From 14d141130084b0c0a28b70f587af03b3cd124d32 Mon Sep 17 00:00:00 2001
From: Julian Maurice <julian.maurice@biblibre.com>
Date: Thu, 27 Sep 2018 14:18:35 +0200
Subject: Fix task drag and drop slowdown when a column is hidden

It looks like jQuery UI has some difficulties when a column with a lot
of tasks is hidden.
Adding ':visible' to the connectWith properties of sortable() seems to
fix the problem

Fixes #4011
---
 assets/js/app.min.js              | 2 +-
 assets/js/src/BoardDragAndDrop.js | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

(limited to 'assets/js')

diff --git a/assets/js/app.min.js b/assets/js/app.min.js
index c7796573..877c8af3 100644
--- a/assets/js/app.min.js
+++ b/assets/js/app.min.js
@@ -1,2 +1,2 @@
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s(e){KB.trigger("modal.stop"),KB.find("#message-container").replace(KB.dom("div").attr("id","message-container").attr("class","alert alert-error").text(e).build())}function c(){var e=i();"after"===r()&&e++,KB.find("#message-container").replace(KB.dom("div").attr("id","message-container").build()),KB.http.postJson(t.saveUrl,{column_id:a(),swimlane_id:o(),position:e}).error(function(e){e&&s(e.message)})}function u(){var e=[];return t.board.forEach(function(n){var o={value:n.id,text:n.name};n.id==t.task.swimlane_id&&(o.selected=""),e.push(o)}),KB.dom("select").attr("id","form-swimlanes").change(d).for("option",e).build()}function m(){var e=[],n=o();return t.board.forEach(function(o){n===o.id&&o.columns.forEach(function(n){var o={value:n.id,text:n.title};n.id==t.task.column_id&&(o.selected=""),e.push(o)})}),KB.dom("select").attr("id","form-columns").change(l).for("option",e).build()}function p(){var e=[],n=o(),i=a(),r=KB.dom("div").attr("id","form-tasks");return t.board.forEach(function(t){n===t.id&&t.columns.forEach(function(t){i===t.id&&t.tasks.forEach(function(t){e.push({value:t.position,text:"#"+t.id+" - "+t.title})})})}),e.length>0&&r.add(KB.html.label(t.positionLabel,"form-position")).add(KB.dom("select").attr("id","form-position").for("option",e).build()).add(KB.html.radio(t.beforeLabel,"positionChoice","before")).add(KB.html.radio(t.afterLabel,"positionChoice","after")),r.build()}this.render=function(){KB.on("modal.submit",c),KB.on("modal.close",function(){KB.removeListener("modal.submit",c)});var n=KB.dom("div").add(KB.dom("div").attr("id","message-container").build()).add(KB.html.label(t.swimlaneLabel,"form-swimlanes")).add(u()).add(KB.html.label(t.columnLabel,"form-columns")).add(m()).add(p()).build();e.appendChild(n)}}),KB.onClick(".js-template",function(e){var t=KB.dom(e.target).data("template"),n=KB.dom(e.target).data("templateTarget"),o=KB.find(n);o&&(o.build().value=t),_KB.controllers.Dropdown.close()}),KB.component("text-editor",function(e,t){function n(){var e=KB.dom("div").attr("class","text-editor-toolbar").for("a",[{href:"#",html:'<i class="fa fa-pencil-square-o fa-fw"></i> '+t.labelWrite,click:function(){a()}}]).build();return h=KB.dom("div").attr("class","text-editor-preview-area markdown").build(),KB.dom("div").attr("class","text-editor-view-mode").add(e).add(h).hide().build()}function o(){var n=KB.dom("div").attr("class","text-editor-toolbar").for("a",[{href:"#",html:'<i class="fa fa-eye fa-fw"></i> '+t.labelPreview,click:function(){a()}},{href:"#",html:'<i class="fa fa-bold fa-fw"></i>',click:function(){d("**")}},{href:"#",html:'<i class="fa fa-italic fa-fw"></i>',click:function(){d("_")}},{href:"#",html:'<i class="fa fa-strikethrough fa-fw"></i>',click:function(){d("~~")}},{href:"#",html:'<i class="fa fa-quote-right 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n=t.split("\n"),o=0;o<n.length;o++)-1===n[o].indexOf(e)&&(n[o]=e+n[o]);c(n.join("\n"))}u(e,1)}function c(e){m.focus();var