web/web_widget_text_markdown/static/lib/bootstrap-markdown/bootstrap-markdown.js

/* ===================================================
 * bootstrap-markdown.js v2.7.0
 * http://github.com/toopay/bootstrap-markdown
 * ===================================================
 * Copyright 2013-2014 Taufan Aditya
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ========================================================== */

!function ($) {

  "use strict"; // jshint ;_;


  /* MARKDOWN CLASS DEFINITION
   * ========================== */

  var Markdown = function (element, options) {
    // Class Properties
    this.$ns           = 'bootstrap-markdown'
    this.$element      = $(element)
    this.$editable     = {el:null, type:null,attrKeys:[], attrValues:[], content:null}
    this.$options      = $.extend(true, {}, $.fn.markdown.defaults, options, this.$element.data(), this.$element.data('options'))
    this.$oldContent   = null
    this.$isPreview    = false
    this.$isFullscreen = false
    this.$editor       = null
    this.$textarea     = null
    this.$handler      = []
    this.$callback     = []
    this.$nextTab      = []

    this.showEditor()
  }

  Markdown.prototype = {

    constructor: Markdown

  , __alterButtons: function(name,alter) {
      var handler = this.$handler, isAll = (name == 'all'),that = this

      $.each(handler,function(k,v) {
        var halt = true
        if (isAll) {
          halt = false
        } else {
          halt = v.indexOf(name) < 0
        }

        if (halt == false) {
          alter(that.$editor.find('button[data-handler="'+v+'"]'))
        }
      })
    }

  , __buildButtons: function(buttonsArray, container) {
      var i,
          ns = this.$ns,
          handler = this.$handler,
          callback = this.$callback

      for (i=0;i<buttonsArray.length;i++) {
        // Build each group container
        var y, btnGroups = buttonsArray[i]
        for (y=0;y<btnGroups.length;y++) {
          // Build each button group
          var z,
              buttons = btnGroups[y].data,
              btnGroupContainer = $('<div/>', {
                                    'class': 'btn-group'
                                  })

          for (z=0;z<buttons.length;z++) {
            var button = buttons[z],
                buttonContainer, buttonIconContainer,
                buttonHandler = ns+'-'+button.name,
                buttonIcon = this.__getIcon(button.icon),
                btnText = button.btnText ? button.btnText : '',
                btnClass = button.btnClass ? button.btnClass : 'btn',
                tabIndex = button.tabIndex ? button.tabIndex : '-1',
                hotkey = typeof button.hotkey !== 'undefined' ? button.hotkey : '',
                hotkeyCaption = typeof jQuery.hotkeys !== 'undefined' && hotkey !== '' ? ' ('+hotkey+')' : ''

            // Construct the button object
            buttonContainer = $('<button></button>');
            buttonContainer.text(' ' + this.__localize(btnText)).addClass('btn-default btn-sm').addClass(btnClass);
            if(btnClass.match(/btn\-(primary|success|info|warning|danger|link)/)){
                buttonContainer.removeClass('btn-default');
            }
            buttonContainer.attr({
                'type': 'button',
                'title': this.__localize(button.title) + hotkeyCaption,
                'tabindex': tabIndex,
                'data-provider': ns,
                'data-handler': buttonHandler,
                'data-hotkey': hotkey
            });
            if (button.toggle == true){
              buttonContainer.attr('data-toggle', 'button');
            }
            buttonIconContainer = $('<span/>');
            buttonIconContainer.addClass(buttonIcon);
            buttonIconContainer.prependTo(buttonContainer);

            // Attach the button object
            btnGroupContainer.append(buttonContainer);

            // Register handler and callback
            handler.push(buttonHandler);
            callback.push(button.callback);
          }

          // Attach the button group into container dom
          container.append(btnGroupContainer);
        }
      }

      return container;
    }
  , __setListener: function() {
      // Set size and resizable Properties
      var hasRows = typeof this.$textarea.attr('rows') != 'undefined',
          maxRows = this.$textarea.val().split("\n").length > 5 ? this.$textarea.val().split("\n").length : '5',
          rowsVal = hasRows ? this.$textarea.attr('rows') : maxRows

      this.$textarea.attr('rows',rowsVal)
      if (this.$options.resize) {
        this.$textarea.css('resize',this.$options.resize)
      }

      this.$textarea
        .on('focus',    $.proxy(this.focus, this))
        .on('keypress', $.proxy(this.keypress, this))
        .on('keyup',    $.proxy(this.keyup, this))
        .on('change',   $.proxy(this.change, this))

      if (this.eventSupported('keydown')) {
        this.$textarea.on('keydown', $.proxy(this.keydown, this))
      }

