If I have this code:
<accordion-group heading="{{group.title}}" ng-repeat="group in groups">
{{group.content}}
</accordion-group>
Using AngularJS, angular-ui and Twitter Bootstrap, is it possible to make the accordion call some action when opened? I know I can't simply add ng-click, because that is already used after it's "compiled" to HTML for opening/collapsing of the group.
Accordion groups also allow for an accordion-heading directive instead of providing it as an attribute. You can use that and then wrap your header in another tag with an ng-click.
<accordion-group ng-repeat="group in groups" heading="{{group.title}}" is-open="group.open">
<accordion-heading>
<span ng-click="opened(group, $index)">{{group.content}}</span>
</accordion-heading>
</accordion-group>
Here's a solution based on pkozlowski.opensource solution.
Instead of adding a $watch on each item of the collection, you can use a dynamically defined Property. Here, you can bind the IsOpened property of the group to the is-open attribute.
<accordion-group ng-repeat="group in groups" heading="{{group.title}}" is-open="group.IsOpened">
{{group.content}}
</accordion-group>
So, you can dynamically add the IsOpened property on each item of the collection in the controller :
$scope.groups.forEach(function(item) {
var isOpened = false;
Object.defineProperty(item, "IsOpened", {
get: function() {
return isOpened;
},
set: function(newValue) {
isOpened = newValue;
if (isOpened) {
console.log(item); // do something...
}
}
});
});
Using properties instead of watches is better for performances.
There is the is-open attribute on the accordion-group which points to a bindable expression. You could watch this expression and execute some logic when a given accordion group is open. Using this technique you would change your markup to:
<accordion-group ng-repeat="group in groups" heading="{{group.title}}" is-open="group.open">
{{group.content}}
</accordion-group>
so that you can, in the controller, prepare a desired watch expression:
$scope.$watch('groups[0].open', function(isOpen){
if (isOpen) {
console.log('First group was opened');
}
});
While the above works it might be a bit cumbersome to use in practice so if you feel like this could be improved open an issue in https://github.com/angular-ui/bootstrap
Here's a solution inspired by kjv's answer, which easily tracks which accordion element is open. I found difficult getting ng-click to work on the accordion heading, though surrounding the element in a <span> tag and adding the ng-click to that worked fine.
Another problem I encountered was, although the accordion elements were added to the page programmatically, the content was not. When I tried loading the content using Angular directives(ie. {{path}}) linked to a $scope variable I would be hit with undefined, hence the use of the bellow method which populates the accordion content using the ID div embedded within.
Controller:
//initialise the open state to false
$scope.routeDescriptors[index].openState == false
function opened(index)
{
//we need to track what state the accordion is in
if ($scope.routeDescriptors[index].openState == true){ //close an accordion
$scope.routeDescriptors[index].openState == false
} else { //open an accordion
//if the user clicks on another accordion element
//then the open element will be closed, so this will handle it
if (typeof $scope.previousAccordionIndex !== 'undefined') {
$scope.routeDescriptors[$scope.previousAccordionIndex].openState = false;
}
$scope.previousAccordionIndex = index;
$scope.routeDescriptors[index].openState = true;
}
function populateDiv(id)
{
for (var x = 0; x < $scope.routeDescriptors.length; x++)
{
$("#_x" + x).html($scope.routeDescriptors[x]);
}
}
HTML:
<div ng-hide="hideDescriptions" class="ng-hide" id="accordionrouteinfo" ng-click="populateDiv()">
<accordion>
<accordion-group ng-repeat="path in routeDescriptors track by $index">
<accordion-heading>
<span ng-click="opened($index)">route {{$index}}</span>
</accordion-heading>
<!-- Notice these divs are given an ID which corresponds to it's index-->
<div id="_x{{$index}}"></div>
</accordion-group>
</accordion>
</div>
I used an associative array to create a relationship between the opened state and the model object.
