function LogTracer(module) {

if (Tracer.call(this, module || LogTracer)) {

LogTracer.prototype.init.call(this);

return true;

}

return false;

}

LogTracer.prototype = $.extend(true, Object.create(Tracer.prototype), {

constructor: LogTracer,

init: function () {

this.$wrapper = this.capsule.$wrapper = $('<div class="wrapper">');

this.$container.append(this.$wrapper);

},

_print: function (msg, delay) {

tm.pushStep(this.capsule, {type: 'print', msg: msg}, delay);

return this;

},

processStep: function (step, options) {

switch (step.type) {

case 'print':

this.print(step.msg);

break;

}

},

refresh: function () {

this.scrollToEnd(Math.min(50, this.interval));

},

clear: function () {

Tracer.prototype.clear.call(this);

this.$wrapper.empty();

},

print: function (message) {

this.$wrapper.append($('<span>').append(message + '<br/>'));

},

scrollToEnd: function (duration) {

this.$container.animate({scrollTop: this.$container[0].scrollHeight}, duration);

}

});