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medium-editor.js
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MediumEditor = function (elements, options) {
'use strict';
return this.init(elements, options);
}
if (typeof module === 'object') {
module.exports = MediumEditor;
}
(function (window, document) {
'use strict';
function extend(b, a) {
var prop;
if (b === undefined) {
return a;
}
for (prop in a) {
if (a.hasOwnProperty(prop) && b.hasOwnProperty(prop) === false) {
b[prop] = a[prop];
}
}
return b;
}
// http://stackoverflow.com/questions/5605401/insert-link-in-contenteditable-element
// by Tim Down
function saveSelection() {
var i,
len,
ranges,
sel = window.getSelection();
if (sel.getRangeAt && sel.rangeCount) {
ranges = [];
for (i = 0, len = sel.rangeCount; i < len; i += 1) {
ranges.push(sel.getRangeAt(i));
}
return ranges;
}
return null;
}
function restoreSelection(savedSel) {
var i,
len,
sel = window.getSelection();
if (savedSel) {
sel.removeAllRanges();
for (i = 0, len = savedSel.length; i < len; i += 1) {
sel.addRange(savedSel[i]);
}
}
}
// http://stackoverflow.com/questions/1197401/how-can-i-get-the-element-the-caret-is-in-with-javascript-when-using-contentedi
// by You
function getSelectionStart() {
var node = document.getSelection().anchorNode,
startNode = (node && node.nodeType === 3 ? node.parentNode : node);
return startNode;
}
// http://stackoverflow.com/questions/4176923/html-of-selected-text
// by Tim Down
function getSelectionHtml() {
var i,
html = '',
sel,
len,
container;
if (window.getSelection !== undefined) {
sel = window.getSelection();
if (sel.rangeCount) {
container = document.createElement('div');
for (i = 0, len = sel.rangeCount; i < len; i += 1) {
container.appendChild(sel.getRangeAt(i).cloneContents());
}
html = container.innerHTML;
}
} else if (document.selection !== undefined) {
if (document.selection.type === 'Text') {
html = document.selection.createRange().htmlText;
}
}
return html;
}
// https://github.com/jashkenas/underscore
function isElement(obj) {
return !!(obj && obj.nodeType === 1);
}
MediumEditor.prototype = {
defaults: {
allowMultiParagraphSelection: true,
anchorInputPlaceholder: 'Paste or type a link',
anchorPreviewHideDelay: 500,
buttons: ['bold', 'italic', 'underline', 'anchor', 'header1', 'header2', 'quote'],
buttonLabels: false,
checkLinkFormat: false,
cleanPastedHTML: false,
delay: 0,
diffLeft: 0,
diffTop: -10,
disableReturn: false,
disableDoubleReturn: false,
disableToolbar: false,
firstHeader: 'h3',
forcePlainText: true,
placeholder: 'Type your text',
secondHeader: 'h4',
targetBlank: false,
extensions: {}
},
// http://stackoverflow.com/questions/17907445/how-to-detect-ie11#comment30165888_17907562
// by rg89
isIE: ((navigator.appName === 'Microsoft Internet Explorer') || ((navigator.appName === 'Netscape') && (new RegExp('Trident/.*rv:([0-9]{1,}[.0-9]{0,})').exec(navigator.userAgent) !== null))),
init: function (elements, options) {
this.setElementSelection(elements);
if (this.elements.length === 0) {
return;
}
this.parentElements = ['p', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'blockquote', 'pre'];
this.id = document.querySelectorAll('.medium-editor-toolbar').length + 1;
this.options = extend(options, this.defaults);
return this.setup();
},
setup: function () {
this.isActive = true;
this.initElements()
.bindSelect()
.bindPaste()
.setPlaceholders()
.bindWindowActions();
},
initElements: function () {
this.updateElementList();
var i,
addToolbar = false;
for (i = 0; i < this.elements.length; i += 1) {
this.elements[i].setAttribute('contentEditable', true);
