function InlineEditor(elements, options) {
    'use strict';
    return this.init(elements, options);
}

if (typeof module === 'object') {
    module.exports = InlineEditor;
}

(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;
    }

    InlineEditor.prototype = {
        defaults: {
            allowMultiParagraphSelection: true,
            anchorInputPlaceholder: 'Paste or type a link...',
            buttons: ['bold', 'italic', 'underline', 'anchor', 'header1', 'header2', 'quote'],
            buttonLabels: 'fontawesome',
            delay: 0,
            diffLeft: 0,
            diffTop: -10,
            disableReturn: false,
            disableToolbar: false,
            firstHeader: 'h3',
            forcePlainText: true,
            placeholder: 'Type your text...',
            secondHeader: 'h4',
            targetBlank: false
        },

        init: function (elements, options) {
            this.elements = typeof elements === 'string' ? document.querySelectorAll(elements) : elements;
            if (this.elements.length === 0) {
                return;
            }
            this.isActive = true;
            this.parentElements = ['p', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'blockquote', 'pre'];
            this.id = document.querySelectorAll('.inline-editor-toolbar').length + 1;
            this.options = extend(options, this.defaults);
            return this.initElements()
                       .bindSelect()
                       .bindPaste()
                       .setPlaceholders()
                       .bindWindowActions();
        },

        initElements: function () {
            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-inline-editor-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();
            }
            return this;
        },

        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;
        },

        bindParagraphCreation: function (index) {
            var self = this;
            this.elements[index].addEventListener('keyup', function (e) {
                var node = getSelectionStart(),
                    tagName;
                if (node && node.getAttribute('data-inline-editor-element') && node.children.length === 0
                        && !(self.options.disableReturn || node.getAttribute('data-disable-return'))) {
                    document.execCommand('formatBlock', false, 'p');
                }
                if (e.which === 13 && !e.shiftKey) {
                    node = getSelectionStart();
                    tagName = node.tagName.toLowerCase();
                    if (!(self.options.disableReturn || this.getAttribute('data-disable-return'))
                            && tagName !== 'li' && !self.isListItemChild(node)) {
                        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();
                    }
                }
            });
            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, '    ');
                    }
                }
            });
        },

        buttonTemplate: function (btnType) {
            var buttonLabels = this.getButtonLabels(this.options.buttonLabels),
                buttonTemplates = {
                    'bold': '<li><button class="inline-editor-action inline-editor-action-bold" data-action="bold" data-element="b">' + buttonLabels.bold + '</button></li>',
                    'italic': '<li><button class="inline-editor-action inline-editor-action-italic" data-action="italic" data-element="i">' + buttonLabels.italic + '</button></li>',
                    'underline': '<li><button class="inline-editor-action inline-editor-action-underline" data-action="underline" data-element="u">' + buttonLabels.underline + '</button></li>',
                    'strikethrough': '<li><button class="inline-editor-action inline-editor-action-strikethrough" data-action="strikethrough" data-element="strike"><strike>A</strike></button></li>',
                    'superscript': '<li><button class="inline-editor-action inline-editor-action-superscript" data-action="superscript" data-element="sup">' + buttonLabels.superscript + '</button></li>',
                    'subscript': '<li><button class="inline-editor-action inline-editor-action-subscript" data-action="subscript" data-element="sub">' + buttonLabels.subscript + '</button></li>',
                    'anchor': '<li><button class="inline-editor-action inline-editor-action-anchor" data-action="anchor" data-element="a">' + buttonLabels.anchor + '</button></li>',
                    'header1': '<li><button class="inline-editor-action inline-editor-action-header1" data-action="append-' + this.options.firstHeader + '" data-element="' + this.options.firstHeader + '">' + buttonLabels.header1 + '</button></li>',
                    'header2': '<li><button class="inline-editor-action inline-editor-action-header2" data-action="append-' + this.options.secondHeader + '" data-element="' + this.options.secondHeader + '">' + buttonLabels.header2 + '</button></li>',
                    'quote': '<li><button class="inline-editor-action inline-editor-action-quote" data-action="append-blockquote" data-element="blockquote">' + buttonLabels.quote + '</button></li>',
                    'orderedlist': '<li><button class="inline-editor-action inline-editor-action-orderedlist" data-action="insertorderedlist" data-element="ol">' + buttonLabels.orderedlist + '</button></li>',
                    'unorderedlist': '<li><button class="inline-editor-action inline-editor-action-unorderedlist" data-action="insertunorderedlist" data-element="ul">' + buttonLabels.unorderedlist + '</button></li>',
                    'pre': '<li><button class="inline-editor-action inline-editor-action-pre" data-action="append-pre" data-element="pre">' + buttonLabels.pre + '</button></li>'
                };
            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</sup></b>',
                    'anchor': '<b>#</b>',
                    'header1': '<b>H1</b>',
                    'header2': '<b>H2</b>',
                    'quote': '<b>&ldquo;</b>',
                    'orderedlist': '<b>1.</b>',
                    'unorderedlist': '<b>&bull;</b>',
                    'pre': '<b>0101</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>',
                    '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>'
                };
            } 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;
        },

