chore: sync with main

chore: sync with main

.github/workflows/actions/update-reference-screenshots/action.yml

@@ -35,7 +35,16 @@ runs:
         git config user.name ionitron
         git config user.email hi@ionicframework.com
         git add src/\*.png --force
-        git commit -m "chore(): add updated snapshots"
-        git push
+
+        if git diff --exit-code; then
+          echo -e "\033[1;31m⚠️ Error: No new screenshots generated ⚠️\033[0m"
+          echo -e "\033[1;31mThis means that there were zero visual diffs when running screenshot tests.\033[0m"
+          echo -e "\033[1;31mMake sure you have pushed any code changes that would result in visual diffs.\033[0m"
+          exit 1
+        else
+          git commit -m "chore(): add updated snapshots"
+          git push
+        fi
+
       shell: bash
       working-directory: ./core

core/api.txt

@@ -289,12 +289,13 @@ ion-card-title,prop,mode,"ios" | "md",undefined,false,false
 ion-card-title,css-prop,--color
 
 ion-checkbox,shadow
+ion-checkbox,prop,alignment,"center" | "start",'center',false,false
 ion-checkbox,prop,checked,boolean,false,false,false
 ion-checkbox,prop,color,"danger" | "dark" | "light" | "medium" | "primary" | "secondary" | "success" | "tertiary" | "warning" | string & Record<never, never> | undefined,undefined,false,true
 ion-checkbox,prop,disabled,boolean,false,false,false
 ion-checkbox,prop,indeterminate,boolean,false,false,false
 ion-checkbox,prop,justify,"end" | "space-between" | "start",'space-between',false,false
-ion-checkbox,prop,labelPlacement,"end" | "fixed" | "start",'start',false,false
+ion-checkbox,prop,labelPlacement,"end" | "fixed" | "stacked" | "start",'start',false,false
 ion-checkbox,prop,legacy,boolean | undefined,undefined,false,false
 ion-checkbox,prop,mode,"ios" | "md",undefined,false,false
 ion-checkbox,prop,name,string,this.inputId,false,false
@@ -427,6 +428,10 @@ ion-datetime,css-prop,--background-rgb
 ion-datetime,css-prop,--title-color
 ion-datetime,css-prop,--wheel-fade-background-rgb
 ion-datetime,css-prop,--wheel-highlight-background
+ion-datetime,part,calendar-day
+ion-datetime,part,calendar-day active
+ion-datetime,part,calendar-day disabled
+ion-datetime,part,calendar-day today
 ion-datetime,part,month-year-button
 ion-datetime,part,time-button
 ion-datetime,part,time-button active
@@ -1008,10 +1013,11 @@ ion-progress-bar,part,stream
 ion-progress-bar,part,track
 
 ion-radio,shadow
+ion-radio,prop,alignment,"center" | "start",'center',false,false
 ion-radio,prop,color,"danger" | "dark" | "light" | "medium" | "primary" | "secondary" | "success" | "tertiary" | "warning" | string & Record<never, never> | undefined,undefined,false,true
 ion-radio,prop,disabled,boolean,false,false,false
 ion-radio,prop,justify,"end" | "space-between" | "start",'space-between',false,false
-ion-radio,prop,labelPlacement,"end" | "fixed" | "start",'start',false,false
+ion-radio,prop,labelPlacement,"end" | "fixed" | "stacked" | "start",'start',false,false
 ion-radio,prop,legacy,boolean | undefined,undefined,false,false
 ion-radio,prop,mode,"ios" | "md",undefined,false,false
 ion-radio,prop,name,string,this.inputId,false,false
@@ -1038,7 +1044,7 @@ ion-range,prop,debounce,number | undefined,undefined,false,false
 ion-range,prop,disabled,boolean,false,false,false
 ion-range,prop,dualKnobs,boolean,false,false,false
 ion-range,prop,label,string | undefined,undefined,false,false
-ion-range,prop,labelPlacement,"end" | "fixed" | "start",'start',false,false
+ion-range,prop,labelPlacement,"end" | "fixed" | "stacked" | "start",'start',false,false
 ion-range,prop,legacy,boolean | undefined,undefined,false,false
 ion-range,prop,max,number,100,false,false
 ion-range,prop,min,number,0,false,false
@@ -1478,12 +1484,13 @@ ion-toast,part,icon
 ion-toast,part,message
 
 ion-toggle,shadow
+ion-toggle,prop,alignment,"center" | "start",'center',false,false
 ion-toggle,prop,checked,boolean,false,false,false
 ion-toggle,prop,color,"danger" | "dark" | "light" | "medium" | "primary" | "secondary" | "success" | "tertiary" | "warning" | string & Record<never, never> | undefined,undefined,false,true
 ion-toggle,prop,disabled,boolean,false,false,false
 ion-toggle,prop,enableOnOffLabels,boolean | undefined,config.get('toggleOnOffLabels'),false,false
 ion-toggle,prop,justify,"end" | "space-between" | "start",'space-between',false,false
-ion-toggle,prop,labelPlacement,"end" | "fixed" | "start",'start',false,false
+ion-toggle,prop,labelPlacement,"end" | "fixed" | "stacked" | "start",'start',false,false
 ion-toggle,prop,legacy,boolean | undefined,undefined,false,false
 ion-toggle,prop,mode,"ios" | "md",undefined,false,false
 ion-toggle,prop,name,string,this.inputId,false,false

core/package-lock.json

@@ -9,7 +9,7 @@
       "version": "7.3.3",
       "license": "MIT",
       "dependencies": {
-        "@stencil/core": "^4.1.0",
+        "@stencil/core": "^4.2.0",
         "ionicons": "7.1.0",
         "tslib": "^2.1.0"
       },
@@ -1634,9 +1634,9 @@
       }
     },
     "node_modules/@stencil/core": {
-      "version": "4.1.0",
-      "resolved": "https://registry.npmjs.org/@stencil/core/-/core-4.1.0.tgz",
-      "integrity": "sha512-yIpL+CX02fy5zvFXwXcHZjjEILRm3aiONbucpfLIWPS7zcBAuucdROssartEa+D7E1JRko97ydxn1Ntdu4GoWg==",
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/@stencil/core/-/core-4.2.0.tgz",
+      "integrity": "sha512-HhxRs/b/VHTCM35lunFCzYajRQeYezsJQGgalENNpkrKUOPMvzv0dalXe8Yn/8p9eyn+GZVZuWLd0CAR4VWBbA==",
       "bin": {
         "stencil": "bin/stencil"
       },
@@ -11524,9 +11524,9 @@
       "requires": {}
     },
     "@stencil/core": {
-      "version": "4.1.0",
-      "resolved": "https://registry.npmjs.org/@stencil/core/-/core-4.1.0.tgz",
-      "integrity": "sha512-yIpL+CX02fy5zvFXwXcHZjjEILRm3aiONbucpfLIWPS7zcBAuucdROssartEa+D7E1JRko97ydxn1Ntdu4GoWg=="
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/@stencil/core/-/core-4.2.0.tgz",
+      "integrity": "sha512-HhxRs/b/VHTCM35lunFCzYajRQeYezsJQGgalENNpkrKUOPMvzv0dalXe8Yn/8p9eyn+GZVZuWLd0CAR4VWBbA=="
     },
     "@stencil/react-output-target": {
       "version": "0.5.3",

