knowhow-server/public/js/lib/angular-1.2.9/docs/partials/api/ng.directive:ngSwitch.html

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<a href="http://github.com/angular/angular.js/tree/v1.2.9/src/ng/directive/ngSwitch.js#L3" class="view-source btn btn-action"><i class="icon-zoom-in"> </i> View source</a><a href="http://github.com/angular/angular.js/edit/master/src/ng/directive/ngSwitch.js" class="improve-docs btn btn-primary"><i class="icon-edit"> </i> Improve this doc</a><h1><code ng:non-bindable="">ngSwitch</code>
<div><span class="hint">directive in module <code ng:non-bindable="">ng</code>
</span>
</div>
</h1>
<div><h2 id="description">Description</h2>
<div class="description"><div class="ng-directive-page ng-directive-ngswitch-page"><p>The <code>ngSwitch</code> directive is used to conditionally swap DOM structure on your template based on a scope expression.
Elements within <code>ngSwitch</code> but without <code>ngSwitchWhen</code> or <code>ngSwitchDefault</code> directives will be preserved at the location
as specified in the template.</p>
<p>The directive itself works similar to ngInclude, however, instead of downloading template code (or loading it
from the template cache), <code>ngSwitch</code> simply choses one of the nested elements and makes it visible based on which element
matches the value obtained from the evaluated expression. In other words, you define a container element
(where you place the directive), place an expression on the <strong><code>on=&quot;...&quot;</code> attribute</strong>
(or the <strong><code>ng-switch=&quot;...&quot;</code> attribute</strong>), define any inner elements inside of the directive and place
a when attribute per element. The when attribute is used to inform ngSwitch which element to display when the on
expression is evaluated. If a matching expression is not found via a when attribute then an element with the default
attribute is displayed.</p>
<div class="alert alert-info">
Be aware that the attribute values to match against cannot be expressions. They are interpreted
as literal string values to match against.
For example, <strong><code>ng-switch-when=&quot;someVal&quot;</code></strong> will match against the string <code>&quot;someVal&quot;</code> not against the
value of the expression <code>$scope.someVal</code>.
</div></div></div>
<h2 id="usage">Usage</h2>
<div class="usage"><p>This directive can be used as custom element, but be aware of <a href="guide/ie">IE restrictions</a>.</p><pre><code ng:non-bindable="">&lt;ANY ng-switch="expression"&gt;
&lt;ANY ng-switch-when="matchValue1"&gt;...&lt;/ANY&gt;
&lt;ANY ng-switch-when="matchValue2"&gt;...&lt;/ANY&gt;
&lt;ANY ng-switch-default&gt;...&lt;/ANY&gt;
&lt;/ANY&gt;</code>
</pre>
<h3 id="usage_directive-info">Directive info</h3>
<div class="directive-info"><ul><li>This directive creates new scope.</li>
<li>This directive executes at priority level 800.</li>
</ul>
</div>
<h3 id="usage_animations">Animations</h3>
<div class="animations"><ul><li>enter - happens after the ngSwitch contents change and the matched child element is placed inside the container</li><li>leave - happens just after the ngSwitch contents change and just before the former contents are removed from the DOM</li></ul></div>
<a href="api/ngAnimate.$animate">Click here</a> to learn more about the steps involved in the animation.<h4 id="usage_animations_parameters">Parameters</h4><table class="variables-matrix table table-bordered table-striped"><thead><tr><th>Param</th><th>Type</th><th>Details</th></tr></thead><tbody><tr><td>ngSwitch|on</td><td><a href="" class="label type-hint type-hint-object">*</a></td><td><div class="ng-directive-page ng-directive-ngswitch-page"><p>expression to match against <tt>ng-switch-when</tt>.</p>
</div></td></tr></tbody></table></div>
<h2 id="example">Example</h2>
<div class="example"><div class="ng-directive-page ng-directive-ngswitch-page"><h4 id="example_source">Source</h4>
<div source-edit="" source-edit-deps="angular.js angular-animate.js script.js" source-edit-html="index.html-119" source-edit-css="animations.css" source-edit-js="script.js-120" source-edit-json="" source-edit-unit="" source-edit-scenario="scenario.js-121" source-edit-protractor=""></div>
<div class="tabbable"><div class="tab-pane" title="index.html">
<pre class="prettyprint linenums" ng-set-text="index.html-119" ng-html-wrap=" angular.js angular-animate.js script.js"></pre>
<script type="text/ng-template" id="index.html-119">
  <div ng-controller="Ctrl">
    <select ng-model="selection" ng-options="item for item in items">
    </select>
    <tt>selection={{selection}}</tt>
    <hr/>
    <div class="animate-switch-container"
      ng-switch on="selection">
        <div class="animate-switch" ng-switch-when="settings">Settings Div</div>
        <div class="animate-switch" ng-switch-when="home">Home Span</div>
        <div class="animate-switch" ng-switch-default>default</div>
    </div>
  </div>
</script>
</div>
<div class="tab-pane" title="animations.css">
<pre class="prettyprint linenums" ng-set-text="animations.css"></pre>
<style type="text/css" id="animations.css">
  .animate-switch-container {
    position:relative;
    background:white;
    border:1px solid black;
    height:40px;
    overflow:hidden;
  }

  .animate-switch {
    padding:10px;
  }

  .animate-switch.ng-animate {
    -webkit-transition:all cubic-bezier(0.250, 0.460, 0.450, 0.940) 0.5s;
    transition:all cubic-bezier(0.250, 0.460, 0.450, 0.940) 0.5s;

    position:absolute;
    top:0;
    left:0;
    right:0;
    bottom:0;
  }

  .animate-switch.ng-leave.ng-leave-active,
  .animate-switch.ng-enter {
    top:-50px;
  }
  .animate-switch.ng-leave,
  .animate-switch.ng-enter.ng-enter-active {
    top:0;
  }
</style>
</div>
<div class="tab-pane" title="script.js">
<pre class="prettyprint linenums" ng-set-text="script.js-120"></pre>
<script type="text/ng-template" id="script.js-120">
  function Ctrl($scope) {
    $scope.items = ['settings', 'home', 'other'];
    $scope.selection = $scope.items[0];
  }
</script>
</div>
<div class="tab-pane" title="ngScenario e2e test">
<pre class="prettyprint linenums" ng-set-text="scenario.js-121"></pre>
<script type="text/ng-template" id="scenario.js-121">
  it('should start in settings', function() {
    expect(element('.doc-example-live [ng-switch]').text()).toMatch(/Settings Div/);
  });
  it('should change to home', function() {
    select('selection').option('home');
    expect(element('.doc-example-live [ng-switch]').text()).toMatch(/Home Span/);
  });
  it('should select default', function() {
    select('selection').option('other');
    expect(element('.doc-example-live [ng-switch]').text()).toMatch(/default/);
  });
</script>
</div>
</div><div class="pull-right"> <button class="btn btn-primary" ng-click="animationsOff=true" ng-hide="animationsOff">Animations on</button> <button class="btn btn-primary disabled" ng-click="animationsOff=false" ng-show="animationsOff">Animations off</button></div><h4 id="example_demo">Demo</h4>
<div class="well doc-example-live animate-container" ng-class="{'animations-off':animationsOff == true}" ng-embed-app="" ng-set-html="index.html-119" ng-eval-javascript="script.js-120"></div>
</div></div>
</div>