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author	Igor Minar	2013-01-23 10:54:35 -0800
committer	Igor Minar	2013-01-23 10:54:35 -0800
commit	574573499128f18dabc29dbd2cbd54a59f5a4f0e (patch)
tree	c81f8cb271b01f0364ef042aaa7f8bdfd91c35e6 /src/ng/rootElement.js
parent	0551aa95f0376c52568a027296e225d828cede38 (diff)
download	angular.js-574573499128f18dabc29dbd2cbd54a59f5a4f0e.tar.bz2

chore(release): cut 1.1.2 tofu-animation releasev1.1.2

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'use strict';

/**
 * @ngdoc function
 * @name angular.directive
 * @description
 *
 * Angular directives create custom attributes for DOM elements. A directive can modify the
 * behavior of the element in which it is specified. Do not use directives to add elements to the
 * DOM; instead, use {@link angular.widget widgets} to add DOM elements.
 *
 * For more information about how Angular directives work, and to learn how to create your own
 * directives, see {@link guide/dev_guide.compiler.directives Understanding Angular Directives} in
 * the Angular Developer Guide.
 *
 * @param {string} name Directive identifier (case insensitive).
 * @param {function(string, Element)} compileFn Also called "template function" is a function called
 *    during compilation of the template when the compiler comes across the directive being
 *    registered. The string value of the element attribute representing the directive and
 *    jQuery/jqLite wrapped DOM element are passed as arguments to this function.
 *
 *    The `compileFn` function may return a linking function also called an instance function.
 *    This function is called during the linking phase when a Scope is being associated with the
 *    template or template clone (see repeater notes below). The signature of the linking function
 *    is: `function(Element)` where Element is jQuery/jqLite wrapped DOM Element that is being
 *    linked.
 *
 * The biggest differenciator between the compile and linking functions is how they are being called
 * when a directive is present within an {@link angular.widget.@ng:repeat ng:repeat}. In this case,
 * the compile function gets called once per occurence of the directive in the template. On the
 * other hand the linking function gets called once for each repeated clone of the template (times
 * number of occurences of the directive in the repeated template).
 */

/**
 * @ngdoc directive
 * @name angular.directive.ng:init
 *
 * @description
 * The `ng:init` attribute specifies initialization tasks to be executed
 *  before the template enters execution mode during bootstrap.
 *
 * @element ANY
 * @param {expression} expression {@link guide/dev_guide.expressions Expression} to eval.
 *
 * @example
   <doc:example>
     <doc:source>
    <div ng:init="greeting='Hello'; person='World'">
      {{greeting}} {{person}}!
    </div>
     </doc:source>
     <doc:scenario>
       it('should check greeting', function() {
         expect(binding('greeting')).toBe('Hello');
         expect(binding('person')).toBe('World');
       });
     </doc:scenario>
   </doc:example>
 */
angularDirective("ng:init", function(expression){
  return function(element){
    this.$eval(expression);
  };
});

/**
 * @ngdoc directive
 * @name angular.directive.ng:controller
 *
 * @description
 * The `ng:controller` directive assigns behavior to a scope. This is a key aspect of how angular
 * supports the principles behind the Model-View-Controller design pattern.
 *
 * MVC components in angular:
 *
 * * Model — The Model is data in scope properties; scopes are attached to the DOM.
 * * View — The template (HTML with data bindings) is rendered into the View.
 * * Controller — The `ng:controller` directive specifies a Controller class; the class has
 *   methods that typically express the business logic behind the application.
 *
 * Note that an alternative way to define controllers is via the `{@link angular.module.ng.$route}`
 * service.
 *
 * @element ANY
 * @param {expression} expression Name of a globally accessible constructor function or an
 *     {@link guide/dev_guide.expressions expression} that on the current scope evaluates to a
 *     constructor function.
 *
 * @example
 * Here is a simple form for editing user contact information. Adding, removing, clearing, and
 * greeting are methods declared on the controller (see source tab). These methods can
 * easily be called from the angular markup. Notice that the scope becomes the `this` for the
 * controller's instance. This allows for easy access to the view data from the controller. Also
 * notice that any changes to the data are automatically reflected in the View without the need
 * for a manual update.
   <doc:example>
     <doc:source>
      <script type="text/javascript">
        function SettingsController($scope) {
          $scope.name = "John Smith";
          $scope.contacts = [
            {type:'phone', value:'408 555 1212'},
            {type:'email', value:'john.smith@example.org'} ];

          $scope.greet = function() {
           alert(this.name);
          };

          $scope.addContact = function() {
           this.contacts.push({type:'email', value:'yourname@example.org'});
          };