      // Re-attach markdown data
      this.$textarea.data('markdown',this)
    }

  , __handle: function(e) {
      var target = $(e.currentTarget),
          handler = this.$handler,
          callback = this.$callback,
          handlerName = target.attr('data-handler'),
          callbackIndex = handler.indexOf(handlerName),
          callbackHandler = callback[callbackIndex]

      // Trigger the focusin
      $(e.currentTarget).focus()

      callbackHandler(this)

      // Trigger onChange for each button handle
      this.change(this);

      // Unless it was the save handler,
      // focusin the textarea
      if (handlerName.indexOf('cmdSave') < 0) {
        this.$textarea.focus()
      }

      e.preventDefault()
    }

  , __localize: function(string) {
      var messages = $.fn.markdown.messages,
          language = this.$options.language
      if (
        typeof messages !== 'undefined' &&
        typeof messages[language] !== 'undefined' &&
        typeof messages[language][string] !== 'undefined'
      ) {
        return messages[language][string];
      }
      return string;
    }

  , __getIcon: function(src) {
    return typeof src == 'object' ? src[this.$options.iconlibrary] : src;
  }

  , setFullscreen: function(mode) {
    var $editor = this.$editor,
        $textarea = this.$textarea

    if (mode === true) {
      $editor.addClass('md-fullscreen-mode')
      $('body').addClass('md-nooverflow')
      this.$options.onFullscreen(this)
    } else {
      $editor.removeClass('md-fullscreen-mode')
      $('body').removeClass('md-nooverflow')
    }

    this.$isFullscreen = mode;
    $textarea.focus()
  }

  , showEditor: function() {
      var instance = this,
          textarea,
          ns = this.$ns,
          container = this.$element,
          originalHeigth = container.css('height'),
          originalWidth = container.css('width'),
          editable = this.$editable,
          handler = this.$handler,
          callback = this.$callback,
          options = this.$options,
          editor = $( '<div/>', {
                      'class': 'md-editor',
                      click: function() {
                        instance.focus()
                      }
                    })

      // Prepare the editor
      if (this.$editor == null) {
        // Create the panel
        var editorHeader = $('<div/>', {
                            'class': 'md-header btn-toolbar'
                            })

        // Merge the main & additional button groups together
        var allBtnGroups = []
        if (options.buttons.length > 0) allBtnGroups = allBtnGroups.concat(options.buttons[0])
        if (options.additionalButtons.length > 0) allBtnGroups = allBtnGroups.concat(options.additionalButtons[0])

        // Reduce and/or reorder the button groups
        if (options.reorderButtonGroups.length > 0) {
          allBtnGroups = allBtnGroups
              .filter(function(btnGroup) {
                return options.reorderButtonGroups.indexOf(btnGroup.name) > -1
              })
              .sort(function(a, b) {
                if (options.reorderButtonGroups.indexOf(a.name) < options.reorderButtonGroups.indexOf(b.name)) return -1
                if (options.reorderButtonGroups.indexOf(a.name) > options.reorderButtonGroups.indexOf(b.name)) return 1
                return 0
              })
        }

        // Build the buttons
        if (allBtnGroups.length > 0) {
          editorHeader = this.__buildButtons([allBtnGroups], editorHeader)
        }

        if (options.fullscreen.enable) {
          editorHeader.append('<div class="md-controls"><a class="md-control md-control-fullscreen" href="#"><span class="'+this.__getIcon(options.fullscreen.icons.fullscreenOn)+'"></span></a></div>').on('click', '.md-control-fullscreen', function(e) {
              e.preventDefault();
              instance.setFullscreen(true)
          })
        }

        editor.append(editorHeader)

        // Wrap the textarea
        if (container.is('textarea')) {
          container.before(editor)
          textarea = container
          textarea.addClass('md-input')
          editor.append(textarea)
        } else {
          var rawContent = (typeof toMarkdown == 'function') ? toMarkdown(container.html()) : container.html(),
              currentContent = $.trim(rawContent)

          // This is some arbitrary content that could be edited
          textarea = $('<textarea/>', {
                       'class': 'md-input',
                       'val' : currentContent
                      })

          editor.append(textarea)

          // Save the editable
          editable.el = container
          editable.type = container.prop('tagName').toLowerCase()
          editable.content = container.html()

          $(container[0].attributes).each(function(){
            editable.attrKeys.push(this.nodeName)
            editable.attrValues.push(this.nodeValue)
          })

