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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.packageinstaller.permission.ui.handheld;
import android.os.Bundle;
import android.preference.PreferenceFragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.Animation.AnimationListener;
import android.view.animation.AnimationUtils;
import android.widget.ListView;
import android.widget.TextView;
import com.android.packageinstaller.R;
public abstract class PermissionsFrameFragment extends PreferenceFragment {
private ViewGroup mPreferencesContainer;
private View mLoadingView;
private ViewGroup mPrefsView;
private boolean mIsLoading;
/**
* Returns the view group that holds the preferences objects. This will
* only be set after {@link #onCreateView} has been called.
*/
protected final ViewGroup getPreferencesContainer() {
return mPreferencesContainer;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
ViewGroup rootView = (ViewGroup) inflater.inflate(R.layout.permissions_frame, container,
false);
mPrefsView = (ViewGroup) rootView.findViewById(R.id.prefs_container);
if (mPrefsView == null) {
mPrefsView = rootView;
}
mLoadingView = rootView.findViewById(R.id.loading_container);
mPreferencesContainer = (ViewGroup) super.onCreateView(
inflater, mPrefsView, savedInstanceState);
setLoading(mIsLoading, false, true /* force */);
mPrefsView.addView(mPreferencesContainer);
return rootView;
}
protected void setLoading(boolean loading, boolean animate) {
setLoading(loading, animate, false);
}
private void setLoading(boolean loading, boolean animate, boolean force) {
if (mIsLoading != loading || force) {
mIsLoading = loading;
if (getView() == null) {
// If there is no created view, there is no reason to animate.
animate = false;
}
if (mPrefsView != null) {
setViewShown(mPrefsView, !loading, animate);
}
if (mLoadingView != null) {
setViewShown(mLoadingView, loading, animate);
}
}
}
@Override
public ListView getListView() {
ListView listView = super.getListView();
if (listView.getEmptyView() == null) {
TextView emptyView = (TextView) getView().findViewById(R.id.no_permissions);
listView.setEmptyView(emptyView);
}
return listView;
}
private void setViewShown(final View view, boolean shown, boolean animate) {
if (animate) {
Animation animation = AnimationUtils.loadAnimation(getContext(),
shown ? android.R.anim.fade_in : android.R.anim.fade_out);
if (shown) {
view.setVisibility(View.VISIBLE);
} else {
animation.setAnimationListener(new AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
}
@Override
public void onAnimationRepeat(Animation animation) {
}
@Override
public void onAnimationEnd(Animation animation) {
view.setVisibility(View.INVISIBLE);
}
});
}
view.startAnimation(animation);
} else {
view.clearAnimation();
view.setVisibility(shown ? View.VISIBLE : View.INVISIBLE);
}
}
}
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