package com.fsck.k9.activity;
import android.app.Activity;
import android.content.res.TypedArray;
import android.view.GestureDetector;
import android.view.MotionEvent;
import com.fsck.k9.K9;
import com.fsck.k9.activity.misc.SwipeGestureDetector;
import com.fsck.k9.activity.misc.SwipeGestureDetector.OnSwipeGestureListener;
/**
* This class implements functionality common to most activities used in K-9 Mail.
*
* @see K9Activity
* @see K9ListActivity
*/
public class K9ActivityCommon {
/**
* Creates a new instance of {@link K9ActivityCommon} bound to the specified activity.
*
* @param activity
* The {@link Activity} the returned {@code K9ActivityCommon} instance will be bound to.
*
* @return The {@link K9ActivityCommon} instance that will provide the base functionality of the
* "K9" activities.
*/
public static K9ActivityCommon newInstance(Activity activity) {
return new K9ActivityCommon(activity);
}
/**
* Base activities need to implement this interface.
*
* <p>The implementing class simply has to call through to the implementation of these methods
* in {@link K9ActivityCommon}.</p>
*/
public interface K9ActivityMagic {
void setupGestureDetector(OnSwipeGestureListener listener);
}
private Activity mActivity;
private GestureDetector mGestureDetector;
private K9ActivityCommon(Activity activity) {
mActivity = activity;
mActivity.setTheme(K9.getK9ThemeResourceId());
}
/**
* Call this before calling {@code super.dispatchTouchEvent(MotionEvent)}.
*/
public void preDispatchTouchEvent(MotionEvent event) {
if (mGestureDetector != null) {
mGestureDetector.onTouchEvent(event);
}
}
/**
* Get the background color of the theme used for this activity.
*
* @return The background color of the current theme.
*/
public int getThemeBackgroundColor() {
TypedArray array = mActivity.getTheme().obtainStyledAttributes(
new int[] { android.R.attr.colorBackground });
int backgroundColor = array.getColor(0, 0xFF00FF);
array.recycle();
return backgroundColor;
}
/**
* Call this if you wish to use the swipe gesture detector.
*
* @param listener
* A listener that will be notified if a left to right or right to left swipe has been
* detected.
*/
public void setupGestureDetector(OnSwipeGestureListener listener) {
mGestureDetector = new GestureDetector(mActivity,
new SwipeGestureDetector(mActivity, listener));
}
}