307 lines
10 KiB
JavaScript
307 lines
10 KiB
JavaScript
/* @fileoverview
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* Provides full Bootstrap based, multi-instance WYSIWYG editor.
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*
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* "Name" = 'bootstrap-wysiwyg'
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* "Author" = 'Various, see LICENSE'
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* "Version" = '1.0.4'
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* "About" = 'A tiny Bootstrap and jQuery based WYSIWYG rich text editor based on the browser function execCommand.'
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*/
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(function ($) {
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'use strict';
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var readFileIntoDataUrl = function (fileInfo) {
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var loader = $.Deferred(),
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fReader = new FileReader();
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fReader.onload = function (e) {
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loader.resolve(e.target.result);
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};
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fReader.onerror = loader.reject;
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fReader.onprogress = loader.notify;
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fReader.readAsDataURL(fileInfo);
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return loader.promise();
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};
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$.fn.cleanHtml = function (o) {
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if ( $(this).data("wysiwyg-html-mode") === true ) {
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$(this).html($(this).text());
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$(this).attr('contenteditable',true);
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$(this).data('wysiwyg-html-mode',false);
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}
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// Strip the images with src="data:image/.." out;
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if ( o === true && $(this).parent().is("form") ) {
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var gGal = $(this).html;
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if ( $(gGal).has( "img" ).length ) {
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var gImages = $( "img", $(gGal));
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var gResults = [];
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var gEditor = $(this).parent();
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$.each(gImages, function(i,v) {
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if ( $(v).attr('src').match(/^data:image\/.*$/) ) {
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gResults.push(gImages[i]);
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$(gEditor).prepend("<input value='"+$(v).attr('src')+"' type='hidden' name='postedimage/"+i+"' />");
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$(v).attr('src', 'postedimage/'+i);
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}});
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}
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}
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var html = $(this).html();
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return html && html.replace(/(<br>|\s|<div><br><\/div>| )*$/, '');
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};
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$.fn.wysiwyg = function (userOptions) {
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var editor = this,
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selectedRange,
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options,
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toolbarBtnSelector,
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updateToolbar = function () {
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if (options.activeToolbarClass) {
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$(options.toolbarSelector).find(toolbarBtnSelector).each(function () {
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var commandArr = $(this).data(options.commandRole).split(' '),
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command = commandArr[0];
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// If the command has an argument and its value matches this button. == used for string/number comparison
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if (commandArr.length > 1 && document.queryCommandEnabled(command) && document.queryCommandValue(command) === commandArr[1]) {
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$(this).addClass(options.activeToolbarClass);
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// Else if the command has no arguments and it is active
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} else if (commandArr.length === 1 && document.queryCommandEnabled(command) && document.queryCommandState(command)) {
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$(this).addClass(options.activeToolbarClass);
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// Else the command is not active
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} else {
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$(this).removeClass(options.activeToolbarClass);
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}
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});
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}
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},
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execCommand = function (commandWithArgs, valueArg) {
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var commandArr = commandWithArgs.split(' '),
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command = commandArr.shift(),
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args = commandArr.join(' ') + (valueArg || '');
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var parts = commandWithArgs.split('-');
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if ( parts.length === 1 ) {
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document.execCommand(command, false, args);
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}
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else if ( parts[0] === 'format' && parts.length === 2 ) {
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document.execCommand('formatBlock', false, parts[1] );
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}
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editor.trigger('change');
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updateToolbar();
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},
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bindHotkeys = function (hotKeys) {
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$.each(hotKeys, function (hotkey, command) {
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editor.keydown(hotkey, function (e) {
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if (editor.attr('contenteditable') && editor.is(':visible')) {
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e.preventDefault();
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e.stopPropagation();
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execCommand(command);
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}
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}).keyup(hotkey, function (e) {
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if (editor.attr('contenteditable') && editor.is(':visible')) {
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e.preventDefault();
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e.stopPropagation();
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}
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});
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});
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editor.keyup(function(){ editor.trigger('change'); });
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},
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getCurrentRange = function () {
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var sel, range;
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if (window.getSelection) {
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sel = window.getSelection();
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if (sel.getRangeAt && sel.rangeCount) {
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range = sel.getRangeAt(0);
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}
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} else if (document.selection) {
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range = document.selection.createRange();
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} return range;
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},
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saveSelection = function () {
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selectedRange = getCurrentRange();
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},
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restoreSelection = function () {
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var selection;
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if (window.getSelection || document.createRange) {
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selection = window.getSelection();
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if (selectedRange) {
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try {
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selection.removeAllRanges();
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} catch (ex) {
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document.body.createTextRange().select();
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document.selection.empty();
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}
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selection.addRange(selectedRange);
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}
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}
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else if (document.selection && selectedRange) {
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selectedRange.select();
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}
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},
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// Adding Toggle HTML based on the work by @jd0000, but cleaned up a little to work in this context.
