riot-web/res/css/views/elements/_Dropdown.scss

/*
Copyright 2017 OpenMarket Ltd

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.
*/

.mx_Dropdown {
    position: relative;
}

.mx_Dropdown_disabled {
    opacity: 0.3;
}

.mx_Dropdown_input {
    display: flex;
    align-items: center;
    position: relative;
    border-radius: 3px;
    border: 1px solid $strong-input-border-color;
    font-size: 12px;
    user-select: none;
}

.mx_Dropdown_input:focus {
    border-color: $accent-color;
}

/* Disable dropdown highlight on focus */
.mx_Dropdown_input.mx_AccessibleButton:focus {
    filter: none;
}

.mx_Dropdown_arrow {
    width: 10px;
    height: 6px;
    padding-right: 9px;
    mask: url('$(res)/img/feather-icons/dropdown-arrow.svg');
    mask-repeat: no-repeat;
    background: $primary-fg-color;
}

.mx_Dropdown_input > .mx_Dropdown_option {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
}

.mx_Dropdown_option {
    height: 35px;
    line-height: 35px;
    padding-left: 8px;
    padding-right: 8px;
}

.mx_Dropdown_option div {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.mx_Dropdown_option img {
    margin: 5px;
    width: 16px;
    vertical-align: middle;
}

input.mx_Dropdown_option, input.mx_Dropdown_option:focus {
    border: 0;
    padding-top: 0;
    padding-bottom: 0;
    // XXX: hack to prevent text box being too big and pushing
    // its parent out / overlapping the dropdown arrow. Only really
    // works in the Country dropdown.
    width: 60%;
}

.mx_Dropdown_menu {
    position: absolute;
    left: -1px;
    right: -1px;
    top: 100%;
    z-index: 2;
    margin: 0;
    padding: 0px;
    border-radius: 3px;
    border: 1px solid $accent-color;
    background-color: $primary-bg-color;
    max-height: 200px;
    overflow-y: auto;
}

.mx_Dropdown_menu .mx_Dropdown_option {
    height: auto;
    min-height: 35px;
}

.mx_Dropdown_menu .mx_Dropdown_option_highlight {
    background-color: $focus-bg-color;
}

.mx_Dropdown_menu {
    font-weight: bold;
}

.mx_Dropdown_searchPrompt {
    font-weight: normal;
    margin-left: 5px;
    margin-bottom: 5px;
}