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package org.sufficientlysecure.keychain.util;
import android.database.Cursor;
import android.database.CursorWrapper;
public abstract class FilterCursorWrapper extends CursorWrapper {
private int[] mIndex;
private int mCount = 0;
private int mPos = 0;
public abstract boolean isVisible(Cursor cursor);
public FilterCursorWrapper(Cursor cursor) {
super(cursor);
mCount = super.getCount();
mIndex = new int[mCount];
for (int i = 0; i < mCount; i++) {
super.moveToPosition(i);
if (isVisible(cursor)) {
mIndex[mPos++] = i;
}
}
mCount = mPos;
mPos = 0;
super.moveToFirst();
}
@Override
public boolean move(int offset) {
return this.moveToPosition(mPos + offset);
}
@Override
public boolean moveToNext() {
return this.moveToPosition(mPos + 1);
}
@Override
public boolean moveToPrevious() {
return this.moveToPosition(mPos - 1);
}
@Override
public boolean moveToFirst() {
return this.moveToPosition(0);
}
@Override
public boolean moveToLast() {
return this.moveToPosition(mCount - 1);
}
@Override
public boolean moveToPosition(int position) {
if (position >= mCount || position < 0) {
return false;
}
return super.moveToPosition(mIndex[position]);
}
@Override
public int getCount() {
return mCount;
}
public int getHiddenCount() {
return super.getCount() - mCount;
}
@Override
public int getPosition() {
return mPos;
}
}
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