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toggleHtmlEdit = function() {
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if ( $(editor).data("wysiwyg-html-mode") !== true ) {
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var oContent = $(editor).html();
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var editorPre = $( "<pre />" );
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$(editorPre).append( document.createTextNode( oContent ) );
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$(editorPre).attr('contenteditable',true);
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$(editor).html(' ');
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$(editor).append($(editorPre));
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$(editor).attr('contenteditable', false);
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$(editor).data("wysiwyg-html-mode", true);
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$(editorPre).focus();
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}
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else {
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$(editor).html($(editor).text());
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$(editor).attr('contenteditable',true);
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$(editor).data('wysiwyg-html-mode',false);
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$(editor).focus();
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}
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},
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insertFiles = function (files) {
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editor.focus();
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$.each(files, function (idx, fileInfo) {
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if (/^image\//.test(fileInfo.type)) {
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$.when(readFileIntoDataUrl(fileInfo)).done(function (dataUrl) {
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execCommand('insertimage', dataUrl);
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editor.trigger('image-inserted');
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}).fail(function (e) {
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options.fileUploadError("file-reader", e);
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});
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} else {
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options.fileUploadError("unsupported-file-type", fileInfo.type);
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}
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});
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},
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markSelection = function (input, color) {
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restoreSelection();
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if (document.queryCommandSupported('hiliteColor')) {
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document.execCommand('hiliteColor', false, color || 'transparent');
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}
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saveSelection();
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input.data(options.selectionMarker, color);
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},
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bindToolbar = function (toolbar, options) {
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toolbar.find(toolbarBtnSelector).click(function () {
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restoreSelection();
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editor.focus();
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if ($(this).data(options.commandRole) === 'html') {
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toggleHtmlEdit();
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}
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else {
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execCommand($(this).data(options.commandRole));
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}
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saveSelection();
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});
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toolbar.find('[data-toggle=dropdown]').click(restoreSelection);
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toolbar.find('input[type=text][data-' + options.commandRole + ']').on('webkitspeechchange change', function () {
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var newValue = this.value; /* ugly but prevents fake double-calls due to selection restoration */
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this.value = '';
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restoreSelection();
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if (newValue) {
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editor.focus();
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execCommand($(this).data(options.commandRole), newValue);
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}
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saveSelection();
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}).on('focus', function () {
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var input = $(this);
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if (!input.data(options.selectionMarker)) {
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markSelection(input, options.selectionColor);
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input.focus();
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}
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}).on('blur', function () {
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var input = $(this);
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if (input.data(options.selectionMarker)) {
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markSelection(input, false);
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}
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});
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toolbar.find('input[type=file][data-' + options.commandRole + ']').change(function () {
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restoreSelection();
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if (this.type === 'file' && this.files && this.files.length > 0) {
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insertFiles(this.files);
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}
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saveSelection();
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this.value = '';
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});
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},
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initFileDrops = function () {
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editor.on('dragenter dragover', false)
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.on('drop', function (e) {
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var dataTransfer = e.originalEvent.dataTransfer;
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e.stopPropagation();
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e.preventDefault();
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if (dataTransfer && dataTransfer.files && dataTransfer.files.length > 0) {
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insertFiles(dataTransfer.files);
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}
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});
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};
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options = $.extend(true, {}, $.fn.wysiwyg.defaults, userOptions);
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toolbarBtnSelector = 'a[data-' + options.commandRole + '],button[data-' + options.commandRole + '],input[type=button][data-' + options.commandRole + ']';
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bindHotkeys(options.hotKeys);
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// Support placeholder attribute on the DIV
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if ($(this).attr('placeholder') !== '') {
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$(this).addClass('placeholderText');
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$(this).html($(this).attr('placeholder'));
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$(this).bind('focus',function() {
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if ( $(this).attr('placeholder') !== '' && $(this).text() === $(this).attr('placeholder') ) {
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$(this).removeClass('placeholderText');
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$(this).html('');
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}
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});
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$(this).bind('blur',function() {
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if ( $(this).attr('placeholder') !== '' && $(this).text() === '' ) {
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$(this).addClass('placeholderText');
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$(this).html($(this).attr('placeholder'));
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}
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});
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}
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if (options.dragAndDropImages) {
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initFileDrops();
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}
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bindToolbar($(options.toolbarSelector), options);
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editor.attr('contenteditable', true)
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.on('mouseup keyup mouseout', function () {
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saveSelection();
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updateToolbar();
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});
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$(window).bind('touchend', function (e) {
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var isInside = (editor.is(e.target) || editor.has(e.target).length > 0),
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currentRange = getCurrentRange(),
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clear = currentRange && (currentRange.startContainer === currentRange.endContainer && currentRange.startOffset === currentRange.endOffset);
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if (!clear || isInside) {
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saveSelection();
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updateToolbar();
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}
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});
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return this;
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};
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$.fn.wysiwyg.defaults = {
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hotKeys: {
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'Ctrl+b meta+b': 'bold',
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'Ctrl+i meta+i': 'italic',
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'Ctrl+u meta+u': 'underline',
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'Ctrl+z': 'undo',
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'Ctrl+y meta+y meta+shift+z': 'redo',
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'Ctrl+l meta+l': 'justifyleft',
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'Ctrl+r meta+r': 'justifyright',
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'Ctrl+e meta+e': 'justifycenter',
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'Ctrl+j meta+j': 'justifyfull',
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'Shift+tab': 'outdent',
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'tab': 'indent'
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},
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toolbarSelector: '[data-role=editor-toolbar]',
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commandRole: 'edit',
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activeToolbarClass: 'btn-info',
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selectionMarker: 'edit-focus-marker',
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selectionColor: 'darkgrey',
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dragAndDropImages: true,
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keypressTimeout: 200,
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fileUploadError: function (reason, detail) { console.log("File upload error", reason, detail); }
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};
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}(window.jQuery));
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