refactor(checkbox): use the new tokens (#29564)

Issue number: internal

---------

<!-- Please do not submit updates to dependencies unless it fixes an
issue. -->

<!-- Please try to limit your pull request to one type (bugfix, feature,
etc). Submit multiple pull requests if needed. -->

## What is the new behavior?
<!-- Please describe the behavior or changes that are being added by
this PR. -->

- updated ionic.checkbox.scss with ionic tokens and removed references
to checkbox.scss partial
- removed ionic.checkbox.vars.scss file
- update snapshots resulted from slight differences due to the use of
the updated tokens.
- added theme-ionic html file to test basic use-cases with ionic theme.
- border-radius now won't auto scale with `--size`. This was not
possible to do using the gloabls tokens variables and the css calc(), as
it was before. Besides, this is not something we are very interested to
offer on Ionic theme. It should be on developer to also update the
`--border-radius` variable if they want, after changing `--size`.

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

<!--
  If this introduces a breaking change:
1. Describe the impact and migration path for existing applications
below.
  2. Update the BREAKING.md file with the breaking change.
3. Add "BREAKING CHANGE: [...]" to the commit description when merging.
See
https://github.com/ionic-team/ionic-framework/blob/main/docs/CONTRIBUTING.md#footer
for more information.
-->

---------

Co-authored-by: Maria Hutt <thetaPC@users.noreply.github.com>

core/api.txt

@@ -516,37 +516,26 @@ ion-checkbox,prop,value,any,'on',false,false
 ion-checkbox,event,ionBlur,void,true
 ion-checkbox,event,ionChange,CheckboxChangeEventDetail<any>,true
 ion-checkbox,event,ionFocus,void,true
-ion-checkbox,css-prop,--border-color,ionic
 ion-checkbox,css-prop,--border-color,ios
 ion-checkbox,css-prop,--border-color,md
-ion-checkbox,css-prop,--border-color-checked,ionic
 ion-checkbox,css-prop,--border-color-checked,ios
 ion-checkbox,css-prop,--border-color-checked,md
-ion-checkbox,css-prop,--border-radius,ionic
 ion-checkbox,css-prop,--border-radius,ios
 ion-checkbox,css-prop,--border-radius,md
-ion-checkbox,css-prop,--border-style,ionic
 ion-checkbox,css-prop,--border-style,ios
 ion-checkbox,css-prop,--border-style,md
-ion-checkbox,css-prop,--border-width,ionic
 ion-checkbox,css-prop,--border-width,ios
 ion-checkbox,css-prop,--border-width,md
-ion-checkbox,css-prop,--checkbox-background,ionic
 ion-checkbox,css-prop,--checkbox-background,ios
 ion-checkbox,css-prop,--checkbox-background,md
-ion-checkbox,css-prop,--checkbox-background-checked,ionic
 ion-checkbox,css-prop,--checkbox-background-checked,ios
 ion-checkbox,css-prop,--checkbox-background-checked,md
-ion-checkbox,css-prop,--checkmark-color,ionic
 ion-checkbox,css-prop,--checkmark-color,ios
 ion-checkbox,css-prop,--checkmark-color,md
-ion-checkbox,css-prop,--checkmark-width,ionic
 ion-checkbox,css-prop,--checkmark-width,ios
 ion-checkbox,css-prop,--checkmark-width,md
-ion-checkbox,css-prop,--size,ionic
 ion-checkbox,css-prop,--size,ios
 ion-checkbox,css-prop,--size,md
-ion-checkbox,css-prop,--transition,ionic
 ion-checkbox,css-prop,--transition,ios
 ion-checkbox,css-prop,--transition,md
 ion-checkbox,part,container

core/src/components/checkbox/checkbox.ionic.scss

@@ -1,34 +1,45 @@
-@import "./checkbox";
-@import "./checkbox.ionic.vars";
+@use "../../themes/ionic/ionic.globals.scss" as globals;
 
 // Ionic Checkbox
 // --------------------------------------------------
 
 :host {
   // Border
-  --border-radius: #{$checkbox-ionic-border-radius};
-  --border-width: #{$checkbox-ionic-border-width};
-  --border-style: #{$checkbox-ionic-border-style};
-  --border-color: #{$checkbox-ionic-background-color-off};
+  --border-width: #{globals.$ionic-border-size-025};
+  --border-style: #{globals.$ionic-border-style-solid};
+  --border-color: #{globals.$ionic-color-neutral-800};
   --checkmark-width: 3;
 
