Fragments

calculatorpp/AndroidManifest.xml

@@ -41,9 +41,9 @@
 
         <activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_functions" android:name=".math.edit.CalculatorFunctionsFragmentActivity"/>
 
-        <activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_functions" android:name=".math.edit.CalculatorFunctionsActivity"/>
+        <activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_functions" android:name=".math.edit.CalculatorFunctionsFragment"/>
 
-        <activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_operators" android:name=".math.edit.CalculatorOperatorsActivity"/>
+        <activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_operators" android:name=".math.edit.CalculatorOperatorsFragment"/>
 
         <activity android:configChanges="orientation|keyboardHidden" android:label="@string/c_vars_and_constants" android:name=".math.edit.CalculatorVarsFragmentActivity"/>
 

calculatorpp/res/drawable/second_pane_background.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2007 The Android Open Source Project
+
+     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.
+-->
+
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="@color/second_pane_background"/>
+    <corners android:radius="1dp" />
+</shape>

calculatorpp/res/layout/math_entities.xml

@@ -1,21 +1,17 @@
 <?xml version="1.0" encoding="utf-8"?>
 
-<!--
-  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
-  ~ For more information, please, contact se.solovyev@gmail.com
-  ~ or visit http://se.solovyev.org
-  -->
-
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
               a:orientation="vertical"
               a:id="@+id/ad_parent_view"
-    a:layout_width="fill_parent"
+              style="?fragmentLayoutStyle"
-    a:layout_height="fill_parent">
+              a:layout_width="match_parent"
+              a:layout_height="match_parent">
 
-    <ListView
+    <TextView a:id="@+id/fragmentTitle"
-        a:layout_width="fill_parent"
+              a:layout_height="wrap_content"
-        a:layout_height="fill_parent"
+              a:layout_width="match_parent"
-        a:layout_weight="1"
+              style="?fragmentTitleStyle"/>
-        a:id="@android:id/list"/>
+
+    <ListView style="?fragmentListViewStyle"/>
 
 </LinearLayout>

calculatorpp/res/values/styles-default-theme.xml

@@ -21,7 +21,7 @@
 	</style>
 
     <style name="default_second_pane_style">
-        <item name="android:background">@color/second_pane_background</item>
+        <item name="android:background">@drawable/second_pane_background</item>
         <item name="android:layout_margin">5dp</item>
     </style>
 

calculatorpp/src/main/java/org/solovyev/android/calculator/CalculatorActivity.java

@@ -29,8 +29,9 @@ import org.solovyev.android.FontSizeAdjuster;
 import org.solovyev.android.calculator.about.CalculatorReleaseNotesActivity;
 import org.solovyev.android.calculator.history.CalculatorHistoryFragment;
 import org.solovyev.android.calculator.history.CalculatorSavedHistoryFragment;
+import org.solovyev.android.calculator.math.edit.CalculatorFunctionsFragment;
+import org.solovyev.android.calculator.math.edit.CalculatorOperatorsFragment;
 import org.solovyev.android.calculator.math.edit.CalculatorVarsFragment;
-import org.solovyev.android.calculator.model.VarCategory;
 import org.solovyev.android.fragments.FragmentUtils;
 import org.solovyev.android.prefs.Preference;
 import org.solovyev.android.view.ColorButton;
@@ -77,10 +78,10 @@ public class CalculatorActivity extends SherlockFragmentActivity implements Font
         if (findViewById(R.id.main_second_pane) != null) {
             activityHelper.addTab(this, "history", CalculatorHistoryFragment.class, null, R.string.c_history, R.id.main_second_pane);
             activityHelper.addTab(this, "saved_history", CalculatorSavedHistoryFragment.class, null, R.string.c_saved_history, R.id.main_second_pane);
+            activityHelper.addTab(this, "vars", CalculatorVarsFragment.class, null, R.string.c_vars, R.id.main_second_pane);
+            activityHelper.addTab(this, "functions", CalculatorFunctionsFragment.class, null, R.string.c_functions, R.id.main_second_pane);
+            activityHelper.addTab(this, "operators", CalculatorOperatorsFragment.class, null, R.string.c_operators, R.id.main_second_pane);
 