          $scope.removeContact = function(contactToRemove) {
           var index = this.contacts.indexOf(contactToRemove);
           this.contacts.splice(index, 1);
          };

          $scope.clearContact = function(contact) {
           contact.type = 'phone';
           contact.value = '';
          };
        }
      </script>
      <div ng:controller="SettingsController">
        Name: <input type="text" ng:model="name"/>
        [ <a href="" ng:click="greet()">greet</a> ]<br/>
        Contact:
        <ul>
          <li ng:repeat="contact in contacts">
            <select ng:model="contact.type">
               <option>phone</option>
               <option>email</option>
            </select>
            <input type="text" ng:model="contact.value"/>
            [ <a href="" ng:click="clearContact(contact)">clear</a>
            | <a href="" ng:click="removeContact(contact)">X</a> ]
          </li>
          <li>[ <a href="" ng:click="addContact()">add</a> ]</li>
       </ul>
      </div>
     </doc:source>
     <doc:scenario>
       it('should check controller', function() {
         expect(element('.doc-example-live div>:input').val()).toBe('John Smith');
         expect(element('.doc-example-live li:nth-child(1) input').val())
           .toBe('408 555 1212');
         expect(element('.doc-example-live li:nth-child(2) input').val())
           .toBe('john.smith@example.org');

         element('.doc-example-live li:first a:contains("clear")').click();
         expect(element('.doc-example-live li:first input').val()).toBe('');

         element('.doc-example-live li:last a:contains("add")').click();
         expect(element('.doc-example-live li:nth-child(3) input').val())
           .toBe('yourname@example.org');
       });
     </doc:scenario>
   </doc:example>
 */
angularDirective("ng:controller", function(expression) {
  this.scope(true);
  return ['$controller', '$window', function($controller, $window) {
    var scope = this,
        Controller = getter(scope, expression, true) || getter($window, expression, true);

    assertArgFn(Controller, expression);
    $controller(Controller, scope);
  }];
});

/**
 * @ngdoc directive
 * @name angular.directive.ng:bind
 *
 * @description
 * The `ng:bind` attribute tells Angular to replace the text content of the specified HTML element
 * with the value of a given expression, and to update the text content when the value of that
 * expression changes.
 *
 * Typically, you don't use `ng:bind` directly, but instead you use the double curly markup like
 * `{{ expression }}` and let the Angular compiler transform it to
 * `<span ng:bind="expression"></span>` when the template is compiled.
 *
 * @element ANY
 * @param {expression} expression {@link guide/dev_guide.expressions Expression} to evaluate.
 *
 * @example
 * Enter a name in the Live Preview text box; the greeting below the text box changes instantly.
   <doc:example>
     <doc:source>
       <script>
         function Ctrl($scope) {
           $scope.name = 'Whirled';
         }
       </script>
       <div ng:controller="Ctrl">
         Enter name: <input type="text" ng:model="name"> <br/>
         Hello <span ng:bind="name"></span>!
       </div>
     </doc:source>
     <doc:scenario>
       it('should check ng:bind', function() {
         expect(using('.doc-example-live').binding('name')).toBe('Whirled');
         using('.doc-example-live').input('name').enter('world');
         expect(using('.doc-example-live').binding('name')).toBe('world');
       });
     </doc:scenario>
   </doc:example>
 */
angularDirective("ng:bind", function(expression, element){
  element.addClass('ng-binding');
  return ['$exceptionHandler', '$parse', '$element', function($exceptionHandler, $parse, element) {
    var exprFn = $parse(expression),
        lastValue = Number.NaN,
        scope = this;

    scope.$watch(function() {
      // TODO(misko): remove error handling https://github.com/angular/angular.js/issues/347
      var value, html, isHtml, isDomElement,
          hadOwnElement = scope.hasOwnProperty('$element'),
          oldElement = scope.$element;
      // TODO(misko): get rid of $element https://github.com/angular/angular.js/issues/348
      scope.$element = element;
      try {
        value = exprFn(scope);
        // If we are HTML than save the raw HTML data so that we don't recompute sanitization since
        // it is expensive.
        // TODO(misko): turn this into a more generic way to compute this
        if ((isHtml = (value instanceof HTML)))
          value = (html = value).html;
        if (lastValue === value) return;
        isDomElement = isElement(value);
        if (!isHtml && !isDomElement && isObject(value)) {
          value = toJson(value, true);
        }
        if (value != lastValue) {
          lastValue = value;
          if (isHtml) {
            element.html(html.get());
          } else if (isDomElement) {
            element.html('');
            element.append(value);
          } else {
            element.text(value == undefined ? '' : value);
          }
        }
      } catch (e) {
        $exceptionHandler(e);
      } finally {
        if (hadOwnElement) {
          scope.$element = oldElement;
        } else {
          delete scope.$element;
        }
      }
    });
  }];
});


