de.tavendo.autobahn.simplerpc.SimpleRpcActivity.java Source code

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Here is the source code for de.tavendo.autobahn.simplerpc.SimpleRpcActivity.java

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/******************************************************************************
 *
 *  Copyright 2011 Tavendo GmbH
 *
 *  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.
 *
 ******************************************************************************/

package de.tavendo.autobahn.simplerpc;

import java.util.ArrayList;
import java.util.List;

import org.apache.http.message.BasicNameValuePair;

import android.app.Activity;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import de.tavendo.autobahn.Wamp;
import de.tavendo.autobahn.WampConnection;
import de.tavendo.autobahn.WampOptions;

public class SimpleRpcActivity extends Activity {

    @SuppressWarnings("unused")
    private static final String TAG = "de.tavendo.autobahn.simplerpc";

    private static final String PREFS_NAME = "AutobahnAndroidSimpleRpc";

    private SharedPreferences mSettings;

    private static EditText mHostname;
    private static EditText mPort;
    private static TextView mStatusline;
    private static Button mStart;

    private void alert(String message) {
        Toast.makeText(getApplicationContext(), message, Toast.LENGTH_SHORT).show();
    }

    private void loadPrefs() {

        mHostname.setText(mSettings.getString("hostname", "192.168.1.124"));
        mPort.setText(mSettings.getString("port", "3000"));
    }

    private void savePrefs() {

        SharedPreferences.Editor editor = mSettings.edit();
        editor.putString("hostname", mHostname.getText().toString());
        editor.putString("port", mPort.getText().toString());
        editor.commit();
    }

    private void setButtonConnect() {
        mStart.setText("Connect");
        mStart.setOnClickListener(new Button.OnClickListener() {
            public void onClick(View v) {
                test();
            }
        });
    }

    private void setButtonDisconnect() {
        mStart.setText("Disconnect");
        mStart.setOnClickListener(new Button.OnClickListener() {
            public void onClick(View v) {
                mConnection.disconnect();
            }
        });
    }

    private final Wamp mConnection = new WampConnection();

    private void test() {

        final String wsuri = "ws://" + mHostname.getText() + ":" + mPort.getText();

        mStatusline.setText("Connecting to\n" + wsuri + " ..");

        setButtonDisconnect();

        // we establish a connection by giving the WebSockets URL of the server
        // and the handler for open/close events

        WampOptions options;
        List<BasicNameValuePair> headers = new ArrayList<BasicNameValuePair>();
        BasicNameValuePair b;
        headers.add(new BasicNameValuePair("Origin", "http://192.168.1.124:88"));
        headers.add(new BasicNameValuePair("connection", "keep-alive"));
        headers.add(new BasicNameValuePair("Accept", "*/*"));
        mConnection.connect(wsuri, new Wamp.ConnectionHandler() {

            @Override
            public void onOpen() {

                // The connection was successfully established. we set the status
                // and save the host/port as Android application preference for next time.
                mStatusline.setText("Connected to\n" + wsuri);
                savePrefs();

                // We establish a prefix to use for writing URIs using shorthand CURIE notation.
                mConnection.prefix("calc", "http://example.com/simple/calc#");

                testRpc();
            }

            @Override
            public void onClose(int code, String reason) {

                // The connection was closed. Set the status line, show a message box,
                // and set the button to allow to connect again.
                mStatusline.setText("Connection closed.");
                alert(reason);
                setButtonConnect();
            }
        }, headers);
    }

    private void testRpc() {

        ArrayList<Integer> nums = new ArrayList<Integer>();
        for (int i = 0; i < 10; ++i)
            nums.add(i);

        mConnection.call("calc:asum", Integer.class, new Wamp.CallHandler() {

            @Override
            public void onResult(Object result) {
                int res = (Integer) result;
                alert("calc:asum result = " + res);
            }

            @Override
            public void onError(String errorId, String errorInfo) {
                alert("calc:asum RPC error - " + errorInfo);
            }
        }, nums);

        mConnection.call("calc:add", Integer.class, new Wamp.CallHandler() {

            @Override
            public void onResult(Object result) {
                int res = (Integer) result;
                alert("calc:add result = " + res);
            }

            @Override
            public void onError(String errorId, String errorInfo) {
                alert("calc:add RPC error - " + errorInfo);
            }
        }, 23, 55);
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        mHostname = (EditText) findViewById(R.id.hostname);
        mPort = (EditText) findViewById(R.id.port);
        mStatusline = (TextView) findViewById(R.id.statusline);
        mStart = (Button) findViewById(R.id.start);

        mSettings = getSharedPreferences(PREFS_NAME, 0);
        loadPrefs();

        setButtonConnect();
    }
}