        //TODO: actionTemplate
        toolbarTemplate: function () {
            var btns = this.options.buttons,
                html = '<ul id="inline-editor-toolbar-actions" class="inline-editor-toolbar-actions clearfix">',
                i,
                tpl;

            for (i = 0; i < btns.length; i += 1) {
                tpl = this.buttonTemplate(btns[i]);
                if (tpl) {
                    html += tpl;
                }
            }
            html += '</ul>' +
                '<div class="inline-editor-toolbar-form-anchor" id="inline-editor-toolbar-form-anchor">' +
                '    <input type="text" value="" placeholder="' + this.options.anchorInputPlaceholder + '">' +
                '    <a href="#">&times;</a>' +
                '</div>';
            return html;
        },

        initToolbar: function () {
            if (this.toolbar) {
                return this;
            }
            this.toolbar = this.createToolbar();
            this.keepToolbarAlive = false;
            this.anchorForm = this.toolbar.querySelector('.inline-editor-toolbar-form-anchor');
            this.anchorInput = this.anchorForm.querySelector('input');
            this.toolbarActions = this.toolbar.querySelector('.inline-editor-toolbar-actions');
            return this;
        },

        createToolbar: function () {
            var toolbar = document.createElement('div');
            toolbar.id = 'inline-editor-toolbar-' + this.id;
            toolbar.className = 'inline-editor-toolbar';
            toolbar.innerHTML = this.toolbarTemplate();
            document.getElementsByTagName('body')[0].appendChild(toolbar);
            return toolbar;
        },

        bindSelect: function () {
            var self = this,
                timer = '',
                i;
            this.checkSelectionWrapper = function (e) {
                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 i,
                newSelection,
                hasMultiParagraphs,
                selectionHtml,
                selectionElement;
            if (this.keepToolbarAlive !== true && !this.options.disableToolbar) {
                newSelection = window.getSelection();
                selectionHtml = getSelectionHtml();
                selectionHtml = selectionHtml.replace(/<[\S]+><\/[\S]+>/gim, '');
                // Check if selection is between multi paragraph <p>.
                hasMultiParagraphs = selectionHtml.match(/<(p|h[0-6]|blockquote)>([\s\S]*?)<\/(p|h[0-6]|blockquote)>/g);
                hasMultiParagraphs = hasMultiParagraphs ? hasMultiParagraphs.length : 0;
                if (newSelection.toString().trim() === ''
                        || (this.options.allowMultiParagraphSelection === false && hasMultiParagraphs)) {
                    this.hideToolbarActions();
                } else {
                    selectionElement = this.getSelectionElement();
                    if (!selectionElement || selectionElement.getAttribute('data-disable-toolbar')) {
                        this.hideToolbarActions();
                    } else {
                        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();
                    }
                }
            }
            return this;
        },

        getSelectionElement: function () {
            var selection = window.getSelection(),
                range = selection.getRangeAt(0),
                current = range.commonAncestorContainer,
                parent = current.parentNode,
                result,
                getInlineElement = function(e) {
                    var parent = e;
                    try {
                        while (!parent.getAttribute('data-inline-editor-element')) {
                            parent = parent.parentNode;
                        }
                    } catch (errb) {
                        return false;
                    }
                    return parent;
                };
            // First try on current node
            try {
                if (current.getAttribute('data-inline-editor-element')) {
                    result = current;
                } else {
                    result = getInlineElement(parent);
                }
            // If not search in the parent nodes.
            } catch (err) {
                result = getInlineElement(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('inline-toolbar-arrow-over');
                this.toolbar.classList.remove('inline-toolbar-arrow-under');
                this.toolbar.style.top = buttonHeight + boundary.bottom - this.options.diffTop + window.pageYOffset - this.toolbar.offsetHeight + 'px';
            } else {
                this.toolbar.classList.add('inline-toolbar-arrow-under');
                this.toolbar.classList.remove('inline-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';
            }
            return this;
        },

        setToolbarButtonStates: function () {
            var buttons = this.toolbarActions.querySelectorAll('button'),
                i;
            for (i = 0; i < buttons.length; i += 1) {
                buttons[i].classList.remove('inline-editor-button-active');
            }
            this.checkActiveButtons();
            return this;
        },

        checkActiveButtons: function () {
            var parentNode = this.selection.anchorNode;
            if (!parentNode.tagName) {
                parentNode = this.selection.anchorNode.parentNode;
            }
            while (parentNode.tagName !== undefined && this.parentElements.indexOf(parentNode.tagName) === -1) {
                this.activateButton(parentNode.tagName.toLowerCase());
                parentNode = parentNode.parentNode;
            }
        },

