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public/tinymce/plugins/paste/backup/classes/Quirks.js

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+/**
+ * Quirks.js
+ *
+ * Copyright, Moxiecode Systems AB
+ * Released under LGPL License.
+ *
+ * License: http://www.tinymce.com/license
+ * Contributing: http://www.tinymce.com/contributing
+ */
+
+/**
+ * This class contains various fixes for browsers. These issues can not be feature
+ * detected since we have no direct control over the clipboard. However we might be able
+ * to remove some of these fixes once the browsers gets updated/fixed.
+ *
+ * @class tinymce.pasteplugin.Quirks
+ * @private
+ */
+define("tinymce/pasteplugin/Quirks", [
+	"tinymce/Env",
+	"tinymce/util/Tools",
+	"tinymce/pasteplugin/WordFilter",
+	"tinymce/pasteplugin/Utils"
+], function(Env, Tools, WordFilter, Utils) {
+	"use strict";
+
+	return function(editor) {
+		function addPreProcessFilter(filterFunc) {
+			editor.on('BeforePastePreProcess', function(e) {
+				e.content = filterFunc(e.content);
+			});
+		}
+
+		/**
+		 * Removes WebKit fragment comments and converted-space spans.
+		 *
+		 * This:
+		 *   <!--StartFragment-->a<span class="Apple-converted-space">&nbsp;</span>b<!--EndFragment-->
+		 *
+		 * Becomes:
+		 *   a&nbsp;b
+		 */
+		function removeWebKitFragments(html) {
+			html = Utils.filter(html, [
+				/^[\s\S]*<!--StartFragment-->|<!--EndFragment-->[\s\S]*$/g,        // WebKit fragment
+				[/<span class="Apple-converted-space">\u00a0<\/span>/g, '\u00a0'], // WebKit &nbsp;
+				/<br>$/															   // Traling BR elements
+			]);
+
+			return html;
+		}
+
+		/**
+		 * Removes BR elements after block elements. IE9 has a nasty bug where it puts a BR element after each
+		 * block element when pasting from word. This removes those elements.
+		 *
+		 * This:
+		 *  <p>a</p><br><p>b</p>
+		 *
+		 * Becomes:
+		 *  <p>a</p><p>b</p>
+		 */
+		function removeExplorerBrElementsAfterBlocks(html) {
+			// Only filter word specific content
+			if (!WordFilter.isWordContent(html)) {
+				return html;
+			}
+
+			// Produce block regexp based on the block elements in schema
+			var blockElements = [];
+
+			Tools.each(editor.schema.getBlockElements(), function(block, blockName) {
+				blockElements.push(blockName);
+			});
+
+			var explorerBlocksRegExp = new RegExp(
+				'(?:<br>&nbsp;[\\s\\r\\n]+|<br>)*(<\\/?(' + blockElements.join('|') + ')[^>]*>)(?:<br>&nbsp;[\\s\\r\\n]+|<br>)*',
+				'g'
+			);
+
+			// Remove BR:s from: <BLOCK>X</BLOCK><BR>
+			html = Utils.filter(html, [
+				[explorerBlocksRegExp, '$1']
+			]);
+
+			// IE9 also adds an extra BR element for each soft-linefeed and it also adds a BR for each word wrap break
+			html = Utils.filter(html, [
+				[/<br><br>/g, '<BR><BR>'], // Replace multiple BR elements with uppercase BR to keep them intact
+				[/<br>/g, ' '],            // Replace single br elements with space since they are word wrap BR:s
+				[/<BR><BR>/g, '<br>']      // Replace back the double brs but into a single BR
+			]);
+
+			return html;
+		}
+
+		/**
+		 * WebKit has a nasty bug where the all runtime styles gets added to style attributes when copy/pasting contents.
+		 * This fix solves that by simply removing the whole style attribute.
+		 *
+		 * Todo: This can be made smarter. Keeping styles that override existing ones etc.
+		 *
+		 * @param {String} content Content that needs to be processed.
+		 * @return {String} Processed contents.
+		 */
+		function removeWebKitStyles(content) {
+			if (editor.settings.paste_remove_styles || editor.settings.paste_remove_styles_if_webkit !== false) {
+				content = content.replace(/ style=\"[^\"]+\"/g, '');
+			}
+
+			return content;
+		}
+
+		// Sniff browsers and apply fixes since we can't feature detect
+		if (Env.webkit) {
+			addPreProcessFilter(removeWebKitStyles);
+			addPreProcessFilter(removeWebKitFragments);
+		}
+
+		if (Env.ie) {
+			addPreProcessFilter(removeExplorerBrElementsAfterBlocks);
+		}
+	};
+});