core/package.json

@@ -31,7 +31,7 @@
     "loader/"
   ],
   "dependencies": {
-    "@stencil/core": "^4.1.0",
+    "@stencil/core": "^4.2.0",
     "ionicons": "7.1.0",
     "tslib": "^2.1.0"
   },

core/src/components.d.ts

@@ -602,6 +602,10 @@ export namespace Components {
         "mode"?: "ios" | "md";
     }
     interface IonCheckbox {
+        /**
+          * How to control the alignment of the checkbox and label on the cross axis. `"start"`: The label and control will appear on the left of the cross axis in LTR, and on the right side in RTL. `"center"`: The label and control will appear at the center of the cross axis in both LTR and RTL.
+         */
+        "alignment": 'start' | 'center';
         /**
           * If `true`, the checkbox is selected.
          */
@@ -623,9 +627,9 @@ export namespace Components {
          */
         "justify": 'start' | 'end' | 'space-between';
         /**
-          * Where to place the label relative to the checkbox. `"start"`: The label will appear to the left of the checkbox in LTR and to the right in RTL. `"end"`: The label will appear to the right of the checkbox in LTR and to the left in RTL. `"fixed"`: The label has the same behavior as `"start"` except it also has a fixed width. Long text will be truncated with ellipses ("...").
+          * Where to place the label relative to the checkbox. `"start"`: The label will appear to the left of the checkbox in LTR and to the right in RTL. `"end"`: The label will appear to the right of the checkbox in LTR and to the left in RTL. `"fixed"`: The label has the same behavior as `"start"` except it also has a fixed width. Long text will be truncated with ellipses ("..."). `"stacked"`: The label will appear above the checkbox regardless of the direction. The alignment of the label can be controlled with the `alignment` property.
          */
-        "labelPlacement": 'start' | 'end' | 'fixed';
+        "labelPlacement": 'start' | 'end' | 'fixed' | 'stacked';
         /**
           * Set the `legacy` property to `true` to forcibly use the legacy form control markup. Ionic will only opt checkboxes in to the modern form markup when they are using either the `aria-label` attribute or have text in the default slot. As a result, the `legacy` property should only be used as an escape hatch when you want to avoid this automatic opt-in behavior.  Note that this property will be removed in an upcoming major release of Ionic, and all form components will be opted-in to using the modern form markup.
          */
@@ -2216,6 +2220,10 @@ export namespace Components {
         "value": number;
     }
     interface IonRadio {
+        /**
+          * How to control the alignment of the radio and label on the cross axis. `"start"`: The label and control will appear on the left of the cross axis in LTR, and on the right side in RTL. `"center"`: The label and control will appear at the center of the cross axis in both LTR and RTL.
+         */
+        "alignment": 'start' | 'center';
         /**
           * The color to use from your application's color palette. Default options are: `"primary"`, `"secondary"`, `"tertiary"`, `"success"`, `"warning"`, `"danger"`, `"light"`, `"medium"`, and `"dark"`. For more information on colors, see [theming](/docs/theming/basics).
          */
@@ -2229,9 +2237,9 @@ export namespace Components {
          */
         "justify": 'start' | 'end' | 'space-between';
         /**
-          * Where to place the label relative to the radio. `"start"`: The label will appear to the left of the radio in LTR and to the right in RTL. `"end"`: The label will appear to the right of the radio in LTR and to the left in RTL. `"fixed"`: The label has the same behavior as `"start"` except it also has a fixed width. Long text will be truncated with ellipses ("...").
+          * Where to place the label relative to the radio. `"start"`: The label will appear to the left of the radio in LTR and to the right in RTL. `"end"`: The label will appear to the right of the radio in LTR and to the left in RTL. `"fixed"`: The label has the same behavior as `"start"` except it also has a fixed width. Long text will be truncated with ellipses ("..."). `"stacked"`: The label will appear above the radio regardless of the direction. The alignment of the label can be controlled with the `alignment` property.
          */
-        "labelPlacement": 'start' | 'end' | 'fixed';
+        "labelPlacement": 'start' | 'end' | 'fixed' | 'stacked';
         /**
           * Set the `legacy` property to `true` to forcibly use the legacy form control markup. Ionic will only opt components in to the modern form markup when they are using either the `aria-label` attribute or the default slot that contains the label text. As a result, the `legacy` property should only be used as an escape hatch when you want to avoid this automatic opt-in behavior. Note that this property will be removed in an upcoming major release of Ionic, and all form components will be opted-in to using the modern form markup.
          */
@@ -2291,9 +2299,9 @@ export namespace Components {
          */
         "label"?: string;
         /**
-          * Where to place the label relative to the range. `"start"`: The label will appear to the left of the range in LTR and to the right in RTL. `"end"`: The label will appear to the right of the range in LTR and to the left in RTL. `"fixed"`: The label has the same behavior as `"start"` except it also has a fixed width. Long text will be truncated with ellipses ("...").
+          * Where to place the label relative to the range. `"start"`: The label will appear to the left of the range in LTR and to the right in RTL. `"end"`: The label will appear to the right of the range in LTR and to the left in RTL. `"fixed"`: The label has the same behavior as `"start"` except it also has a fixed width. Long text will be truncated with ellipses ("..."). `"stacked"`: The label will appear above the range regardless of the direction.
          */
-        "labelPlacement": 'start' | 'end' | 'fixed';
+        "labelPlacement": 'start' | 'end' | 'fixed' | 'stacked';
         /**
           * Set the `legacy` property to `true` to forcibly use the legacy form control markup. Ionic will only opt components in to the modern form markup when they are using either the `aria-label` attribute or the `label` property. As a result, the `legacy` property should only be used as an escape hatch when you want to avoid this automatic opt-in behavior. Note that this property will be removed in an upcoming major release of Ionic, and all form components will be opted-in to using the modern form markup.
          */
@@ -3165,6 +3173,10 @@ export namespace Components {
         "trigger": string | undefined;
     }
     interface IonToggle {
+        /**
+          * How to control the alignment of the toggle and label on the cross axis. ``"start"`: The label and control will appear on the left of the cross axis in LTR, and on the right side in RTL. `"center"`: The label and control will appear at the center of the cross axis in both LTR and RTL.
+         */
+        "alignment": 'start' | 'center';
         /**
           * If `true`, the toggle is selected.
          */
@@ -3186,9 +3198,9 @@ export namespace Components {
          */
         "justify": 'start' | 'end' | 'space-between';
         /**
-          * Where to place the label relative to the input. `"start"`: The label will appear to the left of the toggle in LTR and to the right in RTL. `"end"`: The label will appear to the right of the toggle in LTR and to the left in RTL. `"fixed"`: The label has the same behavior as `"start"` except it also has a fixed width. Long text will be truncated with ellipses ("...").
+          * Where to place the label relative to the input. `"start"`: The label will appear to the left of the toggle in LTR and to the right in RTL. `"end"`: The label will appear to the right of the toggle in LTR and to the left in RTL. `"fixed"`: The label has the same behavior as `"start"` except it also has a fixed width. Long text will be truncated with ellipses ("..."). `"stacked"`: The label will appear above the toggle regardless of the direction. The alignment of the label can be controlled with the `alignment` property.
          */
-        "labelPlacement": 'start' | 'end' | 'fixed';
+        "labelPlacement": 'start' | 'end' | 'fixed' | 'stacked';
         /**
           * Set the `legacy` property to `true` to forcibly use the legacy form control markup. Ionic will only opt components in to the modern form markup when they are using either the `aria-label` attribute or the default slot that contains the label text. As a result, the `legacy` property should only be used as an escape hatch when you want to avoid this automatic opt-in behavior. Note that this property will be removed in an upcoming major release of Ionic, and all form components will be opted-in to using the modern form markup.
