/* @fileoverview * Provides full Bootstrap based, multi-instance WYSIWYG editor. * * "Name" = 'bootstrap-wysiwyg' * "Author" = 'Various, see LICENSE' * "Version" = '1.0.4' * "About" = 'A tiny Bootstrap and jQuery based WYSIWYG rich text editor based on the browser function execCommand.' */ (function ($) { 'use strict'; var readFileIntoDataUrl = function (fileInfo) { var loader = $.Deferred(), fReader = new FileReader(); fReader.onload = function (e) { loader.resolve(e.target.result); }; fReader.onerror = loader.reject; fReader.onprogress = loader.notify; fReader.readAsDataURL(fileInfo); return loader.promise(); }; $.fn.cleanHtml = function (o) { if ( $(this).data("wysiwyg-html-mode") === true ) { $(this).html($(this).text()); $(this).attr('contenteditable',true); $(this).data('wysiwyg-html-mode',false); } // Strip the images with src="data:image/.." out; if ( o === true && $(this).parent().is("form") ) { var gGal = $(this).html; if ( $(gGal).has( "img" ).length ) { var gImages = $( "img", $(gGal)); var gResults = []; var gEditor = $(this).parent(); $.each(gImages, function(i,v) { if ( $(v).attr('src').match(/^data:image\/.*$/) ) { gResults.push(gImages[i]); $(gEditor).prepend(""); $(v).attr('src', 'postedimage/'+i); }}); } } var html = $(this).html(); return html && html.replace(/(
|\s|

<\/div>| )*$/, ''); }; $.fn.wysiwyg = function (userOptions) { var editor = this, selectedRange, options, toolbarBtnSelector, updateToolbar = function () { if (options.activeToolbarClass) { $(options.toolbarSelector).find(toolbarBtnSelector).each(function () { var commandArr = $(this).data(options.commandRole).split(' '), command = commandArr[0]; // If the command has an argument and its value matches this button. == used for string/number comparison if (commandArr.length > 1 && document.queryCommandEnabled(command) && document.queryCommandValue(command) === commandArr[1]) { $(this).addClass(options.activeToolbarClass); // Else if the command has no arguments and it is active } else if (commandArr.length === 1 && document.queryCommandEnabled(command) && document.queryCommandState(command)) { $(this).addClass(options.activeToolbarClass); // Else the command is not active } else { $(this).removeClass(options.activeToolbarClass); } }); } }, execCommand = function (commandWithArgs, valueArg) { var commandArr = commandWithArgs.split(' '), command = commandArr.shift(), args = commandArr.join(' ') + (valueArg || ''); var parts = commandWithArgs.split('-'); if ( parts.length === 1 ) { document.execCommand(command, false, args); } else if ( parts[0] === 'format' && parts.length === 2 ) { document.execCommand('formatBlock', false, parts[1] ); } editor.trigger('change'); updateToolbar(); }, bindHotkeys = function (hotKeys) { $.each(hotKeys, function (hotkey, command) { editor.keydown(hotkey, function (e) { if (editor.attr('contenteditable') && editor.is(':visible')) { e.preventDefault(); e.stopPropagation(); execCommand(command); } }).keyup(hotkey, function (e) { if (editor.attr('contenteditable') && editor.is(':visible')) { e.preventDefault(); e.stopPropagation(); } }); }); editor.keyup(function(){ editor.trigger('change'); }); }, getCurrentRange = function () { var sel, range; if (window.getSelection) { sel = window.getSelection(); if (sel.getRangeAt && sel.rangeCount) { range = sel.getRangeAt(0); } } else if (document.selection) { range = document.selection.createRange(); } return range; }, saveSelection = function () { selectedRange = getCurrentRange(); }, restoreSelection = function () { var selection; if (window.getSelection || document.createRange) { selection = window.getSelection(); if (selectedRange) { try { selection.removeAllRanges(); } catch (ex) { document.body.createTextRange().select(); document.selection.empty(); } selection.addRange(selectedRange); } } else if (document.selection && selectedRange) { selectedRange.select(); } }, // Adding Toggle HTML based on the work by @jd0000, but cleaned up a little to work in this context. toggleHtmlEdit = function() { if ( $(editor).data("wysiwyg-html-mode") !== true ) { var oContent = $(editor).html(); var editorPre = $( "
" );
                	$(editorPre).append( document.createTextNode( oContent ) );
                	$(editorPre).attr('contenteditable',true);
                	$(editor).html(' ');
                	$(editor).append($(editorPre));
                    $(editor).attr('contenteditable', false);
                    $(editor).data("wysiwyg-html-mode", true);
                    $(editorPre).focus();
                }
                else {
                	$(editor).html($(editor).text());
                	$(editor).attr('contenteditable',true);
                	$(editor).data('wysiwyg-html-mode',false);
                    $(editor).focus();
                }
            },

