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/*
* Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
* Copyright (C) 2014 Vincent Breitmoser <v.breitmoser@mugenguild.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;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.AnimationUtils;
import org.sufficientlysecure.keychain.R;
/**
* This is a fragment helper class, which implements a generic
* progressbar/container view.
* <p/>
* To use it in a fragment, simply subclass, use onCreateView to create the
* layout's root view, and ues getContainer() as root view of your subclass.
* The layout shows a progress bar by default, and can be switched to the
* actual contents by calling setContentShown().
*/
public abstract class LoaderFragment extends Fragment {
private boolean mContentShown;
private View mProgressContainer;
private ViewGroup mContainer;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View root = inflater.inflate(R.layout.loader_layout, container, false);
mContentShown = true;
mContainer = (ViewGroup) root.findViewById(R.id.loader_container);
mProgressContainer = root.findViewById(R.id.loader_progress);
// content is not shown (by visibility statuses in the layout files)
mContentShown = false;
return root;
}
protected ViewGroup getContainer() {
return mContainer;
}
public void setContentShown(boolean shown, boolean animate) {
if (mContentShown == shown) {
return;
}
mContentShown = shown;
if (shown) {
if (animate) {
mProgressContainer.startAnimation(AnimationUtils.loadAnimation(
getActivity(), android.R.anim.fade_out));
mContainer.startAnimation(AnimationUtils.loadAnimation(
getActivity(), android.R.anim.fade_in));
}
mProgressContainer.setVisibility(View.GONE);
mContainer.setVisibility(View.VISIBLE);
} else {
if (animate) {
mProgressContainer.startAnimation(AnimationUtils.loadAnimation(
getActivity(), android.R.anim.fade_in));
mContainer.startAnimation(AnimationUtils.loadAnimation(
getActivity(), android.R.anim.fade_out));
}
mProgressContainer.setVisibility(View.VISIBLE);
mContainer.setVisibility(View.INVISIBLE);
}
}
public void setContentShown(boolean shown) {
setContentShown(shown, true);
}
public void setContentShownNoAnimation(boolean shown) {
setContentShown(shown, false);
}
}
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