t=!1,n=KB.utils.getSelectionPosition(m);if(g=n.selectionStart,v=n.selectionEnd,document.queryCommandSupported("insertText")&&(t=document.execCommand("insertText",!1,e)),!t){try{document.execCommand("ms-beginUndoUnit")}catch(e){}m.value=r(m.value,g,v,e);try{document.execCommand("ms-endUndoUnit")}catch(e){}}}function u(e,t){t=t||0;var n=v+e.length+t;m.setSelectionRange(n,n)}var m,p,f,h,g,v;this.render=function(){f=o(),p=n(),e.appendChild(KB.dom("div").attr("class","text-editor").add(p).add(f).build()),t.autofocus&&m.focus()}}),document.addEventListener("DOMContentLoaded",function(){KB.render(),KB.listen(),KB.keyboardShortcuts(),KB.tooltip(),KB.trigger("dom.ready")});var Kanboard={};Kanboard.App=function(){this.controllers={}},Kanboard.App.prototype.get=function(e){return this.controllers[e]},Kanboard.App.prototype.execute=function(){for(var e in Kanboard)if("App"!==e){var t=new Kanboard[e](this);this.controllers[e]=t,"function"==typeof t.execute&&t.execute(),"function"==typeof t.listen&&t.listen(),"function"==typeof t.focus&&t.focus()}this.focus(),this.datePicker(),this.autoComplete(),this.tagAutoComplete()},Kanboard.App.prototype.focus=function(){$(document).on("focus",".auto-select",function(){$(this).select()}),$(document).on("mouseup",".auto-select",function(e){e.preventDefault()})},Kanboard.App.prototype.datePicker=function(){var e=$("body"),t=e.data("js-date-format"),n=e.data("js-time-format"),o=e.data("js-lang");$.datepicker.setDefaults($.datepicker.regional[o]),$.timepicker.setDefaults($.timepicker.regional[o]),$(".form-date").datepicker({showOtherMonths:!0,selectOtherMonths:!0,dateFormat:t,constrainInput:!1}),$(".form-datetime").datetimepicker({dateFormat:t,timeFormat:n,constrainInput:!1})},Kanboard.App.prototype.tagAutoComplete=function(){$(".tag-autocomplete").select2({tags:!0})},Kanboard.App.prototype.autoComplete=function(){$(".autocomplete").each(function(){var e=$(this),t=e.data("dst-field"),n=e.data("dst-extra-fields");""===$("#form-"+t).val()&&e.parent().find("button[type=submit]").attr("disabled","disabled"),e.autocomplete({source:e.data("search-url"),minLength:1,select:function(o,a){if($("input[name="+t+"]").val(a.item.id),n)for(var i=n.split(","),r=0;r<i.length;r++){var d=i[r].trim();$("input[name="+d+"]").val(a.item[d])}e.parent().find("button[type=submit]").removeAttr("disabled")}})})},Kanboard.App.prototype.hasId=function(e){return!!document.getElementById(e)},Kanboard.App.prototype.showLoadingIcon=function(){$("body").append('<span id="app-loading-icon">&nbsp;<i class="fa fa-spinner fa-spin"></i></span>')},Kanboard.App.prototype.hideLoadingIcon=function(){$("#app-loading-icon").remove()},Kanboard.BoardCollapsedMode=function(e){this.app=e},Kanboard.BoardCollapsedMode.prototype.toggle=function(){var e=this;this.app.showLoadingIcon(),$.ajax({cache:!1,url:$('.filter-display-mode:not([style="display: none;"]) a').attr("href"),success:function(t){$(".filter-display-mode").toggle(),e.app.get("BoardDragAndDrop").refresh(t)}})},Kanboard.BoardColumnView=function(e){this.app=e},Kanboard.BoardColumnView.prototype.execute=function(){this.app.hasId("board")&&this.render()},Kanboard.BoardColumnView.prototype.listen=function(){var e=this;$(document).on("click",".board-toggle-column-view",function(){e.toggle($(this).data("column-id"))})},Kanboard.BoardColumnView.prototype.onBoardRendered=function(){this.render()},Kanboard.BoardColumnView.prototype.render=function(){var e=this;$(".board-column-header").each(function(){var