Bugfix: Prevent delete a template when has children

src/packages/templating/templates/conditions/const.ts

@@ -0,0 +1 @@
+export const UMB_TEMPLATE_HAS_NO_CHILDREN_CONDITION_ALIAS = 'Umb.Condition.TemplateHasNoChildren';

src/packages/templating/templates/conditions/index.ts

@@ -0,0 +1 @@
+export type * from './types.js';

src/packages/templating/templates/conditions/manifests.ts

@@ -0,0 +1,3 @@
+import { manifest as templateHasNoChildrenCondition } from './template-has-no-children.condition.js';
+
+export const manifests: Array<UmbExtensionManifest> = [templateHasNoChildrenCondition];

src/packages/templating/templates/conditions/template-has-no-children.condition.ts

@@ -0,0 +1,34 @@
+import { UMB_TEMPLATE_HAS_NO_CHILDREN_CONDITION_ALIAS } from './const.js';
+import type { UmbTemplateHasNoChildrenConditionConfig } from './types.js';
+import { UmbConditionBase } from '@umbraco-cms/backoffice/extension-registry';
+import { UMB_TREE_ITEM_CONTEXT } from '@umbraco-cms/backoffice/tree';
+import type { UmbConditionControllerArguments, UmbExtensionCondition } from '@umbraco-cms/backoffice/extension-api';
+import type { UmbControllerHost } from '@umbraco-cms/backoffice/controller-api';
+
+const ObserveSymbol = Symbol();
+
+export class UmbTemplateHasNoChildrenCondition
+	extends UmbConditionBase<UmbTemplateHasNoChildrenConditionConfig>
+	implements UmbExtensionCondition
+{
+	constructor(host: UmbControllerHost, args: UmbConditionControllerArguments<UmbTemplateHasNoChildrenConditionConfig>) {
+		super(host, args);
+
+		this.consumeContext(UMB_TREE_ITEM_CONTEXT, (context) => {
+			this.observe(
+				context.hasChildren,
+				(hasChildren) => {
+					this.permitted = hasChildren === false;
+				},
+				ObserveSymbol,
+			);
+		});
+	}
+}
+
+export const manifest: UmbExtensionManifest = {
+	type: 'condition',
+	name: 'Template Has No Children Condition',
+	alias: UMB_TEMPLATE_HAS_NO_CHILDREN_CONDITION_ALIAS,
+	api: UmbTemplateHasNoChildrenCondition,
+};

src/packages/templating/templates/conditions/types.ts

@@ -0,0 +1,12 @@
+import type { UMB_TEMPLATE_HAS_NO_CHILDREN_CONDITION_ALIAS } from './const.js';
+import type { UmbConditionConfigBase } from '@umbraco-cms/backoffice/extension-api';
+
+export type UmbTemplateHasNoChildrenConditionConfig = UmbConditionConfigBase<
+	typeof UMB_TEMPLATE_HAS_NO_CHILDREN_CONDITION_ALIAS
+>;
+
+declare global {
+	interface UmbExtensionConditionConfigMap {
+		umbTemplateHasNoChildren: UmbTemplateHasNoChildrenConditionConfig;
+	}
+}

src/packages/templating/templates/entity-actions/manifests.ts

@@ -1,5 +1,6 @@
 import { UMB_TEMPLATE_DETAIL_REPOSITORY_ALIAS, UMB_TEMPLATE_ITEM_REPOSITORY_ALIAS } from '../repository/index.js';
 import { UMB_TEMPLATE_ENTITY_TYPE, UMB_TEMPLATE_ROOT_ENTITY_TYPE } from '../entity.js';
+import { UMB_TEMPLATE_HAS_NO_CHILDREN_CONDITION_ALIAS } from '../conditions/const.js';
 
 export const manifests: Array<UmbExtensionManifest> = [
 	{
@@ -26,5 +27,6 @@ export const manifests: Array<UmbExtensionManifest> = [
 			detailRepositoryAlias: UMB_TEMPLATE_DETAIL_REPOSITORY_ALIAS,
 			itemRepositoryAlias: UMB_TEMPLATE_ITEM_REPOSITORY_ALIAS,
 		},
+		conditions: [{ alias: UMB_TEMPLATE_HAS_NO_CHILDREN_CONDITION_ALIAS }],
 	},
 ];

src/packages/templating/templates/index.ts

@@ -1,5 +1,6 @@
 import './global-components/index.js';
 
+export * from './conditions/index.js';
 export * from './global-components/index.js';
 export * from './entity.js';
 export * from './modals/index.js';

src/packages/templating/templates/manifests.ts

@@ -1,3 +1,4 @@
+import { manifests as conditionsManifests } from './conditions/manifests.js';
 import { manifests as entityActionsManifests } from './entity-actions/manifests.js';
 import { manifests as menuManifests } from './menu/manifests.js';
 import { manifests as modalManifests } from './modals/manifests.js';
@@ -7,6 +8,7 @@ import { manifests as treeManifests } from './tree/manifests.js';
 import { manifests as workspaceManifests } from './workspace/manifests.js';
 
 export const manifests: Array<UmbExtensionManifest> = [
+	...conditionsManifests,
 	...entityActionsManifests,
 	...menuManifests,
 	...modalManifests,