operators activity added

AndroidManifest.xml

@@ -42,6 +42,11 @@
 				  a:configChanges="orientation|keyboardHidden">
 		</activity>
 
+		<activity a:name=".CalculatorOperatorsActivity"
+				  a:label="@string/c_operators"
+				  a:configChanges="orientation|keyboardHidden">
+		</activity>
+
 		<activity a:name=".CalculatorVarsActivity"
 				  a:label="@string/c_vars_and_constants"
 				  a:configChanges="orientation|keyboardHidden">

res/layout-land/main_calculator.xml

@@ -99,7 +99,7 @@
 			<include layout="@layout/calc_six_digit_button"/>
 			<include layout="@layout/calc_plus_button"/>
 			<include layout="@layout/calc_subtraction_button"/>
-			<include layout="@layout/calc_empty_button"/>
+			<include layout="@layout/calc_operators_button"/>
 
 		</LinearLayout>
 

res/layout/calc_operators_button.xml

@@ -0,0 +1,14 @@
+<?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
+  -->
+
+<org.solovyev.android.view.widgets.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
+													   a:id="@+id/functionsButton"
+													   a:text="∂,∫"
+													   a:textStyle="italic"
+													   a:onClick="operatorsButtonClickHandler"
+													   style="?controlButtonStyle"/>

res/layout/operators.xml

@@ -0,0 +1,20 @@
+<?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:layout_width="fill_parent"
+    a:layout_height="fill_parent">
+
+    <ListView
+        a:layout_width="fill_parent"
+        a:layout_height="fill_parent"
+        a:layout_weight="1"
+        a:id="@android:id/list"/>
+
+</LinearLayout>

res/values-ru/strings.xml

@@ -145,5 +145,6 @@
 
 	<string name="c_empty_var_error">Невозможно создать пустую константу!</string>
 	<string name="c_not_valid_result">Результат не допустим!</string>
+	<string name="c_operators">Операторы</string>
 
 </resources>

res/values/strings.xml

@@ -146,5 +146,6 @@
 
 	<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>
 
 </resources>

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

@@ -333,6 +333,11 @@ public class CalculatorActivity extends Activity implements FontSizeAdjuster, Sh
 		CalculatorActivityLauncher.showFunctions(this);
 	}
 
+	@SuppressWarnings({"UnusedDeclaration"})
+	public void operatorsButtonClickHandler(@NotNull View v) {
+		CalculatorActivityLauncher.showOperators(this);
+	}
+
 	@SuppressWarnings({"UnusedDeclaration"})
 	public void varsButtonClickHandler(@NotNull View v) {
 		CalculatorActivityLauncher.showVars(this);

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

@@ -29,6 +29,10 @@ public class CalculatorActivityLauncher {
 		context.startActivity(new Intent(context, CalculatorFunctionsActivity.class));
 	}
 
+	public static void showOperators(@NotNull final Context context) {
+		context.startActivity(new Intent(context, CalculatorOperatorsActivity.class));
+	}
+
 	public static void showVars(@NotNull final Context context) {
 		context.startActivity(new Intent(context, CalculatorVarsActivity.class));
 	}

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

@@ -265,6 +265,10 @@ public enum CalculatorModel implements CursorControl, HistoryControl<CalculatorH
 							textToBeInserted.append("()");
 							cursorPositionOffset = -1;
 							break;
+						case operator:
+							textToBeInserted.append("()");
+							cursorPositionOffset = -1;
+							break;
 					}
 
