content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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 org.apache.weex.ui.component.list;
  
  import android.content.Context;
  import android.os.Build;
  import android.support.annotation.NonNull;
  import android.support.annotation.RestrictTo;
  import android.text.TextUtils;
  import android.view.View;
  import android.view.ViewGroup;
  import android.widget.FrameLayout;
  
  import org.apache.weex.WXSDKInstance;
  import org.apache.weex.annotation.Component;
  import org.apache.weex.common.Constants;
  import org.apache.weex.dom.WXAttr;
  import org.apache.weex.performance.WXInstanceApm;
  import org.apache.weex.ui.ComponentCreator;
  import org.apache.weex.ui.action.BasicComponentData;
  import org.apache.weex.ui.component.WXComponent;
  import org.apache.weex.ui.component.WXHeader;
  import org.apache.weex.ui.component.WXVContainer;
  import org.apache.weex.ui.flat.WidgetContainer;
  import org.apache.weex.ui.view.WXFrameLayout;
  import org.apache.weex.utils.WXLogUtils;
  import org.apache.weex.utils.WXUtils;
  import org.apache.weex.utils.WXViewUtils;
  import org.apache.weex.common.Constants.Name;
  
  import java.lang.reflect.InvocationTargetException;
  import java.util.LinkedList;
  
  /**
   * Root component for components in {@link WXListComponent}
   */
  @Component(lazyload = false)
  
  public class WXCell extends WidgetContainer<WXFrameLayout> {
  
      private int mLastLocationY = 0;
      private ViewGroup mRealView;
      private View mTempStickyView;
      private View mHeadView;
  
      /** used in list sticky detect **/
      private int mScrollPosition = -1;
      private boolean mFlatUIEnabled = false;
  
  
      private Object  renderData;
  
      private boolean isSourceUsed = false;
  
      private boolean isAppendTreeDone;
  
      private CellAppendTreeListener cellAppendTreeListener;
  
      public static class Creator implements ComponentCreator {
          public WXComponent createInstance(WXSDKInstance instance,
                                            WXVContainer parent,
                                            BasicComponentData basicComponentData)
                  throws IllegalAccessException, InvocationTargetException, InstantiationException {
              return new WXCell(instance, parent, true, basicComponentData);
          }
      }
  
      @Deprecated
      public WXCell(WXSDKInstance instance, WXVContainer parent, String instanceId, boolean isLazy, BasicComponentData basicComponentData) {
          super(instance, parent, basicComponentData);
      }
  
      public WXCell(WXSDKInstance instance, WXVContainer parent, boolean isLazy, BasicComponentData basicComponentData) {
          super(instance, parent, basicComponentData);
          lazy(true);
          if(Build.VERSION.SDK_INT< Build.VERSION_CODES.LOLLIPOP) {
              try {
                  //TODO a WTF is necessary if anyone try to change the flat flag during update attrs.
                  WXAttr attr = getAttrs();
                  if (attr.containsKey(Constants.Name.FLAT)) {
                      mFlatUIEnabled = WXUtils.getBoolean(attr.get(Constants.Name.FLAT), false);
                  }
              } catch (NullPointerException e) {
                  WXLogUtils.e("Cell", WXLogUtils.getStackTrace(e));
              }
          }
          if (!canRecycled()){
              instance.getApmForInstance().updateDiffStats(WXInstanceApm.KEY_PAGE_STATS_CELL_DATA_UN_RECYCLE_NUM,1);
          }
          if (TextUtils.isEmpty(getAttrs().getScope())){
              instance.getApmForInstance().updateDiffStats(WXInstanceApm.KEY_PAGE_STATS_CELL_UN_RE_USE_NUM,1);
          }
      }
  
      @Override
      public boolean isLazy() {
          return super.isLazy() && !isFixed();
      }
  
      @Override
      @RestrictTo(RestrictTo.Scope.LIBRARY)
      public boolean isFlatUIEnabled() {
          return mFlatUIEnabled;
      }
  
