Is it possible to make this functionality Angular-friendly?

I am in the process of transforming a Bootstrap + jQuery theme into Angular JS, and I am encountering some challenges along the way. One issue is related to the functionality provided in the JS file of the theme:

/* Sidebar Navigation functionality */
var handleNav = function() {

    // Animation Speed, adjust values for different results
    var upSpeed     = 250;
    var downSpeed   = 250;

    // Obtain all crucial links
    var allTopLinks     = $('.sidebar-nav a');
    var menuLinks       = $('.sidebar-nav-menu');
    var submenuLinks    = $('.sidebar-nav-submenu');

    // Primary Accordion functionality
    menuLinks.click(function(){
        var link = $(this);

        if (link.parent().hasClass('active') !== true) {
            // Logic for opening/closing menus
            if (link.hasClass('open')) {
                link.removeClass('open').next().slideUp(upSpeed);

                // Adjust #page-content size if needed
                setTimeout(resizePageContent, upSpeed);
            }
            else {
                $('.sidebar-nav-menu.open').removeClass('open').next().slideUp(upSpeed);
                link.addClass('open').next().slideDown(downSpeed);

                // Adjust #page-content size if needed
                setTimeout(resizePageContent, ((upSpeed > downSpeed) ? upSpeed : downSpeed));
            }
        }

        return false;
    });

    // Submenu Accordion functionality
    submenuLinks.click(function(){
        var link = $(this);

        if (link.parent().hasClass('active') !== true) {
            // Logic for opening/closing submenus
            if (link.hasClass('open')) {
                link.removeClass('open').next().slideUp(upSpeed);

                // Adjust #page-content size if needed
                setTimeout(resizePageContent, upSpeed);
            }
            else {
                link.closest('ul').find('.sidebar-nav-submenu.open').removeClass('open').next().slideUp(upSpeed);
                link.addClass('open').next().slideDown(downSpeed);

                // Adjust #page-content size if needed
                setTimeout(resizePageContent, ((upSpeed > downSpeed) ? upSpeed : downSpeed));
            }
        }

        return false;
    });
};

This function executes when the app initializes and manages the sidebar functionality by attaching event handlers to the sidebar links to enable dropdown effects and resize the main container when necessary.

While this works fine, I am unsure how to make it compatible with AngularJS. Running it on the view loaded event doesn't seem ideal, and using directives is not straightforward due to the complexity of applying it to multiple elements.

Furthermore, it impacts separate elements as it also resizes the main container, triggering functions on other parts of the page.

How can this specific functionality be converted to be compliant with AngularJS?

EDIT: My proposal was to create two directives, menu-link and submenu-link, and apply them to each respective link. However, this approach seems impractical as repeating the directive multiple times would be cumbersome.

Answer №1

Seems like you might be overdoing it... have you checked out http://angular-ui.github.io/bootstrap/? As mentioned in the comment, create a http://plnkr.co to showcase your progress so far and you'll likely find a solution (also, if you use IRC, join the #angularjs room for assistance).

UPDATE

Hello! In response to the comments, no problem, what you're looking to do will probably involve a few different components. You can establish communication between directives through parent-child relationships or by using the "require" property when defining your directive to inject another directive's controller into its link function (refer to the $compile documentation on "require" if interested).

https://docs.angularjs.org/api/ng/service/$compile

https://docs.angularjs.org/guide/directive

There are essentially two other methods to communicate between disparate elements, with my preference being the first approach. Using a service that is injected into both components needing to share information allows for a shared data store and functions for communication. For example, in tracking clicks on a left nav and affecting the right panel, store the necessary information within a service.

The alternative method involves using events with $emit, $on, and $broadcast, which works well for a "widget-like" architecture where widgets emit and respond to events. However, this approach can lead to issues with scope relationships and potential infinite loops of event triggers.

In Angular, apply the directives to the elements they should affect. The directive definition may have a service injected for additional information, or data can be passed through the directive's isolated scope. Create a "view-model" in a service for persistence across controllers.

Here are some examples I've shared: Angular $http vs service vs ngResource

Don't take the above link as an exact match for your situation but as an illustration of how a service can update data used in a view. Update the scope property in the controller to access the data in the view efficiently.

Refer to the script.js for explanations on action at this plunkr link http://plnkr.co/edit/ABQsAxz1bNi34ehmPRsF?p=preview

Note that setting up a watch in a controller to monitor the service, as seen in the last plunkr, is not recommended for testing purposes. Utilize angular.copy instead for better efficiency.

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