diff options
Diffstat (limited to 'app/src/main/java/de/danoeh/antennapod/view')
3 files changed, 188 insertions, 0 deletions
diff --git a/app/src/main/java/de/danoeh/antennapod/view/EmptyViewHandler.java b/app/src/main/java/de/danoeh/antennapod/view/EmptyViewHandler.java new file mode 100644 index 000000000..8b886e699 --- /dev/null +++ b/app/src/main/java/de/danoeh/antennapod/view/EmptyViewHandler.java @@ -0,0 +1,112 @@ +package de.danoeh.antennapod.view;
+
+import android.content.Context;
+import android.graphics.drawable.Drawable;
+import android.support.annotation.AttrRes;
+import android.support.v4.content.ContextCompat;
+import android.support.v7.widget.RecyclerView;
+import android.util.TypedValue;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.ListView;
+import android.widget.RelativeLayout;
+import android.widget.TextView;
+
+import de.danoeh.antennapod.R;
+
+public class EmptyViewHandler {
+ private boolean layoutAdded = false;
+ private RecyclerView recyclerView;
+ private RecyclerView.Adapter adapter;
+
+ private final Context context;
+ private final View emptyView;
+ private final TextView tvTitle;
+ private final TextView tvMessage;
+ private final ImageView ivIcon;
+
+ public EmptyViewHandler(Context context) {
+ emptyView = View.inflate(context, R.layout.empty_view_layout, null);
+ this.context = context;
+ tvTitle = emptyView.findViewById(R.id.emptyViewTitle);
+ tvMessage = emptyView.findViewById(R.id.emptyViewMessage);
+ ivIcon = emptyView.findViewById(R.id.emptyViewIcon);
+ }
+
+ public void setTitle(int title) {
+ tvTitle.setText(title);
+ }
+
+ public void setMessage(int message) {
+ tvMessage.setText(message);
+ }
+
+ public void setIcon(@AttrRes int iconAttr) {
+ TypedValue typedValue = new TypedValue();
+ context.getTheme().resolveAttribute(iconAttr, typedValue, true);
+ Drawable d = ContextCompat.getDrawable(context, typedValue.resourceId);
+ ivIcon.setImageDrawable(d);
+ ivIcon.setVisibility(View.VISIBLE);
+ }
+
+ public void hide() {
+ emptyView.setVisibility(View.GONE);
+ }
+
+ public void attachToListView(ListView listView) {
+ if (layoutAdded) {
+ throw new IllegalStateException("Can not attach to ListView multiple times");
+ }
+ layoutAdded = true;
+ ((ViewGroup) listView.getParent()).addView(emptyView);
+ listView.setEmptyView(emptyView);
+ }
+
+ public void attachToRecyclerView(RecyclerView recyclerView) {
+ if (layoutAdded) {
+ throw new IllegalStateException("Can not attach to ListView multiple times");
+ }
+ layoutAdded = true;
+ this.recyclerView = recyclerView;
+ ViewGroup parent = ((ViewGroup) recyclerView.getParent());
+ parent.addView(emptyView);
+ updateAdapter(recyclerView.getAdapter());
+
+ if (parent instanceof RelativeLayout) {
+ RelativeLayout.LayoutParams layoutParams =
+ (RelativeLayout.LayoutParams)emptyView.getLayoutParams();
+ layoutParams.addRule(RelativeLayout.CENTER_IN_PARENT, RelativeLayout.TRUE);
+ emptyView.setLayoutParams(layoutParams);
+ }
+ }
+
+ public void updateAdapter(RecyclerView.Adapter adapter) {
+ if (this.adapter != null) {
+ this.adapter.unregisterAdapterDataObserver(adapterObserver);
+ }
+ this.adapter = adapter;
+ if (adapter != null) {
+ adapter.registerAdapterDataObserver(adapterObserver);
+ }
+ updateVisibility();
+ }
+
+ private final SimpleAdapterDataObserver adapterObserver = new SimpleAdapterDataObserver() {
+ @Override
+ public void anythingChanged() {
+ updateVisibility();
+ }
+ };
+
+ private void updateVisibility() {
+ boolean empty;
+ if (adapter == null) {
+ empty = true;
+ } else {
+ empty = adapter.getItemCount() == 0;
+ }
+ recyclerView.setVisibility(empty ? View.GONE : View.VISIBLE);
+ emptyView.setVisibility(empty ? View.VISIBLE : View.GONE);
+ }
+}
diff --git a/app/src/main/java/de/danoeh/antennapod/view/SimpleAdapterDataObserver.java b/app/src/main/java/de/danoeh/antennapod/view/SimpleAdapterDataObserver.java new file mode 100644 index 000000000..45c3a35bd --- /dev/null +++ b/app/src/main/java/de/danoeh/antennapod/view/SimpleAdapterDataObserver.java @@ -0,0 +1,41 @@ +package de.danoeh.antennapod.view; + +import android.support.annotation.Nullable; +import android.support.v7.widget.RecyclerView; + +/** + * AdapterDataObserver that relays all events to the method anythingChanged(). + */ +public abstract class SimpleAdapterDataObserver extends RecyclerView.AdapterDataObserver { + public abstract void anythingChanged(); + + @Override + public void onChanged() { + anythingChanged(); + } + + @Override + public void onItemRangeChanged(int positionStart, int itemCount) { + anythingChanged(); + } + + @Override + public void onItemRangeChanged(int positionStart, int itemCount, @Nullable Object payload) { + anythingChanged(); + } + + @Override + public void onItemRangeInserted(int positionStart, int itemCount) { + anythingChanged(); + } + + @Override + public void onItemRangeMoved(int fromPosition, int toPosition, int itemCount) { + anythingChanged(); + } + + @Override + public void onItemRangeRemoved(int positionStart, int itemCount) { + anythingChanged(); + } +} diff --git a/app/src/main/java/de/danoeh/antennapod/view/WrappingGridView.java b/app/src/main/java/de/danoeh/antennapod/view/WrappingGridView.java new file mode 100644 index 000000000..37792b4d1 --- /dev/null +++ b/app/src/main/java/de/danoeh/antennapod/view/WrappingGridView.java @@ -0,0 +1,35 @@ +package de.danoeh.antennapod.view; + +import android.content.Context; +import android.util.AttributeSet; +import android.widget.GridView; + +/** + * Source: https://stackoverflow.com/a/46350213/ + */ +public class WrappingGridView extends GridView { + + public WrappingGridView(Context context) { + super(context); + } + + public WrappingGridView(Context context, AttributeSet attrs) { + super(context, attrs); + } + + public WrappingGridView(Context context, AttributeSet attrs, int defStyle) { + super(context, attrs, defStyle); + } + + @Override + protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { + int heightSpec = heightMeasureSpec; + if (getLayoutParams().height == LayoutParams.WRAP_CONTENT) { + // The great Android "hackatlon", the love, the magic. + // The two leftmost bits in the height measure spec have + // a special meaning, hence we can't use them to describe height. + heightSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST); + } + super.onMeasure(widthMeasureSpec, heightSpec); + } +} |