Modification events

Modification events are used to signal to parts of the Addressables system when certain data is manipulated, such as an AddressableAssetGroup or an AddressableAssetEntry getting added or removed.

Modification events are triggered as part of SetDirty calls inside of Addressables. SetDirty is used to indicate when an asset needs to be re-serialized by the AssetDatabase. As part of this SetDirty, two modification event callbacks can trigger:

• public static event Action<AddressableAssetSettings, ModificationEvent, object> OnModificationGlobal
• public Action<AddressableAssetSettings, ModificationEvent, object> OnModification { get; set; }

which can be found on AddressableAssetSettings through a static, or instance, accessors respectively.

Code Samples

AddressableAssetSettings.OnModificationGlobal += (settings, modificationEvent, data) =>
        {
            if(modificationEvent == AddressableAssetSettings.ModificationEvent.EntryAdded)
            {
                //Do work
            }
        };

        AddressableAssetSettingsDefaultObject.Settings.OnModification += (settings, modificationEvent, data) =>
        {
            if (modificationEvent == AddressableAssetSettings.ModificationEvent.EntryAdded)
            {
                //Do work
            }
        };

Modification events pass in a generic object for the data associated with the event. Below is a list of the modification events and the data types that are passed with them.

The Data Passed with Each ModificationEvent:

• GroupAdded The data passed with this event is the AddressableAssetGroup, or list of groups, that were added.
• GroupRemoved The data passed with this event is the AddressableAssetGroup, or list of groups, that were removed.
• GroupRenamed The data passed with this event is the AddressableAssetGroup, or list of groups, that were renamed.
• GroupSchemaAdded The data passed with this event is the AddressableAssetGroup, or list of groups, that had schemas added to them.
• GroupSchemaRemoved The data passed with this event is the AddressableAssetGroup, or list of groups, that had schemas removed from them.
• GroupSchemaModified The data passed with this event is the AddressableAssetGroupSchema that was modified.
• GroupTemplateAdded The data passed with this event is the ScriptableObject, typically one that implements IGroupTemplate, that was the added Group Template object.
• GroupTemplateRemoved The data passed with this event is the ScriptableObject, typically one that implements IGroupTemplate, that was the removed Group Template object.
• GroupTemplateSchemaAdded The data passed with this event is the AddressableAssetGroupTemplate that had a schema added.
• GroupTemplateSchemaRemoved The data passed with this event is the AddressableAssetGroupTemplate that had a schema removed.
• EntryCreated The data passed with this event is the AddressableAssetEntry that was created.
• EntryAdded The data passed with this event is the AddressableAssetEntry, or list of entries, that were added.
• EntryMoved The data passed with this event is the AddressableAssetEntry, or list of entries, that were moved from one group to another.
• EntryRemoved The data passed with this event is the AddressableAssetEntry, or list of entries, that were removed.
• LabelAdded The data passed with this event is the string label that was added.
• LabelRemoved The data passed with this event is the string label that was removed.
• ProfileAdded The data passed with this event is [BuildProfile] that was added.
• ProfileRemoved The data passed with this event is the string of the profile ID that was removed.
• ProfileModified The data passed with this event is [BuildProfile] that was modified, or null if a batch of BuildProfiles were modified.
• ActiveProfileSet The data passed with this event if the string of the profile ID that is set as the active profile.
• EntryModified The data passed with this event is the AddressableAssetEntry, or list of entries, that were modified.
• BuildSettingsChanged The data passed with this event is the AddressableAssetBuildSettings object that was modified.
• ActiveBuildScriptChanged The data passed with this event is the IDataBuilder build script that was set as the active builder.
• DataBuilderAdded The data passed with this event is the ScriptableObject, typically one that implements IDataBuilder, that was added to the list of DataBuilders.
• DataBuilderRemoved The data passed with this event is the ScriptableObject, typically one that implements IDataBuilder, that was removed from the list of DataBuilders.
• InitializationObjectAdded The data passed with this event is the ScriptableObject, typically one that implements IObjectInitializationDataProvider, that was added to the list of InitializationObjects.
• InitializationObjectRemoved The data passed with this event is the ScriptableObject, typically one that implements IObjectInitializationDataProvider, that was removed from the list of InitializationObjects.
• ActivePlayModeScriptChanged The data passed with this event is the IDataBuilder that was set as the new active play mode data builder.
• BatchModification The data passed with this event is null. This event is primarily used to indicate several modification events happening at the same time and the AddressableAssetSettings object needed to be marked dirty.
• HostingServicesManagerModified The data passed is either going to be the HostingServicesManager, or the HttpHostingService that were modified.
• GroupMoved The data passed with this event is the full list of AddressableAssetGroups.
• CertificateHandlerChanged The data passed with this event is the new System.Type of the Certificate Handler to be used.