          */
@@ -4625,6 +4637,10 @@ declare namespace LocalJSX {
         "mode"?: "ios" | "md";
     }
     interface IonCheckbox {
+        /**
+          * How to control the alignment of the checkbox and label on the cross axis. `"start"`: The label and control will appear on the left of the cross axis in LTR, and on the right side in RTL. `"center"`: The label and control will appear at the center of the cross axis in both LTR and RTL.
+         */
+        "alignment"?: 'start' | 'center';
         /**
           * If `true`, the checkbox is selected.
          */
@@ -4646,9 +4662,9 @@ declare namespace LocalJSX {
          */
         "justify"?: 'start' | 'end' | 'space-between';
         /**
-          * Where to place the label relative to the checkbox. `"start"`: The label will appear to the left of the checkbox in LTR and to the right in RTL. `"end"`: The label will appear to the right of the checkbox in LTR and to the left in RTL. `"fixed"`: The label has the same behavior as `"start"` except it also has a fixed width. Long text will be truncated with ellipses ("...").
+          * Where to place the label relative to the checkbox. `"start"`: The label will appear to the left of the checkbox in LTR and to the right in RTL. `"end"`: The label will appear to the right of the checkbox in LTR and to the left in RTL. `"fixed"`: The label has the same behavior as `"start"` except it also has a fixed width. Long text will be truncated with ellipses ("..."). `"stacked"`: The label will appear above the checkbox regardless of the direction. The alignment of the label can be controlled with the `alignment` property.
          */
-        "labelPlacement"?: 'start' | 'end' | 'fixed';
+        "labelPlacement"?: 'start' | 'end' | 'fixed' | 'stacked';
         /**
           * Set the `legacy` property to `true` to forcibly use the legacy form control markup. Ionic will only opt checkboxes in to the modern form markup when they are using either the `aria-label` attribute or have text in the default slot. As a result, the `legacy` property should only be used as an escape hatch when you want to avoid this automatic opt-in behavior.  Note that this property will be removed in an upcoming major release of Ionic, and all form components will be opted-in to using the modern form markup.
          */
@@ -6226,6 +6242,10 @@ declare namespace LocalJSX {
         "value"?: number;
     }
     interface IonRadio {
+        /**
+          * How to control the alignment of the radio and label on the cross axis. `"start"`: The label and control will appear on the left of the cross axis in LTR, and on the right side in RTL. `"center"`: The label and control will appear at the center of the cross axis in both LTR and RTL.
+         */
+        "alignment"?: 'start' | 'center';
         /**
           * The color to use from your application's color palette. Default options are: `"primary"`, `"secondary"`, `"tertiary"`, `"success"`, `"warning"`, `"danger"`, `"light"`, `"medium"`, and `"dark"`. For more information on colors, see [theming](/docs/theming/basics).
          */
@@ -6239,9 +6259,9 @@ declare namespace LocalJSX {
          */
         "justify"?: 'start' | 'end' | 'space-between';
         /**
-          * Where to place the label relative to the radio. `"start"`: The label will appear to the left of the radio in LTR and to the right in RTL. `"end"`: The label will appear to the right of the radio in LTR and to the left in RTL. `"fixed"`: The label has the same behavior as `"start"` except it also has a fixed width. Long text will be truncated with ellipses ("...").
+          * Where to place the label relative to the radio. `"start"`: The label will appear to the left of the radio in LTR and to the right in RTL. `"end"`: The label will appear to the right of the radio in LTR and to the left in RTL. `"fixed"`: The label has the same behavior as `"start"` except it also has a fixed width. Long text will be truncated with ellipses ("..."). `"stacked"`: The label will appear above the radio regardless of the direction. The alignment of the label can be controlled with the `alignment` property.
          */
-        "labelPlacement"?: 'start' | 'end' | 'fixed';
+        "labelPlacement"?: 'start' | 'end' | 'fixed' | 'stacked';
         /**
           * Set the `legacy` property to `true` to forcibly use the legacy form control markup. Ionic will only opt components in to the modern form markup when they are using either the `aria-label` attribute or the default slot that contains the label text. As a result, the `legacy` property should only be used as an escape hatch when you want to avoid this automatic opt-in behavior. Note that this property will be removed in an upcoming major release of Ionic, and all form components will be opted-in to using the modern form markup.
          */
@@ -6319,9 +6339,9 @@ declare namespace LocalJSX {
          */
         "label"?: string;
         /**
-          * Where to place the label relative to the range. `"start"`: The label will appear to the left of the range in LTR and to the right in RTL. `"end"`: The label will appear to the right of the range in LTR and to the left in RTL. `"fixed"`: The label has the same behavior as `"start"` except it also has a fixed width. Long text will be truncated with ellipses ("...").
+          * Where to place the label relative to the range. `"start"`: The label will appear to the left of the range in LTR and to the right in RTL. `"end"`: The label will appear to the right of the range in LTR and to the left in RTL. `"fixed"`: The label has the same behavior as `"start"` except it also has a fixed width. Long text will be truncated with ellipses ("..."). `"stacked"`: The label will appear above the range regardless of the direction.
          */
-        "labelPlacement"?: 'start' | 'end' | 'fixed';
+        "labelPlacement"?: 'start' | 'end' | 'fixed' | 'stacked';
         /**
           * Set the `legacy` property to `true` to forcibly use the legacy form control markup. Ionic will only opt components in to the modern form markup when they are using either the `aria-label` attribute or the `label` property. As a result, the `legacy` property should only be used as an escape hatch when you want to avoid this automatic opt-in behavior. Note that this property will be removed in an upcoming major release of Ionic, and all form components will be opted-in to using the modern form markup.
          */
@@ -7298,6 +7318,10 @@ declare namespace LocalJSX {
         "trigger"?: string | undefined;
     }
     interface IonToggle {
+        /**
+          * How to control the alignment of the toggle and label on the cross axis. ``"start"`: The label and control will appear on the left of the cross axis in LTR, and on the right side in RTL. `"center"`: The label and control will appear at the center of the cross axis in both LTR and RTL.
+         */
+        "alignment"?: 'start' | 'center';
         /**
           * If `true`, the toggle is selected.
          */
@@ -7319,9 +7343,9 @@ declare namespace LocalJSX {
          */
         "justify"?: 'start' | 'end' | 'space-between';
         /**
-          * Where to place the label relative to the input. `"start"`: The label will appear to the left of the toggle in LTR and to the right in RTL. `"end"`: The label will appear to the right of the toggle in LTR and to the left in RTL. `"fixed"`: The label has the same behavior as `"start"` except it also has a fixed width. Long text will be truncated with ellipses ("...").
+          * Where to place the label relative to the input. `"start"`: The label will appear to the left of the toggle in LTR and to the right in RTL. `"end"`: The label will appear to the right of the toggle in LTR and to the left in RTL. `"fixed"`: The label has the same behavior as `"start"` except it also has a fixed width. Long text will be truncated with ellipses ("..."). `"stacked"`: The label will appear above the toggle regardless of the direction. The alignment of the label can be controlled with the `alignment` property.
          */
-        "labelPlacement"?: 'start' | 'end' | 'fixed';
+        "labelPlacement"?: 'start' | 'end' | 'fixed' | 'stacked';
         /**
           * Set the `legacy` property to `true` to forcibly use the legacy form control markup. Ionic will only opt components in to the modern form markup when they are using either the `aria-label` attribute or the default slot that contains the label text. As a result, the `legacy` property should only be used as an escape hatch when you want to avoid this automatic opt-in behavior. Note that this property will be removed in an upcoming major release of Ionic, and all form components will be opted-in to using the modern form markup.
          */

