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Add truncation plugin to apply to html+text desc blocks [ref #6685]
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| (function($) { | ||
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| // Matches trailing non-space characters. | ||
| var chop = /(\s*\S+|\s)$/; | ||
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| // Matches the first word in the string. | ||
| var start = /^(\S*)/; | ||
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| // Return a truncated html string. Delegates to $.fn.truncate. | ||
| $.truncate = function(html, options) { | ||
| return $('<div></div>').append(html).truncate(options).html(); | ||
| }; | ||
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| // Truncate the contents of an element in place. | ||
| $.fn.truncate = function(options) { | ||
| if ($.isNumeric(options)) options = {length: options}; | ||
| var o = $.extend({}, $.truncate.defaults, options); | ||
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| return this.each(function() { | ||
| var self = $(this); | ||
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| if (o.noBreaks) self.find('br').replaceWith(' '); | ||
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| var text = self.text(); | ||
| var excess = text.length - o.length; | ||
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| if (o.stripTags) self.text(text); | ||
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| // Chop off any partial words if appropriate. | ||
| if (o.words && excess > 0) { | ||
| var truncated = text.slice(0, o.length).replace(chop, '').length; | ||
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| if (o.keepFirstWord && truncated === 0) { | ||
| excess = text.length - start.exec(text)[0].length - 1; | ||
| } else { | ||
| excess = text.length - truncated - 1; | ||
| } | ||
| } | ||
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| if (excess < 0 || !excess && !o.truncated) return; | ||
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| // Iterate over each child node in reverse, removing excess text. | ||
| $.each(self.contents().get().reverse(), function(i, el) { | ||
| var $el = $(el); | ||
| var text = $el.text(); | ||
| var length = text.length; | ||
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| // If the text is longer than the excess, remove the node and continue. | ||
| if (length <= excess) { | ||
| o.truncated = true; | ||
| excess -= length; | ||
| $el.remove(); | ||
| return; | ||
| } | ||
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| // Remove the excess text and append the ellipsis. | ||
| if (el.nodeType === 3) { | ||
| // should we finish the block anyway? | ||
| if (o.finishBlock) { | ||
| $(el.splitText(length)).replaceWith(o.ellipsis); | ||
| } else { | ||
| $(el.splitText(length - excess - 1)).replaceWith(o.ellipsis); | ||
| } | ||
| return false; | ||
| } | ||
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| // Recursively truncate child nodes. | ||
| $el.truncate($.extend(o, {length: length - excess})); | ||
| return false; | ||
| }); | ||
| }); | ||
| }; | ||
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| $.truncate.defaults = { | ||
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| // Strip all html elements, leaving only plain text. | ||
| stripTags: false, | ||
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| // Only truncate at word boundaries. | ||
| words: false, | ||
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| // When 'words' is active, keeps the first word in the string | ||
| // even if it's longer than a target length. | ||
| keepFirstWord: false, | ||
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| // Replace instances of <br> with a single space. | ||
| noBreaks: false, | ||
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| // if true always truncate the content at the end of the block. | ||
| finishBlock: false, | ||
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| // The maximum length of the truncated html. | ||
| length: Infinity, | ||
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| // The character to use as the ellipsis. The word joiner (U+2060) can be | ||
| // used to prevent a hanging ellipsis, but displays incorrectly in Chrome | ||
| // on Windows 7. | ||
| // http://code.google.com/p/chromium/issues/detail?id=68323 | ||
| ellipsis: '\u2026' // '\u2060\u2026' | ||
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| }; | ||
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| })(jQuery); |