93 lines
2.3 KiB
Java
93 lines
2.3 KiB
Java
/*
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* Copyright (C) 2015 Dominik Schürmann <dominik@dominikschuermann.de>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.sufficientlysecure.keychain.util;
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import android.database.Cursor;
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import android.database.CursorWrapper;
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public abstract class FilterCursorWrapper extends CursorWrapper {
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private int[] mIndex;
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private int mCount = 0;
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private int mPos = 0;
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public abstract boolean isVisible(Cursor cursor);
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public FilterCursorWrapper(Cursor cursor) {
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super(cursor);
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mCount = super.getCount();
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mIndex = new int[mCount];
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for (int i = 0; i < mCount; i++) {
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super.moveToPosition(i);
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if (isVisible(cursor)) {
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mIndex[mPos++] = i;
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}
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}
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mCount = mPos;
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mPos = 0;
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super.moveToFirst();
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}
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@Override
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public boolean move(int offset) {
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return this.moveToPosition(mPos + offset);
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}
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@Override
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public boolean moveToNext() {
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return this.moveToPosition(mPos + 1);
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}
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@Override
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public boolean moveToPrevious() {
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return this.moveToPosition(mPos - 1);
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}
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@Override
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public boolean moveToFirst() {
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return this.moveToPosition(0);
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}
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@Override
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public boolean moveToLast() {
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return this.moveToPosition(mCount - 1);
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}
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@Override
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public boolean moveToPosition(int position) {
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if (position >= mCount || position < 0) {
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return false;
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}
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return super.moveToPosition(mIndex[position]);
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}
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@Override
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public int getCount() {
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return mCount;
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}
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public int getHiddenCount() {
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return super.getCount() - mCount;
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}
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@Override
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public int getPosition() {
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return mPos;
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}
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} |