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define(["jquery","core/dragdrop","qtype_ddmarker/shapes"],function(a,b,c){"use strict";function d(a){this.dropzoneNo=a,this.svgEl=null,this.shape=c.make(this.getShapeType(),this.getLabel()),this.updateCoordinatesFromForm()}d.prototype.updateCoordinatesFromForm=function(a){var b=this.getCoordinates(),c="polygon"===this.shape.getType()&&this.shape.points.length;if(this.shape.getCoordinates()!==b&&this.shape.parse(b))if("polygon"===this.shape.getType()&&c!==this.shape.points.length){var d=this.isActive();this.removeFromSvg(),a&&(this.addToSvg(a),d&&this.setActive())}else this.updateSvgEl()},d.prototype.updateLabel=function(){var a=this.getLabel();this.shape.label!==a&&(this.shape.label=a,this.updateSvgEl())},d.prototype.changeShape=function(a){var b=this.getShapeType(),d=this.isActive();b!==this.shape.getType()&&(this.removeFromSvg(),this.shape=c.getSimilar(b,this.shape),a&&(this.addToSvg(a),d&&this.setActive()),this.setCoordinatesInForm())},d.prototype.addToSvg=function(a){if(null!==this.svgEl)throw new Error("this.svgEl already set");if(this.svgEl=this.shape.makeSvg(a),this.svgEl){this.svgEl.setAttribute("class","dropzone"),this.svgEl.setAttribute("data-dropzone-no",this.dropzoneNo);var b=this.shape.getHandlePositions();if(null!==b){var d=c.createSvgElement(this.svgEl,"circle");d.setAttribute("cx",b.moveHandle.x),d.setAttribute("cy",b.moveHandle.y),d.setAttribute("r",7),d.setAttribute("class","handle move");for(var e=0;e<b.editHandles.length;++e)this.makeEditHandle(e,b.editHandles[e])}}},d.prototype.makeEditHandle=function(a,b){var d=c.createSvgElement(this.svgEl,"rect");d.setAttribute("x",b.x-6),d.setAttribute("y",b.y-6),d.setAttribute("width",11),d.setAttribute("height",11),d.setAttribute("class","handle edit"),d.setAttribute("data-edit-handle-no",a)},d.prototype.removeFromSvg=function(){null!==this.svgEl&&(this.svgEl.parentNode.removeChild(this.svgEl),this.svgEl=null)},d.prototype.updateSvgEl=function(){if(null!==this.svgEl){this.shape.updateSvg(this.svgEl);var a=this.shape.getHandlePositions();if(null!==a){this.svgEl.childNodes[2].setAttribute("cx",a.moveHandle.x),this.svgEl.childNodes[2].setAttribute("cy",a.moveHandle.y);for(var b=0;b<a.editHandles.length;++b)this.svgEl.childNodes[3+b].setAttribute("x",a.editHandles[b].x-6),this.svgEl.childNodes[3+b].setAttribute("y",a.editHandles[b].y-6)}}},d.prototype.isActive=function(){return null!==this.svgEl&&this.svgEl.getAttribute("class").match(/\bactive\b/)},d.prototype.setActive=function(){var a=this.svgEl.parentNode;a.removeChild(this.svgEl),a.appendChild(this.svgEl),this.svgEl.setAttribute("class",this.svgEl.getAttribute("class")+" active")},d.prototype.setCoordinatesInForm=function(){e.form.setFormValue("drops",[this.dropzoneNo,"coords"],this.shape.getCoordinates())},d.prototype.getCoordinates=function(){return e.form.getFormValue("drops",[this.dropzoneNo,"coords"]).replace(/\s*/g,"")},d.prototype.getChoiceNo=function(){return e.form.getFormValue("drops",[this.dropzoneNo,"choice"])},d.prototype.getLabel=function(){return e.form.getMarkerText(this.getChoiceNo())},d.prototype.getShapeType=function(){return e.form.getFormValue("drops",[this.dropzoneNo,"shape"])},d.prototype.handleMove=function(c){var d=b.prepare(c);if(d.start){var e=this,f=d.x,g=d.y,h=this.makeDragProxy(d.x,d.y),i=a("fieldset#id_previewareaheader .dropbackground"),j=i.width(),k=i.height();b.start(c,a(h),function(a,b){e.shape.move(a-f,b-g,j,k),f=a,g=b,e.updateSvgEl(),e.setCoordinatesInForm()},function(){document.body.removeChild(h)})}},d.prototype.handleEdit=function(c,d,e){var f=b.prepare(c);if(f.start){"polygon"===this.shape.getType()&&(c.ctrlKey||c.metaKey)&&(this.shape.addNewPointAfter(d),this.removeFromSvg(),this.addToSvg(e),this.setActive());var g=this,h=f.x,i=f.y,j=this.makeDragProxy(f.x,f.y),k=a("fieldset#id_previewareaheader .dropbackground"),l=k.width(),m=k.height();b.start(c,a(j),function(a,b){g.shape.edit(d,a-h,b-i,l,m),h=a,i=b,g.updateSvgEl(),g.setCoordinatesInForm()},function(){document.body.removeChild(j),g.shape.normalizeShape(),g.updateSvgEl(),g.setCoordinatesInForm()})}},d.prototype.makeDragProxy=function(a,b){var c=document.createElement("div");return c.style.position="absolute",c.style.top=b+"px",c.style.left=a+"px",c.style.width="1px",c.style.height="1px",document.body.appendChild(c),c};var e={maxSizes:null,fp:null,noDropZones:null,dropZones:[],init:function(a){e.maxSizes=a,e.fp=e.filePickers(),e.noDropZones=e.form.getFormValue("nodropzone",[]),e.setupPreviewArea(),e.setOptionsForDragItemSelectors(),e.createShapes(),e.setupEventHandlers(),e.waitForFilePickerToInitialise()},setupPreviewArea:function(){a("fieldset#id_previewareaheader div.fcontainer").append('<div class="ddarea que ddmarker"> <div id="ddm-droparea" class="droparea"> <img class="dropbackground" /> <div id="ddm-dropzone" class="dropzones"> </div> </div></div>')},setOptionsForDragItemSelectors:function(){var b,c,d,f={0:""},g=e.form.getFormValue("noitems",[]),h=[];for(c=1;c<=g;c++)d=e.form.getMarkerText(c),""!