   // Focus
-  --focus-ring-color: #9ec4fd;
-  --focus-ring-width: 2px;
-  --focus-ring-offset: 2px;
+  --focus-ring-color: #{globals.$ionic-state-focus-1};
+  --focus-ring-width: #{globals.$ionic-border-size-050};
+  --focus-ring-offset: #{globals.$ionic-space-050};
 
   // Size
-  --size: #{$checkbox-ionic-size};
+  --size: #{globals.$ionic-scale-600};
+  --checkbox-background-checked: #{globals.$ionic-color-primary-base};
+  --border-color-checked: #{globals.$ionic-color-primary-base};
+  --checkmark-color: #{globals.$ionic-color-base-white};
+  --transition: none;
+
+  display: inline-block;
+
+  position: relative;
+
+  cursor: pointer;
+
+  user-select: none;
+  z-index: 2;
 
   // Checkbox Target area
   // --------------------------------------------------
   &::after {
-    @include position(50%, 0, null, 0);
+    @include globals.position(50%, 0, null, 0);
 
     position: absolute;
 
     height: 100%;
-    min-height: 48px;
+    min-height: globals.$ionic-scale-1200;
 
     transform: translateY(-50%);
 
@@ -44,60 +55,303 @@
   }
 }
 
+:host(.in-item) {
+  flex: 1 1 0;
+
+  width: 100%;
+  height: 100%;
+}
+
+/**
+ * Checkbox can be slotted
+ * in components such as item and
+ * toolbar which is why we do not
+ * limit the below behavior to just ion-item.
+ */
+:host([slot="start"]),
+:host([slot="end"]) {
+  // Reset the flex property when the checkbox
+  // is slotted to avoid growing the element larger
+  // than its content.
+  flex: initial;
+
+  width: auto;
+}
+
+.checkbox-wrapper {
+  display: flex;
+
+  flex-grow: 1;
+
+  align-items: center;
+
+  height: inherit;
+
+  cursor: inherit;
+}
+
+.label-text-wrapper {
+  text-overflow: ellipsis;
+
+  white-space: nowrap;
+
+  overflow: hidden;
+}
+
+:host(.in-item) .label-text-wrapper {
+  @include globals.margin(globals.$ionic-space-250, null, globals.$ionic-space-250, null);
+}
+
+:host(.in-item.checkbox-label-placement-stacked) .label-text-wrapper {
+  @include globals.margin(globals.$ionic-space-250, null, globals.$ionic-space-400, null);
+}
+
+:host(.in-item.checkbox-label-placement-stacked) .native-wrapper {
+  @include globals.margin(null, null, globals.$ionic-space-250, null);
+}
+
+/**
+ * If no label text is placed into the slot
+ * then the element should be hidden otherwise
+ * there will be additional margins added.
+ */
+.label-text-wrapper-hidden {
+  display: none;
+}
+
+input {
+  @include globals.visually-hidden();
+}
+
+.native-wrapper {
+  display: flex;
+
+  align-items: center;
+}
+
+.checkbox-icon {
+  @include globals.border-radius(var(--border-radius));
+
+  position: relative;
+
+  width: var(--size);
+  height: var(--size);
+
+  transition: var(--transition);
+
+  border-width: var(--border-width);
+  border-style: var(--border-style);
+  border-color: var(--border-color);
+
+  background: var(--checkbox-background);
+
+  box-sizing: border-box;
+}
+
+.checkbox-icon path {
+  fill: none;
+  stroke: var(--checkmark-color);
+  stroke-width: var(--checkmark-width);
+
+  opacity: 0;
+}
+
+// Justify Content
+// ---------------------------------------------
+
+:host(.checkbox-justify-space-between) .checkbox-wrapper {
+  justify-content: space-between;
+}
+
+:host(.checkbox-justify-start) .checkbox-wrapper {
+  justify-content: start;
+}
+
+:host(.checkbox-justify-end) .checkbox-wrapper {
+  justify-content: end;
+}
+
+// Align Items
+// ---------------------------------------------
+
+:host(.checkbox-alignment-start) .checkbox-wrapper {
+  align-items: start;
+}
+
+:host(.checkbox-alignment-center) .checkbox-wrapper {
+  align-items: center;
+}
+
+// Label Placement - Start
+// ----------------------------------------------------------------
+
+/**
+ * Label is on the left of the checkbox in LTR and
+ * on the right in RTL.
+ */
+:host(.checkbox-label-placement-start) .checkbox-wrapper {
+  flex-direction: row;
+}
+
+:host(.checkbox-label-placement-start) .label-text-wrapper {
+  /**
+   * The margin between the label and
