Added Android code

[wl-app.git] / Android / app / src / main / java / com / moiseum / wolnelektury / components / ProgressRecyclerView.java

diff --git a/Android/app/src/main/java/com/moiseum/wolnelektury/components/ProgressRecyclerView.java b/Android/app/src/main/java/com/moiseum/wolnelektury/components/ProgressRecyclerView.java
new file mode 100644 (file)
index 0000000..cccb42a
--- /dev/null
+++ b/Android/app/src/main/java/com/moiseum/wolnelektury/components/ProgressRecyclerView.java
@@ -0,0 +1,141 @@
+package com.moiseum.wolnelektury.components;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.support.annotation.StringRes;
+import android.support.v7.widget.RecyclerView;
+import android.util.AttributeSet;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.FrameLayout;
+import android.widget.ImageButton;
+import android.widget.ProgressBar;
+import android.widget.TextView;
+
+import com.moiseum.wolnelektury.R;
+import com.moiseum.wolnelektury.components.recycler.RecyclerAdapter;
+
+import java.util.List;
+
+import butterknife.BindView;
+import butterknife.ButterKnife;
+import butterknife.OnClick;
+
+/**
+ * @author golonkos
+ */
+
+public class ProgressRecyclerView<T> extends FrameLayout {
+
+       public interface ProgressRecycleViewRetryListener {
+               void onRetryClicked();
+       }
+
+       @BindView(R.id.rvList)
+       RecyclerView rvList;
+       @BindView(R.id.tvEmpty)
+       TextView tvEmpty;
+       @BindView(R.id.pbLoading)
+       ProgressBar pbLoading;
+       @BindView(R.id.ibRetry)
+       ImageButton ibRetry;
+
+       private RecyclerAdapter<T, ?> adapter;
+       private ProgressRecycleViewRetryListener listener;
+
+       public ProgressRecyclerView(@NonNull Context context) {
+               this(context, null);
+       }
+
+       public ProgressRecyclerView(@NonNull Context context, @Nullable AttributeSet attrs) {
+               this(context, attrs, 0);
+       }
+
+       public ProgressRecyclerView(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
+               super(context, attrs, defStyleAttr);
+               init(attrs);
+       }
+
+       private void init(AttributeSet attrs) {
+               View view = LayoutInflater.from(getContext()).inflate(R.layout.progress_recyclerview, this, true);
+               ButterKnife.bind(this, view);
+
+               TypedArray a = getContext().obtainStyledAttributes(attrs, R.styleable.ProgressRecyclerView);
+               try {
+                       if (a.hasValue(R.styleable.ProgressRecyclerView_emptyText)) {
+                               tvEmpty.setText(a.getString(R.styleable.ProgressRecyclerView_emptyText));
+                       }
+               } finally {
+                       a.recycle();
+               }
+       }
+
+       public void setAdapter(RecyclerAdapter<T, ?> adapter) {
+               this.adapter = adapter;
+               rvList.setAdapter(adapter);
+       }
+
+       public void setItems(List<T> items) {
+               if (adapter == null) {
+                       throw new UnsupportedOperationException("Adapter not set");
+               }
+               adapter.setItems(items);
+               tvEmpty.setVisibility(items.isEmpty() ? VISIBLE : GONE);
+       }
+
+       public void addItems(List<T> items) {
+               if (adapter == null) {
+                       throw new UnsupportedOperationException("Adapter not set");
+               }
+               if (items.size() > 0) {
+                       adapter.addItems(items);
+               }
+       }
+
+       public void setProgressVisible(boolean visible) {
+               pbLoading.setVisibility(visible ? VISIBLE : GONE);
+               if (visible) {
+                       tvEmpty.setVisibility(GONE);
+               }
+       }
+
+       public void showRetryButton(ProgressRecycleViewRetryListener listener) {
+               this.listener = listener;
+               tvEmpty.setVisibility(GONE);
+               ibRetry.setVisibility(VISIBLE);
+       }
+
+       public void setEmptyText(@StringRes int stringResId) {
+               tvEmpty.setText(stringResId);
+       }
+
+       public void setLayoutManager(RecyclerView.LayoutManager layoutManager) {
+               rvList.setLayoutManager(layoutManager);
+       }
+
+       public void setHasFixedSize(boolean fixedSize) {
+               rvList.setHasFixedSize(fixedSize);
+       }
+
+       public void addOnScrollListener(RecyclerView.OnScrollListener listener) {
+               rvList.addOnScrollListener(listener);
+       }
+
+       public void removeOnScrollListener(RecyclerView.OnScrollListener listener) {
+               rvList.removeOnScrollListener(listener);
+       }
+
+       @OnClick(R.id.ibRetry)
+       public void retryButtonClick() {
+               if (listener != null) {
+                       listener.onRetryClicked();
+               }
+               ibRetry.setVisibility(GONE);
+       }
+
+       public void updateEmptyViewVisibility() {
+               tvEmpty.setVisibility(ibRetry.getVisibility() == GONE && adapter.getItems().isEmpty() ? VISIBLE : GONE);
+       }
+}