changes

calculatorpp-core/src/main/java/org/solovyev/android/calculator/CalculatorFailureImpl.java

@@ -31,4 +31,11 @@ public class CalculatorFailureImpl implements CalculatorFailure {
     public CalculatorEvalException getCalculationEvalException() {
         return exception instanceof CalculatorEvalException ? (CalculatorEvalException)exception : null;
     }
+
+    @Override
+    public String toString() {
+        return "CalculatorFailureImpl{" +
+                "exception=" + exception +
+                '}';
+    }
 }

calculatorpp-core/src/main/java/org/solovyev/android/calculator/CalculatorLocator.java

@@ -14,7 +14,8 @@ public interface CalculatorLocator {
               @NotNull CalculatorEngine engine,
               @NotNull CalculatorClipboard clipboard,
               @NotNull CalculatorNotifier notifier,
-              @NotNull CalculatorHistory history);
+              @NotNull CalculatorHistory history,
+              @NotNull CalculatorLogger logger);
 
     @NotNull
     Calculator getCalculator();
@@ -39,4 +40,7 @@ public interface CalculatorLocator {
 
     @NotNull
     CalculatorHistory getHistory();
+
+    @NotNull
+    CalculatorLogger getLogger();
 }

calculatorpp-core/src/main/java/org/solovyev/android/calculator/CalculatorLocatorImpl.java

