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extjsextjs4

ExtJS - How to highlight dom element permanently?


I want to highlight a dom element permanently using Ext JS.

Here is the common usage of Ext.dom.Element.highlight function:

field.getEl().highlight('#fbac3d', {
    attr: "backgroundColor",
    endColor: "#ffffff",
    easing: 'easeIn',
    duration: 4000
});

Easing is ok but I want the it to be ended with the endColor.


Solution

  • You can have afteranimate listener event and set the backgroundColor.

    field.getEl().highlight('#fbac3d', {
    attr: "backgroundColor",
    endColor: "#ffffff",
    easing: 'easeIn',
    duration: 4000,
    listerners: {
        afteranimate: function() {
          // here you can set style attributes to your field
        }
    }
    });
    

    or, you can override the highlight method, if you want to make this functionality universe.

    Ext.dom.Element.override({
            highlight: function(color, o) {
            var me = this,
                dom = me.dom,
                from = {},
                restore, to, attr, lns, event, fn;
    
            o = o || {};
            lns = o.listeners || {};
            attr = o.attr || 'backgroundColor';
            from[attr] = color || 'ffff9c';
    
            if (!o.to) {
                to = {};
                to[attr] = o.endColor || me.getColor(attr, 'ffffff', '');
            }
            else {
                to = o.to;
            }
    
            // Don't apply directly on lns, since we reference it in our own callbacks below
            o.listeners = Ext.apply(Ext.apply({}, lns), {
                beforeanimate: function() {
                    restore = dom.style[attr];
                    var el = Ext.fly(dom, '_anim');
                    el.clearOpacity();
                    el.show();
    
                    event = lns.beforeanimate;
                    if (event) {
                        fn = event.fn || event;
                        return fn.apply(event.scope || lns.scope || WIN, arguments);
                    }
                },
                afteranimate: function() {
                    //Commented this , here it restores background color
                    //if (dom) {
                    //    dom.style[attr] = restore;
                    //}
    
                    event = lns.afteranimate;
                    if (event) {
                        fn = event.fn || event;
                        fn.apply(event.scope || lns.scope || WIN, arguments);
                    }
                }
            });
    
            me.animate(Ext.apply({}, o, {
                duration: 1000,
                easing: 'ease-in',
                from: from,
                to: to
            }));
            return me;
            }
        });
    

    Example Fiddle: https://fiddle.sencha.com/#fiddle/11mo