          // Set editor to blocked the original container
          container.replaceWith(editor)
        }

        var editorFooter = $('<div/>', {
                           'class': 'md-footer'
                         }),
            createFooter = false,
            footer = ''
        // Create the footer if savable
        if (options.savable) {
          createFooter = true;
          var saveHandler = 'cmdSave'

          // Register handler and callback
          handler.push(saveHandler)
          callback.push(options.onSave)

          editorFooter.append('<button class="btn btn-success" data-provider="'
                              +ns
                              +'" data-handler="'
                              +saveHandler
                              +'"><i class="icon icon-white icon-ok"></i> '
                              +this.__localize('Save')
                              +'</button>')


        }

        footer = typeof options.footer === 'function' ? options.footer(this) : options.footer

        if ($.trim(footer) !== '') {
          createFooter = true;
          editorFooter.append(footer);
        }

        if (createFooter) editor.append(editorFooter)

        // Set width
        if (options.width && options.width !== 'inherit') {
          if (jQuery.isNumeric(options.width)) {
            editor.css('display', 'table')
            textarea.css('width', options.width + 'px')
          } else {
            editor.addClass(options.width)
          }
        }

        // Set height
        if (options.height && options.height !== 'inherit') {
          if (jQuery.isNumeric(options.height)) {
            var height = options.height
            if (editorHeader) height = Math.max(0, height - editorHeader.outerHeight())
            if (editorFooter) height = Math.max(0, height - editorFooter.outerHeight())
            textarea.css('height', height + 'px')
          } else {
            editor.addClass(options.height)
          }
        }

        // Reference
        this.$editor     = editor
        this.$textarea   = textarea
        this.$editable   = editable
        this.$oldContent = this.getContent()

        this.__setListener()

        // Set editor attributes, data short-hand API and listener
        this.$editor.attr('id',(new Date).getTime())
        this.$editor.on('click', '[data-provider="bootstrap-markdown"]', $.proxy(this.__handle, this))

        if (this.$element.is(':disabled') || this.$element.is('[readonly]')) {
          this.$editor.addClass('md-editor-disabled');
          this.disableButtons('all');
        }

        if (this.eventSupported('keydown') && typeof jQuery.hotkeys === 'object') {
          editorHeader.find('[data-provider="bootstrap-markdown"]').each(function() {
            var $button = $(this),
              hotkey = $button.attr('data-hotkey')
            if (hotkey.toLowerCase() !== '') {
              textarea.bind('keydown', hotkey, function() {
                $button.trigger('click')
                return false;
              })
            }
          })
        }

        if (options.initialstate === 'preview') {
          this.showPreview();
        } else if (options.initialstate === 'fullscreen' && options.fullscreen.enable) {
          this.setFullscreen(true)
        }

      } else {
        this.$editor.show()
      }

      if (options.autofocus) {
        this.$textarea.focus()
        this.$editor.addClass('active')
      }

      if (options.fullscreen.enable && options.fullscreen !== false) {
        this.$editor.append('\
          <div class="md-fullscreen-controls">\
            <a href="#" class="exit-fullscreen" title="Exit fullscreen"><span class="'+this.__getIcon(options.fullscreen.icons.fullscreenOff)+'"></span></a>\
          </div>')

        this.$editor.on('click', '.exit-fullscreen', function(e) {
          e.preventDefault()
          instance.setFullscreen(false)
        })
      }

      // hide hidden buttons from options
      this.hideButtons(options.hiddenButtons)

      // disable disabled buttons from options
      this.disableButtons(options.disabledButtons)

      // Trigger the onShow hook
      options.onShow(this)

      return this
    }

  , parseContent: function() {
      var content,
        callbackContent = this.$options.onPreview(this) // Try to get the content from callback

      if (typeof callbackContent == 'string') {
        // Set the content based by callback content
        content = callbackContent
      } else {
        // Set the content
        var val = this.$textarea.val();
        if(typeof markdown == 'object') {
          content = markdown.toHTML(val);
        }else if(typeof marked == 'function') {
          content = marked(val);
        } else {
          content = val;
        }
      }

      return content;
    }

  , showPreview: function() {
      var options = this.$options,
          container = this.$textarea,
          afterContainer = container.next(),
          replacementContainer = $('<div/>',{'class':'md-preview','data-provider':'markdown-preview'}),
          content

      // Give flag that tell the editor enter preview mode
      this.$isPreview = true
      // Disable all buttons
      this.disableButtons('all').enableButtons('cmdPreview')

      content = this.parseContent()

