diff --git a/README.md b/README.md
index d5b71a8d6..b1adb2dcd 100644
--- a/README.md
+++ b/README.md
@@ -186,6 +186,7 @@ Check out the Wiki page for a list of available themes: [https://github.com/davi
 * __.execAction(action, opts)__: executes an built-in action via `document.execCommand`
 * __.createLink(opts)__: creates a link via the native `document.execCommand('createLink')` command
 * __.subscribe(event, listener)__: attaches a listener to a custom medium-editor event
+* __.unsubscribe(event, listener)__: detaches a listener from a custom medium-editor event
 * __.saveSelection()__: internally store the set of selected text
 * __.restoreSelection()__: restore the selection to what was selected when `saveSelection()` was called
 * __.selectAllContents()__: expands the selection to contain all text within the focused contenteditable
diff --git a/dist/js/medium-editor.js b/dist/js/medium-editor.js
index 040ade67f..ee5feba7c 100644
--- a/dist/js/medium-editor.js
+++ b/dist/js/medium-editor.js
@@ -1356,21 +1356,42 @@ var Events;
         },
 
         // custom events
-        attachCustomEvent: function (event, handler) {
+        attachCustomEvent: function (event, listener) {
             this.setupListener(event);
             // If we don't suppot this custom event, don't do anything
             if (this.listeners[event]) {
                 if (!this.customEvents[event]) {
                     this.customEvents[event] = [];
                 }
-                this.customEvents[event].push(handler);
+                this.customEvents[event].push(listener);
             }
         },
 
+        detachCustomEvent: function (event, listener) {
+            var index = this.indexOfCustomListener(event, listener);
+            if (index !== -1) {
+                this.customEvents[event].splice(index, 1);
+                // TODO: If array is empty, should detach internal listeners via destoryListener()
+            }
+        },
+
+        indexOfCustomListener: function (event, listener) {
+            if (!this.customEvents[event] || !this.customEvents[event].length) {
+                return -1;
+            }
+
+            return this.customEvents[event].indexOf(listener);
+        },
+
+        detachAllCustomEvents: function () {
+            this.customEvents = {};
+            // TODO: Should detach internal listeners here via destroyListener()
+        },
+
         triggerCustomEvent: function (name, data, editable) {
             if (this.customEvents[name]) {
-                this.customEvents[name].forEach(function (handler) {
-                    handler(data, editable);
+                this.customEvents[name].forEach(function (listener) {
+                    listener(data, editable);
                 });
             }
         },
@@ -3637,6 +3658,7 @@ function MediumEditor(elements, options) {
             }, this);
 
             this.events.detachAllDOMEvents();
+            this.events.detachAllCustomEvents();
         },
 
         on: function (target, event, listener, useCapture) {
@@ -3651,6 +3673,10 @@ function MediumEditor(elements, options) {
             this.events.attachCustomEvent(event, listener);
         },
 
+        unsubscribe: function (event, listener) {
+            this.events.detachCustomEvent(event, listener);
+        },
+
         delay: function (fn) {
             var self = this;
             return setTimeout(function () {
diff --git a/dist/js/medium-editor.min.js b/dist/js/medium-editor.min.js
index bd0f32812..d119fc3aa 100644
--- a/dist/js/medium-editor.min.js
+++ b/dist/js/medium-editor.min.js
@@ -1,2 +1,2 @@
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a=this.events.pop();a;)a[0].removeEventListener(a[1],a[2],a[3]),a=this.events.pop()},attachCustomEvent:function(a,b){this.setupListener(a),this.listeners[a]&&(this.customEvents[a]||(this.customEvents[a]=[]),this.customEvents[a].push(b))},triggerCustomEvent:function(a,b,c){this.customEvents[a]&&this.customEvents[a].forEach(function(a){a(b,c)})},setupListener:function(a){if(!this.listeners[a])switch(a){case"externalInteraction":this.attachDOMEvent(this.options.ownerDocument.body,"click",this.handleInteraction.bind(this),!0),this.attachDOMEvent(this.options.ownerDocument.body,"focus",this.handleInteraction.bind(this),!0),this.listeners[a]=!0;break;case"blur":this.setupListener("externalInteraction"),this.listeners[a]=!0;break;case"focus":this.setupListener("externalInteraction"),this.listeners[a]=!0;break;case"editableClick":this.base.elements.forEach(function(a){this.attachDOMEvent(a,"click",this.handleClick.bind(this))}.bind(this)),this.listeners[a]=!0;break;case"editableBlur":this.base.elements.forEach(function(a){this.attachDOMEvent(a,"blur",this.handleBlur.bind(this))}.bind(this)),this.listeners[a]=!0;break;case"editableKeypress":this.base.elements.forEach(function(a){this.attachDOMEvent(a,"keypress",this.handleKeypress.bind(this))}.bind(this)),this.listeners[a]=!0;break;case"editableKeyup":this.base.elements.forEach(function(a){this.attachDOMEvent(a,"keyup",this.handleKeyup.bind(this))}.bind(this)),this.listeners[a]=!0;break;case"editableKeydown":this.base.elements.forEach(function(a){this.attachDOMEvent(a,"keydown",this.handleKeydown.bind(this))}.bind(this)),this.listeners[a]=!0;break;case"editableKeydownEnter":this.setupListener("editableKeydown"),this.listeners[a]=!0;break;case"editableKeydownTab":this.setupListener("editableKeydown"),this.listeners[a]=!0;break;case"editableKeydownDelete":this.setupListener("editableKeydown"),this.listeners[a]=!0;break;case"editableMouseover":this.base.elements.forEach(function(a){this.attachDOMEvent(a,"mouseover",this.handleMouseover.bind(this))},this),this.listeners[a]=!0;break;case"editableDrag":this.base.elements.forEach(function(a){this.attachDOMEvent(a,"dragover",this.handleDragging.bind(this)),this.attachDOMEvent(a,"dragleave",this.handleDragging.bind(this))},this),this.listeners[a]=!0;break;case"editableDrop":this.base.elements.forEach(function(a){this.attachDOMEvent(a,"drop",this.handleDrop.bind(this))},this),this.listeners[a]=!0;break;case"editablePaste":this.base.elements.forEach(function(a){this.attachDOMEvent(a,"paste",this.handlePaste.bind(this))},this),this.listeners[a]=!0}},focusElement:function(a){a.focus(),this.updateFocus(a,{target:a,type:"focus"})},handleInteraction:function(a){this.updateFocus(a.target,a)},updateFocus:function(a,c){var d,e,g=this.options.contentWindow.getSelection(),h=this.base.toolbar?this.base.toolbar.getToolbarElement():null,i=this.base.getExtensionByName("anchor-preview"),j=i&&i.getPreviewElement?i.getPreviewElement():null,k=g.isCollapsed?null:f.getSelectedParentElement(g.getRangeAt(0));this.base.elements.some(function(c){return!d&&c.getAttribute("data-medium-focused")&&(d=c),e||!b.isDescendant(c,a,!0)&&!b.isDescendant(c,k)||(e=c),!!d&&!!e},this);var l=!b.isDescendant(d,a,!0)&&!b.isDescendant(h,a,!0)&&!b.isDescendant(j,a,!0);e!==d&&(d&&l&&(d.removeAttribute("data-medium-focused"),this.triggerCustomEvent("blur",c,d)),e&&(e.setAttribute("data-medium-focused",!0),this.triggerCustomEvent("focus",c,e))),l&&this.triggerCustomEvent("externalInteraction",c)},handleClick:function(a){this.triggerCustomEvent("editableClick",a,a.currentTarget)},handleBlur:function(a){this.triggerCustomEvent("editableBlur",a,a.currentTarget)},handleKeypress:function(a){this.triggerCustomEvent("editableKeypress",a,a.currentTarget)},handleKeyup:function(a){this.triggerCustomEvent("editableKeyup",a,a.currentTarget)},handleMouseover:function(a){this.triggerCustomEvent("editableMouseover",a,a.currentTarget)},handleDragging:function(a){this.triggerCustomEvent("editableDrag",a,a.currentTarget)},handleDrop:function(a){this.triggerCustomEvent("editableDrop",a,a.currentTarget)},handlePaste:function(a){this.triggerCustomEvent("editablePaste",a,a.currentTarget)},handleKeydown:function(a){switch(this.triggerCustomEvent("editableKeydown",a,a.currentTarget),a.which){case b.keyCode.ENTER:this.triggerCustomEvent("editableKeydownEnter",a,a.currentTarget);break;case b.keyCode.TAB:this.triggerCustomEvent("editableKeydownTab",a,a.currentTarget);break;case b.keyCode.DELETE:case b.keyCode.BACKSPACE:this.triggerCustomEvent("editableKeydownDelete",a,a.currentTarget)}}}}();var h;!function(){h=function(a,b){this.options=a,this.name=a.name,this.init(b)},h.prototype={init:function(a){this.base=a,this.button=this.createButton(),this.base.on(this.button,"click",this.handleClick.bind(this)),this.options.key&&this.base.subscribe("editableKeydown",this.handleKeydown.bind(this))},getButton:function(){return this.button},getAction:function(){return"function"==typeof this.options.action?this.options.action(this.base.options):this.options.action},getAria:function(){return"function"==typeof this.options.aria?this.options.aria(this.base.options):this.options.aria},getTagNames:function(){return"function"==typeof this.options.tagNames?this.options.tagNames(this.base.options):this.options.tagNames},createButton:function(){var a=this.base.options.ownerDocument.createElement("button"),b=this.options.contentDefault;return a.classList.add("medium-editor-action"),a.classList.add("medium-editor-action-"+this.name),a.setAttribute("data-action",this.getAction()),a.setAttribute("aria-label",this.getAria()),this.base.options.buttonLabels&&("fontawesome"===this.base.options.buttonLabels&&this.options.contentFA?b=this.options.contentFA:"object"==typeof this.base.options.buttonLabels&&this.base.options.buttonLabels[this.name]&&(b=this.base.options.buttonLabels[this.options.name])),a.innerHTML=b,a},handleKeydown:function(a){var b,c;(a.ctrlKey||a.metaKey)&&(b=String.fromCharCode(a.which||a.keyCode).toLowerCase(),this.options.key===b&&(a.preventDefault(),a.stopPropagation(),c=this.getAction(),c&&this.base.execAction(c)))},handleClick:function(a){a.preventDefault(),a.stopPropagation();var b=this.getAction();b&&this.base.execAction(b)},isActive:function(){return this.button.classList.contains(this.base.options.activeButtonClass)},setInactive:function(){this.button.classList.remove(this.base.options.activeButtonClass),delete this.knownState},setActive:function(){this.button.classList.add(this.base.options.activeButtonClass),delete this.knownState},queryCommandState:function(){var a=null;return this.options.useQueryState&&(a=this.base.queryCommandState(this.getAction())),a},isAlreadyApplied:function(a){var b,c,d=!1,e=this.getTagNames();return this.knownState===!1||this.knownState===!0?this.knownState:(e&&e.length>0&&a.tagName&&(d=-1!