Android Open Source - MVC Main View

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License

The source code is released under:

Apache License

Java Source Code

package com.musselwhizzle.mvc.views;
//  www.  ja v a 2  s  .  co  m
import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;

import com.musselwhizzle.mvc.R;
import com.musselwhizzle.mvc.events.Event;
import com.musselwhizzle.mvc.events.EventListener;
import com.musselwhizzle.mvc.models.AppModel;
import com.musselwhizzle.mvc.widgets.Digit;
import com.musselwhizzle.mvc.widgets.DigitObjectPool;

public class MainView extends LinearLayout {

    /**
     * The interface to send events from the view to the controller
     */
    public static interface ViewListener {
        public void onToggleTimer();
        public void onAddTime(long amountToAdd);
    }

    private static boolean DEBUG = false;
    private static final String TAG = MainView.class.getSimpleName();
    private static final long AMOUNT_TO_ADD = 1234 * 60 * 2;
    private Digit d1, d2, d3, d4, d5;
    private Button toggleBtn, addBtn;
    private AppModel model;

    /**
     * The listener reference for sending events
     */
    private ViewListener viewListener;
    public void setViewListener(ViewListener viewListener) {
        this.viewListener = viewListener;
    }

    /**
     * Constructor for xml layouts
     */
    public MainView(Context context, AttributeSet attrs) {
        super(context, attrs);
        model = AppModel.getInstance();
    }

    /**
     * Exposed method so the controller can set the button state.
     */
    public void setPausedState(boolean isTimerRunning) {
        String txt = (isTimerRunning) ? getContext().getString(R.string.stop) : getContext().getString(R.string.start);
        toggleBtn.setText(txt);
    }

    /**
     * Remove the listener from the model
     */
    public void destroy() {
        model.removeListener(AppModel.ChangeEvent.ELAPSED_TIME_CHANGED, elapsedTimeListener);
    }

    /**
     * Does the work to update the view when the model changes.
     */
    private void bind() {
        int milli = (int)Math.floor((model.getElapsedTime() % 1000));
        int secs = (int)Math.floor((model.getElapsedTime() / 1000) % 60);
        int mins = (int)Math.floor((model.getElapsedTime() / 1000 / 60) % 60);

        if (DEBUG) {
            Log.i(TAG, "elapsed: " + model.getElapsedTime());
            Log.i(TAG, "secs: " + secs);
            Log.i(TAG, "mins: " + mins);
        }

        d1.showTime((int)Math.floor(mins/10));
        d2.showTime(mins % 10);
        d3.showTime((int)Math.floor(secs/10));
        d4.showTime(secs % 10);
        d5.showTime((int)Math.floor(milli/100));
    }

    /**
     * Find our references to the objects in the xml layout
     */
    @Override
    protected void onFinishInflate() {
        super.onFinishInflate();
        toggleBtn = (Button)findViewById(R.id.toggleBtn);
        addBtn = (Button)findViewById(R.id.addTimeBtn);
        d1 = (Digit)findViewById(R.id.digit1);
        d2 = (Digit)findViewById(R.id.digit2);
        d3 = (Digit)findViewById(R.id.digit3);
        d4 = (Digit)findViewById(R.id.digit4);
        d5 = (Digit)findViewById(R.id.digit5);
        DigitObjectPool pool = new DigitObjectPool(getContext(), 10);
        d1.setPool(pool);
        d2.setPool(pool);
        d3.setPool(pool);
        d4.setPool(pool);
        d5.setPool(pool);


        toggleBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                viewListener.onToggleTimer();
            }
        });
        addBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                viewListener.onAddTime(AMOUNT_TO_ADD);
            }
        });
        model.addListener(AppModel.ChangeEvent.ELAPSED_TIME_CHANGED, elapsedTimeListener);
        bind();
    }

    /**
     * The listener for when the elapsed time property changes on the model
     */
    private EventListener elapsedTimeListener = new EventListener() {
        @Override
        public void onEvent(Event event) {
            bind();
        }
    };
}

Java Source Code List

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