if (!this.elements[i].getAttribute('data-placeholder')) {
this.elements[i].setAttribute('data-placeholder', this.options.placeholder);
}
this.elements[i].setAttribute('data-medium-element', true);
this.bindParagraphCreation(i).bindReturn(i).bindTab(i);
if (!this.options.disableToolbar && !this.elements[i].getAttribute('data-disable-toolbar')) {
addToolbar = true;
}
}
// Init toolbar
if (addToolbar) {
this.initToolbar()
.bindButtons()
.bindAnchorForm()
.bindAnchorPreview();
}
return this;
},
setElementSelection: function (selector) {
this.elementSelection = selector;
this.updateElementList();
},
updateElementList: function () {
this.elements = typeof this.elementSelection === 'string' ? document.querySelectorAll(this.elementSelection) : this.elementSelection;
if (this.elements.nodeType === 1) {
this.elements = [this.elements];
}
},
serialize: function () {
var i,
elementid,
content = {};
for (i = 0; i < this.elements.length; i += 1) {
elementid = (this.elements[i].id !== '') ? this.elements[i].id : 'element-' + i;
content[elementid] = {
value: this.elements[i].innerHTML.trim()
};
}
return content;
},
/**
* Helper function to call a method with a number of parameters on all registered extensions.
* The function assures that the function exists before calling.
*
* @param {string} funcName name of the function to call
* @param [args] arguments passed into funcName
*/
callExtensions: function (funcName) {
if (arguments.length < 1) {
return;
}
var args = Array.prototype.slice.call(arguments, 1),
ext,
name;
for (name in this.options.extensions) {
if (this.options.extensions.hasOwnProperty(name)) {
ext = this.options.extensions[name];
if (ext[funcName] !== undefined) {
ext[funcName].apply(ext, args);
}
}
}
},
bindParagraphCreation: function (index) {
var self = this;
this.elements[index].addEventListener('keyup', function (e) {
var node = getSelectionStart(),
tagName;
if (node && node.getAttribute('data-medium-element') && node.children.length === 0 && !(self.options.disableReturn || node.getAttribute('data-disable-return'))) {
document.execCommand('formatBlock', false, 'p');
}
if (e.which === 13) {
node = getSelectionStart();
tagName = node.tagName.toLowerCase();
if (!(self.options.disableReturn || this.getAttribute('data-disable-return')) &&
tagName !== 'li' && !self.isListItemChild(node)) {
if (!e.shiftKey) {
document.execCommand('formatBlock', false, 'p');
}
if (tagName === 'a') {
document.execCommand('unlink', false, null);
}
}
}
});
return this;
},
isListItemChild: function (node) {
var parentNode = node.parentNode,
tagName = parentNode.tagName.toLowerCase();
while (this.parentElements.indexOf(tagName) === -1 && tagName !== 'div') {
if (tagName === 'li') {
return true;
}
parentNode = parentNode.parentNode;
if (parentNode && parentNode.tagName) {
tagName = parentNode.tagName.toLowerCase();
} else {
return false;
}
}
return false;
},
bindReturn: function (index) {
var self = this;
this.elements[index].addEventListener('keypress', function (e) {
if (e.which === 13) {
if (self.options.disableReturn || this.getAttribute('data-disable-return')) {
e.preventDefault();
} else if (self.options.disableDoubleReturn || this.getAttribute('data-disable-double-return')) {
var node = getSelectionStart();
if (node && node.innerText === '\n') {
e.preventDefault();
}
}
}
});
return this;
},
bindTab: function (index) {
this.elements[index].addEventListener('keydown', function (e) {
if (e.which === 9) {
// Override tab only for pre nodes
var tag = getSelectionStart().tagName.toLowerCase();
if (tag === 'pre') {
e.preventDefault();
document.execCommand('insertHtml', null, ' ');
