MDL-47494 ddimageortext: Fix drag and drop on Android touch devices. #85108

[moodle.git] / question / type / ddimageortext / yui / build / moodle-qtype_ddimageortext-dd / moodle-qtype_ddimageortext-dd-min.js

YUI.add("moodle-qtype_ddimageortext-dd",function(e,t){var n="ddimageortext_dd",r=function(){r.superclass.constructor.apply(this,arguments)};e.extend(r,e.Base,{doc:null,polltimer:null,afterimageloaddone:!1,poll_for_image_load:function(t,n,r,i){if(this.afterimageloaddone)return;var s=this.doc.bg_img().get("complete");n&&(s=s&&this.doc.bg_img().hasClass("constrained"));var o=!this.doc.drag_item_homes().some(function(e){if(e.get("tagName")!=="IMG")return!1;var t=e.get("complete");return n&&(t=t&&e.hasClass("constrained")),!t});if(s&&o)this.polltimer!==null&&(this.polltimer.cancel(),this.polltimer=null),this.doc.drag_item_homes().detach("load",this.poll_for_image_load),this.doc.bg_img().detach("load",this.poll_for_image_load),r!==0?e.later(r,this,i):i.call(this),this.afterimageloaddone=!0;else if(this.polltimer===null){var u=[null,n,r,i];this.polltimer=e.later(1e3,this,this.poll_for_image_load,u,!0)}},doc_structure:function(t){var n=e.one(this.get("topnode")),r=n.one("div.dragitems"),i=n.one("div.droparea");return{top_node:function(){return n},drag_items:function(){return r.all(".drag")},drop_zones:function(){return n.all("div.dropzones div.dropzone")},drop_zone_group:function(e){return n.all("div.dropzones div.group"+e)},drag_items_cloned_from:function(e){return r.all(".dragitems"+e)},drag_item:function(e){return r.one(".draginstance"+e)},drag_items_in_group:function(e){return r.all(".drag.group"+e)},drag_item_homes:function(){return r.all(".draghome")},bg_img:function(){return n.one(".dropbackground")},load_bg_img:function(e){i.setContent('<img class="dropbackground" src="'+e+'"/>'),this.bg_img().on("load",this.on_image_load,this,"bg_image")},add_or_update_drag_item_home:function(e,t,n,i){var s=this.drag_item_home(e),o="draghome dragitemhomes"+e+" group"+i,u='<img class="'+o+'" src="'+t+'" alt="'+n+'" />',a='<div class="'+o+'">'+n+"</div>";s===null?t?r.append(u):n!==""&&r.append(a):(t?r.insert(u,s):n!==""&&r.insert(a,s),s.remove(!0));var f=r.one(".dragitemhomes"+e);f!==null&&(f.setData("groupno",i),f.setData("dragitemno",e))},drag_item_home:function(e){return r.one(".dragitemhomes"+e)},get_classname_numeric_suffix:function(e,t){var n=e.getAttribute("class");if(n!==""){var r=n.split(" ");for(var i=0;i<r.length;i++){var s=new RegExp("^"+t+"([0-9])+$");if(s.test(r[i])){var o=new RegExp("([0-9])+$"),u=o.exec(r[i]);return+u[0]}}}throw'Prefix "'+t+'" not found in class names.'},clone_new_drag_item:function(e,t){var n=this.drag_item_home(t);if(n===null)return null;var r=n.cloneNode(!0);return r.removeClass("dragitemhomes"+t),r.addClass("dragitems"+t),r.addClass("draginstance"+e),r.removeClass("draghome"),r.addClass("drag"),r.setStyles({visibility:"visible",position:"absolute"}),r.setData("draginstanceno",e),r.setData("dragitemno",t),n.get("parentNode").appendChild(r),r},draggable_for_question:function(t,r,i){(new e.DD.Drag({node:t,dragMode:"point",groups:[r]})).plug(e.Plugin.DDConstrained,{constrain2node:n}),t.setData("group",r),t.setData("choice",i)},draggable_for_form:function(r){var i=(new e.DD.Drag({node:r,dragMode:"point"})).plug(e.Plugin.DDConstrained,{constrain2node:n});i.on("drag:end",function(e){var n=e.target.get("node"),r=n.getData("draginstanceno"),i=n.getData("gooddrop");i?t.set_drag_xy(r,[e.pageX,e.pageY]):t.reset_drag_xy(r)},this),i.on("drag:start",function(e){var t=e.target;t.get("node").setData("gooddrop",!1)},this)}}},update_padding_sizes_all:function(){for(var e=1;e<=8;e++)this.update_padding_size_for_group(e)},update_padding_size_for_group:function(e){var t=this.doc.top_node().all(".draghome.group"+e);if(t.size()!