core/src/components/checkbox/checkbox.scss

@@ -108,6 +108,14 @@
   @include margin($checkbox-item-label-margin-top, null, $checkbox-item-label-margin-bottom, null);
 }
 
+:host(.in-item.checkbox-label-placement-stacked) .label-text-wrapper {
+  @include margin($checkbox-item-label-margin-top, null, $form-control-label-margin, null);
+}
+
+:host(.in-item.checkbox-label-placement-stacked) .native-wrapper {
+  @include margin(null, null, $checkbox-item-label-margin-bottom, null);
+}
+
 /**
  * If no label text is placed into the slot
  * then the element should be hidden otherwise
@@ -181,6 +189,17 @@ input {
   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
 // ----------------------------------------------------------------
@@ -248,6 +267,24 @@ input {
   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 {
+  /**
+   * The margin between the label and
+   * the checkbox should be on the bottom
+   * when the label sits at the top.
+   */
+  @include margin(null, 0, $form-control-label-margin, 0);
+}
 
 // Checked / Indeterminate Checkbox
 // ---------------------------------------------

core/src/components/checkbox/checkbox.tsx

@@ -81,8 +81,9 @@ export class Checkbox implements ComponentInterface {
    * `"start"`: The label will appear to the left of the checkbox in LTR and to the right in RTL.
    * `"end"`: The label will appear to the right of the checkbox in LTR and to the left in RTL.
    * `"fixed"`: The label has the same behavior as `"start"` except it also has a fixed width. Long text will be truncated with ellipses ("...").
+   * `"stacked"`: The label will appear above the checkbox regardless of the direction. The alignment of the label can be controlled with the `alignment` property.
    */
-  @Prop() labelPlacement: 'start' | 'end' | 'fixed' = 'start';
+  @Prop() labelPlacement: 'start' | 'end' | 'fixed' | 'stacked' = 'start';
 
   /**
    * How to pack the label and checkbox within a line.
@@ -95,6 +96,13 @@ export class Checkbox implements ComponentInterface {
    */
   @Prop() justify: 'start' | 'end' | 'space-between' = 'space-between';
 
+  /**
+   * How to control the alignment of the checkbox and label on the cross axis.
+   * `"start"`: The label and control will appear on the left of the cross axis in LTR, and on the right side in RTL.
+   * `"center"`: The label and control will appear at the center of the cross axis in both LTR and RTL.
+   */
+  @Prop() alignment: 'start' | 'center' = 'center';
+
   // TODO(FW-3100): remove this
   /**
    * Set the `legacy` property to `true` to forcibly use the legacy form control markup.
@@ -224,6 +232,7 @@ export class Checkbox implements ComponentInterface {
       labelPlacement,
       name,
       value,
+      alignment,
     } = this;
     const mode = getIonMode(this);
     const path = getSVGPath(mode, indeterminate);
@@ -240,6 +249,7 @@ export class Checkbox implements ComponentInterface {
           'checkbox-indeterminate': indeterminate,
           interactive: true,
           [`checkbox-justify-${justify}`]: true,
+          [`checkbox-alignment-${alignment}`]: true,
           [`checkbox-label-placement-${labelPlacement}`]: true,
         })}
       >

core/src/components/checkbox/test/item/checkbox.e2e.ts

@@ -70,4 +70,21 @@ configs({ directions: ['ltr'], modes: ['md'] }).forEach(({ title, screenshot, co
       await expect(list).toHaveScreenshot(screenshot(`checkbox-long-label-in-item`));
     });
   });
+
+  test.describe(title('checkbox: stacked label in item'), () => {
+    test('should render margins correctly when using stacked label in item', async ({ page }) => {
+      await page.setContent(
+        `
+          <ion-list>
+            <ion-item>
+              <ion-checkbox label-placement="stacked">Enable Notifications</ion-checkbox>
+            </ion-item>
+          </ion-list>
+        `,
+        config
+      );
+      const list = page.locator('ion-list');
+      await expect(list).toHaveScreenshot(screenshot(`checkbox-stacked-label-in-item`));
+    });
+  });
 });

core/src/components/checkbox/test/item/index.html

@@ -137,6 +137,27 @@
           </div>
         </div>
 
+        <h1>Placement Stacked</h1>
+        <div class="grid">
+          <div class="grid-item">
+            <h2>Align Start</h2>
+            <ion-list>
+              <ion-item>
+                <ion-checkbox label-placement="stacked" alignment="start">Enable Notifications</ion-checkbox>
+              </ion-item>
+            </ion-list>
+          </div>
+
+          <div class="grid-item">
+            <h2>Align Center</h2>
+            <ion-list>
+              <ion-item>
+                <ion-checkbox label-placement="stacked" alignment="center">Enable Notifications</ion-checkbox>
+              </ion-item>
+            </ion-list>
+          </div>
+        </div>
+
         <h1>States</h1>
         <div class="grid">
           <div class="grid-item">