      /**
       * If Cell is Sticky, need wraped FrameLayout
       */
      @Override
      protected WXFrameLayout initComponentHostView(@NonNull Context context) {
          if (isSticky() || this instanceof WXHeader) {
              WXFrameLayout view = new WXFrameLayout(context);
              mRealView = new WXFrameLayout(context);
              view.addView(mRealView);
              //TODO Maybe there is a better solution for hardware-acceleration view's display list.
              if (isFlatUIEnabled()) {
                  view.setLayerType(View.LAYER_TYPE_HARDWARE, null);
              }
              return view;
          } else {
              WXFrameLayout view = new WXFrameLayout(context);
              mRealView = view;
              if (isFlatUIEnabled()) {
                  view.setLayerType(View.LAYER_TYPE_HARDWARE, null);
              }
              return view;
          }
      }
  
      public int getLocationFromStart(){
          return mLastLocationY;
      }
  
      public void setLocationFromStart(int l){
          mLastLocationY = l;
      }
  
      void setScrollPositon(int pos){
          mScrollPosition = pos;
      }
  
      public int getScrollPositon() {
          return mScrollPosition;
      }
  
      @Override
      public ViewGroup getRealView() {
          return mRealView;
      }
  
      public void removeSticky() {
          if(getHostView().getChildCount() > 0) {
              mHeadView = getHostView().getChildAt(0);
              int[] location = new int[2];
              int[] parentLocation = new int[2];
              getHostView().getLocationOnScreen(location);
              getParentScroller().getView().getLocationOnScreen(parentLocation);
              int headerViewOffsetX = location[0] - parentLocation[0];
              int headerViewOffsetY = getParent().getHostView().getTop();
              getHostView().removeView(mHeadView);
              mRealView = (ViewGroup) mHeadView;
              mTempStickyView = new FrameLayout(getContext());
              FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams((int) getLayoutWidth(),
                      (int) getLayoutHeight());
              getHostView().addView(mTempStickyView, lp);
              mHeadView.setTranslationX(headerViewOffsetX);
              mHeadView.setTranslationY(headerViewOffsetY);
          }
      }
  
      public void recoverySticky() {
          if(mHeadView != null){
              if(mHeadView.getLayoutParams() != null){
                  ViewGroup.MarginLayoutParams params = (ViewGroup.MarginLayoutParams) mHeadView.getLayoutParams();
                  if(params.topMargin > 0){
                      params.topMargin = 0;
                  }
              }
              if(mHeadView.getVisibility() != View.VISIBLE){
                  mHeadView.setVisibility(View.VISIBLE);
              }
              if(mHeadView.getParent() != null){
                  ((ViewGroup)mHeadView.getParent()).removeView(mHeadView);
              }
              getHostView().removeView(mTempStickyView);
              getHostView().addView(mHeadView);
              mHeadView.setTranslationX(0);
              mHeadView.setTranslationY(0);
          }
      }
  
      @Override
      protected void mountFlatGUI() {
          if(getHostView()!=null) {
              if(widgets == null){
                  widgets = new LinkedList<>();
              }
              getHostView().mountFlatGUI(widgets);
          }
      }
  
      @Override
      public void unmountFlatGUI() {
          if (getHostView() != null) {
              getHostView().unmountFlatGUI();
          }
      }
  
      @Override
      public boolean intendToBeFlatContainer() {
          return getInstance().getFlatUIContext().isFlatUIEnabled(this) && WXCell.class.equals(getClass()) && !isSticky();
      }
  
      public int getStickyOffset(){
          if(getAttrs().get(Name.STICKY_OFFSET) == null){
              return 0;
          }
          float  offset = WXUtils.getFloat(getAttrs().get(Name.STICKY_OFFSET));
          return (int)(WXViewUtils.getRealPxByWidth(offset, getViewPortWidth()));
      }
  
      public Object getRenderData() {
          return renderData;
      }
  
      public void setRenderData(Object renderData) {
          this.renderData = renderData;
      }
  
      public boolean isSourceUsed() {
          return isSourceUsed;
      }
  
      public void setSourceUsed(boolean sourceUsed) {
          isSourceUsed = sourceUsed;
      }
  
  
      public boolean isAppendTreeDone(){
          return isAppendTreeDone;
      }
  
      @Override
      public void appendTreeCreateFinish() {
          super.appendTreeCreateFinish();
          isAppendTreeDone = true;
          if(cellAppendTreeListener != null){
              cellAppendTreeListener.onAppendTreeDone();
          }
      }
  
      public void setCellAppendTreeListener(CellAppendTreeListener cellAppendTreeListener) {
          this.cellAppendTreeListener = cellAppendTreeListener;
          if(isAppendTreeDone){
              cellAppendTreeListener.onAppendTreeDone();
          }
      }
  
      public interface CellAppendTreeListener{
          public void onAppendTreeDone();
      }
  }
  