use coffeescript

Author: gregwebs

jquery.uitablefilter.coffee

@@ -0,0 +1,84 @@
+###
+ * Copyright (c) 2008 Greg Weber greg at gregweber.info
+ * Dual licensed under the MIT and GPLv2 licenses just as jQuery is:
+ * http://jquery.org/license
+ *
+ * documentation at http://gregweber.info/projects/uitablefilter
+ *
+ * allows table rows to be filtered (made invisible)
+ * <code>
+ * t = $('table')
+ * $.uiTableFilter( t, phrase )
+ * </code>
+ * arguments:
+ *   jQuery object containing table rows
+ *   phrase to search for
+ *   optional arguments:
+ *     column to limit search too (the column title in the table header)
+ *     ifHidden - callback to execute if one or more elements was hidden
+###
+(($) ->
+  $.uiTableFilter = (jq, phrase, column, ifHidden) ->
+    new_hidden = false;
+    return false if this.last_phrase == phrase
+
+    phrase_length = phrase.length
+    words = phrase.toLowerCase().split(" ")
+
+    noMatch = (elem) -> elem.hide(); new_hidden = true
+    # these function pointers may change
+    getText = (elem) -> elem.text()
+    matches = (elem) -> elem.show()
+
+    if column
+      index = null
+      jq.find("thead > tr:last > th").each( (i) ->
+        if $.trim($(this).text()) == column
+          index = i
+          return false
+      )
+      if index == null
+        throw("given column: " + column + " not found")
+
+      getText = (elem) -> $(elem.find( ("td:eq(" + index + ")") )).text()
+
+    # if added one letter to last time,
+    # just check newest word and only need to hide
+    if (words.size > 1) && (phrase.substr(0, phrase_length - 1) == this.last_phrase)
+      if phrase[-1] == " "
+        this.last_phrase = phrase
+        return false
+
+      words = words[-1] # just search for the newest word
+
+      # only hide visible rows
+      matches = (elem) ->
+      elems = jq.find("tbody:first > tr:visible")
+    else
+      new_hidden = true
+      elems = jq.find("tbody:first > tr")
+
+    elems.each(->
+      elem = $(this)
+      if $.uiTableFilter.has_words( getText(elem), words, false )
+        matches(elem)
+      else
+        noMatch(elem)
+    )
+
+    last_phrase = phrase
+    ifHidden() if ifHidden && new_hidden
+    return jq
+
+  # caching for speedup
+  $.uiTableFilter.last_phrase = ""
+
+  # not jQuery dependent
+  # "" [""] -> Boolean
+  # "" [""] Boolean -> Boolean
+  $.uiTableFilter.has_words = ( str, words, caseSensitive ) ->
+    text = caseSensitive ? str : str.toLowerCase()
+    for word in words
+      return false if text.indexOf(word) == -1
+    return true;
+)(jQuery)