define(["jquery","core/notification","core/str","core/form-autocomplete","core/ajax","mod_assign/grading_form_change_checker"],function(a,b,c,d,e,f){var g=function(e){this._regionSelector=e,this._region=a(e),this._filters=[],this._users=[],this._filteredUsers=[],this._loadAllUsers(),this._region.find('[data-action="previous-user"]').on("click",this._handlePreviousUser.bind(this)),this._region.find('[data-action="next-user"]').on("click",this._handleNextUser.bind(this)),this._region.find('[data-action="change-user"]').on("change",this._handleChangeUser.bind(this)),this._region.find('[data-region="user-filters"]').on("click",this._toggleExpandFilters.bind(this)),a(document).on("user-changed",this._refreshSelector.bind(this));var f=this._region.find('[data-region="user-filters"]'),g=a(document.getElementById(f.attr("aria-controls")));g.on("change",'[type="checkbox"]',this._filterChanged.bind(this));var h=a('[data-region="grading-navigation-panel"]').data("first-userid");h&&this._selectUserById(h),c.get_string("changeuser","mod_assign").done(function(a){d.enhance("[data-action=change-user]",!1,"mod_assign/participant_selector",a)}).fail(b.exception),a(document).bind("start-loading-user",function(){this._isLoading=!0}.bind(this)),a(document).bind("finish-loading-user",function(){this._isLoading=!1}.bind(this))};return g.prototype._isLoading=!1,g.prototype._regionSelector=null,g.prototype._filters=null,g.prototype._users=null,g.prototype._region=null,g.prototype._loadAllUsers=function(){var a=this._region.find("[data-action=change-user]"),c=a.attr("data-assignmentid"),d=a.attr("data-groupid");e.call([{methodname:"mod_assign_list_participants",args:{assignid:c,groupid:d,filter:"",onlyids:!0},done:this._usersLoaded.bind(this),fail:b.exception}])},g.prototype._usersLoaded=function(b){if(this._filteredUsers=this._users=b,this._users.length){var c=this._region.find('[data-region="user-filters"]'),d=a(document.getElementById(c.attr("aria-controls")));d.find('[type="checkbox"]').trigger("change")}else this._selectNoUser()},g.prototype._checkClickOutsideConfigureFilters=function(b){var c=this._region.find('[data-region="configure-filters"]');if(!c.is(b.target)&&0===c.has(b.target).length){var d=this._region.find('[data-region="user-filters"]');c.hide(),c.attr("aria-hidden","true"),d.attr("aria-expanded","false"),a(document).unbind("click.mod_assign_grading_navigation")}},g.prototype._filterChanged=function(d){var e=a(d.target).attr("name"),f=e.split("_").pop(),g=a(d.target).prop("checked");if(g)this._filters.indexOf(f)==-1&&(this._filters[this._filters.length]=f);else{var h=this._filters.indexOf(f);h!=-1&&this._filters.splice(h,1)}var i=[];this._region.find('[data-region="configure-filters"]').find('[type="checkbox"]').each(function(b,c){a(c).prop("checked")&&(i[i.length]=a(c).closest("label").text())}),i.length?this._region.find('[data-region="user-filters"] span').text(i.join(", ")):c.get_string("nofilters","mod_assign").done(function(a){this._region.find('[data-region="user-filters"] span').text(a)}.bind(this)).fail(b.exception);var j=this._region.find("[data-action=change-user]"),k=j.attr("data-selected"),l=0;this._filteredUsers=[],a.each(this._users,function(b,c){var