Android/app/src/main/java/com/moiseum/wolnelektury/components/ProgressRecyclerView.java

   1 package com.moiseum.wolnelektury.components;
   2
   3 import android.content.Context;
   4 import android.content.res.TypedArray;
   5 import android.support.annotation.NonNull;
   6 import android.support.annotation.Nullable;
   7 import android.support.annotation.StringRes;
   8 import android.support.v7.widget.RecyclerView;
   9 import android.util.AttributeSet;
  10 import android.view.LayoutInflater;
  11 import android.view.View;
  12 import android.widget.FrameLayout;
  13 import android.widget.ImageButton;
  14 import android.widget.ProgressBar;
  15 import android.widget.TextView;
  16
  17 import com.moiseum.wolnelektury.R;
  18 import com.moiseum.wolnelektury.components.recycler.RecyclerAdapter;
  19
  20 import java.util.List;
  21
  22 import butterknife.BindView;
  23 import butterknife.ButterKnife;
  24 import butterknife.OnClick;
  25
  26 /**
  27  * @author golonkos
  28  */
  29
  30 public class ProgressRecyclerView<T> extends FrameLayout {
  31
  32         public interface ProgressRecycleViewRetryListener {
  33                 void onRetryClicked();
  34         }
  35
  36         @BindView(R.id.rvList)
  37         RecyclerView rvList;
  38         @BindView(R.id.tvEmpty)
  39         TextView tvEmpty;
  40         @BindView(R.id.pbLoading)
  41         ProgressBar pbLoading;
  42         @BindView(R.id.ibRetry)
  43         ImageButton ibRetry;
  44
  45         private RecyclerAdapter<T, ?> adapter;
  46         private ProgressRecycleViewRetryListener listener;
  47
  48         public ProgressRecyclerView(@NonNull Context context) {
  49                 this(context, null);
  50         }
  51
  52         public ProgressRecyclerView(@NonNull Context context, @Nullable AttributeSet attrs) {
  53                 this(context, attrs, 0);
  54         }
  55
  56         public ProgressRecyclerView(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
  57                 super(context, attrs, defStyleAttr);
  58                 init(attrs);
  59         }
  60
  61         private void init(AttributeSet attrs) {
  62                 View view = LayoutInflater.from(getContext()).inflate(R.layout.progress_recyclerview, this, true);
  63                 ButterKnife.bind(this, view);
  64
  65                 TypedArray a = getContext().obtainStyledAttributes(attrs, R.styleable.ProgressRecyclerView);
  66                 try {
  67                         if (a.hasValue(R.styleable.ProgressRecyclerView_emptyText)) {
  68                                 tvEmpty.setText(a.getString(R.styleable.ProgressRecyclerView_emptyText));
  69                         }
  70                 } finally {
  71                         a.recycle();
  72                 }
  73         }
  74
  75         public void setAdapter(RecyclerAdapter<T, ?> adapter) {
  76                 this.adapter = adapter;
  77                 rvList.setAdapter(adapter);
  78         }
  79
  80         public void setItems(List<T> items) {
  81                 if (adapter == null) {
  82                         throw new UnsupportedOperationException("Adapter not set");
  83                 }
  84                 adapter.setItems(items);
  85                 tvEmpty.setVisibility(items.isEmpty() ? VISIBLE : GONE);
  86         }
  87
  88         public void addItems(List<T> items) {
  89                 if (adapter == null) {
  90                         throw new UnsupportedOperationException("Adapter not set");
  91                 }
  92                 if (items.size() > 0) {
  93                         adapter.addItems(items);
  94                 }
  95         }
  96
  97         public void setProgressVisible(boolean visible) {
  98                 pbLoading.setVisibility(visible ? VISIBLE : GONE);
  99                 if (visible) {
 100                         tvEmpty.setVisibility(GONE);
 101                 }
 102         }
 103
 104         public void showRetryButton(ProgressRecycleViewRetryListener listener) {
 105                 this.listener = listener;
 106                 tvEmpty.setVisibility(GONE);
 107                 ibRetry.setVisibility(VISIBLE);
 108         }
 109
 110         public void setEmptyText(@StringRes int stringResId) {
 111                 tvEmpty.setText(stringResId);
 112         }
 113
 114         public void setLayoutManager(RecyclerView.LayoutManager layoutManager) {
 115                 rvList.setLayoutManager(layoutManager);
 116         }
 117
 118         public void setHasFixedSize(boolean fixedSize) {
 119                 rvList.setHasFixedSize(fixedSize);
 120         }
 121
 122         public void addOnScrollListener(RecyclerView.OnScrollListener listener) {
 123                 rvList.addOnScrollListener(listener);
 124         }
 125
 126         public void removeOnScrollListener(RecyclerView.OnScrollListener listener) {
 127                 rvList.removeOnScrollListener(listener);
 128         }
 129
 130         @OnClick(R.id.ibRetry)
 131         public void retryButtonClick() {
 132                 if (listener != null) {
 133                         listener.onRetryClicked();
 134                 }
 135                 ibRetry.setVisibility(GONE);
 136         }
 137
 138         public void updateEmptyViewVisibility() {
 139                 tvEmpty.setVisibility(ibRetry.getVisibility() == GONE && adapter.getItems().isEmpty() ? VISIBLE : GONE);
 140         }
 141 }