WebkitActivity.java

package edu.northwestern.cbits.purple_robot_manager.activities;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.Charset;
import java.text.SimpleDateFormat;
import java.util.Date;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.webkit.ConsoleMessage;
import android.webkit.JavascriptInterface;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import edu.northwestern.cbits.purple_robot_manager.R;
import edu.northwestern.cbits.purple_robot_manager.logging.LogManager;
import edu.northwestern.cbits.purple_robot_manager.probes.Probe;
import edu.northwestern.cbits.purple_robot_manager.probes.ProbeManager;

@SuppressLint("SimpleDateFormat")
public class WebkitActivity extends AppCompatActivity
{
    private double _selectedTimestamp = 0;
    private boolean _inited = false;

    public static String stringForAsset(Activity activity, String assetName) throws IOException
    {
        InputStream is = activity.getAssets().open(assetName);

        BufferedReader br = new BufferedReader(new InputStreamReader(is, Charset.forName("UTF-8")));

        StringBuilder sb = new StringBuilder();
        String line = null;

        while ((line = br.readLine()) != null)
        {
            sb.append(line + "\n");
        }

        return sb.toString();
    }

    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);

        this.setContentView(R.layout.layout_webkit_activity);
    }

    protected String contentString()
    {
        try
        {
            String name = this.getIntent().getStringExtra("probe_name");

            if (name != null)
            {
                Probe p = ProbeManager.probeForName(name, this);

                String content = p.getDisplayContent(this);

                if (content != null)
                    return content;
            }

            return WebkitActivity.stringForAsset(this, "webkit/webview.html");
        }
        catch (IOException e)
        {
            LogManager.getInstance(this).logException(e);
        }

        return null;
    }

    @JavascriptInterface
    public void setValue(String key, String value)
    {
        if (key.equals("timestamp"))
        {
            this._selectedTimestamp = Double.parseDouble(value);

            final Date d = new Date((long) this._selectedTimestamp);

            final SimpleDateFormat sdf = new SimpleDateFormat("hh:mm:ss, MMM d");

            final WebkitActivity me = this;

            this.runOnUiThread(new Runnable()
            {
                public void run()
                {
                    ActionBar actionBar = me.getSupportActionBar();

                    actionBar.setSubtitle(String.format(me.getString(R.string.display_date_item_count), sdf.format(d),
                            me.contentSubtitle()));
                }
            });
        }
    }

    protected void onResume()
    {
        super.onResume();

        this.refresh();
    }

    @SuppressLint({"SetJavaScriptEnabled", "AddJavascriptInterface"})
    private void refresh()
    {
        WebView webview = (WebView) this.findViewById(R.id.webview);

        webview.setWebChromeClient(new WebChromeClient()
        {
            public boolean onConsoleMessage(ConsoleMessage cm)
            {
                Log.e("PR", cm.message() + " -- From line " + cm.lineNumber() + " of " + cm.sourceId());
                return true;
            }
        });

        if (this._inited == false)
        {
            webview.addJavascriptInterface(this, "PurpleRobot");

            this._inited = true;
        }

        String contentString = this.contentString();

        if (contentString != null)
        {
            webview.getSettings().setJavaScriptEnabled(true);
            webview.loadDataWithBaseURL("file:///android_asset/webkit/", contentString, "text/html", "UTF-8", null);

            String title = this.contentTitle();
            String subtitle = this.contentSubtitle();

            ActionBar actionBar = this.getSupportActionBar();

            actionBar.setTitle(title);
            actionBar.setSubtitle(subtitle);
        }
        else
        {
            Intent dataIntent = new Intent(this, LegacyProbeViewerActivity.class);

            if (Build.VERSION.SDK_INT > Build.VERSION_CODES.HONEYCOMB)
                dataIntent = new Intent(this, ProbeViewerActivity.class);

            dataIntent.putExtra("probe_name", this.getIntent().getStringExtra("probe_name"));
            dataIntent.putExtra("probe_bundle", this.getIntent().getParcelableExtra("probe_bundle"));

            this.startActivity(dataIntent);

            this.finish();
        }
    }

    protected String contentSubtitle()
    {
        String name = this.getIntent().getStringExtra("probe_name");

        if (name != null)
        {
            Probe p = ProbeManager.probeForName(name, this);

            return p.contentSubtitle(this);
        }

        return null;
    }

    protected String contentTitle()
    {
        String name = this.getIntent().getStringExtra("probe_name");

        if (name != null)
        {
            Probe p = ProbeManager.probeForName(name, this);

            return p.title(this);
        }

        return this.getString(R.string.app_name);
    }

    public boolean onCreateOptionsMenu(Menu menu)
    {
        MenuInflater inflater = this.getMenuInflater();
        inflater.inflate(R.menu.menu_probe_activity, menu);

        return true;
    }

    public boolean onOptionsItemSelected(MenuItem item)
    {
        if (item.getItemId() == R.id.menu_data_item)
        {
            Intent dataIntent = new Intent(this, LegacyProbeViewerActivity.class);

            if (Build.VERSION.SDK_INT > Build.VERSION_CODES.HONEYCOMB)
                dataIntent = new Intent(this, ProbeViewerActivity.class);

            dataIntent.putExtra("probe_name", this.getIntent().getStringExtra("probe_name"));
            dataIntent.putExtra("probe_bundle", this.getIntent().getParcelableExtra("probe_bundle"));

            this.startActivity(dataIntent);

            /*
             * case R.id.menu_new_label: if (this._selectedTimestamp == 0) {
             * FragmentManager manager = this.getSupportFragmentManager();
             * 
             * final WebkitActivity me = this;
             * 
             * DialogFragment dialog = new DialogFragment() { public Dialog
             * onCreateDialog(Bundle savedInstanceState) { AlertDialog.Builder
             * builder = new AlertDialog.Builder(me);
             * builder.setTitle(R.string.title_missing_timestamp);
             * builder.setMessage(R.string.message_missing_timestamp);
             * builder.setPositiveButton(R.string.button_ok, new
             * OnClickListener() { public void onClick(DialogInterface dialog,
             * int arg) {
             * 
             * } });
             * 
             * return builder.create(); } };
             * 
             * dialog.show(manager, "label_missing"); } else {
             * 
             * Intent labelIntent = new Intent(this, LabelActivity.class);
             * labelIntent.putExtra(LabelActivity.TIMESTAMP,
             * this._selectedTimestamp);
             * labelIntent.putExtra(LabelActivity.LABEL_CONTEXT,
             * this.getIntent().getStringExtra("probe_name"));
             * 
             * this.startActivity(labelIntent); }
             * 
             * break;
             * 
             * case R.id.menu_refresh: this.refresh();
             * 
             * break;
             */
        }

        return true;
    }
}