changes

res/layout/calc_division_button.xml

@@ -8,8 +8,10 @@
 
 <org.solovyev.android.view.widgets.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
 													   xmlns:calc="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
-													   a:id="@+id/divisionButton" a:text="/"
+													   a:id="@+id/divisionButton"
-													   calc:textUp="√"
+													   calc:textUp="%"
+													   a:text="/"
+													   calc:textDown="√"
 													   calc:directionTextScale="0.5"
 													   style="?digitButtonStyle"
 													   a:onClick="digitButtonClickHandler"/>

res/layout/calc_functions_button.xml

@@ -7,6 +7,7 @@
   -->
 
 <org.solovyev.android.view.widgets.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
+													   xmlns:calc="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
 													   a:id="@+id/functionsButton"
 													   a:text="ƒ(x)"
 													   a:textStyle="italic"

res/layout/calc_operators_button.xml

@@ -8,6 +8,6 @@
 
 <org.solovyev.android.view.widgets.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
 													   a:id="@+id/functionsButton"
-													   a:text="∂,∫"
+													   a:text="∂,…"
 													   a:onClick="operatorsButtonClickHandler"
 													   style="?controlButtonStyle"/>

res/layout/calc_subtraction_button.xml

@@ -8,7 +8,7 @@
 <org.solovyev.android.view.widgets.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
 													   xmlns:calc="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
 													   a:id="@+id/subtractionButton"
-													   calc:textUp="%"
+													   calc:textDown="∂,…"
 													   a:text="-"
 													   calc:directionTextScale="0.5"
 													   style="?digitButtonStyle"

res/values-ru/strings.xml

@@ -147,4 +147,11 @@
 	<string name="c_not_valid_result">Результат не допустим!</string>
 	<string name="c_operators">Операторы</string>
 
+	<string name="c_op_description_mod">Возвращает остаток от деления \'x\' на \'y\'.</string>
+	<string name="c_op_description_sum">Суммирует функции \'f(i)\', пробегая по переменной \'i\' от \'from\' до \'to\'.</string>
+	<string name="c_op_description_product">Возвращает произведение функций \'f(i)\', пробегая по переменной \'i\' от \'from\' до \'to\'.</string>
+	<string name="c_op_description_derivative">Возвращает производную порядка \'order\' функции \'f(x)\' по переменной \'x\' и вычисляет её в точке \'x_point\'.</string>
+	<string name="c_op_description_integral">Возвращает интеграл функции \'f(x)\' по переменно \'x\'.</string>
+	<string name="c_op_description_integral_ab">Интегрирует функцию \'f(x)\' по переменной \'x\' от \'a\' до \'b\'.</string>
+
 </resources>

res/values/strings.xml

@@ -140,12 +140,20 @@
 	<string name="c_fun_description_ne">Not-equals function - gives 1 if two arguments are not equals, 0 otherwise.</string>
 	<string name="c_fun_description_lt">Lesser function - gives 1 if first argument is less than second, 0 otherwise.</string>
 	<string name="c_fun_description_gt">Greater function - gives 1 if first argument is greater than second, 0 otherwise.</string>
-	<string name="c_fun_description_rad">Converts degrees into radians: d - degrees, m - minutes (default = 0), s - seconds (default = 0) </string>
+	<string name="c_fun_description_rad">Converts degrees into radians: d - degrees, m - minutes (default = 0), s - seconds (default = 0).</string>
-	<string name="c_fun_description_dms">Converts degrees from DMS notation to decimal notation: d - degrees, m - minutes (default = 0), s - seconds (default = 0) </string>
+	<string name="c_fun_description_dms">Converts degrees from DMS notation to decimal notation: d - degrees, m - minutes (default = 0), s - seconds (default = 0).</string>
 	<string name="c_fun_description_deg">Converts radians into degrees.</string>
 
 	<string name="c_empty_var_error">Unable to create empty constant!</string>
 	<string name="c_not_valid_result">Current result is not valid!</string>
 	<string name="c_operators">Operators</string>
 
