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