Add remote views sample

sample/src/main/AndroidManifest.xml

@@ -37,6 +37,7 @@
         <activity android:name=".htmldetails.HtmlDetailsActivity" />
         <activity android:name=".tasklist.TaskListActivity" />
         <activity android:name=".images.ImagesActivity" />
+        <activity android:name=".notification.NotificationActivity" />
 
     </application>
 

sample/src/main/java/io/noties/markwon/sample/MainActivity.java

@@ -28,6 +28,7 @@ import io.noties.markwon.sample.htmldetails.HtmlDetailsActivity;
 import io.noties.markwon.sample.images.ImagesActivity;
 import io.noties.markwon.sample.inlineparser.InlineParserActivity;
 import io.noties.markwon.sample.latex.LatexActivity;
+import io.noties.markwon.sample.notification.NotificationActivity;
 import io.noties.markwon.sample.precomputed.PrecomputedActivity;
 import io.noties.markwon.sample.recycler.RecyclerActivity;
 import io.noties.markwon.sample.simpleext.SimpleExtActivity;
@@ -142,6 +143,10 @@ public class MainActivity extends Activity {
                 activity = ImagesActivity.class;
                 break;
 
+            case REMOTE_VIEWS:
+                activity = NotificationActivity.class;
+                break;
+
             default:
                 throw new IllegalStateException("No Activity is associated with sample-item: " + item);
         }

sample/src/main/java/io/noties/markwon/sample/Sample.java

@@ -31,7 +31,9 @@ public enum Sample {
 
     TASK_LIST(R.string.sample_task_list),
 
-    IMAGES(R.string.sample_images);
+    IMAGES(R.string.sample_images),
+
+    REMOTE_VIEWS(R.string.sample_remote_views);
 
     private final int textResId;
 

sample/src/main/java/io/noties/markwon/sample/notification/NotificationActivity.java

