Android Open Source - MATSOL-Android Main Window

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Back to project page MATSOL-Android.

License

The source code is released under:

GNU General Public License

Java Source Code

/*****************************
You may use, distribute and copy MATSOL for Android under the terms of GNU
General Public License version 3, which is displayed below.
******************************///  w ww.  j  a  va 2 s . c om

package gidaibero.android.matsol;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.app.ActionBar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MenuInflater;
import android.view.View;

// Dialog that lets the select user the size of the matrix
import gidaibero.android.matsol.MatrixDimensionPicker;
import android.app.Dialog;
import android.content.DialogInterface;
import android.app.DialogFragment;

//for debugging purposes only
import android.widget.Toast;

public class MainWindow extends Activity implements MatrixDimensionPicker.DialogListener
{

    public final static String MATRIX_TARGET = 
      "gidaibero.android.matsol.matrix_target";
    public final static String MATRIX_SIZE = 
      "gidaibero.android.matsol.matrix_size";
      
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
    }

    // Action bar methods
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {

        // Inflate the menu items for use in the action bar
        MenuInflater inflater = getMenuInflater();

        inflater.inflate(R.menu.main_activity_actions, menu);
        return super.onCreateOptionsMenu(menu);

    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        // Handle presses on the action bar items
        switch (item.getItemId()) {

            case R.id.action_about:

                openAbout();
                return true;

            default:
                return super.onOptionsItemSelected(item);

          }

    }

    /*
     * ===========================
     * Activity Transition methods
     * ---------------------------
     */

    /* openAbout method:
     *  a simple 0 argument callback for the about button, launches the
     *  about activity.
     */
    private boolean openAbout() {

        Intent intent = new Intent(this, About.class);

        startActivity(intent);
        return true;
    }
  
    /* showMatrixDimensionPicker
     *  the callback for the determinant and linear equation system,
     *  preparses information about the caller and displays a box to the user
     * requesting the size of the matrix to calculate
     */
    public void showMatrixDimensionPicker(View view) {

        DialogFragment dialog;
        int callerId = view.getId();

        // Should identify the caller
        if(callerId==R.id.matrix_button){

            dialog = new MatrixDimensionPicker(callerId,
               this.getString(R.string.matrix_size_message_picker_dialog));
            
            dialog.show(getFragmentManager(), "matrix_size_dialog");

        } else {

            dialog = new MatrixDimensionPicker(callerId,
                this.getString(R.string.determinant_message_picker_dialog));
            dialog.show(getFragmentManager(), "determinant_size_dialog");

        }
          // TODO Should create intent information and pass it to the dialog
          
          // Should display the dialog
    }
  
    /* pushBaseConverterActivity method
     *
     * shows the base converter activity, this doesn't need any special
     * wrapping
     */
    public void pushBaseConverterActivity(View view) {

        // TODO: show something else instead of the About class.
        Intent intent = new Intent(this, BaseConverterActivity.class);

        startActivity(intent);

    } 


    /*
     * ==================================
     * Dialog fragment callbacks
     * ---------------------------------
     */

    @Override
    public void onDialogPositiveClick(DialogFragment dialog) {

          // User touched the dialog's positive button
          if(dialog instanceof MatrixDimensionPicker){

                MatrixDimensionPicker matrix_dialog =
                    (MatrixDimensionPicker)dialog;

                int target = matrix_dialog.getTarget();

                Intent intent = new Intent(this,  MatrixInputActivity.class);

                // bundle the id number of the button that caused it as the
                // selected operation
                intent.putExtra(MATRIX_TARGET, target + "");

                // bundle the size of the matrix
                intent.putExtra(MATRIX_SIZE, matrix_dialog.getSize() + "");
                startActivity(intent);

          }
    }
    
    @Override
    public void onDialogNegativeClick(DialogFragment dialog) {

      // User touched the dialog's negative button
      
    }
}

Java Source Code List

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