Glimpse: Implement ACTION_SET_WALLPAPER

Change-Id: I1a12a7a0a690ac887200bf08e03552b20d7a55f5

app/src/main/AndroidManifest.xml

@@ -97,6 +97,12 @@
                 <data android:mimeType="vnd.android.cursor.dir/video" />
             </intent-filter>
 
+            <intent-filter>
+                <action android:name="android.intent.action.SET_WALLPAPER" />
+
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+
         </activity>
 
     </application>

app/src/main/java/org/lineageos/glimpse/PickerActivity.kt

@@ -45,7 +45,7 @@ class PickerActivity : AppCompatActivity(R.layout.activity_picker) {
             return
         }
 
-        val mimeType = PickerUtils.translateMimeType(intent.type) ?: run {
+        val mimeType = PickerUtils.translateMimeType(intent) ?: run {
             Toast.makeText(
                 this, R.string.intent_media_type_not_supported, Toast.LENGTH_SHORT
             ).show()
@@ -79,6 +79,7 @@ class PickerActivity : AppCompatActivity(R.layout.activity_picker) {
         private val supportedIntentActions = listOf(
             Intent.ACTION_GET_CONTENT,
             Intent.ACTION_PICK,
+            Intent.ACTION_SET_WALLPAPER,
         )
     }
 }

app/src/main/java/org/lineageos/glimpse/fragments/picker/AlbumSelectorFragment.kt

@@ -43,7 +43,7 @@ class AlbumSelectorFragment : Fragment(R.layout.fragment_picker_album_selector)
     private val albumsRecyclerView by getViewProperty<RecyclerView>(R.id.albumsRecyclerView)
 
     // Intent data
-    private val mimeType by lazy { PickerUtils.translateMimeType(activity?.intent?.type) }
+    private val mimeType by lazy { PickerUtils.translateMimeType(activity?.intent) }
 
     // Recyclerview
     private val albumThumbnailAdapter by lazy {

app/src/main/java/org/lineageos/glimpse/fragments/picker/MediaSelectorFragment.kt

@@ -6,6 +6,7 @@
 package org.lineageos.glimpse.fragments.picker
 
 import android.app.Activity
+import android.app.WallpaperManager
 import android.content.ClipData
 import android.content.Intent
 import android.os.Bundle
@@ -15,6 +16,7 @@ import android.view.MenuItem
 import android.view.View
 import android.view.ViewGroup
 import android.widget.LinearLayout
+import android.widget.Toast
 import androidx.core.os.bundleOf
 import androidx.core.view.ViewCompat
 import androidx.core.view.WindowInsetsCompat
@@ -63,11 +65,16 @@ class MediaSelectorFragment : Fragment(R.layout.fragment_picker_media_selector)
     private val mediasRecyclerView by getViewProperty<RecyclerView>(R.id.mediasRecyclerView)
     private val noMediaLinearLayout by getViewProperty<LinearLayout>(R.id.noMediaLinearLayout)
 
+    // System services
+    private val wallpaperManager by lazy {
+        requireContext().getSystemService(WallpaperManager::class.java)
+    }
+
     // Arguments
     private val bucketId by lazy { arguments?.getInt(KEY_BUCKET_ID) }
 
     // Intent data
-    private val mimeType by lazy { PickerUtils.translateMimeType(activity?.intent?.type) }
+    private val mimeType by lazy { PickerUtils.translateMimeType(activity?.intent) }
 
     // Recyclerview
     private val thumbnailAdapter by lazy {
@@ -242,13 +249,17 @@ class MediaSelectorFragment : Fragment(R.layout.fragment_picker_media_selector)
      * @param medias The selected medias
      */
     private fun sendResult(vararg medias: MediaStoreMedia) {
-        activity?.let {
-            it.setResult(
+        val activity = activity ?: return
+        val intent = activity.intent ?: return
+
+        when (intent.action) {
+            Intent.ACTION_GET_CONTENT,
+            Intent.ACTION_PICK -> activity.setResult(
                 Activity.RESULT_OK,
                 Intent().apply {
                     if (allowMultipleSelection) {
                         clipData = ClipData.newUri(
-                            it.contentResolver, "", medias.first().uri
+                            activity.contentResolver, "", medias.first().uri
                         ).also { clipData ->
                             for (media in 1 until medias.size) {
                                 clipData.addItem(
@@ -267,19 +278,42 @@ class MediaSelectorFragment : Fragment(R.layout.fragment_picker_media_selector)
                     flags = Intent.FLAG_GRANT_READ_URI_PERMISSION
                 }
             )
+            Intent.ACTION_SET_WALLPAPER -> {
+                require(medias.size == 1) {
+                    "More than one media provided when only one was requested"
+                }
 
