feat: enhance clipboard image handling and share functionality in Android app

android/app/src/main/java/com/paarrot/app/ImageKeyboardContentReceiver.kt

@@ -0,0 +1,32 @@
+package com.paarrot.app
+
+import android.net.Uri
+import android.view.View
+import androidx.core.view.ContentInfoCompat
+import androidx.core.view.OnReceiveContentListener
+
+/**
+ * Receives rich content from the IME (Gboard GIF), clipboard paste, and drag-drop,
+ * then forwards file URIs through [ShareIntentStore] so JS can attach them in-room.
+ */
+class ImageKeyboardContentReceiver : OnReceiveContentListener {
+
+    override fun onReceiveContent(view: View, payload: ContentInfoCompat): ContentInfoCompat? {
+        val split = payload.partition { item -> item.uri != null }
+        val uriContent = split.first
+        val remaining = split.second
+
+        if (uriContent != null) {
+            val uris = mutableListOf<Uri>()
+            val clip = uriContent.clip
+            for (i in 0 until clip.itemCount) {
+                clip.getItemAt(i).uri?.let { uris.add(it) }
+            }
+            if (uris.isNotEmpty()) {
+                ShareIntentStore.handleContentUris(view.context, uris)
+            }
+        }
+
+        return remaining
+    }
+}

android/app/src/main/java/com/paarrot/app/ImageKeyboardWebView.kt

@@ -0,0 +1,38 @@
+package com.paarrot.app
+
+import android.content.Context
+import android.util.AttributeSet
+import android.view.inputmethod.EditorInfo
+import android.view.inputmethod.InputConnection
+import androidx.core.view.inputmethod.EditorInfoCompat
+import androidx.core.view.inputmethod.InputConnectionCompat
+import com.getcapacitor.CapacitorWebView
+
+/**
+ * Capacitor WebView that advertises image/video MIME types to the IME
+ * (Gboard GIF/sticker keyboard) and routes commit-content through
+ * [androidx.core.view.ViewCompat.setOnReceiveContentListener].
+ */
+class ImageKeyboardWebView(
+    context: Context,
+    attrs: AttributeSet?,
+) : CapacitorWebView(context, attrs) {
+
+    override fun onCreateInputConnection(outAttrs: EditorInfo): InputConnection? {
+        val inputConnection = super.onCreateInputConnection(outAttrs) ?: return null
+        EditorInfoCompat.setContentMimeTypes(outAttrs, MIME_TYPES)
+        return InputConnectionCompat.createWrapper(this, inputConnection, outAttrs)
+    }
+
+    companion object {
+        @JvmField
+        val MIME_TYPES: Array<String> = arrayOf(
+            "image/*",
+            "image/png",
+            "image/gif",
+            "image/jpeg",
+            "image/webp",
+            "video/*",
+        )
+    }
+}

android/app/src/main/java/com/paarrot/app/MainActivity.java

@@ -1,6 +1,8 @@
 package com.paarrot.app;
 
 import android.os.Bundle;
+import android.webkit.WebView;
+import androidx.core.view.ViewCompat;
 import com.getcapacitor.BridgeActivity;
 
 public class MainActivity extends BridgeActivity {
@@ -10,5 +12,18 @@ public class MainActivity extends BridgeActivity {
         registerPlugin(ShareHandlerPlugin.class);
         registerPlugin(PluginStoragePlugin.class);
         super.onCreate(savedInstanceState);
+        setupImageKeyboardSupport();
     }
-}
+
+    /** Advertise image MIME types and receive Gboard / paste / drag-drop media. */
+    private void setupImageKeyboardSupport() {
+        if (bridge == null) return;
+        WebView webView = bridge.getWebView();
+        if (webView == null) return;
+        ViewCompat.setOnReceiveContentListener(
+            webView,
+            ImageKeyboardWebView.MIME_TYPES,
+            new ImageKeyboardContentReceiver()
+        );
+    }
+}

android/app/src/main/java/com/paarrot/app/ShareHandlerPlugin.kt

@@ -62,7 +62,6 @@ object ShareIntentStore {
 
         if (action != Intent.ACTION_SEND && action != Intent.ACTION_SEND_MULTIPLE) return
 
-        val receivedAt = System.currentTimeMillis()
         val text = intent.getStringExtra(Intent.EXTRA_TEXT)
         val subject = intent.getStringExtra(Intent.EXTRA_SUBJECT)
 
@@ -86,8 +85,29 @@ object ShareIntentStore {
             uri?.let { uris.add(it) }
         }
 
+        deliverShare(context, uris, text, subject)
+    }
+
+    /**
+     * Deliver content URIs from the IME (Gboard GIF), clipboard paste, or drag-drop
+     * into the same share pipeline used by ACTION_SEND.
+     */
+    fun handleContentUris(context: Context, uris: List<Uri>) {
+        if (uris.isEmpty()) return
+        deliverShare(context, uris, text = null, subject = null)
+    }
+
+    private fun deliverShare(
+        context: Context,
+        uris: List<Uri>,
+        text: String?,
+        subject: String?,
+    ) {
+        val receivedAt = System.currentTimeMillis()
         val copiedFiles = uris.mapNotNull { copySharedUri(context, it, receivedAt) }
 
+        if (copiedFiles.isEmpty() && text.isNullOrBlank() && subject.isNullOrBlank()) return
+
         val payload = SharePayload(
             text = text,
             subject = subject,

android/app/src/main/res/layout/capacitor_bridge_layout_main.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context="com.getcapacitor.BridgeActivity">
+
+    <com.paarrot.app.ImageKeyboardWebView
+        android:id="@+id/webview"
+        android:layout_width="fill_parent"
+        android:layout_height="fill_parent" />
+
+</androidx.coordinatorlayout.widget.CoordinatorLayout>