use callback in onModifyUrl to allow continuing

fixes infinite loop
fixes disableUpdate not working

fixes #208

app/src/main/java/com/trianguloy/urlchecker/dialogs/MainDialog.java

@@ -76,11 +76,8 @@ public class MainDialog extends Activity {
 
         // fire updates loop
         main_loop:
-        while (updating < MAX_UPDATES) {
-
-            // test and mark looping times
-            if (urlData.disableUpdates) updating = MAX_UPDATES;
-            else updating++;
+        while (true) {
+            updating++;
 
             // first notify modules
             for (var module : modules.keySet()) {
@@ -99,11 +96,23 @@ public class MainDialog extends Activity {
                 // skip own if required
                 if (!urlData.triggerOwn && module == urlData.trigger) continue;
                 try {
-                    var modifiedUrlData = module.onModifyUrl(urlData);
-                    if (modifiedUrlData != null) {
+                    var modifiedUrlData = new UrlData[]{null};
+                    module.onModifyUrl(urlData, newUrl -> {
+                        // callback to replace the url. Alternative to throwing an exception and catch it here.
+                        // can't use a return value directly because the caller needs to know if it should continue or not.
+                        if (!urlData.disableUpdates && updating < MAX_UPDATES) {
+                            // new url accepted
+                            modifiedUrlData[0] = newUrl;
+                            return true;
+                        } else {
+                            // a new url is not accepted
+                            return false;
+                        }
+                    });
+                    if (modifiedUrlData[0] != null) {
                         // modified, restart
-                        modifiedUrlData.mergeData(urlData);
-                        urlData = modifiedUrlData;
+                        modifiedUrlData[0].mergeData(urlData);
+                        urlData = modifiedUrlData[0];
                         continue main_loop;
                     }
                 } catch (Exception e) {

app/src/main/java/com/trianguloy/urlchecker/modules/AModuleDialog.java

@@ -5,6 +5,7 @@ import android.app.Activity;
 import com.trianguloy.urlchecker.dialogs.MainDialog;
 import com.trianguloy.urlchecker.fragments.Fragment;
 import com.trianguloy.urlchecker.url.UrlData;
+import com.trianguloy.urlchecker.utilities.JavaUtils;
 
 import java.util.Map;
 
@@ -33,10 +34,10 @@ public abstract class AModuleDialog implements Fragment {
 
     /**
      * Analyze and optionally modify an url. This may not be called for new modules.
-     * Return the new url if needed, null for no changes.
+     * To modify the url call the setNewUrl callback. It will return true iff you can stop processing changes (false if you need to continue).
+     * > if(setNewUrl.apply(new UrlData(""))) return;
      */
-    public UrlData onModifyUrl(UrlData urlData) {
-        return null;
+    public void onModifyUrl(UrlData urlData, JavaUtils.Function<UrlData, Boolean> setNewUrl) {
     }
 
     /**

app/src/main/java/com/trianguloy/urlchecker/modules/list/ClearUrlModule.java

@@ -16,6 +16,7 @@ import com.trianguloy.urlchecker.modules.companions.ClearUrlCatalog;
 import com.trianguloy.urlchecker.url.UrlData;
 import com.trianguloy.urlchecker.utilities.AndroidUtils;
 import com.trianguloy.urlchecker.utilities.GenericPref;
+import com.trianguloy.urlchecker.utilities.JavaUtils;
 
 import org.json.JSONArray;
 import org.json.JSONException;
@@ -135,7 +136,7 @@ class ClearUrlDialog extends AModuleDialog {
     }
 
     @Override
-    public UrlData onModifyUrl(UrlData urlData) {
+    public void onModifyUrl(UrlData urlData, JavaUtils.Function<UrlData, Boolean> setNewUrl) {
         cleared = urlData.url;
         data = new Data();
 
@@ -283,7 +284,8 @@ class ClearUrlDialog extends AModuleDialog {
         // url changed
         if (!cleared.equals(urlData.url)) {
             // apply automatically if required
-            if (auto.get()) return new UrlData(cleared).putData(CLEARED, CLEARED);
+            if (auto.get())
+                if (setNewUrl.apply(new UrlData(cleared).putData(CLEARED, CLEARED))) return;
 
             // enable button
             data.enabled = true;
@@ -291,7 +293,6 @@ class ClearUrlDialog extends AModuleDialog {
                 data.info += "\n\n -> " + cleared;
             }
         }
-        return null;
     }
 
     @Override

app/src/main/java/com/trianguloy/urlchecker/modules/list/PatternModule.java

@@ -103,7 +103,7 @@ class PatternDialog extends AModuleDialog {
     }
 
     @Override
-    public UrlData onModifyUrl(UrlData urlData) {
+    public void onModifyUrl(UrlData urlData, JavaUtils.Function<UrlData, Boolean> setNewUrl) {
         // init
         messages.clear();
         String url = urlData.url;
@@ -148,7 +148,7 @@ class PatternDialog extends AModuleDialog {
 
                         // automatic? apply
                         if (data.optBoolean("automatic")) {
-                            return new UrlData(message.newUrl).putData(APPLIED + pattern, APPLIED);
+                            if (setNewUrl.apply(new UrlData(message.newUrl).putData(APPLIED + pattern, APPLIED))) return;
                         }
                     }
                 }
@@ -162,9 +162,6 @@ class PatternDialog extends AModuleDialog {
                 e.printStackTrace();
             }
         }
-
-        // nothing to replace
-        return null;
     }
 
     @Override