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/**
* @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 '../../../elements/shared/gr-button/gr-button';
import {DiffViewMode} from '../../../constants/constants';
import {customElement, property, state} from 'lit/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';
import {browserModelToken} from '../../../models/browser/browser-model';
import {resolve} from '../../../models/dependency';
import {css, html, LitElement} from 'lit';
import {sharedStyles} from '../../../styles/shared-styles';
@customElement('gr-diff-mode-selector')
export class GrDiffModeSelector extends LitElement {
/**
* 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;
@state() private mode: DiffViewMode = DiffViewMode.SIDE_BY_SIDE;
private readonly getBrowserModel = resolve(this, browserModelToken);
private readonly userModel = getAppContext().userModel;
private subscriptions: Subscription[] = [];
constructor() {
super();
}
override connectedCallback() {
super.connectedCallback();
(
IronA11yAnnouncer as unknown as FixIronA11yAnnouncer
).requestAvailability();
this.subscriptions.push(
this.getBrowserModel().diffViewMode$.subscribe(
diffView => (this.mode = diffView)
)
);
}
override disconnectedCallback() {
for (const s of this.subscriptions) {
s.unsubscribe();
}
this.subscriptions = [];
super.disconnectedCallback();
}
static override styles = [
sharedStyles,
css`
:host {
/* Used to remove horizontal whitespace between the icons. */
display: flex;
}
gr-button.selected iron-icon {
color: var(--link-color);
}
iron-icon {
height: 1.3rem;
width: 1.3rem;
}
`,
];
override render() {
return html`
<gr-tooltip-content
has-tooltip
title="Side-by-side diff"
?position-below=${this.showTooltipBelow}
>
<gr-button
id="sideBySideBtn"
link
class=${this.computeSideBySideSelected()}
aria-pressed=${this.isSideBySideSelected()}
@click=${this.handleSideBySideTap}
>
<iron-icon icon="gr-icons:side-by-side"></iron-icon>
</gr-button>
</gr-tooltip-content>
<gr-tooltip-content
has-tooltip
?position-below=${this.showTooltipBelow}
title="Unified diff"
>
<gr-button
id="unifiedBtn"
link
class=${this.computeUnifiedSelected()}
aria-pressed=${this.isUnifiedSelected()}
@click=${this.handleUnifiedTap}
>
<iron-icon icon="gr-icons:unified"></iron-icon>
</gr-button>
</gr-tooltip-content>
`;
}
/**
* Set the mode. If save on change is enabled also update the preference.
*/
private 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()) {
announcement = 'Changed diff view to unified';
} else if (this.isSideBySideSelected()) {
announcement = 'Changed diff view to side by side';
}
if (announcement) {
fireIronAnnounce(this, announcement);
}
}
private computeSideBySideSelected() {
return this.mode === DiffViewMode.SIDE_BY_SIDE ? 'selected' : '';
}
private computeUnifiedSelected() {
return this.mode === DiffViewMode.UNIFIED ? 'selected' : '';
}
private isSideBySideSelected() {
return this.mode === DiffViewMode.SIDE_BY_SIDE;
}
private isUnifiedSelected() {
return this.mode === DiffViewMode.UNIFIED;
}
private handleSideBySideTap() {
this.setMode(DiffViewMode.SIDE_BY_SIDE);
}
private handleUnifiedTap() {
this.setMode(DiffViewMode.UNIFIED);
}
}
declare global {
interface HTMLElementTagNameMap {
'gr-diff-mode-selector': GrDiffModeSelector;
}
}
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