core/src/components/checkbox/test/label/checkbox.e2e.ts

@@ -138,5 +138,31 @@ configs().forEach(({ title, screenshot, config }) => {
         await expect(checkbox).toHaveScreenshot(screenshot(`checkbox-label-fixed-justify-space-between`));
       });
     });
+
+    test.describe('checkbox: stacked placement', () => {
+      test('should align the label to the start of the container in the stacked position', async ({ page }) => {
+        await page.setContent(
+          `
+            <ion-checkbox label-placement="stacked" alignment="start" style="width: 200px">This is a long label</ion-checkbox>
+          `,
+          config
+        );
+
+        const checkbox = page.locator('ion-checkbox');
+        await expect(checkbox).toHaveScreenshot(screenshot(`checkbox-label-stacked-align-start`));
+      });
+
+      test('should align the label to the center of the container in the stacked position', async ({ page }) => {
+        await page.setContent(
+          `
+            <ion-checkbox label-placement="stacked" alignment="center" style="width: 200px">This is a long label</ion-checkbox>
+          `,
+          config
+        );
+
+        const checkbox = page.locator('ion-checkbox');
+        await expect(checkbox).toHaveScreenshot(screenshot(`checkbox-label-stacked-align-center`));
+      });
+    });
   });
 });

core/src/components/checkbox/test/label/index.html

@@ -104,6 +104,19 @@
             <ion-checkbox label-placement="fixed" justify="space-between">Enable Notifications</ion-checkbox>
           </div>
         </div>
+
+        <h1>Placement Stacked</h1>
+        <div class="grid">
+          <div class="grid-item">
+            <h2>Align Start</h2>
+            <ion-checkbox label-placement="stacked" alignment="start">Enable Notifications</ion-checkbox>
+          </div>
+
+          <div class="grid-item">
+            <h2>Align Center</h2>
+            <ion-checkbox label-placement="stacked" alignment="center">Enable Notifications</ion-checkbox>
+          </div>
+        </div>
       </ion-content>
     </ion-app>
   </body>

core/src/components/datetime-button/datetime-button.tsx

@@ -206,6 +206,10 @@ export class DatetimeButton implements ComponentInterface {
      */
     const parsedDatetimes = parseDate(parsedValues.length > 0 ? parsedValues : [getToday()]);
 
+    if (!parsedDatetimes) {
+      return;
+    }
+
     /**
      * If developers incorrectly use multiple="true"
      * with non "date" datetimes, then just select

core/src/components/datetime/datetime.ios.scss

@@ -20,7 +20,7 @@
   @include padding($datetime-ios-padding, $datetime-ios-padding, $datetime-ios-padding, $datetime-ios-padding);
 
   border-bottom: $datetime-ios-border-color;
-  
+
   font-size: 14px;
 }
 
@@ -85,27 +85,32 @@
    */
   @include padding($datetime-ios-padding * 0.5, $datetime-ios-padding * 0.5, $datetime-ios-padding * 0.5, $datetime-ios-padding * 0.5);
 
+  align-items: center;
+
   height: calc(100% - #{$datetime-ios-padding});
 }
 
+:host .calendar-day-wrapper {
+  @include padding(4px);
+
+  // This is required so that the calendar day wrapper
+  // will collapse instead of expanding to fill the button
+  height: 0;
+
+  min-height: 16px;
+}
+
 :host .calendar-day {
+  width: $datetime-ios-day-width;
+  min-width: $datetime-ios-day-width;
+
+  height: $datetime-ios-day-height;
+
   font-size: 20px;
 }
 
-.calendar-day:focus .calendar-day-highlight,
-.calendar-day.calendar-day-active .calendar-day-highlight {
-  opacity: 0.2;
-}
-
-.calendar-day.calendar-day-active .calendar-day-highlight {
-  background: current-color(base);
-}
-
-// !important is needed here to overwrite custom highlight background, which is inline.
-// Does not apply to the active state because highlights aren't applied at all there.
-.calendar-day:focus .calendar-day-highlight {
-  /* stylelint-disable-next-line declaration-no-important */
-  background: current-color(base) !important;
+.calendar-day.calendar-day-active {
+  background: current-color(base, 0.2);
 }
 
 /**
@@ -135,12 +140,6 @@
   color: current-color(contrast);
 }
 
-.calendar-day.calendar-day-today.calendar-day-active .calendar-day-highlight {
-  background: current-color(base);
-
-  opacity: 1;
-}
-
 // Time / Header
 // -----------------------------------
 :host .datetime-time {

core/src/components/datetime/datetime.ios.vars.scss

@@ -15,3 +15,9 @@ $datetime-ios-time-width:           68px !default;
 
 /// @prop - Border radius of the time picker
 $datetime-ios-time-border-radius:   8px !default;
+
+/// @prop - Width of the calendar day
+$datetime-ios-day-width: 40px !default;
+
+/// @prop - Height of the calendar day
+$datetime-ios-day-height: $datetime-ios-day-width !default;

core/src/components/datetime/datetime.md.scss

@@ -69,27 +69,22 @@
 
 // Individual day button in month
 :host .calendar-day {
-  @include padding(13px, 0, 13px, 0px);
+  width: $datetime-md-day-width;
+  min-width: $datetime-md-day-width;
+
+  height: $datetime-md-day-height;
 
   font-size: $datetime-md-calendar-item-font-size;
 }
 
-.calendar-day:focus .calendar-day-highlight {
-  background: current-color(base, 0.2);
-
-  box-shadow: 0px 0px 0px 4px current-color(base, 0.2);
-}
-
 /**
  * Day that today but not selected
  * should have ion-color for text color.
  */
 :host .calendar-day.calendar-day-today {
-  color: current-color(base);
-}
-
-.calendar-day.calendar-day-today .calendar-day-highlight {
   border: 1px solid current-color(base);
+
+  color: current-color(base);
 }
 
 /**
@@ -101,7 +96,7 @@
   color: current-color(contrast);
 }
 
-.calendar-day.calendar-day-active .calendar-day-highlight {
+.calendar-day.calendar-day-active {
   border: 1px solid current-color(base);
 
   background: current-color(base);

core/src/components/datetime/datetime.md.vars.scss

@@ -15,3 +15,9 @@ $datetime-md-header-padding:           20px !default;
 
 /// @prop - Padding for content
 $datetime-md-padding:                  16px !default;
+
+/// @prop - Width of the calendar day
+$datetime-md-day-width: 42px !default;
+
+/// @prop - Height of the calendar day
+$datetime-md-day-height: $datetime-md-day-width !default;

core/src/components/datetime/datetime.scss

@@ -290,6 +290,10 @@ ion-picker-column-internal {
 }
 
 :host .calendar-body .calendar-month {
+  display: flex;
+
+  flex-flow: column;
+
   /**
    * Swiping should snap to at
    * most one month at a time.
@@ -325,13 +329,31 @@ ion-picker-column-internal {
   grid-template-columns: repeat(7, 1fr);
 }
 