+	<string name="c_op_description_mod">Modulo operation finds the remainder of division of \'x\' by \'y\'.</string>
+	<string name="c_op_description_sum">Sums functions \'f(i)\', iterating through \'i\' from \'from\' to \'to\'.</string>
+	<string name="c_op_description_product">Gives product of functions \'f(i)\', iterating through \'i\' from \'from\' to \'to\'.</string>
+	<string name="c_op_description_derivative">Gives derivative of order \'order\' of functions \'f(x)\' by \'x\' variable and calculates at point \'x_point\'.</string>
+	<string name="c_op_description_integral">Gives integral of function \'f(x)\' by \'x\' variable.</string>
+	<string name="c_op_description_integral_ab">Integrates function \'f(x)\' by \'x\' variable from \'a\' to \'b\'.</string>
+
+
 </resources>

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

@@ -96,6 +96,18 @@ public class CalculatorActivity extends Activity implements FontSizeAdjuster, Sh
 		final OnDragListener historyOnDragListener = new OnDragListenerVibrator(newOnDragListener(new HistoryDragProcessor<CalculatorHistoryState>(this.calculatorModel), dragPreferences), vibrator, preferences);
 		((DragButton) findViewById(R.id.historyButton)).setOnDragListener(historyOnDragListener);
 
+		((DragButton) findViewById(R.id.subtractionButton)).setOnDragListener(new OnDragListenerVibrator(newOnDragListener(new SimpleOnDragListener.DragProcessor() {
+			@Override
+			public boolean processDragEvent(@NotNull DragDirection dragDirection, @NotNull DragButton dragButton, @NotNull Point2d startPoint2d, @NotNull MotionEvent motionEvent) {
+				if (dragDirection == DragDirection.down) {
+					operatorsButtonClickHandler(dragButton);
+					return true;
+				}
+				return false;
+			}
+		}, dragPreferences), vibrator, preferences));
+
+
 		final OnDragListener toPositionOnDragListener = new OnDragListenerVibrator(new SimpleOnDragListener(new CursorDragProcessor(calculatorModel), dragPreferences), vibrator, preferences);
 		((DragButton) findViewById(R.id.rightButton)).setOnDragListener(toPositionOnDragListener);
 		((DragButton) findViewById(R.id.leftButton)).setOnDragListener(toPositionOnDragListener);

src/main/java/org/solovyev/android/calculator/CalculatorModel.java

@@ -269,6 +269,9 @@ public enum CalculatorModel implements CursorControl, HistoryControl<CalculatorH
 							textToBeInserted.append("()");
 							cursorPositionOffset = -1;
 							break;
+						case comma:
+							textToBeInserted.append(" ");
+							break;
 					}
 
 					if (cursorPositionOffset == 0) {

src/main/java/org/solovyev/android/calculator/math/MathType.java

@@ -118,6 +118,8 @@ public enum MathType {
 		}
 	},
 
+	comma(1150, false, false, ","),
+
 	text(1200, false, false) {
 		@Override
 		public int processToJscl(@NotNull StringBuilder result, int i, @NotNull String match) {

src/main/java/org/solovyev/android/calculator/model/AndroidFunctionsMathRegistry.java

@@ -0,0 +1,41 @@
+/*
+ * 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
+ */
+
+package org.solovyev.android.calculator.model;
+
+import org.jetbrains.annotations.NotNull;
+import org.solovyev.common.math.MathEntity;
+import org.solovyev.common.math.MathRegistry;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * User: serso
+ * Date: 11/17/11
+ * Time: 11:28 PM
+ */
+public class AndroidFunctionsMathRegistry<T extends MathEntity> extends AndroidMathRegistryImpl<T> {
+
+	@NotNull
+	private static final Map<String, String> substitutes = new HashMap<String, String>();
+	static {
+		substitutes.put("√", "sqrt");
+	}
+
+	@NotNull
+	private static final String FUNCTION_DESCRIPTION_PREFIX = "c_fun_description_";
+
+	public AndroidFunctionsMathRegistry(@NotNull MathRegistry<T> functionsRegistry) {
+		super(functionsRegistry, FUNCTION_DESCRIPTION_PREFIX);
+	}
+
+	@NotNull
+	@Override
+	protected Map<String, String> getSubstitutes() {
+		return substitutes;
+	}
+}

src/main/java/org/solovyev/android/calculator/model/AndroidMathRegistryImpl.java

@@ -7,7 +7,6 @@
 package org.solovyev.android.calculator.model;
 
