.render = function(collection) {

          collection = collection || {};

          renderLater = false;

          cachedCollection = collection;

          // this is true if the attribute is empty or if the attribute value is truthy

          var multiple = isAttrTruthy($scope, $attrs.ngMessagesMultiple) ||

                         isAttrTruthy($scope, $attrs.multiple);

          var unmatchedMessages = [];

          var matchedKeys = {};

          var messageItem = ctrl.head;

          var messageFound = false;

          var totalMessages = 0;

          // we use != instead of !== to allow for both undefined and null values

          while (messageItem != null) {

            totalMessages++;

            var messageCtrl = messageItem.message;

            var messageUsed = false;

            if (!messageFound) {

              forEach(collection, function(value, key) {

                if (!messageUsed && truthy(value) && messageCtrl.test(key)) {

                  // this is to prevent the same error name from showing up twice

                  if (matchedKeys[key]) return;

                  matchedKeys[key] = true;

                  messageUsed = true;

                  messageCtrl.attach();

                }

              });

            }

            if (messageUsed) {

              // unless we want to display multiple messages then we should

              // set a flag here to avoid displaying the next message in the list

              messageFound = !multiple;

            } else {

              unmatchedMessages.push(messageCtrl);

            }

            messageItem = messageItem.next;

          }

          forEach(unmatchedMessages, function(messageCtrl) {

            messageCtrl.detach();

          });

          if (unmatchedMessages.length !== totalMessages) {

            $animate.setClass($element, ACTIVE_CLASS, INACTIVE_CLASS);

          } else {

            $animate.setClass($element, INACTIVE_CLASS, ACTIVE_CLASS);

          }

        };

        $scope.$watchCollection($attrs.ngMessages || $attrs['for'], ctrl.render);

        // If the element is destroyed, proactively destroy all the currently visible messages

        $element.on('$destroy', function() {

          forEach(messages, function(item) {

            item.message.detach();

          });

        });

        this.reRender = function() {

          if (!renderLater) {

            renderLater = true;

            $scope.$evalAsync(function() {

              if (renderLater && cachedCollection) {

                ctrl.render(cachedCollection);

              }

            });

          }

        };

        this.register = function(comment, messageCtrl) {

          var nextKey = latestKey.toString();

          messages[nextKey] = {

            message: messageCtrl

          };

          insertMessageNode($element[0], comment, nextKey);

          comment.$$ngMessageNode = nextKey;

          latestKey++;

          ctrl.reRender();

        };

        this.deregister = function(comment) {

          var key = comment.$$ngMessageNode;

          delete comment.$$ngMessageNode;

          removeMessageNode($element[0], comment, key);

          delete messages[key];

          ctrl.reRender();

        };

        function findPreviousMessage(parent, comment) {

          var prevNode = comment;

          var parentLookup = [];

          while (prevNode && prevNode !== parent) {

            var prevKey = prevNode.$$ngMessageNode;

            if (prevKey && prevKey.length) {

              return messages[prevKey];

            }

            // dive deeper into the DOM and examine its children for any ngMessage

            // comments that may be in an element that appears deeper in the list

            if (prevNode.childNodes.length && parentLookup.indexOf(prevNode) === -1) {

              parentLookup.push(prevNode);

              prevNode = prevNode.childNodes[prevNode.childNodes.length - 1];

            } else if (prevNode.previousSibling) {

              prevNode = prevNode.previousSibling;

            } else {

              prevNode = prevNode.parentNode;

              parentLookup.push(prevNode);

            }

          }

        }

        function insertMessageNode(parent, comment, key) {

          var messageNode = messages[key];

          if (!ctrl.head) {

            ctrl.head = messageNode;

          } else {

            var match = findPreviousMessage(parent, comment);

            if (match) {

              messageNode.next = match.next;

              match.next = messageNode;

            } else {

              messageNode.next = ctrl.head;

              ctrl.head = messageNode;

            }

          }

        }

        function removeMessageNode(parent, comment, key) {

          var messageNode = messages[key];

          var match = findPreviousMessage(parent, comment);

          if (match) {

            match.next = messageNode.next;

          } else {

            ctrl.head = messageNode.next;

          }

        }

      }]

    };

    function isAttrTruthy(scope, attr) {

     return (isString(attr) && attr.length === 0) || //empty attribute

            truthy(scope.$eval(attr));

    }

    function truthy(val) {

      return isString(val) ? val.length : !!val;

    }

  }])

  /**

   * @ngdoc directive

   * @name ngMessagesInclude

   * @restrict AE

   * @scope

   *

   * @description

   * `ngMessagesInclude` is a directive with the purpose to import existing ngMessage template

   * code from a remote template and place the downloaded template code into the exact spot

   * that the ngMessagesInclude directive is placed within the ngMessages container. This allows

   * for a series of pre-defined messages to be reused and also allows for the developer to

   * determine what messages are overridden due to the placement of the ngMessagesInclude directive.

   *

   * @usage

   * ```html

   * <!-- using attribute directives -->

   * <ANY ng-messages="expression" role="alert">

   *   <ANY ng-messages-include="remoteTplString">...</ANY>

   * </ANY>

   *

   * <!-- or by using element directives -->

   * <ng-messages for="expression" role="alert">

   *   <ng-messages-include src="expressionValue1">...</ng-messages-include>

   * </ng-messages>

   * ```

   *

   * {@link module:ngMessages Click here} to learn more about `ngMessages` and `ngMessage`.

   *

   * @param {string} ngMessagesInclude|src a string value corresponding to the remote template.