t=$(this).data("column-id");localStorage.getItem("hidden_column_"+t)&&e.hideColumn(t)})},Kanboard.BoardColumnView.prototype.toggle=function(e){localStorage.getItem("hidden_column_"+e)?this.showColumn(e):this.hideColumn(e),this.app.get("BoardDragAndDrop").dragAndDrop()},Kanboard.BoardColumnView.prototype.hideColumn=function(e){$(".board-column-"+e+" .board-column-expanded").hide(),$(".board-column-"+e+" .board-column-collapsed").show(),$(".board-column-header-"+e+" .board-column-expanded").hide(),$(".board-column-header-"+e+" .board-column-collapsed").show(),$(".board-column-header-"+e).each(function(){$(this).removeClass("board-column-compact"),$(this).addClass("board-column-header-collapsed")}),$(".board-column-"+e).each(function(){$(this).addClass("board-column-task-collapsed")}),$(".board-column-"+e+" .board-rotation").each(function(){$(this).css("width",$(".board-column-"+e).height())}),localStorage.setItem("hidden_column_"+e,1)},Kanboard.BoardColumnView.prototype.showColumn=function(e){$(".board-column-"+e+" .board-column-expanded").show(),$(".board-column-"+e+" .board-column-collapsed").hide(),$(".board-column-header-"+e+" .board-column-expanded").show(),$(".board-column-header-"+e+" 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e=localStorage.getItem("horizontal_scroll")||1;localStorage.setItem("horizontal_scroll",0==e?1:0),this.render()},Kanboard.BoardHorizontalScrolling.prototype.render=function(){0==localStorage.getItem("horizontal_scroll")?($(".filter-wide").show(),$(".filter-compact").hide(),$("#board-container").addClass("board-container-compact"),$("#board th:not(.board-column-header-collapsed)").addClass("board-column-compact")):($(".filter-wide").hide(),$(".filter-compact").show(),$("#board-container").removeClass("board-container-compact"),$("#board th").removeClass("board-column-compact"))},Kanboard.BoardPolling=function(e){this.app=e},Kanboard.BoardPolling.prototype.execute=function(){if(this.app.hasId("board")){var e=parseInt($("#board").attr("data-check-interval"));e>0&&window.setInterval(this.check.bind(this),1e3*e)}},Kanboard.BoardPolling.prototype.check=function(){if(KB.utils.isVisible()&&!this.app.get("BoardDragAndDrop").savingInProgress){var e=this;this.app.showLoadingIcon(),$.ajax({cache:!1,url:$("#board").data("check-url"),statusCode:{200:function(t){e.app.get("BoardDragAndDrop").refresh(t)},304:function(){e.app.hideLoadingIcon()}}})}},Kanboard.Column=function(e){this.app=e},Kanboard.Column.prototype.listen=function(){this.dragAndDrop()},Kanboard.Column.prototype.dragAndDrop=function(){var e=this;$(".draggable-row-handle").mouseenter(function(){$(this).parent().parent().addClass("draggable-item-hover")}).mouseleave(function(){$(this).parent().parent().removeClass("draggable-item-hover")}),$(".columns-table tbody").sortable({forcePlaceholderSize:!0,handle:"td:first i",helper:function(e,t){return t.children().each(function(){$(this).width($(this).width())}),t},stop:function(t,n){var o=n.item;o.removeClass("draggable-item-selected"),e.savePosition(o.data("column-id"),o.index()+1)},start:function(e,t){t.item.addClass("draggable-item-selected")}}).disableSelection()},Kanboard.Column.prototype.savePosition=function(e,t){var n=$(".columns-table").data("save-position-url"),o=this;this.app.showLoadingIcon(),$.ajax({cache:!1,url:n,contentType:"application/json",type:"POST",processData:!1,data:JSON.stringify({column_id:e,position:t}),complete:function(){o.app.hideLoadingIcon()}})},Kanboard.Dropdown=function(e){this.app=e},Kanboard.Dropdown.prototype.listen=function(){var e=this;$(document).on("click",function(){e.close()}),$(document).on("click",".dropdown-menu",function(t){t.preventDefault(),t.stopImmediatePropagation(),e.close();var n=$(this).next("ul"),o=$(this).offset();$("body").append(jQuery("<div>",{id:"dropdown"})),n.clone().appendTo("#dropdown");var a=$("#dropdown ul");a.addClass("dropdown-submenu-open");var i=a.outerHeight(),r=a.outerWidth();o.top+i-$(window).scrollTop()<$(window).height()||$(window).scrollTop()+o.top<i?a.css("top",o.top+$(this).height()):a.css("top",o.top-i-5),o.left+r>$(window).width()?a.css("left",o.left-r+$(this).outerWidth()):a.css("left",o.left),null!==document.getElementById("dropdown")&&KB.trigger("dropdown.afterRender")}),$(document).on("click",".dropdown-submenu-open li",function(e){if($(e.target).is("li")){KB.trigger("dropdown.clicked");var t=$(this).find("a:visible");t.length>0&&t[0].click()}})},Kanboard.Dropdown.prototype.close=function(){null!