Knockout (2.3+) binding for clamp

clamp.js

define(['knockout', 'clamp'], function(ko, $clamp) {

    'use strict';

    var textKey = 'originalClampText';

    ko.bindingHandlers.clamp = {
        update: function(element, valueAccessor, allBindings) {
            
            var defaultText;

            // Deal with differences in API from 2.3 - 3.0+
            if (typeof allBindings.get === 'function') {
                defaultText = allBindings.get('text');
            } else {
                defaultText = allBindings().text;
            }

            // Get the text that we want to work on, as $clamp is destructive
            // we have to fix the element before we call it for when the
            // binding changes.
            var text = defaultText ||
                ko.utils.domData.get(element, textKey) ||
                element.innerHTML;

            // Store the text againt the dom element in case we're not using
            // an observable
            ko.utils.domData.set(element, textKey, text);

            // Fix the element to use the full text, rather than the clamped
            // text
            element.innerHTML = text;

            $clamp(element, { clamp : ko.unwrap(valueAccessor()) });
        }
    };
});