The HTML is:
<div ng-controller="CaseController as controller">
<accordion close-others="controller.model.closeOthers">
<accordion-group ng-repeat="topic in controller.model.topics track by topic.id" is-open="controller.model.opened[topic.id]">
<accordion-heading>
<h4 class="panel-title clearfix" ng-click="controller.expand(topic)">
<span class="pull-left">{{topic.title}}</span>
<span class="pull-right">Updated: {{topic.updatedDate}}</span>
</h4>
</accordion-heading>
<div class="panel-body">
<div class="btn-group margin-top-10">
<button type="button" class="btn btn-default" ng-click="controller.createComment(topic)">Add Comment<i class="fa fa-plus"></i></button>
</div>
<div class="btn-group margin-top-10">
<button type="button" class="btn btn-default" ng-click="controller.editTopic(topic)">Edit Topic<i class="fa fa-pencil-square-o"></i></button>
</div>
<h4>Topic Description</h4>
<p><strong>{{topic.description}}</strong></p>
<ul class="list-group">
<li class="list-group-item" ng-repeat="comment in topic.comments track by comment.id">
<h5>Comment by: {{comment.author}}<span class="pull-right">Updated: <span class="commentDate">{{comment.updatedDate}}</span> | <span class="commentTime">{{comment.updatedTime}}</span></span></h5>
<p>{{comment.comment}}</p>
<div class="btn-group">
<button type="button" class="btn btn-default btn-xs" ng-click="controller.editComment(topic, comment)">Edit <i class="fa fa-pencil-square-o"></i></button>
<button type="button" class="btn btn-default btn-xs" ng-click="controller.deleteComment(comment)">Delete <i class="fa fa-trash-o"></i></button>
</div>
</li>
</ul>
</div>
</accordion-group>
</accordion>
The controller snippet is:
self.model = {
closeOthers : false,
opened : new Array(),
topics : undefined
};
The 'topics' are populated on an AJAX call. Separating the 'opened' state from the model objects that are updated from the server means the state is preserved across refreshes.
I also declare the controller with ng-controller="CaseController as controller"
accordion-controller.js
MyApp.Controllers
.controller('AccordionCtrl', ['$scope', function ($scope) {
$scope.groups = [
{
title: "Dynamic Group Header - 1",
content: "Dynamic Group Body - 1",
open: false
},
{
title: "Dynamic Group Header - 2",
content: "Dynamic Group Body - 2",
open: false
},
{
title: "Dynamic Group Header - 3",
content: "Dynamic Group Body - 3",
open: false
}
];
/**
* Open panel method
* @param idx {Number} - Array index
*/
$scope.openPanel = function (idx) {
if (!$scope.groups[idx].open) {
console.log("Opened group with idx: " + idx);
$scope.groups[idx].open = true;
}
};
/**
* Close panel method
* @param idx {Number} - Array index
*/
$scope.closePanel = function (idx) {
if ($scope.groups[idx].open) {
console.log("Closed group with idx: " + idx);
$scope.groups[idx].open = false;
}
};
}]);
index.html
<div ng-controller="AccordionCtrl">
<accordion>
<accordion-group ng-repeat="group in groups" is-open="group.open">
<button ng-click="closePanel($index)">Close me</button>
{{group.content}}
</accordion-group>
<button ng-click="openPanel(0)">Set 1</button>
<button ng-click="openPanel(1)">Set 2</button>
<button ng-click="openPanel(2)">Set 3</button>
</accordion>
</div>
You can do it w/ an Angular directive:
<div uib-accordion-group is-open="property.display_detail" ng-repeat="property in properties">
<div uib-accordion-heading ng-click="property.display_detail = ! property.display_detail">
some heading text
</div>
<!-- here is the accordion body -->
<div ng-init="i=$index"> <!-- I keep track of the index of ng-repeat -->
<!-- and I call a custom directive -->
<mydirective mydirective_model="properties" mydirective_index="{% verbatim ng %}{{ i }}{% endverbatim ng %}">
here is the body
</mydirective>
</div>
</div>
app.directive("mydirective", function() {
return {
restrict: "EAC",
link: function(scope, element, attrs) {
/* note that ng converts everything to camelCase */
var model = attrs["mydirectiveModel"];
var index = attrs["mydirectiveIndex"];
var watched_name = model + "[" + index + "].display_detail"
scope.$watch(watched_name, function(is_displayed) {
if (is_displayed) {
alert("you opened something");
}
else {
alert("you closed something");
}
});
}
}
});
There are some idiosyncrasies about my setup there (I use Django, hence the "{% verbatim %}" tags), but the method should work.
