element-web-Github/res/css/views/right_panel/_ThreadPanel.pcss

/*
Copyright 2024 New Vector Ltd.
Copyright 2021-2024 The Matrix.org Foundation C.I.C.

SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only
Please see LICENSE files in the repository root for full details.
*/

.mx_ThreadPanel {
    height: 100px;
    overflow: visible;

    /* Unset flex on the thread list, but not the thread view */
    &:not(.mx_ThreadView) .mx_BaseCard_header .mx_BaseCard_header_title {
        flex: unset;
    }

    .mx_BaseCard_header {
        .mx_BaseCard_header_title {
            .mx_AccessibleButton {
                font-size: 12px;
                color: $secondary-content;
            }

            .mx_ThreadPanel_vertical_separator {
                height: 16px;
                margin-left: var(--cpd-space-3x);
                margin-right: var(--cpd-space-1x);
                border-left: 1px solid var(--cpd-color-gray-400);
            }

            .mx_ThreadPanel_dropdown {
                padding: 3px $spacing-4 3px $spacing-8;
                border-radius: 4px;
                line-height: 1.5;
                user-select: none;

                &:hover,
                &[aria-expanded="true"] {
                    background: $quinary-content;
                }

                &::before {
                    content: "";
                    width: 18px;
                    height: 18px;
                    background: currentColor;
                    mask-image: url("@vector-im/compound-design-tokens/icons/chevron-down.svg");
                    mask-size: 100%;
                    mask-repeat: no-repeat;
                    float: right;
                }
            }
        }
    }

    .mx_AutoHideScrollbar,
    .mx_RoomView_messagePanelSpinner {
        background-color: $background;
        border-radius: 8px;
        padding-inline-end: 0;
        overflow-y: scroll; /* set gap between the thread tile and the right border */
        height: 100%;
    }

    .mx_EventTile[data-layout="group"] {
        .mx_MessageActionBar {
            right: 0;
            top: -36px; /* 2px above EventTile */
            z-index: 10; /* See _EventTile.pcss */
        }
    }

    /* For style rules of EventTile in a thread, see _EventTile.pcss */
    &.mx_ThreadView {
        max-height: 100%;

        .mx_ThreadView_timelinePanelWrapper {
            position: relative;
            min-height: 0; /* don't displace the composer */
            flex-grow: 1;

            .mx_FileDropTarget {
                border-radius: 8px;
            }
        }

        .mx_MessageComposer_sendMessage {
            margin-right: 0;
        }

        // Make use of the space above the composer buttons too
        .mx_Autocomplete {
            width: calc(100% + 140px);
        }
        &.mx_ThreadView_narrow .mx_Autocomplete {
            width: calc(100% + 108px);
        }
    }

    .mx_RoomView_messagePanel {
        &.mx_RoomView_messageListWrapper {
            position: initial;
        }

        .mx_RoomView_messageListWrapper {
            width: calc(100% + 6px); /* 8px - 2px */
        }

        .mx_RoomView_empty {
            display: contents;
        }
    }

    .mx_RoomView_MessageList {
        padding-inline-start: $spacing-8;
        padding-inline-end: $spacing-8;
        content-visibility: visible;
    }

    .mx_EventTile,
    .mx_GenericEventListSummary {
        /* Account for scrollbar when hovering */
        padding-top: 0;

        .mx_TimelineSeparator {
            display: none;
        }

        &.mx_EventTile_clamp:hover {
            cursor: pointer;
        }
    }

    .mx_MessageComposer {
        background-color: $background;
        border-radius: 8px;
        margin-top: 8px;
        padding: 0 8px;
        box-sizing: border-box;
    }

    .mx_MessageTimestamp {
        color: $secondary-content;
    }

    .mx_BaseCard_footer {
        text-align: left;
        font-size: $font-12px;
        align-items: center;
        justify-content: flex-end;
        gap: 4px;
        position: relative;
        top: 2px;
        padding-right: 8px;

        .mx_AccessibleButton_kind_link_inline {
            color: $secondary-content;
        }
    }
}

.mx_ThreadPanel_viewInRoom::before {
    mask-image: url("$(res)/img/element-icons/view-in-room.svg");
}

.mx_ThreadPanel_copyLinkToThread::before {
    mask-image: url("$(res)/img/element-icons/link.svg");
}

.mx_ContextualMenu_wrapper {
    .mx_ThreadPanel_Header_FilterOptionItem {
        display: flex;
        flex-grow: 1;
        justify-content: space-between;
        flex-direction: column;
        padding: 10px 20px 10px 30px;
        position: relative;

        &:hover {
            background-color: $event-selected-color;
        }

        &[aria-checked="true"] {
            :first-child {
                margin-left: -20px;
            }

            :first-child::before {
                content: "";
                width: 12px;
                height: 12px;
                margin-right: 8px;
                mask-image: url("@vector-im/compound-design-tokens/icons/check.svg");
                mask-size: 100%;
                mask-repeat: no-repeat;
                background-color: $primary-content;
                display: inline-block;
                vertical-align: middle;
            }
        }

        :last-child {
            color: $secondary-content;
        }
    }
}