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bootstrap-markdown.js
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/* ===================================================
* 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() {
// Set the content
var val = this.$textarea.val();
if (typeof markdown == 'object') {
content = markdown.toHTML(val);
} else if (typeof marked == 'function') {
content = marked(val);
} else {
content = val;
}
return content;
}
, showPreview: function() {
// Give flag that tell the editor enter preview mode
this.$isPreview = true
// Disable all buttons
this.disableButtons('all').enableButtons('cmdPreview')
// Render the content asynchronously
var r = this.$options.onPreview(this, jQuery.proxy(this.showPreviewWithContent, this))
// Backward compatibility: if someone has an old callback, it will return
// something and we can just call the callback by ourselves
if (typeof r == 'string') {
this.showPreviewWithContent(r)
}
}
, showPreviewWithContent: function(content) {
var container = this.$textarea,
afterContainer = container.next(),
replacementContainer = $('<div/>',{'class':'md-preview','data-provider':'markdown-preview'})
// Build preview element
replacementContainer.html(content)
if (afterContainer && afterContainer.attr('class') == 'md-footer') {
// If there is footer element, insert the preview container before it
replacementContainer.insertBefore(afterContainer)
} else {
// Otherwise, just append it after textarea
container.parent().append(replacementContainer)
}
// Set the preview element dimensions
replacementContainer.css({
width: container.outerWidth() + 'px',
height: container.outerHeight() + 'px'
})
if (this.$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.push(nameParam)
} 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-font', '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