/*
* ******************************************************************************
* Copyright (c) 2013-2014 Gabriele Mariotti.
*
* 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 it.gmariotti.cardslib.demo.extras.stickylist;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.ValueAnimator;
import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import java.util.ArrayList;
import java.util.List;
import it.gmariotti.cardslib.library.R;
import it.gmariotti.cardslib.library.internal.Card;
import it.gmariotti.cardslib.library.internal.CardArrayAdapter;
import it.gmariotti.cardslib.library.view.CardView;
import it.gmariotti.cardslib.library.view.base.CardViewWrapper;
import se.emilsjolander.stickylistheaders.StickyListHeadersAdapter;
import se.emilsjolander.stickylistheaders.StickyListHeadersListView;
/**
* @author Gabriele Mariotti (gabri.mariotti@gmail.com)
*/
public class StickyCardListView extends StickyListHeadersListView implements CardView.OnExpandListAnimatorListener{
protected static String TAG = "CardListView";
/**
* Stycky Card Array Adapter
*/
protected CardArrayAdapter mAdapter;
//--------------------------------------------------------------------------
// Fields for expand/collapse animation
//--------------------------------------------------------------------------
private boolean mShouldRemoveObserver = false;
private List<View> mViewsToDraw = new ArrayList<View>();
private int[] mTranslate;
//--------------------------------------------------------------------------
// Custom Attrs
//--------------------------------------------------------------------------
/**
* Default layout to apply to card
*/
protected int list_card_layout_resourceID = R.layout.list_card_layout;
//--------------------------------------------------------------------------
// Constructors
//--------------------------------------------------------------------------
public StickyCardListView(Context context) {
super(context);
init(null, 0);
}
public StickyCardListView(Context context, AttributeSet attrs) {
super(context, attrs);
init(attrs, 0);
}
public StickyCardListView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init(attrs, defStyle);
}
//--------------------------------------------------------------------------
// Init
//--------------------------------------------------------------------------
/**
* Initialize
*
* @param attrs
* @param defStyle
*/
protected void init(AttributeSet attrs, int defStyle) {
//Init attrs
initAttrs(attrs, defStyle);
//Set divider to 0dp
setDividerHeight(0);
}
/**
* Init custom attrs.
*
* @param attrs
* @param defStyle
*/
protected void initAttrs(AttributeSet attrs, int defStyle) {
list_card_layout_resourceID = R.layout.list_card_layout;
TypedArray a = getContext().getTheme().obtainStyledAttributes(
attrs, R.styleable.card_options, defStyle, defStyle);
try {
list_card_layout_resourceID = a.getResourceId(R.styleable.card_options_list_card_layout_resourceID, this.list_card_layout_resourceID);
} finally {
a.recycle();
}
}
//--------------------------------------------------------------------------
// Adapter
//--------------------------------------------------------------------------
/**
* Set the adapter. You can provide a {@link CardArrayAdapter}, or a {@link it.gmariotti.cardslib.library.internal.CardCursorAdapter}
* or a generic adapter.
* Pay attention: your generic adapter has to call {@link CardArrayAdapter#getView} method
*
* @param adapter
*/
@Override
public void setAdapter(StickyListHeadersAdapter adapter) {
if (adapter instanceof StickyCardArrayAdapter) {
setAdapter((StickyCardArrayAdapter) adapter);
} else {
Log.e(TAG, "You are using a generic adapter. Pay attention: your adapter has to call cardArrayAdapter#getView method");
super.setAdapter(adapter);
}
}
/**
* Set {@link CardArrayAdapter} and layout used by items in ListView
*
* @param adapter {@link CardArrayAdapter}
*/
public void setAdapter(StickyCardArrayAdapter adapter) {
super.setAdapter(adapter);
//Set Layout used by items
adapter.setRowLayoutId(list_card_layout_resourceID);
adapter.setCardListView(this);
mAdapter = adapter;
}
//--------------------------------------------------------------------------
// Expand and Collapse animator
//--------------------------------------------------------------------------
@Override
public void onExpandStart(CardViewWrapper viewCard, View expandingLayout) {
ExpandCollapseHelper.animateExpanding(expandingLayout, viewCard, this);
}
@Override
public void onCollapseStart(CardViewWrapper viewCard, View expandingLayout) {
ExpandCollapseHelper.animateCollapsing(expandingLayout, viewCard, this);
}
/**
* Helper to animate collapse and expand animation
*/
private static class ExpandCollapseHelper {
/**
* This method expandes the view that was clicked.
