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Diffstat (limited to 'OpenPGP-Keychain/src/org/sufficientlysecure/keychain/util/KeyValueSpinnerAdapter.java')
| -rw-r--r-- | OpenPGP-Keychain/src/org/sufficientlysecure/keychain/util/KeyValueSpinnerAdapter.java | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/OpenPGP-Keychain/src/org/sufficientlysecure/keychain/util/KeyValueSpinnerAdapter.java b/OpenPGP-Keychain/src/org/sufficientlysecure/keychain/util/KeyValueSpinnerAdapter.java new file mode 100644 index 000000000..e8905062c --- /dev/null +++ b/OpenPGP-Keychain/src/org/sufficientlysecure/keychain/util/KeyValueSpinnerAdapter.java @@ -0,0 +1,101 @@ +/* + * Copyright (C) 2013 Dominik Schürmann <dominik@dominikschuermann.de> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +package org.sufficientlysecure.keychain.util; + +import java.util.Comparator; +import java.util.HashMap; +import java.util.Map; +import java.util.SortedSet; +import java.util.TreeSet; + +import android.content.Context; +import android.widget.ArrayAdapter; + +public class KeyValueSpinnerAdapter extends ArrayAdapter<String> { + private final HashMap<Integer, String> mData; + private final int[] mKeys; + private final String[] mValues; + + static <K, V extends Comparable<? super V>> SortedSet<Map.Entry<K, V>> entriesSortedByValues( + Map<K, V> map) { + SortedSet<Map.Entry<K, V>> sortedEntries = new TreeSet<Map.Entry<K, V>>( + new Comparator<Map.Entry<K, V>>() { + @Override + public int compare(Map.Entry<K, V> e1, Map.Entry<K, V> e2) { + return e1.getValue().compareTo(e2.getValue()); + } + }); + sortedEntries.addAll(map.entrySet()); + return sortedEntries; + } + + public KeyValueSpinnerAdapter(Context context, HashMap<Integer, String> objects) { + // To make the drop down a simple text box + super(context, android.R.layout.simple_spinner_item); + mData = objects; + + // To make the drop down view a radio button list + setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); + + SortedSet<Map.Entry<Integer, String>> sorted = entriesSortedByValues(objects); + + // Assign hash keys with a position so that we can present and retrieve them + int i = 0; + mKeys = new int[mData.size()]; + mValues = new String[mData.size()]; + for (Map.Entry<Integer, String> entry : sorted) { + mKeys[i] = entry.getKey(); + mValues[i] = entry.getValue(); + i++; + } + } + + public int getCount() { + return mData.size(); + } + + /** + * Returns the value + */ + @Override + public String getItem(int position) { + // return the value based on the position. This is displayed in the list. + return mValues[position]; + } + + /** + * Returns item key + */ + public long getItemId(int position) { + // Return an id to represent the item. + + return mKeys[position]; + } + + /** + * Find position from key + */ + public int getPosition(long itemId) { + for (int i = 0; i < mKeys.length; i++) { + if ((int) itemId == mKeys[i]) { + return i; + } + } + return -1; + } +}
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