}
}
});
return this;
},
buttonTemplate: function (btnType) {
var buttonLabels = this.getButtonLabels(this.options.buttonLabels),
buttonTemplates = {
'bold': '<button class="medium-editor-action medium-editor-action-bold" data-action="bold" data-element="b">' + buttonLabels.bold + '</button>',
'italic': '<button class="medium-editor-action medium-editor-action-italic" data-action="italic" data-element="i">' + buttonLabels.italic + '</button>',
'underline': '<button class="medium-editor-action medium-editor-action-underline" data-action="underline" data-element="u">' + buttonLabels.underline + '</button>',
'strikethrough': '<button class="medium-editor-action medium-editor-action-strikethrough" data-action="strikethrough" data-element="strike"><strike>A</strike></button>',
'superscript': '<button class="medium-editor-action medium-editor-action-superscript" data-action="superscript" data-element="sup">' + buttonLabels.superscript + '</button>',
'subscript': '<button class="medium-editor-action medium-editor-action-subscript" data-action="subscript" data-element="sub">' + buttonLabels.subscript + '</button>',
'anchor': '<button class="medium-editor-action medium-editor-action-anchor" data-action="anchor" data-element="a">' + buttonLabels.anchor + '</button>',
'image': '<button class="medium-editor-action medium-editor-action-image" data-action="image" data-element="img">' + buttonLabels.image + '</button>',
'header1': '<button class="medium-editor-action medium-editor-action-header1" data-action="append-' + this.options.firstHeader + '" data-element="' + this.options.firstHeader + '">' + buttonLabels.header1 + '</button>',
'header2': '<button class="medium-editor-action medium-editor-action-header2" data-action="append-' + this.options.secondHeader + '" data-element="' + this.options.secondHeader + '">' + buttonLabels.header2 + '</button>',
'quote': '<button class="medium-editor-action medium-editor-action-quote" data-action="append-blockquote" data-element="blockquote">' + buttonLabels.quote + '</button>',
'orderedlist': '<button class="medium-editor-action medium-editor-action-orderedlist" data-action="insertorderedlist" data-element="ol">' + buttonLabels.orderedlist + '</button>',
'unorderedlist': '<button class="medium-editor-action medium-editor-action-unorderedlist" data-action="insertunorderedlist" data-element="ul">' + buttonLabels.unorderedlist + '</button>',
'pre': '<button class="medium-editor-action medium-editor-action-pre" data-action="append-pre" data-element="pre">' + buttonLabels.pre + '</button>',
'indent': '<button class="medium-editor-action medium-editor-action-indent" data-action="indent" data-element="ul">' + buttonLabels.indent + '</button>',
'outdent': '<button class="medium-editor-action medium-editor-action-outdent" data-action="outdent" data-element="ul">' + buttonLabels.outdent + '</button>'
};
return buttonTemplates[btnType] || false;
},
// TODO: break method
getButtonLabels: function (buttonLabelType) {
var customButtonLabels,
attrname,
buttonLabels = {
'bold': '<b>B</b>',
'italic': '<b><i>I</i></b>',
'underline': '<b><u>U</u></b>',
'superscript': '<b>x<sup>1</sup></b>',
'subscript': '<b>x<sub>1</sub></b>',
'anchor': '<b>#</b>',
'image': '<b>image</b>',
'header1': '<b>H1</b>',
'header2': '<b>H2</b>',
'quote': '<b>“</b>',
'orderedlist': '<b>1.</b>',
'unorderedlist': '<b>•</b>',
'pre': '<b>0101</b>',
'indent': '<b>→</b>',
'outdent': '<b>←</b>'
};
if (buttonLabelType === 'fontawesome') {
customButtonLabels = {
'bold': '<i class="fa fa-bold"></i>',
'italic': '<i class="fa fa-italic"></i>',