==document.getElementById("dropdown")&&KB.trigger("dropdown.beforeDestroy"),$("#dropdown").remove()},Kanboard.Search=function(e){this.app=e},Kanboard.Search.prototype.focus=function(){$(document).on("focus","#form-search",function(){var e=$("#form-search");if(e[0].setSelectionRange){var t=2*e.val().length;e[0].setSelectionRange(t,t)}})},Kanboard.Search.prototype.listen=function(){$(document).on("click",".filter-helper",function(e){e.preventDefault();var t=$(this).data("filter"),n=$(this).data("append-filter"),o=$(this).data("unique-filter"),a=$("#form-search");if(o){var i=o.substr(0,o.indexOf(":"));t=a.val().replace(new RegExp("("+i+":[#a-z0-9]+)","g"),""),t=t.replace(new RegExp("("+i+':"(.+)")',"g"),""),t=t.trim(),t+=" "+o}else n&&(t=a.val()+" "+n);a.val(t),$("form.search").submit()})},Kanboard.Swimlane=function(e){this.app=e},Kanboard.Swimlane.prototype.execute=function(){$(".swimlanes-table").length&&this.dragAndDrop()},Kanboard.Swimlane.prototype.listen=function(){var e=this;$(document).on("click",".board-swimlane-toggle",function(t){t.preventDefault();var n=$(this).data("swimlane-id");e.isCollapsed(n)?e.expand(n):e.collapse(n)})},Kanboard.Swimlane.prototype.onBoardRendered=function(){for(var e=this.getAllCollapsed(),t=0;t<e.length;t++)this.collapse(e[t])},Kanboard.Swimlane.prototype.getStorageKey=function(){return"hidden_swimlanes_"+$("#board").data("project-id")},Kanboard.Swimlane.prototype.expand=function(e){var t=this.getAllCollapsed(),n=t.indexOf(e);n>-1&&t.splice(n,1),localStorage.setItem(this.getStorageKey(),JSON.stringify(t)),$(".board-swimlane-columns-"+e).css("display","table-row"),$(".board-swimlane-tasks-"+e).css("display","table-row"),$(".hide-icon-swimlane-"+e).css("display","inline"),$(".show-icon-swimlane-"+e).css("display","none")},Kanboard.Swimlane.prototype.collapse=function(e){var t=this.getAllCollapsed();t.indexOf(e)<0&&(t.push(e),localStorage.setItem(this.getStorageKey(),JSON.stringify(t))),$(".board-swimlane-columns-"+e+":not(:first-child)").css("display","none"),$(".board-swimlane-tasks-"+e).css("display","none"),$(".hide-icon-swimlane-"+e).css("display","none"),$(".show-icon-swimlane-"+e).css("display","inline")},Kanboard.Swimlane.prototype.isCollapsed=function(e){return this.getAllCollapsed().indexOf(e)>-1},Kanboard.Swimlane.prototype.getAllCollapsed=function(){return JSON.parse(localStorage.getItem(this.getStorageKey()))||[]},Kanboard.Swimlane.prototype.dragAndDrop=function(){var e=this;$(".draggable-row-handle").mouseenter(function(){$(this).parent().parent().addClass("draggable-item-hover")}).mouseleave(function(){$(this).parent().parent().removeClass("draggable-item-hover")}),$(".swimlanes-table tbody").sortable({forcePlaceholderSize:!0,handle:"td:first i",helper:function(e,t){return t.children().each(function(){$(this).width($(this).width())}),t},stop:function(t,n){var o=n.item;o.removeClass("draggable-item-selected"),e.savePosition(o.data("swimlane-id"),o.index()+1)},start:function(e,t){t.item.addClass("draggable-item-selected")}}).disableSelection()},Kanboard.Swimlane.prototype.savePosition=function(e,t){var n=$(".swimlanes-table").data("save-position-url"),o=this;this.app.showLoadingIcon(),$.ajax({cache:!1,url:n,contentType:"application/json",type:"POST",processData:!1,data:JSON.stringify({swimlane_id:e,position:t}),complete:function(){o.app.hideLoadingIcon()}})},Kanboard.Task=function(e){this.app=e},Kanboard.Task.prototype.onPopoverOpened=function(){this.renderColorPicker(),$(document).on("click",".assign-me",function(e){var t=$(this).data("current-id"),n="#"+$(this).data("target-id");e.preventDefault(),$(n+" option[value="+t+"]").length&&$(n).val(t)})},Kanboard.Task.prototype.renderColorPicker=function(){function e(e){return $('<div class="color-picker-option"><div class="color-picker-square color-'+e.id+'"></div><div