add setShowDnsFields, adds edge case force hide ip fields

WiFiManager.cpp

@@ -950,7 +950,7 @@ String WiFiManager::getIpForm(String id, String title, String value){
 
 String WiFiManager::getStaticOut(){
   String page;
-  if (_staShowStaticFields || _sta_static_ip) {
+  if ((_staShowStaticFields || _sta_static_ip) && _staShowStaticFields>=0) {
     page += FPSTR(HTTP_FORM_STATIC_HEAD);
     // @todo how can we get these accurate settings from memory , wifi_get_ip_info does not seem to reveal if struct ip_info is static or not
     page += getIpForm(FPSTR(S_ip),FPSTR(S_staticip),(_sta_static_ip ? _sta_static_ip.toString() : "")); // @token staticip
@@ -959,8 +959,10 @@ String WiFiManager::getStaticOut(){
     // WiFi.gatewayIP().toString();
     page += getIpForm(FPSTR(S_sn),FPSTR(S_subnet),(_sta_static_sn ? _sta_static_sn.toString() : "")); // @token subnet
     // WiFi.subnetMask().toString();
+  }
+
+  if((_staShowDns || _sta_static_dns) && _staShowDns>=0){
     page += getIpForm(FPSTR(S_dns),FPSTR(S_staticdns),(_sta_static_dns ? _sta_static_dns.toString() : "")); // @token dns
-    page += FPSTR(HTTP_BR); // @todo remove these, use css
   }
   return page;
 }
@@ -1782,7 +1784,20 @@ void WiFiManager::setRestorePersistent(boolean persistent) {
  * @param boolean alwaysShow [false]
  */
 void WiFiManager::setShowStaticFields(boolean alwaysShow){
-  _staShowStaticFields = alwaysShow;
+  if(_disableIpFields) _staShowStaticFields = alwaysShow ? 1 : -1;
+  else _staShowStaticFields = alwaysShow ? 1 : 0;
+}
+
+/**
+ * toggle showing dns fields
+ * if enabled, then the dns1 field will be visible, even if not set in code
+ * @since $dev
+ * @access public
+ * @param boolean alwaysShow [false]
+ */
+void WiFiManager::setShowDnsFields(boolean alwaysShow){
+  if(_disableIpFields) _staShowDns = alwaysShow ? 1 : -1;
+  _staShowDns = alwaysShow ? 1 : 0;
 }
 
 /**

WiFiManager.h

@@ -200,8 +200,10 @@ class WiFiManager
     void          setRemoveDuplicateAPs(boolean removeDuplicates);
     //setter for ESP wifi.persistent so we can remember it and restore user preference, as WIFi._persistent is protected
     void          setRestorePersistent(boolean persistent);
-    //if true, always show static net inputs, IP, subnet, gateway, if false, only show when already set.
+    //if true, always show static net inputs, IP, subnet, gateway, else only show if set via setSTAStaticIPConfig
     void          setShowStaticFields(boolean alwaysShow);
+    //if true, always show static dns, esle only show if set via setSTAStaticIPConfig
+    void          setShowDnsFields(boolean alwaysShow);
     //if false, disable captive portal redirection
     void          setCaptivePortalEnable(boolean enabled);
     //if false, timeout captive portal even if a STA client connected (false), suggest disabling if captiveportal is open
@@ -286,13 +288,14 @@ class WiFiManager
     uint8_t WL_STATION_WRONG_PASSWORD     = 7; // @kludge define a WL status for wrong password
     #endif
 
-    // option parameters
+    // parameter options
     int           _minimumQuality         = -1;    // filter wifiscan ap by this rssi
+    int            _staShowStaticFields   = 0;     // ternary always show static ip fields, only if not set in code, never(cannot change ips via web!)
+    int            _staShowDns            = 0;     // ternary always show dns, only if not set in code, never(cannot change dns via web!)
     boolean       _removeDuplicateAPs     = true;  // remove dup aps from wifiscan
     boolean       _shouldBreakAfterConfig = false; // stop configportal on save failure
     boolean       _tryWPS                 = false; // try WPS on save failure, unsupported
     boolean       _configPortalIsBlocking = true;  // configportal enters blocking loop 
-    boolean       _staShowStaticFields    = false; // always show static ip fields, even if not set in code
     boolean       _enableCaptivePortal    = true;  // enable captive portal redirection
     boolean       _userpersistent         = true;  // users preffered persistence to restore
     boolean       _wifiAutoReconnect      = true;  // there is no platform getter for this, we must assume its true and make it so
@@ -300,11 +303,14 @@ class WiFiManager
     boolean       _webClientCheck         = true;  // keep cp alive if web have client
     boolean       _scanDispOptions        = false; // show percentage in scans not icons
     boolean       _paramsInWifi           = true;  // show custom parameters on wifi page
-    boolean       _preloadwifiscan        = true;  // preload wifiscan
     const char *  _hostname               = "";
 
     const char*   _customHeadElement      = ""; // store custom head element html from user
 
+    // internal options
+    boolean       _preloadwifiscan        = true;  // preload wifiscan if true
+    boolean       _disableIpFields        = false; // edge case, if true, showxFields(false) forces ip fields off instead of default show when set
+
     void          setupConfigPortal();
     void          startWPS();
     bool          startAP();