@@ -1,113 +1,124 @@
-package org.solovyev.android.calculator;
-
-import org.jetbrains.annotations.NotNull;
-import org.solovyev.android.calculator.history.CalculatorHistory;
-
-/**
- * User: Solovyev_S
- * Date: 20.09.12
- * Time: 12:45
- */
-public class CalculatorLocatorImpl implements CalculatorLocator {
-
-    @NotNull
-    private CalculatorEngine calculatorEngine;
-
-    @NotNull
-    private Calculator calculator;
-
-    @NotNull
-    private CalculatorEditor calculatorEditor;
-
-    @NotNull
-    private CalculatorDisplay calculatorDisplay;
-
-    @NotNull
-    private CalculatorKeyboard calculatorKeyboard;
-
-    @NotNull
-    private CalculatorHistory calculatorHistory;
-
-    @NotNull
-    private CalculatorNotifier calculatorNotifier = new DummyCalculatorNotifier();
-
-    @NotNull
-    private CalculatorClipboard calculatorClipboard = new DummyCalculatorClipboard();
-
-    @NotNull
-    private static final CalculatorLocator instance = new CalculatorLocatorImpl();
-
-    public CalculatorLocatorImpl() {
-    }
-
-    @Override
-    public void init(@NotNull Calculator calculator,
-                     @NotNull CalculatorEngine engine,
-                     @NotNull CalculatorClipboard clipboard,
-                     @NotNull CalculatorNotifier notifier,
-                     @NotNull CalculatorHistory history) {
-
-        this.calculator = calculator;
-        this.calculatorEngine = engine;
-        this.calculatorClipboard = clipboard;
-        this.calculatorNotifier = notifier;
-        this.calculatorHistory = history;
-
-        calculatorEditor = new CalculatorEditorImpl(this.calculator);
-        calculatorDisplay = new CalculatorDisplayImpl(this.calculator);
-        calculatorKeyboard = new CalculatorKeyboardImpl(this.calculator);
-    }
-
-    @NotNull
-    public static CalculatorLocator getInstance() {
-        return instance;
-    }
-
-    @NotNull
-    @Override
-    public CalculatorEngine getEngine() {
-        return calculatorEngine;
-    }
-
-    @NotNull
-    @Override
-    public Calculator getCalculator() {
-        return this.calculator;
-    }
-
-    @Override
-    @NotNull
-    public CalculatorDisplay getDisplay() {
-        return calculatorDisplay;
-    }
-
-    @NotNull
-    @Override
-    public CalculatorEditor getEditor() {
-        return calculatorEditor;
-    }
-
-    @Override
-    @NotNull
-    public CalculatorKeyboard getKeyboard() {
-        return calculatorKeyboard;
-    }
-
-    @Override
-    @NotNull
-    public CalculatorClipboard getClipboard() {
-        return calculatorClipboard;
-    }
-
-    @Override
-    @NotNull
-    public CalculatorNotifier getNotifier() {
-        return calculatorNotifier;
-    }
-
-    @Override
-    @NotNull
-    public CalculatorHistory getHistory() {
-        return calculatorHistory;
-    }
-}
+package org.solovyev.android.calculator;
+
+import org.jetbrains.annotations.NotNull;
+import org.solovyev.android.calculator.history.CalculatorHistory;
+
+/**
+ * User: Solovyev_S
+ * Date: 20.09.12
+ * Time: 12:45
+ */
+public class CalculatorLocatorImpl implements CalculatorLocator {
+
+    @NotNull
+    private CalculatorEngine calculatorEngine;
+
+    @NotNull
+    private Calculator calculator;
+
+    @NotNull
+    private CalculatorEditor calculatorEditor;
+
+    @NotNull
+    private CalculatorDisplay calculatorDisplay;
+
+    @NotNull
+    private CalculatorKeyboard calculatorKeyboard;
+
+    @NotNull
+    private CalculatorHistory calculatorHistory;
+
+    @NotNull
+    private CalculatorNotifier calculatorNotifier = new DummyCalculatorNotifier();
+
+    @NotNull
+    private CalculatorLogger calculatorLogger = new SystemOutCalculatorLogger();
+
+    @NotNull
+    private CalculatorClipboard calculatorClipboard = new DummyCalculatorClipboard();
+
+    @NotNull
+    private static final CalculatorLocator instance = new CalculatorLocatorImpl();
+
+    public CalculatorLocatorImpl() {
+    }
+
+    @Override
+    public void init(@NotNull Calculator calculator,
+                     @NotNull CalculatorEngine engine,
+                     @NotNull CalculatorClipboard clipboard,
+                     @NotNull CalculatorNotifier notifier,
+                     @NotNull CalculatorHistory history,
+                     @NotNull CalculatorLogger logger) {
+
+        this.calculator = calculator;
+        this.calculatorEngine = engine;
+        this.calculatorClipboard = clipboard;
+        this.calculatorNotifier = notifier;
+        this.calculatorHistory = history;
+        this.calculatorLogger = logger;
+
+        calculatorEditor = new CalculatorEditorImpl(this.calculator);
+        calculatorDisplay = new CalculatorDisplayImpl(this.calculator);
+        calculatorKeyboard = new CalculatorKeyboardImpl(this.calculator);
+    }
+
+    @NotNull
+    public static CalculatorLocator getInstance() {
+        return instance;
+    }
+
+    @NotNull
+    @Override
+    public CalculatorEngine getEngine() {
+        return calculatorEngine;
+    }
+
+    @NotNull
+    @Override
+    public Calculator getCalculator() {
+        return this.calculator;
+    }
+
+    @Override
+    @NotNull
+    public CalculatorDisplay getDisplay() {
+        return calculatorDisplay;
+    }
+
+    @NotNull
+    @Override
+    public CalculatorEditor getEditor() {
+        return calculatorEditor;
+    }
+
+    @Override
+    @NotNull
+    public CalculatorKeyboard getKeyboard() {
+        return calculatorKeyboard;
+    }
+
+    @Override
+    @NotNull
+    public CalculatorClipboard getClipboard() {
+        return calculatorClipboard;
+    }
+
+    @Override
+    @NotNull
+    public CalculatorNotifier getNotifier() {
+        return calculatorNotifier;
+    }
+
+    @Override
+    @NotNull
+    public CalculatorHistory getHistory() {
+        return calculatorHistory;
+    }
+
+    @Override
+    @NotNull
+    public CalculatorLogger getLogger() {
+        return calculatorLogger;
+    }
+}

calculatorpp-core/src/main/java/org/solovyev/android/calculator/CalculatorLogger.java

