element-web/res/css/structures/_SpacePanel.scss

/*
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.
*/

$topLevelHeight: 32px;
$nestedHeight: 24px;
$gutterSize: 16px;
$activeBorderTransparentGap: 1px;

$activeBackgroundColor: $panel-actions;
$activeBorderColor: $secondary-content;

.mx_SpacePanel {
    background-color: $groupFilterPanel-bg-color;
    flex: 0 0 auto;
    padding: 0;
    margin: 0;
    position: relative;
    // Fix for the blurred avatar-background
    z-index: 1;

    // Create another flexbox so the Panel fills the container
    display: flex;
    flex-direction: column;

    .mx_SpacePanel_spaceTreeWrapper {
        flex: 1;
        padding: 8px 8px 16px 0;
    }

    .mx_SpacePanel_toggleCollapse {
        flex: 0 0 auto;
        width: 40px;
        height: 40px;
        mask-position: center;
        mask-size: 32px;
        mask-repeat: no-repeat;
        margin-left: $gutterSize;
        margin-bottom: 12px;
        background-color: $tertiary-content;
        mask-image: url('$(res)/img/element-icons/expand-space-panel.svg');

        &.expanded {
            transform: scaleX(-1);
        }
    }

    ul {
        margin: 0;
        list-style: none;
        padding: 0;

        > .mx_SpaceItem {
            padding-left: 16px;
        }
    }

    .mx_SpaceButton_toggleCollapse {
        cursor: pointer;
    }

    .mx_SpaceItem_dragging {
        .mx_SpaceButton_toggleCollapse {
            visibility: hidden;
        }
    }

    .mx_SpaceTreeLevel {
        display: flex;
        flex-direction: column;
        max-width: 250px;
        flex-grow: 1;
    }

    .mx_SpaceItem {
        display: inline-flex;
        flex-flow: wrap;

        &.mx_SpaceItem_narrow {
            align-self: baseline;
        }
    }

    .mx_SpaceItem.collapsed {
        & > .mx_SpaceButton > .mx_SpaceButton_toggleCollapse {
            transform: rotate(-90deg);
        }

        & > .mx_SpaceTreeLevel {
            display: none;
        }
    }

    .mx_SpaceItem_new {
        position: relative;

        .mx_BetaDot {
            position: absolute;
            left: 33px;
            top: -5px;
        }
    }

    .mx_SpaceItem:not(.hasSubSpaces) > .mx_SpaceButton {
        margin-left: $gutterSize;
        min-width: 40px;
    }

    .mx_SpaceButton {
        border-radius: 8px;
        display: flex;
        align-items: center;
        padding: 4px 4px 4px 0;
        width: 100%;
        cursor: pointer;

        &.mx_SpaceButton_active {
            &:not(.mx_SpaceButton_narrow) .mx_SpaceButton_selectionWrapper {
                background-color: $activeBackgroundColor;
            }

            &.mx_SpaceButton_narrow .mx_SpaceButton_selectionWrapper {
                padding: $activeBorderTransparentGap;
                border: 3px $activeBorderColor solid;
            }
        }

        .mx_SpaceButton_selectionWrapper {
            position: relative;
            display: flex;
            flex: 1;
            align-items: center;
            border-radius: 12px;
            padding: 4px;
        }

        &:not(.mx_SpaceButton_narrow) {
            .mx_SpaceButton_selectionWrapper {
                width: 100%;
                overflow: hidden;
            }
        }

        .mx_SpaceButton_name {
            flex: 1;
            margin-left: 8px;
            white-space: nowrap;
            display: block;
            text-overflow: ellipsis;
            overflow: hidden;
            font-size: $font-14px;
            line-height: $font-18px;
        }

        .mx_SpaceButton_toggleCollapse {
            width: $gutterSize;
            height: 20px;
            mask-position: center;
            mask-size: 20px;
            mask-repeat: no-repeat;
            background-color: $tertiary-content;
            mask-image: url('$(res)/img/feather-customised/chevron-down.svg');
        }

        .mx_SpaceButton_icon {
            width: $topLevelHeight;
            min-width: $topLevelHeight;
            height: $topLevelHeight;
            border-radius: 8px;
            position: relative;

            &::before {
                position: absolute;
                content: '';
                width: $topLevelHeight;
                height: $topLevelHeight;
                top: 0;
                left: 0;
                mask-position: center;
                mask-repeat: no-repeat;
                mask-size: 18px;
            }
        }

        &.mx_SpaceButton_home .mx_SpaceButton_icon {
            background-color: #ffffff;

            &::before {
                background-color: #3f3d3d;
                mask-image: url('$(res)/img/element-icons/home.svg');
            }
        }