      // Build preview element
      replacementContainer.html(content)

      if (afterContainer && afterContainer.attr('class') == 'md-footer') {
        // If there is footer element, insert the preview container before it
        replacementContainer.insertBefore(afterContainer)
      } else {
        // Otherwise, just append it after textarea
        container.parent().append(replacementContainer)
      }

      // Set the preview element dimensions
      replacementContainer.css({
        width: container.outerWidth() + 'px',
        height: container.outerHeight() + 'px'
      })

      if (this.$options.resize) {
        replacementContainer.css('resize',this.$options.resize)
      }

      // Hide the last-active textarea
      container.hide()

      // Attach the editor instances
      replacementContainer.data('markdown',this)

      if (this.$element.is(':disabled') || this.$element.is('[readonly]')) {
        this.$editor.addClass('md-editor-disabled');
        this.disableButtons('all');
      }

      return this
    }

  , hidePreview: function() {
      // Give flag that tell the editor quit preview mode
      this.$isPreview = false

      // Obtain the preview container
      var container = this.$editor.find('div[data-provider="markdown-preview"]')

      // Remove the preview container
      container.remove()

      // Enable all buttons
      this.enableButtons('all')
      // Disable configured disabled buttons
      this.disableButtons(this.$options.disabledButtons)

      // Back to the editor
      this.$textarea.show()
      this.__setListener()

      return this
    }

  , isDirty: function() {
      return this.$oldContent != this.getContent()
    }

  , getContent: function() {
      return this.$textarea.val()
    }

  , setContent: function(content) {
      this.$textarea.val(content)

      return this
    }

  , findSelection: function(chunk) {
    var content = this.getContent(), startChunkPosition

    if (startChunkPosition = content.indexOf(chunk), startChunkPosition >= 0 && chunk.length > 0) {
      var oldSelection = this.getSelection(), selection

      this.setSelection(startChunkPosition,startChunkPosition+chunk.length)
      selection = this.getSelection()

      this.setSelection(oldSelection.start,oldSelection.end)

      return selection
    } else {
      return null
    }
  }

  , getSelection: function() {

      var e = this.$textarea[0]

      return (

          ('selectionStart' in e && function() {
              var l = e.selectionEnd - e.selectionStart
              return { start: e.selectionStart, end: e.selectionEnd, length: l, text: e.value.substr(e.selectionStart, l) }
          }) ||

          /* browser not supported */
          function() {
            return null
          }

      )()

    }

  , setSelection: function(start,end) {

      var e = this.$textarea[0]

      return (

          ('selectionStart' in e && function() {
              e.selectionStart = start
              e.selectionEnd = end
              return
          }) ||

          /* browser not supported */
          function() {
            return null
          }

      )()

    }

  , replaceSelection: function(text) {

      var e = this.$textarea[0]

      return (

          ('selectionStart' in e && function() {
              e.value = e.value.substr(0, e.selectionStart) + text + e.value.substr(e.selectionEnd, e.value.length)
              // Set cursor to the last replacement end
              e.selectionStart = e.value.length
              return this
          }) ||

          /* browser not supported */
          function() {
              e.value += text
              return jQuery(e)
          }

      )()

    }

  , getNextTab: function() {
      // Shift the nextTab
      if (this.$nextTab.length == 0) {
        return null
      } else {
        var nextTab, tab = this.$nextTab.shift()

        if (typeof tab == 'function') {
          nextTab = tab()
        } else if (typeof tab == 'object' && tab.length > 0) {
          nextTab = tab
        }

        return nextTab
      }
    }

  , setNextTab: function(start,end) {
      // Push new selection into nextTab collections
      if (typeof start == 'string') {
        var that = this
        this.$nextTab.push(function(){
          return that.findSelection(start)
        })
      } else if (typeof start == 'number' && typeof end == 'number') {
        var oldSelection = this.getSelection()

        this.setSelection(start,end)
        this.$nextTab.push(this.getSelection())

        this.setSelection(oldSelection.start,oldSelection.end)
      }

      return
    }

  , __parseButtonNameParam: function(nameParam) {
      var buttons = []

      if (typeof nameParam == 'string') {
        buttons = nameParam.split(',')
      } else {
        buttons = nameParam
      }

      return buttons
    }

  , enableButtons: function(name) {
      var buttons = this.__parseButtonNameParam(name),
        that = this

      $.each(buttons, function(i, v) {
        that.__alterButtons(buttons[i], function (el) {
          el.removeAttr('disabled')
        });
      })

      return this;
    }

  , disableButtons: function(name) {
      var buttons = this.__parseButtonNameParam(name),
        that = this

