Angular-Docs-Cn/modules/angular2_material/src/components/input/input.scss

@import "../../core/style/variables";

// TODO(jelbourn): This goes away.
@import "../../core/style/default-theme";

@mixin input-placeholder-color($color) {
  &::-webkit-input-placeholder,
  &::-moz-placeholder, /* Firefox 19+ */
  &:-moz-placeholder, /* Firefox 18- */
  &:-ms-input-placeholder {
    color: $color;
  }
}

$input-container-padding: 2px !default;

$input-label-default-offset: 24px !default;
$input-label-default-scale: 1.0 !default;
$input-label-float-offset: 4px !default;
$input-label-float-scale: 0.75 !default;

$input-placeholder-offset: $input-label-default-offset !default;

$input-border-width-default: 1px !default;
$input-border-width-focused: 2px !default;
$input-line-height: 26px !default;
$input-padding-top: 2px !default;

$input-error-font-size: 12px !default;
$input-error-height: 24px !default;

md-input-container {
  box-sizing: border-box;
  display: flex;
  position: relative;
  flex-direction: column;

  overflow-x: hidden;
  padding: $input-container-padding;
  padding-bottom: $input-container-padding + $input-error-height;

  > md-icon {
    position: absolute;
    top: 5px;
    left: 2px;
    + input {
      margin-left: 28px * 2;
    }
  }

  textarea,
  input[type="text"],
  input[type="password"],
  input[type="datetime"],
  input[type="datetime-local"],
  input[type="date"],
  input[type="month"],
  input[type="time"],
  input[type="week"],
  input[type="number"],
  input[type="email"],
  input[type="url"],
  input[type="search"],
  input[type="tel"],
  input[type="color"] {
    // Remove default appearance from all input / textarea.
    // `appearance` is not supported in IE, but does IE apply any txt input styling?
    -moz-appearance: none;
    -webkit-appearance: none;
    appearance: none;
  }

  textarea {
    resize: none;
    overflow: hidden;
  }

  textarea.md-input {
    min-height: 2 * $input-line-height + $input-border-width-focused + $input-padding-top;
    -ms-flex-preferred-size: auto; // IE10
  }

  label:not(.md-no-float),
  .md-placeholder:not(.md-select-label) {
    order: 1;
    pointer-events: none;
    -webkit-font-smoothing: antialiased;
    padding-left: $input-container-padding;
    z-index: 1;
    transform: translate3d(0, $input-label-default-offset, 0) scale($input-label-default-scale);
    transform-origin: left top;
    transition: transform $swift-ease-out-timing-function 0.25s;
  }

  .md-placeholder:not(.md-select-label) {
    position: absolute;
    top: 0;
    opacity: 0;
    transition-property: opacity, transform;
    transform: translate3d(0, $input-placeholder-offset + $baseline-grid * 0.75, 0);
  }
  &.md-input-focused .md-placeholder {
    opacity: 1;
    transform: translate3d(0, $input-placeholder-offset, 0);
  }
  // Placeholder should immediately disappear when the user starts typing
  &.md-input-has-value .md-placeholder {
    transition: none;
    opacity: 0;
  }

  &:not( .md-input-has-value ) input:not( :focus ) {
    color: transparent;
  }


  /*
   * The .md-input class is added to the input/textarea
   */
  .md-input {
    flex: 1 1 auto;
    order: 2;
    display: block;

    background: none;
    padding: $input-padding-top 2px $input-border-width-focused - $input-border-width-default;
    border-width: 0 0 $input-border-width-default 0;
    line-height: $input-line-height;
    -ms-flex-preferred-size: $input-line-height; // IE10
    border-radius: 0;

    &:focus {
      outline: none;
    }
    &:invalid {
      outline: none;
      box-shadow: none;
    }
  }

  .md-char-counter {
    -webkit-font-smoothing: antialiased;
    position: absolute;
    font-size: $input-error-font-size;
    line-height: $input-error-height;
    bottom: $input-container-padding;
    right: $input-container-padding;

    // TODO(jelbourn): animations here.
  }

  &.md-input-focused,
  &.md-input-has-value {
    label:not(.md-no-float) {
      transform: translate3d(0,$input-label-float-offset,0) scale($input-label-float-scale);
    }
  }

  // Use wide border in error state or in focused state
  &.md-input-focused .md-input {
    padding-bottom: 0; // Increase border width by 1px, decrease padding by 1
    border-width: 0 0 $input-border-width-focused 0;
  }

  .md-input {
    &[disabled],
    [disabled] & {
      background-position: 0 bottom;
      // This background-size is coordinated with a linear-gradient set in input-theme.scss
      // to create a dotted line under the input.
      background-size: 3px 1px;
      background-repeat: repeat-x;
    }
  }
}


// THEME

md-input-container {
  .md-input {
    @include input-placeholder-color(md-color($md-foreground, hint-text));
    color: md-color($md-foreground, text);
    border-color: md-color($md-foreground, divider);
    // text-shadow: md-color($md-foreground, shadow); // what is this?
  }

  > md-icon {
    color: md-color($md-foreground, text);
  }

  label,
  .md-placeholder {
    // text-shadow: md-color($md-foreground, shadow); // what is this?
    color: md-color($md-foreground, hint-text);
  }

  div[ng-messages] {
    color: md-color($md-warn, 500)
  }


  &:not(.md-input-invalid) {
    &.md-input-has-value {
      label {
        color: md-color($md-foreground, secondary-text);
      }
    }
    &.md-input-focused {
      .md-input {
        border-color: md-color($md-primary, 500);
      }
      label {
        color: md-color($md-primary, 500);
      }
      md-icon {
        color: md-color($md-primary, 500);
      }
      &.md-accent {
        .md-input {
          border-color: md-color($md-accent, 500);
        }
        label {
          color: md-color($md-accent, 500);
        }
      }
      &.md-warn {
        .md-input {
          border-color: md-color($md-warn, 500);
        }
        label {
          color: md-color($md-warn, 500);
        }
      }
    }
  }
  &.md-input-invalid {
    .md-input {
      border-color: md-color($md-warn, 500);
    }
    label {
      color: md-color($md-warn, 500);
    }
    .md-char-counter {
      color: md-color($md-warn, 500);
    }
  }
  .md-input {
    &[disabled],
    [disabled] & {
      border-bottom-color: transparent;
      color: md-color($md-foreground, disabled-text);
      background-image: linear-gradient(to right, md-color($md-foreground, divider) 0%, md-color($md-foreground, divider) 33%, transparent 0%);
      background-image: -ms-linear-gradient(left, transparent 0%, md-color($md-foreground, divider) 100%);
    }
  }
}