'underline': '<i class="fa fa-underline"></i>',
'superscript': '<i class="fa fa-superscript"></i>',
'subscript': '<i class="fa fa-subscript"></i>',
'anchor': '<i class="fa fa-link"></i>',
'image': '<i class="fa fa-picture-o"></i>',
'quote': '<i class="fa fa-quote-right"></i>',
'orderedlist': '<i class="fa fa-list-ol"></i>',
'unorderedlist': '<i class="fa fa-list-ul"></i>',
'pre': '<i class="fa fa-code fa-lg"></i>',
'indent': '<i class="fa fa-indent"></i>',
'outdent': '<i class="fa fa-outdent"></i>'
};
} else if (typeof buttonLabelType === 'object') {
customButtonLabels = buttonLabelType;
}
if (typeof customButtonLabels === 'object') {
for (attrname in customButtonLabels) {
if (customButtonLabels.hasOwnProperty(attrname)) {
buttonLabels[attrname] = customButtonLabels[attrname];
}
}
}
return buttonLabels;
},
initToolbar: function () {
if (this.toolbar) {
return this;
}
this.toolbar = this.createToolbar();
this.keepToolbarAlive = false;
this.anchorForm = this.toolbar.querySelector('.medium-editor-toolbar-form-anchor');
this.anchorInput = this.anchorForm.querySelector('input');
this.toolbarActions = this.toolbar.querySelector('.medium-editor-toolbar-actions');
this.anchorPreview = this.createAnchorPreview();
return this;
},
createToolbar: function () {
var toolbar = document.createElement('div');
toolbar.id = 'medium-editor-toolbar-' + this.id;
toolbar.className = 'medium-editor-toolbar';
toolbar.appendChild(this.toolbarButtons());
toolbar.appendChild(this.toolbarFormAnchor());
document.body.appendChild(toolbar);
return toolbar;
},
//TODO: actionTemplate
toolbarButtons: function () {
var btns = this.options.buttons,
ul = document.createElement('ul'),
li,
i,
btn,
ext;
ul.id = 'medium-editor-toolbar-actions';
ul.className = 'medium-editor-toolbar-actions clearfix';
for (i = 0; i < btns.length; i += 1) {
if (this.options.extensions.hasOwnProperty(btns[i])) {
ext = this.options.extensions[btns[i]];
btn = ext.getButton !== undefined ? ext.getButton() : null;
} else {
btn = this.buttonTemplate(btns[i]);
}
if (btn) {
li = document.createElement('li');
if (isElement(btn)) {
li.appendChild(btn);
} else {
li.innerHTML = btn;
}
ul.appendChild(li);
}
}
return ul;
},
toolbarFormAnchor: function () {
var anchor = document.createElement('div'),
input = document.createElement('input'),
a = document.createElement('a');
a.setAttribute('href', '#');
a.innerHTML = '×';
input.setAttribute('type', 'text');
input.setAttribute('placeholder', this.options.anchorInputPlaceholder);
anchor.className = 'medium-editor-toolbar-form-anchor';
anchor.id = 'medium-editor-toolbar-form-anchor';
anchor.appendChild(input);
anchor.appendChild(a);
return anchor;
},
bindSelect: function () {
var self = this,
timer = '',
i;
this.checkSelectionWrapper = function (e) {
// Do not close the toolbar when bluring the editable area and clicking into the anchor form
if (e && self.clickingIntoArchorForm(e)) {
return false;
}
clearTimeout(timer);
timer = setTimeout(function () {
self.checkSelection();
}, self.options.delay);
};
document.documentElement.addEventListener('mouseup', this.checkSelectionWrapper);
for (i = 0; i < this.elements.length; i += 1) {
this.elements[i].addEventListener('keyup', this.checkSelectionWrapper);
this.elements[i].addEventListener('blur', this.checkSelectionWrapper);
}
return this;
},
checkSelection: function () {
var newSelection,
selectionElement;
if (this.keepToolbarAlive !== true && !this.options.disableToolbar) {
newSelection = window.getSelection();
if (newSelection.toString().trim() === '' ||
(this.options.allowMultiParagraphSelection === false && this.hasMultiParagraphs())) {
