Empty handling

Implement handling:
- No entries in table
- No tables in database
- No databases available

app/src/main/java/info/nerull7/mysqlbrowser/DatabaseFragment.java

@@ -2,6 +2,7 @@ package info.nerull7.mysqlbrowser;
 
 import android.app.Fragment;
 import android.content.Intent;
+import android.graphics.Typeface;
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -10,6 +11,10 @@ import android.widget.AdapterView;
 import android.widget.ArrayAdapter;
 import android.widget.ListAdapter;
 import android.widget.ListView;
+import android.widget.RelativeLayout;
+import android.widget.TextView;
+
+import java.util.List;
 
 /**
  * Created by nerull7 on 14.07.14.
@@ -17,21 +22,33 @@ import android.widget.ListView;
 public class DatabaseFragment extends Fragment implements AdapterView.OnItemClickListener {
     private ListView databasesListView;
     private ListAdapter listAdapter;
+    private RelativeLayout rootView;
 
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){
         //Inflate the layout for this fragment
         View rootView = inflater.inflate(R.layout.fragment_database, container, false);
         databasesListView = (ListView) rootView.findViewById(R.id.databaseList);
+        this.rootView = (RelativeLayout) rootView;
 
         setupListViewDatabase();
         return rootView;
     }
 
-    private void setupListViewDatabase(){ // TODO: Handle no databases available problem
+    private void setupListViewDatabase(){
-        listAdapter = new ArrayAdapter<String>(getActivity(),android.R.layout.simple_list_item_1, Static.databaseConnector.getDatabases());
+        List<String> databases = Static.databaseConnector.getDatabases();
-        databasesListView.setAdapter(listAdapter);
+        if(databases!= null) {
-        databasesListView.setOnItemClickListener(this);
+            listAdapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1, databases);
+            databasesListView.setAdapter(listAdapter);
+            databasesListView.setOnItemClickListener(this);
+        } else {
+            TextView errorMessage = new TextView(getActivity());
+            errorMessage.setText(R.string.error_no_databases);
+            errorMessage.setTypeface(null, Typeface.ITALIC);
+            errorMessage.setClickable(false);
+            rootView.addView(errorMessage);
+            rootView.removeView(databasesListView);
+        }
     }
 
     @Override

app/src/main/java/info/nerull7/mysqlbrowser/EntriesFragment.java

@@ -9,6 +9,7 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.FrameLayout;
+import android.widget.RelativeLayout;
 import android.widget.ScrollView;
 import android.widget.TableLayout;
 import android.widget.TableRow;
@@ -26,6 +27,7 @@ public class EntriesFragment extends Fragment {
     private ScrollView entriesScrollView;
     private FrameLayout headerFrame;
     private int entriesLimit;
+    private RelativeLayout rootView;
 
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
@@ -37,11 +39,12 @@ public class EntriesFragment extends Fragment {
         entriesScrollView = (ScrollView) rootView.findViewById(R.id.entriesScrollView);
         headerFrame = (FrameLayout) rootView.findViewById(R.id.headerFrame);
         entriesLimit = getActivity().getSharedPreferences(SettingsFragment.PREFERENCE_FILE, Context.MODE_PRIVATE).getInt(SettingsFragment.ENTRIES_PAGE_LIMIT, SettingsFragment.ENTRIES_PAGE_LIMIT_DEF);
+        this.rootView = (RelativeLayout) rootView;
         setupTable();
         return rootView;
     }
 
-    private void setupTable(){ // TODO Empty table handling
+    private void setupTable(){
         List<String> fieldList = Static.databaseConnector.getFields(tableName);
 
         TableRow.LayoutParams layoutParams = new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.WRAP_CONTENT);
@@ -79,18 +82,28 @@ public class EntriesFragment extends Fragment {
 