      $.each(buttons, function(i, v) {
        that.__alterButtons(buttons[i], function (el) {
          el.attr('disabled','disabled')
        });
      })

      return this;
    }

  , hideButtons: function(name) {
      var buttons = this.__parseButtonNameParam(name),
        that = this

      $.each(buttons, function(i, v) {
        that.__alterButtons(buttons[i], function (el) {
          el.addClass('hidden');
        });
      })

      return this;

    }

  , showButtons: function(name) {
      var buttons = this.__parseButtonNameParam(name),
        that = this

      $.each(buttons, function(i, v) {
        that.__alterButtons(buttons[i], function (el) {
          el.removeClass('hidden');
        });
      })

      return this;

    }

  , eventSupported: function(eventName) {
      var isSupported = eventName in this.$element
      if (!isSupported) {
        this.$element.setAttribute(eventName, 'return;')
        isSupported = typeof this.$element[eventName] === 'function'
      }
      return isSupported
    }

  , keyup: function (e) {
      var blocked = false
      switch(e.keyCode) {
        case 40: // down arrow
        case 38: // up arrow
        case 16: // shift
        case 17: // ctrl
        case 18: // alt
          break

        case 9: // tab
          var nextTab
          if (nextTab = this.getNextTab(),nextTab != null) {
            // Get the nextTab if exists
            var that = this
            setTimeout(function(){
              that.setSelection(nextTab.start,nextTab.end)
            },500)

            blocked = true
          } else {
            // The next tab memory contains nothing...
            // check the cursor position to determine tab action
            var cursor = this.getSelection()

            if (cursor.start == cursor.end && cursor.end == this.getContent().length) {
              // The cursor already reach the end of the content
              blocked = false

            } else {
              // Put the cursor to the end
              this.setSelection(this.getContent().length,this.getContent().length)

              blocked = true
            }
          }

          break

        case 13: // enter
          blocked = false
          break
        case 27: // escape
          if (this.$isFullscreen) this.setFullscreen(false)
          blocked = false
          break

        default:
          blocked = false
      }

      if (blocked) {
        e.stopPropagation()
        e.preventDefault()
      }

      this.$options.onChange(this)
    }

  , change: function(e) {
      this.$options.onChange(this);
      return this;
    }

  , focus: function (e) {
      var options = this.$options,
          isHideable = options.hideable,
          editor = this.$editor

      editor.addClass('active')

      // Blur other markdown(s)
      $(document).find('.md-editor').each(function(){
        if ($(this).attr('id') != editor.attr('id')) {
          var attachedMarkdown

          if (attachedMarkdown = $(this).find('textarea').data('markdown'),
              attachedMarkdown == null) {
              attachedMarkdown = $(this).find('div[data-provider="markdown-preview"]').data('markdown')
          }

          if (attachedMarkdown) {
            attachedMarkdown.blur()
          }
        }
      })

      // Trigger the onFocus hook
      options.onFocus(this);

      return this
    }

  , blur: function (e) {
      var options = this.$options,
          isHideable = options.hideable,
          editor = this.$editor,
          editable = this.$editable

      if (editor.hasClass('active') || this.$element.parent().length == 0) {
        editor.removeClass('active')

        if (isHideable) {

          // Check for editable elements
          if (editable.el != null) {
            // Build the original element
            var oldElement = $('<'+editable.type+'/>'),
                content = this.getContent(),
                currentContent = (typeof markdown == 'object') ? markdown.toHTML(content) : content

            $(editable.attrKeys).each(function(k,v) {
              oldElement.attr(editable.attrKeys[k],editable.attrValues[k])
            })

            // Get the editor content
            oldElement.html(currentContent)

            editor.replaceWith(oldElement)
          } else {
            editor.hide()

          }
        }

        // Trigger the onBlur hook
        options.onBlur(this)
      }

      return this
    }

  }

 /* MARKDOWN PLUGIN DEFINITION
  * ========================== */

  var old = $.fn.markdown

  $.fn.markdown = function (option) {
    return this.each(function () {
      var $this = $(this)
        , data = $this.data('markdown')
        , options = typeof option == 'object' && option
      if (!data) $this.data('markdown', (data = new Markdown(this, options)))
    })
  }

  $.fn.markdown.messages = {}

  $.fn.markdown.defaults = {
    /* Editor Properties */
    autofocus: false,
    hideable: false,
    savable:false,
    width: 'inherit',
    height: 'inherit',
    resize: 'none',
    iconlibrary: 'glyph',
    language: 'en',
    initialstate: 'editor',

