Removed unused ToggleScrollView

src/com/fsck/k9/view/ToggleScrollView.java

@@ -1,143 +0,0 @@
-package com.fsck.k9.view;
-
-import android.content.Context;
-import android.util.AttributeSet;
-import android.util.Log;
-import android.view.GestureDetector;
-import android.view.MotionEvent;
-import android.widget.ScrollView;
-import com.fsck.k9.K9;
-import com.fsck.k9.controller.MessagingListener;
-
-/**
- * An extension of {@link ScrollView} that allows scrolling to be selectively disabled.
- */
-public class ToggleScrollView extends ScrollView {
-    private GestureDetector mDetector;
-    private boolean mScrolling = true;
-    private int mCurrentYPosition;
-    private double mScrollPercentage;
-    private ScrollToLastLocationListener mListener;
-
-    public ToggleScrollView(Context context, AttributeSet attrs) {
-        super(context, attrs);
-        mDetector = new GestureDetector(new YScrollDetector());
-    }
-
-    public void setScrolling(boolean enable) {
-        mScrolling = enable;
-    }
-
-    @Override
-    public boolean onTouchEvent(MotionEvent ev) {
-        return (mScrolling) ? super.onTouchEvent(ev) : true;
-    }
-
-    @Override
-    public boolean onInterceptTouchEvent(MotionEvent ev) {
-        if (!mScrolling) {
-            return false;
-        }
-
-        // This doesn't quite get us to diagonal scrolling, but it's somewhat better than what we've
-        // currently got.  This is based on
-        // http://stackoverflow.com/questions/2646028/android-horizontalscrollview-within-scrollview-touch-handling
-        boolean result = super.onInterceptTouchEvent(ev);
-        // Let the original ScrollView handle ACTION_DOWN so we can stop the scroll when someone touches the screen.
-        if (ev.getAction() == MotionEvent.ACTION_DOWN || mDetector.onTouchEvent(ev)) {
-            return result;
-        }
-
-        return false;
-    }
-
-    // Return false if we're scrolling in the x direction. That is, decline to consume the event and
-    // let the parent class take a stab at it.
-    class YScrollDetector extends GestureDetector.SimpleOnGestureListener {
-        @Override
-        public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
-            try {
-                if (Math.abs(distanceY) > Math.abs(distanceX)) {
-                    return true;
-                } else {
-                    return false;
-                }
-            } catch (Exception e) {
-                // nothing
-            }
-            return false;
-        }
-    }
-
-    /**
-     * Fetch the current percentage by which this view has been scrolled.
-     * @return Scroll percentage based on the top edge of the screen, from 0 to 100.  This number should never really
-     * be 100, unless the screen is of 0 height...
-     */
-    public double getScrollPercentage() {
-        // We save only the Y coordinate instead of the percentage because I don't know how expensive the
-        // computeVerticalScrollRange() call is.
-        final int scrollRange = computeVerticalScrollRange();
-        if(scrollRange == 0) {
-            return 0;
-        }
-        return (double) mCurrentYPosition / scrollRange;
-    }
-
-    /**
-     * Set the percentage by which we should scroll the page once we get the load complete event.  This is
-     * based on the top edge of the view.
-     * @param percentage Percentage of page to scroll to.
-     */
-    public void setScrollPercentage(final double percentage) {
-        Log.d(K9.LOG_TAG, "ToggleView: Setting last scroll percentage to " + percentage);
-        this.mScrollPercentage = percentage;
-    }
-
-    /**
-     * Override {@link ScrollView#onScrollChanged(int, int, int, int)} to record the current x/y position.  We use this
-     * to save our current position for future scrolling.
-     *
-     * @param x
-     * @param y
-     * @param oldx
-     * @param oldy
-     */
-    @Override
-    protected void onScrollChanged(int x, int y, int oldx, int oldy) {
-        super.onScrollChanged(x, y, oldx, oldy);
-
-        this.mCurrentYPosition = y;
-        // I wish Android has a TRACE log level so I wouldn't have to comment this out.  This one is really noisy.
-        // Log.d(K9.LOG_TAG, "ToggleScrollView: mCurrentYPosition=" + y + " scrollRange=" + computeVerticalScrollRange() + " pct=" + getScrollPercentage());
-    }
-
-    /**
-     * This is a {@link MessagingListener} which listens for when the a message has finished being displayed on the
-     * screen.  We'll scroll the message to the user's last known location once it's done.
-     */
-    class ScrollToLastLocationListener extends MessagingListener {
-        public void messageViewFinished() {
-            // Don't scroll if our last position was at the top.
-            if(mScrollPercentage != 0.0) {
-                final int scrollRange = computeVerticalScrollRange();
-                final int newY = (int)(mScrollPercentage * scrollRange);
-                Log.d(K9.LOG_TAG, "ToggleScrollView: requested " + (100 * mScrollPercentage) + "%, " +
-                    "scrolling to " + newY + "/" + scrollRange);
-                scrollTo(0, newY);
-            }
-        }
-    }
-
-    /**
-     * Fetch the {@link MessagingListener} for this <code>ScrollView</code>.
-     * @return
-     */
-    public MessagingListener getListener() {
-        if(this.mListener != null) {
-            return this.mListener;
-        } else {
-            return this.mListener = new ScrollToLastLocationListener();
-        }
-    }
-}