Rewrite migration, shove all logic into a presenter instead of the UI

2022-09-04 19:10:30 -04:00
parent 6e1e42fefd
commit 96f24e0600
12 changed files with 768 additions and 759 deletions
@@ -1,57 +0,0 @@
-package exh.util
-
-import kotlinx.coroutines.sync.Mutex
-import kotlinx.coroutines.sync.withLock
-
-/**
- * Field that can be initialized later. Users can suspend while waiting for the field to initialize.
- *
- * @author nulldev
- */
-class DeferredField<T> {
-
-    @Volatile
-    var content: T? = null
-
-    @Volatile
-    var initialized = false
-        private set
-
-    private val mutex = Mutex(true)
-
-    /**
-     * Initialize the field
-     */
-    fun initialize(content: T) {
-        // Fast-path new listeners
-        this.content = content
-        initialized = true
-
-        // Notify current listeners
-        mutex.unlock()
-    }
-
-    fun set(content: T) {
-        mutex.tryLock()
-        this.content = content
-        initialized = true
-        // Notify current listeners
-        mutex.unlock()
-    }
-
-    /**
-     * Will only suspend if !initialized.
-     */
-    suspend fun get(): T {
-        // Check if field is initialized and return immediately if it is
-        @Suppress("UNCHECKED_CAST")
-        if (initialized) return content as T
-
-        // Wait for field to initialize
-        mutex.withLock {}
-
-        // Field is initialized, return value
-        @Suppress("UNCHECKED_CAST")
-        return content as T
-    }
-}