==e.indexOf(a.tagName.toLowerCase())),!d&&this.options.style&&(b=this.options.style.value.split("|"),c=this.base.options.contentWindow.getComputedStyle(a,null).getPropertyValue(this.options.style.prop),b.forEach(function(a){this.knownState||(d=-1!==c.indexOf(a),(d||"text-decoration"!==this.options.style.prop)&&(this.knownState=d))},this)),d)}}}();var i;!function(){function a(){return[[new RegExp(/<[^>]*docs-internal-guid[^>]*>/gi),""],[new RegExp(/<\/b>(<br[^>]*>)?$/gi),""],[new RegExp(/<span class="Apple-converted-space">\s+<\/span>/g)," "],[new RegExp(/<br class="Apple-interchange-newline">/g),"<br>"],[new RegExp(/<span[^>]*(font-style:italic;font-weight:bold|font-weight:bold;font-style:italic)[^>]*>/gi),'<span class="replace-with italic bold">'],[new RegExp(/<span[^>]*font-style:italic[^>]*>/gi),'<span class="replace-with italic">'],[new RegExp(/<span[^>]*font-weight:bold[^>]*>/gi),'<span class="replace-with bold">'],[new RegExp(/&lt;(\/?)(i|b|a)&gt;/gi),"<$1$2>"],[new RegExp(/&lt;a\s+href=(&quot;|&rdquo;|&ldquo;|“|”)([^&]+)(&quot;|&rdquo;|&ldquo;|“|”)&gt;/gi),'<a href="$2">'],[new RegExp(/<\/p>\n+/gi),"</p>"],[new RegExp(/\n+<p/gi),"<p"],[new RegExp(/<\/?o:[a-z]*>/gi),""]]}i=function(a,b){this.base=a,this.options=b,(this.options.forcePlainText||this.options.cleanPastedHTML)&&this.base.subscribe("editablePaste",this.handlePaste.bind(this))},i.prototype={handlePaste:function(a,c){var d,e,f="",g="text/html",h="text/plain";if(this.options.contentWindow.clipboardData&&void 0===a.clipboardData&&(a.clipboardData=this.options.contentWindow.clipboardData,g="Text",h="Text"),a.clipboardData&&a.clipboardData.getData&&!a.defaultPrevented){if(a.preventDefault(),this.options.cleanPastedHTML&&a.clipboardData.getData(g))return this.cleanPaste(a.clipboardData.getData(g));if(this.options.disableReturn||c.getAttribute("data-disable-return"))f=b.htmlEntities(a.clipboardData.getData(h));else if(d=a.clipboardData.getData(h).split(/[\r\n]+/g),d.length>1)for(e=0;e<d.length;e+=1)""!==d[e]&&(f+="<p>"+b.htmlEntities(d[e])+"</p>");else f=b.htmlEntities(d[0]);b.insertHTMLCommand(this.options.ownerDocument,f)}},cleanPaste:function(c){var d,e,g,h=f.getSelectionElement(this.options.contentWindow),i=/<p|<br|<div/.test(c),j=a().concat(this.options.cleanReplacements||[]);for(d=0;d<j.length;d+=1)c=c.replace(j[d][0],j[d][1]);if(i){e=c.split("<br><br>"),this.pasteHTML("<p>"+e.join("</p><p>")+"</p>");try{this.options.ownerDocument.execCommand("insertText",!1,"\n")}catch(k){}for(e=h.querySelectorAll("a,p,div,br"),d=0;d<e.length;d+=1)switch(g=e[d],g.innerHTML=g.innerHTML.replace(/\n/gi," "),g.tagName.toLowerCase()){case"a":this.options.targetBlank&&b.setTargetBlank(g);break;case"p":case"div":this.filterCommonBlocks(g);break;case"br":this.filterLineBreak(g)}}else this.pasteHTML(c)},pasteHTML:function(a,c){c=b.defaults({},c,this.options);var d,e,f,g,h=this.options.ownerDocument.createDocumentFragment();for(h.appendChild(this.options.ownerDocument.createElement("body")),g=h.querySelector("body"),g.innerHTML=a,this.cleanupSpans(g),d=g.querySelectorAll("*"),f=0;f<d.length;f+=1)e=d[f],b.cleanupAttrs(e,c.cleanAttrs),b.cleanupTags(e,c.cleanTags);b.insertHTMLCommand(this.options.ownerDocument,g.innerHTML.replace(/&nbsp;/g," "))},isCommonBlock:function(a){return a&&("p"===a.tagName.toLowerCase()||"div"===a.tagName.toLowerCase())},filterCommonBlocks:function(a){/^\s*$/.test(a.textContent)&&a.parentNode&&a.parentNode.removeChild(a)},filterLineBreak:function(a){this.isCommonBlock(a.previousElementSibling)?this.removeWithParent(a):!this.isCommonBlock(a.parentNode)||a.parentNode.firstChild!==a&&a.parentNode.lastChild!==a?a.parentNode&&1===a.parentNode.childElementCount&&""===a.parentNode.textContent&&this.removeWithParent(a):this.removeWithParent(a)},removeWithParent:function(a){a&&a.parentNode&&(a.parentNode.parentNode&&1===a.parentNode.childElementCount?a.parentNode.parentNode.removeChild(a.parentNode):a.parentNode.removeChild(a))},cleanupSpans:function(a){var c,d,e,f=a.querySelectorAll(".replace-with"),g=function(a){return a&&"#text"!==a.nodeName&&"false"===a.getAttribute("contenteditable")};for(c=0;c<f.length;c+=1)d=f[c],e=this.options.ownerDocument.createElement(d.classList.contains("bold")?"b":"i"),e.innerHTML=d.classList.contains("bold")&&d.classList.contains("italic")?"<i>"+d.innerHTML+"</i>":d.innerHTML,d.parentNode.replaceChild(e,d);for(f=a.querySelectorAll("span"),c=0;c<f.length;c+=1){if(d=f[c],b.traverseUp(d,g))return!1;/^\s*$/.test()?d.parentNode.removeChild(d):d.parentNode.replaceChild(this.options.ownerDocument.createTextNode(d.textContent),d)}}}}();var j;!function(){function a(){this.parent=!0,this.options={name:"anchor",action:"createLink",aria:"link",tagNames:["a"],contentDefault:"<b>#</b>",contentFA:'<i class="fa fa-link"></i>'},this.name="anchor",this.hasForm=!0}a.prototype={formSaveLabel:"&#10003;",formCloseLabel:"&times;",handleClick:function(a){a.preventDefault(),a.stopPropagation();var c=f.getSelectedParentElement(b.getSelectionRange(this.base.options.ownerDocument));return c.tagName&&"a"===c.tagName.toLowerCase()?this.base.execAction("unlink"):(this.isDisplayed()||this.showForm(),!1)},getForm:function(){return this.form||(this.form=this.createForm()),this.form},getTemplate:function(){var a=['<input type="text" class="medium-editor-toolbar-input" placeholder="',this.base.options.anchorInputPlaceholder,'">'];return a.push('<a href="#" class="medium-editor-toolbar-save">',"fontawesome"===this.base.options.buttonLabels?'<i class="fa fa-check"></i>':this.formSaveLabel,"</a>"),a.push('<a href="#" class="medium-editor-toolbar-close">',"fontawesome"===this.base.options.buttonLabels?'<i class="fa fa-times"></i>':this.formCloseLabel,"</a>"),this.base.options.anchorTarget&&a.push('<input type="checkbox" class="medium-editor-toolbar-anchor-target">',"<label>",this.base.options.anchorInputCheckboxLabel,"</label>"),this.base.options.anchorButton&&a.push('<input type="checkbox" class="medium-editor-toolbar-anchor-button">',"<label>Button</label>"),a.join("")},isDisplayed:function(){return"block"===this.getForm().style.display},hideForm:function(){this.getForm().style.display="none",this.getInput().value=""},showForm:function(a){var b=this.getInput();this.base.saveSelection(),this.base.hideToolbarDefaultActions(),this.getForm().style.display="block",this.base.setToolbarPosition(),b.value=a||"",b.focus()},deactivate:function(){return this.form?(this.form.parentNode&&this.form.parentNode.removeChild(this.form),void delete this.form):!1},getFormOpts:function(){var a=this.getForm().querySelector(".medium-editor-toolbar-anchor-target"),b=this.getForm().querySelector(".medium-editor-toolbar-anchor-button"),c={url:this.getInput().value};return this.base.options.checkLinkFormat&&(c.url=this.checkLinkFormat(c.url)),c.target=a&&a.checked?"_blank":"_self",b&&b.checked&&(c.buttonClass=this.base.options.anchorButtonClass),c},doFormSave:function(){var a=this.getFormOpts();this.completeFormSave(a)},completeFormSave:function(a){this.base.restoreSelection(),this.base.createLink(a),this.base.checkSelection()},checkLinkFormat:function(a){var b=/^(https?|ftps?|rtmpt?):\/\/|mailto:/;return(b.test(a)?"":"http://")+a},doFormCancel:function(){this.base.restoreSelection(),this.base.checkSelection()},attachFormEvents:function(a){var b=a.querySelector(".medium-editor-toolbar-close"),c=a.querySelector(".medium-editor-toolbar-save"),d=a.querySelector(".medium-editor-toolbar-input");this.base.on(a,"click",this.handleFormClick.bind(this)),this.base.on(d,"keyup",this.handleTextboxKeyup.bind(this)),this.base.on(b,"click",this.handleCloseClick.bind(this)),this.base.on(c,"click",this.handleSaveClick.bind(this),!0)},createForm:function(){var a=this.base.options.ownerDocument,b=a.createElement("div");return b.className="medium-editor-toolbar-form",b.id="medium-editor-toolbar-form-anchor-"+this.base.id,b.innerHTML=this.getTemplate(),this.attachFormEvents(b),b},getInput:function(){return this.getForm().querySelector("input.medium-editor-toolbar-input")},handleTextboxKeyup:function(a){return a.keyCode===b.keyCode.ENTER?(a.preventDefault(),void this.doFormSave()):void(a.keyCode===b.keyCode.ESCAPE&&(a.preventDefault(),