this.hideToolbarActions();
} else {
selectionElement = this.getSelectionElement();
if (!selectionElement || selectionElement.getAttribute('data-disable-toolbar')) {
this.hideToolbarActions();
} else {
this.checkSelectionElement(newSelection, selectionElement);
}
}
}
return this;
},
clickingIntoArchorForm: function (e) {
var self = this;
if (e.type && e.type.toLowerCase() === 'blur' && e.relatedTarget && e.relatedTarget === self.anchorInput) {
return true;
}
return false;
},
hasMultiParagraphs: function () {
var selectionHtml = getSelectionHtml().replace(/<[\S]+><\/[\S]+>/gim, ''),
hasMultiParagraphs = selectionHtml.match(/<(p|h[0-6]|blockquote)>([\s\S]*?)<\/(p|h[0-6]|blockquote)>/g);
return (hasMultiParagraphs ? hasMultiParagraphs.length : 0);
},
checkSelectionElement: function (newSelection, selectionElement) {
var i;
this.selection = newSelection;
this.selectionRange = this.selection.getRangeAt(0);
for (i = 0; i < this.elements.length; i += 1) {
if (this.elements[i] === selectionElement) {
this.setToolbarButtonStates()
.setToolbarPosition()
.showToolbarActions();
return;
}
}
this.hideToolbarActions();
},
getSelectionElement: function () {
var selection = window.getSelection(),
range, current, parent,
result,
getMediumElement = function (e) {
var localParent = e;
try {
while (!localParent.getAttribute('data-medium-element')) {
localParent = localParent.parentNode;
}
} catch (errb) {
return false;
}
return localParent;
};
// First try on current node
try {
range = selection.getRangeAt(0);
current = range.commonAncestorContainer;
parent = current.parentNode;
if (current.getAttribute('data-medium-element')) {
result = current;
} else {
result = getMediumElement(parent);
}
// If not search in the parent nodes.
} catch (err) {
result = getMediumElement(parent);
}
return result;
},
setToolbarPosition: function () {
var buttonHeight = 50,
selection = window.getSelection(),
range = selection.getRangeAt(0),
boundary = range.getBoundingClientRect(),
defaultLeft = (this.options.diffLeft) - (this.toolbar.offsetWidth / 2),
middleBoundary = (boundary.left + boundary.right) / 2,
halfOffsetWidth = this.toolbar.offsetWidth / 2;
if (boundary.top < buttonHeight) {
this.toolbar.classList.add('medium-toolbar-arrow-over');
this.toolbar.classList.remove('medium-toolbar-arrow-under');
this.toolbar.style.top = buttonHeight + boundary.bottom - this.options.diffTop + window.pageYOffset - this.toolbar.offsetHeight + 'px';
} else {
this.toolbar.classList.add('medium-toolbar-arrow-under');
this.toolbar.classList.remove('medium-toolbar-arrow-over');
this.toolbar.style.top = boundary.top + this.options.diffTop + window.pageYOffset - this.toolbar.offsetHeight + 'px';
}
if (middleBoundary < halfOffsetWidth) {
this.toolbar.style.left = defaultLeft + halfOffsetWidth + 'px';
} else if ((window.innerWidth - middleBoundary) < halfOffsetWidth) {
this.toolbar.style.left = window.innerWidth + defaultLeft - halfOffsetWidth + 'px';
} else {
this.toolbar.style.left = defaultLeft + middleBoundary + 'px';
}
this.hideAnchorPreview();
return this;
},
setToolbarButtonStates: function () {
var buttons = this.toolbarActions.querySelectorAll('button'),
i;
for (i = 0; i < buttons.length; i += 1) {
buttons[i].classList.remove('medium-editor-button-active');
}
this.checkActiveButtons();
return this;
},
checkActiveButtons: function () {
var elements = Array.prototype.slice.call(this.elements),
parentNode = this.selection.anchorNode;
if (!parentNode.tagName) {
parentNode = this.selection.anchorNode.parentNode;
}