 import android.content.Context;
-import jscl.math.function.Function;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.solovyev.android.calculator.R;
@@ -24,32 +23,40 @@ import java.util.Map;
  * Date: 10/30/11
  * Time: 1:03 AM
  */
-public class AndroidMathRegistryImpl<T extends MathEntity> implements AndroidMathRegistry<T> {
+public abstract class AndroidMathRegistryImpl<T extends MathEntity> implements AndroidMathRegistry<T> {
-
-	@NotNull
-	private static final String FUNCTION_DESCRIPTION_PREFIX = "c_fun_description_";
 
 	@NotNull
 	private final MathRegistry<T> functionsRegistry;
 
-	public AndroidMathRegistryImpl(@NotNull MathRegistry<T> functionsRegistry) {
+	@NotNull
+	private final String prefix;
+
+	protected AndroidMathRegistryImpl(@NotNull MathRegistry<T> functionsRegistry, @NotNull String prefix) {
 		this.functionsRegistry = functionsRegistry;
+		this.prefix = prefix;
 	}
 
+	@NotNull
+	protected abstract Map<String, String> getSubstitutes();
+
 	@Nullable
 	@Override
-	public String getDescription(@NotNull Context context, @NotNull String functionName) {
+	public String getDescription(@NotNull Context context, @NotNull String name) {
 		final String result;
 
 		final Map<String, Integer> stringsCache = RClassUtils.getCache(R.string.class);
 
 		final Integer stringId;
-		if (!functionName.equals("√")) {
+
-			stringId = stringsCache.get(FUNCTION_DESCRIPTION_PREFIX + functionName);
+		final Map<String, String> substitutes = getSubstitutes();
+		final String substitute = substitutes.get(name);
+		if (substitute == null) {
+			stringId = stringsCache.get(prefix + name);
 		} else {
 			// todo serso: think
-			stringId = stringsCache.get(FUNCTION_DESCRIPTION_PREFIX + "sqrt");
+			stringId = stringsCache.get(prefix + substitute);
 		}
+
 		if (stringId != null) {
 			result = context.getString(stringId);
 		} else {

src/main/java/org/solovyev/android/calculator/model/AndroidOperatorsMathRegistry.java

@@ -0,0 +1,46 @@
+/*
+ * 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
+ */
+
+package org.solovyev.android.calculator.model;
+
+import org.jetbrains.annotations.NotNull;
+import org.solovyev.common.math.MathEntity;
+import org.solovyev.common.math.MathRegistry;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * User: serso
+ * Date: 11/17/11
+ * Time: 11:29 PM
+ */
+public class AndroidOperatorsMathRegistry<T extends MathEntity> extends AndroidMathRegistryImpl<T> {
+
+	@NotNull
+	private static final Map<String, String> substitutes = new HashMap<String, String>();
+	static {
+		substitutes.put("Σ", "sum");
+		substitutes.put("∏", "product");
+		substitutes.put("∂", "derivative");
+		substitutes.put("∫ab", "integral_ab");
+		substitutes.put("∫", "integral");
+		substitutes.put("Σ", "sum");
+	}
+
+	@NotNull
+	private static final String OPERATOR_DESCRIPTION_PREFIX = "c_op_description_";
+
+	protected AndroidOperatorsMathRegistry(@NotNull MathRegistry<T> functionsRegistry) {
+		super(functionsRegistry, OPERATOR_DESCRIPTION_PREFIX);
+	}
+
+	@NotNull
+	@Override
+	protected Map<String, String> getSubstitutes() {
+		return substitutes;
+	}
+}

src/main/java/org/solovyev/android/calculator/model/CalculatorEngine.java

@@ -13,24 +13,18 @@ import jscl.math.operator.Operator;
 import jscl.text.ParseInterruptedException;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
-import org.solovyev.android.calculator.R;
 import org.solovyev.android.calculator.jscl.JsclOperation;
 import org.solovyev.android.msg.AndroidMessage;
 import org.solovyev.common.NumberMapper;
 import org.solovyev.common.math.MathRegistry;
 import org.solovyev.common.msg.MessageRegistry;
-import org.solovyev.common.msg.MessageType;
-import org.solovyev.common.utils.CollectionsUtils;
-import org.solovyev.common.utils.Formatter;
 import org.solovyev.common.utils.MutableObject;
 import org.solovyev.common.utils.StringUtils;
 
 import java.math.BigDecimal;
 import java.text.DecimalFormat;
 import java.text.DecimalFormatSymbols;
-import java.util.HashSet;
 import java.util.Locale;
-import java.util.Set;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 
@@ -70,18 +64,16 @@ public enum CalculatorEngine {
 	private final AndroidVarsRegistry varsRegister = new AndroidVarsRegistryImpl(engine.getConstantsRegistry());
 