+:host .calendar-day-wrapper {
+  display: flex;
+
+  align-items: center;
+  justify-content: center;
+
+  // Adding a min width and min height allows
+  // it to shrink smaller than its content
+  // which keeps the calendar day highlight
+  // larger while letting the grid items shrink
+  min-width: 0;
+
+  min-height: 0;
+
+  overflow: visible;
+}
+
 /**
  * Center the day text vertically
  * and horizontally within its grid cell.
  */
 :host .calendar-day {
-  @include padding(0px, 0px, 0px, 0px);
-  @include margin(0px, 0px, 0px, 0px);
+  @include border-radius(50%);
+  @include padding(0px);
+  @include margin(0px);
 
   display: flex;
 
@@ -362,16 +384,10 @@ ion-picker-column-internal {
   opacity: 0.4;
 }
 
-.calendar-day-highlight {
-  @include border-radius(32px, 32px, 32px, 32px);
-  @include padding(4px, 4px, 4px, 4px);
+.calendar-day:focus {
+  background: current-color(base, 0.2);
 
-  position: absolute;
-
-  width: 32px;
-  height: 32px;
-
-  z-index: -1;
+  box-shadow: 0px 0px 0px 4px current-color(base, 0.2);
 }
 
 // Time / Header

core/src/components/datetime/datetime.tsx

@@ -85,6 +85,12 @@ import {
  *
  * @part month-year-button - The button that opens the month/year picker when
  * using a grid style layout.
+ *
+ * @part calendar-day - The individual buttons that display a day inside of the datetime
+ * calendar.
+ * @part calendar-day active - The currently selected calendar day.
+ * @part calendar-day today - The calendar day that contains the current day.
+ * @part calendar-day disabled - The calendar day that is disabled.
  */
 @Component({
   tag: 'ion-datetime',
@@ -117,11 +123,7 @@ export class Datetime implements ComponentInterface {
 
   private prevPresentation: string | null = null;
 
-  /**
-   * Duplicate reference to `activeParts` that does not trigger a re-render of the component.
-   * Allows caching an instance of the `activeParts` in between render cycles.
-   */
-  private activePartsClone: DatetimeParts | DatetimeParts[] = [];
+  private resolveForceDateScrolling?: () => void;
 
   @State() showMonthAndYear = false;
 
@@ -140,6 +142,17 @@ export class Datetime implements ComponentInterface {
 
   @State() isTimePopoverOpen = false;
 
+  /**
+   * When defined, will force the datetime to render the month
+   * containing the specified date. Currently, this should only
+   * be used to enable immediately auto-scrolling to the new month,
+   * and should then be reset to undefined once the transition is
+   * finished and the forced month is now in view.
+   *
+   * Applies to grid-style datetimes only.
+   */
+  @State() forceRenderDate?: DatetimeParts;
+
   /**
    * The color to use from your application's color palette.
    * Default options are: `"primary"`, `"secondary"`, `"tertiary"`, `"success"`, `"warning"`, `"danger"`, `"light"`, `"medium"`, and `"dark"`.
@@ -221,6 +234,12 @@ export class Datetime implements ComponentInterface {
    */
   @Prop() presentation: DatetimePresentation = 'date-time';
 
+  private get isGridStyle() {
+    const { presentation, preferWheel } = this;
+    const hasDatePresentation = presentation === 'date' || presentation === 'date-time' || presentation === 'time-date';
+    return hasDatePresentation && !preferWheel;
+  }
+
   /**
    * The text to display on the picker's cancel button.
    */
@@ -302,11 +321,6 @@ export class Datetime implements ComponentInterface {
     this.parsedMinuteValues = convertToArrayOfNumbers(this.minuteValues);
   }
 
-  @Watch('activeParts')
-  protected activePartsChanged() {
-    this.activePartsClone = this.activeParts;
-  }
-
   /**
    * The locale to use for `ion-datetime`. This
    * impacts month and day name formatting.
@@ -356,54 +370,11 @@ export class Datetime implements ComponentInterface {
    * Update the datetime value when the value changes
    */
   @Watch('value')
-  protected valueChanged() {
-    const { value, minParts, maxParts, workingParts } = this;
+  protected async valueChanged() {
+    const { value } = this;
 
     if (this.hasValue()) {
-      this.warnIfIncorrectValueUsage();
-
-      /**
-       * Clones the value of the `activeParts` to the private clone, to update
-       * the date display on the current render cycle without causing another render.
-       *
-       * This allows us to update the current value's date/time display without
-       * refocusing or shifting the user's display (leaves the user in place).
-       */
-      const valueDateParts = parseDate(value);
-      if (valueDateParts) {
-        warnIfValueOutOfBounds(valueDateParts, minParts, maxParts);
-
-        if (Array.isArray(valueDateParts)) {
-          this.activePartsClone = [...valueDateParts];
-        } else {
-          const { month, day, year, hour, minute } = valueDateParts;
-          const ampm = hour != null ? (hour >= 12 ? 'pm' : 'am') : undefined;
-
-          this.activePartsClone = {
-            ...this.activeParts,
-            month,
-            day,
-            year,
-            hour,
-            minute,
-            ampm,
-          };
-
-          /**
-           * The working parts am/pm value must be updated when the value changes, to
-           * ensure the time picker hour column values are generated correctly.
-           *
-           * Note that we don't need to do this if valueDateParts is an array, since
-           * multiple="true" does not apply to time pickers.
-           */
-          this.setWorkingParts({
-            ...workingParts,
-            ampm,
-          });
-        }
-      } else {
-        printIonWarning(`Unable to parse date string: ${value}. Please provide a valid ISO 8601 datetime string.`);
-      }
+      this.processValue(value);
     }
 
     this.emitStyle();
@@ -596,9 +567,9 @@ export class Datetime implements ComponentInterface {
    * data. This should be used when rendering an
    * interface in an environment where the `value`
    * may not be set. This function works
-   * by returning the first selected date in
-   * "activePartsClone" and then falling back to
-   * defaultParts if no active date is selected.
+   * by returning the first selected date and then
+   * falling back to defaultParts if no active date
+   * is selected.
    */
   private getActivePartsWithFallback = () => {
     const { defaultParts } = this;
@@ -606,8 +577,8 @@ export class Datetime implements ComponentInterface {
   };
 
   private getActivePart = () => {
-    const { activePartsClone } = this;
-    return Array.isArray(activePartsClone) ? activePartsClone[0] : activePartsClone;
+    const { activeParts } = this;
+    return Array.isArray(activeParts) ? activeParts[0] : activeParts;
   };
 
   private closeParentOverlay = () => {
@@ -627,7 +598,7 @@ export class Datetime implements ComponentInterface {
   };
 
   private setActiveParts = (parts: DatetimeParts, removeDate = false) => {
-    const { multiple, minParts, maxParts, activePartsClone } = this;
+    const { multiple, minParts, maxParts, activeParts } = this;
 