    /* Buttons Properties */
    buttons: [
      [{
        name: 'groupFont',
        data: [{
          name: 'cmdBold',
          hotkey: 'Ctrl+B',
          title: 'Bold',
          icon: { glyph: 'glyphicon glyphicon-bold', fa: 'fa fa-bold', 'fa-3': 'icon-bold' },
          callback: function(e){
            // Give/remove ** surround the selection
            var chunk, cursor, selected = e.getSelection(), content = e.getContent()

            if (selected.length == 0) {
              // Give extra word
              chunk = e.__localize('strong text')
            } else {
              chunk = selected.text
            }

            // transform selection and set the cursor into chunked text
            if (content.substr(selected.start-2,2) == '**'
                && content.substr(selected.end,2) == '**' ) {
              e.setSelection(selected.start-2,selected.end+2)
              e.replaceSelection(chunk)
              cursor = selected.start-2
            } else {
              e.replaceSelection('**'+chunk+'**')
              cursor = selected.start+2
            }

            // Set the cursor
            e.setSelection(cursor,cursor+chunk.length)
          }
        },{
          name: 'cmdItalic',
          title: 'Italic',
          hotkey: 'Ctrl+I',
          icon: { glyph: 'glyphicon glyphicon-italic', fa: 'fa fa-italic', 'fa-3': 'icon-italic' },
          callback: function(e){
            // Give/remove * surround the selection
            var chunk, cursor, selected = e.getSelection(), content = e.getContent()

            if (selected.length == 0) {
              // Give extra word
              chunk = e.__localize('emphasized text')
            } else {
              chunk = selected.text
            }

            // transform selection and set the cursor into chunked text
            if (content.substr(selected.start-1,1) == '_'
                && content.substr(selected.end,1) == '_' ) {
              e.setSelection(selected.start-1,selected.end+1)
              e.replaceSelection(chunk)
              cursor = selected.start-1
            } else {
              e.replaceSelection('_'+chunk+'_')
              cursor = selected.start+1
            }

            // Set the cursor
            e.setSelection(cursor,cursor+chunk.length)
          }
        },{
          name: 'cmdHeading',
          title: 'Heading',
          hotkey: 'Ctrl+H',
          icon: { glyph: 'glyphicon glyphicon-header', fa: 'fa fa-header', 'fa-3': 'icon-font' },
          callback: function(e){
            // Append/remove ### surround the selection
            var chunk, cursor, selected = e.getSelection(), content = e.getContent(), pointer, prevChar

            if (selected.length == 0) {
              // Give extra word
              chunk = e.__localize('heading text')
            } else {
              chunk = selected.text + '\n';
            }

            // transform selection and set the cursor into chunked text
            if ((pointer = 4, content.substr(selected.start-pointer,pointer) == '### ')
                || (pointer = 3, content.substr(selected.start-pointer,pointer) == '###')) {
              e.setSelection(selected.start-pointer,selected.end)
              e.replaceSelection(chunk)
              cursor = selected.start-pointer
            } else if (selected.start > 0 && (prevChar = content.substr(selected.start-1,1), !!prevChar && prevChar != '\n')) {
              e.replaceSelection('\n\n### '+chunk)
              cursor = selected.start+6
            } else {
              // Empty string before element
              e.replaceSelection('### '+chunk)
              cursor = selected.start+4
            }

            // Set the cursor
            e.setSelection(cursor,cursor+chunk.length)
          }
        }]
      },{
        name: 'groupLink',
        data: [{
          name: 'cmdUrl',
          title: 'URL/Link',
          hotkey: 'Ctrl+L',
          icon: { glyph: 'glyphicon glyphicon-link', fa: 'fa fa-link', 'fa-3': 'icon-link' },
          callback: function(e){
            // Give [] surround the selection and prepend the link
            var chunk, cursor, selected = e.getSelection(), content = e.getContent(), link

            if (selected.length == 0) {
              // Give extra word
              chunk = e.__localize('enter link description here')
            } else {
              chunk = selected.text
            }

            link = prompt(e.__localize('Insert Hyperlink'),'http://')

            if (link != null && link != '' && link != 'http://' && link.substr(0,4) == 'http') {
              var sanitizedLink = $('<div>'+link+'</div>').text()

              // transform selection and set the cursor into chunked text
              e.replaceSelection('['+chunk+']('+sanitizedLink+')')
              cursor = selected.start+1