-            for (VarCategory category : VarCategory.getCategoriesByTabOrder()) {
-                activityHelper.addTab(this, "vars_" + category.name(), CalculatorVarsFragment.class, CalculatorVarsFragment.createBundleFor(category.name()), category.getCaptionId(), R.id.main_second_pane);
-            }
             activityHelper.restoreSavedTab(this);
         }
 

calculatorpp/src/main/java/org/solovyev/android/calculator/CalculatorActivityLauncher.java

@@ -11,7 +11,7 @@ import org.solovyev.android.calculator.about.CalculatorAboutTabActivity;
 import org.solovyev.android.calculator.help.CalculatorHelpTabActivity;
 import org.solovyev.android.calculator.history.CalculatorHistoryFragmentActivity;
 import org.solovyev.android.calculator.math.edit.CalculatorFunctionsFragmentActivity;
-import org.solovyev.android.calculator.math.edit.CalculatorOperatorsActivity;
+import org.solovyev.android.calculator.math.edit.CalculatorOperatorsFragment;
 import org.solovyev.android.calculator.math.edit.CalculatorVarsFragment;
 import org.solovyev.android.calculator.math.edit.CalculatorVarsFragmentActivity;
 import org.solovyev.android.calculator.plot.CalculatorPlotActivity;
@@ -45,7 +45,7 @@ public class CalculatorActivityLauncher {
 	}
 
 	public static void showOperators(@NotNull final Context context) {
-		context.startActivity(new Intent(context, CalculatorOperatorsActivity.class));
+		context.startActivity(new Intent(context, CalculatorOperatorsFragment.class));
 	}
 
 	public static void showVars(@NotNull final Context context) {

calculatorpp/src/main/java/org/solovyev/android/calculator/CalculatorFragmentHelperImpl.java

@@ -19,10 +19,12 @@ public class CalculatorFragmentHelperImpl implements CalculatorFragmentHelper {
 
     public void setPaneTitle(@NotNull Fragment fragment, int titleResId) {
         final TextView fragmentTitle = (TextView) fragment.getView().findViewById(R.id.fragmentTitle);
+        if (fragmentTitle != null) {
             if (!isPane(fragment)) {
                 fragmentTitle.setVisibility(View.GONE);
             } else {
                 fragmentTitle.setText(fragment.getString(titleResId).toUpperCase());
             }
         }
+    }
 }

calculatorpp/src/main/java/org/solovyev/android/calculator/math/edit/AbstractMathEntityListFragment.java

@@ -170,7 +170,7 @@ public abstract class AbstractMathEntityListFragment<T extends MathEntity> exten
     }
 
     protected boolean isInCategory(@Nullable T t) {
-        return t != null && EqualsTool.areEqual(getMathEntityCategory(t), category);
+        return t != null && (category == null || EqualsTool.areEqual(getMathEntityCategory(t), category));
     }
 
     @NotNull

calculatorpp/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorFunctionsFragment.java

@@ -26,7 +26,7 @@ import java.util.List;
  * Date: 10/29/11
  * Time: 4:55 PM
  */
-public class CalculatorFunctionsActivity extends AbstractMathEntityListFragment<Function> {
+public class CalculatorFunctionsFragment extends AbstractMathEntityListFragment<Function> {
 
 	public static final String CREATE_FUN_EXTRA_STRING = "org.solovyev.android.calculator.math.edit.CalculatorFunctionsTabActivity_create_fun";
 

calculatorpp/src/main/java/org/solovyev/android/calculator/math/edit/CalculatorOperatorsFragment.java

@@ -20,7 +20,7 @@ import java.util.List;
  * Time: 1:53 PM
  */
 
-public class CalculatorOperatorsActivity extends AbstractMathEntityListFragment<Operator> {
+public class CalculatorOperatorsFragment extends AbstractMathEntityListFragment<Operator> {
 
     @Override
     protected int getTitleResId() {