android/sdk/src/main/java/com/taobao/weex/ui/component/WXLoading.java

/*
 * 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 com.taobao.weex.ui.component;

import android.content.Context;
import android.support.annotation.NonNull;
import android.text.TextUtils;

import com.taobao.weex.WXSDKInstance;
import com.taobao.weex.annotation.Component;
import com.taobao.weex.common.Constants;
import com.taobao.weex.ui.action.BasicComponentData;
import com.taobao.weex.ui.component.list.WXListComponent;
import com.taobao.weex.ui.view.WXFrameLayout;
import com.taobao.weex.ui.view.WXLoadingLayout;
import com.taobao.weex.ui.view.refresh.core.WXSwipeLayout;
import com.taobao.weex.ui.view.refresh.wrapper.BaseBounceView;
import com.taobao.weex.utils.WXUtils;

import java.util.HashMap;
import java.util.Map;

/**
 * div component
 */
@Component(lazyload = false)
public class WXLoading extends WXBaseRefresh implements WXSwipeLayout.WXOnLoadingListener {

  public static final String HIDE = "hide";

  public WXLoading(WXSDKInstance instance, WXVContainer parent, boolean lazy, BasicComponentData basicComponentData) {
    super(instance, parent, lazy, basicComponentData);
  }

  @Override
  protected WXFrameLayout initComponentHostView(@NonNull Context context) {
    return new WXLoadingLayout(context);
  }

  @Override
  public void onLoading() {
    if (getEvents().contains(Constants.Event.ONLOADING)) {
      fireEvent(Constants.Event.ONLOADING);
    }
  }

  @Override
  protected void setHostLayoutParams(WXFrameLayout host, int width, int height,
                                     int left, int right, int top, int bottom) {
    // The view of WXLoading will always be wrapped by a WXRefreshView at some point
    // which is unknowable for front-end so the margins should always be 0 in LayoutParams,
    // otherwise it will bring visible layout errors. This means WXLoading do not
    // support margin.
    super.setHostLayoutParams(host, width, height, 0, 0, 0, 0);
  }

  @Override
  public void onPullingUp(float dy, int pullOutDistance, float viewHeight) {
    if (getEvents().contains(Constants.Event.ONPULLING_UP)) {
      Map<String, Object> data = new HashMap<>();
      data.put(Constants.Name.DISTANCE_Y, dy);
      data.put(Constants.Name.PULLING_DISTANCE, pullOutDistance);
      data.put(Constants.Name.VIEW_HEIGHT, viewHeight);
      fireEvent(Constants.Event.ONPULLING_UP, data);
    }
  }

  @Override
  public boolean canRecycled() {
    return false;
  }

  @Override
  protected boolean setProperty(String key, Object param) {
    switch (key) {
      case Constants.Name.DISPLAY:
        String display = WXUtils.getString(param,null);
        if (display != null)
          setDisplay(display);
        return true;
    }
    return super.setProperty(key, param);
  }

  @WXComponentProp(name = Constants.Name.DISPLAY)
  public void setDisplay(String display) {
    if (!TextUtils.isEmpty(display)) {
      if (display.equals(HIDE)) {
        if (getParent() instanceof WXListComponent || getParent() instanceof WXScroller) {
          if (((BaseBounceView)getParent().getHostView()).getSwipeLayout().isRefreshing()) {
            ((BaseBounceView) getParent().getHostView()).finishPullLoad();
            ((BaseBounceView) getParent().getHostView()).onLoadmoreComplete();
          }
        }
      }
    }
  }
}