finalise the url pattern control

README.md

@@ -8,12 +8,18 @@ The rules table contains lines with the following parameters :
 - action : add, modify or delete a header field
 - header field name
 - header field value 
+- comment : a comment 
 - status : on if the modification is active , off otherwise 
 
-We can choose the urls on which the modifications applies by modifying the url pattern.
+We can choose the urls on which the modifications applies by modifying the url pattern. The url pattern must follow the syntaxe define by https://developer.chrome.com/extensions/match_patterns
 
 To save and apply the modification , you need to click on the save button
 
+It's possible to: 
+-  export the configuration in a file (json format)
+-  import the configuration from a file , it support the format of  the Modifyheaders plugin  
+
+
 The extension can be start and stop via the button on the top right.
 
 The code is opensource under Mozilla Public License 2.0 

background.js

@@ -4,7 +4,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. 
  *
  * @author didierfred@gmail.com
- * @version 0.1
+ * @version 0.2
  */
 
 
@@ -149,7 +149,7 @@ function notify(message)
 function addListener()
 	{
 	var target = config.target_page;
-	if ((target=="*")||(target=="")||(target==" "))target="<all_urls>";
+	if ((target=="*")||(target=="")||(target==" ")) target="<all_urls>";
 	
 	browser.webRequest.onBeforeSendHeaders.addListener(rewriteHeader,
                                           {urls: [target]},

popup/config.html

@@ -53,7 +53,7 @@ color: #008CBA;
 
 <td width="450">
    
-  Url Pattern* :  <input size="50" id="targetPage"  type="text" value=""></input> 
+  Url Pattern* :  <input size="50" id="targetPage"  type="text" value="">
 </td>
 
 <td width="270" align="right">

popup/config.js

@@ -5,7 +5,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. 
  *
  * @author didierfred@gmail.com
- * @version 0.1
+ * @version 0.2
  */
 
 
@@ -21,6 +21,7 @@ window.onload = function() {
 	document.getElementById('add_button').addEventListener('click',function (e) {appendLine("add","-","-","","off");});
 	document.getElementById('start_img').addEventListener('click',function (e) {start_modify();});
 	document.getElementById('targetPage').value=config.target_page;
+	document.getElementById('targetPage').addEventListener('keyup',function (e) {checkTargetPageField();});
 	started = localStorage.getItem("started");
 	if (started=="on") document.getElementById("start_img").src = "img/stop.png";	
 } ;
@@ -69,17 +70,24 @@ function create_configuration_data()
 	return JSON.stringify(to_export);
 }
 
+// check if url pattern is valid , if not ,  set the font color to red
+function checkTargetPageField()
+{
+if (isTargetValid(document.getElementById('targetPage').value)) document.getElementById('targetPage').style.color="black";
+else document.getElementById('targetPage').style.color="red";
+}
+
 // check if url pattern is valid
 function isTargetValid(target)
 	{
 		if (target=="") return true;
 		if (target==" ") return true;
 		if (target=="*") return true;
-		return target.match("(http|https):\/\/.[^\*]*\/");
+		return target.match("(http|https|[\*]):\/\/([\*][\.][^\*]*|[^\*]*|[\*])\/");
 	}
 
 
-function save_data () 
+function save_data() 
 	{
 	if (!isTargetValid(document.getElementById('targetPage').value))
 		{
@@ -143,6 +151,8 @@ function readSingleFile(e)
 			// check file format
 			if (config.format_version && config.target_page)
 				{
+				// if url pattern invalid , set to "" 
+				if (!isTargetValid(config.target_page)) config.target_page=""; 
 				// store the conf in the local storage 
 				localStorage.setItem("config",contents);
 				// load the new conf