@@ -0,0 +1,16 @@
+package org.solovyev.android.calculator;
+
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * User: serso
+ * Date: 10/11/12
+ * Time: 12:11 AM
+ */
+public interface CalculatorLogger {
+
+    void debug(@Nullable String tag, @NotNull String message);
+
+    void debug(@Nullable String tag, @NotNull String message, @NotNull Throwable e);
+}

calculatorpp-core/src/main/java/org/solovyev/android/calculator/ListCalculatorEventContainer.java

@@ -39,10 +39,18 @@ public class ListCalculatorEventContainer implements CalculatorEventContainer {
     public void fireCalculatorEvents(@NotNull List<CalculatorEvent> calculatorEvents) {
         final List<CalculatorEventListener> listeners = this.listeners.getListeners();
 
+        final CalculatorLogger logger = CalculatorLocatorImpl.getInstance().getLogger();
+
         for (CalculatorEvent e : calculatorEvents) {
-            //Log.d(TAG, "Event: " + e.getCalculatorEventType() + " with data: " + e.getData());
             for (CalculatorEventListener listener : listeners) {
+                long startTime = System.currentTimeMillis();
                 listener.onCalculatorEvent(e.getCalculatorEventData(), e.getCalculatorEventType(), e.getData());
+                long endTime = System.currentTimeMillis();
+                long totalTime = (endTime - startTime);
+                if ( totalTime > 300 ) {
+                    logger.debug(TAG + "_" + e.getCalculatorEventData().getEventId(), "Started event: " + e.getCalculatorEventType() + " with data: " + e.getData() + " for: " + listener.getClass().getSimpleName());
+                    logger.debug(TAG + "_" + e.getCalculatorEventData().getEventId(), "Total time, ms: " + totalTime);
+                }
             }
         }
     }

calculatorpp-core/src/main/java/org/solovyev/android/calculator/SystemOutCalculatorLogger.java

@@ -0,0 +1,31 @@
+package org.solovyev.android.calculator;
+
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * User: serso
+ * Date: 10/11/12
+ * Time: 12:12 AM
+ */
+public class SystemOutCalculatorLogger implements CalculatorLogger {
+
+    @NotNull
+    private static final String TAG = SystemOutCalculatorLogger.class.getSimpleName();
+
+    @Override
+    public void debug(@Nullable String tag, @NotNull String message) {
+        System.out.println(getTag(tag) + ": " + message);
+    }
+
+    @NotNull
+    private String getTag(@Nullable String tag) {
+        return tag != null ? tag : TAG;
+    }
+
+    @Override
+    public void debug(@Nullable String tag, @NotNull String message, @NotNull Throwable e) {
+        debug(tag, message);
+        e.printStackTrace(System.out);
+    }
+}

calculatorpp-core/src/test/java/org/solovyev/android/calculator/AbstractCalculatorTest.java

@@ -11,7 +11,7 @@ import org.solovyev.android.calculator.history.CalculatorHistory;
 public class AbstractCalculatorTest {
 
     protected void setUp() throws Exception {
-        CalculatorLocatorImpl.getInstance().init(new CalculatorImpl(), CalculatorTestUtils.newCalculatorEngine(), Mockito.mock(CalculatorClipboard.class), Mockito.mock(CalculatorNotifier.class), Mockito.mock(CalculatorHistory.class));
+        CalculatorLocatorImpl.getInstance().init(new CalculatorImpl(), CalculatorTestUtils.newCalculatorEngine(), Mockito.mock(CalculatorClipboard.class), Mockito.mock(CalculatorNotifier.class), Mockito.mock(CalculatorHistory.class), null);
         CalculatorLocatorImpl.getInstance().getEngine().init();
     }
 

calculatorpp-core/src/test/java/org/solovyev/android/calculator/CalculatorTestUtils.java

