| // Core styles that enable monitoring autofill state of text fields. |
| @mixin cdk-text-field { |
| // Keyframes that apply no styles, but allow us to monitor when an text field becomes autofilled |
| // by watching for the animation events that are fired when they start. Note: the /*!*/ comment is |
| // needed to prevent LibSass from stripping the keyframes out. |
| // Based on: https://medium.com/@brunn/detecting-autofilled-fields-in-javascript-aed598d25da7 |
| @keyframes cdk-text-field-autofill-start {/*!*/} |
| @keyframes cdk-text-field-autofill-end {/*!*/} |
| |
| .cdk-text-field-autofill-monitored:-webkit-autofill { |
| // Since Chrome 80 we need a 1ms delay, or the animationstart event won't fire. |
| animation: cdk-text-field-autofill-start 0s 1ms; |
| } |
| |
| .cdk-text-field-autofill-monitored:not(:-webkit-autofill) { |
| // Since Chrome 80 we need a 1ms delay, or the animationstart event won't fire. |
| animation: cdk-text-field-autofill-end 0s 1ms; |
| } |
| |
| // Remove the resize handle on autosizing textareas, because whatever height |
| // the user resized to will be overwritten once they start typing again. |
| textarea.cdk-textarea-autosize { |
| resize: none; |
| } |
| |
| // This class is temporarily applied to the textarea when it is being measured. It is immediately |
| // removed when measuring is complete. We use `!important` rules here to make sure user-specified |
| // rules do not interfere with the measurement. |
| textarea.cdk-textarea-autosize-measuring { |
| @include _cdk-textarea-autosize-measuring-base; |
| height: auto !important; |
| overflow: hidden !important; |
| } |
| |
| // Similar to the `cdk-textarea-autosize-measuring` class, but only applied on Firefox. We need |
| // to use this class, because Firefox has a bug where changing the `overflow` breaks the user's |
| // ability to undo/redo what they were typing (see #16629). This class is only scoped to Firefox, |
| // because the measurements there don't seem to be affected by the `height: 0`, whereas on other |
| // browsers they are, e.g. Chrome detects longer text and IE does't resize back to normal. |
| // Identical issue report: https://bugzilla.mozilla.org/show_bug.cgi?id=448784 |
| textarea.cdk-textarea-autosize-measuring-firefox { |
| @include _cdk-textarea-autosize-measuring-base; |
| height: 0 !important; |
| } |
| } |
| |
| @mixin _cdk-textarea-autosize-measuring-base { |
| // Having 2px top and bottom padding seems to fix a bug where Chrome gets an incorrect |
| // measurement. We just have to account for it later and subtract it off the final result. |
| padding: 2px 0 !important; |
| box-sizing: content-box !important; |
| } |
| |
| // Used to generate UIDs for keyframes used to change the text field autofill styles. |
| $cdk-text-field-autofill-color-frame-count: 0; |
| |
| // Mixin used to apply custom background and foreground colors to an autofilled text field. |
| // Based on: https://stackoverflow.com/questions/2781549/ |
| // removing-input-background-colour-for-chrome-autocomplete#answer-37432260 |
| @mixin cdk-text-field-autofill-color($background, $foreground:'') { |
| @keyframes cdk-text-field-autofill-color-#{$cdk-text-field-autofill-color-frame-count} { |
| to { |
| background: $background; |
| @if $foreground != '' { color: $foreground; } |
| } |
| } |
| |
| &:-webkit-autofill { |
| animation: cdk-text-field-autofill-color-#{$cdk-text-field-autofill-color-frame-count} both; |
| } |
| |
| &.cdk-text-field-autofill-monitored:-webkit-autofill { |
| // Since Chrome 80 we need a 1ms delay for cdk-text-field-autofill-start, or the animationstart |
| // event won't fire. |
| animation: cdk-text-field-autofill-start 0s 1ms, |
| cdk-text-field-autofill-color-#{$cdk-text-field-autofill-color-frame-count} both; |
| } |
| |
| $cdk-text-field-autofill-color-frame-count: |
| $cdk-text-field-autofill-color-frame-count + 1 !global; |
| } |