			insertFiles = function (files) {
				editor.focus();
				$.each(files, function (idx, fileInfo) {
					if (/^image\//.test(fileInfo.type)) {
						$.when(readFileIntoDataUrl(fileInfo)).done(function (dataUrl) {
							execCommand('insertimage', dataUrl);
							editor.trigger('image-inserted');
						}).fail(function (e) {
							options.fileUploadError("file-reader", e);
						});
					} else {
						options.fileUploadError("unsupported-file-type", fileInfo.type);
					}
				});
			},
			markSelection = function (input, color) {
				restoreSelection();
				if (document.queryCommandSupported('hiliteColor')) {
					document.execCommand('hiliteColor', false, color || 'transparent');
				}
				saveSelection();
				input.data(options.selectionMarker, color);
			},
			bindToolbar = function (toolbar, options) {
				toolbar.find(toolbarBtnSelector).click(function () {
					restoreSelection();
					editor.focus();

                    if ($(this).data(options.commandRole) === 'html') {
                        toggleHtmlEdit();
                    }
                    else {
                    	execCommand($(this).data(options.commandRole));
                    }
					saveSelection();
				});
				toolbar.find('[data-toggle=dropdown]').click(restoreSelection);

				toolbar.find('input[type=text][data-' + options.commandRole + ']').on('webkitspeechchange change', function () {
					var newValue = this.value; /* ugly but prevents fake double-calls due to selection restoration */
					this.value = '';
					restoreSelection();
					if (newValue) {
						editor.focus();
						execCommand($(this).data(options.commandRole), newValue);
					}
					saveSelection();
				}).on('focus', function () {
					var input = $(this);
					if (!input.data(options.selectionMarker)) {
						markSelection(input, options.selectionColor);
						input.focus();
					}
				}).on('blur', function () {
					var input = $(this);
					if (input.data(options.selectionMarker)) {
						markSelection(input, false);
					}
				});
				toolbar.find('input[type=file][data-' + options.commandRole + ']').change(function () {
					restoreSelection();
					if (this.type === 'file' && this.files && this.files.length > 0) {
						insertFiles(this.files);
					}
					saveSelection();
					this.value = '';
				});
			},
			initFileDrops = function () {
				editor.on('dragenter dragover', false)
					.on('drop', function (e) {
						var dataTransfer = e.originalEvent.dataTransfer;
						e.stopPropagation();
						e.preventDefault();
						if (dataTransfer && dataTransfer.files && dataTransfer.files.length > 0) {
							insertFiles(dataTransfer.files);
						}
					});
			};
		options = $.extend(true, {}, $.fn.wysiwyg.defaults, userOptions);
		toolbarBtnSelector = 'a[data-' + options.commandRole + '],button[data-' + options.commandRole + '],input[type=button][data-' + options.commandRole + ']';
		bindHotkeys(options.hotKeys);

		// Support placeholder attribute on the DIV
		var placeholder = $(this).attr('placeholder');

		if (placeholder !== '') {
			// Set iniitial state without trashing existing text.
			if ( placeholder !== '' && $(this).text() === '' ) {
				$(this).addClass('placeholderText');
				$(this).html(placeholder);
			}
			$(this).bind('focus',function() {
				if (placeholder !== '' && $(this).text() === placeholder ) {
					$(this).removeClass('placeholderText');
					$(this).html('');
				}
			});
			$(this).bind('blur',function() {
				if (placeholder !== '' && $(this).text() === '' ) {
					$(this).addClass('placeholderText');
					$(this).html(placeholder);
				}
			});
		}

		if (options.dragAndDropImages) {
			initFileDrops();
		}
		bindToolbar($(options.toolbarSelector), options);
		editor.attr('contenteditable', true)
			.on('mouseup keyup mouseout', function () {
				saveSelection();
				updateToolbar();
			});
		$(window).bind('touchend', function (e) {
			var isInside = (editor.is(e.target) || editor.has(e.target).length > 0),
				currentRange = getCurrentRange(),
				clear = currentRange && (currentRange.startContainer === currentRange.endContainer && currentRange.startOffset === currentRange.endOffset);
			if (!clear || isInside) {
				saveSelection();
				updateToolbar();
			}
		});
		return this;
	};
	$.fn.wysiwyg.defaults = {
		hotKeys: {
			'Ctrl+b meta+b': 'bold',
			'Ctrl+i meta+i': 'italic',
			'Ctrl+u meta+u': 'underline',
			'Ctrl+z': 'undo',
			'Ctrl+y meta+y meta+shift+z': 'redo',
			'Ctrl+l meta+l': 'justifyleft',
			'Ctrl+r meta+r': 'justifyright',
			'Ctrl+e meta+e': 'justifycenter',
			'Ctrl+j meta+j': 'justifyfull',
			'Shift+tab': 'outdent',
			'tab': 'indent'
		},
		toolbarSelector: '[data-role=editor-toolbar]',
		commandRole: 'edit',
		activeToolbarClass: 'btn-info',
		selectionMarker: 'edit-focus-marker',
		selectionColor: 'darkgrey',
		dragAndDropImages: true,
		keypressTimeout: 200,
		fileUploadError: function (reason, detail) { console.log("File upload error", reason, detail); }
	};
}(window.jQuery));