@@ -0,0 +1,254 @@
+package io.noties.markwon.sample.notification;
+
+import android.app.Notification;
+import android.app.NotificationChannel;
+import android.app.NotificationManager;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Typeface;
+import android.os.Build;
+import android.text.SpannableStringBuilder;
+import android.text.Spanned;
+import android.text.style.AbsoluteSizeSpan;
+import android.text.style.BulletSpan;
+import android.text.style.DynamicDrawableSpan;
+import android.text.style.ImageSpan;
+import android.text.style.QuoteSpan;
+import android.text.style.StrikethroughSpan;
+import android.text.style.StyleSpan;
+
+import androidx.annotation.NonNull;
+
+import org.commonmark.ext.gfm.strikethrough.Strikethrough;
+import org.commonmark.node.BlockQuote;
+import org.commonmark.node.Emphasis;
+import org.commonmark.node.Heading;
+import org.commonmark.node.ListItem;
+import org.commonmark.node.StrongEmphasis;
+
+import io.noties.debug.Debug;
+import io.noties.markwon.AbstractMarkwonPlugin;
+import io.noties.markwon.Markwon;
+import io.noties.markwon.MarkwonSpansFactory;
+import io.noties.markwon.core.CoreProps;
+import io.noties.markwon.ext.strikethrough.StrikethroughPlugin;
+import io.noties.markwon.sample.ActivityWithMenuOptions;
+import io.noties.markwon.sample.MenuOptions;
+import io.noties.markwon.sample.R;
+
+public class NotificationActivity extends ActivityWithMenuOptions {
+
+    private static final String CHANNEL_ID = "whatever";
+
+    @NonNull
+    @Override
+    public MenuOptions menuOptions() {
+        return MenuOptions.create()
+                .add("bold-italic", this::bold_italic)
+                .add("heading", this::heading)
+                .add("lists", this::lists)
+                .add("image", this::image)
+                .add("link", this::link)
+                .add("blockquote", this::blockquote)
+                .add("strikethrough", this::strikethrough);
+    }
+
+    private void bold_italic() {
+        // Unfortunately we cannot just use Markwon created CharSequence in a RemoteViews context
+        //  because it requires for spans to be platform ones
+
+        final String md = "Just a **bold** here and _italic_, but what if **it is bold _and italic_**?";
+        final Markwon markwon = Markwon.builder(this)
+                .usePlugin(new AbstractMarkwonPlugin() {
+                    @Override
+                    public void configureSpansFactory(@NonNull MarkwonSpansFactory.Builder builder) {
+                        builder
+                                .setFactory(StrongEmphasis.class, (configuration, props) -> new StyleSpan(Typeface.BOLD))
+                                .setFactory(Emphasis.class, (configuration, props) -> new StyleSpan(Typeface.ITALIC));
+                    }
+                })
+                .build();
+        display(markwon.toMarkdown(md));
+    }
+
+    private void heading() {
+
+        // please note that heading doesn't seem to be working in remote views,
+        //  tried both `RelativeSizeSpan` and `AbsoluteSizeSpan` with no effect
+
+        final float base = 12;
+
+        final float[] sizes = {
+                2.F, 1.5F, 1.17F, 1.F, .83F, .67F,
+        };
+
+        final String md = "" +
+                "# H1\n" +
+                "## H2\n" +
+                "### H3\n" +
+                "#### H4\n" +
+                "##### H5\n" +
+                "###### H6\n\n";
+
+        final Markwon markwon = Markwon.builder(this)
+                .usePlugin(new AbstractMarkwonPlugin() {
+                    @Override
+                    public void configureSpansFactory(@NonNull MarkwonSpansFactory.Builder builder) {
+                        builder.setFactory(Heading.class, (configuration, props) -> {
+                            final Integer level = CoreProps.HEADING_LEVEL.get(props);
+                            Debug.i(level);
+                            if (level != null && level > 0 && level <= sizes.length) {
+//                                return new RelativeSizeSpan(sizes[level - 1]);
+                                final Object span = new AbsoluteSizeSpan((int) (base * sizes[level - 1] + .5F), true);
+                                return new Object[]{
+                                        span,
+                                        new StyleSpan(Typeface.BOLD)
+                                };
+                            }
+                            return null;
+                        });
+                    }
+                })
+                .build();
+        display(markwon.toMarkdown(md));
+    }
+
+    private void lists() {
+        final String md = "" +
+                "* bullet 1\n" +
+                "* bullet 2\n" +
+                "* * bullet 2 1\n" +
+                "  * bullet 2 0 1\n" +
+                "1) order 1\n" +
+                "1) order 2\n" +
+                "1) order 3\n";
+
+        // ordered lists _could_ be translated to raw text representation (`1.`, `1)` etc) in resulting markdown
+        //  or they could be _disabled_ all together... (can ordered lists be disabled in parser?)
+
+        final Markwon markwon = Markwon.builder(this)
+                .usePlugin(new AbstractMarkwonPlugin() {
+                    @Override
+                    public void configureSpansFactory(@NonNull MarkwonSpansFactory.Builder builder) {
+                        builder.setFactory(ListItem.class, (configuration, props) -> {
+                            final CoreProps.ListItemType type = CoreProps.LIST_ITEM_TYPE.get(props);
+                            if (type != null) {
+                                // bullet and ordered list share the same markdown node
+                                return new BulletSpan();
+                            }
+                            return null;
+                        });
+                    }
+                })
+                .build();
+
+        display(markwon.toMarkdown(md));
+    }
+
+    private void image() {
+        // please note that image _could_ be supported only if it would be available immediately
+        // debugging possibility
+        //
+        // doesn't seem to be working
+
+        final Bitmap bitmap = Bitmap.createBitmap(128, 256, Bitmap.Config.ARGB_4444);
+        final Canvas canvas = new Canvas(bitmap);
+        canvas.drawColor(0xFFAD1457);
+
+        final SpannableStringBuilder builder = new SpannableStringBuilder();
+        builder.append("An image: ");
+
+        final int length = builder.length();
+        builder.append("[bitmap]");
+        builder.setSpan(
+                new ImageSpan(this, bitmap, DynamicDrawableSpan.ALIGN_BOTTOM),
+                length,
+                builder.length(),
+                Spanned.SPAN_EXCLUSIVE_EXCLUSIVE
+        );
+
+        builder.append(" okay, and ");
+
+        final int start = builder.length();
+        builder.append("[resource]");
+        builder.setSpan(
+                new ImageSpan(this, R.drawable.ic_memory_black_48dp),
+                start,
+                builder.length(),
+                Spanned.SPAN_EXCLUSIVE_EXCLUSIVE
+        );
+
+        display(builder);
+    }
+
+    private void link() {
+        final String md = "" +
+                "[a link](https://isa.link/) is here, styling yes, clicking - no";
+        display(Markwon.create(this).toMarkdown(md));
+    }
+
+    private void blockquote() {
+        final String md = "" +
+                "> This was once said by me\n" +
+                "> > And this one also\n\n" +
+                "Me";
+        final Markwon markwon = Markwon.builder(this)
+                .usePlugin(new AbstractMarkwonPlugin() {
+                    @Override
+                    public void configureSpansFactory(@NonNull MarkwonSpansFactory.Builder builder) {
+                        builder.setFactory(BlockQuote.class, (configuration, props) -> new QuoteSpan());
+                    }
+                })
+                .build();
+        display(markwon.toMarkdown(md));
+    }
+
+    private void strikethrough() {
+        final String md = "~~strike that!~~";
+        final Markwon markwon = Markwon.builder(this)
+                .usePlugin(new StrikethroughPlugin())
+                .usePlugin(new AbstractMarkwonPlugin() {
+                    @Override
+                    public void configureSpansFactory(@NonNull MarkwonSpansFactory.Builder builder) {
+                        builder.setFactory(Strikethrough.class, (configuration, props) -> new StrikethroughSpan());
+                    }
+                })
+                .build();
+        display(markwon.toMarkdown(md));
+    }
+
+    private void display(@NonNull CharSequence cs) {
+        final NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
+        if (manager == null) {
+            throw new IllegalStateException("No NotificationManager is available");
+        }
+
+        ensureChannel(manager);
+
+        final Notification.Builder builder = new Notification.Builder(this)
+                .setSmallIcon(R.drawable.ic_stat_name)
+                .setContentTitle("Markwon")
+                .setContentText(cs)
+                .setStyle(new Notification.BigTextStyle().bigText(cs));
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            builder.setChannelId(CHANNEL_ID);
+        }
+
+        manager.notify(1, builder.build());
+    }
+
+    private void ensureChannel(@NonNull NotificationManager manager) {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
+            return;
+        }
+
+        final NotificationChannel channel = manager.getNotificationChannel(CHANNEL_ID);
+        if (channel == null) {
+            manager.createNotificationChannel(new NotificationChannel(
+                    CHANNEL_ID,
+                    CHANNEL_ID,
+                    NotificationManager.IMPORTANCE_DEFAULT));
+        }
+    }
+}

