ng-jhipster
Version:
A Jhipster util library for Angular
87 lines (83 loc) • 13.5 kB
JavaScript
/*
Copyright 2013-2020 the original author or authors from the JHipster project.
This file is part of the JHipster project, see https://www.jhipster.tech/
for more information.
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.
*/
import { Pipe } from '@angular/core';
export class JhiFilterPipe {
transform(input, filter, field) {
if (typeof filter === 'undefined' || filter === '') {
return input;
}
// if filter is of type 'function' compute current value of filter, otherwise return filter
const currentFilter = typeof filter === 'function' ? filter() : filter;
if (typeof currentFilter === 'number') {
return input.filter(this.filterByNumber(currentFilter, field));
}
if (typeof currentFilter === 'boolean') {
return input.filter(this.filterByBoolean(currentFilter, field));
}
if (typeof currentFilter === 'string') {
return input.filter(this.filterByString(currentFilter, field));
}
if (typeof currentFilter === 'object') {
// filter by object ignores 'field' if specified
return input.filter(this.filterByObject(currentFilter));
}
// 'symbol' && 'undefined'
return input.filter(this.filterDefault(currentFilter, field));
}
filterByNumber(filter, field) {
return value => (value && !filter) || (typeof value === 'object' && field)
? value[field] && typeof value[field] === 'number' && value[field] === filter
: typeof value === 'number' && value === filter;
}
filterByBoolean(filter, field) {
return value => typeof value === 'object' && field
? value[field] && typeof value[field] === 'boolean' && value[field] === filter
: typeof value === 'boolean' && value === filter;
}
filterByString(filter, field) {
return value => (value && !filter) || (typeof value === 'object' && field)
? value[field] && typeof value[field] === 'string' && value[field].toLowerCase().includes(filter.toLowerCase())
: typeof value === 'string' && value.toLowerCase().includes(filter.toLowerCase());
}
filterDefault(filter, field) {
return value => ((value && !filter) || (typeof value === 'object' && field) ? value[field] && filter === value : filter === value);
}
filterByObject(filter) {
return value => {
const keys = Object.keys(filter);
let isMatching = false;
// all fields defined in filter object must match
for (const key of keys) {
if (typeof filter[key] === 'number') {
isMatching = this.filterByNumber(filter[key])(value[key]);
}
else if (typeof filter[key] === 'boolean') {
isMatching = this.filterByBoolean(filter[key])(value[key]);
}
else if (typeof filter[key] === 'string') {
isMatching = this.filterByString(filter[key])(value[key]);
}
else {
isMatching = this.filterDefault(filter[key])(value[key]);
}
}
return isMatching;
};
}
}
JhiFilterPipe.decorators = [
{ type: Pipe, args: [{ name: 'filter', pure: false },] }
];
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filter() : filter;\n\n        if (typeof currentFilter === 'number') {\n            return input.filter(this.filterByNumber(currentFilter, field));\n        }\n        if (typeof currentFilter === 'boolean') {\n            return input.filter(this.filterByBoolean(currentFilter, field));\n        }\n        if (typeof currentFilter === 'string') {\n            return input.filter(this.filterByString(currentFilter, field));\n        }\n        if (typeof currentFilter === 'object') {\n            // filter by object ignores 'field' if specified\n            return input.filter(this.filterByObject(currentFilter));\n        }\n\n        // 'symbol' && 'undefined'\n        return input.filter(this.filterDefault(currentFilter, field));\n    }\n\n    private filterByNumber(filter, field?) {\n        return value =>\n            (value && !filter) || (typeof value === 'object' && field)\n                ? value[field] && typeof value[field] === 'number' && value[field] === filter\n                : typeof value === 'number' && value === filter;\n    }\n\n    private filterByBoolean(filter, field?) {\n        return value =>\n            typeof value === 'object' && field\n                ? value[field] && typeof value[field] === 'boolean' && value[field] === filter\n                : typeof value === 'boolean' && value === filter;\n    }\n\n    private filterByString(filter, field?) {\n        return value =>\n            (value && !filter) || (typeof value === 'object' && field)\n                ? value[field] && typeof value[field] === 'string' && value[field].toLowerCase().includes(filter.toLowerCase())\n                : typeof value === 'string' && value.toLowerCase().includes(filter.toLowerCase());\n    }\n\n    private filterDefault(filter, field?) {\n        return value => ((value && !filter) || (typeof value === 'object' && field) ? value[field] && filter === value : filter === value);\n    }\n\n    private filterByObject(filter) {\n        return value => {\n            const keys = Object.keys(filter);\n            let isMatching = false;\n\n            // all fields defined in filter object must match\n            for (const key of keys) {\n                if (typeof filter[key] === 'number') {\n                    isMatching = this.filterByNumber(filter[key])(value[key]);\n                } else if (typeof filter[key] === 'boolean') {\n                    isMatching = this.filterByBoolean(filter[key])(value[key]);\n                } else if (typeof filter[key] === 'string') {\n                    isMatching = this.filterByString(filter[key])(value[key]);\n                } else {\n                    isMatching = this.filterDefault(filter[key])(value[key]);\n                }\n            }\n            return isMatching;\n        };\n    }\n}\n"]}