d=!0;a.each(this._filters,function(a,b){"submitted"==b?"0"==c.submitted&&(d=!1):"notsubmitted"==b?"1"==c.submitted&&(d=!1):"requiregrading"==b&&"0"==c.requiregrading&&(d=!1)}),d&&(this._filteredUsers[this._filteredUsers.length]=c,k==c.id&&(l=b))}.bind(this)),this._filteredUsers.length?this._selectUserById(this._filteredUsers[l].id):this._selectNoUser()},g.prototype._selectNoUser=function(){this._isLoading||(f.checkFormForChanges('[data-region="grade-panel"] .gradeform')?c.get_strings([{key:"unsavedchanges",component:"mod_assign"},{key:"unsavedchangesquestion",component:"mod_assign"},{key:"saveandcontinue",component:"mod_assign"},{key:"cancel",component:"core"}]).done(function(c){b.confirm(c[0],c[1],c[2],c[3],function(){a(document).trigger("save-changes",-1)})}):a(document).trigger("user-changed",-1))},g.prototype._selectUserById=function(d){var e=this._region.find("[data-action=change-user]"),g=parseInt(d,10);this._isLoading||(f.checkFormForChanges('[data-region="grade-panel"] .gradeform')?c.get_strings([{key:"unsavedchanges",component:"mod_assign"},{key:"unsavedchangesquestion",component:"mod_assign"},{key:"saveandcontinue",component:"mod_assign"},{key:"cancel",component:"core"}]).done(function(c){b.confirm(c[0],c[1],c[2],c[3],function(){a(document).trigger("save-changes",g)})}):(e.attr("data-selected",d),!isNaN(g)&&g>0&&a(document).trigger("user-changed",d)))},g.prototype._toggleExpandFilters=function(b){b.preventDefault();var c=a(b.target).closest('[data-region="user-filters"]'),d="true"==c.attr("aria-expanded"),e=a(document.getElementById(c.attr("aria-controls")));d?(e.hide(),e.attr("aria-hidden","true"),c.attr("aria-expanded","false"),a(document).unbind("click.mod_assign_grading_navigation")):(e.css("display","inline-block"),e.attr("aria-hidden","false"),c.attr("aria-expanded","true"),b.stopPropagation(),a(document).on("click.mod_assign_grading_navigation",this._checkClickOutsideConfigureFilters.bind(this)))},g.prototype._handlePreviousUser=function(a){a.preventDefault();var b=this._region.find("[data-action=change-user]"),c=b.attr("data-selected"),d=0,e=0;for(d=0;d<this._filteredUsers.length;d++)if(this._filteredUsers[d].id==c){e=d;break}var f=this._filteredUsers.length,g=e-1;g<0&&(g=f-1),f&&this._selectUserById(this._filteredUsers[g].id)},g.prototype._handleNextUser=function(a){a.preventDefault();var b=this._region.find("[data-action=change-user]"),c=b.attr("data-selected"),d=0,e=0;for(d=0;d<this._filteredUsers.length;d++)if(this._filteredUsers[d].id==c){e=d;break}var f=this._filteredUsers.length,g=(e+1)%f;f&&this._selectUserById(this._filteredUsers[g].id)},g.prototype._refreshCount=function(){var a=this._region.find("[data-action=change-user]"),d=a.attr("data-selected"),e=0,f=0;if(isNaN(d)||d<=0)this._region.find('[data-region="user-count"]').hide();else{for(this._region.find('[data-region="user-count"]').show(),e=0;e<this._filteredUsers.length;e++)if(this._filteredUsers[e].id==d){f=e;break}var g=this._filteredUsers.length;g&&(f+=1);var h={x:f,y:g};c.get_string("xofy","mod_assign",h).done(function(a){this._region.find('[data-region="user-count-summary"]').text(a)}.bind(this)).fail(b.exception)}},g.prototype._refreshSelector=function(a,b){var c=this._region.find("[data-action=change-user]");b=parseInt(b,10),!isNaN(b)&&b>0&&c.attr("data-selected",b),this._refreshCount()},g.prototype._handleChangeUser=function(){var d=this._region.find("[data-action=change-user]"),e=parseInt(d.val(),10);this._isLoading||(f.checkFormForChanges('[data-region="grade-panel"] .gradeform')?c.get_strings([{key:"unsavedchanges",component:"mod_assign"},{key:"unsavedchangesquestion",component:"mod_assign"},{key:"saveandcontinue",component:"mod_assign"},{key:"cancel",component:"core"}]).done(function(c){b.confirm(c[0],c[1],c[2],c[3],function(){a(document).trigger("save-changes",e)})}):!isNaN(e)&&e>0&&(d.attr("data-selected",e),a(document).trigger("user-changed",e)))},g});