/**
 * @ngdoc directive
 * @name angular.directive.ng:bind-template
 *
 * @description
 * The `ng:bind-template` attribute specifies that the element
 * text should be replaced with the template in ng:bind-template.
 * Unlike ng:bind the ng:bind-template can contain multiple `{{` `}}`
 * expressions. (This is required since some HTML elements
 * can not have SPAN elements such as TITLE, or OPTION to name a few.)
 *
 * @element ANY
 * @param {string} template of form
 *   <tt>{{</tt> <tt>expression</tt> <tt>}}</tt> to eval.
 *
 * @example
 * Try it here: enter text in text box and watch the greeting change.
   <doc:example>
     <doc:source>
       <script>
         function Ctrl($scope) {
           $scope.salutation = 'Hello';
           $scope.name = 'World';
         }
       </script>
       <div ng:controller="Ctrl">
        Salutation: <input type="text" ng:model="salutation"><br/>
        Name: <input type="text" ng:model="name"><br/>
        <pre ng:bind-template="{{salutation}} {{name}}!"></pre>
       </div>
     </doc:source>
     <doc:scenario>
       it('should check ng:bind', function() {
         expect(using('.doc-example-live').binding('{{salutation}} {{name}}')).
           toBe('Hello World!');
         using('.doc-example-live').input('salutation').enter('Greetings');
         using('.doc-example-live').input('name').enter('user');
         expect(using('.doc-example-live').binding('{{salutation}} {{name}}')).
           toBe('Greetings user!');
       });
     </doc:scenario>
   </doc:example>
 */
angularDirective("ng:bind-template", function(expression, element){
  element.addClass('ng-binding');
  var templateFn = compileBindTemplate(expression);
  return function(element) {
    var lastValue,
        scope = this;

    scope.$watch(function() {
      var value = templateFn(scope, element, true);
      if (value != lastValue) {
        element.text(value);
        lastValue = value;
      }
    });
  };
});

/**
 * @ngdoc directive
 * @name angular.directive.ng:bind-attr
 *
 * @description
 * The `ng:bind-attr` attribute specifies that a
 * {@link guide/dev_guide.templates.databinding databinding}  should be created between a particular
 * element attribute and a given expression. Unlike `ng:bind`, the `ng:bind-attr` contains one or
 * more JSON key value pairs; each pair specifies an attribute and the
 * {@link guide/dev_guide.expressions expression} to which it will be mapped.
 *
 * Instead of writing `ng:bind-attr` statements in your HTML, you can use double-curly markup to
 * specify an <tt ng:non-bindable>{{expression}}</tt> for the value of an attribute.
 * At compile time, the attribute is translated into an
 * `<span ng:bind-attr="{attr:expression}"></span>`.
 *
 * The following HTML snippet shows how to specify `ng:bind-attr`:
 * <pre>
 *   <a ng:bind-attr='{"href":"http://www.google.com/search?q={{query}}"}'>Google</a>
 * </pre>
 *
 * This is cumbersome, so as we mentioned using double-curly markup is a prefered way of creating
 * this binding:
 * <pre>
 *   <a href="http://www.google.com/search?q={{query}}">Google</a>
 * </pre>
 *
 * During compilation, the template with attribute markup gets translated to the ng:bind-attr form
 * mentioned above.
 *
 * _Note_: You might want to consider using {@link angular.directive.ng:href ng:href} instead of
 * `href` if the binding is present in the main application template (`index.html`) and you want to
 * make sure that a user is not capable of clicking on raw/uncompiled link.
 *
 *
 * @element ANY
 * @param {string} attribute_json one or more JSON key-value pairs representing
 *    the attributes to replace with expressions. Each key matches an attribute
 *    which needs to be replaced. Each value is a text template of
 *    the attribute with the embedded
 *    <tt ng:non-bindable>{{expression}}</tt>s. Any number of
 *    key-value pairs can be specified.
 *
 * @example
 * Enter a search string in the Live Preview text box and then click "Google". The search executes instantly.
   <doc:example>
     <doc:source>
       <script>
         function Ctrl($scope) {
           $scope.query = 'AngularJS';
         }
       </script>
       <div ng:controller="Ctrl">
        Google for:
        <input type="text" ng:model="query"/>
        <a ng:bind-attr='{"href":"http://www.google.com/search?q={{query}}"}'>
          Google
        </a> (ng:bind-attr) |
        <a href="http://www.google.com/search?q={{query}}">Google</a>
        (curly binding in attribute val)
       </div>
     </doc:source>
     <doc:scenario>
       it('should check ng:bind-attr', function() {
         expect(using('.doc-example-live').element('a').attr('href')).
           toBe('http://www.google.com/search?q=AngularJS');
         using('.doc-example-live').input('query').enter('google');
         expect(using('.doc-example-live').element('a').attr('href')).
           toBe('http://www.google.com/search?q=google');
       });
     </doc:scenario>
   </doc:example>
 */
angularDirective("ng:bind-attr", function(expression){
  return function(element){
    var lastValue = {},
        scope = this;

