/**
* Preview.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
*/
/**
* Internal class for generating previews styles for formats.
*
* Example:
* Preview.getCssText(editor, 'bold');
*
* @private
* @class tinymce.fmt.Preview
*/
define("tinymce/fmt/Preview", [
"tinymce/util/Tools"
], function(Tools) {
var each = Tools.each;
function getCssText(editor, format) {
var name, previewElm, dom = editor.dom;
var previewCss = '', parentFontSize, previewStyles;
previewStyles = editor.settings.preview_styles;
// No preview forced
if (previewStyles === false) {
return '';
}
// Default preview
if (!previewStyles) {
previewStyles = 'font-family font-size font-weight font-style text-decoration ' +
'text-transform color background-color border border-radius outline text-shadow';
}
// Removes any variables since these can't be previewed
function removeVars(val) {
return val.replace(/%(\w+)/g, '');
}
// Create block/inline element to use for preview
if (typeof format == "string") {
format = editor.formatter.get(format);
if (!format) {
return;
}
format = format[0];
}
name = format.block || format.inline || 'span';
previewElm = dom.create(name);
// Add format styles to preview element
each(format.styles, function(value, name) {
value = removeVars(value);
if (value) {
dom.setStyle(previewElm, name, value);
}
});
// Add attributes to preview element
each(format.attributes, function(value, name) {
value = removeVars(value);
if (value) {
dom.setAttrib(previewElm, name, value);
}
});
// Add classes to preview element
each(format.classes, function(value) {
value = removeVars(value);
if (!dom.hasClass(previewElm, value)) {
dom.addClass(previewElm, value);
}
});
editor.fire('PreviewFormats');
// Add the previewElm outside the visual area
dom.setStyles(previewElm, {position: 'absolute', left: -0xFFFF});
editor.getBody().appendChild(previewElm);
// Get parent container font size so we can compute px values out of em/% for older IE:s
parentFontSize = dom.getStyle(editor.getBody(), 'fontSize', true);
parentFontSize = /px$/.test(parentFontSize) ? parseInt(parentFontSize, 10) : 0;
each(previewStyles.split(' '), function(name) {
var value = dom.getStyle(previewElm, name, true);
// If background is transparent then check if the body has a background color we can use
if (name == 'background-color' && /transparent|rgba\s*\([^)]+,\s*0\)/.test(value)) {
value = dom.getStyle(editor.getBody(), name, true);
// Ignore white since it's the default color, not the nicest fix
// TODO: Fix this by detecting runtime style
if (dom.toHex(value).toLowerCase() == '#ffffff') {
return;
}
}
if (name == 'color') {
// Ignore black since it's the default color, not the nicest fix
// TODO: Fix this by detecting runtime style
if (dom.toHex(value).toLowerCase() == '#000000') {
return;
}
}
// Old IE won't calculate the font size so we need to do that manually
if (name == 'font-size') {
if (/em|%$/.test(value)) {
if (parentFontSize === 0) {
return;
}
// Convert font size from em/% to px
value = parseFloat(value, 10) / (/%$/.test(value) ? 100 : 1);
value = (value * parentFontSize) + 'px';
}
}
if (name == "border" && value) {
previewCss += 'padding:0 2px;';
}
previewCss += name + ':' + value + ';';
});
editor.fire('AfterPreviewFormats');
//previewCss += 'line-height:normal';
dom.remove(previewElm);
return previewCss;
}
return {
getCssText: getCssText
};
});
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