 					if (cursorPositionOffset == 0) {

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

@@ -0,0 +1,110 @@
+package org.solovyev.android.calculator;
+
+import android.app.ListActivity;
+import android.content.Context;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+import android.widget.ListView;
+import android.widget.TextView;
+import jscl.math.function.Function;
+import jscl.math.operator.Operator;
+import org.jetbrains.annotations.NotNull;
+import org.solovyev.android.calculator.model.CalculatorEngine;
+import org.solovyev.common.utils.StringUtils;
+
+import java.util.ArrayList;
+import java.util.Comparator;
+import java.util.List;
+
+/**
+ * User: serso
+ * Date: 11/17/11
+ * Time: 1:53 PM
+ */
+
+public class CalculatorOperatorsActivity extends ListActivity {
+
+	@NotNull
+	private OperatorsArrayAdapter adapter;
+
+	@Override
+	protected void onCreate(Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+
+		setContentView(R.layout.operators);
+
+		adapter = new OperatorsArrayAdapter(this, R.layout.var, R.id.var_text, new ArrayList<Operator>(CalculatorEngine.instance.getOperatorsRegistry().getEntities()));
+		setListAdapter(adapter);
+
+		final ListView lv = getListView();
+		lv.setTextFilterEnabled(true);
+
+		lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
+			public void onItemClick(final AdapterView<?> parent,
+									final View view,
+									final int position,
+									final long id) {
+
+				CalculatorModel.instance.processDigitButtonAction(((Operator) parent.getItemAtPosition(position)).getName(), false);
+
+				CalculatorOperatorsActivity.this.finish();
+			}
+		});
+
+		sort();
+
+	}
+
+	private void sort() {
+		CalculatorOperatorsActivity.this.adapter.sort(new Comparator<Operator>() {
+			@Override
+			public int compare(Operator operator1, Operator operator2) {
+				return operator1.getName().compareTo(operator2.getName());
+			}
+		});
+
+		CalculatorOperatorsActivity.this.adapter.notifyDataSetChanged();
+	}
+
+	private class OperatorsArrayAdapter extends ArrayAdapter<Operator> {
+
+		private OperatorsArrayAdapter(Context context, int resource, int textViewResourceId, List<Operator> objects) {
+			super(context, resource, textViewResourceId, objects);
+		}
+
+		@Override
+		public View getView(int position, View convertView, ViewGroup parent) {
+			final ViewGroup result = (ViewGroup) super.getView(position, convertView, parent);
+
+			final Operator operator = getItem(position);
+
+			final String operatorDescription = CalculatorEngine.instance.getOperatorsRegistry().getDescription(getContext(), operator.getName());
+			if (!StringUtils.isEmpty(operatorDescription)) {
+				TextView description = (TextView) result.findViewById(R.id.var_description);
+				if (description == null) {
+					final LayoutInflater layoutInflater = (LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);
+					final ViewGroup itemView = (ViewGroup) layoutInflater.inflate(R.layout.var, null);
+					description = (TextView) itemView.findViewById(R.id.var_description);
+					itemView.removeView(description);
+					result.addView(description);
+				}
+				description.setText(operatorDescription);
+			} else {
+				TextView description = (TextView) result.findViewById(R.id.var_description);
+				if (description != null) {
+					result.removeView(description);
+				}
+			}
+
+
+			return result;
+		}
+	}
+
+
+}
+

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

@@ -104,6 +104,7 @@ public class TextHighlighter implements TextProcessor<TextHighlighter.Result> {
 					numberOfOpenGroupSymbols--;
 					text1.append(text.charAt(i));
 					break;
+				case operator:
 				case function:
 					i = processHighlightedText(text1, i, mathType.getMatch(), "i");
 					break;

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

@@ -68,7 +68,7 @@ public enum MathType {
 	open_group_symbol(800, true, false, "[", "(", "{") {
 		@Override
 		public boolean isNeedMultiplicationSignBefore(@NotNull MathType mathTypeBefore) {
-			return super.isNeedMultiplicationSignBefore(mathTypeBefore) && mathTypeBefore != function;
+			return super.isNeedMultiplicationSignBefore(mathTypeBefore) && mathTypeBefore != function && mathTypeBefore != operator;
 		}
 
 		@Override
@@ -97,6 +97,14 @@ public enum MathType {
 		}
 	},
 
+	operator(1050, true, true) {
+		@NotNull
+		@Override
+		public List<String> getTokens() {
+			return CalculatorEngine.instance.getOperatorsRegistry().getNames();
+		}
+	},
+
 	constant(1100, true, true) {
 		@NotNull
 		@Override

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

@@ -10,6 +10,7 @@ import android.content.Context;
 import jscl.math.function.Function;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
+import org.solovyev.common.math.MathEntity;
 import org.solovyev.common.math.MathRegistry;
 
 /**
@@ -17,7 +18,7 @@ import org.solovyev.common.math.MathRegistry;
  * Date: 10/30/11
  * Time: 1:02 AM
  */
-public interface AndroidFunctionsRegistry extends MathRegistry<Function> {
+public interface AndroidMathRegistry<T extends MathEntity> extends MathRegistry<T> {
 
 	@Nullable
 	String getDescription(@NotNull Context context, @NotNull String functionName);