while (parentNode.tagName !== undefined && this.parentElements.indexOf(parentNode.tagName.toLowerCase) === -1) {
this.activateButton(parentNode.tagName.toLowerCase());
this.callExtensions('checkState', parentNode);
// we can abort the search upwards if we leave the contentEditable element
if (elements.indexOf(parentNode) !== -1) {
break;
}
parentNode = parentNode.parentNode;
}
},
activateButton: function (tag) {
var el = this.toolbar.querySelector('[data-element="' + tag + '"]');
if (el !== null && el.className.indexOf('medium-editor-button-active') === -1) {
el.className += ' medium-editor-button-active';
}
},
bindButtons: function () {
var buttons = this.toolbar.querySelectorAll('button'),
i,
self = this,
triggerAction = function (e) {
e.preventDefault();
e.stopPropagation();
if (self.selection === undefined) {
self.checkSelection();
}
if (this.className.indexOf('medium-editor-button-active') > -1) {
this.classList.remove('medium-editor-button-active');
} else {
this.className += ' medium-editor-button-active';
}
if (this.hasAttribute('data-action')) {
self.execAction(this.getAttribute('data-action'), e);
}
};
for (i = 0; i < buttons.length; i += 1) {
buttons[i].addEventListener('click', triggerAction);
}
this.setFirstAndLastItems(buttons);
return this;
},
setFirstAndLastItems: function (buttons) {
if (buttons.length > 0) {
buttons[0].className += ' medium-editor-button-first';
buttons[buttons.length - 1].className += ' medium-editor-button-last';
}
return this;
},
execAction: function (action, e) {
if (action.indexOf('append-') > -1) {
this.execFormatBlock(action.replace('append-', ''));
this.setToolbarPosition();
this.setToolbarButtonStates();
} else if (action === 'anchor') {
this.triggerAnchorAction(e);
} else if (action === 'image') {
document.execCommand('insertImage', false, window.getSelection());
} else {
document.execCommand(action, false, null);
this.setToolbarPosition();
}
},
triggerAnchorAction: function () {
if (this.selection.anchorNode.parentNode.tagName.toLowerCase() === 'a') {
document.execCommand('unlink', false, null);
} else {
if (this.anchorForm.style.display === 'block') {
this.showToolbarActions();
} else {
this.showAnchorForm();
}
}
return this;
},
execFormatBlock: function (el) {
var selectionData = this.getSelectionData(this.selection.anchorNode);
// FF handles blockquote differently on formatBlock
// allowing nesting, we need to use outdent
// https://developer.mozilla.org/en-US/docs/Rich-Text_Editing_in_Mozilla
if (el === 'blockquote' && selectionData.el &&
selectionData.el.parentNode.tagName.toLowerCase() === 'blockquote') {
return document.execCommand('outdent', false, null);
}
if (selectionData.tagName === el) {
el = 'p';
}
// When IE we need to add <> to heading elements and
// blockquote needs to be called as indent
// http://stackoverflow.com/questions/10741831/execcommand-formatblock-headings-in-ie
// http://stackoverflow.com/questions/1816223/rich-text-editor-with-blockquote-function/1821777#1821777
if (this.isIE) {
if (el === 'blockquote') {
return document.execCommand('indent', false, el);
}
el = '<' + el + '>';
}
return document.execCommand('formatBlock', false, el);
},
getSelectionData: function (el) {
var tagName;
if (el && el.tagName) {
tagName = el.tagName.toLowerCase();
}
while (el && this.parentElements.indexOf(tagName) === -1) {
el = el.parentNode;
if (el && el.tagName) {
tagName = el.tagName.toLowerCase();
}
}
return {
el: el,
tagName: tagName
};
},
getFirstChild: function (el) {
var firstChild = el.firstChild;
while (firstChild !== null && firstChild.nodeType !== 1) {
firstChild = firstChild.nextSibling;
}
return firstChild;
},
