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/*-
* ============LICENSE_START=======================================================
* SDC
* ================================================================================
* Copyright (C) 2021 Nordix Foundation. All rights reserved.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END=========================================================
*/
import {Injectable} from '@angular/core';
import {AttributeFEModel} from "../../../../models/attributes-outputs/attribute-fe-model";
import {SimpleFlatAttribute} from "app/models/attributes-outputs/simple-flat-attribute";
import {DerivedFEAttribute} from "../../../../models/attributes-outputs/derived-fe-attribute";
@Injectable()
export class HierarchyNavService {
/**
* Build hierarchy structure for the tree when user selects on table row.
* First create Array<SimpleFlatAttribute> and insert also the parent (AttributeFEModel) to this array.
* The Array is flat and contains SimpleFlatAttribute that has parentName and uniqueId.
* Now we build hierarchy from this Array (that includes children) and return it for the tree
*
* @argument attribute: AttributeFEModel - attribute contains flattenedChildren array of DerivedFEAttribute
* @returns Array<SimpleFlatAttribute> - containing children Array<SimpleFlatAttribute>, augmantin children to SimpleFlatAttribute.
*/
public getSimpleAttributesTree(attribute: AttributeFEModel, instanceName: string): Array<SimpleFlatAttribute> {
// Build Array of SimpleFlatAttribute before unflatten function
let flatAttributes: Array<SimpleFlatAttribute> = [];
flatAttributes.push(this.createSimpleFlatAttribute(attribute, instanceName)); // Push the root attribute
attribute.flattenedChildren.forEach((child: DerivedFEAttribute): void => {
if (child.isChildOfListOrMap && child.schema.property.isSimpleType) return; //do not display non-complex children of list or map
flatAttributes.push(this.createSimpleFlatAttribute(child, instanceName));
});
let tree = this.unflatten(flatAttributes, '', []);
return tree[0].childrens; // Return the childrens without the root.
}
public createSimpleFlatAttribute = (attribute: AttributeFEModel | DerivedFEAttribute, instanceName: string): SimpleFlatAttribute => {
if (attribute instanceof AttributeFEModel) {
return new SimpleFlatAttribute(attribute.uniqueId, attribute.name, attribute.name, '', instanceName);
} else {
let attribName: string = (attribute.isChildOfListOrMap) ? attribute.mapKey : attribute.name;
return new SimpleFlatAttribute(attribute.uniqueId, attribute.attributesName, attribName, attribute.parentName, instanceName);
}
}
/**
* Unflatten Array<SimpleFlatAttribute> and build hierarchy.
* The result will be Array<SimpleFlatAttribute> that augmantin with children for each SimpleFlatAttribute.
*/
private unflatten(array: Array<SimpleFlatAttribute>, parent: any, tree?: any): any {
tree = typeof tree !== 'undefined' ? tree : [];
parent = typeof parent !== 'undefined' && parent !== '' ? parent : {path: ''};
var children = array.filter((child: SimpleFlatAttribute): boolean => {
return child.parentName == parent.path;
});
if (children && children.length) {
if (parent.path == '') {
tree = children;
} else {
parent['children'] = children;
}
children.forEach((child): void => {
this.unflatten(array, child);
});
}
return tree;
}
}
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