support for symbolic computations

src/main/java/org/solovyev/android/msg/AndroidMessage.java

@@ -0,0 +1,33 @@
+/*
+ * 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.msg;
+
+import org.jetbrains.annotations.NotNull;
+import org.solovyev.common.msg.AbstractMessage;
+import org.solovyev.common.msg.MessageType;
+
+import java.util.List;
+
+/**
+ * User: serso
+ * Date: 10/18/11
+ * Time: 11:57 PM
+ */
+public class AndroidMessage extends AbstractMessage<Integer> {
+
+	public AndroidMessage(@NotNull Integer messageCode,
+							 @NotNull MessageType messageType,
+							 @org.jetbrains.annotations.Nullable Object... arguments) {
+		super(messageCode, messageType, arguments);
+	}
+
+	public AndroidMessage(@NotNull Integer messageCode,
+							 @NotNull MessageType messageType,
+							 @org.jetbrains.annotations.Nullable List<?> arguments) {
+		super(messageCode, messageType, arguments);
+	}
+}

src/main/java/org/solovyev/android/msg/AndroidMessageRegistry.java

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+/*
+ * 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.msg;
+
+import android.content.Context;
+import android.widget.Toast;
+import org.jetbrains.annotations.NotNull;
+import org.solovyev.common.msg.MessageRegistry;
+
+import java.util.Locale;
+
+/**
+ * User: serso
+ * Date: 10/18/11
+ * Time: 11:49 PM
+ */
+public enum AndroidMessageRegistry implements MessageRegistry<AndroidMessage> {
+
+	instance;
+
+	private Context context;
+
+	public void init(@NotNull Context context) {
+		this.context = context;
+	}
+
+	@Override
+	public void addMessage(@NotNull AndroidMessage message) {
+		if (context != null) {
+			Toast.makeText(context, formatMessage(message), Toast.LENGTH_SHORT).show();
+		}
+	}
+
+	@NotNull
+	@Override
+	public AndroidMessage getMessage() {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public boolean hasMessage() {
+		throw new UnsupportedOperationException();
+	}
+
+	@NotNull
+	public String formatMessage(@NotNull AndroidMessage message) {
+		final String messagePattern = context.getString(message.getMessageCode());
+
+		final String result;
+		if (messagePattern != null) {
+			result = message.formatMessage(messagePattern, Locale.getDefault());
+		} else {
+			result = "";
+		}
+
+		return result;
+	}
+
+	public void finish() {
+		this.context = null;
+	}
+}