hideToolbarActions: function () {
this.keepToolbarAlive = false;
if (this.toolbar !== undefined) {
this.toolbar.classList.remove('medium-editor-toolbar-active');
}
},
showToolbarActions: function () {
var self = this,
timer;
this.anchorForm.style.display = 'none';
this.toolbarActions.style.display = 'block';
this.keepToolbarAlive = false;
clearTimeout(timer);
timer = setTimeout(function () {
if (self.toolbar && !self.toolbar.classList.contains('medium-editor-toolbar-active')) {
self.toolbar.classList.add('medium-editor-toolbar-active');
}
}, 100);
},
showAnchorForm: function (link_value) {
this.toolbarActions.style.display = 'none';
this.savedSelection = saveSelection();
this.anchorForm.style.display = 'block';
this.keepToolbarAlive = true;
this.anchorInput.focus();
this.anchorInput.value = link_value || '';
},
bindAnchorForm: function () {
var linkCancel = this.anchorForm.querySelector('a'),
self = this;
this.anchorForm.addEventListener('click', function (e) {
e.stopPropagation();
});
this.anchorInput.addEventListener('keyup', function (e) {
if (e.keyCode === 13) {
e.preventDefault();
self.createLink(this);
}
});
this.anchorInput.addEventListener('click', function (e) {
// make sure not to hide form when cliking into the input
e.stopPropagation();
self.keepToolbarAlive = true;
});
this.anchorInput.addEventListener('blur', function () {
self.keepToolbarAlive = false;
self.checkSelection();
});
linkCancel.addEventListener('click', function (e) {
e.preventDefault();
self.showToolbarActions();
restoreSelection(self.savedSelection);
});
return this;
},
hideAnchorPreview: function () {
this.anchorPreview.classList.remove('medium-editor-anchor-preview-active');
},
// TODO: break method
showAnchorPreview: function (anchorEl) {
if (this.anchorPreview.classList.contains('medium-editor-anchor-preview-active')) {
return true;
}
var self = this,
buttonHeight = 40,
boundary = anchorEl.getBoundingClientRect(),
middleBoundary = (boundary.left + boundary.right) / 2,
halfOffsetWidth,
defaultLeft,
timer;
self.anchorPreview.querySelector('i').textContent = anchorEl.href;
halfOffsetWidth = self.anchorPreview.offsetWidth / 2;
defaultLeft = self.options.diffLeft - halfOffsetWidth;
clearTimeout(timer);
timer = setTimeout(function () {
if (self.anchorPreview && !self.anchorPreview.classList.contains('medium-editor-anchor-preview-active')) {
self.anchorPreview.classList.add('medium-editor-anchor-preview-active');
}
}, 100);
self.observeAnchorPreview(anchorEl);
self.anchorPreview.classList.add('medium-toolbar-arrow-over');
self.anchorPreview.classList.remove('medium-toolbar-arrow-under');
self.anchorPreview.style.top = Math.round(buttonHeight + boundary.bottom - self.options.diffTop + window.pageYOffset - self.anchorPreview.offsetHeight) + 'px';
if (middleBoundary < halfOffsetWidth) {
self.anchorPreview.style.left = defaultLeft + halfOffsetWidth + 'px';
} else if ((window.innerWidth - middleBoundary) < halfOffsetWidth) {
self.anchorPreview.style.left = window.innerWidth + defaultLeft - halfOffsetWidth + 'px';
} else {
self.anchorPreview.style.left = defaultLeft + middleBoundary + 'px';
}
return this;
},
// TODO: break method
observeAnchorPreview: function (anchorEl) {
var self = this,
lastOver = (new Date()).getTime(),
over = true,
stamp = function () {
lastOver = (new Date()).getTime();
over = true;
},
unstamp = function (e) {
if (!e.relatedTarget || !/anchor-preview/.test(e.relatedTarget.className)) {
over = false;
}
},
interval_timer = setInterval(function () {
if (over) {
return true;
}
var durr = (new Date()).getTime() - lastOver;
if (durr > self.options.anchorPreviewHideDelay) {