        activateButton: function (tag) {
            var el = this.toolbar.querySelector('[data-element="' + tag + '"]');
            if (el !== null && el.className.indexOf('inline-editor-button-active') === -1) {
                el.className += ' inline-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('inline-editor-button-active') > -1) {
                        this.classList.remove('inline-editor-button-active');
                    } else {
                        this.className += ' inline-editor-button-active';
                    }
                    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) {
            buttons[0].className += ' inline-editor-button-first';
            buttons[buttons.length - 1].className += ' inline-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 {
                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';
            }
            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;
        },

        bindElementToolbarEvents: function (el) {
            var self = this;
            el.addEventListener('mouseup', function (e) {
                self.checkSelection();
            });
            el.addEventListener('keyup', function (e) {
                self.checkSelection();
            });
        },

        hideToolbarActions: function () {
            this.keepToolbarAlive = false;
            this.toolbar.classList.remove('inline-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.classList.contains('inline-editor-toolbar-active')) {
                    self.toolbar.classList.add('inline-editor-toolbar-active');
                }
            }, 100);
        },

        showAnchorForm: function () {
            this.toolbarActions.style.display = 'none';
            this.savedSelection = saveSelection();
            this.anchorForm.style.display = 'block';
            this.keepToolbarAlive = true;
            this.anchorInput.focus();
            this.anchorInput.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('blur', function (e) {
                self.keepToolbarAlive = false;
                self.checkSelection();
            });
            linkCancel.addEventListener('click', function (e) {
                e.preventDefault();
                self.showToolbarActions();
                restoreSelection(self.savedSelection);
            });
            return this;
        },

        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);
            document.execCommand('createLink', false, input.value);
            if (this.options.targetBlank) {
                this.setTargetBlank();
            }
            this.showToolbarActions();
            input.value = '';
        },

        bindWindowActions: function () {
            var timerResize,
                self = this;
            window.addEventListener('resize', function () {
                clearTimeout(timerResize);
                timerResize = setTimeout(function () {
                    if (self.toolbar.classList.contains('inline-editor-toolbar-active')) {
                        self.setToolbarPosition();
                    }
                }, 100);
            });
            return this;
        },

        activate: function () {
            var i;
            if (this.isActive) {
                return;
            }

            if (this.toolbar !== undefined) {
                this.toolbar.style.display = 'block';
            }

            this.isActive = true;
            for (i = 0; i < this.elements.length; i += 1) {
                this.elements[i].setAttribute('contentEditable', true);
            }
            this.bindSelect();
        },

        deactivate: function () {
            var i;
            if (!this.isActive) {
                return;
            }
            this.isActive = false;

            if (this.toolbar !== undefined) {
                this.toolbar.style.display = 'none';
            }

            document.documentElement.removeEventListener('mouseup', this.checkSelectionWrapper);

            for (i = 0; i < this.elements.length; i += 1) {
                this.elements[i].removeEventListener('keyup', this.checkSelectionWrapper);
                this.elements[i].removeEventListener('blur', this.checkSelectionWrapper);
                this.elements[i].removeAttribute('contentEditable');
            }
        },

        bindPaste: function () {
            if (!this.options.forcePlainText) {
                return this;
            }
            var i,
                self = this,
                pasteWrapper = function (e) {
                    var paragraphs,
                        html = '',
                        p;
                    this.classList.remove('inline-editor-placeholder');
                    if (e.clipboardData && e.clipboardData.getData) {
                        e.preventDefault();
                        if (!self.options.disableReturn) {
                            paragraphs = e.clipboardData.getData('text/plain').split(/[\r\n]/g);
                            for (p = 0; p < paragraphs.length; p += 1) {
                                if (paragraphs[p] !== '') {
                                    html += '<p>' + paragraphs[p] + '</p>';
                                }
                            }
                            document.execCommand('insertHTML', false, html);
                        } else {
                            document.execCommand('insertHTML', false, e.clipboardData.getData('text/plain'));
                        }
                    }
                };
            for (i = 0; i < this.elements.length; i += 1) {
                this.elements[i].addEventListener('paste', pasteWrapper);
            }
            return this;
        },

        setPlaceholders: function () {
            var i,
                activatePlaceholder = function (el) {
                    if (el.textContent.replace(/^\s+|\s+$/g, '') === '') {
                        el.classList.add('inline-editor-placeholder');
                    }
                },
                placeholderWrapper = function (e) {
                    this.classList.remove('inline-editor-placeholder');
                    if (e.type !== 'keypress') {
                        activatePlaceholder(this);
                    }
                };
            for (i = 0; i < this.elements.length; i += 1) {
                activatePlaceholder(this.elements[i]);
                this.elements[i].addEventListener('blur', placeholderWrapper);
                this.elements[i].addEventListener('keypress', placeholderWrapper);
            }
            return this;
        }

    };

}(window, document));