fixed bug 149841 It should NOT be possible to open cert manager twice at the same time. r=kaie sr=alecf

security/manager/pki/resources/content/certManager.xul

@@ -33,6 +33,7 @@
 <!DOCTYPE window SYSTEM "chrome://pippki/locale/certManager.dtd">
 
 <window id="certmanager" 
+	windowtype="mozilla:certmanager"
 	xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul" 
         title="&certmgr.title;"
         onload="LoadCerts();">

security/manager/pki/resources/content/device_manager.xul

@@ -32,6 +32,7 @@
 ]>
 
 <window id="devicemanager"
+	windowtype="mozilla:devicemanager"
         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul" 
         title="&devmgr.title;"
         persist="screenX screenY width height"

security/manager/pki/resources/content/pref-security.js

@@ -35,12 +35,30 @@
 
 function openCertManager()
 {
-    window.open('chrome://pippki/content/certManager.xul',  "",
-                'chrome,width=500,height=400,resizable=yes,dialog=no');
+    //check for an existing certManager window and focus it; it's not application modal
+    const kWindowMediatorContractID = "@mozilla.org/appshell/window-mediator;1";
+    const kWindowMediatorIID = Components.interfaces.nsIWindowMediator;
+    const kWindowMediator = Components.classes[kWindowMediatorContractID].getService(kWindowMediatorIID);
+    var lastCertManager = kWindowMediator.getMostRecentWindow("mozilla:certmanager");
+    if (lastCertManager)
+      lastCertManager.focus();
+    else {
+      window.open('chrome://pippki/content/certManager.xul',  "",
+                  'chrome,width=500,height=400,resizable=yes,dialog=no');
+    }
 }
 
 function openDeviceManager()
 {
-    window.open('chrome://pippki/content/device_manager.xul',  "devmgr",
-                'chrome,width=540,height=360,resizable=yes');
+    //check for an existing deviceManger window and focus it; it's not application modal
+    const kWindowMediatorContractID = "@mozilla.org/appshell/window-mediator;1";
+    const kWindowMediatorIID = Components.interfaces.nsIWindowMediator;
+    const kWindowMediator = Components.classes[kWindowMediatorContractID].getService(kWindowMediatorIID);
+    var lastCertManager = kWindowMediator.getMostRecentWindow("mozilla:devicemanager");
+    if (lastCertManager)
+      lastCertManager.focus();
+    else {
+      window.open('chrome://pippki/content/device_manager.xul',  "devmgr",
+                  'chrome,width=540,height=360,resizable=yes');
+    }
 }