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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.messaging.ui;
import android.content.Context;
import androidx.viewpager.widget.PagerAdapter;
import androidx.viewpager.widget.ViewPager;
import androidx.viewpager.widget.ViewPager.OnPageChangeListener;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.LayoutInflater;
import android.widget.LinearLayout;
import com.android.messaging.R;
import com.android.messaging.util.Assert;
/**
* A view that contains both a view pager and a tab strip wrapped in a linear layout.
*/
public class CustomHeaderViewPager extends LinearLayout {
public final static int DEFAULT_TAB_STRIP_SIZE = -1;
private final int mDefaultTabStripSize;
private ViewPager mViewPager;
private ViewPagerTabs mTabstrip;
public CustomHeaderViewPager(final Context context, final AttributeSet attrs) {
super(context, attrs);
final LayoutInflater inflater = LayoutInflater.from(context);
inflater.inflate(R.layout.custom_header_view_pager, this, true);
setOrientation(LinearLayout.VERTICAL);
mTabstrip = (ViewPagerTabs) findViewById(R.id.tab_strip);
mViewPager = (ViewPager) findViewById(R.id.pager);
TypedValue tv = new TypedValue();
context.getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true);
mDefaultTabStripSize = context.getResources().getDimensionPixelSize(tv.resourceId);
}
public void setCurrentItem(final int position) {
mViewPager.setCurrentItem(position);
}
public void setViewPagerTabHeight(final int tabHeight) {
mTabstrip.getLayoutParams().height = tabHeight == DEFAULT_TAB_STRIP_SIZE ?
mDefaultTabStripSize : tabHeight;
}
public void setViewHolders(final CustomHeaderPagerViewHolder[] viewHolders) {
Assert.notNull(mViewPager);
final PagerAdapter adapter = new CustomHeaderViewPagerAdapter(viewHolders);
mViewPager.setAdapter(adapter);
mTabstrip.setViewPager(mViewPager);
mViewPager.setOnPageChangeListener(new OnPageChangeListener() {
@Override
public void onPageScrollStateChanged(int state) {
mTabstrip.onPageScrollStateChanged(state);
}
@Override
public void onPageScrolled(int position, float positionOffset,
int positionOffsetPixels) {
mTabstrip.onPageScrolled(position, positionOffset, positionOffsetPixels);
}
@Override
public void onPageSelected(int position) {
mTabstrip.onPageSelected(position);
}
});
}
public int getSelectedItemPosition() {
return mTabstrip.getSelectedItemPosition();
}
}