Implemented home screen widget.

Update widgets when db changes.

GnucashMobile/AndroidManifest.xml

@@ -65,6 +65,13 @@
             </intent-filter>
         </activity>
         <activity android:name=".ui.settings.SettingsActivity"></activity>
+        <activity android:name=".ui.widget.Configuration"
+            android:theme="@style/Theme.Sherlock.Light.Dialog"
+            android:excludeFromRecents="true">
+		    <intent-filter>
+		        <action android:name="android.appwidget.action.APPWIDGET_CONFIGURE"/>
+		    </intent-filter>
+		</activity>
         <receiver android:name=".receivers.TransactionRecorder"
             android:label="Records transactions received through intents"
             android:permission="org.gnucash.android.permission.RECORD_TRANSACTION">
@@ -76,13 +83,21 @@
         </receiver>
         <receiver android:name=".receivers.AccountCreator"
             android:label="Creates new accounts"
-            android:permission="org.gnucash.android.permission.CREATE_ACCOUNT" android:enabled="true" android:exported="true">
+            android:permission="org.gnucash.android.permission.CREATE_ACCOUNT" 
+            android:enabled="true" android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.INSERT" />
                 <category android:name="android.intent.category.DEFAULT" />
                 <data android:mimeType="vnd.android.cursor.item/vnd.org.gnucash.android.account"/>
             </intent-filter>
         </receiver>
+        <receiver android:name=".receivers.TransactionAppWidgetProvider" >
+		    <intent-filter>
+		        <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+		    </intent-filter>
+		    <meta-data android:name="android.appwidget.provider"
+		               android:resource="@xml/transaction_appwidget_info" />
+		</receiver>
     </application>
 
 </manifest>

GnucashMobile/res/drawable/appwidget_bg_clickable.xml

@@ -0,0 +1,24 @@
+<!--
+  Copyright 2011 Google Inc.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@drawable/appwidget_bg_pressed" android:state_pressed="true" />
+    <item android:drawable="@drawable/appwidget_bg_focused"
+        android:state_focused="true"
+        android:state_enabled="true"
+        android:state_window_focused="true" />
+    <item android:drawable="@drawable/appwidget_bg" />
+</selector>

GnucashMobile/res/drawable/appwidget_button_center.xml

@@ -0,0 +1,25 @@
+<!--
+  Copyright 2011 Google Inc.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@drawable/appwidget_inner_pressed_c"
+        android:state_pressed="true" />
+    <item android:drawable="@drawable/appwidget_inner_focused_c"
+        android:state_focused="true"
+        android:state_enabled="true"
+        android:state_window_focused="true" />
+    <item android:drawable="@android:color/transparent" />
+</selector>

GnucashMobile/res/drawable/appwidget_button_left.xml

@@ -0,0 +1,25 @@
+<!--
+  Copyright 2011 Google Inc.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@drawable/appwidget_inner_pressed_l"
+        android:state_pressed="true" />
+    <item android:drawable="@drawable/appwidget_inner_focused_l"
+        android:state_focused="true"
+        android:state_enabled="true"
+        android:state_window_focused="true" />
+    <item android:drawable="@android:color/transparent" />
+</selector>

GnucashMobile/res/drawable/appwidget_button_right.xml

@@ -0,0 +1,25 @@
+<!--
+  Copyright 2011 Google Inc.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@drawable/appwidget_inner_pressed_r"
+        android:state_pressed="true" />
+    <item android:drawable="@drawable/appwidget_inner_focused_r"
+        android:state_focused="true"
+        android:state_enabled="true"
+        android:state_window_focused="true" />
+    <item android:drawable="@android:color/transparent" />
+</selector>

GnucashMobile/res/drawable/appwidget_dark_bg_clickable.xml

@@ -0,0 +1,24 @@
+<!--
+  Copyright 2011 Google Inc.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@drawable/appwidget_bg_pressed" android:state_pressed="true" />
+    <item android:drawable="@drawable/appwidget_dark_bg_focused"
+        android:state_focused="true"
+        android:state_enabled="true"
+        android:state_window_focused="true" />
+    <item android:drawable="@drawable/appwidget_dark_bg" />
+</selector>

GnucashMobile/res/layout/default_buttons.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:padding="10dp"
+    android:orientation="horizontal" >
+
+    <Button
+        android:id="@+id/btn_cancel"
+        android:layout_width="0dp"            
+        android:layout_height="wrap_content"
+        android:padding="14dp"
+        android:layout_weight="1"       
+        android:drawableLeft="@drawable/navigation_cancel"     
+        android:text="@string/btn_cancel" />
+
+    <Button
+        android:id="@+id/btn_save"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:padding="14dp"
+        android:layout_weight="1"        
+        android:drawableLeft="@drawable/navigation_accept"
+        android:text="@string/btn_save" />       
+</LinearLayout>

