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This file is part of Moodle - http:\/\/moodle.org\/\n\/\/\n\/\/ Moodle is free software: you can redistribute it and\/or modify\n\/\/ it under the terms of the GNU General Public License as published by\n\/\/ the Free Software Foundation, either version 3 of the License, or\n\/\/ (at your option) any later version.\n\/\/\n\/\/ Moodle is distributed in the hope that it will be useful,\n\/\/ but WITHOUT ANY WARRANTY; without even the implied warranty of\n\/\/ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n\/\/ GNU General Public License for more details.\n\/\/\n\/\/ You should have received a copy of the GNU General Public License\n\/\/ along with Moodle.  If not, see <http:\/\/www.gnu.org\/licenses\/>.\n\n\/**\n * Contain the logic for a drawer.\n *\n * @package    theme_boost\n * @copyright  2016 Damyon Wiese\n * @license    http:\/\/www.gnu.org\/copyleft\/gpl.html GNU GPL v3 or later\n *\/\ndefine(['jquery', 'core\/custom_interaction_events', 'core\/log', 'core\/pubsub'],\n     function($, CustomEvents, Log, PubSub) {\n\n    var SELECTORS = {\n        TOGGLE_REGION: '[data-region=\"drawer-toggle\"]',\n        TOGGLE_ACTION: '[data-action=\"toggle-drawer\"]',\n        TOGGLE_TARGET: 'aria-controls',\n        TOGGLE_SIDE: 'left',\n        BODY: 'body',\n        SECTION: '.list-group-item[href*=\"#section-\"]',\n        DRAWER: '#nav-drawer'\n    };\n\n    var small = $(document).width() < 768;\n\n    \/**\n     * Constructor for the Drawer.\n     *\n     * @param {object} root The root jQuery element for the modal\n     *\/\n    var Drawer = function() {\n\n        if (!$(SELECTORS.TOGGLE_REGION).length) {\n            Log.debug('Page is missing a drawer region');\n        }\n        if (!$(SELECTORS.TOGGLE_ACTION).length) {\n            Log.debug('Page is missing a drawer toggle link');\n        }\n        $(SELECTORS.TOGGLE_REGION).each(function(index, ele) {\n            var trigger = $(ele).find(SELECTORS.TOGGLE_ACTION);\n            var drawerid = trigger.attr('aria-controls');\n            var drawer = $(document.getElementById(drawerid));\n            var hidden = trigger.attr('aria-expanded') == 'false';\n            var side = trigger.attr('data-side');\n            var body = $(SELECTORS.BODY);\n            var preference = trigger.attr('data-preference');\n            if (small) {\n                M.util.set_user_preference(preference, 'false');\n            }\n\n            drawer.on('mousewheel DOMMouseScroll', this.preventPageScroll);\n\n            if (!hidden) {\n                body.addClass('drawer-open-' + side);\n                trigger.attr('aria-expanded', 'true');\n            } else {\n                trigger.attr('aria-expanded', 'false');\n            }\n        }.bind(this));\n\n        this.registerEventListeners();\n        if (small) {\n            this.closeAll();\n        }\n    };\n\n    Drawer.prototype.closeAll = function() {\n        $(SELECTORS.TOGGLE_REGION).each(function(index, ele) {\n            var trigger = $(ele).find(SELECTORS.TOGGLE_ACTION);\n            var side = trigger.attr('data-side');\n            var body = $(SELECTORS.BODY);\n            var drawerid = trigger.attr('aria-controls');\n            var drawer = $(document.getElementById(drawerid));\n            var preference = trigger.attr('data-preference');\n\n            trigger.attr('aria-expanded', 'false');\n            body.removeClass('drawer-open-' + side);\n            drawer.attr('aria-hidden', 'true');\n            drawer.addClass('closed');\n            if (!small) {\n                M.util.set_user_preference(preference, 'false');\n            }\n        });\n    };\n\n    \/**\n     * Open \/ close the blocks drawer.