        &.mx_SpaceButton_new .mx_SpaceButton_icon {
            background-color: $roomlist-button-bg-color;

            &::before {
                background-color: $primary-content;
                mask-image: url('$(res)/img/element-icons/plus.svg');
                transition: all .2s ease-in-out; // TODO transition
            }
        }

        &.mx_SpaceButton_newCancel .mx_SpaceButton_icon::before {
            transform: rotate(45deg);
        }

        .mx_BaseAvatar_image {
            border-radius: 8px;
        }

        .mx_SpaceButton_menuButton {
            width: 20px;
            min-width: 20px; // yay flex
            height: 20px;
            margin-top: auto;
            margin-bottom: auto;
            display: none;
            position: relative;

            &::before {
                top: 2px;
                left: 2px;
                content: '';
                width: 16px;
                height: 16px;
                position: absolute;
                mask-position: center;
                mask-size: contain;
                mask-repeat: no-repeat;
                mask-image: url('$(res)/img/element-icons/context-menu.svg');
                background: $primary-content;
            }
        }
    }

    .mx_SpacePanel_badgeContainer {
        // Create a flexbox to make aligning dot badges easier
        display: flex;
        align-items: center;

        .mx_NotificationBadge {
            margin: 0 2px; // centering
        }

        .mx_NotificationBadge_dot {
            // make the smaller dot occupy the same width for centering
            margin: 0 7px;
        }
    }

    &.collapsed {
        .mx_SpaceButton {
            .mx_SpacePanel_badgeContainer {
                position: absolute;
                right: 0;
                top: 0;

                .mx_NotificationBadge {
                    background-clip: padding-box;
                }

                .mx_NotificationBadge_dot {
                    margin: 0 -1px 0 0;
                    border: 3px solid $groupFilterPanel-bg-color;
                }

                .mx_NotificationBadge_2char,
                .mx_NotificationBadge_3char {
                    margin: -5px -5px 0 0;
                    border: 2px solid $groupFilterPanel-bg-color;
                }
            }

            &.mx_SpaceButton_active .mx_SpacePanel_badgeContainer {
                // when we draw the selection border we move the relative bounds of our parent
                // so update our position within the bounds of the parent to maintain position overall
                right: -3px;
                top: -3px;
            }
        }
    }

    &:not(.collapsed) {
        .mx_SpaceButton:hover,
        .mx_SpaceButton:focus-within,
        .mx_SpaceButton_hasMenuOpen {
            &:not(.mx_SpaceButton_invite) {
                // Hide the badge container on hover because it'll be a menu button
                .mx_SpacePanel_badgeContainer {
                    display: none;
                }

                .mx_SpaceButton_menuButton {
                    display: block;
                }
            }
        }
    }

    /* root space buttons are bigger and not indented */
    & > .mx_AutoHideScrollbar {
        & > .mx_SpaceButton {
            height: $topLevelHeight;

            &.mx_SpaceButton_active::before {
                height: $topLevelHeight;
            }
        }

        & > ul {
            padding-left: 0;
        }
    }
}

.mx_SpacePanel_contextMenu {
    .mx_SpacePanel_contextMenu_header {
        margin: 12px 16px 12px;
        font-weight: $font-semi-bold;
        font-size: $font-15px;
        line-height: $font-18px;
    }

    .mx_IconizedContextMenu_optionList .mx_AccessibleButton.mx_SpacePanel_contextMenu_inviteButton {
        color: $accent-color;

        .mx_SpacePanel_iconInvite::before {
            background-color: $accent-color;
            mask-image: url('$(res)/img/element-icons/room/invite.svg');
        }
    }

    .mx_SpacePanel_iconSettings::before {
        mask-image: url('$(res)/img/element-icons/settings.svg');
    }

    .mx_SpacePanel_iconLeave::before {
        mask-image: url('$(res)/img/element-icons/leave.svg');
    }

    .mx_SpacePanel_iconMembers::before {
        mask-image: url('$(res)/img/element-icons/room/members.svg');
    }

    .mx_SpacePanel_iconPlus::before {
        mask-image: url('$(res)/img/element-icons/roomlist/plus-circle.svg');
    }

    .mx_SpacePanel_iconHash::before {
        mask-image: url('$(res)/img/element-icons/roomlist/hash-circle.svg');
    }

    .mx_SpacePanel_iconExplore::before {
        mask-image: url('$(res)/img/element-icons/roomlist/browse.svg');
    }

    .mx_SpacePanel_noIcon {
        display: none;

        & + .mx_IconizedContextMenu_label {
            padding-left: 5px !important; // override default iconized label style to align with header
        }
    }
}


.mx_SpacePanel_sharePublicSpace {
    margin: 0;
}