/* Vertical News Ticker 1.21 Original by: Tadas Juozapaitis ( kasp3rito [eta] gmail (dot) com ) https://github.com/kasp3r/vTicker Forked/Modified by: Richard Hollis @richhollis - richhollis.co.uk */ (function($) { var defaults, internal, methods; defaults = { speed: 700, pause: 4000, showItems: 1, mousePause: true, height: 0, animate: true, margin: 0, padding: 0, startPaused: false, autoAppend: true }; internal = { moveUp: function(state, attribs) { return internal.showNextItem(state, attribs, 'up'); }, moveDown: function(state, attribs) { return internal.showNextItem(state, attribs, 'down'); }, nextItemState: function(state, dir) { var height, obj; obj = state.element.children('ul'); height = state.itemHeight; if (state.options.height > 0) { height = obj.children('li:first').height(); } height += state.options.margin + state.options.padding * 2; return { height: height, options: state.options, el: state.element, obj: obj, selector: dir === 'up' ? 'li:first' : 'li:last', dir: dir }; }, showNextItem: function(state, attribs, dir) { var clone, nis; nis = internal.nextItemState(state, dir); nis.el.trigger('vticker.beforeTick'); clone = nis.obj.children(nis.selector).clone(true); if (nis.dir === 'down') { nis.obj.css('top', '-' + nis.height + 'px').prepend(clone); } if (attribs && attribs.animate) { if (!state.animating) { internal.animateNextItem(nis, state); } } else { internal.nonAnimatedNextItem(nis); } if (nis.dir === 'up' && state.options.autoAppend) { clone.appendTo(nis.obj); } return nis.el.trigger('vticker.afterTick'); }, animateNextItem: function(nis, state) { var opts; state.animating = true; opts = nis.dir === 'up' ? { top: '-=' + nis.height + 'px' } : { top: 0 }; return nis.obj.animate(opts, state.options.speed, function() { $(nis.obj).children(nis.selector).remove(); $(nis.obj).css('top', '0px'); return state.animating = false; }); }, nonAnimatedNextItem: function(nis) { nis.obj.children(nis.selector).remove(); return nis.obj.css('top', '0px'); }, nextUsePause: function() { var options, state; state = $(this).data('state'); options = state.options; if (state.isPaused || internal.hasSingleItem(state)) { return; } return methods.next.call(this, { animate: options.animate }); }, startInterval: function() { var options, state; state = $(this).data('state'); options = state.options; return state.intervalId = setInterval((function(_this) { return function() { return internal.nextUsePause.call(_this); }; })(this), options.pause); }, stopInterval: function() { var state; if (!(state = $(this).data('state'))) { return; } if (state.intervalId) { clearInterval(state.intervalId); } return state.intervalId = void 0; }, restartInterval: function() { internal.stopInterval.call(this); return internal.startInterval.call(this); }, getState: function(from, elem) { var state; if (!(state = $(elem).data('state'))) { throw new Error("vTicker: No state available from " + from); } return state; }, isAnimatingOrSingleItem: function(state) { return state.animating || this.hasSingleItem(state); }, hasMultipleItems: function(state) { return state.itemCount > 1; }, hasSingleItem: function(state) { return !internal.hasMultipleItems(state); }, bindMousePausing: (function(_this) { return function(el, state) { return el.bind('mouseenter', function() { if (state.isPaused) { return; } state.pausedByCode = true; internal.stopInterval.call(this); return methods.pause.call(this, true); }).bind('mouseleave', function() { if (state.isPaused && !state.pausedByCode) { return; } state.pausedByCode = false; methods.pause.call(this, false); return internal.startInterval.call(this); }); }; })(this), setItemLayout: function(el, state, options) { var box; el.css({ overflow: 'hidden', position: 'relative' }).children('ul').css({ position: 'absolute', margin: 0, padding: 0 }).children('li').css({ margin: options.margin, padding: options.padding }); if (isNaN(options.height) || options.height === 0) { el.children('ul').children('li').each(function() { if ($(this).height() > state.itemHeight) { return state.itemHeight = $(this).height(); } }); el.children('ul').children('li').each(function() { return $(this).height(state.itemHeight); }); box = options.margin + options.padding * 2; return el.height((state.itemHeight + box) * options.showItems + options.margin); } else { return el.height(options.height); } }, defaultStateAttribs: function(el, options) { return { itemCount: el.children('ul').children('li').length, itemHeight: 0, itemMargin: 0, element: el, animating: false, options: options, isPaused: options.startPaused, pausedByCode: false }; } }; methods = { init: function(options) { var clonedDefaults, el, state; if (state = $(this).data('state')) { methods.stop.call(this); } state = null; clonedDefaults = jQuery.extend({}, defaults); options = $.extend(clonedDefaults, options); el = $(this); state = internal.defaultStateAttribs(el, options); $(this).data('state', state); internal.setItemLayout(el, state, options); if (!options.startPaused) { internal.startInterval.call(this); } if (options.mousePause) { return internal.bindMousePausing(el, state); } }, pause: function(pauseState) { var el, state; state = internal.getState('pause', this); if (!internal.hasMultipleItems(state)) { return false; } state.isPaused = pauseState; el = state.element; if (pauseState) { $(this).addClass('paused'); return el.trigger('vticker.pause'); } else { $(this).removeClass('paused'); return el.trigger('vticker.resume'); } }, next: function(attribs) { var state; state = internal.getState('next', this); if (internal.isAnimatingOrSingleItem(state)) { return false; } internal.restartInterval.call(this); return internal.moveUp(state, attribs); }, prev: function(attribs) { var state; state = internal.getState('prev', this); if (internal.isAnimatingOrSingleItem(state)) { return false; } internal.restartInterval.call(this); return internal.moveDown(state, attribs); }, stop: function() { var state; state = internal.getState('stop', this); return internal.stopInterval.call(this); }, remove: function() { var el, state; state = internal.getState('remove', this); internal.stopInterval.call(this); el = state.element; el.unbind(); return el.remove(); } }; return $.fn.vTicker = function(method) { if (methods[method]) { return methods[method].apply(this, Array.prototype.slice.call(arguments, 1)); } if (typeof method === 'object' || !method) { return methods.init.apply(this, arguments); } return $.error('Method ' + method + ' does not exist on jQuery.vTicker'); }; })(jQuery);

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