-this.doFormCancel()))},handleFormClick:function(a){a.stopPropagation()},handleSaveClick:function(a){a.preventDefault(),this.doFormSave()},handleCloseClick:function(a){a.preventDefault(),this.doFormCancel()}},j=b.derives(h,a)}();var k;!function(){k=function(){this.parent=!0,this.name="anchor-preview"},k.prototype={previewValueSelector:"i",init:function(a){this.base=a,this.anchorPreview=this.createPreview(),this.base.options.elementsContainer.appendChild(this.anchorPreview),this.attachToEditables()},getPreviewElement:function(){return this.anchorPreview},createPreview:function(){var a=this.base.options.ownerDocument.createElement("div");return a.id="medium-editor-anchor-preview-"+this.base.id,a.className="medium-editor-anchor-preview",a.innerHTML=this.getTemplate(),this.base.on(a,"click",this.handleClick.bind(this)),a},getTemplate:function(){return'<div class="medium-editor-toolbar-anchor-preview" id="medium-editor-toolbar-anchor-preview">    <i class="medium-editor-toolbar-anchor-preview-inner"></i></div>'},deactivate:function(){this.anchorPreview&&(this.anchorPreview.parentNode&&this.anchorPreview.parentNode.removeChild(this.anchorPreview),delete this.anchorPreview)},hidePreview:function(){this.anchorPreview.classList.remove("medium-editor-anchor-preview-active"),this.activeAnchor=null},showPreview:function(a){return this.anchorPreview.classList.contains("medium-editor-anchor-preview-active")||a.getAttribute("data-disable-preview")?!0:(this.previewValueSelector&&(this.anchorPreview.querySelector(this.previewValueSelector).textContent=a.attributes.href.value),this.anchorPreview.classList.add("medium-toolbar-arrow-over"),this.anchorPreview.classList.remove("medium-toolbar-arrow-under"),this.anchorPreview.classList.contains("medium-editor-anchor-preview-active")||this.anchorPreview.classList.add("medium-editor-anchor-preview-active"),this.activeAnchor=a,this.positionPreview(),this.attachPreviewHandlers(),this)},positionPreview:function(){var a,b,c=40,d=this.activeAnchor.getBoundingClientRect(),e=(d.left+d.right)/2;a=this.anchorPreview.offsetWidth/2,b=this.base.options.diffLeft-a,this.anchorPreview.style.top=Math.round(c+d.bottom-this.base.options.diffTop+this.base.options.contentWindow.pageYOffset-this.anchorPreview.offsetHeight)+"px",this.anchorPreview.style.left=a>e?b+a+"px":this.base.options.contentWindow.innerWidth-e<a?this.base.options.contentWindow.innerWidth+b-a+"px":b+e+"px"},attachToEditables:function(){this.base.subscribe("editableMouseover",this.handleEditableMouseover.bind(this))},handleClick:function(){var a=this.base.getExtensionByName("anchor"),b=this.activeAnchor;a&&b&&(this.base.selectElement(this.activeAnchor),this.base.delay(function(){b&&(a.showForm(b.attributes.href.value),b=null)}.bind(this))),this.hidePreview()},handleAnchorMouseout:function(){this.anchorToPreview=null,this.base.off(this.activeAnchor,"mouseout",this.instance_handleAnchorMouseout),this.instance_handleAnchorMouseout=null},handleEditableMouseover:function(a){if(a.target&&"a"===a.target.tagName.toLowerCase()){if(!/href=["']\S+["']/.test(a.target.outerHTML)||/href=["']#\S+["']/.test(a.target.outerHTML))return!0;if(this.base.toolbar&&this.base.toolbar.isDisplayed())return!0;this.activeAnchor&&this.activeAnchor!==a.target&&this.detachPreviewHandlers(),this.anchorToPreview=a.target,this.instance_handleAnchorMouseout=this.handleAnchorMouseout.bind(this),this.base.on(this.anchorToPreview,"mouseout",this.instance_handleAnchorMouseout),this.base.delay(function(){this.anchorToPreview&&this.showPreview(this.anchorToPreview)}.bind(this))}},handlePreviewMouseover:function(){this.lastOver=(new Date).getTime(),this.hovering=!0},handlePreviewMouseout:function(a){a.relatedTarget&&/anchor-preview/.test(a.relatedTarget.className)||(this.hovering=!1)},updatePreview:function(){if(this.hovering)return!0;var a=(new Date).getTime()-this.lastOver;a>this.base.options.anchorPreviewHideDelay&&this.detachPreviewHandlers()},detachPreviewHandlers:function(){clearInterval(this.interval_timer),this.instance_handlePreviewMouseover&&(this.base.off(this.anchorPreview,"mouseover",this.instance_handlePreviewMouseover),this.base.off(this.anchorPreview,"mouseout",this.instance_handlePreviewMouseout),this.activeAnchor&&(this.base.off(this.activeAnchor,"mouseover",this.instance_handlePreviewMouseover),this.base.off(this.activeAnchor,"mouseout",this.instance_handlePreviewMouseout))),this.hidePreview(),this.hovering=this.instance_handlePreviewMouseover=this.instance_handlePreviewMouseout=null},attachPreviewHandlers:function(){this.lastOver=(new Date).getTime(),this.hovering=!0,this.instance_handlePreviewMouseover=this.handlePreviewMouseover.bind(this),this.instance_handlePreviewMouseout=this.handlePreviewMouseout.bind(this),this.interval_timer=setInterval(this.updatePreview.bind(this),200),this.base.on(this.anchorPreview,"mouseover",this.instance_handlePreviewMouseover),this.base.on(this.anchorPreview,"mouseout",this.instance_handlePreviewMouseout),this.base.on(this.activeAnchor,"mouseover",this.instance_handlePreviewMouseover),this.base.on(this.activeAnchor,"mouseout",this.instance_handlePreviewMouseout)}}}();var l;!function(){l=function(a){this.base=a,this.options=a.options,this.initThrottledMethods()},l.prototype={createToolbar:function(){var a=this.base.options.ownerDocument.createElement("div");return a.id="medium-editor-toolbar-"+this.base.id,a.className="medium-editor-toolbar",a.className+=this.options.staticToolbar?" static-toolbar":" stalker-toolbar",a.appendChild(this.createToolbarButtons()),this.base.commands.forEach(function(b){b.hasForm&&a.appendChild(b.getForm())}),this.attachEventHandlers(),a},createToolbarButtons:function(){var a,c,d,e=this.base.options.ownerDocument.createElement("ul");return e.id="medium-editor-toolbar-actions"+this.base.id,e.className="medium-editor-toolbar-actions clearfix",e.style.display="block",this.base.commands.forEach(function(d){"function"==typeof d.getButton&&(c=d.getButton(this.base),a=this.base.options.ownerDocument.createElement("li"),b.isElement(c)?a.appendChild(c):a.innerHTML=c,e.appendChild(a))}.bind(this)),d=e.querySelectorAll("button"),d.length>0&&(d[0].classList.add(this.options.firstButtonClass),d[d.length-1].classList.add(this.options.lastButtonClass)),e},deactivate:function(){this.toolbar&&(this.toolbar.parentNode&&this.toolbar.parentNode.removeChild(this.toolbar),delete this.toolbar)},getToolbarElement:function(){return this.toolbar||(this.toolbar=this.createToolbar()),this.toolbar},getToolbarActionsElement:function(){return this.getToolbarElement().querySelector(".medium-editor-toolbar-actions")},initThrottledMethods:function(){this.throttledPositionToolbar=b.throttle(function(){this.base.isActive&&this.positionToolbarIfShown()}.bind(this))},attachEventHandlers:function(){this.base.subscribe("blur",this.handleBlur.bind(this)),this.base.subscribe("focus",this.handleFocus.bind(this)),this.base.subscribe("editableClick",this.handleEditableClick.bind(this)),this.base.subscribe("editableKeyup",this.handleEditableKeyup.bind(this)),this.base.on(this.options.ownerDocument.documentElement,"mouseup",this.handleDocumentMouseup.bind(this)),this.options.staticToolbar&&this.options.stickyToolbar&&this.base.on(this.options.contentWindow,"scroll",this.handleWindowScroll.bind(this),!0),this.base.on(this.options.contentWindow,"resize",this.handleWindowResize.bind(this))},handleWindowScroll:function(){this.positionToolbarIfShown()},handleWindowResize:function(){this.throttledPositionToolbar()},handleDocumentMouseup:function(a){return 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this.options.onHideToolbar&&this.options.onHideToolbar())},isToolbarDefaultActionsDisplayed:function(){return"block"===this.getToolbarActionsElement().style.display},hideToolbarDefaultActions:function(){this.isToolbarDefaultActionsDisplayed()&&(this.getToolbarActionsElement().style.display="none")},showToolbarDefaultActions:function(){this.hideExtensionForms(),this.isToolbarDefaultActionsDisplayed()||(this.getToolbarActionsElement().style.display="block"),this.base.delay(function(){this.showToolbar()}.bind(this))},hideExtensionForms:function(){this.base.commands.forEach(function(a){a.hasForm&&a.isDisplayed()&&a.hideForm()})},multipleBlockElementsSelected:function(){var a=f.getSelectionHtml.call(this).replace(/<[\S]+><\/[\S]+>/gim,""),b=a.match(/<(p|h[1-6]|blockquote)[^>]*>/g);return!!b&&b.length>1},modifySelection:function(){var a=this.options.contentWindow.getSelection(),c=a.getRangeAt(0);if(this.options.standardizeSelectionStart&&c.startContainer.nodeValue&&c.startOffset===c.startContainer.nodeValue.length){var d=b.findAdjacentTextNodeWithContent(f.getSelectionElement(this.options.contentWindow),c.startContainer,this.options.ownerDocument);if(d){for(var e=0;0===d.nodeValue.substr(e,1).trim().length;)e+=1;var g=this.options.ownerDocument.createRange();g.setStart(d,e),g.setEnd(c.endContainer,c.endOffset),a.removeAllRanges(),a.addRange(g),c=g}}},checkState:function(){if(!this.base.preventSelectionUpdates){if(!this.getFocusedElement()||f.selectionInContentEditableFalse(this.options.contentWindow))return void this.hideToolbar();var a=f.getSelectionElement(this.options.contentWindow);if(!a||-1===this.base.elements.indexOf(a)||a.getAttribute("data-disable-toolbar"))return void