    scope.$watch(function() {
      var values = scope.$eval(expression);
      for(var key in values) {
        var value = compileBindTemplate(values[key])(scope, element);
        if (lastValue[key] !== value) {
          lastValue[key] = value;
          element.attr(key, BOOLEAN_ATTR[lowercase(key)] ? toBoolean(value) : value);
        }
      }
    });
  };
});


/**
 * @ngdoc directive
 * @name angular.directive.ng:click
 *
 * @description
 * The ng:click allows you to specify custom behavior when
 * element is clicked.
 *
 * @element ANY
 * @param {expression} expression {@link guide/dev_guide.expressions Expression} to evaluate upon
 * click.
 *
 * @example
   <doc:example>
     <doc:source>
      <button ng:click="count = count + 1" ng:init="count=0">
        Increment
      </button>
      count: {{count}}
     </doc:source>
     <doc:scenario>
       it('should check ng:click', function() {
         expect(binding('count')).toBe('0');
         element('.doc-example-live :button').click();
         expect(binding('count')).toBe('1');
       });
     </doc:scenario>
   </doc:example>
 */
/*
 * A directive that allows creation of custom onclick handlers that are defined as angular
 * expressions and are compiled and executed within the current scope.
 *
 * Events that are handled via these handler are always configured not to propagate further.
 *
 * TODO: maybe we should consider allowing users to control event propagation in the future.
 */
angularDirective("ng:click", function(expression, element){
  return function(element){
    var self = this;
    element.bind('click', function(event){
      self.$apply(expression);
      event.stopPropagation();
    });
  };
});


/**
 * @ngdoc directive
 * @name angular.directive.ng:submit
 *
 * @description
 * Enables binding angular expressions to onsubmit events.
 *
 * Additionally it prevents the default action (which for form means sending the request to the
 * server and reloading the current page).
 *
 * @element form
 * @param {expression} expression {@link guide/dev_guide.expressions Expression} to eval.
 *
 * @example
   <doc:example>
     <doc:source>
      <script>
        function Ctrl($scope) {
          $scope.list = [];
          $scope.text = 'hello';
          $scope.submit = function() {
            if (this.text) {
              this.list.push(this.text);
              this.text = '';
            }
          };
        }
      </script>
      <form ng:submit="submit()" ng:controller="Ctrl">
        Enter text and hit enter:
        <input type="text" ng:model="text" name="text" />
        <input type="submit" id="submit" value="Submit" />
        <pre>list={{list}}</pre>
      </form>
     </doc:source>
     <doc:scenario>
       it('should check ng:submit', function() {
         expect(binding('list')).toBe('list=[]');
         element('.doc-example-live #submit').click();
         expect(binding('list')).toBe('list=["hello"]');
         expect(input('text').val()).toBe('');
       });
       it('should ignore empty strings', function() {
         expect(binding('list')).toBe('list=[]');
         element('.doc-example-live #submit').click();
         element('.doc-example-live #submit').click();
         expect(binding('list')).toBe('list=["hello"]');
       });
     </doc:scenario>
   </doc:example>
 */
angularDirective("ng:submit", function(expression, element) {
  return function(element) {
    var self = this;
    element.bind('submit', function() {
      self.$apply(expression);
    });
  };
});


function ngClass(selector) {
  return function(expression, element) {
    return function(element) {
      var scope = this;
      scope.$watch(expression, function(newVal, oldVal) {
        if (selector(scope.$index)) {
          if (oldVal && (newVal !== oldVal)) {
            if (isObject(oldVal) && !isArray(oldVal))
              oldVal = map(oldVal, function(v, k) { if (v) return k });
            element.removeClass(isArray(oldVal) ? oldVal.join(' ') : oldVal);
          }
          if (isObject(newVal) && !isArray(newVal))
            newVal = map(newVal, function(v, k) { if (v) return k });
          if (newVal) element.addClass(isArray(newVal) ? newVal.join(' ') : newVal);
        }
      });
    };
  };
}

/**


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