*
* @param expandingLayout layout to expand
* @param cardView cardView
* @param listView listView
*/
public static void animateCollapsing(final View expandingLayout, final CardViewWrapper cardView, final StickyCardListView listView) {
int origHeight = expandingLayout.getHeight();
ValueAnimator animator = createHeightAnimator(expandingLayout, origHeight, 0);
animator.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(final Animator animator) {
expandingLayout.setVisibility(View.GONE);
cardView.setExpanded(false);//card.setExpanded(true);
notifyAdapter(listView);
Card card = cardView.getCard();
if (card.getOnCollapseAnimatorEndListener() != null)
card.getOnCollapseAnimatorEndListener().onCollapseEnd(card);
}
});
animator.start();
}
/**
* This method collapse the view that was clicked.
*
* @param expandingLayout layout to collapse
* @param cardView cardView
* @param listView listView
*/
public static void animateExpanding(final View expandingLayout, final CardViewWrapper cardView, final StickyCardListView listView) {
/* Update the layout so the extra content becomes visible.*/
expandingLayout.setVisibility(View.VISIBLE);
View parent = (View) expandingLayout.getParent();
final int widthSpec = View.MeasureSpec.makeMeasureSpec(parent.getMeasuredWidth() - parent.getPaddingLeft() - parent.getPaddingRight(), View.MeasureSpec.AT_MOST);
final int heightSpec = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
expandingLayout.measure(widthSpec, heightSpec);
ValueAnimator animator = createHeightAnimator(expandingLayout, 0, expandingLayout.getMeasuredHeight());
animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
final int listViewHeight = listView.getHeight();
final int listViewBottomPadding = listView.getPaddingBottom();
final View v = findDirectChild(expandingLayout, listView);
@Override
public void onAnimationUpdate(final ValueAnimator valueAnimator) {
final int bottom = v.getBottom();
if (bottom > listViewHeight) {
final int top = v.getTop();
if (top > 0) {
listView.smoothScrollBy(Math.min(bottom - listViewHeight + listViewBottomPadding, top), 0);
}
}
}
});
animator.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
super.onAnimationEnd(animation);
cardView.setExpanded(true);//card.setExpanded(true);
notifyAdapter(listView);
Card card = cardView.getCard();
if (card.getOnExpandAnimatorEndListener() != null)
card.getOnExpandAnimatorEndListener().onExpandEnd(card);
}
});
animator.start();
}
private static View findDirectChild(final View view, final StickyCardListView listView) {
View result = view;
View parent = (View) result.getParent();
while (parent != listView) {
result = parent;
parent = (View) result.getParent();
}
return result;
}
public static ValueAnimator createHeightAnimator(final View view, final int start, final int end) {
ValueAnimator animator = ValueAnimator.ofInt(start, end);
animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(final ValueAnimator valueAnimator) {
int value = (Integer) valueAnimator.getAnimatedValue();
ViewGroup.LayoutParams layoutParams = view.getLayoutParams();
layoutParams.height = value;
view.setLayoutParams(layoutParams);
}
});
return animator;
}
/**
* This method notifies the adapter after setting expand value inside cards
*
* @param listView
*/
public static void notifyAdapter(StickyCardListView listView) {
if (listView.mAdapter != null) {
listView.mAdapter.notifyDataSetChanged();
}
}
}
}