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

@@ -13,6 +13,7 @@ import org.jetbrains.annotations.Nullable;
 import org.solovyev.android.calculator.R;
 import org.solovyev.android.calculator.RClassUtils;
 import org.solovyev.common.definitions.IBuilder;
+import org.solovyev.common.math.MathEntity;
 import org.solovyev.common.math.MathRegistry;
 
 import java.util.List;
@@ -23,15 +24,15 @@ import java.util.Map;
  * Date: 10/30/11
  * Time: 1:03 AM
  */
-public class AndroidFunctionsRegistryImpl implements AndroidFunctionsRegistry {
+public class AndroidMathRegistryImpl<T extends MathEntity> implements AndroidMathRegistry<T> {
 
 	@NotNull
 	private static final String FUNCTION_DESCRIPTION_PREFIX = "c_fun_description_";
 
 	@NotNull
-	private final MathRegistry<Function> functionsRegistry;
+	private final MathRegistry<T> functionsRegistry;
 
-	public AndroidFunctionsRegistryImpl(@NotNull MathRegistry<Function> functionsRegistry) {
+	public AndroidMathRegistryImpl(@NotNull MathRegistry<T> functionsRegistry) {
 		this.functionsRegistry = functionsRegistry;
 	}
 
@@ -60,23 +61,23 @@ public class AndroidFunctionsRegistryImpl implements AndroidFunctionsRegistry {
 
 	@NotNull
 	@Override
-	public List<Function> getEntities() {
+	public List<T> getEntities() {
 		return functionsRegistry.getEntities();
 	}
 
 	@NotNull
 	@Override
-	public List<Function> getSystemEntities() {
+	public List<T> getSystemEntities() {
 		return functionsRegistry.getSystemEntities();
 	}
 
 	@Override
-	public Function add(@NotNull IBuilder<? extends Function> IBuilder) {
+	public T add(@NotNull IBuilder<? extends T> IBuilder) {
 		return functionsRegistry.add(IBuilder);
 	}
 
 	@Override
-	public void remove(@NotNull Function var) {
+	public void remove(@NotNull T var) {
 		functionsRegistry.remove(var);
 	}
 
@@ -92,12 +93,12 @@ public class AndroidFunctionsRegistryImpl implements AndroidFunctionsRegistry {
 	}
 
 	@Override
-	public Function get(@NotNull String name) {
+	public T get(@NotNull String name) {
 		return functionsRegistry.get(name);
 	}
 
 	@Override
-	public Function getById(@NotNull Integer id) {
+	public T getById(@NotNull Integer id) {
 		return functionsRegistry.getById(id);
 	}
 }

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

@@ -70,7 +70,10 @@ public enum CalculatorEngine {
 	private final AndroidVarsRegistry varsRegister = new AndroidVarsRegistryImpl(engine.getConstantsRegistry());
 
 	@NotNull
-	private final AndroidFunctionsRegistry functionsRegistry = new AndroidFunctionsRegistryImpl(engine.getFunctionsRegistry());
+	private final AndroidMathRegistry functionsRegistry = new AndroidMathRegistryImpl(engine.getFunctionsRegistry());
+
+	@NotNull
+	private final AndroidMathRegistry operatorsRegistry = new AndroidMathRegistryImpl(engine.getOperatorsRegistry());
 
 	private final MathRegistry<Operator> postfixFunctionsRegistry = engine.getPostfixFunctionsRegistry();
 
@@ -156,7 +159,7 @@ public enum CalculatorEngine {
 			sb.append(preparedExpression);
 
 			//Log.d(CalculatorEngine.class.getName(), "Preprocessed expression: " + preprocessedExpression);
-			if (operation == JsclOperation.numeric && preparedExpression.isExistsUndefinedVar()) {
+			/*if (operation == JsclOperation.numeric && preparedExpression.isExistsUndefinedVar()) {
 				operation = JsclOperation.simplify;
 
 				if (mr != null) {
@@ -169,7 +172,7 @@ public enum CalculatorEngine {
 
 					mr.addMessage(new AndroidMessage(R.string.c_simplify_instead_of_numeric, MessageType.info, undefinedVars));
 				}
-			}
+			}*/
 
 			final String jsclExpression = sb.toString();
 			final JsclOperation finalOperation = operation;
@@ -224,6 +227,9 @@ public enum CalculatorEngine {
 					}
 
 					if ( evalErrorLocal != null ) {
+						if ( finalOperation == JsclOperation.numeric && preparedExpression.isExistsUndefinedVar() ) {
+							return evaluate(JsclOperation.simplify, expression, mr);
+						}
 						throw evalErrorLocal;
 					}
 
