/**
* Quirks.js
*
* Released under LGPL License.
* Copyright (c) 1999-2015 Ephox Corp. All rights reserved
*
* 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 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> [\\s\\r\\n]+|<br>)*(<\\/?(' + blockElements.join('|') + ')[^>]*>)(?:<br> [\\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 computed styles gets added to style attributes when copy/pasting contents.
* This fix solves that by simply removing the whole style attribute.
*
* The paste_webkit_styles option can be set to specify what to keep:
* paste_webkit_styles: "none" // Keep no styles
* paste_webkit_styles: "all", // Keep all of them
* paste_webkit_styles: "font-weight color" // Keep specific ones
*
* @param {String} content Content that needs to be processed.
* @return {String} Processed contents.
*/
function removeWebKitStyles(content) {
// Passthrough all styles from Word and let the WordFilter handle that junk
if (WordFilter.isWordContent(content)) {
return content;
}
// Filter away styles that isn't matching the target node
var webKitStyles = editor.settings.paste_webkit_styles;
if (editor.settings.paste_remove_styles_if_webkit === false || webKitStyles == "all") {
return content;
}
if (webKitStyles) {
webKitStyles = webKitStyles.split(/[, ]/);
}
// Keep specific styles that doesn't match the current node computed style
if (webKitStyles) {
var dom = editor.dom, node = editor.selection.getNode();
content = content.replace(/(<[^>]+) style="([^"]*)"([^>]*>)/gi, function(all, before, value, after) {
var inputStyles = dom.parseStyle(value, 'span'), outputStyles = {};
if (webKitStyles === "none") {
return before + after;
}
for (var i = 0; i < webKitStyles.length; i++) {
var inputValue = inputStyles[webKitStyles[i]], currentValue = dom.getStyle(node, webKitStyles[i], true);
if (/color/.test(webKitStyles[i])) {
inputValue = dom.toHex(inputValue);
currentValue = dom.toHex(currentValue);
}
if (currentValue != inputValue) {
outputStyles[webKitStyles[i]] = inputValue;
}
}
outputStyles = dom.serializeStyle(outputStyles, 'span');
if (outputStyles) {
return before + ' style="' + outputStyles + '"' + after;
}
return before + after;
});
} else {
// Remove all external styles
content = content.replace(/(<[^>]+) style="([^"]*)"([^>]*>)/gi, '$1$3');
}
// Keep internal styles
content = content.replace(/(<[^>]+) data-mce-style="([^"]+)"([^>]*>)/gi, function(all, before, value, after) {
return before + ' style="' + value + '"' + after;
});
return content;
}
// Sniff browsers and apply fixes since we can't feature detect
if (Env.webkit) {
addPreProcessFilter(removeWebKitStyles);
}
if (Env.ie) {
addPreProcessFilter(removeExplorerBrElementsAfterBlocks);
}
};
});
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