+   * the checkbox should be on the end
+   * when the label sits at the start.
+   */
+  @include globals.margin(null, globals.$ionic-space-400, null, 0);
+}
+
+// Label Placement - End
+// ----------------------------------------------------------------
+
+/**
+ * Label is on the right of the checkbox in LTR and
+ * on the left in RTL.
+ */
+:host(.checkbox-label-placement-end) .checkbox-wrapper {
+  flex-direction: row-reverse;
+}
+
+/**
+ * The margin between the label and
+ * the checkbox should be on the start
+ * when the label sits at the end.
+ */
+:host(.checkbox-label-placement-end) .label-text-wrapper {
+  @include globals.margin(null, 0, null, globals.$ionic-space-400);
+}
+
+// Label Placement - Fixed
+// ----------------------------------------------------------------
+
+:host(.checkbox-label-placement-fixed) .label-text-wrapper {
+  /**
+   * The margin between the label and
+   * the checkbox should be on the end
+   * when the label sits at the start.
+   */
+  @include globals.margin(null, globals.$ionic-space-400, null, 0);
+}
+
+/**
+ * Label is on the left of the checkbox in LTR and
+ * on the right in RTL. Label also has a fixed width.
+ */
+:host(.checkbox-label-placement-fixed) .label-text-wrapper {
+  flex: 0 0 100px;
+
+  width: 100px;
+  min-width: 100px;
+  max-width: 200px;
+}
+
+// Label Placement - Stacked
+// ----------------------------------------------------------------
+
+/**
+ * Label is on top of the checkbox.
+ */
+:host(.checkbox-label-placement-stacked) .checkbox-wrapper {
+  flex-direction: column;
+}
+
+:host(.checkbox-label-placement-stacked) .label-text-wrapper {
+  @include globals.transform(scale(0.75));
+
+  /**
+   * The margin between the label and
+   * the checkbox should be on the bottom
+   * when the label sits at the top.
+   */
+  @include globals.margin(null, 0, globals.$ionic-space-400, 0);
+
+  /**
+   * Label text should not extend
+   * beyond the bounds of the checkbox.
+   */
+  max-width: calc(100% / 0.75);
+}
+
+// TODO(ROU-10796): uncomment this when the scss compilation issue is fixed
+// :host(.checkbox-label-placement-stacked.checkbox-alignment-start) .label-text-wrapper {
+//   @include globals.transform-origin(start, top);
+// }
+
+// :host(.checkbox-label-placement-stacked.checkbox-alignment-center) .label-text-wrapper {
+//   @include globals.transform-origin(center, top);
+// }
+
 // Ionic Design Checkbox Sizes
 // --------------------------------------------------
 :host(.checkbox-size-small) {
-  // Size
-  --size: #{$checkbox-ionic-small-size};
+  --size: #{globals.$ionic-scale-400};
+}
+
+// Checked / Indeterminate Checkbox
+// ---------------------------------------------
+
+:host(.checkbox-checked) .checkbox-icon,
+:host(.checkbox-indeterminate) .checkbox-icon {
+  border-color: var(--border-color-checked);
+
+  background: var(--checkbox-background-checked);
+}
+
+:host(.checkbox-checked) .checkbox-icon path,
+:host(.checkbox-indeterminate) .checkbox-icon path {
+  opacity: 1;
 }
 
 // Ionic Design Checkbox Invalid
 // --------------------------------------------------
 :host(.ion-invalid) {
-  --focus-ring-color: #ffafaf;
+  --focus-ring-color: #{globals.$ionic-state-focus-2};
 
   .checkbox-icon {
-    border-color: #f72c2c;
+    border-color: globals.$ionic-color-danger-800;
   }
 }
 
 // Checkbox Disabled
 // --------------------------------------------------
+:host(.checkbox-disabled) {
+  pointer-events: none;
+}
+
 // disabled, indeterminate checkbox
 :host(.checkbox-disabled.checkbox-indeterminate) .checkbox-icon {
-  /* TODO(FW-6183): Use design token variables */
-  border-width: 0;
+  border-width: globals.$ionic-border-size-0;
 
-  background-color: #{$background-color-step-600};
+  background-color: #{globals.$ionic-color-base-white};
 }
 
 // disabled, unchecked checkbox
 :host(.checkbox-disabled) .checkbox-icon {
-  /* TODO(FW-6183): Use design token variables */
-  border-color: #c9c9c9;
+  border-color: globals.$ionic-color-neutral-800;
 
