diff options
Diffstat (limited to 'OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/util/spinner/FocusFirstItemSpinner.java')
-rw-r--r-- | OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/util/spinner/FocusFirstItemSpinner.java | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/util/spinner/FocusFirstItemSpinner.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/util/spinner/FocusFirstItemSpinner.java new file mode 100644 index 000000000..7919a0918 --- /dev/null +++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/util/spinner/FocusFirstItemSpinner.java @@ -0,0 +1,77 @@ +/* + * Copyright (C) 2016 Alex Fong Jie Wen <alexfongg@gmail.com> + * + * 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.ui.util.spinner; + +import android.content.Context; +import android.util.AttributeSet; +import android.widget.Spinner; + +/** + * Custom spinner which uses a hack to + * always set focus on first item in list + * + */ +public class FocusFirstItemSpinner extends Spinner { + /** + * Spinner is originally designed to set focus on the currently selected item. + * When Spinner is selected to show dropdown, 'performClick()' is called internally. + * 'getSelectedItemPosition()' is then called to obtain the item to focus on. + * We use a toggle to have 'getSelectedItemPosition()' return the 0th index + * for this particular case. + */ + + private boolean mToggleFlag = true; + + public FocusFirstItemSpinner(Context context, AttributeSet attrs, + int defStyle, int mode) { + super(context, attrs, defStyle, mode); + } + + public FocusFirstItemSpinner(Context context, AttributeSet attrs, + int defStyle) { + super(context, attrs, defStyle); + } + + public FocusFirstItemSpinner(Context context, AttributeSet attrs) { + super(context, attrs); + } + + public FocusFirstItemSpinner(Context context, int mode) { + super(context, mode); + } + + public FocusFirstItemSpinner(Context context) { + super(context); + } + + @Override + public int getSelectedItemPosition() { + if (!mToggleFlag) { + return 0; + } + return super.getSelectedItemPosition(); + } + + @Override + public boolean performClick() { + mToggleFlag = false; + boolean result = super.performClick(); + mToggleFlag = true; + return result; + } +} |