Moved some popups to their own class

Sources/app/src/main/java/Popups/BuildingPopup.java

+package Popups;
+
+import android.content.Context;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.TextView;
+
+import androidx.appcompat.app.AlertDialog;
+
+import com.furwaz.roomview.R;
+
+import Common.BuildingManager;
+import Common.Callback;
+
+public class BuildingPopup {
+    public static final int MODE_NEW = 1;
+    public static final int MODE_EDIT = 2;
+
+    AlertDialog dialog = null;
+    TextView b_err = null;
+    EditText b_name = null;
+    Button validate_btn = null;
+    Button cancel_btn = null;
+    TextView popup_title = null;
+
+    public BuildingPopup(Context context, Callback onCreate, Callback onCancel, Callback onValidate, int mode) {
+        AlertDialog.Builder builder = new AlertDialog.Builder(context);
+        dialog = builder.create();
+        LayoutInflater factory = LayoutInflater.from(context);
+        View popup = factory.inflate(R.layout.add_building_popup, null);
+        dialog.setView(popup);
+
+        dialog.setOnShowListener(dialogInterface -> {
+            b_err = popup.findViewById(R.id.building_input_error_msg);
+            b_name = popup.findViewById(R.id.input_building_name);
+            validate_btn = popup.findViewById(R.id.btn_validate_building);
+            cancel_btn = popup.findViewById(R.id.btn_cancel_building);
+            popup_title = popup.findViewById(R.id.building_popup_title);
+
+            onCreate.call(this);
+
+            String title = context.getResources().getString( (mode == MODE_EDIT)? R.string.edit_building : R.string.new_building );
+            String btn_text = context.getResources().getString( (mode == MODE_EDIT)? R.string.edit : R.string.create );
+            popup_title.setText(title);
+            validate_btn.setText(btn_text);
+            validate_btn.setEnabled(false);
+            b_err.setText("");
+            b_name.addTextChangedListener(new TextWatcher() {
+                public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
+                public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
+                public void afterTextChanged(Editable editable) {
+                    validate_btn.setEnabled(false);
+                    b_err.setText("");
+                    String input = editable.toString();
+                    if (input.length() == 0) {
+                        b_err.setText(context.getResources().getString(R.string.specify_building_name));
+                        return;
+                    }
+                    if (BuildingManager.getBuilding(input) != null) {
+                        b_err.setText(context.getResources().getString(R.string.building_exists));
+                        return;
+                    }
+                    if (input.contains("/")) {
+                        b_err.setText(context.getResources().getString(R.string.building_invalid));
+                        return;
+                    }
+                    // everything is correct, display the button
+                    validate_btn.setEnabled(true);
+                }
+            });
+
+            cancel_btn.setOnClickListener(view -> onCancel.call(this));
+
+            validate_btn.setOnClickListener(view -> onValidate.call(this));
+        });
+    }
+
+    public void show() {
+        dialog.show();
+    }
+
+    public void dismiss() {
+        dialog.dismiss();
+    }
+
+    public Button getCancel_btn() {
+        return cancel_btn;
+    }
+
+    public Button getValidate_btn() {
+        return validate_btn;
+    }
+
+    public EditText getInput() {
+        return b_name;
+    }
+
+    public TextView getTitle() {
+        return popup_title;
+    }
+}

Sources/app/src/main/java/Popups/RoomPopup.java

+package Popups;
+
+import android.content.Context;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.TextView;
+
+import androidx.appcompat.app.AlertDialog;
+
+import com.furwaz.roomview.BuildingActivity;
+import com.furwaz.roomview.R;
+
+import Common.Callback;
+import Structures.BuildingInfo;
+import Structures.RoomInfo;
+
+public class RoomPopup {
+    public static final int MODE_NEW = 1;
+    public static final int MODE_EDIT = 2;
+
+    AlertDialog dialog = null;
+    TextView r_err = null;
+    EditText r_name = null;
+    Button validate_btn = null;
+    Button cancel_btn = null;
+    TextView room_title = null;
+
+    public RoomPopup(Context context, BuildingInfo building, Callback onCreate, Callback onCancel, Callback onValidate, int mode) {
+        AlertDialog.Builder builder = new AlertDialog.Builder(context);
+        dialog = builder.create();
+        LayoutInflater factory = LayoutInflater.from(context);
+        View popup = factory.inflate(R.layout.add_room_popup, null);
+        dialog.setView(popup);
+
+        dialog.setOnShowListener(dialogInterface -> {
+            r_err = popup.findViewById(R.id.room_input_error_msg);
+            r_name = popup.findViewById(R.id.input_room_name);
+            validate_btn = popup.findViewById(R.id.btn_validate_room);
+            cancel_btn = popup.findViewById(R.id.btn_cancel_room);
+            room_title = popup.findViewById(R.id.room_popup_title);
+
+            onCreate.call(this);
+
+            String title = context.getResources().getString( (mode == MODE_EDIT)? R.string.edit_room : R.string.new_room );
+            String btn_text = context.getResources().getString( (mode == MODE_EDIT)? R.string.edit : R.string.create );
+            room_title.setText(title);
+            validate_btn.setText(btn_text);
+            validate_btn.setEnabled(false);
+            r_err.setText("");
+            r_name.addTextChangedListener(new TextWatcher() {
+                public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
+                public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
+                public void afterTextChanged(Editable editable) {
+                    validate_btn.setEnabled(false);
+                    r_err.setText("");
+                    String input = editable.toString();
+                    if (input.length() == 0) {
+                        r_err.setText(context.getResources().getString(R.string.specify_room_name));
+                        return;
+                    }
+                    if (building.getRoom(input) != null) {
+                        r_err.setText(context.getResources().getString(R.string.room_exists));
+                        return;
+                    }
+                    // everything is correct, display the button
+                    validate_btn.setEnabled(true);
+                }
+            });
+
+            cancel_btn.setOnClickListener(view -> onCancel.call(this));
+
+            validate_btn.setOnClickListener(view -> onValidate.call(this));
+        });
+        dialog.show();
+    }
+
+    public void dismiss() {
+        dialog.dismiss();
+    }
+
+    public EditText getInput() {
+        return r_name;
+    }
+
+    public void show() {
+        dialog.show();
+    }
+}