class="color-picker-label">'+e.text+"</div></div>")}$(".color-picker").select2({minimumResultsForSearch:1/0,templateResult:e,templateSelection:e})},Kanboard.BoardDragAndDrop=function(e){this.app=e,this.savingInProgress=!1},Kanboard.BoardDragAndDrop.prototype.execute=function(){this.app.hasId("board")&&(this.executeListeners(),this.dragAndDrop())},Kanboard.BoardDragAndDrop.prototype.dragAndDrop=function(){var e=this,t=$(".board-task-list"),n={forcePlaceholderSize:!0,tolerance:"pointer",connectWith:".sortable-column",placeholder:"draggable-placeholder",items:".draggable-item",stop:function(t,n){var o=n.item,a=o.attr("data-task-id"),i=o.attr("data-position"),r=o.attr("data-column-id"),d=o.attr("data-swimlane-id"),l=o.parent().attr("data-column-id"),s=o.parent().attr("data-swimlane-id"),c=o.index()+1;o.removeClass("draggable-item-selected"),l==r&&s==d&&c==i||(e.changeTaskState(a),e.save(a,r,l,c,s))},start:function(e,t){t.item.addClass("draggable-item-selected"),t.placeholder.height(t.item.height())}};isMobile.any&&($(".task-board-sort-handle").css("display","inline"),n.handle=".task-board-sort-handle"),t.each(function(){$(this).css("min-height",$(this).parent().height())}),t.sortable(n)},Kanboard.BoardDragAndDrop.prototype.changeTaskState=function(e){var t=$("div[data-task-id="+e+"]");t.addClass("task-board-saving-state"),t.find(".task-board-saving-icon").show()},Kanboard.BoardDragAndDrop.prototype.save=function(e,t,n,o,a){var i=this;i.app.showLoadingIcon(),i.savingInProgress=!0,$.ajax({cache:!1,url:$("#board").data("save-url"),contentType:"application/json",type:"POST",processData:!1,data:JSON.stringify({task_id:e,src_column_id:t,dst_column_id:n,swimlane_id:a,position:o}),success:function(e){i.refresh(e),i.savingInProgress=!1},error:function(){i.app.hideLoadingIcon(),i.savingInProgress=!1},statusCode:{403:function(e){window.alert(e.responseJSON.message),document.location.reload(!0)}}})},Kanboard.BoardDragAndDrop.prototype.refresh=function(e){$("#board-container").replaceWith(e),this.app.hideLoadingIcon(),this.executeListeners(),this.dragAndDrop(),KB.tooltip()},Kanboard.BoardDragAndDrop.prototype.executeListeners=function(){for(var e in this.app.controllers){var t=this.app.get(e);"function"==typeof t.onBoardRendered&&t.onBoardRendered()}};var _KB=null;jQuery(document).ready(function(){_KB=new Kanboard.App,_KB.execute()});
\ No newline at end of file
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Kanboard)if("App"!==e){var t=new Kanboard[e](this);this.controllers[e]=t,"function"==typeof t.execute&&t.execute(),"function"==typeof t.listen&&t.listen(),"function"==typeof t.focus&&t.focus()}this.focus(),this.datePicker(),this.autoComplete(),this.tagAutoComplete()},Kanboard.App.prototype.focus=function(){$(document).on("focus",".auto-select",function(){$(this).select()}),$(document).on("mouseup",".auto-select",function(e){e.preventDefault()})},Kanboard.App.prototype.datePicker=function(){var e=$("body"),t=e.data("js-date-format"),n=e.data("js-time-format"),o=e.data("js-lang");$.datepicker.setDefaults($.datepicker.regional[o]),$.timepicker.setDefaults($.timepicker.regional[o]),$(".form-date").datepicker({showOtherMonths:!0,selectOtherMonths:!0,dateFormat:t,constrainInput:!1}),$(".form-datetime").datetimepicker({dateFormat:t,timeFormat:n,constrainInput:!1})},Kanboard.App.prototype.tagAutoComplete=function(){$(".tag-autocomplete").select2({tags:!0})},Kanboard.App.prototype.autoComplete=function(){$(".autocomplete").each(function(){var e=$(this),t=e.data("dst-field"),n=e.data("dst-extra-fields");""===$("#form-"+t).val()&&e.parent().find("button[type=submit]").attr("disabled","disabled"),e.autocomplete({source:e.data("search-url"),minLength:1,select:function(o,a){if($("input[name="+t+"]").val(a.item.id),n)for(var i=n.split(","),r=0;r<i.length;r++){var d=i[r].trim();$("input[name="+d+"]").val(a.item[d])}e.parent().find("button[type=submit]").removeAttr("disabled")}})})},Kanboard.App.prototype.hasId=function(e){return!!document.getElementById(e)},Kanboard.App.prototype.showLoadingIcon=function(){$("body").append('<span