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bootstrap-markdown.js
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/* ===================================================
* bootstrap-markdown.js v2.10.0
* http://github.com/toopay/bootstrap-markdown
* ===================================================
* Copyright 2013-2016 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(factory) {
if (typeof define === "function" && define.amd) {
//RequireJS
define(["jquery"], factory);
} else if (typeof exports === 'object') {
//Backbone.js
factory(require('jquery'));
} else {
//Jquery plugin
factory(jQuery);
}
}(function($) {
"use strict";
/* MARKDOWN CLASS DEFINITION
* ========================== */
var Markdown = function(element, options) {
// @TODO : remove this BC on next major release
// @see : https://github.com/toopay/bootstrap-markdown/issues/109
var opts = ['autofocus', 'savable', 'hideable', 'width',
'height', 'resize', 'iconlibrary', 'language',
'footer', 'fullscreen', 'hiddenButtons', 'disabledButtons'
];
$.each(opts, function(_, opt) {
if (typeof $(element).data(opt) !== 'undefined') {
options = typeof options == 'object' ? options : {};
options[opt] = $(element).data(opt);
}
});
// End BC
// Class Properties
this.$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('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 mr-2'
});
for (z = 0; z < buttons.length; z++) {
var button = buttons[z],
buttonContainer, buttonIconContainer,
buttonHandler = ns + '-' + button.name,
buttonIcon = this.__getIcon(button),
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-secondary btn-sm').addClass(btnClass);
if (btnClass.match(/btn\-(primary|success|info|warning|danger|link)/)) {
buttonContainer.removeClass('btn-default btn-secondary');
}
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),
'keyup': $.proxy(this.keyup, this),
'change': $.proxy(this.change, this),
'select': $.proxy(this.select, this)
});
if (this.eventSupported('keydown')) {
this.$textarea.on('keydown', $.proxy(this.keydown, this));
}
if (this.eventSupported('keypress')) {
this.$textarea.on('keypress', $.proxy(this.keypress, this));
}
// Re-attach markdown data
this.$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) {
if(typeof src == 'object'){
var customIcon = this.$options.customIcons[src.name];
return typeof customIcon == 'undefined' ? src.icon[this.$options.iconlibrary] : customIcon;
} else {
return 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');
$('body').removeClass('md-nooverflow');
this.$options.onFullscreenExit(this);
if (this.$isPreview === true)
this.hidePreview().showPreview();
}
this.$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) {
// iterate the additional button groups
$.each(options.additionalButtons[0], function(idx, buttonGroup) {
// see if the group name of the addional group matches an existing group
var matchingGroups = $.grep(allBtnGroups, function(allButtonGroup, allIdx) {
return allButtonGroup.name === buttonGroup.name;
});
// if it matches add the addional buttons to that group, if not just add it to the all buttons group
if (matchingGroups.length > 0) {
matchingGroups[0].data = matchingGroups[0].data.concat(buttonGroup.data);
} else {
allBtnGroups.push(options.additionalButtons[0][idx]);
}
});
}
// 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);
// enable dropZone if available and configured
if (options.dropZoneOptions) {
if (this.$editor.dropzone) {
if(!options.dropZoneOptions.init) {
options.dropZoneOptions.init = function() {
var caretPos = 0;
this.on('drop', function(e) {
caretPos = textarea.prop('selectionStart');
});
this.on('success', function(file, path) {
var text = textarea.val();
textarea.val(text.substring(0, caretPos) + '\n\n' + text.substring(caretPos));
});
this.on('error', function(file, error, xhr) {
console.log('Error:', error);
});
};
}
this.$textarea.addClass('dropzone');
this.$editor.dropzone(options.dropZoneOptions);
} else {
console.log('dropZoneOptions was configured, but DropZone was not detected.');
}
}
// enable data-uris via drag and drop
if (options.enableDropDataUri === true) {
this.$editor.on('drop', function(e) {
var caretPos = textarea.prop('selectionStart');
e.stopPropagation();
e.preventDefault();
$.each(e.originalEvent.dataTransfer.files, function(index, file){
var fileReader = new FileReader();
fileReader.onload = (function(file) {
return function(e) {
var text = textarea.val();
textarea.val(text.substring(0, caretPos) + '\n<img src="'+ e.target.result +'" />\n' + text.substring(caretPos) );
};
})(file);
fileReader.readAsDataURL(file);
});
});
}
// Trigger the onShow hook
options.onShow(this);
return this;
},
parseContent: function(val) {
var content;
// parse with supported markdown parser
val = val || this.$textarea.val();
if (this.$options.parser) {
content = this.$options.parser(val);
} else 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 = $('<div/>', {
'class': 'md-preview',
'data-provider': 'markdown-preview'
}),
content,
callbackContent;
if (this.$isPreview === true) {
// Avoid sequenced element creation on missused scenario
// @see https://github.com/toopay/bootstrap-markdown/issues/170
return this;
}
// Give flag that tell the editor enter preview mode
this.$isPreview = true;
// Disable all buttons
this.disableButtons('all').enableButtons('cmdPreview');
// Try to get the content from callback
callbackContent = options.onPreview(this);
// Set the content based from the callback content if string otherwise parse value from textarea
content = typeof callbackContent == 'string' ? callbackContent : this.parseContent();
// Build preview element
replacementContainer.html(content);
if (afterContainer && afterContainer.attr('class') == 'md-footer') {
// If there is footer element, insert the preview container before it
replacementContainer.insertBefore(afterContainer);
} else {
// Otherwise, just append it after textarea
container.parent().append(replacementContainer);
}
// Set the preview element dimensions
replacementContainer.css({
"width": container.outerWidth() + 'px',
"min-height": container.outerHeight() + 'px',
"height": "auto"
});
if (this.$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.$options.disabledButtons);
// Perform any callback
this.$options.onPreviewEnd(this);
// 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(names) {
return typeof names == 'string' ?
names.split(' ') :
names;
},
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.$options.onChange(this);
return this;
},
select: function(e) {
this.$options.onSelect(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 = this.parseContent(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: 'fa',
language: 'en',
initialstate: 'editor',
parser: null,
dropZoneOptions: null,
enableDropDataUri: false,
/* Buttons Properties */
buttons: [
[{
name: 'groupFont',
data: [{
name: 'cmdBold',
hotkey: 'Ctrl+B',
title: 'Bold',
icon: {
fa: 'fa fa-bold',
'fa-3': 'icon-bold',
octicons: 'octicon octicon-bold'
},
callback: function(e) {
// Give/remove ** surround the selection
var chunk, cursor, selected = e.getSelection(),
content = e.getContent();