@@ -22,7 +22,7 @@ public class CalculatorTestUtils {
     public static final int TIMEOUT = 1;
 
     public static void staticSetUp() throws Exception {
-        CalculatorLocatorImpl.getInstance().init(new CalculatorImpl(), newCalculatorEngine(), Mockito.mock(CalculatorClipboard.class), Mockito.mock(CalculatorNotifier.class), Mockito.mock(CalculatorHistory.class));
+        CalculatorLocatorImpl.getInstance().init(new CalculatorImpl(), newCalculatorEngine(), Mockito.mock(CalculatorClipboard.class), Mockito.mock(CalculatorNotifier.class), Mockito.mock(CalculatorHistory.class), null);
         CalculatorLocatorImpl.getInstance().getEngine().init();
     }
 

calculatorpp/project.properties

@@ -11,14 +11,14 @@
 target=android-15
 android.library.reference.1=gen-external-apklibs/org.solovyev.android_android-common-core_1.0.0
 android.library.reference.2=gen-external-apklibs/org.solovyev.android_android-common-ads_1.0.0
-android.library.reference.3=gen-external-apklibs/org.solovyev.android_android-common-view_1.0.0
-android.library.reference.4=gen-external-apklibs/org.solovyev.android_android-common-preferences_1.0.0
-android.library.reference.5=gen-external-apklibs/org.solovyev.android_android-common-other_1.0.0
-android.library.reference.6=gen-external-apklibs/org.solovyev.android_android-common-menu_1.0.0
-android.library.reference.7=gen-external-apklibs/org.solovyev.android_android-common-sherlock_1.0.0
-android.library.reference.8=gen-external-apklibs/com.actionbarsherlock_library_4.1.0
-android.library.reference.9=gen-external-apklibs/org.solovyev.android_android-common-list_1.0.0
-android.library.reference.10=gen-external-apklibs/org.solovyev.android_billing_0.2
-android.library.reference.11=gen-external-apklibs/org.solovyev.android_android-common-db_1.0.0
+android.library.reference.3=gen-external-apklibs/org.solovyev.android_billing_0.2
+android.library.reference.4=gen-external-apklibs/org.solovyev.android_android-common-db_1.0.0
+android.library.reference.5=gen-external-apklibs/org.solovyev.android_android-common-view_1.0.0
+android.library.reference.6=gen-external-apklibs/org.solovyev.android_android-common-preferences_1.0.0
+android.library.reference.7=gen-external-apklibs/org.solovyev.android_android-common-other_1.0.0
+android.library.reference.8=gen-external-apklibs/org.solovyev.android_android-common-menu_1.0.0
+android.library.reference.9=gen-external-apklibs/org.solovyev.android_android-common-sherlock_1.0.0
+android.library.reference.10=gen-external-apklibs/com.actionbarsherlock_library_4.1.0
+android.library.reference.11=gen-external-apklibs/org.solovyev.android_android-common-list_1.0.0
 
 

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

@@ -51,7 +51,7 @@ public class AndroidCalculatorDisplayView extends AutoResizeTextView implements
     private final Object lock = new Object();
 
     @NotNull
-    private final Handler handler = new Handler();
+    private final Handler uiHandler = new Handler();
 
     private volatile boolean initialized = false;
 
@@ -88,7 +88,7 @@ public class AndroidCalculatorDisplayView extends AutoResizeTextView implements
     @Override
     public void setState(@NotNull final CalculatorDisplayViewState state) {
 
-        handler.post(new Runnable() {
+        uiHandler.post(new Runnable() {
             @Override
             public void run() {
 
@@ -96,7 +96,12 @@ public class AndroidCalculatorDisplayView extends AutoResizeTextView implements
                     try {
                         viewStateChange = true;
 
+                        long startTime = System.currentTimeMillis();
                         final CharSequence text = prepareText(state.getStringResult(), state.isValid());
+                        long endTime = System.currentTimeMillis();
+                        long totalTime = (endTime - startTime);
+                        CalculatorLocatorImpl.getInstance().getLogger().debug("CalculatorDisplayView", "Total time, ms: " + totalTime);
+
 
                         AndroidCalculatorDisplayView.this.state = state;
                         if (state.isValid()) {

