(re?)added missing fhemweb_readingsHistory.js

git-svn-id: svn://svn.code.sf.net/p/fhem/code/trunk@6088 2b470e98-0d58-463d-a4d8-8e2adae1ed80

fhem/MAINTAINER.txt

@@ -264,6 +264,7 @@ www/codemirror/*             betateilchen         http://forum.fhem.de Frontends
 www/gplot/*                  rudolfkoenig         http://forum.fhem.de Frontends
 www/images/*                 ulimaass             http://forum.fhem.de Frontends
 www/pgm2/dashboard/*         svenson08            http://forum.fhem.de Frontends
+www/pgm2/fhemweb_readingsHistory.js  justme1968   http://forum.fhem.de Frontends
 www/pgm2/*                   rudolfkoenig         http://forum.fhem.de Frontends
 www/jscolor/*                justme1968           http://forum.fhem.de Frontends
 www/frontend/*               johannnes            http://forum.fhem.de Frontends

fhem/www/pgm2/fhemweb_readingsHistory.js

@@ -0,0 +1,40 @@
+
+function
+FW_readingsHistoryUpdateLine(d){
+
+  var dd = d[0].split("-", 3);
+
+  if(dd.length != 2) 
+    return;
+
+  var clear = 0;
+  if( dd[1] == "clear" )
+    clear = 1;
+  else if( dd[1] != "history" ) 
+    return;
+
+  var name = dd[0] + "-history";
+
+  el = document.getElementById(name);
+
+  if( el ) {
+    var rows = el.getAttribute("rows");
+    var lines = el.innerHTML.split( "<br>", rows );
+
+    el.innerHTML = d[1] + "<br>";
+    for( i = 0; i <= rows-2; ++i ) 
+      {
+        if( !clear )
+          el.innerHTML += lines[i];
+
+        el.innerHTML += "<br>";
+      }
+  }
+
+
+}
+
+
+FW_widgets['readingsHistory'] = {
+  updateLine:FW_readingsHistoryUpdateLine
+};