==0){var n=0,r=0;t.each(function(e){n=Math.max(n,e.get("clientWidth")),r=Math.max(r,e.get("clientHeight"))},this),t.each(function(e){var t=Math.round((10+r-e.get("clientHeight"))/2),i=Math.round((10+n-e.get("clientWidth"))/2);e.setStyle("padding",t+"px "+i+"px "+t+"px "+i+"px")},this),this.doc.drop_zone_group(e).setStyles({width:n+10,height:r+10})}},convert_to_window_xy:function(e){return[Number(e[0])+this.doc.bg_img().getX()+1,Number(e[1])+this.doc.bg_img().getY()+1]}},{NAME:n,ATTRS:{drops:{value:null},readonly:{value:!1},topnode:{value:null}}}),M.qtype_ddimageortext=M.qtype_ddimageortext||{},M.qtype_ddimageortext.dd_base_class=r;var i="ddimageortext_question",s=function(){s.superclass.constructor.apply(this,arguments)};e.extend(s,M.qtype_ddimageortext.dd_base_class,{touchscrolldisable:null,pendingid:"",initializer:function(){this.pendingid="qtype_ddimageortext-"+Math.random().toString(36).slice(2),M.util.js_pending(this.pendingid),this.doc=this.doc_structure(this),this.poll_for_image_load(null,!1,0,this.create_all_drag_and_drops),this.doc.bg_img().after("load",this.poll_for_image_load,this,!1,0,this.create_all_drag_and_drops),this.doc.drag_item_homes().after("load",this.poll_for_image_load,this,!1,0,this.create_all_drag_and_drops),e.later(500,this,this.reposition_drags_for_question,[this.pendingid],!0)},prevent_touchmove_from_scrolling:function(t){var n=e.UA.ie?"MSPointerStart":"touchstart",r=e.UA.ie?"MSPointerEnd":"touchend",i=e.UA.ie?"MSPointerMove":"touchmove";t.on(n,function(){if(this.touchscrolldisable)return;this.touchscrolldisable=e.one("body").on(i,function(e){e=e||window.event,e.preventDefault()})},this),t.on(r,function(){this.touchscrolldisable&&(this.touchscrolldisable.detach(),this.touchscrolldisable=null)},this)},create_all_drag_and_drops:function(){this.init_drops(),this.update_padding_sizes_all();var e=0;this.doc.drag_item_homes().each(function(t){var n=Number(this.doc.get_classname_numeric_suffix(t,"dragitemhomes")),r=+this.doc.get_classname_numeric_suffix(t,"choice"),i=+this.doc.get_classname_numeric_suffix(t,"group"),s=this.doc.drop_zone_group(i).size(),o=this.doc.clone_new_drag_item(e,n);e++,this.get("readonly")||(this.doc.draggable_for_question(o,i,r),this.prevent_touchmove_from_scrolling(o));if(o.hasClass("infinite")){var u=s-1;while(u>0)o=this.doc.clone_new_drag_item(e,n),e++,this.get("readonly")||(this.doc.draggable_for_question(o,i,r),this.prevent_touchmove_from_scrolling
