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JavaScript Helpers

Useful javascript functions and classes. The main helper is fw, an object containing constants, methods and classes. To use these helpers, add fw to your script dependencies:

wp_register_script(..., ..., array('fw'));

General

General javaScript helpers:

  • fw.FW_URI - URI to the framework directory.

  • fw.SITE_URI - URI to the site root directory.

  • fw.intval(value) - alternative to php intval(). Returns 0 on failure, instead of NaN like parseInt() does.

  • fw.md5(string) - calculate md5 hash of the string.

  • fw.loading - show loading on the page.

    Tip

    Useful when doing AJAX requests and want to inform your users about that.

    fw.loading.show();
    
    setTimeout(function(){
        fw.loading.hide();
    }, 3000);
    

    The show() and hide() methods can be called multiple times. If show() is called 10 times, then hide() should be called 10 times for loading to disappear. This is done for cases when this helper is used by multiple asynchronous scripts, the loading should not disappear until all scripts complete the work.

  • fw.capitalizeFirstLetter(text) - capitalizes the first letter of a string.

  • fw.ops(properties, value, obj, delimiter) - same as fw_aks(...) from PHP Helpers, but for javascript objects.

    var obj = {foo: {}};
    
    fw.ops('foo/bar', 'demo', obj);
    
    console.log(obj); // {foo: {bar: 'demo'}}
    
  • fw.opg(properties, obj, defaultValue, delimiter) - same as fw_akg(...) from PHP Helpers, but for javascript objects.

    var obj = {foo: {bar: 'hello'}};
    
    console.log( fw.opg('foo/bar', obj) ); // 'hello'
    
  • fw.randomMD5() - generate random md5.

Options Modal

Modal with options. Display html generated from a given options array. After the user completes the form and presses “Save”, values are available as a javascript object.

var modal = new fw.OptionsModal({
    title: 'Custom Title',
    options: [
        {'test_1': {
            'type': 'text',
            'label': 'Test1'
        }},
        {'test_2': {
            'type': 'textarea',
            'label': 'Test2'
        }}
    ],
    values: {
        'test_1': 'Default 1',
        'test_2': 'Default 2'
    },
    size: 'small' // 'medium', 'large'
});

// listen for values change
modal.on('change:values', function(modal, values) {
    console.log(values);
});

// replace values
modal.set('values', {
    'test_1': 'Custom 1',
    'test_2': 'Custom 2'
});

modal.open();

Note

Make sure to enqueue scripts and styles for the options you use in modal. Usually it is done before page is displayed.

fw()->backend->enqueue_options_static($modal_options);

Confirmation

General purpose confirmation mechanism that operates with jQuery.Deferred.

var confirm = fw.soleConfirm.create({
  severity: 'info', // warning | info
  message: 'Some message to display', // or null, if you don't want any
  backdrop: null // null | false | true
});

confirm.result; // Instance of jQuery.Deferred factory

confirm.result.then(function (confirm_instance) {
  // confirm_instance is same as confirm

  // Handle success branch
});

confirm.result.fail(function (confirm_instance) {
  // Handle fail branch
});

confirm.show();

Queueing confirms

Confirm is actually using fw.soleModal under the hood, which is queued one after the other.

var confirm1 = fw.soleConfirm.create();
var confirm2 = fw.soleConfirm.create();

confirm1.show();
confirm2.show();

confirm1.hide(); // That's when the confirm2 will actually pop in, results are buffered

Same confirm multiple times

Because of the way jQuery.Deferred works, one single confirm instance will resolve it’s promise exactly one time. If you really need to use the same confirm once again - just reset it.

var confirm = fw.soleConfirm.create();

confirm.result.then(function () {
  // handle success
  // will be triggered just once
});

confirm.show();

// ...
// after the user takes his choice
// ...

confirm.show(); // will throw an error!
confirm.reset();

// you'll have to attach your listeners once again, the old one
// will already not be around
confirm.result.then(function () {
  // one more handler
});

confirm.show(); // will work just fine

Events

fwEvents is a global object on which you can trigger or listen custom events. This way different scripts can communicate with each other.

// script-1.js

fwEvents.on('script-2:message', function(data){
    console.log('script-1 received a message from script-2: '+ data.message);
});

// script-2.js

fwEvents.trigger('script-2:message', {message: 'Hello World!'});