medium-editor/src/js/extensions/fontname.js

Medium.com WYSIWYG editor clone.

(function () {
    'use strict';

    var FontNameForm = MediumEditor.extensions.form.extend({

        name: 'fontname',
        action: 'fontName',
        aria: 'change font name',
        contentDefault: '±', // ±
        contentFA: '<i class="fa fa-font"></i>',

        fonts: ['', 'Arial', 'Verdana', 'Times New Roman'],

        init: function () {
            MediumEditor.extensions.form.prototype.init.apply(this, arguments);
        },

        // Called when the button the toolbar is clicked
        // Overrides ButtonExtension.handleClick
        handleClick: function (event) {
            event.preventDefault();
            event.stopPropagation();

            if (!this.isDisplayed()) {
                // Get FontName of current selection (convert to string since IE returns this as number)
                var fontName = this.document.queryCommandValue('fontName') + '';
                this.showForm(fontName);
            }

            return false;
        },

        // Called by medium-editor to append form to the toolbar
        getForm: function () {
            if (!this.form) {
                this.form = this.createForm();
            }
            return this.form;
        },

        // Used by medium-editor when the default toolbar is to be displayed
        isDisplayed: function () {
            return this.getForm().style.display === 'block';
        },

        hideForm: function () {
            this.getForm().style.display = 'none';
            this.getSelect().value = '';
        },

        showForm: function (fontName) {
            var select = this.getSelect();

            this.base.saveSelection();
            this.hideToolbarDefaultActions();
            this.getForm().style.display = 'block';
            this.setToolbarPosition();

            select.value = fontName || '';
            select.focus();
        },

        // Called by core when tearing down medium-editor (destroy)
        destroy: function () {
            if (!this.form) {
                return false;
            }

            if (this.form.parentNode) {
                this.form.parentNode.removeChild(this.form);
            }

            delete this.form;
        },

        // core methods

        doFormSave: function () {
            this.base.restoreSelection();
            this.base.checkSelection();
        },

        doFormCancel: function () {
            this.base.restoreSelection();
            this.clearFontName();
            this.base.checkSelection();
        },

        // form creation and event handling
        createForm: function () {
            var doc = this.document,
                form = doc.createElement('div'),
                select = doc.createElement('select'),
                close = doc.createElement('a'),
                save = doc.createElement('a'),
                option;

            // Font Name Form (div)
            form.className = 'medium-editor-toolbar-form';
            form.id = 'medium-editor-toolbar-form-fontname-' + this.getEditorId();

            // Handle clicks on the form itself
            this.on(form, 'click', this.handleFormClick.bind(this));

            // Add font names
            for (var i = 0; i<this.fonts.length; i++) {
                option = doc.createElement('option');
                option.innerHTML = this.fonts[i];
                option.value = this.fonts[i];
                select.appendChild(option);
            }

            select.className = 'medium-editor-toolbar-select';
            form.appendChild(select);

            // Handle typing in the textbox
            this.on(select, 'change', this.handleFontChange.bind(this));

            // Add save buton
            save.setAttribute('href', '#');
            save.className = 'medium-editor-toobar-save';
            save.innerHTML = this.getEditorOption('buttonLabels') === 'fontawesome' ?
                             '<i class="fa fa-check"></i>' :
                             '&#10003;';
            form.appendChild(save);

            // Handle save button clicks (capture)
            this.on(save, 'click', this.handleSaveClick.bind(this), true);

            // Add close button
            close.setAttribute('href', '#');
            close.className = 'medium-editor-toobar-close';
            close.innerHTML = this.getEditorOption('buttonLabels') === 'fontawesome' ?
                              '<i class="fa fa-times"></i>' :
                              '&times;';
            form.appendChild(close);

            // Handle close button clicks
            this.on(close, 'click', this.handleCloseClick.bind(this));

            return form;
        },

        getSelect: function () {
            return this.getForm().querySelector('select.medium-editor-toolbar-select');
        },

        clearFontName: function () {
            MediumEditor.selection.getSelectedElements(this.document).forEach(function (el) {
                if (el.nodeName.toLowerCase() === 'font' && el.hasAttribute('face')) {
                    el.removeAttribute('face');
                }
            });
        },

        handleFontChange: function () {
            var font = this.getSelect().value;
            if (font === '') {
                this.clearFontName();
            } else {
                this.execAction('fontName', { value: font });
            }
        },

        handleFormClick: function (event) {
            // make sure not to hide form when clicking inside the form
            event.stopPropagation();
        },

        handleSaveClick: function (event) {
            // Clicking Save -> create the font size
            event.preventDefault();
            this.doFormSave();
        },

        handleCloseClick: function (event) {
            // Click Close -> close the form
            event.preventDefault();
            this.doFormCancel();
        }
    });

    MediumEditor.extensions.fontName = FontNameForm;
}());