Implemented a removing of the account.

Author: evgenii

app/src/main/java/com/blogspot/e_kanivets/moneytracker/fragment/AccountsFragment.java

@@ -5,9 +5,12 @@
 import android.support.v4.app.Fragment;
 import android.support.v7.app.ActionBar;
 import android.support.v7.app.ActionBarActivity;
+import android.view.ContextMenu;
 import android.view.LayoutInflater;
+import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.AdapterView;
 import android.widget.BaseAdapter;
 import android.widget.ListView;
 
@@ -16,6 +19,7 @@
 import com.blogspot.e_kanivets.moneytracker.adapter.AccountAdapter;
 import com.blogspot.e_kanivets.moneytracker.adapter.RecordAdapter;
 import com.blogspot.e_kanivets.moneytracker.helper.MTHelper;
+import com.blogspot.e_kanivets.moneytracker.model.Record;
 
 import java.util.Observable;
 import java.util.Observer;
@@ -84,6 +88,27 @@ public void onClick(View v) {
         }
     }
 
+    @Override
+    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
+        super.onCreateContextMenu(menu, v, menuInfo);
+
+        getActivity().getMenuInflater().inflate(R.menu.menu_account, menu);
+    }
+
+    @Override
+    public boolean onContextItemSelected(MenuItem item) {
+        AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item.getMenuInfo();
+
+        switch (item.getItemId()) {
+            case R.id.delete:
+                MTHelper.getInstance().deleteAccount(
+                        MTHelper.getInstance().getAccounts().get(info.position));
+                return true;
+            default:
+                return super.onContextItemSelected(item);
+        }
+    }
+
     @Override
     public void update(Observable observable, Object data) {
         ((BaseAdapter) listView.getAdapter()).notifyDataSetChanged();
@@ -97,6 +122,7 @@ private void initViews(View rootView) {
 
             listView.setAdapter(new AccountAdapter(getActivity(), MTHelper.getInstance().getAccounts()));
             ((BaseAdapter) listView.getAdapter()).notifyDataSetChanged();
+            registerForContextMenu(listView);
 
             //Subscribe to helper
             MTHelper.getInstance().addObserver(this);

app/src/main/java/com/blogspot/e_kanivets/moneytracker/helper/MTHelper.java

@@ -317,6 +317,25 @@ public void updateAccountById(int id, int diff) {
         notifyObservers();
     }
 
+    /**
+     * Deletes an account from DB and app cash. Uses the account id from @account.
+     * @param account to determine which account should be deleted.
+     */
+    public void deleteAccount(Account account) {
+        // Delete the account from DB
+        SQLiteDatabase db = dbHelper.getWritableDatabase();
+        db.delete(DBHelper.TABLE_ACCOUNTS, "id=?",
+                new String[]{Integer.toString(account.getId())});
+        db.close();
+
+        // Delete the account from app list
+        accounts.remove(account);
+
+        //notify observers
+        setChanged();
+        notifyObservers();
+    }
+
     public void deleteRecordById(int id) {
         for (Record record : records) {
             if (record.getId() == id) {

app/src/main/java/com/blogspot/e_kanivets/moneytracker/model/Account.java

@@ -34,4 +34,14 @@ public int getCurSum() {
     public void setCurSum(int curSum) {
         this.curSum = curSum;
     }
+
+    @SuppressWarnings("SimplifiableIfStatement")
+    @Override
+    public boolean equals(Object o) {
+        if (o instanceof Account) {
+            return ((Account) o).getId() == getId();
+        } else {
+            return false;
+        }
+    }
 }

app/src/main/res/menu/menu_account.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:id="@+id/delete" android:title="@string/delete"/>
+</menu>