-            it.finish()
+                runCatching {
+                    wallpaperManager.getCropAndSetWallpaperIntent(
+                        medias.first().uri
+                    )
+                }.getOrNull()?.also {
+                    activity.startActivity(it)
+                } ?: Toast.makeText(
+                    activity,
+                    R.string.intent_no_system_wallpaper_cropper_available,
+                    Toast.LENGTH_LONG,
+                ).show()
+            }
+            else -> throw Exception("Unknown action")
         }
+
+        activity.finish()
     }
 
     /**
      * Whether we can provide multiple items or only one.
      * @see Intent.EXTRA_ALLOW_MULTIPLE
      */
     private val allowMultipleSelection: Boolean
-        get() = activity?.intent?.extras?.getBoolean(
-            Intent.EXTRA_ALLOW_MULTIPLE, false
-        ) ?: false
+        get() = activity?.intent?.let { intent ->
+            when (intent.action) {
+                Intent.ACTION_GET_CONTENT -> intent.extras?.getBoolean(
+                    Intent.EXTRA_ALLOW_MULTIPLE, false
+                )
+                else -> false
+            }
+        } ?: false
 
     companion object {
         private const val KEY_BUCKET_ID = "bucket_id"

app/src/main/java/org/lineageos/glimpse/utils/PickerUtils.kt

@@ -15,20 +15,23 @@ object PickerUtils {
     private const val MIME_TYPE_ANY = "*/*"
 
     /**
-     * Fix-up a MIME type coming from an [Intent].
-     * @param mimeType A MIME type coming from an [Intent]
+     * Get a fixed up MIME type from an [Intent].
+     * @param intent An [Intent]
      * @return A simpler MIME type, null if not supported
      */
-    fun translateMimeType(mimeType: String?) = (mimeType ?: MIME_TYPE_ANY).let {
-        when (it) {
-            MediaStore.Images.Media.CONTENT_TYPE -> MIME_TYPE_IMAGE_ANY
-            MediaStore.Video.Media.CONTENT_TYPE -> MIME_TYPE_VIDEO_ANY
-            else -> when {
-                it == MIME_TYPE_ANY
-                        || it.startsWith("image/")
-                        || it.startsWith("video/") -> it
+    fun translateMimeType(intent: Intent?) = when (intent?.action) {
+        Intent.ACTION_SET_WALLPAPER -> MIME_TYPE_IMAGE_ANY
+        else -> (intent?.type ?: MIME_TYPE_ANY).let {
+            when (it) {
+                MediaStore.Images.Media.CONTENT_TYPE -> MIME_TYPE_IMAGE_ANY
+                MediaStore.Video.Media.CONTENT_TYPE -> MIME_TYPE_VIDEO_ANY
+                else -> when {
+                    it == MIME_TYPE_ANY
+                            || it.startsWith("image/")
+                            || it.startsWith("video/") -> it
 
-                else -> null
+                    else -> null
+                }
             }
         }
     }

app/src/main/res/values/strings.xml

@@ -81,11 +81,12 @@
     <string name="media_info_location_loading_placeholder">Loading…</string>
     <string name="media_info_location_open_with">View the location with</string>
 
-    <!-- View activity -->
+    <!-- Intents handling -->
     <string name="intent_action_not_supported">Action not supported</string>
     <string name="intent_media_not_found">Media not found</string>
     <string name="intent_media_type_not_found">Media type not found</string>
     <string name="intent_media_type_not_supported">Media type not supported</string>
+    <string name="intent_no_system_wallpaper_cropper_available">No system cropper available</string>
 
     <!-- File actions -->
     <string name="file_action_add_to_favorites">Add to favorites</string>