     /**
      * When setting the active parts, it is possible
@@ -643,16 +614,7 @@ export class Datetime implements ComponentInterface {
     this.setWorkingParts(validatedParts);
 
     if (multiple) {
-      /**
-       * We read from activePartsClone here because valueChanged() only updates that,
-       * so it's the more reliable source of truth. If we read from activeParts, then
-       * if you click July 1, manually set the value to July 2, and then click July 3,
-       * the new value would be [July 1, July 3], ignoring the value set.
-       *
-       * We can then pass the new value to activeParts (rather than activePartsClone)
-       * since the clone will be updated automatically by activePartsChanged().
-       */
-      const activePartsArray = Array.isArray(activePartsClone) ? activePartsClone : [activePartsClone];
+      const activePartsArray = Array.isArray(activeParts) ? activeParts : [activeParts];
       if (removeDate) {
         this.activeParts = activePartsArray.filter((p) => !isSameDay(p, validatedParts));
       } else {
@@ -800,7 +762,7 @@ export class Datetime implements ComponentInterface {
     /**
      * Get the number of padding days so
      * we know how much to offset our next selector by
-     * to grab the correct calenday-day element.
+     * to grab the correct calendar-day element.
      */
     const padding = currentMonth.querySelectorAll('.calendar-day-padding');
     const { day } = this.workingParts;
@@ -814,7 +776,7 @@ export class Datetime implements ComponentInterface {
      * and focus it.
      */
     const dayEl = currentMonth.querySelector(
-      `.calendar-day:nth-of-type(${padding.length + day})`
+      `.calendar-day-wrapper:nth-of-type(${padding.length + day}) .calendar-day`
     ) as HTMLElement | null;
     if (dayEl) {
       dayEl.focus();
@@ -908,6 +870,20 @@ export class Datetime implements ComponentInterface {
         const monthBox = month.getBoundingClientRect();
         if (Math.abs(monthBox.x - box.x) > 2) return;
 
+        /**
+         * If we're force-rendering a month, assume we've
+         * scrolled to that and return it.
+         *
+         * If forceRenderDate is ever used in a context where the
+         * forced month is not immediately auto-scrolled to, this
+         * should be updated to also check whether `month` has the
+         * same month and year as the forced date.
+         */
+        const { forceRenderDate } = this;
+        if (forceRenderDate !== undefined) {
+          return { month: forceRenderDate.month, year: forceRenderDate.year, day: forceRenderDate.day };
+        }
+
         /**
          * From here, we can determine if the start
          * month or the end month was scrolled into view.
@@ -976,6 +952,10 @@ export class Datetime implements ComponentInterface {
 
           calendarBodyRef.scrollLeft = workingMonth.clientWidth * (isRTL(this.el) ? -1 : 1);
           calendarBodyRef.style.removeProperty('overflow');
+
+          if (this.resolveForceDateScrolling) {
+            this.resolveForceDateScrolling();
+          }
         });
       };
 
@@ -1193,13 +1173,21 @@ export class Datetime implements ComponentInterface {
   }
 
   private processValue = (value?: string | string[] | null) => {
-    const hasValue = value !== null && value !== undefined;
+    const hasValue = value !== null && value !== undefined && (!Array.isArray(value) || value.length > 0);
     const valueToProcess = hasValue ? parseDate(value) : this.defaultParts;
 
-    const { minParts, maxParts } = this;
+    const { minParts, maxParts, workingParts, el } = this;
 
     this.warnIfIncorrectValueUsage();
 
+    /**
+     * Return early if the value wasn't parsed correctly, such as
+     * if an improperly formatted date string was provided.
+     */
+    if (!valueToProcess) {
+      return;
+    }
+
     /**
      * Datetime should only warn of out of bounds values
      * if set by the user. If the `value` is undefined,
@@ -1218,19 +1206,11 @@ export class Datetime implements ComponentInterface {
      * that the values don't necessarily have to be in order.
      */
     const singleValue = Array.isArray(valueToProcess) ? valueToProcess[0] : valueToProcess;
+    const targetValue = clampDate(singleValue, minParts, maxParts);
 
-    const { month, day, year, hour, minute } = clampDate(singleValue, minParts, maxParts);
+    const { month, day, year, hour, minute } = targetValue;
     const ampm = parseAmPm(hour!);
 
-    this.setWorkingParts({
-      month,
-      day,
-      year,
-      hour,
-      minute,
-      ampm,
-    });
-
     /**
      * Since `activeParts` indicates a value that
      * been explicitly selected either by the
@@ -1258,6 +1238,67 @@ export class Datetime implements ComponentInterface {
        */
       this.activeParts = [];
     }
+
+    /**
+     * Only animate if:
+     * 1. We're using grid style (wheel style pickers should just jump to new value)
+     * 2. The month and/or year actually changed, and both are defined (otherwise there's nothing to animate to)
+     * 3. The calendar body is visible (prevents animation when in collapsed datetime-button, for example)
+     * 4. The month/year picker is not open (since you wouldn't see the animation anyway)
+     */
+    const didChangeMonth =
+      (month !== undefined && month !== workingParts.month) || (year !== undefined && year !== workingParts.year);
+    const bodyIsVisible = el.classList.contains('datetime-ready');
+    const { isGridStyle, showMonthAndYear } = this;
+    if (isGridStyle && didChangeMonth && bodyIsVisible && !showMonthAndYear) {
+      this.animateToDate(targetValue);
+    } else {
+      /**
+       * We only need to do this if we didn't just animate to a new month,
+       * since that calls prevMonth/nextMonth which calls setWorkingParts for us.
+       */
+      this.setWorkingParts({
+        month,
+        day,
+        year,
+        hour,
+        minute,
+        ampm,
+      });
+    }
+  };
+
+  private animateToDate = async (targetValue: DatetimeParts) => {
+    const { workingParts } = this;
+
+    /**
+     * Tell other render functions that we need to force the
+     * target month to appear in place of the actual next/prev month.
+     * Because this is a State variable, a rerender will be triggered
+     * automatically, updating the rendered months.
+     */
+    this.forceRenderDate = targetValue;
+
+    /**
+     * Flag that we've started scrolling to the forced date.
+     * The resolve function will be called by the datetime's
+     * scroll listener when it's done updating everything.
+     * This is a replacement for making prev/nextMonth async,
+     * since the logic we're waiting on is in a listener.
+     */
+    const forceDateScrollingPromise = new Promise<void>((resolve) => {
+      this.resolveForceDateScrolling = resolve;
+    });
+
+    /**
+     * Animate smoothly to the forced month. This will also update
+     * workingParts and correct the surrounding months for us.
+     */
+    const targetMonthIsBefore = isBefore(targetValue, workingParts);
+    targetMonthIsBefore ? this.prevMonth() : this.nextMonth();
+    await forceDateScrollingPromise;
+    this.resolveForceDateScrolling = undefined;
+    this.forceRenderDate = undefined;
   };
 
   componentWillLoad() {
@@ -1286,16 +1327,18 @@ export class Datetime implements ComponentInterface {
       }
     }
 