// hide the preview 1/2 second after mouse leaves the link
self.hideAnchorPreview();
// cleanup
clearInterval(interval_timer);
self.anchorPreview.removeEventListener('mouseover', stamp);
self.anchorPreview.removeEventListener('mouseout', unstamp);
anchorEl.removeEventListener('mouseover', stamp);
anchorEl.removeEventListener('mouseout', unstamp);
}
}, 200);
self.anchorPreview.addEventListener('mouseover', stamp);
self.anchorPreview.addEventListener('mouseout', unstamp);
anchorEl.addEventListener('mouseover', stamp);
anchorEl.addEventListener('mouseout', unstamp);
},
createAnchorPreview: function () {
var self = this,
anchorPreview = document.createElement('div');
anchorPreview.id = 'medium-editor-anchor-preview-' + this.id;
anchorPreview.className = 'medium-editor-anchor-preview';
anchorPreview.innerHTML = this.anchorPreviewTemplate();
document.body.appendChild(anchorPreview);
anchorPreview.addEventListener('click', function () {
self.anchorPreviewClickHandler();
});
return anchorPreview;
},
anchorPreviewTemplate: 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>';
},
anchorPreviewClickHandler: function (e) {
if (this.activeAnchor) {
var self = this,
range = document.createRange(),
sel = window.getSelection();
range.selectNodeContents(self.activeAnchor);
sel.removeAllRanges();
sel.addRange(range);
setTimeout(function () {
if (self.activeAnchor) {
self.showAnchorForm(self.activeAnchor.href);
}
self.keepToolbarAlive = false;
}, 100 + self.options.delay);
}
this.hideAnchorPreview();
},
editorAnchorObserver: function (e) {
var self = this,
overAnchor = true,
leaveAnchor = function () {
// mark the anchor as no longer hovered, and stop listening
overAnchor = false;
self.activeAnchor.removeEventListener('mouseout', leaveAnchor);
};
if (e.target && e.target.tagName.toLowerCase() === 'a') {
// Detect empty href attributes
// The browser will make href="" or href="#top"
// into absolute urls when accessed as e.targed.href, so check the html
if (!/href=["']\S+["']/.test(e.target.outerHTML) || /href=["']#\S+["']/.test(e.target.outerHTML)) {
return true;
}
// only show when hovering on anchors
if (this.toolbar.classList.contains('medium-editor-toolbar-active')) {
// only show when toolbar is not present
return true;
}
this.activeAnchor = e.target;
this.activeAnchor.addEventListener('mouseout', leaveAnchor);
// show the anchor preview according to the configured delay
// if the mouse has not left the anchor tag in that time
setTimeout(function () {
if (overAnchor) {
self.showAnchorPreview(e.target);
}
}, self.options.delay);
}
},
bindAnchorPreview: function (index) {
var i, self = this;
this.editorAnchorObserverWrapper = function (e) {
self.editorAnchorObserver(e);
};
for (i = 0; i < this.elements.length; i += 1) {
this.elements[i].addEventListener('mouseover', this.editorAnchorObserverWrapper);
}
return this;
},
checkLinkFormat: function (value) {
var re = /^https?:\/\//;
if (value.match(re)) {
return value;
}
return "http://" + value;
},
setTargetBlank: function () {
var el = getSelectionStart(),
i;
if (el.tagName.toLowerCase() === 'a') {
el.target = '_blank';
} else {
el = el.getElementsByTagName('a');
for (i = 0; i < el.length; i += 1) {
el[i].target = '_blank';
}
}
},
createLink: function (input) {
restoreSelection(this.savedSelection);
if (this.options.checkLinkFormat) {
input.value = this.checkLinkFormat(input.value);
}
document.execCommand('createLink', false, input.value);
if (this.options.targetBlank) {
this.setTargetBlank();
}
this.showToolbarActions();
input.value = '';
},
bindWindowActions: function () {