this.hideToolbar();if(this.options.updateOnEmptySelection&&this.options.staticToolbar)return void 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n;return function(){n={}}(),function(){function o(a,c){if(this.options.disableReturn||c.getAttribute("data-disable-return"))a.preventDefault();else if(this.options.disableDoubleReturn||this.getAttribute("data-disable-double-return")){var d=b.getSelectionStart(this.options.ownerDocument);d&&""===d.textContent.trim()&&a.preventDefault()}}function p(a){var c=b.getSelectionStart(this.options.ownerDocument),d=c&&c.tagName.toLowerCase();"pre"===d&&(a.preventDefault(),b.insertHTMLCommand(this.options.ownerDocument,"    ")),b.isListItem(c)&&(a.preventDefault(),a.shiftKey?this.options.ownerDocument.execCommand("outdent",!1,null):this.options.ownerDocument.execCommand("indent",!1,null))}function q(a){var 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r(a){var b="medium-editor-dragover";a.preventDefault(),a.dataTransfer.dropEffect="copy","dragover"===a.type?a.target.classList.add(b):"dragleave"===a.type&&a.target.classList.remove(b)}function s(a){var c,d="medium-editor-dragover";a.preventDefault(),a.stopPropagation(),a.dataTransfer.files&&(c=Array.prototype.slice.call(a.dataTransfer.files,0),c.some(function(a){if(a.type.match("image")){var c,d;c=new FileReader,c.readAsDataURL(a),d="medium-img-"+ +new Date,b.insertHTMLCommand(this.options.ownerDocument,'<img class="medium-image-loading" id="'+d+'" />'),c.onload=function(){var a=this.options.ownerDocument.getElementById(d);a&&(a.removeAttribute("id"),a.removeAttribute("class"),a.src=c.result)}.bind(this)}}.bind(this))),a.target.classList.remove(d)}function t(a){var 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l=!b.isDescendant(d,a,!0)&&!b.isDescendant(h,a,!0)&&!b.isDescendant(j,a,!0);e!==d&&(d&&l&&(d.removeAttribute("data-medium-focused"),this.triggerCustomEvent("blur",c,d)),e&&(e.setAttribute("data-medium-focused",!0),this.triggerCustomEvent("focus",c,e))),l&&this.triggerCustomEvent("externalInteraction",c)},handleClick:function(a){this.triggerCustomEvent("editableClick",a,a.currentTarget)},handleBlur:function(a){this.triggerCustomEvent("editableBlur",a,a.currentTarget)},handleKeypress:function(a){this.triggerCustomEvent("editableKeypress",a,a.currentTarget)},handleKeyup:function(a){this.triggerCustomEvent("editableKeyup",a,a.currentTarget)},handleMouseover:function(a){this.triggerCustomEvent("editableMouseover",a,a.currentTarget)},handleDragging:function(a){this.triggerCustomEvent("editableDrag",a,a.currentTarget)},handleDrop:function(a){this.triggerCustomEvent("editableDrop",a,a.currentTarget)},handlePaste:function(a){this.triggerCustomEvent("editablePaste",a,a.currentTarget)},handleKeydown:function(a){switch(this.triggerCustomEvent("editableKeydown",a,a.currentTarget),a.which){case b.keyCode.ENTER:this.triggerCustomEvent("editableKeydownEnter",a,a.currentTarget);break;case b.keyCode.TAB:this.triggerCustomEvent("editableKeydownTab",a,a.currentTarget);break;case b.keyCode.DELETE:case b.keyCode.BACKSPACE:this.triggerCustomEvent("editableKeydownDelete",a,a.currentTarget)}}}}();var h;!function(){h=function(a,b){this.options=a,this.name=a.name,this.init(b)},h.prototype={init:function(a){this.base=a,this.button=this.createButton(),this.base.on(this.button,"click",this.handleClick.bind(this)),this.options.key&&this.base.subscribe("editableKeydown",this.handleKeydown.bind(this))},getButton:function(){return this.button},getAction:function(){return"function"==typeof this.options.action?this.options.action(this.base.options):this.options.action},getAria:function(){return"function"==typeof this.options.aria?this.options.aria(this.base.options):this.options.aria},getTagNames:function(){return"function"==typeof this.options.tagNames?this.options.tagNames(this.base.options):this.options.tagNames},createButton:function(){var a=this.base.options.ownerDocument.createElement("button"),b=this.options.contentDefault;return a.classList.add("medium-editor-action"),a.classList.add("medium-editor-action-"+this.name),a.setAttribute("data-action",this.getAction()),a.setAttribute("aria-label",this.getAria()),this.base.options.buttonLabels&&("fontawesome"===this.base.options.buttonLabels&&this.options.contentFA?b=this.options.contentFA:"object"==typeof this.base.options.buttonLabels&&this.base.options.buttonLabels[this.name]&&(b=this.base.options.buttonLabels[this.options.name])),a.innerHTML=b,a},handleKeydown:function(a){var b,c;(a.ctrlKey||a.metaKey)&&(b=String.fromCharCode(a.which||a.keyCode).toLowerCase(),this.options.key===b&&(a.preventDefault(),a.stopPropagation(),c=this.getAction(),c&&this.base.execAction(c)))},handleClick:function(a){a.preventDefault(),a.stopPropagation();var b=this.getAction();b&&this.base.execAction(b)},isActive:function(){return this.button.classList.contains(this.base.options.activeButtonClass)},setInactive:function(){this.button.classList.remove(this.base.options.activeButtonClass),delete this.knownState},setActive:function(){this.button.classList.add(this.base.options.activeButtonClass),delete this.knownState},queryCommandState:function(){var a=null;return this.options.useQueryState&&(a=this.base.queryCommandState(this.getAction())),a},isAlreadyApplied:function(a){var b,c,d=!1,e=this.getTagNames();return this.knownState===!1||this.knownState===!0?this.knownState:(e&&e.length>0&&a.tagName&&(d=-1!==e.indexOf(a.tagName.toLowerCase())),!d&&this.options.style&&(b=this.options.style.value.split("|"),c=this.base.options.contentWindow.getComputedStyle(a,null).getPropertyValue(this.options.style.prop),b.forEach(function(a){this.knownState||(d=-1!==c.indexOf(a),(d||"text-decoration"!==this.options.style.prop)&&(this.knownState=d))},this)),d)}}}();var i;!function(){function a(){return[[new RegExp(/<[^>]*docs-internal-guid[^>]*>/gi),""],[new RegExp(/<\/b>(<br[^>]*>)?$/gi),""],[new RegExp(/<span class="Apple-converted-space">\s+<\/span>/g)," "],[new RegExp(/<br class="Apple-interchange-newline">/g),"<br>"],[new RegExp(/<span[^>]*(font-style:italic;font-weight:bold|font-weight:bold;font-style:italic)[^>]*>/gi),'<span class="replace-with italic bold">'],[new RegExp(/<span[^>]*font-style:italic[^>]*>/gi),'<span class="replace-with italic">'],[new RegExp(/<span[^>]*font-weight:bold[^>]*>/gi),'<span class="replace-with bold">'],[new RegExp(/&lt;(\/?)(i|b|a)&gt;/gi),"<$1$2>"],[new RegExp(/&lt;a\s+href=(&quot;|&rdquo;|&ldquo;|“|”)([^&]+)(&quot;|&rdquo;|&ldquo;|“|”)&gt;/gi),'<a href="$2">'],[new RegExp(/<\/p>\n+/gi),"</p>"],[new RegExp(/\n+<p/gi),"<p"],[new RegExp(/<\/?o:[a-z]*>/gi),""]]}i=function(a,b){this.base=a,this.options=b,(this.options.forcePlainText||this.options.cleanPastedHTML)&&this.base.subscribe("editablePaste",this.handlePaste.bind(this))},i.prototype={handlePaste:function(a,c){var d,e,f="",g="text/html",h="text/plain";if(this.options.contentWindow.clipboardData&&void 0===a.clipboardData&&(a.clipboardData=this.options.contentWindow.clipboardData,g="Text",h="Text"),a.clipboardData&&a.clipboardData.getData&&!a.defaultPrevented){if(a.preventDefault(),this.options.cleanPastedHTML&&a.clipboardData.getData(g))return this.cleanPaste(a.clipboardData.getData(g));if(this.options.disableReturn||c.getAttribute("data-disable-return"))f=b.htmlEntities(a.clipboardData.getData(h));else if(d=a.clipboardData.getData(h).split(/[\r\n]+/g),d.length>1)for(e=0;e<d.length;e+=1)""!==d[e]&&(f+="<p>"+b.htmlEntities(d[e])+"</p>");else f=b.htmlEntities(d[0]);b.insertHTMLCommand(this.options.ownerDocument,f)}},cleanPaste:function(c){var d,e,g,h=f.getSelectionElement(this.options.contentWindow),i=/<p|<br|<div/.test(c),j=a().concat(this.options.cleanReplacements||[]);for(d=0;d<j.length;d+=1)c=c.replace(j[d][0],j[d][1]);if(i){e=c.split("<br><br>"),this.pasteHTML("<p>"+e.join("</p><p>")+"</p>");try{this.options.ownerDocument.execCommand("insertText",!1,"\n")}catch(k){}for(e=h.querySelectorAll("a,p,div,br"),d=0;d<e.length;d+=1)switch(g=e[d],g.innerHTML=g.innerHTML.replace(/\n/gi," "),g.tagName.toLowerCase()){case"a":this.options.targetBlank&&b.setTargetBlank(g);break;case"p":case"div":this.filterCommonBlocks(g);break;case"br":this.filterLineBreak(g)}}else this.pasteHTML(c)},pasteHTML:function(a,c){c=b.defaults({},c,this.options);var d,e,f,g,h=this.options.ownerDocument.createDocumentFragment();for(h.appendChild(this.options.ownerDocument.createElement("body")),g=h.querySelector("body"),g.innerHTML=a,this.cleanupSpans(g),d=g.querySelectorAll("*"),f=0;f<d.length;f+=1)e=d[f],b.cleanupAttrs(e,c.cleanAttrs),b.cleanupTags(e,c.cleanTags);b.insertHTMLCommand(this.options.ownerDocument,g.innerHTML.replace(/&nbsp;/g," "))},isCommonBlock:function(a){return a&&("p"===a.tagName.toLowerCase()||"div"===a.tagName.toLowerCase())},filterCommonBlocks:function(a){/^\s*$/.test(a.textContent)&&a.parentNode&&a.parentNode.removeChild(a)},filterLineBreak:function(a){this.isCommonBlock(a.previousElementSibling)?this.removeWithParent(a):!this.isCommonBlock(a.parentNode)||a.parentNode.firstChild!==a&&a.parentNode.lastChild!==a?a.parentNode&&1===a.parentNode.childElementCount&&""===a.parentNode.textContent&&this.removeWithParent(a):this.removeWithParent(a)},removeWithParent:function(a){a&&a.parentNode&&(a.parentNode.parentNode&&1===a.parentNode.childElementCount?a.parentNode.parentNode.removeChild(a.parentNode):a.parentNode.removeChild(a))},cleanupSpans:function(a){var c,d,e,f=a.querySelectorAll(".replace-with"),g=function(a){return a&&"#text"!