         // Now we get Rows
         List<List<String>> rows = Static.databaseConnector.getRows(tableName, entriesLimit);
-        for(int i=0;i<rows.size();i++){
+        if(rows!=null) {
-            List<String> elements = rows.get(i);
+            for (int i = 0; i < rows.size(); i++) {
-            TableRow newRow = new TableRow(getActivity());
+                List<String> elements = rows.get(i);
-            for(int j=0;j<elements.size();j++) { // elements.size can be the same as in header so maybe some one number or not
+                TableRow newRow = new TableRow(getActivity());
-                TextView textView = new TextView(getActivity());
+                for (int j = 0; j < elements.size(); j++) { // elements.size can be the same as in header so maybe some one number or not
-                textView.setText(elements.get(j));
+                    TextView textView = new TextView(getActivity());
-                textView.setLayoutParams(layoutParams);
+                    textView.setText(elements.get(j));
-                newRow.addView(textView);
+                    textView.setLayoutParams(layoutParams);
+                    newRow.addView(textView);
+                }
+                entriesTable.addView(newRow);
             }
-            entriesTable.addView(newRow);
+            entriesTable.addView(headerRow);
+        } else {
+            TextView errorMessage = new TextView(getActivity());
+            errorMessage.setText(R.string.error_no_entries);
+            errorMessage.setTypeface(null, Typeface.ITALIC);
+            errorMessage.setClickable(false);
+            entriesScrollView.removeView(entriesTable);
+            rootView.addView(errorMessage);
+            headerFrame.addView(headerRow);
+            headerRow.setVisibility(View.VISIBLE);
         }
-
-        entriesTable.addView(headerRow);
     }
 }

app/src/main/java/info/nerull7/mysqlbrowser/TableFragment.java

@@ -2,14 +2,20 @@ package info.nerull7.mysqlbrowser;
 
 import android.app.Fragment;
 import android.content.Intent;
+import android.graphics.Typeface;
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+import android.view.ViewParent;
 import android.widget.AdapterView;
 import android.widget.ArrayAdapter;
 import android.widget.ListAdapter;
 import android.widget.ListView;
+import android.widget.RelativeLayout;
+import android.widget.TextView;
+
+import java.util.List;
 
 /**
  * Created by nerull7 on 14.07.14.
@@ -18,6 +24,7 @@ public class TableFragment extends Fragment implements AdapterView.OnItemClickLi
     private String databaseName;
     private ListView tablesList;
     private ListAdapter listAdapter;
+    private RelativeLayout rootView;
 
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
@@ -25,15 +32,25 @@ public class TableFragment extends Fragment implements AdapterView.OnItemClickLi
         View rootView = inflater.inflate(R.layout.fragment_table, container, false);
         databaseName = getArguments().getString("DatabaseName");
         tablesList = (ListView) rootView.findViewById(R.id.tableList);
+        this.rootView = (RelativeLayout) rootView;
         setupList();
         return rootView;
     }
 
     private void setupList(){
-        listAdapter = new ArrayAdapter<String>(getActivity(),android.R.layout.simple_list_item_1, Static.databaseConnector.getTables());
+        List<String> tables = Static.databaseConnector.getTables();
-        // TODO No tables handling
+        if(tables != null) {
-        tablesList.setAdapter(listAdapter);
+            listAdapter = new ArrayAdapter<String>(getActivity(),android.R.layout.simple_list_item_1, tables);
-        tablesList.setOnItemClickListener(this);
+            tablesList.setAdapter(listAdapter);
+            tablesList.setOnItemClickListener(this);
+        } else {
+            TextView errorMessage = new TextView(getActivity());
+            errorMessage.setText(R.string.error_no_tables);
+            errorMessage.setTypeface(null, Typeface.ITALIC);
+            errorMessage.setClickable(false);
+            rootView.addView(errorMessage);
+            rootView.removeView(tablesList);
+        }
     }
 
     @Override

app/src/main/res/values/strings.xml

@@ -22,5 +22,8 @@
     <string name="cancel">Cancel</string>
     <string name="set">Set</string>
     <string name="pref_entries_per_page">Set number of entries per page</string>
+    <string name="error_no_tables">No tables in this database</string>
+    <string name="error_no_entries">No entries in this table</string>
+    <string name="error_no_databases">No available databases</string>
 
 </resources>