diff --git a/assets/ik_treemenu.js b/assets/ik_treemenu.js new file mode 100644 index 000000000..51b4d080e --- /dev/null +++ b/assets/ik_treemenu.js @@ -0,0 +1,196 @@ +;(function ( $, window, document, undefined ) { + + var pluginName = 'ik_treemenu', + defaults = { + 'menuTitle': 'Breakfast Menu', + 'expandAll': true + }; + + /** + * @constructs Plugin + * @param {Object} element - Current DOM element from selected collection. + * @param {Object} [options] - Configuration options. + * @param {number} [options.menuTitle] - Menu title appers above the tree. + * @param {number} [options.expandAll] - Expands all tree branches when true. + */ + function Plugin( element, options ) { + + this._name = pluginName; + this._defaults = defaults; + this.element = $(element); + this.options = $.extend( {}, defaults, options) ; + + this.init(); + } + + /** Initializes plugin. */ + Plugin.prototype.init = function () { + + var id, $elem, plugin; + + plugin = this; + $elem = plugin.element; + id = 'tree' + $('.ik_treemenu').length; // create unique id + + $elem.addClass('ik_treemenu'); + + $('
') // add div element to be used with aria-labelledby attribute of the menu + .text(plugin.options.instructions) // get instruction text from plugin options + .addClass('ik_readersonly') // hide element from visual display + .attr({ + 'id': id + '_instructions', + }) + .appendTo($elem); + + $('
') // add menu title + .addClass('title') + .text( this.options.menuTitle ) + .attr({ + 'id': id + '_title' + }) + .prependTo($elem); + + $elem + .find('ul:first') // set topmost ul element as a tree container + .attr({ + 'id': id + }); + + $elem // set all li elements as tree folders and items + .find('li') + .css({ 'list-style': 'none' }) + .each(function(i, el) { + + var $me; + + $me = $(el); + + $me.attr({ + 'id': id + '_menuitem_' + i + }); + + $($me.contents()[0]).wrap(''); // wrap text element of each treitem with span element + + if ($me.children('ul').length) { // if the current treeitem has submenu + + if (plugin.options.expandAll) { // expand or collapse all tree levels based on configuration + // don't do anything + } else { + $me.addClass('collapsed'); + } + + $me + .children('span') + .addClass('folder') + ; + + } else { + + //aria-selected goes here + + } + + }) + .on('click', {'plugin': plugin}, plugin.onClick); + + }; + + /** + * Selects treeitem. + * + * @param {object} $item - jQuery object containing treeitem to select. + * @param {object} plugin - reference to plugin. + */ + Plugin.prototype.selectItem = function($item, plugin) { + var $elem = plugin.element; + + $elem.find('.focused') // remove highlight form previousely selected treeitem + .removeClass('focused'); + + if ($item.children('ul').length) { // highlight selected treeitem + $item.children('span').addClass('focused'); + } else { + $item.addClass('focused'); + } + + $item.focus(); + }; + + /** + * Toggles submenu. + * + * @param {object} $item - jQuery object containing treeitem with submenu. + */ + Plugin.prototype.toggleSubmenu = function($item) { + + if($item.children('ul').length) { // check if the treeitem contains submenu + + if ($item.hasClass('collapsed')) { // expand if collapsed + + $item.removeClass('collapsed'); + + } else { // otherwise collapse + + $item.addClass('collapsed'); + + } + + } + } + + /** + * Handles mouseover event on header button. + * + * @param {Object} event - Event object. + * @param {object} event.data - Event data. + * @param {object} event.data.plugin - Reference to plugin. + */ + Plugin.prototype.onMouseOver = function (event) { + + var plugin = event.data.plugin, + $me = $(event.currentTarget); + + event.stopPropagation(); + + plugin.element // remove highlight form previous treeitem + .find('.mouseover') + .removeClass('mouseover'); + + $me.children('span') // add highlight to currently selected treeitem + .addClass('mouseover'); + + } + + /** + * Handles click event on header button. + * + * @param {Object} event - Event object. + * @param {object} event.data - Event data. + * @param {object} event.data.plugin - Reference to plugin. + */ + Plugin.prototype.onClick = function (event) { + + var plugin = event.data.plugin, + $me = $(event.currentTarget); + + event.preventDefault(); + event.stopPropagation(); + + plugin.toggleSubmenu($me); + plugin.selectItem($me, plugin); + }; + + $.fn[pluginName] = function ( options ) { + + return this.each(function () { + + if ( !$.data(this, pluginName )) { + $.data( this, pluginName, + new Plugin( this, options )); + } + + }); + + } + +})( jQuery, window, document ); \ No newline at end of file diff --git a/tree.html b/tree.html new file mode 100644 index 000000000..b5b9ac436 --- /dev/null +++ b/tree.html @@ -0,0 +1,60 @@ + + + + + + IK Library: Tree Menu + + + + + + + +
+ ← Index +

Tree Menu

+
+ +
+

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