1 files changed, 132 insertions, 0 deletions
diff --git a/app/src/main/java/de/danoeh/antennapod/ui/CoverLoader.java b/app/src/main/java/de/danoeh/antennapod/ui/CoverLoader.java
new file mode 100644
index 000000000..370a15919
--- /dev/null
+++ b/app/src/main/java/de/danoeh/antennapod/ui/CoverLoader.java
@@ -0,0 +1,132 @@
+package de.danoeh.antennapod.ui;
+
+import android.graphics.drawable.Drawable;
+import android.view.View;
+import android.widget.ImageView;
+import android.widget.TextView;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import com.bumptech.glide.Glide;
+import com.bumptech.glide.RequestBuilder;
+import com.bumptech.glide.request.RequestOptions;
+import com.bumptech.glide.request.target.CustomViewTarget;
+import com.bumptech.glide.request.transition.Transition;
+
+import java.lang.ref.WeakReference;
+
+public class CoverLoader {
+    private int resource = 0;
+    private String uri;
+    private String fallbackUri;
+    private ImageView imgvCover;
+    private boolean textAndImageCombined;
+    private TextView fallbackTitle;
+
+    public CoverLoader() {
+    }
+
+    public CoverLoader withUri(String uri) {
+        this.uri = uri;
+        return this;
+    }
+
+    public CoverLoader withResource(int resource) {
+        this.resource = resource;
+        return this;
+    }
+
+    public CoverLoader withFallbackUri(String uri) {
+        fallbackUri = uri;
+        return this;
+    }
+
+    public CoverLoader withCoverView(ImageView coverView) {
+        imgvCover = coverView;
+        return this;
+    }
+
+    public CoverLoader withPlaceholderView(TextView title) {
+        this.fallbackTitle = title;
+        return this;
+    }
+
+    /**
+     * Set cover text and if it should be shown even if there is a cover image.
+     * @param fallbackTitle Fallback title text
+     * @param textAndImageCombined Show cover text even if there is a cover image?
+     */
+    @NonNull
+    public CoverLoader withPlaceholderView(TextView fallbackTitle, boolean textAndImageCombined) {
+        this.fallbackTitle = fallbackTitle;
+        this.textAndImageCombined = textAndImageCombined;
+        return this;
+    }
+
+    public void load() {
+        CoverTarget coverTarget = new CoverTarget(fallbackTitle, imgvCover, textAndImageCombined);
+
+        if (resource != 0) {
+            Glide.with(imgvCover).clear(coverTarget);
+            imgvCover.setImageResource(resource);
+            CoverTarget.setTitleVisibility(fallbackTitle, textAndImageCombined);
+            return;
+        }
+
+        RequestOptions options = new RequestOptions()
+                .fitCenter()
+                .dontAnimate();
+
+        RequestBuilder<Drawable> builder = Glide.with(imgvCover)
+                .as(Drawable.class)
+                .load(uri)
+                .apply(options);
+
+        if (fallbackUri != null) {
+            builder = builder.error(Glide.with(imgvCover)
+                    .as(Drawable.class)
+                    .load(fallbackUri)
+                    .apply(options));
+        }
+
+        builder.into(coverTarget);
+    }
+
+    static class CoverTarget extends CustomViewTarget<ImageView, Drawable> {
+        private final WeakReference<TextView> fallbackTitle;
+        private final WeakReference<ImageView> cover;
+        private final boolean textAndImageCombined;
+
+        public CoverTarget(TextView fallbackTitle, ImageView coverImage, boolean textAndImageCombined) {
+            super(coverImage);
+            this.fallbackTitle = new WeakReference<>(fallbackTitle);
+            this.cover = new WeakReference<>(coverImage);
+            this.textAndImageCombined = textAndImageCombined;
+        }
+
+        @Override
+        public void onLoadFailed(Drawable errorDrawable) {
+            setTitleVisibility(fallbackTitle.get(), true);
+        }
+
+        @Override
+        public void onResourceReady(@NonNull Drawable resource,
+                                    @Nullable Transition<? super Drawable> transition) {
+            ImageView ivCover = cover.get();
+            ivCover.setImageDrawable(resource);
+            setTitleVisibility(fallbackTitle.get(), textAndImageCombined);
+        }
+
+        @Override
+        protected void onResourceCleared(@Nullable Drawable placeholder) {
+            ImageView ivCover = cover.get();
+            ivCover.setImageDrawable(placeholder);
+            setTitleVisibility(fallbackTitle.get(),  textAndImageCombined);
+        }
+
+        static void setTitleVisibility(TextView fallbackTitle, boolean textAndImageCombined) {
+            if (fallbackTitle != null) {
+                fallbackTitle.setVisibility(textAndImageCombined ? View.VISIBLE : View.GONE);
+            }
+        }
+    }
+}
+\ No newline at end of file