              // Set the cursor
              e.setSelection(cursor,cursor+chunk.length)
            }
          }
        },{
          name: 'cmdImage',
          title: 'Image',
          hotkey: 'Ctrl+G',
          icon: { glyph: 'glyphicon glyphicon-picture', fa: 'fa fa-picture-o', 'fa-3': 'icon-picture' },
          callback: function(e){
            // Give ![] surround the selection and prepend the image link
            var chunk, cursor, selected = e.getSelection(), content = e.getContent(), link

            if (selected.length == 0) {
              // Give extra word
              chunk = e.__localize('enter image description here')
            } else {
              chunk = selected.text
            }

            link = prompt(e.__localize('Insert Image Hyperlink'),'http://')

            if (link != null && link != '' && link != 'http://' && link.substr(0,4) == 'http') {
              var sanitizedLink = $('<div>'+link+'</div>').text()
              
              // transform selection and set the cursor into chunked text
              e.replaceSelection('!['+chunk+']('+sanitizedLink+' "'+e.__localize('enter image title here')+'")')
              cursor = selected.start+2

              // Set the next tab
              e.setNextTab(e.__localize('enter image title here'))

              // Set the cursor
              e.setSelection(cursor,cursor+chunk.length)
            }
          }
        }]
      },{
        name: 'groupMisc',
        data: [{
          name: 'cmdList',
          hotkey: 'Ctrl+U',
          title: 'Unordered List',
          icon: { glyph: 'glyphicon glyphicon-list', fa: 'fa fa-list', 'fa-3': 'icon-list-ul' },
          callback: function(e){
            // Prepend/Give - surround the selection
            var chunk, cursor, selected = e.getSelection(), content = e.getContent()

            // transform selection and set the cursor into chunked text
            if (selected.length == 0) {
              // Give extra word
              chunk = e.__localize('list text here')

              e.replaceSelection('- '+chunk)
              // Set the cursor
              cursor = selected.start+2

            } else {
              if (selected.text.indexOf('\n') < 0) {
                chunk = selected.text

                e.replaceSelection('- '+chunk)

                // Set the cursor
                cursor = selected.start+2
              } else {
                var list = []

                list = selected.text.split('\n')
                chunk = list[0]

                $.each(list,function(k,v) {
                  list[k] = '- '+v
                })

                e.replaceSelection('\n\n'+list.join('\n'))

                // Set the cursor
                cursor = selected.start+4
              }
            }

            // Set the cursor
            e.setSelection(cursor,cursor+chunk.length)
          }
        },
        {
          name: 'cmdListO',
          hotkey: 'Ctrl+O',
          title: 'Ordered List',
          icon: { glyph: 'glyphicon glyphicon-th-list', fa: 'fa fa-list-ol', 'fa-3': 'icon-list-ol' },
          callback: function(e) {

            // Prepend/Give - surround the selection
            var chunk, cursor, selected = e.getSelection(), content = e.getContent()

            // transform selection and set the cursor into chunked text
            if (selected.length == 0) {
              // Give extra word
              chunk = e.__localize('list text here')
              e.replaceSelection('1. '+chunk)
              // Set the cursor
              cursor = selected.start+3

            } else {
              if (selected.text.indexOf('\n') < 0) {
                chunk = selected.text

                e.replaceSelection('1. '+chunk)

                // Set the cursor
                cursor = selected.start+3
              } else {
                var list = []

                list = selected.text.split('\n')
                chunk = list[0]

                $.each(list,function(k,v) {
                  list[k] = '1. '+v
                })

                e.replaceSelection('\n\n'+list.join('\n'))

                // Set the cursor
                cursor = selected.start+5
              }
            }

            // Set the cursor
            e.setSelection(cursor,cursor+chunk.length)
          }
        },
        {
          name: 'cmdCode',
          hotkey: 'Ctrl+K',
          title: 'Code',
          icon: { glyph: 'glyphicon glyphicon-asterisk', fa: 'fa fa-code', 'fa-3': 'icon-code' },
          callback: function(e) {

            // Give/remove ** surround the selection
            var chunk, cursor, selected = e.getSelection(), content = e.getContent()

            if (selected.length == 0) {
              // Give extra word
              chunk = e.__localize('code text here')
            } else {
              chunk = selected.text
            }

            // transform selection and set the cursor into chunked text
            if (content.substr(selected.start-4,4) === '```\n'
                && content.substr(selected.end,4) === '\n```') {
              e.setSelection(selected.start-4, selected.end+4)
              e.replaceSelection(chunk)
              cursor = selected.start-4
            } else if (content.substr(selected.start-1,1) === '`'
                && content.substr(selected.end,1) === '`') {
              e.setSelection(selected.start-1,selected.end+1)
              e.replaceSelection(chunk)
              cursor = selected.start-1
            } else if (content.indexOf('\n') > -1) {
              e.replaceSelection('```\n'+chunk+'\n```')
              cursor = selected.start+4
            } else {
              e.replaceSelection('`'+chunk+'`')
              cursor = selected.start+1
            }

