element-web/src/components/views/rooms/PinnedEventTile.tsx

/*
Copyright 2017 Travis Ralston
Copyright 2021 The Matrix.org Foundation C.I.C.

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 React from "react";
import { Room } from "matrix-js-sdk/src/models/room";
import { MatrixEvent } from "matrix-js-sdk/src/models/event";

import {MatrixClientPeg} from "../../../MatrixClientPeg";
import dis from "../../../dispatcher/dispatcher";
import AccessibleButton from "../elements/AccessibleButton";
import MessageEvent from "../messages/MessageEvent";
import MemberAvatar from "../avatars/MemberAvatar";
import { _t } from '../../../languageHandler';
import {formatFullDate} from '../../../DateUtils';
import {replaceableComponent} from "../../../utils/replaceableComponent";

interface IProps {
    mxRoom: Room;
    mxEvent: MatrixEvent;
    onUnpinned?(): void;
}

@replaceableComponent("views.rooms.PinnedEventTile")
export default class PinnedEventTile extends React.Component<IProps> {
    private onTileClicked = () => {
        dis.dispatch({
            action: 'view_room',
            event_id: this.props.mxEvent.getId(),
            highlighted: true,
            room_id: this.props.mxEvent.getRoomId(),
        });
    };

    private onUnpinClicked = () => {
        const pinnedEvents = this.props.mxRoom.currentState.getStateEvents("m.room.pinned_events", "");
        if (!pinnedEvents || !pinnedEvents.getContent().pinned) {
            // Nothing to do: already unpinned
            if (this.props.onUnpinned) this.props.onUnpinned();
        } else {
            const pinned = pinnedEvents.getContent().pinned;
            const index = pinned.indexOf(this.props.mxEvent.getId());
            if (index !== -1) {
                pinned.splice(index, 1);
                MatrixClientPeg.get().sendStateEvent(this.props.mxRoom.roomId, 'm.room.pinned_events', {pinned}, '')
                    .then(() => {
                        if (this.props.onUnpinned) this.props.onUnpinned();
                    });
            } else if (this.props.onUnpinned) this.props.onUnpinned();
        }
    };

    private canUnpin() {
        return this.props.mxRoom.currentState.mayClientSendStateEvent('m.room.pinned_events', MatrixClientPeg.get());
    }

    render() {
        const sender = this.props.mxEvent.getSender();
        // Get the latest sender profile rather than historical
        const senderProfile = this.props.mxRoom.getMember(sender);
        const avatarSize = 40;

        let unpinButton = null;
        if (this.canUnpin()) {
            unpinButton = (
                <AccessibleButton onClick={this.onUnpinClicked} className="mx_PinnedEventTile_unpinButton">
                    <img
                        src={require("../../../../res/img/cancel-red.svg")}
                        width="8"
                        height="8"
                        alt={_t('Unpin Message')}
                        title={_t('Unpin Message')}
                    />
                </AccessibleButton>
            );
        }

        return (
            <div className="mx_PinnedEventTile">
                <div className="mx_PinnedEventTile_actions">
                    <AccessibleButton
                        className="mx_PinnedEventTile_gotoButton mx_textButton"
                        onClick={this.onTileClicked}
                    >
                        { _t("Jump to message") }
                    </AccessibleButton>
                    { unpinButton }
                </div>

                <span className="mx_PinnedEventTile_senderAvatar">
                    <MemberAvatar
                        member={senderProfile}
                        width={avatarSize}
                        height={avatarSize}
                        fallbackUserId={sender}
                    />
                </span>
                <span className="mx_PinnedEventTile_sender">
                    { senderProfile ? senderProfile.name : sender }
                </span>
                <span className="mx_PinnedEventTile_timestamp">
                    { formatFullDate(new Date(this.props.mxEvent.getTs())) }
                </span>
                <div className="mx_PinnedEventTile_message">
                    <MessageEvent
                        mxEvent={this.props.mxEvent}
                        className="mx_PinnedEventTile_body"
                        maxImageHeight={150}
                        onHeightChanged={() => {}} // we need to give this, apparently
                    />
                </div>
            </div>
        );
    }
}