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

@@ -1,213 +1,214 @@
-/*
- * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
- * For more information, please, contact se.solovyev@gmail.com
- */
-
-package org.solovyev.android.calculator;
-
-import android.content.Context;
-import android.content.SharedPreferences;
-import android.graphics.Color;
-import android.os.Build;
-import android.os.Handler;
-import android.preference.PreferenceManager;
-import android.text.Editable;
-import android.text.Html;
-import android.text.TextWatcher;
-import android.util.AttributeSet;
-import android.util.Log;
-import android.view.ContextMenu;
-import android.widget.EditText;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
-import org.solovyev.android.calculator.text.TextProcessor;
-import org.solovyev.android.calculator.view.TextHighlighter;
-import org.solovyev.common.collections.CollectionsUtils;
-
-/**
- * User: serso
- * Date: 9/17/11
- * Time: 12:25 AM
- */
-public class AndroidCalculatorEditorView extends EditText implements SharedPreferences.OnSharedPreferenceChangeListener, CalculatorEditorView {
-
-    private static final String CALC_COLOR_DISPLAY_KEY = "org.solovyev.android.calculator.CalculatorModel_color_display";
-    private static final boolean CALC_COLOR_DISPLAY_DEFAULT = true;
-
-    private volatile boolean initialized = false;
-
-    private boolean highlightText = true;
-
-    @NotNull
-    private final static TextProcessor<TextHighlighter.Result, String> textHighlighter = new TextHighlighter(Color.WHITE, false);
-
-    @NotNull
-    private volatile CalculatorEditorViewState viewState = CalculatorEditorViewStateImpl.newDefaultInstance();
-
-    private volatile boolean viewStateChange = false;
-
-    // NOTE: static because super constructor calls some overridden methods (like onSelectionChanged and current lock is not yet created)
-    @NotNull
-    private static final Object lock = new Object();
-
-    @NotNull
-    private final Handler handler = new Handler();
-
-    public AndroidCalculatorEditorView(Context context) {
-        super(context);
-    }
-
-    public AndroidCalculatorEditorView(Context context, AttributeSet attrs) {
-        super(context, attrs);
-    }
-
-    public AndroidCalculatorEditorView(Context context, AttributeSet attrs, int defStyle) {
-        super(context, attrs, defStyle);
-    }
-
-    @Override
-    public boolean onCheckIsTextEditor() {
-        // NOTE: code below can be used carefully and should not be copied without special intention
-        // The main purpose of code is to disable soft input (virtual keyboard) but leave all the TextEdit functionality, like cursor, scrolling, copy/paste menu etc
-
-        if (Build.VERSION.SDK_INT >= 11) {
-            // fix for missing cursor in android 3 and higher
-            try {
-                // IDEA: return false always except if method was called from TextView.isCursorVisible() method
-                for (StackTraceElement stackTraceElement : CollectionsUtils.asList(Thread.currentThread().getStackTrace())) {
-                    if ("isCursorVisible".equals(stackTraceElement.getMethodName())) {
-                        return true;
-                    }
-                }
-            } catch (RuntimeException e) {
-                // just in case...
-            }
-
-            return false;
-        } else {
-            return false;
-        }
-    }
-
-    @Override
-    protected void onCreateContextMenu(ContextMenu menu) {
-        super.onCreateContextMenu(menu);
-
-        menu.removeItem(android.R.id.selectAll);
-    }
-
-    @Nullable
-    private CharSequence prepareText(@NotNull String text, boolean highlightText) {
-        CharSequence result;
-
-         if (highlightText) {
-
-             try {
-                 final TextHighlighter.Result processesText = textHighlighter.process(text);
-
-                 assert processesText.getOffset() == 0;
-
-                 result = Html.fromHtml(processesText.toString());
-             } catch (CalculatorParseException e) {
-                 // set raw text
-                 result = text;
-
-                 Log.e(this.getClass().getName(), e.getMessage(), e);
-             }
-         } else {
-             result = text;
-         }
-
-        return result;
-     }
-
-    public boolean isHighlightText() {
-        return highlightText;
-    }
-
-    public void setHighlightText(boolean highlightText) {
-        this.highlightText = highlightText;
-        CalculatorLocatorImpl.getInstance().getEditor().updateViewState();
-    }
-
-    @Override
-    public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
-        if (CALC_COLOR_DISPLAY_KEY.equals(key)) {
-            this.setHighlightText(preferences.getBoolean(CALC_COLOR_DISPLAY_KEY, CALC_COLOR_DISPLAY_DEFAULT));
