1 files changed, 119 insertions, 0 deletions
diff --git a/app/src/main/java/mygram/droid/HomeRows.java b/app/src/main/java/mygram/droid/HomeRows.java
new file mode 100644
index 0000000..ed638b6
--- /dev/null
+++ b/app/src/main/java/mygram/droid/HomeRows.java
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+/*
+ * mygram-droid: Android TV client for Foldergram.
+ * Copyright (C) 2026 Danilo M. <danix@danix.xyz>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ */
+
+
+package mygram.droid;
+
+import android.app.Activity;
+import android.content.Context;
+import android.view.ViewGroup;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import androidx.recyclerview.widget.RecyclerView;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/** Home: one row per folder, a random sample of its posts, then a Continue tile. */
+final class HomeRows extends RecyclerView.Adapter<HomeRows.Row> {
+	private static final int SAMPLE = 10;
+
+	static final class Row extends RecyclerView.ViewHolder {
+		final TextView title;
+		final RecyclerView tiles;
+
+		Row(LinearLayout v, TextView title, RecyclerView tiles) {
+			super(v);
+			this.title = title;
+			this.tiles = tiles;
+		}
+	}
+
+	private final Activity activity;
+	private final List<Api.Folder> folders;
+	private final Map<String, List<Post>> samples = new HashMap<>();
+
+	HomeRows(Activity activity, List<Api.Folder> folders) {
+		this.activity = activity;
+		this.folders = folders;
+	}
+
+	@Override
+	public Row onCreateViewHolder(ViewGroup parent, int type) {
+		Context c = parent.getContext();
+		LinearLayout v = new LinearLayout(c);
+		v.setOrientation(LinearLayout.VERTICAL);
+		v.setLayoutParams(new RecyclerView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
+				ViewGroup.LayoutParams.WRAP_CONTENT));
+		TextView title = Ui.text(c, "", 18);
+		title.setPadding(Ui.dp(c, 36), Ui.dp(c, 16), 0, 0);
+		v.addView(title);
+		RecyclerView tiles = Ui.list(c, RecyclerView.HORIZONTAL);
+		v.addView(tiles, new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
+				Ui.dp(c, Ui.POST_H + 24)));
+		return new Row(v, title, tiles);
+	}
+
+	@Override
+	public void onBindViewHolder(Row row, int position) {
+		Api.Folder f = folders.get(position);
+		row.title.setText(f.name);
+		List<Post> posts = samples.get(f.slug);
+		if (posts == null) {
+			posts = List.of();
+			samples.put(f.slug, posts); // marks it loading, so it is fetched once
+			Api.async(() -> Api.folderSample(f, SAMPLE), p -> {
+				samples.put(f.slug, p);
+				notifyItemChanged(folders.indexOf(f));
+			}, e -> {
+				// the row keeps only its Continue tile
+			});
+		}
+		List<TileAdapter.Tile> tiles = new ArrayList<>();
+		for (Post p : posts)
+			tiles.add(TileAdapter.post(p, () -> open(f, p)));
+		tiles.add(new TileAdapter.Tile(null, "Continue", R.drawable.ic_arrow_forward, -1,
+				() -> FolderActivity.open(activity, f)));
+		row.tiles.setAdapter(new TileAdapter(tiles, Ui.POST_W, Ui.POST_H));
+	}
+
+	@Override
+	public int getItemCount() {
+		return folders.size();
+	}
+
+	/** Viewer at p, then the rest of the folder, shuffled. */
+	private void open(Api.Folder f, Post p) {
+		Api.async(() -> Api.folderPosts(f.slug), all -> {
+			Collections.shuffle(all);
+			all.removeIf(x -> x.id == p.id);
+			all.add(0, p);
+			Playlist.open(activity, all, 0);
+		}, e -> Toast.makeText(activity, "Cannot load folder: " + e.getMessage(), Toast.LENGTH_LONG).show());
+	}
+
+	/** Rebinds visible tiles so hearts follow likes changed in the viewer. */
+	void refreshHearts(RecyclerView list) {
+		for (int i = 0; i < list.getChildCount(); i++) {
+			RecyclerView.Adapter<?> a = ((Row) list.getChildViewHolder(list.getChildAt(i))).tiles.getAdapter();
+			if (a != null)
+				a.notifyItemRangeChanged(0, a.getItemCount());
+		}
+	}
+}