==a.nodeName&&"false"===a.getAttribute("contenteditable")};for(c=0;c<f.length;c+=1)d=f[c],e=this.options.ownerDocument.createElement(d.classList.contains("bold")?"b":"i"),e.innerHTML=d.classList.contains("bold")&&d.classList.contains("italic")?"<i>"+d.innerHTML+"</i>":d.innerHTML,d.parentNode.replaceChild(e,d);for(f=a.querySelectorAll("span"),c=0;c<f.length;c+=1){if(d=f[c],b.traverseUp(d,g))return!1;/^\s*$/.test()?d.parentNode.removeChild(d):d.parentNode.replaceChild(this.options.ownerDocument.createTextNode(d.textContent),d)}}}}();var j;!function(){function a(){this.parent=!0,this.options={name:"anchor",action:"createLink",aria:"link",tagNames:["a"],contentDefault:"<b>#</b>",contentFA:'<i class="fa fa-link"></i>'},this.name="anchor",this.hasForm=!0}a.prototype={formSaveLabel:"&#10003;",formCloseLabel:"&times;",handleClick:function(a){a.preventDefault(),a.stopPropagation();var c=f.getSelectedParentElement(b.getSelectionRange(this.base.options.ownerDocument));return c.tagName&&"a"===c.tagName.toLowerCase()?this.base.execAction("unlink"):(this.isDisplayed()||this.showForm(),!1)},getForm:function(){return this.form||(this.form=this.createForm()),this.form},getTemplate:function(){var a=['<input type="text" class="medium-editor-toolbar-input" placeholder="',this.base.options.anchorInputPlaceholder,'">'];return a.push('<a href="#" class="medium-editor-toolbar-save">',"fontawesome"===this.base.options.buttonLabels?'<i class="fa fa-check"></i>':this.formSaveLabel,"</a>"),a.push('<a href="#" class="medium-editor-toolbar-close">',"fontawesome"===this.base.options.buttonLabels?'<i class="fa fa-times"></i>':this.formCloseLabel,"</a>"),this.base.options.anchorTarget&&a.push('<input type="checkbox" class="medium-editor-toolbar-anchor-target">',"<label>",this.base.options.anchorInputCheckboxLabel,"</label>"),this.base.options.anchorButton&&a.push('<input type="checkbox" class="medium-editor-toolbar-anchor-button">',"<label>Button</label>"),a.join("")},isDisplayed:function(){return"block"===this.getForm().style.display},hideForm:function(){this.getForm().style.display="none",this.getInput().value=""},showForm:function(a){var b=this.getInput();this.base.saveSelection(),this.base.hideToolbarDefaultActions(),this.getForm().style.display="block",this.base.setToolbarPosition(),b.value=a||"",b.focus()},deactivate:function(){return this.form?(this.form.parentNode&&this.form.parentNode.removeChild(this.form),void delete this.form):!1},getFormOpts:function(){var a=this.getForm().querySelector(".medium-editor-toolbar-anchor-target"),b=this.getForm().querySelector(".medium-editor-toolbar-anchor-button"),c={url:this.getInput().value};return this.base.options.checkLinkFormat&&(c.url=this.checkLinkFormat(c.url)),c.target=a&&a.checked?"_blank":"_self",b&&b.checked&&(c.buttonClass=this.base.options.anchorButtonClass),c},doFormSave:function(){var a=this.getFormOpts();this.completeFormSave(a)},completeFormSave:function(a){this.base.restoreSelection(),this.base.createLink(a),this.base.checkSelection()},checkLinkFormat:function(a){var b=/^(https?|ftps?|rtmpt?):\/\/|mailto:/;return(b.test(a)?"":"http://")+a},doFormCancel:function(){this.base.restoreSelection(),this.base.checkSelection()},attachFormEvents:function(a){var b=a.querySelector(".medium-editor-toolbar-close"),c=a.querySelector(".medium-editor-toolbar-save"),d=a.querySelector(".medium-editor-toolbar-input");this.base.on(a,"click",this.handleFormClick.bind(this)),this.base.on(d,"keyup",this.handleTextboxKeyup.bind(this)),this.base.on(b,"click",this.handleCloseClick.bind(this)),this.base.on(c,"click",this.handleSaveClick.bind(this),!0)},createForm:function(){var a=this.base.options.ownerDocument,b=a.createElement("div");return b.className="medium-editor-toolbar-form",b.id="medium-editor-toolbar-form-anchor-"+this.base.id,b.innerHTML=this.getTemplate(),
+this.attachFormEvents(b),b},getInput:function(){return this.getForm().querySelector("input.medium-editor-toolbar-input")},handleTextboxKeyup:function(a){return a.keyCode===b.keyCode.ENTER?(a.preventDefault(),void this.doFormSave()):void(a.keyCode===b.keyCode.ESCAPE&&(a.preventDefault(),this.doFormCancel()))},handleFormClick:function(a){a.stopPropagation()},handleSaveClick:function(a){a.preventDefault(),this.doFormSave()},handleCloseClick:function(a){a.preventDefault(),this.doFormCancel()}},j=b.derives(h,a)}();var k;!function(){k=function(){this.parent=!0,this.name="anchor-preview"},k.prototype={previewValueSelector:"i",init:function(a){this.base=a,this.anchorPreview=this.createPreview(),this.base.options.elementsContainer.appendChild(this.anchorPreview),this.attachToEditables()},getPreviewElement:function(){return this.anchorPreview},createPreview:function(){var a=this.base.options.ownerDocument.createElement("div");return a.id="medium-editor-anchor-preview-"+this.base.id,a.className="medium-editor-anchor-preview",a.innerHTML=this.getTemplate(),this.base.on(a,"click",this.handleClick.bind(this)),a},getTemplate:function(){return'<div class="medium-editor-toolbar-anchor-preview" id="medium-editor-toolbar-anchor-preview">    <i class="medium-editor-toolbar-anchor-preview-inner"></i></div>'},deactivate:function(){this.anchorPreview&&(this.anchorPreview.parentNode&&this.anchorPreview.parentNode.removeChild(this.anchorPreview),delete this.anchorPreview)},hidePreview:function(){this.anchorPreview.classList.remove("medium-editor-anchor-preview-active"),this.activeAnchor=null},showPreview:function(a){return this.anchorPreview.classList.contains("medium-editor-anchor-preview-active")||a.getAttribute("data-disable-preview")?!0:(this.previewValueSelector&&(this.anchorPreview.querySelector(this.previewValueSelector).textContent=a.attributes.href.value),this.anchorPreview.classList.add("medium-toolbar-arrow-over"),this.anchorPreview.classList.remove("medium-toolbar-arrow-under"),this.anchorPreview.classList.contains("medium-editor-anchor-preview-active")||this.anchorPreview.classList.add("medium-editor-anchor-preview-active"),this.activeAnchor=a,this.positionPreview(),this.attachPreviewHandlers(),this)},positionPreview:function(){var a,b,c=40,d=this.activeAnchor.getBoundingClientRect(),e=(d.left+d.right)/2;a=this.anchorPreview.offsetWidth/2,b=this.base.options.diffLeft-a,this.anchorPreview.style.top=Math.round(c+d.bottom-this.base.options.diffTop+this.base.options.contentWindow.pageYOffset-this.anchorPreview.offsetHeight)+"px",this.anchorPreview.style.left=a>e?b+a+"px":this.base.options.contentWindow.innerWidth-e<a?this.base.options.contentWindow.innerWidth+b-a+"px":b+e+"px"},attachToEditables:function(){this.base.subscribe("editableMouseover",this.handleEditableMouseover.bind(this))},handleClick:function(){var a=this.base.getExtensionByName("anchor"),b=this.activeAnchor;a&&b&&(this.base.selectElement(this.activeAnchor),this.base.delay(function(){b&&(a.showForm(b.attributes.href.value),b=null)}.bind(this))),this.hidePreview()},handleAnchorMouseout:function(){this.anchorToPreview=null,this.base.off(this.activeAnchor,"mouseout",this.instance_handleAnchorMouseout),this.instance_handleAnchorMouseout=null},handleEditableMouseover:function(a){if(a.target&&"a"===a.target.tagName.toLowerCase()){if(!/href=["']\S+["']/.test(a.target.outerHTML)||/href=["']#\S+["']/.test(a.target.outerHTML))return!0;if(this.base.toolbar&&this.base.toolbar.isDisplayed())return!0;this.activeAnchor&&this.activeAnchor!==a.target&&this.detachPreviewHandlers(),this.anchorToPreview=a.target,this.instance_handleAnchorMouseout=this.handleAnchorMouseout.bind(this),this.base.on(this.anchorToPreview,"mouseout",this.instance_handleAnchorMouseout),this.base.delay(function(){this.anchorToPreview&&this.showPreview(this.anchorToPreview)}.bind(this))}},handlePreviewMouseover:function(){this.lastOver=(new Date).getTime(),this.hovering=!0},handlePreviewMouseout:function(a){a.relatedTarget&&/anchor-preview/.test(a.relatedTarget.className)||(this.hovering=!1)},updatePreview:function(){if(this.hovering)return!0;var a=(new Date).getTime()-this.lastOver;a>this.base.options.anchorPreviewHideDelay&&this.detachPreviewHandlers()},detachPreviewHandlers:function(){clearInterval(this.interval_timer),this.instance_handlePreviewMouseover&&(this.base.off(this.anchorPreview,"mouseover",this.instance_handlePreviewMouseover),this.base.off(this.anchorPreview,"mouseout",this.instance_handlePreviewMouseout),this.activeAnchor&&(this.base.off(this.activeAnchor,"mouseover",this.instance_handlePreviewMouseover),this.base.off(this.activeAnchor,"mouseout",this.instance_handlePreviewMouseout))),this.hidePreview(),this.hovering=this.instance_handlePreviewMouseover=this.instance_handlePreviewMouseout=null},attachPreviewHandlers:function(){this.lastOver=(new Date).getTime(),this.hovering=!0,this.instance_handlePreviewMouseover=this.handlePreviewMouseover.bind(this),this.instance_handlePreviewMouseout=this.handlePreviewMouseout.bind(this),this.interval_timer=setInterval(this.updatePreview.bind(this),200),this.base.on(this.anchorPreview,"mouseover",this.instance_handlePreviewMouseover),this.base.on(this.anchorPreview,"mouseout",this.instance_handlePreviewMouseout),this.base.on(this.activeAnchor,"mouseover",this.instance_handlePreviewMouseover),this.base.on(this.activeAnchor,"mouseout",this.instance_handlePreviewMouseout)}}}();var