-        }
-    }
-
-    public synchronized void init(@NotNull Context context) {
-        if (!initialized) {
-            final SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
-
-            preferences.registerOnSharedPreferenceChangeListener(this);
-
-            this.addTextChangedListener(new TextWatcherImpl());
-
-            onSharedPreferenceChanged(preferences, CALC_COLOR_DISPLAY_KEY);
-
-            initialized = true;
-        }
-    }
-
-    @Override
-    public void setState(@NotNull final CalculatorEditorViewState viewState) {
-
-        final CharSequence text = prepareText(viewState.getText(), highlightText);
-
-        handler.post(new Runnable() {
-            @Override
-            public void run() {
-                final AndroidCalculatorEditorView editorView = AndroidCalculatorEditorView.this;
-                synchronized (lock) {
-                    try {
-                        editorView.viewStateChange = true;
-                        editorView.viewState = viewState;
-                        editorView.setText(text, BufferType.EDITABLE);
-                        editorView.setSelection(viewState.getSelection());
-                    } finally {
-                        editorView.viewStateChange = false;
-                    }
-                }
-            }
-        });
-    }
-
-    @Override
-    protected void onSelectionChanged(int selStart, int selEnd) {
-        synchronized (lock) {
-            if (!viewStateChange) {
-                // external text change => need to notify editor
-                super.onSelectionChanged(selStart, selEnd);
-                CalculatorLocatorImpl.getInstance().getEditor().setSelection(selStart);
-            }
-        }
-    }
-
-    public void handleTextChange(Editable s) {
-        synchronized (lock) {
-            if (!viewStateChange) {
-                // external text change => need to notify editor
-                CalculatorLocatorImpl.getInstance().getEditor().setText(String.valueOf(s));
-            }
-        }
-    }
-
-    private final class TextWatcherImpl implements TextWatcher {
-
-        @Override
-        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
-
-        }
-
-        @Override
-        public void onTextChanged(CharSequence s, int start, int before, int count) {
-        }
-
-        @Override
-        public void afterTextChanged(Editable s) {
-            handleTextChange(s);
-        }
-    }
-}
+/*
+ * Copyright (c) 2009-2011. Created by serso aka se.solovyev.
+ * For more information, please, contact se.solovyev@gmail.com
+ */
+
+package org.solovyev.android.calculator;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.graphics.Color;
+import android.os.Build;
+import android.os.Handler;
+import android.preference.PreferenceManager;
+import android.text.Editable;
+import android.text.Html;
+import android.text.TextWatcher;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.view.ContextMenu;
+import android.widget.EditText;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.solovyev.android.calculator.text.TextProcessor;
+import org.solovyev.android.calculator.view.TextHighlighter;
+import org.solovyev.android.prefs.BooleanPreference;
+import org.solovyev.common.collections.CollectionsUtils;
+
+/**
+ * User: serso
+ * Date: 9/17/11
+ * Time: 12:25 AM
+ */
+public class AndroidCalculatorEditorView extends EditText implements SharedPreferences.OnSharedPreferenceChangeListener, CalculatorEditorView {
+
+    @NotNull
+    private static final BooleanPreference colorDisplay = new BooleanPreference("org.solovyev.android.calculator.CalculatorModel_color_display", true);
+
+    private volatile boolean initialized = false;
+
+    private boolean highlightText = true;
+
+    @NotNull
+    private final static TextProcessor<TextHighlighter.Result, String> textHighlighter = new TextHighlighter(Color.WHITE, false);
+
+    @NotNull
+    private volatile CalculatorEditorViewState viewState = CalculatorEditorViewStateImpl.newDefaultInstance();
+
+    private volatile boolean viewStateChange = false;
+
+    // NOTE: static because super constructor calls some overridden methods (like onSelectionChanged and current lock is not yet created)
+    @NotNull
+    private static final Object lock = new Object();
+
+    @NotNull
+    private final Handler uiHandler = new Handler();
+
+    public AndroidCalculatorEditorView(Context context) {
+        super(context);
+    }
+
+    public AndroidCalculatorEditorView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public AndroidCalculatorEditorView(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+    }
+
+    @Override
+    public boolean onCheckIsTextEditor() {
