add cancel all function

Signed-off-by: alperozturk <[email protected]>

Author: alperozturk96

app/src/main/java/com/nextcloud/client/jobs/gallery/GalleryImageGenerationJob.kt

@@ -40,7 +40,12 @@ class GalleryImageGenerationJob(private val user: User, private val storageManag
         )
         private val activeJobs = WeakHashMap<ImageView, Job>()
 
-        fun getActiveJobs(): WeakHashMap<ImageView, Job> = activeJobs
+        fun cancelAllActiveJobs() {
+            for ((_, job) in activeJobs) {
+                job.cancel()
+            }
+            activeJobs.clear()
+        }
 
         fun removeActiveJob(imageView: ImageView, job: CoroutineScope) {
             if (isActiveJob(imageView, job)) {

app/src/main/java/com/owncloud/android/ui/adapter/OCFileListDelegate.kt

@@ -414,13 +414,7 @@ class OCFileListDelegate(
     fun cleanup() {
         ioScope.cancel()
 
-        val activeJobs = GalleryImageGenerationJob.getActiveJobs()
-
-        // Cancel all pending thumbnail/generation jobs for gallery images
-        for ((_, job) in activeJobs) {
-            job.cancel()
-        }
-        activeJobs.clear()
+        GalleryImageGenerationJob.cancelAllActiveJobs()
 
         // cancel async tasks from ThumbnailsCacheManager
         cancelAllPendingTasks()