(o)),u--}},this),this.reposition_drags_for_question(),this.get("readonly")||(this.doc.drop_zones().set("tabIndex",0),this.doc.drop_zones().each(function(e){e.on("dragchange",this.drop_zone_key_press,this)},this)),M.util.js_complete(this.pendingid)},drop_zone_key_press:function(e){switch(e.direction){case"next":this.place_next_drag_in(e.target);break;case"previous":this.place_previous_drag_in(e.target);break;case"remove":this.remove_drag_from_drop(e.target)}e.preventDefault(),this.reposition_drags_for_question()},place_next_drag_in:function(e){this.search_for_unplaced_drop_choice(e,1)},place_previous_drag_in:function(e){this.search_for_unplaced_drop_choice(e,-1)},search_for_unplaced_drop_choice:function(e,t){var n,r=this.current_drag_in_drop(e);if(""===r)if(t===1)n=1;else{n=1;var i=e.getData("group");this.doc.drag_items_in_group(i).each(function(e){n=Math.max(n,e.getData("choice"))},this)}else n=+r+t;var s;do{if(this.get_choices_for_drop(n,e).size()===0){this.remove_drag_from_drop(e);return}s=this.get_unplaced_choice_for_drop(n,e),n+=t}while(s===null);this.place_drag_in_drop(s,e)},current_drag_in_drop:function(t){var n=t.getData("inputid"),r=e.one("input#"+n);return r.get("value")},remove_drag_from_drop:function(e){this.place_drag_in_drop(null,e)},place_drag_in_drop:function(t,n){var r=n.getData("inputid"),i=e.one("input#"+r);t!==null?i.set("value",t.getData("choice")):i.set("value","")},reposition_drags_for_question:function(){this.doc.drag_items().removeClass("placed"),this.doc.drag_items().each(function(e){e.dd!==undefined&&e.dd.detachAll("drag:start")},this),this.doc.drop_zones().each(function(e){var t=e.getData("xy");e.setXY(this.convert_to_window_xy(t));var n="input#"+e.getData("inputid"),r=this.doc.top_node().one(n),i=r.get("value");if(i!==""){var s=this.get_unplaced_choice_for_drop(i,e);s!==null&&(s.setXY(e.getXY()),s.addClass("placed"),s.dd!==undefined&&s.dd.once("drag:start",function(e,t){t.set("value",""),e.target.get("node").removeClass("placed")},this,r))}},this),this.doc.drag_items().each(function(e){if(!e.hasClass("placed")&&!e.hasClass("yui3-dd-dragging")){var t=this.doc.drag_item_home(e.getData("dragitemno"));e.setXY(t.getXY())}},this)},get_choices_for_drop:function(e,t){var n=t.getData("group");return this.doc.top_node().all("div.dragitemgroup"+n+" .choice"+e+".drag")},get_unplaced_choice_for_drop:function(e,t){var n=this.get_choices_for_drop(e,t),r=null;return n.some(function(e){return!e.hasClass("placed")&&!e.hasClass("yui3-dd-dragging")?(r=e,!0):!1}),r},init_drops:function(){var t=this.doc.top_node().one("div.dropzones"),n={};for(var r=1;r<=8;r++){var i=e.Node.create('<div class = "dropzonegroup'+r+'"></div>');t.append(i),n[r]=i}var s=function(e){var t=e.drag.get("node"),n=e.drop.get("node");Number(n.getData("group"))===t.getData("group")&&this.place_drag_in_drop(t,n)};for(var o in this.get("drops")){var u=this.get("drops")[o],a="dropzone group"+u.group+" place"+o,f=u.text.replace('"','"'),l='<div title="'+f+'" class="'+a+'">&nbsp;</div>',c=e.Node.create(l);n[u.group].append(c),c.setStyles({opacity:.5}),c.setData("xy",u.xy),c.setData("place",o),c.setData("inputid",u.fieldname.replace(":","_")),c.setData("group",u.group);var h=new e.DD.Drop({node:c,groups:[u.group]});h.on("drop:hit",s,this)}}},{NAME:i,ATTRS:{}}),e.Event.define("dragchange",{_event:e.UA.webkit||e.UA.ie?"keydown":"keypress",_keys:{32:"next",37:"previous",38:"previous",39:"next",40:"next",27:"remove"},_keyHandler:function(e,t){this._keys[e.keyCode]&&(e.direction=this._keys[e.keyCode],t.fire(e))},on:function(e,t,n){t._detacher=e.on(this._event,this._keyHandler,this,n)}}),M.qtype_ddimageortext.init_question=function(e){return new s(e)}},"@VERSION@",{requires:["node","dd","dd-drop","dd-constrain"]});