public class DrawControlActivity extends Activity {
    /**
     * Dot diameter
     */
    final int LINE = 0;
    final int CIRCLE = 1;
    final int shape[] = {CIRCLE, LINE,};
    int mColorIndex = 0;
    int mShapeIndex = 0;
    Button mButtonSetColor;
    Button mButtonSetShape;
    Button mButtonDelLastShape;
    EditText editTextstartX;
    EditText editTextstartY;
    EditText editTextstopX;
    EditText editTextstopY;
    final Lines lines = new Lines();
    /**
     * The application view
     */
    LinesView linesView;

    /**
     * Called when the activity is first created.
     */
    @Override
    public void onCreate(Bundle state) {
        super.onCreate(state);
        mLinesChangeListenerSet();
        mViewSetup();
        mButtonsSet();
        mEditTextSet();
    }

    private void mViewSetup() {
        setContentView(R.layout.main);
        linesView = new LinesView(this, lines);
        ((LinearLayout) findViewById(R.id.root2)).addView(linesView);
    }

    private void mLinesChangeListenerSet() {
        lines.setLinesChangeListener(new Lines.LinesChangeListener() {
            public void onLinesChange(Lines lines) {
                Line localLine = lines.getLastLine();
                editTextstartX.setText((null == localLine) ? "" : String.valueOf(localLine.getStartX()));
                editTextstartY.setText((null == localLine) ? "" : String.valueOf(localLine.getStartY()));
                editTextstopX.setText((null == localLine) ? "" : String.valueOf(localLine.getStopX()));
                editTextstopY.setText((null == localLine) ? "" : String.valueOf(localLine.getStopY()));
            }
        });
    }

    private void mButtonsSet() {
        final int mLineColor[] = {Color.GREEN, Color.RED, Color.BLUE, Color.BLACK};
        mButtonSetColor = (Button) findViewById(R.id.button_lines_color);
        mButtonSetColor.setOnClickListener(
                new Button.OnClickListener() {
                    public void onClick(View v) {
                        setLinesColor(mLineColor[(mColorIndex) % mLineColor.length]);
                        mButtonSetColor.setTextColor(mLineColor[(mColorIndex++) % mLineColor.length]);
                    }
                });
        ((Button) findViewById(R.id.butoon_clear_screen)).setOnClickListener(
                new Button.OnClickListener() {
                    public void onClick(View v) {
                        viewScreenClean();
                    }
                });
        mButtonSetShape = (Button) findViewById(R.id.button_shape_set);
        mButtonSetShape.setOnClickListener(
                new Button.OnClickListener() {
                    public void onClick(View v) {
                        switch (shape[(mShapeIndex++) % shape.length]) {
                            case LINE:
                                mShapeSet(LINE);
                                mButtonSetShape.setText("Line");
                                break;
                            case CIRCLE:
                                mShapeSet(CIRCLE);
                                mButtonSetShape.setText("Circle");
                                break;
                        }
                    }
                });
        mButtonDelLastShape = (Button) findViewById(R.id.button_last_draw_del);
        mButtonDelLastShape.setOnClickListener(new Button.OnClickListener() {
            public void onClick(View v) {
                lastShapeDelete();
            }
        });
    }

    private void mEditTextSet() {
        editTextstartX = (EditText) findViewById(R.id.start_point_x);
        editTextstartY = (EditText) findViewById(R.id.start_point_y);
        editTextstopX = (EditText) findViewById(R.id.stop_point_x);
        editTextstopY = (EditText) findViewById(R.id.stop_point_y);
    }

    /* Callbacks' Service Methods */
    private void setLinesColor(int color) {
        linesView.mShapeColorSet(color);
    }

    private void viewScreenClean() {
        linesView.viewScreenClean();
    }

    private void lastShapeDelete() {
        linesView.lastShapeDelete();
    }

    private void mShapeSet(int shape) {
        switch (shape) {
            case LINE:
                linesView.mShapeSetLine();
                break;
            case CIRCLE:
                linesView.mShapeSetCircle();
                break;
        }
    }
}