==d&&(f[c]=a("<div/>").text(d).html());for(c=0;c<e.noDropZones;c++)b=a("#id_drops_"+c+"_choice"),h[c]=Number(b.val());for(c=0;c<e.noDropZones;c++){b=a("#id_drops_"+c+"_choice"),b.find("option").remove();for(var i in f){i=Number(i);var j='<option value="'+i+'">'+f[i]+"</option>";b.append(j);var k=b.find('option[value="'+i+'"]');if(0!==i)if(i!==h[c]){var l=e.form.getFormValue("drags",[i-1,"noofdrags"]);if(0!==Number(l))for(var m in h)if(Number(h[m])===i){if(1===Number(l)){k.attr("disabled",!0);break}l--}}else k.attr("selected",!0)}e.dropZones.length>0&&e.dropZones[c].updateLabel()}},createShapes:function(){for(var a=0;a<e.noDropZones;a++)e.dropZones[a]=new d(a)},setupEventHandlers:function(){a("fieldset#id_draggableitemheader").on("change input","input, select",function(){e.setOptionsForDragItemSelectors()}),a("fieldset#id_dropzoneheader").on("change input","input, select",function(a){var b=a.currentTarget.name.match(/^drops\[(\d+)]\[([a-z]*)]$/);if(b){var c=b[1],d=b[2],f=e.dropZones[c];switch(d){case"shape":f.changeShape(e.form.getSvg());break;case"coords":f.updateCoordinatesFromForm(e.form.getSvg());break;case"choice":f.updateLabel()}}});var b=a("fieldset#id_previewareaheader");b.on("click","g.dropzone",function(b){var c=a(b.currentTarget).data("dropzone-no"),d=e.dropZones[c].isActive();a(e.form.getSvg()).find(".dropzone.active").removeClass("active"),d||e.dropZones[c].setActive()}),b.on("mousedown touchstart",".dropzone .handle.move",function(b){var c=a(b.currentTarget).closest("g").data("dropzoneNo");e.dropZones[c].handleMove(b)}),b.on("mousedown touchstart",".dropzone .handle.edit",function(b){var c=a(b.currentTarget).closest("g").data("dropzoneNo"),d=b.currentTarget.getAttribute("data-edit-handle-no");e.dropZones[c].handleEdit(b,d,e.form.getSvg())})},waitForFilePickerToInitialise:function(){return null===e.fp.file("bgimage").href?void setTimeout(e.waitForFilePickerToInitialise,1e3):(a("form.mform").on("change","#id_bgimage",e.loadPreviewImage),void e.loadPreviewImage())},loadPreviewImage:function(){a("fieldset#id_previewareaheader .dropbackground").one("load",e.afterPreviewImageLoaded).attr("src",e.fp.file("bgimage").href)},afterPreviewImageLoaded:function(){var b=a("fieldset#id_previewareaheader .dropbackground");e.constrainImageSize(),a("#ddm-dropzone").css("position","relative").css("top",(b.height()+1)*-1),a("#ddm-droparea").css("height",b.height()+20),e.updateSvgDisplay()},constrainImageSize:function(){var b=a("fieldset#id_previewareaheader .dropbackground"),c=Math.max(b.width()/e.maxSizes.width,b.height()/e.maxSizes.height);c>1&&b.css("width",Math.floor(b.width()/c)),b.addClass("constrained")},updateSvgDisplay:function(){var b,c=a("fieldset#id_previewareaheader .dropbackground");if(e.form.getSvg())for(b=0;b<e.noDropZones;b++)e.dropZones[b].updateSvgEl();else for(a("#ddm-dropzone").html('<svg xmlns="http://www.w3.org/2000/svg" class="dropzones" width="'+c.outerWidth()+'" height="'+c.outerHeight()+'"></svg>'),b=0;b<e.noDropZones;b++)e.dropZones[b].addToSvg(e.form.getSvg())},form:{getMarkerText:function(a){if(0!==Number(a)){var b=e.form.getFormValue("drags",[a-1,"label"]);return b.replace(new RegExp("^\\s*(.*)\\s*$"),"$1")}return""},getSvg:function(){var b=a("fieldset#id_previewareaheader svg");return 0===b.length?null:b[0]},toNameWithIndex:function(a,b){for(var c=a,d=0;d<b.length;d++)c=c+"["+b[d]+"]";return c},getEl:function(b,c){var d=a("form.mform")[0];return d.elements[this.toNameWithIndex(b,c)]},getFormValue:function(a,b){var c=this.getEl(a,b);return"checkbox"===c.type?c.checked:c.value},setFormValue:function(a,b,c){var d=this.getEl(a,b);"checkbox"===d.type?d.checked=c:d.value=c}},filePickers:function(){var b,c;return void 0===b&&(b={},c={},a("form.mform input.filepickerhidden").each(function(a,d){b[d.value]=d.name,c[d.name]=d.parentNode})),{file:function(b){var d=a(c[b]).find("div.filepicker-filelist a");return d.length?{href:d.get(0).href,name:d.get(0).innerHTML}:{href:null,name:null}},name:function(a){return b[a]}}}};return{init:e.init}});