+        // NOTE: code below can be used carefully and should not be copied without special intention
+        // The main purpose of code is to disable soft input (virtual keyboard) but leave all the TextEdit functionality, like cursor, scrolling, copy/paste menu etc
+
+        if (Build.VERSION.SDK_INT >= 11) {
+            // fix for missing cursor in android 3 and higher
+            try {
+                // IDEA: return false always except if method was called from TextView.isCursorVisible() method
+                for (StackTraceElement stackTraceElement : CollectionsUtils.asList(Thread.currentThread().getStackTrace())) {
+                    if ("isCursorVisible".equals(stackTraceElement.getMethodName())) {
+                        return true;
+                    }
+                }
+            } catch (RuntimeException e) {
+                // just in case...
+            }
+
+            return false;
+        } else {
+            return false;
+        }
+    }
+
+    @Override
+    protected void onCreateContextMenu(ContextMenu menu) {
+        super.onCreateContextMenu(menu);
+
+        menu.removeItem(android.R.id.selectAll);
+    }
+
+    @Nullable
+    private CharSequence prepareText(@NotNull String text, boolean highlightText) {
+        CharSequence result;
+
+         if (highlightText) {
+
+             try {
+                 final TextHighlighter.Result processesText = textHighlighter.process(text);
+
+                 assert processesText.getOffset() == 0;
+
+                 result = Html.fromHtml(processesText.toString());
+             } catch (CalculatorParseException e) {
+                 // set raw text
+                 result = text;
+
+                 Log.e(this.getClass().getName(), e.getMessage(), e);
+             }
+         } else {
+             result = text;
+         }
+
+        return result;
+     }
+
+    public boolean isHighlightText() {
+        return highlightText;
+    }
+
+    public void setHighlightText(boolean highlightText) {
+        this.highlightText = highlightText;
+        CalculatorLocatorImpl.getInstance().getEditor().updateViewState();
+    }
+
+    @Override
+    public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
+        if (colorDisplay.getKey().equals(key)) {
+            this.setHighlightText(colorDisplay.getPreference(preferences));
+        }
+    }
+
+    public synchronized void init(@NotNull Context context) {
+        if (!initialized) {
+            final SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
+
+            preferences.registerOnSharedPreferenceChangeListener(this);
+
+            this.addTextChangedListener(new TextWatcherImpl());
+
+            onSharedPreferenceChanged(preferences, colorDisplay.getKey());
+
+            initialized = true;
+        }
+    }
+
+    @Override
+    public void setState(@NotNull final CalculatorEditorViewState viewState) {
+
+        final CharSequence text = prepareText(viewState.getText(), highlightText);
+
+        uiHandler.post(new Runnable() {
+            @Override
+            public void run() {
+                final AndroidCalculatorEditorView editorView = AndroidCalculatorEditorView.this;
+                synchronized (lock) {
+                    try {
+                        editorView.viewStateChange = true;
+                        editorView.viewState = viewState;
+                        editorView.setText(text, BufferType.EDITABLE);
+                        editorView.setSelection(viewState.getSelection());
+                    } finally {
+                        editorView.viewStateChange = false;
+                    }
+                }
+            }
+        });
+    }
+
+    @Override
+    protected void onSelectionChanged(int selStart, int selEnd) {
+        synchronized (lock) {
+            if (!viewStateChange) {
+                // external text change => need to notify editor
+                super.onSelectionChanged(selStart, selEnd);
+                CalculatorLocatorImpl.getInstance().getEditor().setSelection(selStart);
+            }
+        }
+    }
+
+    public void handleTextChange(Editable s) {
+        synchronized (lock) {
+            if (!viewStateChange) {
+                // external text change => need to notify editor
+                CalculatorLocatorImpl.getInstance().getEditor().setText(String.valueOf(s));
+            }
+        }
+    }
+
+    private final class TextWatcherImpl implements TextWatcher {
+
+        @Override
+        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+
+        }
+
+        @Override
+        public void onTextChanged(CharSequence s, int start, int before, int count) {
+        }
+
+        @Override
+        public void afterTextChanged(Editable s) {
+            handleTextChange(s);
+        }
+    }
+}

