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/**
* @license
* Copyright (C) 2015 The Android Open Source Project
*
* 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 '../../shared/gr-autocomplete/gr-autocomplete';
import '../../shared/gr-rest-api-interface/gr-rest-api-interface';
import '../../../styles/shared-styles';
import {dom, EventApi} from '@polymer/polymer/lib/legacy/polymer.dom';
import {GestureEventListeners} from '@polymer/polymer/lib/mixins/gesture-event-listeners';
import {LegacyElementMixin} from '@polymer/polymer/lib/legacy/legacy-element-mixin';
import {PolymerElement} from '@polymer/polymer/polymer-element';
import {htmlTemplate} from './gr-search-bar_html';
import {
KeyboardShortcutMixin,
Shortcut,
} from '../../../mixins/keyboard-shortcut-mixin/keyboard-shortcut-mixin';
import {customElement, property} from '@polymer/decorators';
import {ServerInfo} from '../../../types/common';
import {RestApiService} from '../../../services/services/gr-rest-api/gr-rest-api';
import {
AutocompleteQuery,
AutocompleteSuggestion,
GrAutocomplete,
} from '../../shared/gr-autocomplete/gr-autocomplete';
import {getDocsBaseUrl} from '../../../utils/url-util';
import {CustomKeyboardEvent} from '../../../types/events';
import {MergeabilityComputationBehavior} from '../../../constants/constants';
// Possible static search options for auto complete, without negations.
const SEARCH_OPERATORS: ReadonlyArray<string> = [
'added:',
'age:',
'age:1week', // Give an example age
'assignee:',
'author:',
'branch:',
'bug:',
'cc:',
'cc:self',
'change:',
'cherrypickof:',
'comment:',
'commentby:',
'commit:',
'committer:',
'conflicts:',
'deleted:',
'delta:',
'dir:',
'directory:',
'ext:',
'extension:',
'file:',
'footer:',
'from:',
'has:',
'has:draft',
'has:edit',
'has:star',
'has:stars',
'has:unresolved',
'hashtag:',
'intopic:',
'is:',
'is:abandoned',
'is:assigned',
'is:closed',
'is:ignored',
'is:merged',
'is:open',
'is:owner',
'is:private',
'is:reviewed',
'is:reviewer',
'is:starred',
'is:submittable',
'is:watched',
'is:wip',
'label:',
'message:',
'onlyexts:',
'onlyextensions:',
'owner:',
'ownerin:',
'parentproject:',
'project:',
'projects:',
'query:',
'ref:',
'reviewedby:',
'reviewer:',
'reviewer:self',
'reviewerin:',
'size:',
'star:',
'status:',
'status:abandoned',
'status:closed',
'status:merged',
'status:open',
'status:reviewed',
'submissionid:',
'topic:',
'tr:',
];
// All of the ops, with corresponding negations.
const SEARCH_OPERATORS_WITH_NEGATIONS_SET: ReadonlySet<string> = new Set(
SEARCH_OPERATORS.concat(SEARCH_OPERATORS.map(op => `-${op}`))
);
const MAX_AUTOCOMPLETE_RESULTS = 10;
const TOKENIZE_REGEX = /(?:[^\s"]+|"[^"]*")+\s*/g;
export type SuggestionProvider = (
predicate: string,
expression: string
) => Promise<AutocompleteSuggestion[]>;
export interface SearchBarHandleSearchDetail {
inputVal: string;
}
export interface GrSearchBar {
$: {
restAPI: RestApiService & Element;
searchInput: GrAutocomplete;
};
}
@customElement('gr-search-bar')
export class GrSearchBar extends KeyboardShortcutMixin(
GestureEventListeners(LegacyElementMixin(PolymerElement))
) {
static get template() {
return htmlTemplate;
}
private searchOperators = new Set(SEARCH_OPERATORS_WITH_NEGATIONS_SET);
/**
* Fired when a search is committed
*
* @event handle-search
*/
@property({type: String, notify: true, observer: '_valueChanged'})
value = '';
@property({type: Object})
keyEventTarget: unknown = document.body;
@property({type: Object})
query: AutocompleteQuery;
@property({type: Object})
projectSuggestions: SuggestionProvider = () => Promise.resolve([]);
@property({type: Object})
groupSuggestions: SuggestionProvider = () => Promise.resolve([]);
@property({type: Object})
accountSuggestions: SuggestionProvider = () => Promise.resolve([]);
@property({type: String})
_inputVal?: string;
@property({type: Number})
_threshold = 1;
@property({type: String})
label = '';
@property({type: String})
docBaseUrl: string | null = null;
constructor() {
super();
this.query = (input: string) => this._getSearchSuggestions(input);
}
attached() {
super.attached();
this.$.restAPI.getConfig().then((serverConfig?: ServerInfo) => {
const mergeability =
serverConfig &&
serverConfig.change &&
serverConfig.change.mergeability_computation_behavior;
if (
mergeability ===
MergeabilityComputationBehavior.API_REF_UPDATED_AND_CHANGE_REINDEX ||
mergeability ===
MergeabilityComputationBehavior.REF_UPDATED_AND_CHANGE_REINDEX
) {
// add 'is:mergeable' to searchOperators
this._addOperator('is:mergeable');
}
if (serverConfig) {
getDocsBaseUrl(serverConfig, this.$.restAPI).then(baseUrl => {
this.docBaseUrl = baseUrl;
});
}
});
}
_computeHelpDocLink(docBaseUrl: string | null) {
// fallback to gerrit's official doc
let baseUrl =
docBaseUrl || 'https://gerrit-review.googlesource.com/documentation/';
if (baseUrl.endsWith('/')) {
baseUrl = baseUrl.substring(0, baseUrl.length - 1);
}
return `${baseUrl}/user-search.html`;
}
_addOperator(name: string, include_neg = true) {
this.searchOperators.add(name);
if (include_neg) {
this.searchOperators.add(`-${name}`);
}
}
keyboardShortcuts() {
return {
[Shortcut.SEARCH]: '_handleSearch',
};
}
_valueChanged(value: string) {
this._inputVal = value;
}
_handleInputCommit(e: Event) {
this._preventDefaultAndNavigateToInputVal(e);
}
/**
* This function is called in a few different cases:
* - e.target is the search button
* - e.target is the gr-autocomplete widget (#searchInput)
* - e.target is the input element wrapped within #searchInput
*/
_preventDefaultAndNavigateToInputVal(e: Event) {
e.preventDefault();
const target = (dom(e) as EventApi).rootTarget as PolymerElement;
// If the target is the #searchInput or has a sub-input component, that
// is what holds the focus as opposed to the target from the DOM event.