-  background-color: #f5f5f5; // mix of #f5f5f5 with 60% #FFF
+  background-color: globals.$ionic-state-disabled;
 }
 
 // disabled, checked checkbox
 :host(.checkbox-disabled.checkbox-checked) .checkbox-icon {
-  border-width: 0;
+  border-width: globals.$ionic-border-size-0;
 
-  background-color: $background-color-step-100;
+  background-color: globals.$ionic-color-primary-base;
+
+  opacity: 0.6;
 }
 
 // Checkbox Hover
 // --------------------------------------------------------
 @media (any-hover: hover) {
   :host(:hover) .checkbox-icon {
-    /* TODO(FW-6183): Use design token variables */
-    background-color: #ececec; // mix of 'white', '#121212', 0.08, 'rgb'
+    background-color: globals.$ionic-color-neutral-100;
   }
 
   :host(:hover.checkbox-checked) .checkbox-icon,
   :host(:hover.checkbox-indeterminate) .checkbox-icon {
-    /* TODO(FW-6183): Use design token variables */
-    background-color: #1061da; // mix of '#1068eb', '#121212', 0.08, 'rgb'
+    background-color: globals.$ionic-color-primary-800;
   }
 }
 
@@ -105,33 +359,35 @@
 // --------------------------------------------------
 // Only show the focus ring when the checkbox is focused and not disabled
 :host(.ion-focused:not(.checkbox-disabled)) .checkbox-icon {
-  outline: var(--focus-ring-width) solid var(--focus-ring-color);
+  outline: var(--focus-ring-width) globals.$ionic-border-style-solid var(--focus-ring-color);
   outline-offset: var(--focus-ring-offset);
 }
 
 // Checkbox: Active
 // --------------------------------------------------------
 :host(.ion-activated) .checkbox-icon {
-  /* TODO(FW-6183): Use design token variables */
-  background-color: #e3e3e3; // mix of 'white', '#121212', 0.12, 'rgb'
+  background-color: globals.$ionic-color-neutral-200;
 }
 
 :host(.ion-activated.checkbox-checked) .checkbox-icon,
 :host(.ion-activated.checkbox-indeterminate) .checkbox-icon {
-  /* TODO(FW-6183): Use design token variables */
-  background-color: #105ed1; // mix of '#1068eb', '#121212', 0.12, 'rgb'
+  background-color: globals.$ionic-color-primary-900;
 }
 
 // Ionic Design Checkbox Shapes
 // --------------------------------------------------
 :host(.checkbox-shape-soft) {
-  --border-radius: #{$checkbox-ionic-border-radius};
+  --border-radius: #{globals.$ionic-border-radius-100};
+}
+
+:host(.checkbox-size-small.checkbox-shape-soft) {
+  --border-radius: #{globals.$ionic-border-radius-050};
 }
 
 :host(.checkbox-shape-rectangular) {
-  --border-radius: #{$checkbox-ionic-rectangular-border};
+  --border-radius: #{globals.$ionic-border-radius-0};
 }
 
 .checkbox-wrapper {
-  min-height: 48px;
+  min-height: #{globals.$ionic-scale-1200};
 }

core/src/components/checkbox/checkbox.ionic.vars.scss

@@ -1,31 +0,0 @@
-@import "../../themes/native/native.globals";
-
-// Ionic Checkbox Variables
-// --------------------------------------------------
-
-/// @prop - The default width and height of the checkbox
-$checkbox-ionic-size: 24px;
-
-/// @prop - The background color of the checkbox when the checkbox is unchecked
-$checkbox-ionic-background-color-off: $background-color-step-400;
-
-/// @prop - Border style of the checkbox
-$checkbox-ionic-border-style: solid;
-
-/// @prop - Border width of the checkbox
-$checkbox-ionic-border-width: 1px;
-
-/// @prop - The border radius of the checkbox
-/// With a default size of 24px, the border radius is calculated as 24px / 4 - 2px = 4px
-/// With a small size of 16px, the border radius is calculated as 16px / 4 - 2px = 2px;
-$checkbox-ionic-border-radius: calc(var(--size) / 4 - 2px);
-
-/// @prop - Icon size of the checkbox for the small size
-$checkbox-ionic-small-size: 16px;
-
-// Checkbox Shapes
-// -------------------------------------------------------------------------------
-
-/* Rectangular */
-/// @prop - Rectangular border radius of the checkbox
-$checkbox-ionic-rectangular-border: 0;