            // Set the cursor
            e.setSelection(cursor,cursor+chunk.length)
          }
        },
        {
          name: 'cmdQuote',
          hotkey: 'Ctrl+Q',
          title: 'Quote',
          icon: { glyph: 'glyphicon glyphicon-comment', fa: 'fa fa-quote-left', 'fa-3': 'icon-quote-left' },
          callback: function(e) {
            // Prepend/Give - surround the selection
            var chunk, cursor, selected = e.getSelection(), content = e.getContent()

            // transform selection and set the cursor into chunked text
            if (selected.length == 0) {
              // Give extra word
              chunk = e.__localize('quote here')
              e.replaceSelection('> '+chunk)
              // Set the cursor
              cursor = selected.start+2

            } else {
              if (selected.text.indexOf('\n') < 0) {
                chunk = selected.text

                e.replaceSelection('> '+chunk)

                // Set the cursor
                cursor = selected.start+2
              } else {
                var list = []

                list = selected.text.split('\n')
                chunk = list[0]

                $.each(list,function(k,v) {
                  list[k] = '> '+v
                })

                e.replaceSelection('\n\n'+list.join('\n'))

                // Set the cursor
                cursor = selected.start+4
              }
            }

            // Set the cursor
            e.setSelection(cursor,cursor+chunk.length)
          }
        }]
      },{
        name: 'groupUtil',
        data: [{
          name: 'cmdPreview',
          toggle: true,
          hotkey: 'Ctrl+P',
          title: 'Preview',
          btnText: 'Preview',
          btnClass: 'btn btn-primary btn-sm',
          icon: { glyph: 'glyphicon glyphicon-search', fa: 'fa fa-search', 'fa-3': 'icon-search' },
          callback: function(e){
            // Check the preview mode and toggle based on this flag
            var isPreview = e.$isPreview,content

            if (isPreview == false) {
              // Give flag that tell the editor enter preview mode
              e.showPreview()
            } else {
              e.hidePreview()
            }
          }
        }]
      }]
    ],
    additionalButtons:[], // Place to hook more buttons by code
    reorderButtonGroups:[],
    hiddenButtons:[], // Default hidden buttons
    disabledButtons:[], // Default disabled buttons
    footer: '',
    fullscreen: {
      enable: true,
      icons: {
        fullscreenOn: {
          fa: 'fa fa-expand',
          glyph: 'glyphicon glyphicon-fullscreen',
          'fa-3': 'icon-resize-full'
        },
        fullscreenOff: {
          fa: 'fa fa-compress',
          glyph: 'glyphicon glyphicon-fullscreen',
          'fa-3': 'icon-resize-small'
        }
      }
    },

    /* Events hook */
    onShow: function (e) {},
    onPreview: function (e) {},
    onSave: function (e) {},
    onBlur: function (e) {},
    onFocus: function (e) {},
    onChange: function(e) {},
    onFullscreen: function(e) {}
  }

  $.fn.markdown.Constructor = Markdown


 /* MARKDOWN NO CONFLICT
  * ==================== */

  $.fn.markdown.noConflict = function () {
    $.fn.markdown = old
    return this
  }

  /* MARKDOWN GLOBAL FUNCTION & DATA-API
  * ==================================== */
  var initMarkdown = function(el) {
    var $this = el

    if ($this.data('markdown')) {
      $this.data('markdown').showEditor()
      return
    }

    $this.markdown()
  }

  var blurNonFocused = function(e) {
    var $activeElement = $(document.activeElement)

    // Blur event
    $(document).find('.md-editor').each(function(){
      var $this            = $(this),
          focused          = $activeElement.closest('.md-editor')[0] === this,
          attachedMarkdown = $this.find('textarea').data('markdown') ||
                             $this.find('div[data-provider="markdown-preview"]').data('markdown')

      if (attachedMarkdown && !focused) {
        attachedMarkdown.blur()
      }
    })
  }

  $(document)
    .on('click.markdown.data-api', '[data-provide="markdown-editable"]', function (e) {
      initMarkdown($(this))
      e.preventDefault()
    })
    .on('click focusin', function (e) {
      blurNonFocused(e)
    })
    .ready(function(){
      $('textarea[data-provide="markdown"]').each(function(){
        initMarkdown($(this))
      })
    })

}(window.jQuery);