FELIX-563 Apply patch supplied by Fredrik Kjellberg (Thanks)

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@683680 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/webconsole/src/main/resources/res/ui/shell.js b/webconsole/src/main/resources/res/ui/shell.js
new file mode 100644
index 0000000..a36257c
--- /dev/null
+++ b/webconsole/src/main/resources/res/ui/shell.js
@@ -0,0 +1,86 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+function executeCommand(command) {
+    var xmlhttp = getXmlHttp();
+    if (!xmlhttp) {
+        return;
+    }
+    
+    if (xmlhttp.readyState < 4) {
+        xmlhttp.abort();
+    }
+    
+    var url = document.location;
+    
+    xmlhttp.open("POST", url);
+    
+    // set If-Modified-Since way back in the past to prevent
+    // using any content from the cache
+    xmlhttp.setRequestHeader("If-Modified-Since", new Date(0));
+    xmlhttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
+    
+    xmlhttp.onreadystatechange = updateConsole;
+    
+    xmlhttp.send("command=" + encodeURIComponent(command));
+}
+
+function updateConsole() {
+    var xmlhttp = getXmlHttp();
+    if (!xmlhttp || xmlhttp.readyState != 4) {
+        return;
+    }
+    
+    var result = xmlhttp.responseText;
+    if (!result) {
+        return;
+    }
+
+    var console = document.getElementById("console");
+    
+    console.style.display = "";
+    console.innerHTML = console.innerHTML + result;
+    
+    var consoleframe = document.getElementById("consoleframe");
+    consoleframe.scrollTop = console.scrollHeight;
+
+    document.forms["shellCommandForm"].elements["command"].value = "";
+    
+    shellCommandFocus();
+}
+
+function clearConsole() {
+    var console = document.getElementById("console");
+
+    console.style.display = "none";
+    console.innerHTML = "";
+    
+    var consoleframe = document.getElementById("consoleframe");
+    consoleframe.scrollTop = 0;
+    
+    shellCommandFocus();
+}
+
+function shellCommandFocus() {
+    document.forms["shellCommandForm"].elements["command"].focus();
+}
+
+function runShellCommand() {
+    var command = document.forms["shellCommandForm"].elements["command"].value;
+    
+    executeCommand(command);
+}