   */

  .directive('ngMessagesInclude',

    ['$templateRequest', '$document', '$compile', function($templateRequest, $document, $compile) {

    return {

      restrict: 'AE',

      require: '^^ngMessages', // we only require this for validation sake

      link: function($scope, element, attrs) {

        var src = attrs.ngMessagesInclude || attrs.src;

        $templateRequest(src).then(function(html) {

          if ($scope.$$destroyed) return;

          if (isString(html) && !html.trim()) {

            // Empty template - nothing to compile

            replaceElementWithMarker(element, src);

          } else {

            // Non-empty template - compile and link

            $compile(html)($scope, function(contents) {

              element.after(contents);

              replaceElementWithMarker(element, src);

            });

          }

        });

      }

    };

    // Helpers

    function replaceElementWithMarker(element, src) {

      // A comment marker is placed for debugging purposes

      var comment = $compile.$$createComment ?

          $compile.$$createComment('ngMessagesInclude', src) :

          $document[0].createComment(' ngMessagesInclude: ' + src + ' ');

      var marker = jqLite(comment);

      element.after(marker);

      // Don't pollute the DOM anymore by keeping an empty directive element

      element.remove();

    }

  }])

  /**

   * @ngdoc directive

   * @name ngMessage

   * @restrict AE

   * @scope

   *

   * @description

   * `ngMessage` is a directive with the purpose to show and hide a particular message.

   * For `ngMessage` to operate, a parent `ngMessages` directive on a parent DOM element

   * must be situated since it determines which messages are visible based on the state

   * of the provided key/value map that `ngMessages` listens on.

   *

   * More information about using `ngMessage` can be found in the

   * {@link module:ngMessages `ngMessages` module documentation}.

   *

   * @usage

   * ```html

   * <!-- using attribute directives -->

   * <ANY ng-messages="expression" role="alert">

   *   <ANY ng-message="stringValue">...</ANY>

   *   <ANY ng-message="stringValue1, stringValue2, ...">...</ANY>

   * </ANY>

   *

   * <!-- or by using element directives -->

   * <ng-messages for="expression" role="alert">

   *   <ng-message when="stringValue">...</ng-message>

   *   <ng-message when="stringValue1, stringValue2, ...">...</ng-message>

   * </ng-messages>

   * ```

   *

   * @param {expression} ngMessage|when a string value corresponding to the message key.

   */

  .directive('ngMessage', ngMessageDirectiveFactory())

  /**

   * @ngdoc directive

   * @name ngMessageExp

   * @restrict AE

   * @priority 1

   * @scope

   *

   * @description

   * `ngMessageExp` is the same as {@link directive:ngMessage `ngMessage`}, but instead of a static

   * value, it accepts an expression to be evaluated for the message key.

   *

   * @usage

   * ```html

   * <!-- using attribute directives -->

   * <ANY ng-messages="expression">

   *   <ANY ng-message-exp="expressionValue">...</ANY>

   * </ANY>

   *

   * <!-- or by using element directives -->

   * <ng-messages for="expression">

   *   <ng-message when-exp="expressionValue">...</ng-message>

   * </ng-messages>

   * ```

   *

   * {@link module:ngMessages Click here} to learn more about `ngMessages` and `ngMessage`.

   *

   * @param {expression} ngMessageExp|whenExp an expression value corresponding to the message key.

   */

  .directive('ngMessageExp', ngMessageDirectiveFactory());

function ngMessageDirectiveFactory() {

  return ['$animate', function($animate) {

    return {

      restrict: 'AE',

      transclude: 'element',

      priority: 1, // must run before ngBind, otherwise the text is set on the comment

      terminal: true,

      require: '^^ngMessages',

      link: function(scope, element, attrs, ngMessagesCtrl, $transclude) {

        var commentNode = element[0];

        var records;

        var staticExp = attrs.ngMessage || attrs.when;

        var dynamicExp = attrs.ngMessageExp || attrs.whenExp;

        var assignRecords = function(items) {

          records = items

              ? (isArray(items)

                  ? items

                  : items.split(/[\s,]+/))

              : null;

          ngMessagesCtrl.reRender();

        };

        if (dynamicExp) {

          assignRecords(scope.$eval(dynamicExp));

          scope.$watchCollection(dynamicExp, assignRecords);

        } else {

          assignRecords(staticExp);

        }

        var currentElement, messageCtrl;

        ngMessagesCtrl.register(commentNode, messageCtrl = {

          test: function(name) {

            return contains(records, name);

          },

          attach: function() {

            if (!currentElement) {

              $transclude(function(elm, newScope) {

                $animate.enter(elm, null, element);

                currentElement = elm;

                // Each time we attach this node to a message we get a new id that we can match

                // when we are destroying the node later.

                var $$attachId = currentElement.$$attachId = ngMessagesCtrl.getAttachId();

                // in the event that the element or a parent element is destroyed

                // by another structural directive then it's time

                // to deregister the message from the controller

                currentElement.on('$destroy', function() {

                  if (currentElement && currentElement.$$attachId === $$attachId) {

                    ngMessagesCtrl.deregister(commentNode);

                    messageCtrl.detach();

                  }

                  newScope.$destroy();

                });

              });

            }

          },

          detach: function() {

            if (currentElement) {

              var elm = currentElement;

              currentElement = null;

              $animate.leave(elm);

            }

          }

        });

      }

    };

  }];

  function contains(collection, key) {

    if (collection) {

      return isArray(collection)

          ? collection.indexOf(key) >= 0

          : collection.hasOwnProperty(key);

    }

  }

}

})(window, window.angular);