GnucashMobile/res/layout/widget_4x1.xml

@@ -0,0 +1,66 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ Written By: Ngewi Fet <ngewif@gmail.com>
+ Copyright (c) 2012 Ngewi Fet
+ 
+ This file is part of Gnucash for Android
+ 
+ Gnucash for Android is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2 of
+ the License, or (at your option) any later version.
+ 
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+ 
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, contact:
+ 
+ Free Software Foundation           Voice:  +1-617-542-5942
+ 51 Franklin Street, Fifth Floor    Fax:    +1-617-542-2652
+ Boston, MA  02110-1301,  USA       gnu@gnu.org
+-->
+
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+	android:layout_height="match_parent"
+	android:padding="@dimen/widget_margin">
+
+   <LinearLayout android:id="@+id/widget_layout"
+	    android:layout_width="match_parent"
+	    android:layout_height="match_parent"
+	    android:gravity="center_vertical"
+	    android:background="@drawable/appwidget_dark_bg_clickable"
+	    android:orientation="horizontal">
+
+	     <TextView android:id="@+id/account_name" 
+	         android:layout_width="0dp"
+	         android:layout_height="match_parent"
+	         android:layout_weight="1"
+	         android:gravity="center_vertical"
+	         android:singleLine="true"
+	         android:ellipsize="end"
+	         android:layout_marginLeft="@dimen/edge_padding"
+	         android:textAppearance="?android:attr/textAppearanceLarge"
+	         android:text="@string/label_account_name" /> 
+
+	    <TextView android:id="@+id/transactions_summary"
+	        android:layout_width="wrap_content"
+	        android:layout_height="match_parent"
+	        android:singleLine="true" 
+	        style="@style/ListItemText"
+	        android:layout_marginLeft="@dimen/widget_margin"
+	        android:layout_marginRight="@dimen/widget_margin" />      
+
+	    <ImageButton android:id="@+id/btn_new_transaction" 
+	        android:layout_width="48dp"
+	        android:layout_height="wrap_content"
+	        android:layout_marginRight="@dimen/edge_padding"
+	        android:layout_marginLeft="@dimen/edge_padding"
+	        android:src="@drawable/content_new"
+	        android:background="@drawable/appwidget_bg_clickable"
+	        android:contentDescription="@string/add_transaction_icon_description"/>
+	</LinearLayout>        
+</FrameLayout>

GnucashMobile/res/layout/widget_configuration.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical" >
+
+    <TextView
+	    android:id="@+id/label_account"
+	    android:text="@string/label_display_account"
+	    android:layout_height="wrap_content"
+	    android:layout_width="wrap_content"
+	    android:layout_marginBottom="-8dp"
+	    android:layout_marginTop="8dp"
+	    style="@style/TextAppearance.EditTransaction_LabelSmall" />
+    <Spinner
+        android:id="@+id/input_accounts_spinner"        
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" 
+        android:minHeight="?android:attr/listPreferredItemHeight" />
+
+    <include layout="@layout/default_buttons"/>
+</LinearLayout>

GnucashMobile/res/values-v14/dimens.xml

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ Written By: Ngewi Fet <ngewif@gmail.com>
+ Copyright (c) 2012 Ngewi Fet
+ 
+ This file is part of Gnucash for Android
+ 
+ Gnucash for Android is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2 of
+ the License, or (at your option) any later version.
+ 
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+ 
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, contact:
+ 
+ Free Software Foundation           Voice:  +1-617-542-5942
+ 51 Franklin Street, Fifth Floor    Fax:    +1-617-542-2652
+ Boston, MA  02110-1301,  USA       gnu@gnu.org
+-->
+
+<resources>
+    <dimen name="widget_margin">0dp</dimen>
+</resources>

GnucashMobile/res/values/dimens.xml

@@ -31,4 +31,5 @@
     <dimen name="text_size_medium">18sp</dimen>
     <dimen name="text_size_large">18sp</dimen>
     <dimen name="edge_padding">12dp</dimen>
+    <dimen name="widget_margin">8dp</dimen>
 </resources>

GnucashMobile/res/values/strings.xml

@@ -89,6 +89,7 @@
     <string name="description_permission_group">Record transactions in GnuCash, read GnuCash data</string>
     <string name="label_permission_record_transaction">record transactions</string>
     <string name="label_permission_create_account">create accounts</string>
+    <string name="label_display_account">Display account</string>
     <string-array name="currency_names">
         <item>Afghani</item>
 		<item>Algerian Dinar</item>
@@ -444,5 +445,6 @@
 		<item>ZWL</item>
 		<item>PLN</item>
     </string-array>
+
 
 </resources>

GnucashMobile/res/xml/transaction_appwidget_info.xml

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ Written By: Ngewi Fet <ngewif@gmail.com>
+ Copyright (c) 2012 Ngewi Fet
+ 
+ This file is part of Gnucash for Android
+ 
+ Gnucash for Android is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2 of
+ the License, or (at your option) any later version.
+ 
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+ 
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, contact:
+ 
+ Free Software Foundation           Voice:  +1-617-542-5942
+ 51 Franklin Street, Fifth Floor    Fax:    +1-617-542-2652
+ Boston, MA  02110-1301,  USA       gnu@gnu.org
+-->
+
+<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
+    android:minWidth="270dp"
+    android:minHeight="56dp"
+    android:updatePeriodMillis="86400000"
+    android:previewImage="@drawable/widget_preview"
+    android:initialLayout="@layout/widget_4x1"
+    android:configure="org.gnucash.android.ui.widget.Configuration"
+    android:resizeMode="horizontal">    
+</appwidget-provider>

GnucashMobile/src/org/gnucash/android/data/Account.java

@@ -24,6 +24,7 @@
 
 package org.gnucash.android.data;
 
+import java.math.BigDecimal;
 import java.util.ArrayList;
 import java.util.Currency;
 import java.util.List;
@@ -222,7 +223,7 @@ public boolean hasUnexportedTransactions(){
 	 * @return Aggregate amount of all transactions in account.
 	 */
 	public Money getBalance(){
-		Money balance = new Money();
+		Money balance = new Money(new BigDecimal(0), this.mCurrency);
 		for (Transaction transx : mTransactionsList) {
 			balance = balance.add(transx.getAmount());		
 		}