\n     *\n     * @method toggleDrawer\n     * @param {Event} e\n     *\/\n    Drawer.prototype.toggleDrawer = function(e) {\n        var trigger = $(e.target).closest('[data-action=toggle-drawer]');\n        var drawerid = trigger.attr('aria-controls');\n        var drawer = $(document.getElementById(drawerid));\n        var body = $(SELECTORS.BODY);\n        var side = trigger.attr('data-side');\n        var preference = trigger.attr('data-preference');\n        if (small) {\n            M.util.set_user_preference(preference, 'false');\n        }\n\n        body.addClass('drawer-ease');\n        var open = trigger.attr('aria-expanded') == 'true';\n        if (!open) {\n            \/\/ Open.\n            trigger.attr('aria-expanded', 'true');\n            drawer.attr('aria-hidden', 'false');\n            drawer.focus();\n            body.addClass('drawer-open-' + side);\n            drawer.removeClass('closed');\n            if (!small) {\n                M.util.set_user_preference(preference, 'true');\n            }\n        } else {\n            \/\/ Close.\n            body.removeClass('drawer-open-' + side);\n            trigger.attr('aria-expanded', 'false');\n            drawer.addClass('closed').delay(500).queue(function() {\n                \/\/ Ensure that during the delay, the drawer wasn't re-opened.\n                if ($(this).hasClass('closed')) {\n                    $(this).attr('aria-hidden', 'true');\n                }\n                $(this).dequeue();\n            });\n            if (!small) {\n                M.util.set_user_preference(preference, 'false');\n            }\n        }\n\n        \/\/ Publish an event to tell everything that the drawer has been toggled.\n        \/\/ The drawer transitions closed so another event will fire once teh transition\n        \/\/ has completed.\n        PubSub.publish('nav-drawer-toggle-start', open);\n    };\n\n    \/**\n     * Prevent the page from scrolling when the drawer is at max scroll.\n     *\n     * @method preventPageScroll\n     * @param  {Event} e\n     *\/\n    Drawer.prototype.preventPageScroll = function(e) {\n        var delta = e.wheelDelta || (e.originalEvent && e.originalEvent.wheelDelta) || -e.originalEvent.detail,\n            bottomOverflow = (this.scrollTop + $(this).outerHeight() - this.scrollHeight) >= 0,\n            topOverflow = this.scrollTop <= 0;\n\n        if ((delta < 0 && bottomOverflow) || (delta > 0 && topOverflow)) {\n            e.preventDefault();\n        }\n    };\n\n    \/**\n     * Set up all of the event handling for the modal.\n     *\n     * @method registerEventListeners\n     *\/\n    Drawer.prototype.registerEventListeners = function() {\n\n        $(SELECTORS.TOGGLE_ACTION).each(function(index, element) {\n            CustomEvents.define($(element), [CustomEvents.events.activate]);\n            $(element).on(CustomEvents.events.activate, function(e, data) {\n                this.toggleDrawer(data.originalEvent);\n                data.originalEvent.preventDefault();\n            }.bind(this));\n        }.bind(this));\n\n        $(SELECTORS.SECTION).click(function() {\n            if (small) {\n                this.closeAll();\n            }\n        }.bind(this));\n\n        \/\/ Publish an event to tell everything that the drawer completed the transition\n        \/\/ to either an open or closed state.\n        $(SELECTORS.DRAWER).on('webkitTransitionEnd msTransitionEnd transitionend', function(e) {\n            var drawer = $(e.target).closest(SELECTORS.DRAWER);\n            var open = drawer.attr('aria-hidden') == 'false';\n            PubSub.publish('nav-drawer-toggle-end', open);\n        });\n    };\n\n    return {\n        'init': function() {\n            return new Drawer();\n        }\n    };\n});\n"],"file":"drawer.min.js"}