 	@NotNull
-	private final AndroidMathRegistry functionsRegistry = new AndroidMathRegistryImpl(engine.getFunctionsRegistry());
+	private final AndroidMathRegistry functionsRegistry = new AndroidFunctionsMathRegistry(engine.getFunctionsRegistry());
 
 	@NotNull
-	private final AndroidMathRegistry operatorsRegistry = new AndroidMathRegistryImpl(engine.getOperatorsRegistry());
+	private final AndroidMathRegistry operatorsRegistry = new AndroidOperatorsMathRegistry(engine.getOperatorsRegistry());
 
 	private final MathRegistry<Operator> postfixFunctionsRegistry = engine.getPostfixFunctionsRegistry();
 
-	@NotNull
-	private final static Set<String> tooLongExecutionCache = new HashSet<String>();
-
 	@NotNull
 	private DecimalFormatSymbols decimalGroupSymbols = new DecimalFormatSymbols(Locale.getDefault());
+
 	{
 		decimalGroupSymbols.setDecimalSeparator('.');
 		decimalGroupSymbols.setGroupingSeparator(GROUPING_SEPARATOR_DEFAULT.charAt(0));
@@ -106,7 +98,7 @@ public enum CalculatorEngine {
 			final DecimalFormat df = new DecimalFormat();
 			df.setDecimalFormatSymbols(decimalGroupSymbols);
 			df.setGroupingUsed(useGroupingSeparator);
-			if (round ) {
+			if (round) {
 				if (isRoundResult()) {
 					df.setMaximumFractionDigits(instance.getPrecision());
 					return df.format(new BigDecimal(value).setScale(instance.getPrecision(), BigDecimal.ROUND_HALF_UP).doubleValue());
@@ -178,7 +170,6 @@ public enum CalculatorEngine {
 			final JsclOperation finalOperation = operation;
 
 			final String result;
-			if (!tooLongExecutionCache.contains(jsclExpression)) {
 			final MutableObject<String> calculationResult = new MutableObject<String>(null);
 			final MutableObject<ParseException> exception = new MutableObject<ParseException>(null);
 			final MutableObject<Thread> calculationThread = new MutableObject<Thread>(null);
@@ -226,15 +217,14 @@ public enum CalculatorEngine {
 					//calculationThreadLocal.stop();
 				}
 
-					if ( evalErrorLocal != null ) {
+				if (evalErrorLocal != null) {
-						if ( finalOperation == JsclOperation.numeric && preparedExpression.isExistsUndefinedVar() ) {
+					if (finalOperation == JsclOperation.numeric && preparedExpression.isExistsUndefinedVar()) {
 						return evaluate(JsclOperation.simplify, expression, mr);
 					}
 					throw evalErrorLocal;
 				}
 
-					if ( calculationResultLocal == null ) {
+				if (calculationResultLocal == null) {
-						tooLongExecutionCache.add(jsclExpression);
 					throw new ParseException("Too long calculation for: " + jsclExpression);
 				}
 
@@ -243,9 +233,6 @@ public enum CalculatorEngine {
 			}
 
 			result = String.valueOf(calculationResult.getObject()).trim();
-			} else {
-				throw new ParseException("Too long calculation for: " + jsclExpression);
-			}
 
 			return new Result(operation.getFromProcessor().process(result), operation);
 		}
@@ -330,6 +317,7 @@ public enum CalculatorEngine {
 	void setTimeout(int timeout) {
 		this.timeout = timeout;
 	}
+
 	// for tests only
 	void setThreadKiller(@NotNull ThreadKiller threadKiller) {
 		this.threadKiller = threadKiller;