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/*
* Copyright (C) 2013 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.photos;
import android.app.ActionBar;
import android.app.ActionBar.Tab;
import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentTransaction;
import android.content.Intent;
import android.os.Bundle;
import androidx.legacy.app.FragmentPagerAdapter;
import androidx.viewpager.widget.ViewPager;
import android.view.Menu;
import android.view.MenuItem;
import android.view.ViewGroup;
import com.android.gallery3d.R;
import java.util.ArrayList;
public class GalleryActivity extends Activity implements MultiChoiceManager.Provider {
private MultiChoiceManager mMultiChoiceManager;
private ViewPager mViewPager;
private TabsAdapter mTabsAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mMultiChoiceManager = new MultiChoiceManager(this);
mViewPager = new ViewPager(this);
mViewPager.setId(R.id.viewpager);
setContentView(mViewPager);
ActionBar ab = getActionBar();
ab.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
ab.setDisplayShowHomeEnabled(false);
ab.setDisplayShowTitleEnabled(false);
mTabsAdapter = new TabsAdapter(this, mViewPager);
mTabsAdapter.addTab(ab.newTab().setText(R.string.tab_photos),
PhotoSetFragment.class, null);
mTabsAdapter.addTab(ab.newTab().setText(R.string.tab_albums),
AlbumSetFragment.class, null);
if (savedInstanceState != null) {
ab.setSelectedNavigationItem(savedInstanceState.getInt("tab", 0));
}
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putInt("tab", getActionBar().getSelectedNavigationIndex());
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.gallery, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.menu_camera:
// TODO: Call the correct Camera intent.
throw new RuntimeException("Not implemented yet.");
// Intent intent = new Intent(this, CameraActivity.class);
// intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
// startActivity(intent);
// return true;
default:
return super.onOptionsItemSelected(item);
}
}
public static class TabsAdapter extends FragmentPagerAdapter implements
ActionBar.TabListener, ViewPager.OnPageChangeListener {
private final GalleryActivity mActivity;
private final ActionBar mActionBar;
private final ViewPager mViewPager;
private final ArrayList<TabInfo> mTabs = new ArrayList<TabInfo>();
static final class TabInfo {
private final Class<?> clss;
private final Bundle args;
TabInfo(Class<?> _class, Bundle _args) {
clss = _class;
args = _args;
}
}
public TabsAdapter(GalleryActivity activity, ViewPager pager) {
super(activity.getFragmentManager());
mActivity = activity;
mActionBar = activity.getActionBar();
mViewPager = pager;
mViewPager.setAdapter(this);
mViewPager.setOnPageChangeListener(this);
}
public void addTab(ActionBar.Tab tab, Class<?> clss, Bundle args) {
TabInfo info = new TabInfo(clss, args);
tab.setTag(info);
tab.setTabListener(this);
mTabs.add(info);
mActionBar.addTab(tab);
notifyDataSetChanged();
}
@Override
public int getCount() {
return mTabs.size();
}
@Override
public Fragment getItem(int position) {
TabInfo info = mTabs.get(position);
return Fragment.instantiate(mActivity, info.clss.getName(),
info.args);
}
@Override
public void onPageScrolled(int position, float positionOffset,
int positionOffsetPixels) {
}
@Override
public void onPageSelected(int position) {
mActionBar.setSelectedNavigationItem(position);
}
@Override
public void setPrimaryItem(ViewGroup container, int position, Object object) {
super.setPrimaryItem(container, position, object);
mActivity.mMultiChoiceManager.setDelegate((MultiChoiceManager.Delegate) object);
}
@Override
public void onPageScrollStateChanged(int state) {
}
@Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
Object tag = tab.getTag();
for (int i = 0; i < mTabs.size(); i++) {
if (mTabs.get(i) == tag) {
mViewPager.setCurrentItem(i);
}
}
}
@Override
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
}
@Override
public void onTabReselected(Tab tab, FragmentTransaction ft) {
}
}
@Override
public MultiChoiceManager getMultiChoiceManager() {
return mMultiChoiceManager;
}
}