l;!function(){l=function(a){this.base=a,this.options=a.options,this.initThrottledMethods()},l.prototype={createToolbar:function(){var a=this.base.options.ownerDocument.createElement("div");return a.id="medium-editor-toolbar-"+this.base.id,a.className="medium-editor-toolbar",a.className+=this.options.staticToolbar?" static-toolbar":" stalker-toolbar",a.appendChild(this.createToolbarButtons()),this.base.commands.forEach(function(b){b.hasForm&&a.appendChild(b.getForm())}),this.attachEventHandlers(),a},createToolbarButtons:function(){var a,c,d,e=this.base.options.ownerDocument.createElement("ul");return e.id="medium-editor-toolbar-actions"+this.base.id,e.className="medium-editor-toolbar-actions clearfix",e.style.display="block",this.base.commands.forEach(function(d){"function"==typeof d.getButton&&(c=d.getButton(this.base),a=this.base.options.ownerDocument.createElement("li"),b.isElement(c)?a.appendChild(c):a.innerHTML=c,e.appendChild(a))}.bind(this)),d=e.querySelectorAll("button"),d.length>0&&(d[0].classList.add(this.options.firstButtonClass),d[d.length-1].classList.add(this.options.lastButtonClass)),e},deactivate:function(){this.toolbar&&(this.toolbar.parentNode&&this.toolbar.parentNode.removeChild(this.toolbar),delete this.toolbar)},getToolbarElement:function(){return this.toolbar||(this.toolbar=this.createToolbar()),this.toolbar},getToolbarActionsElement:function(){return this.getToolbarElement().querySelector(".medium-editor-toolbar-actions")},initThrottledMethods:function(){this.throttledPositionToolbar=b.throttle(function(){this.base.isActive&&this.positionToolbarIfShown()}.bind(this))},attachEventHandlers:function(){this.base.subscribe("blur",this.handleBlur.bind(this)),this.base.subscribe("focus",this.handleFocus.bind(this)),this.base.subscribe("editableClick",this.handleEditableClick.bind(this)),this.base.subscribe("editableKeyup",this.handleEditableKeyup.bind(this)),this.base.on(this.options.ownerDocument.documentElement,"mouseup",this.handleDocumentMouseup.bind(this)),this.options.staticToolbar&&this.options.stickyToolbar&&this.base.on(this.options.contentWindow,"scroll",this.handleWindowScroll.bind(this),!0),this.base.on(this.options.contentWindow,"resize",this.handleWindowResize.bind(this))},handleWindowScroll:function(){this.positionToolbarIfShown()},handleWindowResize:function(){this.throttledPositionToolbar()},handleDocumentMouseup:function(a){return a&&a.target&&b.isDescendant(this.getToolbarElement(),a.target)?!1:void this.checkState()},handleEditableClick:function(){setTimeout(function(){this.checkState()}.bind(this),0)},handleEditableKeyup:function(){this.checkState()},handleBlur:function(){clearTimeout(this.hideTimeout),this.hideTimeout=setTimeout(function(){this.hideToolbar()}.bind(this),0)},handleFocus:function(){this.checkState()},isDisplayed:function(){return this.getToolbarElement().classList.contains("medium-editor-toolbar-active")},showToolbar:function(){clearTimeout(this.hideTimeout),this.isDisplayed()||(this.getToolbarElement().classList.add("medium-editor-toolbar-active"),"function"==typeof this.options.onShowToolbar&&this.options.onShowToolbar())},hideToolbar:function(){this.isDisplayed()&&(this.base.commands.forEach(function(a){"function"==typeof a.onHide&&a.onHide()}),this.getToolbarElement().classList.remove("medium-editor-toolbar-active"),"function"==typeof this.options.onHideToolbar&&this.options.onHideToolbar())},isToolbarDefaultActionsDisplayed:function(){return"block"===this.getToolbarActionsElement().style.display},hideToolbarDefaultActions:function(){this.isToolbarDefaultActionsDisplayed()&&(this.getToolbarActionsElement().style.display="none")},showToolbarDefaultActions:function(){this.hideExtensionForms(),this.isToolbarDefaultActionsDisplayed()||(this.getToolbarActionsElement().style.display="block"),this.base.delay(function(){this.showToolbar()}.bind(this))},hideExtensionForms:function(){this.base.commands.forEach(function(a){a.hasForm&&a.isDisplayed()&&a.hideForm()})},multipleBlockElementsSelected:function(){var a=f.getSelectionHtml.call(this).replace(/<[\S]+><\/[\S]+>/gim,""),b=a.match(/<(p|h[1-6]|blockquote)[^>]*>/g);return!!b&&b.length>1},modifySelection:function(){var a=this.options.contentWindow.getSelection(),c=a.getRangeAt(0);if(this.options.standardizeSelectionStart&&c.startContainer.nodeValue&&c.startOffset===c.startContainer.nodeValue.length){var d=b.findAdjacentTextNodeWithContent(f.getSelectionElement(this.options.contentWindow),c.startContainer,this.options.ownerDocument);if(d){for(var e=0;0===d.nodeValue.substr(e,1).trim().length;)e+=1;var g=this.options.ownerDocument.createRange();g.setStart(d,e),g.setEnd(c.endContainer,c.endOffset),a.removeAllRanges(),a.addRange(g),c=g}}},checkState:function(){if(!this.base.preventSelectionUpdates){if(!this.getFocusedElement()||f.selectionInContentEditableFalse(this.options.contentWindow))return void this.hideToolbar();var a=f.getSelectionElement(this.options.contentWindow);if(!a||-1===this.base.elements.indexOf(a)||a.getAttribute("data-disable-toolbar"))return void this.hideToolbar();if(this.options.updateOnEmptySelection&&this.options.staticToolbar)return void this.showAndUpdateToolbar();""===this.options.contentWindow.getSelection().toString().trim()||this.options.allowMultiParagraphSelection===!1&&this.multipleBlockElementsSelected()?this.hideToolbar():this.showAndUpdateToolbar()}},getFocusedElement:function(){for(var a=0;a<this.base.elements.length;a+=1)if(this.base.elements[a].getAttribute("data-medium-focused"))return this.base.elements[a];return null},showAndUpdateToolbar:function(){this.modifySelection(),this.setToolbarButtonStates(),this.showToolbarDefaultActions(),this.setToolbarPosition()},setToolbarButtonStates:function(){this.base.commands.forEach(function(a){"function"==typeof a.isActive&&a.setInactive()}.bind(this)),this.checkActiveButtons()},checkActiveButtons:function(){var a,c=[],d=null,e=b.getSelectionRange(this.options.ownerDocument),g=function(b){"function"==typeof b.checkState?b.checkState(a):"function"==typeof b.isActive&&"function"==typeof b.isAlreadyApplied&&!b.isActive()&&b.isAlreadyApplied(a)&&b.setActive()};if(e)for(a=f.getSelectedParentElement(e),this.base.commands.forEach(function(a){return"function"==typeof a.queryCommandState&&(d=a.queryCommandState(),null!==d)?void(d&&a.setActive()):void c.push(a)});void 0!==a.tagName&&-1===b.parentElements.indexOf(a.tagName.toLowerCase)&&(c.forEach(g),-1===this.base.elements.indexOf(a));)a=a.parentNode},positionToolbarIfShown:function(){this.isDisplayed()&&this.setToolbarPosition()},setToolbarPosition:function(){var a,b=this.getFocusedElement(),c=this.options.contentWindow.getSelection();return b?(this.options.staticToolbar?(this.showToolbar(),this.positionStaticToolbar(b)):c.isCollapsed||(this.showToolbar(),this.positionToolbar(c)),a=this.base.getExtensionByName("anchor-preview"),void(a&&"function"==typeof a.hidePreview&&a.hidePreview())):this},positionStaticToolbar:function(a){this.getToolbarElement().style.left="0";var b,c=this.options.ownerDocument.documentElement&&this.options.ownerDocument.documentElement.scrollTop||this.options.ownerDocument.body.scrollTop,d=this.options.contentWindow.innerWidth,e=this.getToolbarElement(),f=a.getBoundingClientRect(),g=f.top+c,h=f.left+f.width/2,i=e.offsetHeight,j=e.offsetWidth,k=j/2;this.options.stickyToolbar?c>g+a.offsetHeight-i?(e.style.top=g+a.offsetHeight-i+"px",e.classList.remove("sticky-toolbar")):c>g-i?(e.classList.add("sticky-toolbar"),e.style.top="0px"):(e.classList.remove("sticky-toolbar"),e.style.top=g-i+"px"):e.style.top=g-i+"px","left"===this.options.toolbarAlign?b=f.left:"center"===this.options.toolbarAlign?b=h-k:"right"===this.options.toolbarAlign&&(b=f.right-j),0>b?b=0:b+j>d&&(b=d-Math.ceil(j)-1),e.style.left=b+"px"},positionToolbar:function(a){this.getToolbarElement().style.left="0";var b=this.options.contentWindow.innerWidth,c=a.getRangeAt(0),d=c.getBoundingClientRect(),e=(d.left+d.right)/2,f=this.getToolbarElement(),g=f.offsetHeight,h=f.offsetWidth,i=h/2,j=50,k=this.options.diffLeft-i;d.top<j?(f.classList.add("medium-toolbar-arrow-over"),f.classList.remove("medium-toolbar-arrow-under"),f.style.top=j+d.bottom-this.options.diffTop+this.options.contentWindow.pageYOffset-g+"px"):(f.classList.add("medium-toolbar-arrow-under"),f.classList.remove("medium-toolbar-arrow-over"),f.style.top=d.top+this.options.diffTop+this.options.contentWindow.pageYOffset-g+"px"),f.style.left=i>e?k+i+"px":i>b-e?b+k-i+"px":k+e+"px"}}}();var m;!function(){m=function(a){this.base=a,this.initPlaceholders(),this.attachEventHandlers()},m.prototype={initPlaceholders:function(){this.base.elements.forEach(function(a){this.updatePlaceholder(a)},this)},showPlaceholder:function(a){a&&a.classList.add("medium-editor-placeholder")},hidePlaceholder:function(a){a&&a.classList.remove("medium-editor-placeholder")},updatePlaceholder:function(a){a.querySelector("img")||a.querySelector("blockquote")||""!