sample/src/main/res/drawable-anydpi-v24/ic_stat_name.xml

@@ -0,0 +1,13 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="26.086956"
+    android:viewportHeight="26.086956"
+    android:tint="#FFFFFF">
+  <group android:translateX="1.0434783"
+      android:translateY="1.0434783">
+      <path
+          android:fillColor="#FF000000"
+          android:pathData="M11.99,2C6.47,2 2,6.48 2,12s4.47,10 9.99,10C17.52,22 22,17.52 22,12S17.52,2 11.99,2zM12,20c-4.42,0 -8,-3.58 -8,-8s3.58,-8 8,-8 8,3.58 8,8 -3.58,8 -8,8zM15.5,11c0.83,0 1.5,-0.67 1.5,-1.5S16.33,8 15.5,8 14,8.67 14,9.5s0.67,1.5 1.5,1.5zM8.5,11c0.83,0 1.5,-0.67 1.5,-1.5S9.33,8 8.5,8 7,8.67 7,9.5 7.67,11 8.5,11zM12,17.5c2.33,0 4.31,-1.46 5.11,-3.5L6.89,14c0.8,2.04 2.78,3.5 5.11,3.5z"/>
+  </group>
+</vector>

sample/src/main/res/values/strings-samples.xml

@@ -35,4 +35,6 @@
 
     <string name="sample_images"># \# Images\n\nUsage of different images plugins</string>
 
+    <string name="sample_remote_views"># \# Notification\n\nExample usage in notifications and other remote views</string>
+
 </resources>