id="app-loading-icon">&nbsp;<i class="fa fa-spinner fa-spin"></i></span>')},Kanboard.App.prototype.hideLoadingIcon=function(){$("#app-loading-icon").remove()},Kanboard.BoardCollapsedMode=function(e){this.app=e},Kanboard.BoardCollapsedMode.prototype.toggle=function(){var e=this;this.app.showLoadingIcon(),$.ajax({cache:!1,url:$('.filter-display-mode:not([style="display: none;"]) a').attr("href"),success:function(t){$(".filter-display-mode").toggle(),e.app.get("BoardDragAndDrop").refresh(t)}})},Kanboard.BoardColumnView=function(e){this.app=e},Kanboard.BoardColumnView.prototype.execute=function(){this.app.hasId("board")&&this.render()},Kanboard.BoardColumnView.prototype.listen=function(){var e=this;$(document).on("click",".board-toggle-column-view",function(){e.toggle($(this).data("column-id"))})},Kanboard.BoardColumnView.prototype.onBoardRendered=function(){this.render()},Kanboard.BoardColumnView.prototype.render=function(){var e=this;$(".board-column-header").each(function(){var t=$(this).data("column-id");localStorage.getItem("hidden_column_"+t)&&e.hideColumn(t)})},Kanboard.BoardColumnView.prototype.toggle=function(e){localStorage.getItem("hidden_column_"+e)?this.showColumn(e):this.hideColumn(e),this.app.get("BoardDragAndDrop").dragAndDrop()},Kanboard.BoardColumnView.prototype.hideColumn=function(e){$(".board-column-"+e+" .board-column-expanded").hide(),$(".board-column-"+e+" .board-column-collapsed").show(),$(".board-column-header-"+e+" .board-column-expanded").hide(),$(".board-column-header-"+e+" 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e=localStorage.getItem("horizontal_scroll")||1;localStorage.setItem("horizontal_scroll",0==e?1:0),this.render()},Kanboard.BoardHorizontalScrolling.prototype.render=function(){0==localStorage.getItem("horizontal_scroll")?($(".filter-wide").show(),$(".filter-compact").hide(),$("#board-container").addClass("board-container-compact"),$("#board th:not(.board-column-header-collapsed)").addClass("board-column-compact")):($(".filter-wide").hide(),$(".filter-compact").show(),$("#board-container").removeClass("board-container-compact"),$("#board th").removeClass("board-column-compact"))},Kanboard.BoardPolling=function(e){this.app=e},Kanboard.BoardPolling.prototype.execute=function(){if(this.app.hasId("board")){var e=parseInt($("#board").attr("data-check-interval"));e>0&&window.setInterval(this.check.bind(this),1e3*e)}},Kanboard.BoardPolling.prototype.check=function(){if(KB.utils.isVisible()&&!this.app.get("BoardDragAndDrop").savingInProgress){var e=this;this.app.showLoadingIcon(),$.ajax({cache:!1,url:$("#board").data("check-url"),statusCode:{200:function(t){e.app.get("BoardDragAndDrop").refresh(t)},304:function(){e.app.hideLoadingIcon()}}})}},Kanboard.Column=function(e){this.app=e},Kanboard.Column.prototype.listen=function(){this.dragAndDrop()},Kanboard.Column.prototype.dragAndDrop=function(){var e=this;$(".draggable-row-handle").mouseenter(function(){$(this).parent().parent().addClass("draggable-item-hover")}).mouseleave(function(){$(this).parent().parent().removeClass("draggable-item-hover")}),$(".columns-table tbody").sortable({forcePlaceholderSize:!0,handle:"td:first i",helper:function(e,t){return t.children().each(function(){$(this).width($(this).width())}),t},stop:function(t,n){var o=n.item;o.removeClass("draggable-item-selected"),e.savePosition(o.data("column-id"),o.index()+1)},start:function(e,t){t.item.addClass("draggable-item-selected")}}).disableSelection()},Kanboard.Column.prototype.savePosition=function(e,t){var n=$(".columns-table").data("save-position-url"),o=this;this.app.showLoadingIcon(),$.ajax({cache:!1,url:n,contentType:"application/json",type:"POST",processData:!1,data:JSON.stringify({column_id:e,position:t}),complete:function(){o.app.hideLoadingIcon()}})},Kanboard.Dropdown=function(e){this.app=e},Kanboard.Dropdown.prototype.listen=function(){var