1 files changed, 51 insertions, 0 deletions
diff --git a/app/src/main/java/mygram/droid/FolderActivity.java b/app/src/main/java/mygram/droid/FolderActivity.java
index d53588a..8da2533 100644
--- a/app/src/main/java/mygram/droid/FolderActivity.java
+++ b/app/src/main/java/mygram/droid/FolderActivity.java
@@ -12,9 +12,60 @@
  * for more details.
  */
 
+
 package mygram.droid;
 
 import android.app.Activity;
+import android.content.Context;
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.ViewGroup;
+import android.widget.FrameLayout;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+
+import androidx.recyclerview.widget.RecyclerView;
 
+import java.util.Collections;
+
+/** One folder as a grid, shuffled once per open. */
 public final class FolderActivity extends Activity {
+	private FrameLayout content;
+	private RecyclerView grid;
+
+	static void open(Context c, Api.Folder f) {
+		c.startActivity(new Intent(c, FolderActivity.class).putExtra("slug", f.slug).putExtra("name", f.name));
+	}
+
+	@Override
+	protected void onCreate(Bundle state) {
+		super.onCreate(state);
+		LinearLayout column = new LinearLayout(this);
+		column.setOrientation(LinearLayout.VERTICAL);
+		TextView title = Ui.text(this, getIntent().getStringExtra("name"), 24);
+		title.setPadding(Ui.dp(this, 36), Ui.dp(this, 24), 0, 0);
+		column.addView(title);
+		content = new FrameLayout(this);
+		column.addView(content, new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 0, 1));
+		setContentView(column);
+		show(Ui.text(this, "Loading…", 18));
+		Api.async(() -> Api.folderPosts(getIntent().getStringExtra("slug")), posts -> {
+			Collections.shuffle(posts);
+			grid = Ui.grid(this, Ui.postTiles(this, posts), Ui.POST_W, Ui.POST_H, 6);
+			show(grid);
+			grid.requestFocus();
+		}, e -> show(Ui.text(this, "Cannot load folder: " + e.getMessage(), 18)));
+	}
+
+	@Override
+	protected void onResume() {
+		super.onResume();
+		if (grid != null && grid.getAdapter() != null)
+			grid.getAdapter().notifyItemRangeChanged(0, grid.getAdapter().getItemCount());
+	}
+
+	private void show(android.view.View v) {
+		content.removeAllViews();
+		content.addView(v);
+	}
 }