diff options
Diffstat (limited to 'OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util')
-rw-r--r-- | OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/FilterCursorWrapper.java | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/FilterCursorWrapper.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/FilterCursorWrapper.java new file mode 100644 index 000000000..ab73f59b8 --- /dev/null +++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/FilterCursorWrapper.java @@ -0,0 +1,76 @@ +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; + } + +}
\ No newline at end of file |