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'use strict';
/**
* @ngdoc directive
* @name angular.module.ng.$compileProvider.directive.ng-view
* @restrict ECA
*
* @description
* # Overview
* `ng-view` is a directive that complements the {@link angular.module.ng.$route $route} service by
* including the rendered template of the current route into the main layout (`index.html`) file.
* Every time the current route changes, the included view changes with it according to the
* configuration of the `$route` service.
*
* @scope
* @example
<doc:example module="ngView">
<doc:source>
<script type="text/ng-template" id="examples/book.html">
controller: {{name}}<br />
Book Id: {{params.bookId}}<br />
</script>
<script type="text/ng-template" id="examples/chapter.html">
controller: {{name}}<br />
Book Id: {{params.bookId}}<br />
Chapter Id: {{params.chapterId}}
</script>
<script>
angular.module('ngView', [], function($routeProvider, $locationProvider) {
$routeProvider.when('/Book/:bookId', {
template: 'examples/book.html',
controller: BookCntl
});
$routeProvider.when('/Book/:bookId/ch/:chapterId', {
template: 'examples/chapter.html',
controller: ChapterCntl
});
// configure html5 to get links working on jsfiddle
$locationProvider.html5Mode(true);
});
function MainCntl($scope, $route, $routeParams, $location) {
$scope.$route = $route;
$scope.$location = $location;
$scope.$routeParams = $routeParams;
}
function BookCntl($scope, $routeParams) {
$scope.name = "BookCntl";
$scope.params = $routeParams;
}
function ChapterCntl($scope, $routeParams) {
$scope.name = "ChapterCntl";
$scope.params = $routeParams;
}
</script>
<div ng-controller="MainCntl">
Choose:
<a href="/Book/Moby">Moby</a> |
<a href="/Book/Moby/ch/1">Moby: Ch1</a> |
<a href="/Book/Gatsby">Gatsby</a> |
<a href="/Book/Gatsby/ch/4?key=value">Gatsby: Ch4</a> |
<a href="/Book/Scarlet">Scarlet Letter</a><br/>
<div ng-view></div>
<hr />
<pre>$location.path() = {{$location.path()}}</pre>
<pre>$route.current.template = {{$route.current.template}}</pre>
<pre>$route.current.params = {{$route.current.params}}</pre>
<pre>$route.current.scope.name = {{$route.current.scope.name}}</pre>
<pre>$routeParams = {{$routeParams}}</pre>
</div>
</doc:source>
<doc:scenario>
it('should load and compile correct template', function() {
element('a:contains("Moby: Ch1")').click();
var content = element('.doc-example-live [ng-view]').text();
expect(content).toMatch(/controller\: ChapterCntl/);
expect(content).toMatch(/Book Id\: Moby/);
expect(content).toMatch(/Chapter Id\: 1/);
element('a:contains("Scarlet")').click();
content = element('.doc-example-live [ng-view]').text();
expect(content).toMatch(/controller\: BookCntl/);
expect(content).toMatch(/Book Id\: Scarlet/);
});
</doc:scenario>
</doc:example>
*/
/**
* @ngdoc event
* @name angular.module.ng.$compileProvider.directive.ng-view#$viewContentLoaded
* @eventOf angular.module.ng.$compileProvider.directive.ng-view
* @eventType emit on the current ng-view scope
* @description
* Emitted every time the ng-view content is reloaded.
*/
var ngViewDirective = ['$http', '$templateCache', '$route', '$anchorScroll', '$compile',
'$controller',
function($http, $templateCache, $route, $anchorScroll, $compile,
$controller) {
return {
restrict: 'ECA',
terminal: true,
link: function(scope, element, attr) {
var changeCounter = 0,
lastScope,
onloadExp = attr.onload || '';
scope.$on('$afterRouteChange', function(event, next, previous) {
changeCounter++;
});
scope.$watch(function() {return changeCounter;}, function(newChangeCounter) {
var template = $route.current && $route.current.template;
function destroyLastScope() {
if (lastScope) {
lastScope.$destroy();
lastScope = null;
}
}
function clearContent() {
// ignore callback if another route change occured since
if (newChangeCounter == changeCounter) {
element.html('');
}
destroyLastScope();
}
if (template) {
$http.get(template, {cache: $templateCache}).success(function(response) {
// ignore callback if another route change occured since
if (newChangeCounter == changeCounter) {
element.html(response);
destroyLastScope();
var link = $compile(element.contents()),
current = $route.current;
lastScope = current.scope = scope.$new();
if (current.controller) {
element.contents().
data('$ngControllerController', $controller(current.controller, {$scope: lastScope}));
}
link(lastScope);
lastScope.$emit('$viewContentLoaded');
lastScope.$eval(onloadExp);
// $anchorScroll might listen on event...
$anchorScroll();
}
}).error(clearContent);
} else {
clearContent();
}
});
}
};
}];
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