@@ -301,10 +307,15 @@ public enum CalculatorEngine {
 	}
 
 	@NotNull
-	public AndroidFunctionsRegistry getFunctionsRegistry() {
+	public AndroidMathRegistry getFunctionsRegistry() {
 		return functionsRegistry;
 	}
 
+	@NotNull
+	public AndroidMathRegistry getOperatorsRegistry() {
+		return operatorsRegistry;
+	}
+
 	@NotNull
 	public MathRegistry<Operator> getPostfixFunctionsRegistry() {
 		return postfixFunctionsRegistry;

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

@@ -62,7 +62,7 @@ public class FromJsclSimplifyTextProcessor implements TextProcessor<String> {
 				}
 
 			} else {
-				if (mathType.getMathType() == MathType.constant || mathType.getMathType() == MathType.function) {
+				if (mathType.getMathType() == MathType.constant || mathType.getMathType() == MathType.function || mathType.getMathType() == MathType.operator) {
 					sb.append(mathType.getMatch());
 					i += mathType.getMatch().length() - 1;
 				} else {

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

@@ -54,7 +54,7 @@ class ToJsclTextProcessor implements TextProcessor<PreparedExpression> {
 				}
 			}
 
-			if (mathTypeBefore == MathType.function && CollectionsUtils.find(MathType.openGroupSymbols, startsWithFinder) != null) {
+			if ((mathTypeBefore == MathType.function || mathTypeBefore == MathType.operator) && CollectionsUtils.find(MathType.openGroupSymbols, startsWithFinder) != null) {
 				throw new ParseException("Empty function: " + mathTypeResult.getMatch());
 			}
 
@@ -80,28 +80,34 @@ class ToJsclTextProcessor implements TextProcessor<PreparedExpression> {
 			int offset = 0;
 			String functionName = CollectionsUtils.find(MathType.function.getTokens(), startsWithFinder);
 			if (functionName == null) {
-				String varName = CollectionsUtils.find(CalculatorEngine.instance.getVarsRegister().getNames(), startsWithFinder);
-				if (varName != null) {
-					final Var var = CalculatorEngine.instance.getVarsRegister().get(varName);
-					if (var != null) {
-						if (!var.isDefined()) {
-							undefinedVars.add(var);
-							result.append(varName);
-							offset = varName.length();
-						} else {
-							final String value = var.getValue();
-							assert value != null;
-
-							if ( var.getDoubleValue() != null ) {
-								//result.append(value);
-								// NOTE: append varName as JSCL engine will convert it to double if needed
+				String operatorName = CollectionsUtils.find(MathType.operator.getTokens(), startsWithFinder);
+				if (operatorName == null) {
+					String varName = CollectionsUtils.find(CalculatorEngine.instance.getVarsRegister().getNames(), startsWithFinder);
+					if (varName != null) {
+						final Var var = CalculatorEngine.instance.getVarsRegister().get(varName);
+						if (var != null) {
+							if (!var.isDefined()) {
+								undefinedVars.add(var);
 								result.append(varName);
+								offset = varName.length();
 							} else {
-								result.append("(").append(processWithDepth(value, depth, undefinedVars)).append(")");
+								final String value = var.getValue();
+								assert value != null;
+
+								if ( var.getDoubleValue() != null ) {
+									//result.append(value);
+									// NOTE: append varName as JSCL engine will convert it to double if needed
+									result.append(varName);
+								} else {
+									result.append("(").append(processWithDepth(value, depth, undefinedVars)).append(")");
+								}
+								offset = varName.length();
 							}
-							offset = varName.length();
 						}
 					}
+				} else {
+					result.append(operatorName);
+					offset = operatorName.length();
 				}
 			} else {
 				result.append(functionName);

src/test/java/org/solovyev/android/calculator/model/CalculatorEngineTest.java

@@ -113,7 +113,7 @@ public class CalculatorEngineTest {
 		junit.framework.Assert.assertEquals("36.0", Expression.valueOf("3!^2").numeric().toString());
 		junit.framework.Assert.assertEquals("3.0", Expression.valueOf("cubic(27)").numeric().toString());
 		try {
-			junit.framework.Assert.assertEquals("i", cm.evaluate(JsclOperation.numeric, "i!").getResult());
+			junit.framework.Assert.assertEquals("√(-1)!", cm.evaluate(JsclOperation.numeric, "i!").getResult());
 			fail();
 		} catch (ParseException e) {
 		}