[Astlinux-commits] SF.net SVN: astlinux:[5689] branches/1.0/package/webinterface/altweb

[<abe...@us...>]

Revision: 5689
          http://astlinux.svn.sourceforge.net/astlinux/?rev=5689&view=rev
Author:   abelbeck
Date:     2012-09-23 02:19:24 +0000 (Sun, 23 Sep 2012)
Log Message:
-----------
web interface, Edit tab, if unsaved edits exist a dialog will warn the user before leaving

Modified Paths:
--------------
    branches/1.0/package/webinterface/altweb/admin/edit.php

Added Paths:
-----------
    branches/1.0/package/webinterface/altweb/common/murmurhash3_gc.js

Modified: branches/1.0/package/webinterface/altweb/admin/edit.php
===================================================================
--- branches/1.0/package/webinterface/altweb/admin/edit.php	2012-09-21 03:04:04 UTC (rev 5688)
+++ branches/1.0/package/webinterface/altweb/admin/edit.php	2012-09-23 02:19:24 UTC (rev 5689)
@@ -341,6 +341,24 @@
   }
   putHtml("</center>");
 ?>
+  <script language="JavaScript" type="text/javascript" src="../common/murmurhash3_gc.js"></script>
+  <script language="JavaScript" type="text/javascript">
+  //<![CDATA[
+  var old_textHash;
+
+  function setOKexit() {
+    var cur_textHash = murmurhash3_32_gc(document.getElementById("ed").value, 6802145);
+    if (cur_textHash != old_textHash) {
+      return 'Unsaved changes will be lost. Really leave?';
+    }
+  }
+
+  function setOKhandler() {
+    old_textHash = murmurhash3_32_gc(document.getElementById("ed").value, 6802145);
+    window.onbeforeunload = setOKexit;
+  }
+  //]]>
+  </script>
   <center>
   <table class="layoutNOpad"><tr><td><center>
   <form method="post" action="<?php echo $myself;?>">
@@ -494,7 +512,7 @@
   </td></tr></table>
   <table width="100%" class="stdtable">
   <tr><td width="240" style="text-align: center;">
-  <input type="submit" class="formbtn" value="Save Changes" name="submit_save" />
+  <input type="submit" class="formbtn" value="Save Changes" name="submit_save" onclick="setOKhandler();" />
   <input type="hidden" value="<?php echo $openfile;?>" name="openfile" />
   </td><td class="dialogText" style="text-align: center;">
   <input type="submit" class="formbtn" value="Reload/Restart" name="submit_reload" />
@@ -518,7 +536,7 @@
     $rows = '30';
   }
   putHtml('<table class="stdtable"><tr><td>');
-  echo '<textarea name="edit_text" rows="'.$rows.'" cols="'.$cols.'" wrap="off" class="editText">';
+  echo '<textarea id="ed" name="edit_text" rows="'.$rows.'" cols="'.$cols.'" wrap="off" class="editText">';
   if ($openfile !== '') {
     if (($ph = @fopen($openfile, "rb")) !== FALSE) {
       while (! feof($ph)) {
@@ -533,8 +551,13 @@
   putHtml('</textarea>');
   putHtml('</td></tr></table>');
   putHtml('</form>');
-  putHtml("</center></td></tr></table>");
-  putHtml("</center>");
+  putHtml('</center></td></tr></table>');
+  putHtml('</center>');
+  putHtml('<script language="JavaScript" type="text/javascript">');
+  putHtml('//<![CDATA[');
+  putHtml('setOKhandler();');
+  putHtml('//]]>');
+  putHtml('</script>');
 } // End of HTTP GET
 require_once '../common/footer.php';
 

Added: branches/1.0/package/webinterface/altweb/common/murmurhash3_gc.js
===================================================================
--- branches/1.0/package/webinterface/altweb/common/murmurhash3_gc.js	                        (rev 0)
+++ branches/1.0/package/webinterface/altweb/common/murmurhash3_gc.js	2012-09-23 02:19:24 UTC (rev 5689)
@@ -0,0 +1,64 @@
+/**
+ * JS Implementation of MurmurHash3 (r136) (as of May 20, 2011)
+ * 
+ * @author <a href="mailto:gar...@gm...">Gary Court</a>
+ * @see http://github.com/garycourt/murmurhash-js
+ * @author <a href="mailto:aap...@gm...">Austin Appleby</a>
+ * @see http://sites.google.com/site/murmurhash/
+ * 
+ * @param {string} key ASCII only
+ * @param {number} seed Positive integer only
+ * @return {number} 32-bit positive integer hash 
+ */
+
+function murmurhash3_32_gc(key, seed) {
+	var remainder, bytes, h1, h1b, c1, c1b, c2, c2b, k1, i;
+	
+	remainder = key.length & 3; // key.length % 4
+	bytes = key.length - remainder;
+	h1 = seed;
+	c1 = 0xcc9e2d51;
+	c2 = 0x1b873593;
+	i = 0;
+	
+	while (i < bytes) {
+	  	k1 = 
+	  	  ((key.charCodeAt(i) & 0xff)) |
+	  	  ((key.charCodeAt(++i) & 0xff) << 8) |
+	  	  ((key.charCodeAt(++i) & 0xff) << 16) |
+	  	  ((key.charCodeAt(++i) & 0xff) << 24);
+		++i;
+		
+		k1 = ((((k1 & 0xffff) * c1) + ((((k1 >>> 16) * c1) & 0xffff) << 16))) & 0xffffffff;
+		k1 = (k1 << 15) | (k1 >>> 17);
+		k1 = ((((k1 & 0xffff) * c2) + ((((k1 >>> 16) * c2) & 0xffff) << 16))) & 0xffffffff;
+
+		h1 ^= k1;
+		h1 = (h1 << 13) | (h1 >>> 19);
+		h1b = ((((h1 & 0xffff) * 5) + ((((h1 >>> 16) * 5) & 0xffff) << 16))) & 0xffffffff;
+		h1 = (((h1b & 0xffff) + 0x6b64) + ((((h1b >>> 16) + 0xe654) & 0xffff) << 16));
+	}
+	
+	k1 = 0;
+	
+	switch (remainder) {
+		case 3: k1 ^= (key.charCodeAt(i + 2) & 0xff) << 16;
+		case 2: k1 ^= (key.charCodeAt(i + 1) & 0xff) << 8;
+		case 1: k1 ^= (key.charCodeAt(i) & 0xff);
+		
+		k1 = (((k1 & 0xffff) * c1) + ((((k1 >>> 16) * c1) & 0xffff) << 16)) & 0xffffffff;
+		k1 = (k1 << 15) | (k1 >>> 17);
+		k1 = (((k1 & 0xffff) * c2) + ((((k1 >>> 16) * c2) & 0xffff) << 16)) & 0xffffffff;
+		h1 ^= k1;
+	}
+	
+	h1 ^= key.length;
+
+	h1 ^= h1 >>> 16;
+	h1 = (((h1 & 0xffff) * 0x85ebca6b) + ((((h1 >>> 16) * 0x85ebca6b) & 0xffff) << 16)) & 0xffffffff;
+	h1 ^= h1 >>> 13;
+	h1 = ((((h1 & 0xffff) * 0xc2b2ae35) + ((((h1 >>> 16) * 0xc2b2ae35) & 0xffff) << 16))) & 0xffffffff;
+	h1 ^= h1 >>> 16;
+
+	return h1 >>> 0;
+}

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