add setting to exclude apps from shortcuts search

core/ktx/src/main/java/de/mm20/launcher2/ktx/UserHandle.kt

@@ -5,7 +5,11 @@ import android.os.Process
 import android.os.UserHandle
 import android.os.UserManager
 
+private val cache = mutableMapOf<Int, Long>()
+
 fun UserHandle.getSerialNumber(context: Context): Long {
-    val userManager = context.getSystemService(Context.USER_SERVICE) as UserManager
-    return userManager.getSerialNumberForUser(this)
+    return cache.getOrPut(hashCode()) {
+        val userManager = context.getSystemService(Context.USER_SERVICE) as UserManager
+        userManager.getSerialNumberForUser(this)
+    }
 }

core/preferences/src/main/java/de/mm20/launcher2/preferences/LauncherSettingsData.kt

@@ -87,6 +87,7 @@ data class LauncherSettingsData internal constructor(
     val calendarSearchExcludedCalendars: Set<String> = setOf(),
 
     val shortcutSearchEnabled: Boolean = true,
+    val shortcutSearchBlocklist: Set<String> = setOf(),
 
     val calculatorEnabled: Boolean = true,
 

core/preferences/src/main/java/de/mm20/launcher2/preferences/search/ShortcutSearchSettings.kt

@@ -10,9 +10,22 @@ class ShortcutSearchSettings internal constructor(
     val enabled
         get() = dataStore.data.map { it.shortcutSearchEnabled }.distinctUntilChanged()
 
+    /**
+     * Set of blocked packages that should not be shown in the search results.
+     * Format: packageName:userId
+     */
+    val blocklist
+        get() = dataStore.data.map { it.shortcutSearchBlocklist }.distinctUntilChanged()
+
     fun setEnabled(enabled: Boolean) {
         dataStore.update {
             it.copy(shortcutSearchEnabled = enabled)
         }
     }
+
+    fun setBlocklist(blocklist: Set<String>) {
+        dataStore.update {
+            it.copy(shortcutSearchBlocklist = blocklist)
+        }
+    }
 }