e=this;$(document).on("click",function(){e.close()}),$(document).on("click",".dropdown-menu",function(t){t.preventDefault(),t.stopImmediatePropagation(),e.close();var n=$(this).next("ul"),o=$(this).offset();$("body").append(jQuery("<div>",{id:"dropdown"})),n.clone().appendTo("#dropdown");var a=$("#dropdown ul");a.addClass("dropdown-submenu-open");var i=a.outerHeight(),r=a.outerWidth();o.top+i-$(window).scrollTop()<$(window).height()||$(window).scrollTop()+o.top<i?a.css("top",o.top+$(this).height()):a.css("top",o.top-i-5),o.left+r>$(window).width()?a.css("left",o.left-r+$(this).outerWidth()):a.css("left",o.left),null!==document.getElementById("dropdown")&&KB.trigger("dropdown.afterRender")}),$(document).on("click",".dropdown-submenu-open li",function(e){if($(e.target).is("li")){KB.trigger("dropdown.clicked");var t=$(this).find("a:visible");t.length>0&&t[0].click()}})},Kanboard.Dropdown.prototype.close=function(){null!==document.getElementById("dropdown")&&KB.trigger("dropdown.beforeDestroy"),$("#dropdown").remove()},Kanboard.Search=function(e){this.app=e},Kanboard.Search.prototype.focus=function(){$(document).on("focus","#form-search",function(){var e=$("#form-search");if(e[0].setSelectionRange){var t=2*e.val().length;e[0].setSelectionRange(t,t)}})},Kanboard.Search.prototype.listen=function(){$(document).on("click",".filter-helper",function(e){e.preventDefault();var t=$(this).data("filter"),n=$(this).data("append-filter"),o=$(this).data("unique-filter"),a=$("#form-search");if(o){var i=o.substr(0,o.indexOf(":"));t=a.val().replace(new RegExp("("+i+":[#a-z0-9]+)","g"),""),t=t.replace(new RegExp("("+i+':"(.+)")',"g"),""),t=t.trim(),t+=" "+o}else n&&(t=a.val()+" "+n);a.val(t),$("form.search").submit()})},Kanboard.Swimlane=function(e){this.app=e},Kanboard.Swimlane.prototype.execute=function(){$(".swimlanes-table").length&&this.dragAndDrop()},Kanboard.Swimlane.prototype.listen=function(){var e=this;$(document).on("click",".board-swimlane-toggle",function(t){t.preventDefault();var n=$(this).data("swimlane-id");e.isCollapsed(n)?e.expand(n):e.collapse(n)})},Kanboard.Swimlane.prototype.onBoardRendered=function(){for(var e=this.getAllCollapsed(),t=0;t<e.length;t++)this.collapse(e[t])},Kanboard.Swimlane.prototype.getStorageKey=function(){return"hidden_swimlanes_"+$("#board").data("project-id")},Kanboard.Swimlane.prototype.expand=function(e){var t=this.getAllCollapsed(),n=t.indexOf(e);n>-1&&t.splice(n,1),localStorage.setItem(this.getStorageKey(),JSON.stringify(t)),$(".board-swimlane-columns-"+e).css("display","table-row"),$(".board-swimlane-tasks-"+e).css("display","table-row"),$(".hide-icon-swimlane-"+e).css("display","inline"),$(".show-icon-swimlane-"+e).css("display","none")},Kanboard.Swimlane.prototype.collapse=function(e){var t=this.getAllCollapsed();t.indexOf(e)<0&&(t.push(e),localStorage.setItem(this.getStorageKey(),JSON.stringify(t))),$(".board-swimlane-columns-"+e+":not(:first-child)").css("display","none"),$(".board-swimlane-tasks-"+e).css("display","none"),$(".hide-icon-swimlane-"+e).css("display","none"),$(".show-icon-swimlane-"+e).css("display","inline")},Kanboard.Swimlane.prototype.isCollapsed=function(e){return this.getAllCollapsed().indexOf(e)>-1},Kanboard.Swimlane.prototype.getAllCollapsed=function(){return JSON.parse(localStorage.getItem(this.getStorageKey()))||[]},Kanboard.Swimlane.prototype.dragAndDrop=function(){var e=this;$(".draggable-row-handle").mouseenter(function(){$(this).parent().parent().addClass("draggable-item-hover")}).mouseleave(function(){$(this).parent().parent().removeClass("draggable-item-hover")}),$(".swimlanes-table tbody").sortable({forcePlaceholderSize:!0,handle:"td:first i",helper:function(e,t){return t.children().each(function(){$(this).width($(this).width())}),t},stop:function(t,n){var