blob: fd30c6a98a8c1979e6add96a7e9901ae5759e355 [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 {Subscription} from 'rxjs';
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 {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 {getAppContext} from '../../../services/app-context';
import {fireIronAnnounce} from '../../../utils/event-util';
@customElement('gr-diff-mode-selector')
export class GrDiffModeSelector extends PolymerElement {
static get template() {
return htmlTemplate;
}
@property({type: String, notify: true})
mode: DiffViewMode = DiffViewMode.SIDE_BY_SIDE;
/**
* 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;
@property({type: Boolean})
showTooltipBelow = false;
// Private but accessed by tests.
readonly browserModel = getAppContext().browserModel;
private readonly userModel = getAppContext().userModel;
private subscriptions: Subscription[] = [];
constructor() {
super();
}
override connectedCallback() {
super.connectedCallback();
(
IronA11yAnnouncer as unknown as FixIronA11yAnnouncer
).requestAvailability();
this.subscriptions.push(
this.browserModel.diffViewMode$.subscribe(
diffView => (this.mode = diffView)
)
);
}
override disconnectedCallback() {
for (const s of this.subscriptions) {
s.unsubscribe();
}
this.subscriptions = [];
super.disconnectedCallback();
}
/**
* 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.userModel.updatePreferences({diff_view: newMode});
}
this.mode = newMode;
let announcement;
if (this.isUnifiedSelected(newMode)) {
announcement = 'Changed diff view to unified';
} else if (this.isSideBySideSelected(newMode)) {
announcement = 'Changed diff view to side by side';
}
if (announcement) {
fireIronAnnounce(this, announcement);
}
}
_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;
}
}