==a.textContent.replace(/^\s+|\s+$/g,"")?this.hidePlaceholder(a):this.showPlaceholder(a)},attachEventHandlers:function(){this.base.subscribe("blur",this.handleExternalInteraction.bind(this)),this.base.subscribe("editableBlur",this.handleBlur.bind(this)),this.base.subscribe("editableClick",this.handleHidePlaceholderEvent.bind(this)),this.base.subscribe("editableKeypress",this.handleHidePlaceholderEvent.bind(this)),this.base.subscribe("editablePaste",this.handleHidePlaceholderEvent.bind(this))},handleHidePlaceholderEvent:function(a,b){this.hidePlaceholder(b)},handleBlur:function(a,b){this.updatePlaceholder(b)},handleExternalInteraction:function(){this.initPlaceholders()}}}();var n;return function(){n={}}(),function(){function o(a,c){if(this.options.disableReturn||c.getAttribute("data-disable-return"))a.preventDefault();else if(this.options.disableDoubleReturn||this.getAttribute("data-disable-double-return")){var d=b.getSelectionStart(this.options.ownerDocument);d&&""===d.textContent.trim()&&a.preventDefault()}}function p(a){var c=b.getSelectionStart(this.options.ownerDocument),d=c&&c.tagName.toLowerCase();"pre"===d&&(a.preventDefault(),b.insertHTMLCommand(this.options.ownerDocument,"    ")),b.isListItem(c)&&(a.preventDefault(),a.shiftKey?this.options.ownerDocument.execCommand("outdent",!1,null):this.options.ownerDocument.execCommand("indent",!1,null))}function q(a){var c,d,e,g=b.getSelectionStart(this.options.ownerDocument),h=g.tagName.toLowerCase(),i=/^(\s+|<br\/?>)?$/i,j=/h\d/i;(a.which===b.keyCode.BACKSPACE||a.which===b.keyCode.ENTER)&&g.previousElementSibling&&j.test(h)&&0===f.getCaretOffsets(g).left?a.which===b.keyCode.BACKSPACE&&i.test(g.previousElementSibling.innerHTML)?(g.previousElementSibling.parentNode.removeChild(g.previousElementSibling),a.preventDefault()):a.which===b.keyCode.ENTER&&(e=this.options.ownerDocument.createElement("p"),e.innerHTML="<br>",g.previousElementSibling.parentNode.insertBefore(e,g),a.preventDefault()):a.which===b.keyCode.DELETE&&g.nextElementSibling&&g.previousElementSibling&&!j.test(h)&&i.test(g.innerHTML)&&j.test(g.nextElementSibling.tagName)?(c=this.options.ownerDocument.createRange(),d=this.options.ownerDocument.getSelection(),c.setStart(g.nextElementSibling,0),c.collapse(!0),d.removeAllRanges(),d.addRange(c),g.previousElementSibling.parentNode.removeChild(g),a.preventDefault()):a.which!==b.keyCode.BACKSPACE||"li"!==h||!i.test(g.innerHTML)||g.previousElementSibling||g.parentElement.previousElementSibling||"li"!==g.nextElementSibling.tagName.toLowerCase()||(e=this.options.ownerDocument.createElement("p"),e.innerHTML="<br>",g.parentElement.parentElement.insertBefore(e,g.parentElement),c=this.options.ownerDocument.createRange(),d=this.options.ownerDocument.getSelection(),c.setStart(e,0),c.collapse(!0),d.removeAllRanges(),d.addRange(c),g.parentElement.removeChild(g),a.preventDefault())}function r(a){var b="medium-editor-dragover";a.preventDefault(),a.dataTransfer.dropEffect="copy","dragover"===a.type?a.target.classList.add(b):"dragleave"===a.type&&a.target.classList.remove(b)}function s(a){var c,d="medium-editor-dragover";a.preventDefault(),a.stopPropagation(),a.dataTransfer.files&&(c=Array.prototype.slice.call(a.dataTransfer.files,0),c.some(function(a){if(a.type.match("image")){var c,d;c=new FileReader,c.readAsDataURL(a),d="medium-img-"+ +new Date,b.insertHTMLCommand(this.options.ownerDocument,'<img class="medium-image-loading" id="'+d+'" />'),c.onload=function(){var a=this.options.ownerDocument.getElementById(d);a&&(a.removeAttribute("id"),a.removeAttribute("class"),a.src=c.result)}.bind(this)}}.bind(this))),a.target.classList.remove(d)}function t(a){var c,d=b.getSelectionStart(this.options.ownerDocument);d&&(d.getAttribute("data-medium-element")&&0===d.children.length&&this.options.ownerDocument.execCommand("formatBlock",!1,"p"),a.which!==b.keyCode.ENTER||b.isListItem(d)||(c=d.tagName.toLowerCase(),"a"===c?this.options.ownerDocument.execCommand("unlink",!1,null):a.shiftKey||/h\d/.test(c)||this.options.ownerDocument.execCommand("formatBlock",!1,"p")))}function u(a){a||(a=[]),"string"==typeof a&&(a=this.options.ownerDocument.querySelectorAll(a)),b.isElement(a)&&(a=[a]),this.elements=Array.prototype.slice.apply(a)}function v(a,b,c){return a.parent&&(a.base=c),"function"==typeof a.init&&a.init(c),a.name||(a.name=b),a}function w(){var a,b=!1;if(this.options.disableAnchorPreview)return!1;if(this.options.extensions["anchor-preview"])return!1;if(this.options.disableToolbar)return!1;for(a=0;a<this.elements.length;a+=1)if(!this.elements[a].getAttribute("data-disable-toolbar")){b=!0;break}return b}function x(a){var b=this.options.ownerDocument.createElement("div"),c=+new Date,d=this.elements[a];return b.className=d.className,b.id=c,b.innerHTML=d.value,d.classList.add("medium-editor-hidden"),d.parentNode.insertBefore(b,d),this.on(b,"input",function(){d.value=this.serialize()[c].value}.bind(this)),b}function y(){var a,b=!1;for(a=0;a<this.elements.length;a+=1)this.options.disableEditing||this.elements[a].getAttribute("data-disable-editing")||("textarea"===this.elements[a].tagName.toLowerCase()&&(this.elements[a]=x.call(this,a)),this.elements[a].setAttribute("contentEditable",!0)),this.elements[a].getAttribute("data-placeholder")||this.elements[a].setAttribute("data-placeholder",this.options.placeholder),this.elements[a].setAttribute("data-medium-element",!0),this.elements[a].setAttribute("role","textbox"),this.elements[a].setAttribute("aria-multiline",!0),this.options.disableToolbar||this.elements[a].getAttribute("data-disable-toolbar")||(b=!0);!this.toolbar&&b&&(this.toolbar=new l(this),this.options.elementsContainer.appendChild(this.toolbar.getToolbarElement()))}function z(){var a;if(this.subscribe("editableKeydownTab",p.bind(this)),this.subscribe("editableKeydownDelete",q.bind(this)),this.subscribe("editableKeydownEnter",q.bind(this)),this.options.disableReturn||this.options.disableDoubleReturn)this.subscribe("editableKeydownEnter",o.bind(this));else for(a=0;a<this.elements.length;a+=1)if(this.elements[a].getAttribute("data-disable-return")||this.elements[a].getAttribute("data-disable-double-return")){this.subscribe("editableKeydownEnter",o.bind(this));break}this.options.disableReturn||this.elements.forEach(function(a){a.getAttribute("data-disable-return")||this.on(a,"keyup",t.bind(this))},this),this.options.imageDragging&&(this.subscribe("editableDrag",r.bind(this)),this.subscribe("editableDrop",s.bind(this)))}function A(){var a=b.extend({},this.options.paste,{forcePlainText:this.options.forcePlainText,cleanPastedHtml:this.options.cleanPastedHtml,disableReturn:this.options.disableReturn,targetBlank:this.options.targetBlank,contentWindow:this.options.contentWindow,ownerDocument:this.options.ownerDocument});this.pasteHandler=new i(this,a)}function B(){var a,b,d=this.options.buttons,e=this.options.extensions;this.commands=[],d.forEach(function(b){e[b]?(a=v(e[b],b,this),this.commands.push(a)):"anchor"===b?(a=v(new j,b,this),this.commands.push(a)):c.hasOwnProperty(b)&&(a=new h(c[b],this),this.commands.push(a))},this);for(b in e)e.hasOwnProperty(b)&&-1===d.indexOf(b)&&(a=v(e[b],b,this));w.call(this)&&this.commands.push(v(new k,"anchor-preview",this))}function C(a,c){c&&[["forcePlainText","paste.forcePlainText"],["cleanPastedHtml","paste.cleanPastedHtml"]].forEach(function(a){c.hasOwnProperty(a[0])&&void 0!==c[a[0]]&&b.deprecated(a[0],a[1])});var d=["paste"],e=b.extend({},c);return d.forEach(function(c){e[c]=e[c]?b.defaults({},e[c],a[c]):a[c]}),b.defaults(e,a)}function D(a,c){var d,e=/^append-(.+)$/gi;return d=e.exec(a),d?b.execFormatBlock(this.options.ownerDocument,d[1]):"createLink"===a?this.createLink(c):"image"===a?this.options.ownerDocument.execCommand("insertImage",!1,this.options.contentWindow.getSelection()):this.options.ownerDocument.execCommand(a,!1,null)}a.statics={ButtonsData:c,DefaultButton:h,AnchorExtension:j,Toolbar:l,AnchorPreview:k},a.Extension=e,a.extensions=n,a.util=b,a.selection=f,a.prototype={defaults:d,init:function(a,b){var c=1;if(this.options=C.call(this,this.defaults,b),u.call(this,a),0!==this.elements.length){for(this.options.elementsContainer||(this.options.elementsContainer=this.options.ownerDocument.body);this.options.elementsContainer.querySelector("#medium-editor-toolbar-"+c);)c+=1;return this.id=c,this.setup()}},setup:function(){this.isActive||(this.events=new g(this),this.isActive=!0,B.call(this),y.call(this),z.call(this),A.call(this),this.options.disablePlaceholders||(this.placeholders=new m(this)))},destroy:function(){if(this.isActive){var a;for(this.isActive=!1,void 0!==this.toolbar&&(this.toolbar.deactivate(),delete this.toolbar),a=0;a<this.elements.length;a+=1)this.elements[a].removeAttribute("contentEditable"),this.elements[a].removeAttribute("data-medium-element");this.commands.forEach(function(a){"function"==typeof a.deactivate&&a.deactivate()},this),this.events.detachAllDOMEvents(),this.events.detachAllCustomEvents()}},on:function(a,b,c,d){this.events.attachDOMEvent(a,b,c,d)},off:function(a,b,c,d){this.events.detachDOMEvent(a,b,c,d)},subscribe:function(a,b){this.events.attachCustomEvent(a,b)},unsubscribe:function(a,b){this.events.detachCustomEvent(a,b)},delay:function(a){var b=this;return setTimeout(function(){b.isActive&&a()},this.options.delay)},serialize:function(){var a,b,c={};for(a=0;a<this.elements.length;a+=1)b=""!==this.elements[a].id?this.elements[a].id:"element-"+a,c[b]={value:this.elements[a].innerHTML.trim()};return c},getExtensionByName:function(a){var b;return this.commands&&this.commands.length&&this.commands.some(function(c){return c.name===a?(b=c,!0):!1}),b},callExtensions:function(a){if(!