blob: cfe2cfe44d6e393c3ac3645395d6a35222ef4fe8 [file] [log] [blame]
/**
* @license
* Copyright (C) 2018 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 '@polymer/iron-icon/iron-icon';
import '@polymer/iron-a11y-announcer/iron-a11y-announcer';
import '../../../styles/shared-styles';
import '../../shared/gr-button/gr-button';
import {DiffViewMode} from '../../../constants/constants';
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-diff-mode-selector_html';
import {customElement, property} from '@polymer/decorators';
import {IronA11yAnnouncer} from '@polymer/iron-a11y-announcer/iron-a11y-announcer';
import {FixIronA11yAnnouncer} from '../../../types/types';
import {appContext} from '../../../services/app-context';
@customElement('gr-diff-mode-selector')
export class GrDiffModeSelector extends GestureEventListeners(
LegacyElementMixin(PolymerElement)
) {
static get template() {
return htmlTemplate;
}
@property({type: String, notify: true})
mode?: DiffViewMode;
/**
* If set to true, the user's preference will be updated every time a
* button is tapped. Don't set to true if there is no user.
*/
@property({type: Boolean})
saveOnChange = false;
private readonly restApiService = appContext.restApiService;
attached() {
((IronA11yAnnouncer as unknown) as FixIronA11yAnnouncer).requestAvailability();
}
/**
* Set the mode. If save on change is enabled also update the preference.
*/
setMode(newMode: DiffViewMode) {
if (this.saveOnChange && this.mode && this.mode !== newMode) {
this.restApiService.savePreferences({diff_view: newMode});
}
this.mode = newMode;
let annoucement;
if (this.isUnifiedSelected(newMode)) {
annoucement = 'Changed diff view to unified';
} else if (this.isSideBySideSelected(newMode)) {
annoucement = 'Changed diff view to side by side';
}
if (annoucement) {
this.fire(
'iron-announce',
{
text: annoucement,
},
{bubbles: true}
);
}
}
_computeSideBySideSelected(mode: DiffViewMode) {
return mode === DiffViewMode.SIDE_BY_SIDE ? 'selected' : '';
}
_computeUnifiedSelected(mode: DiffViewMode) {
return mode === DiffViewMode.UNIFIED ? 'selected' : '';
}
isSideBySideSelected(mode: DiffViewMode) {
return mode === DiffViewMode.SIDE_BY_SIDE;
}
isUnifiedSelected(mode: DiffViewMode) {
return mode === DiffViewMode.UNIFIED;
}
_handleSideBySideTap() {
this.setMode(DiffViewMode.SIDE_BY_SIDE);
}
_handleUnifiedTap() {
this.setMode(DiffViewMode.UNIFIED);
}
}
declare global {
interface HTMLElementTagNameMap {
'gr-diff-mode-selector': GrDiffModeSelector;
}
}