if (target.$['input']) {
(target.$['input'] as HTMLElement).blur();
} else {
target.blur();
}
if (!this._inputVal) return;
const trimmedInput = this._inputVal.trim();
if (trimmedInput) {
const predefinedOpOnlyQuery = [...this.searchOperators].some(
op => op.endsWith(':') && op === trimmedInput
);
if (predefinedOpOnlyQuery) {
return;
}
const detail: SearchBarHandleSearchDetail = {
inputVal: this._inputVal,
};
this.dispatchEvent(
new CustomEvent('handle-search', {
detail,
})
);
}
}
/**
* Determine what array of possible suggestions should be provided
* to _getSearchSuggestions.
*
* @param input - The full search term, in lowercase.
* @return This returns a promise that resolves to an array of
* suggestion objects.
*/
_fetchSuggestions(input: string): Promise<AutocompleteSuggestion[]> {
// Split the input on colon to get a two part predicate/expression.
const splitInput = input.split(':');
const predicate = splitInput[0];
const expression = splitInput[1] || '';
// Switch on the predicate to determine what to autocomplete.
switch (predicate) {
case 'ownerin':
case 'reviewerin':
// Fetch groups.
return this.groupSuggestions(predicate, expression);
case 'parentproject':
case 'project':
// Fetch projects.
return this.projectSuggestions(predicate, expression);
case 'author':
case 'cc':
case 'commentby':
case 'committer':
case 'from':
case 'owner':
case 'reviewedby':
case 'reviewer':
// Fetch accounts.
return this.accountSuggestions(predicate, expression);
default:
return Promise.resolve(
[...this.searchOperators]
.filter(operator => operator.includes(input))
.map(operator => {
return {text: operator};
})
);
}
}
/**
* Get the sorted, pruned list of suggestions for the current search query.
*
* @param input - The complete search query.
* @return This returns a promise that resolves to an array of
* suggestions.
*/
_getSearchSuggestions(input: string): Promise<AutocompleteSuggestion[]> {
// Allow spaces within quoted terms.
const tokens = input.match(TOKENIZE_REGEX);
if (tokens === null) return Promise.resolve([]);
const trimmedInput = tokens[tokens.length - 1].toLowerCase();
return this._fetchSuggestions(trimmedInput).then(suggestions => {
if (!suggestions || !suggestions.length) {
return [];
}
return (
suggestions
// Prioritize results that start with the input.
.sort((a, b) => {
const aContains = a.text?.toLowerCase().indexOf(trimmedInput);
const bContains = b.text?.toLowerCase().indexOf(trimmedInput);
if (aContains === undefined && bContains === undefined) return 0;
if (aContains === undefined && bContains !== undefined) return 1;
if (aContains !== undefined && bContains === undefined) return -1;
if (aContains === bContains) {
return a.text!.localeCompare(b.text!);
}
if (aContains === -1) {
return 1;
}
if (bContains === -1) {
return -1;
}
return aContains! - bContains!;
})
// Return only the first {MAX_AUTOCOMPLETE_RESULTS} results.
.slice(0, MAX_AUTOCOMPLETE_RESULTS - 1)
// Map to an object to play nice with gr-autocomplete.
.map(({text, label}) => {
return {
name: text,
value: text,
label,
};
})
);
});
}
_handleSearch(e: CustomKeyboardEvent) {
const keyboardEvent = this.getKeyboardEvent(e);
if (
this.shouldSuppressKeyboardShortcut(e) ||
(this.modifierPressed(e) && !keyboardEvent.shiftKey)
) {
return;
}
e.preventDefault();
this.$.searchInput.focus();
this.$.searchInput.selectAll();
}
}
declare global {
interface HTMLElementTagNameMap {
'gr-search-bar': GrSearchBar;
}
}