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

@@ -0,0 +1,31 @@
+package org.solovyev.android.calculator;
+
+import android.util.Log;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * User: serso
+ * Date: 10/11/12
+ * Time: 12:15 AM
+ */
+public class AndroidCalculatorLogger implements CalculatorLogger {
+
+    @NotNull
+    private static final String TAG = AndroidCalculatorLogger.class.getSimpleName();
+
+    @Override
+    public void debug(@Nullable String tag, @NotNull String message) {
+        Log.d(getTag(tag), message);
+    }
+
+    @NotNull
+    private String getTag(@Nullable String tag) {
+        return tag != null ? tag : TAG;
+    }
+
+    @Override
+    public void debug(@Nullable String tag, @NotNull String message, @NotNull Throwable e) {
+        Log.d(getTag(tag), message, e);
+    }
+}

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

@@ -86,7 +86,8 @@ public class CalculatorApplication extends android.app.Application {
                 new AndroidCalculatorEngine(this),
                 new AndroidCalculatorClipboard(this),
                 new AndroidCalculatorNotifier(this),
-                new AndroidCalculatorHistory(this, calculator));
+                new AndroidCalculatorHistory(this, calculator),
+                new AndroidCalculatorLogger());
 
         CalculatorLocatorImpl.getInstance().getCalculator().init();
 

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

@@ -75,17 +75,8 @@ public final class CalculatorButtons {
                 if (equalsButton != null) {
                     if (CalculatorPreferences.Gui.showEqualsButton.getPreference(preferences)) {
                         equalsButton.setVisibility(View.VISIBLE);
-                        final AndroidCalculatorDisplayView calculatorDisplayView = getCalculatorDisplayView();
-                        if (calculatorDisplayView != null) {
-                            calculatorDisplayView.setCompoundDrawablesWithIntrinsicBounds(null, null, null, null);
-                        }
                     } else {
                         equalsButton.setVisibility(View.GONE);
-                        // mobile phones
-                        final AndroidCalculatorDisplayView calculatorDisplayView = getCalculatorDisplayView();
-                        if (calculatorDisplayView != null) {
-                            calculatorDisplayView.setCompoundDrawablesWithIntrinsicBounds(activity.getResources().getDrawable(R.drawable.equals9), null, null, null);
-                        }
                     }
                 }
             }

calculatorpp/src/test/java/org/solovyev/android/calculator/CalculatorTestUtils.java

@@ -13,7 +13,7 @@ import org.solovyev.android.calculator.history.CalculatorHistory;
 public class CalculatorTestUtils {
 
     public static void staticSetUp() throws Exception {
-        CalculatorLocatorImpl.getInstance().init(new CalculatorImpl(), newCalculatorEngine(), Mockito.mock(CalculatorClipboard.class), Mockito.mock(CalculatorNotifier.class), Mockito.mock(CalculatorHistory.class));
+        CalculatorLocatorImpl.getInstance().init(new CalculatorImpl(), newCalculatorEngine(), Mockito.mock(CalculatorClipboard.class), Mockito.mock(CalculatorNotifier.class), Mockito.mock(CalculatorHistory.class), null);
         CalculatorLocatorImpl.getInstance().getEngine().init();
     }