o=n.item;o.removeClass("draggable-item-selected"),e.savePosition(o.data("swimlane-id"),o.index()+1)},start:function(e,t){t.item.addClass("draggable-item-selected")}}).disableSelection()},Kanboard.Swimlane.prototype.savePosition=function(e,t){var n=$(".swimlanes-table").data("save-position-url"),o=this;this.app.showLoadingIcon(),$.ajax({cache:!1,url:n,contentType:"application/json",type:"POST",processData:!1,data:JSON.stringify({swimlane_id:e,position:t}),complete:function(){o.app.hideLoadingIcon()}})},Kanboard.Task=function(e){this.app=e},Kanboard.Task.prototype.onPopoverOpened=function(){this.renderColorPicker(),$(document).on("click",".assign-me",function(e){var t=$(this).data("current-id"),n="#"+$(this).data("target-id");e.preventDefault(),$(n+" option[value="+t+"]").length&&$(n).val(t)})},Kanboard.Task.prototype.renderColorPicker=function(){function e(e){return $('<div class="color-picker-option"><div class="color-picker-square color-'+e.id+'"></div><div class="color-picker-label">'+e.text+"</div></div>")}$(".color-picker").select2({minimumResultsForSearch:1/0,templateResult:e,templateSelection:e})},Kanboard.BoardDragAndDrop=function(e){this.app=e,this.savingInProgress=!1},Kanboard.BoardDragAndDrop.prototype.execute=function(){this.app.hasId("board")&&(this.executeListeners(),this.dragAndDrop())},Kanboard.BoardDragAndDrop.prototype.dragAndDrop=function(){var e=this,t=$(".board-task-list"),n={forcePlaceholderSize:!0,tolerance:"pointer",connectWith:".sortable-column:visible",placeholder:"draggable-placeholder",items:".draggable-item",stop:function(t,n){var o=n.item,a=o.attr("data-task-id"),i=o.attr("data-position"),r=o.attr("data-column-id"),d=o.attr("data-swimlane-id"),l=o.parent().attr("data-column-id"),s=o.parent().attr("data-swimlane-id"),c=o.index()+1;o.removeClass("draggable-item-selected"),l==r&&s==d&&c==i||(e.changeTaskState(a),e.save(a,r,l,c,s))},start:function(e,t){t.item.addClass("draggable-item-selected"),t.placeholder.height(t.item.height())}};isMobile.any&&($(".task-board-sort-handle").css("display","inline"),n.handle=".task-board-sort-handle"),t.each(function(){$(this).css("min-height",$(this).parent().height())}),t.sortable(n)},Kanboard.BoardDragAndDrop.prototype.changeTaskState=function(e){var t=$("div[data-task-id="+e+"]");t.addClass("task-board-saving-state"),t.find(".task-board-saving-icon").show()},Kanboard.BoardDragAndDrop.prototype.save=function(e,t,n,o,a){var i=this;i.app.showLoadingIcon(),i.savingInProgress=!0,$.ajax({cache:!1,url:$("#board").data("save-url"),contentType:"application/json",type:"POST",processData:!1,data:JSON.stringify({task_id:e,src_column_id:t,dst_column_id:n,swimlane_id:a,position:o}),success:function(e){i.refresh(e),i.savingInProgress=!1},error:function(){i.app.hideLoadingIcon(),i.savingInProgress=!1},statusCode:{403:function(e){window.alert(e.responseJSON.message),document.location.reload(!0)}}})},Kanboard.BoardDragAndDrop.prototype.refresh=function(e){$("#board-container").replaceWith(e),this.app.hideLoadingIcon(),this.executeListeners(),this.dragAndDrop(),KB.tooltip()},Kanboard.BoardDragAndDrop.prototype.executeListeners=function(){for(var e in this.app.controllers){var t=this.app.get(e);"function"==typeof t.onBoardRendered&&t.onBoardRendered()}};var _KB=null;jQuery(document).ready(function(){_KB=new Kanboard.App,_KB.execute()});
\ No newline at end of file
diff --git a/assets/js/src/BoardDragAndDrop.js b/assets/js/src/BoardDragAndDrop.js
index eef45a19..8d9618be 100644
--- a/assets/js/src/BoardDragAndDrop.js
+++ b/assets/js/src/BoardDragAndDrop.js
@@ -16,7 +16,7 @@ Kanboard.BoardDragAndDrop.prototype.dragAndDrop = function() {
     var params = {
         forcePlaceholderSize: true,
         tolerance: "pointer",
-        connectWith: ".sortable-column",
+        connectWith: ".sortable-column:visible",
         placeholder: "draggable-placeholder",
         items: ".draggable-item",
         stop: function(event, ui) {
-- 
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