(arguments.length<1)){var b,c,d=Array.prototype.slice.call(arguments,1);for(c in this.options.extensions)this.options.extensions.hasOwnProperty(c)&&(b=this.options.extensions[c],void 0!==b[a]&&b[a].apply(b,d));return this}},stopSelectionUpdates:function(){this.preventSelectionUpdates=!0},startSelectionUpdates:function(){this.preventSelectionUpdates=!1},checkSelection:function(){return this.toolbar&&this.toolbar.checkState(),this},queryCommandState:function(a){var b,c=/^full-(.+)$/gi,d=null;b=c.exec(a),b&&(a=b[1]);try{d=this.options.ownerDocument.queryCommandState(a)}catch(e){d=null}return d},execAction:function(a,c){var d,e,f=/^full-(.+)$/gi;return d=f.exec(a),d?(this.saveSelection(),this.selectAllContents(),e=D.call(this,d[1],c),this.restoreSelection()):e=D.call(this,a,c),("insertunorderedlist"===a||"insertorderedlist"===a)&&b.cleanListDOM(this.getSelectedParentElement()),this.checkSelection(),e},getSelectedParentElement:function(a){return void 0===a&&(a=this.options.contentWindow.getSelection().getRangeAt(0)),f.getSelectedParentElement(a)},hideToolbarDefaultActions:function(){return this.toolbar&&this.toolbar.hideToolbarDefaultActions(),this},setToolbarPosition:function(){this.toolbar&&this.toolbar.setToolbarPosition()},selectAllContents:function(){var a=f.getSelectionElement(this.options.contentWindow);if(a){for(;1===a.children.length;)a=a.children[0];this.selectElement(a)}},selectElement:function(a){f.selectNode(a,this.options.ownerDocument);var b=f.getSelectionElement(this.options.contentWindow);b&&this.events.focusElement(b)},saveSelection:function(){this.selectionState=null;var a,c,d,e=this.options.contentWindow.getSelection(),f=-1;e.rangeCount>0&&(a=e.getRangeAt(0),c=a.cloneRange(),this.elements.some(function(c,d){return c===a.startContainer||b.isDescendant(c,a.startContainer)?(f=d,!0):!1}),f>-1&&(c.selectNodeContents(this.elements[f]),c.setEnd(a.startContainer,a.startOffset),d=c.toString().length,this.selectionState={start:d,end:d+a.toString().length,editableElementIndex:f}))},restoreSelection:function(){if(this.selectionState){var a,b,c,d,e=this.elements[this.selectionState.editableElementIndex],f=0,g=this.options.ownerDocument.createRange(),h=[e],i=!1,j=!1;for(g.setStart(e,0),g.collapse(!0),a=h.pop();!j&&a;){if(3===a.nodeType)d=f+a.length,!i&&this.selectionState.start>=f&&this.selectionState.start<=d&&(g.setStart(a,this.selectionState.start-f),i=!0),i&&this.selectionState.end>=f&&this.selectionState.end<=d&&(g.setEnd(a,this.selectionState.end-f),j=!0),f=d;else for(b=a.childNodes.length-1;b>=0;)h.push(a.childNodes[b]),b-=1;j||(a=h.pop())}c=this.options.contentWindow.getSelection(),c.removeAllRanges(),c.addRange(g)}},createLink:function(a){var c,d;if(a.url&&a.url.trim().length>0&&(this.options.ownerDocument.execCommand("createLink",!1,a.url),(this.options.targetBlank||"_blank"===a.target)&&b.setTargetBlank(b.getSelectionStart(this.options.ownerDocument)),a.buttonClass&&b.addClassToAnchors(b.getSelectionStart(this.options.ownerDocument),a.buttonClass)),this.options.targetBlank||"_blank"===a.target||a.buttonClass)for(c=this.options.ownerDocument.createEvent("HTMLEvents"),c.initEvent("input",!0,!0,this.options.contentWindow),d=0;d<this.elements.length;d+=1)this.elements[d].dispatchEvent(c)},activate:function(){b.deprecatedMethod.call(this,"activate","setup",arguments)},deactivate:function(){b.deprecatedMethod.call(this,"deactivate","destroy",arguments)},cleanPaste:function(a){this.pasteHandler.cleanPaste(a)},pasteHTML:function(a,b){this.pasteHandler.pasteHTML(a,b)}}}(),a.version=function(a,b,c){return{major:parseInt(a,10),minor:parseInt(b,10),revision:parseInt(c,10),toString:function(){return[a,b,c].join(".")}}}.apply(this,{version:"4.4.0"}.version.split(".")),a}());
\ No newline at end of file
diff --git a/spec/events.spec.js b/spec/events.spec.js
index c095795fd..3c772f1af 100644
--- a/spec/events.spec.js
+++ b/spec/events.spec.js
@@ -44,4 +44,71 @@ describe('Events TestCase', function () {
             expect(spy).not.toHaveBeenCalled();
         });
     });
+
+    describe('Custom Focus/Blur Listener', function () {
+        it('should be called and passed the editable element when the editable gets focus', function () {
+            var editor = new MediumEditor('.editor'),
+                focusedEditable,
+                blurredEditable,
+                focusListener = function (event, editable) { focusedEditable = editable; },
+                blurListener = function (event, editable) { blurredEditable = editable; };
+            editor.subscribe('focus', focusListener);
+            editor.subscribe('blur', blurListener);
+
+            editor.selectElement(this.el.firstChild);
+            expect(focusedEditable).toBe(this.el);
+            expect(blurredEditable).toBeUndefined();
+
+            fireEvent(document.body, 'click');
+            expect(blurredEditable).toBe(this.el);
+        });
+
+        it('should not trigger after detaching', function () {
+            var focusSpy = jasmine.createSpy('handler'),
+                blurSpy = jasmine.createSpy('handler'),
+                editor = new MediumEditor('.editor');
+            editor.subscribe('focus', focusSpy);
+            editor.subscribe('blur', blurSpy);
+
+            editor.selectElement(this.el.firstChild);
+            expect(focusSpy.calls.count()).toBe(1);
+            expect(blurSpy).not.toHaveBeenCalled();
+
+            fireEvent(document.body, 'click');
+            expect(blurSpy).toHaveBeenCalled();
+
+            editor.unsubscribe('focus', focusSpy);
+            editor.selectElement(this.el.firstChild);
+            expect(focusSpy.calls.count()).toBe(1);
+
+            editor.unsubscribe('blur', blurSpy);
+            fireEvent(document.body, 'click');
+            expect(blurSpy.calls.count()).toBe(1);
+        });
+
+        it('should not be called after destroying editor', function () {
+            var editor = new MediumEditor('.editor'),
+                focusSpy = jasmine.createSpy('handler'),
+                blurSpy = jasmine.createSpy('handler');
+            editor.subscribe('focus', focusSpy);
+            editor.subscribe('blur', blurSpy);
+
+            this.el.focus();
+            fireEvent(this.el, 'focus');
+            expect(focusSpy.calls.count()).toBe(1);
+            expect(blurSpy).not.toHaveBeenCalled();
+
+            fireEvent(document.body, 'click');
+            expect(blurSpy).toHaveBeenCalled();
+
+            editor.destroy();
+
+            this.el.focus();
+            fireEvent(this.el, 'focus');
+            expect(focusSpy.calls.count()).toBe(1);
+
+            fireEvent(document.body, 'click');
+            expect(blurSpy.calls.count()).toBe(1);
+        });
+    });
 });
diff --git a/src/js/core.js b/src/js/core.js
index 19a8122bf..a22718919 100644
--- a/src/js/core.js
+++ b/src/js/core.js
@@ -541,6 +541,7 @@ function MediumEditor(elements, options) {
             }, this);
 
             this.events.detachAllDOMEvents();
+            this.events.detachAllCustomEvents();
         },
 
         on: function (target, event, listener, useCapture) {
@@ -555,6 +556,10 @@ function MediumEditor(elements, options) {
             this.events.attachCustomEvent(event, listener);
         },
 
+        unsubscribe: function (event, listener) {
+            this.events.detachCustomEvent(event, listener);
+        },
+
         delay: function (fn) {
             var self = this;
             return setTimeout(function () {
diff --git a/src/js/events.js b/src/js/events.js
index d1a405ce8..546baa391 100644
--- a/src/js/events.js
+++ b/src/js/events.js
@@ -51,21 +51,42 @@ var Events;
         },
 
         // custom events
-        attachCustomEvent: function (event, handler) {
+        attachCustomEvent: function (event, listener) {
             this.setupListener(event);
             // If we don't suppot this custom event, don't do anything
             if (this.listeners[event]) {
                 if (!this.customEvents[event]) {
                     this.customEvents[event] = [];
                 }
-                this.customEvents[event].push(handler);
+                this.customEvents[event].push(listener);
             }
         },
 
+        detachCustomEvent: function (event, listener) {
+            var index = this.indexOfCustomListener(event, listener);
+            if (index !== -1) {
+                this.customEvents[event].splice(index, 1);
+                // TODO: If array is empty, should detach internal listeners via destoryListener()
+            }
+        },
+
+        indexOfCustomListener: function (event, listener) {
+            if (!this.customEvents[event] || !this.customEvents[event].length) {
+                return -1;
+            }
+
+            return this.customEvents[event].indexOf(listener);
+        },
+
+        detachAllCustomEvents: function () {
+            this.customEvents = {};
+            // TODO: Should detach internal listeners here via destroyListener()
+        },
+
         triggerCustomEvent: function (name, data, editable) {
             if (this.customEvents[name]) {
-                this.customEvents[name].forEach(function (handler) {
-                    handler(data, editable);
+                this.customEvents[name].forEach(function (listener) {
+                    listener(data, editable);
                 });
             }
         },