material-design-lite/src/textfield/_textfield.scss

/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * 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 "../variables";
@import "../mixins";

// The container for the whole component.
.mdl-textfield {
  position: relative;
  font-size: $input-text-font-size;
  display: inline-block;
  box-sizing: border-box;
  width: 300px;
  max-width: 100%;
  margin: 0;
  padding: $input-text-vertical-spacing 0;

  // Align buttons, if used.
  & .mdl-button {
    position: absolute;
    bottom: $input-text-vertical-spacing;
  }
}

// Optional class to align right.
.mdl-textfield--align-right {
  text-align: right;
}

// Optional class to display at full width.
.mdl-textfield--full-width {
  width: 100%;
}

// Optional class to make the text field expandable.
.mdl-textfield--expandable {
  min-width: $input-text-button-size;
  width: auto;
  min-height: $input-text-button-size;
}

// Styling for the input element.
.mdl-textfield__input {
  border: none;
  border-bottom: 1px solid $input-text-bottom-border-color;
  display: block;
  font-size: $input-text-font-size;
  font-family: $performance_font;
  margin: 0;
  padding: $input-text-padding 0;
  width: $input-text-width;
  background: none;
  text-align: left;
  color: inherit;

  &[type="number"] {
    -moz-appearance: textfield;
  }

  &[type="number"]::-webkit-inner-spin-button,
  &[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
  }

  .mdl-textfield.is-focused & {
    outline: none;
  }

  .mdl-textfield.is-invalid & {
    border-color: $input-text-error-color;
    box-shadow: none;
  }

  fieldset[disabled] .mdl-textfield &,
  .mdl-textfield.is-disabled & {
    background-color: transparent;
    border-bottom: 1px dotted $input-text-disabled-color;
    color: $input-text-disabled-text-color;
  }
}

.mdl-textfield textarea.mdl-textfield__input {
  display: block;
}

// Styling for the label / floating label.
.mdl-textfield__label {
  bottom: 0;
  color: $input-text-label-color;
  font-size: $input-text-font-size;
  left: 0;
  right: 0;
  pointer-events: none;
  position: absolute;
  display: block;
  top: ($input-text-padding + $input-text-vertical-spacing);
  width: 100%;
  overflow: hidden;
  white-space: nowrap;
  text-align: left;

  .mdl-textfield.is-dirty & {
    visibility: hidden;
  }

  // Floating Label
  .mdl-textfield--floating-label & {
    @include material-animation-default();
  }

  fieldset[disabled] .mdl-textfield &,
  .mdl-textfield.is-disabled.is-disabled & {
    color: $input-text-disabled-text-color;
  }

  .mdl-textfield--floating-label.is-focused &,
  .mdl-textfield--floating-label.is-dirty & {
    color: $input-text-highlight-color;
    font-size : $input-text-floating-label-fontsize;
    top: $input-text-vertical-spacing - ($input-text-floating-label-fontsize + $input-text-padding);
    visibility: visible;
  }

  .mdl-textfield--floating-label.is-focused .mdl-textfield__expandable-holder &,
  .mdl-textfield--floating-label.is-dirty .mdl-textfield__expandable-holder &{
    top: -($input-text-floating-label-fontsize + $input-text-padding);
  }

  .mdl-textfield--floating-label.is-invalid & {
    color: $input-text-error-color;
    font-size: $input-text-floating-label-fontsize;
  }

  // The after label is the colored underline for the TextField.
  &:after {
    background-color: $input-text-highlight-color;
    bottom: $input-text-vertical-spacing;
    content: '';
    height: 2px;
    left: 45%;
    position: absolute;
    @include material-animation-default();
    visibility: hidden;
    width: 10px;
  }

  .mdl-textfield.is-focused &:after {
    left: 0;
    visibility: visible;
    width: 100%;
  }

  .mdl-textfield.is-invalid &:after {
    background-color: $input-text-error-color;
  }
}

// TextField Error.
.mdl-textfield__error {
  color: $input-text-error-color;
  position: absolute;
  font-size: $input-text-floating-label-fontsize;
  margin-top: 3px;
  visibility: hidden;
  display: block;

  .mdl-textfield.is-invalid & {
    visibility: visible;
  }
}

// Expandable Holder.
.mdl-textfield__expandable-holder {
  display: inline-block;
  position: relative;
  margin-left: $input-text-button-size;

  @include material-animation-default();
  display: inline-block;

  // Safari (possibly others) need to be convinced that this field is actually
  // visible, otherwise it cannot be tabbed to nor focused via a <label>.
  // TODO: In some cases (Retina displays), this is big enough to render the
  // inner element :(
  max-width: 0.1px;

  .mdl-textfield.is-focused &, .mdl-textfield.is-dirty & {
    // This is an unfortunate hack. Animating between widths in percent (%)
    // in many browsers (Chrome, Firefox) only animates the inner visual style
    // of the input - the outer bounding box still 'jumps'.
    // Thus assume a sensible maximum, and animate to/from that value.
    max-width: 600px;
  }
  .mdl-textfield__label:after {
    bottom: 0;
  }
}