-    this.processMinParts();
-    this.processMaxParts();
     const hourValues = (this.parsedHourValues = convertToArrayOfNumbers(this.hourValues));
     const minuteValues = (this.parsedMinuteValues = convertToArrayOfNumbers(this.minuteValues));
     const monthValues = (this.parsedMonthValues = convertToArrayOfNumbers(this.monthValues));
     const yearValues = (this.parsedYearValues = convertToArrayOfNumbers(this.yearValues));
     const dayValues = (this.parsedDayValues = convertToArrayOfNumbers(this.dayValues));
 
-    const todayParts = (this.todayParts = parseDate(getToday()));
+    const todayParts = (this.todayParts = parseDate(getToday())!);
     this.defaultParts = getClosestValidDate(todayParts, monthValues, dayValues, yearValues, hourValues, minuteValues);
+
+    this.processMinParts();
+    this.processMaxParts();
+
     this.processValue(this.value);
 
     this.emitStyle();
@@ -2042,7 +2085,7 @@ export class Datetime implements ComponentInterface {
             const { isActive, isToday, ariaLabel, ariaSelected, disabled, text } = getCalendarDayState(
               this.locale,
               referenceParts,
-              this.activePartsClone,
+              this.activeParts,
               this.todayParts,
               this.minParts,
               this.maxParts,
@@ -2079,69 +2122,87 @@ export class Datetime implements ComponentInterface {
               dateStyle = getHighlightStyles(highlightedDates, dateIsoString, el);
             }
 
+            let dateParts = undefined;
+
+            // "Filler days" at the beginning of the grid should not get the calendar day
+            // CSS parts added to them
+            if (!isCalendarPadding) {
+              dateParts = `calendar-day${isActive ? ' active' : ''}${isToday ? ' today' : ''}${
+                isCalDayDisabled ? ' disabled' : ''
+              }`;
+            }
+
             return (
-              <button
-                tabindex="-1"
-                data-day={day}
-                data-month={month}
-                data-year={year}
-                data-index={index}
-                data-day-of-week={dayOfWeek}
-                disabled={isCalDayDisabled}
-                class={{
-                  'calendar-day-padding': isCalendarPadding,
-                  'calendar-day': true,
-                  'calendar-day-active': isActive,
-                  'calendar-day-today': isToday,
-                }}
-                style={
-                  dateStyle && {
-                    color: dateStyle.textColor,
-                  }
-                }
-                aria-hidden={isCalendarPadding ? 'true' : null}
-                aria-selected={ariaSelected}
-                aria-label={ariaLabel}
-                onClick={() => {
-                  if (isCalendarPadding) {
-                    return;
-                  }
+              <div class="calendar-day-wrapper">
+                <button
+                  // We need to use !important for the inline styles here because
+                  // otherwise the CSS shadow parts will override these styles.
+                  // See https://github.com/WICG/webcomponents/issues/847
+                  // Both the CSS shadow parts and highlightedDates styles are
+                  // provided by the developer, but highlightedDates styles should
+                  // always take priority.
+                  ref={(el) => {
+                    if (el) {
+                      el.style.setProperty('color', `${dateStyle ? dateStyle.textColor : ''}`, 'important');
+                      el.style.setProperty(
+                        'background-color',
+                        `${dateStyle ? dateStyle.backgroundColor : ''}`,
+                        'important'
+                      );
+                    }
+                  }}
+                  tabindex="-1"
+                  data-day={day}
+                  data-month={month}
+                  data-year={year}
+                  data-index={index}
+                  data-day-of-week={dayOfWeek}
+                  disabled={isCalDayDisabled}
+                  class={{
+                    'calendar-day-padding': isCalendarPadding,
+                    'calendar-day': true,
+                    'calendar-day-active': isActive,
+                    'calendar-day-today': isToday,
+                  }}
+                  part={dateParts}
+                  aria-hidden={isCalendarPadding ? 'true' : null}
+                  aria-selected={ariaSelected}
+                  aria-label={ariaLabel}
+                  onClick={() => {
+                    if (isCalendarPadding) {
+                      return;
+                    }
 
-                  this.setWorkingParts({
-                    ...this.workingParts,
-                    month,
-                    day,
-                    year,
-                  });
-
-                  // multiple only needs date info, so we can wipe out other fields like time
-                  if (multiple) {
-                    this.setActiveParts(
-                      {
-                        month,
-                        day,
-                        year,
-                      },
-                      isActive
-                    );
-                  } else {
-                    this.setActiveParts({
-                      ...activePart,
+                    this.setWorkingParts({
+                      ...this.workingParts,
                       month,
                       day,
                       year,
                     });
-                  }
-                }}
-              >
-                <div
-                  class="calendar-day-highlight"
-                  style={{
-                    backgroundColor: dateStyle?.backgroundColor,
+
+                    // multiple only needs date info, so we can wipe out other fields like time
+                    if (multiple) {
+                      this.setActiveParts(
+                        {
+                          month,
+                          day,
+                          year,
+                        },
+                        isActive
+                      );
+                    } else {
+                      this.setActiveParts({
+                        ...activePart,
+                        month,
+                        day,
+                        year,
+                      });
+                    }
                   }}
-                ></div>
-                {text}
-              </button>
+                >
+                  {text}
+                </button>
+              </div>
             );
           })}
         </div>
@@ -2151,7 +2212,7 @@ export class Datetime implements ComponentInterface {
   private renderCalendarBody() {
     return (
       <div class="calendar-body ion-focusable" ref={(el) => (this.calendarBodyRef = el)} tabindex="0">
-        {generateMonths(this.workingParts).map(({ month, year }) => {
+        {generateMonths(this.workingParts, this.forceRenderDate).map(({ month, year }) => {
           return this.renderMonth(month, year);
         })}
       </div>
@@ -2360,7 +2421,19 @@ export class Datetime implements ComponentInterface {
   }
 
   render() {
-    const { name, value, disabled, el, color, readonly, showMonthAndYear, preferWheel, presentation, size } = this;
+    const {
+      name,
+      value,
+      disabled,
+      el,
+      color,
+      readonly,
+      showMonthAndYear,
+      preferWheel,
+      presentation,
+      size,
+      isGridStyle,
+    } = this;
     const mode = getIonMode(this);
     const isMonthAndYearPresentation =
       presentation === 'year' || presentation === 'month' || presentation === 'month-year';
@@ -2368,7 +2441,6 @@ export class Datetime implements ComponentInterface {
     const monthYearPickerOpen = showMonthAndYear && !isMonthAndYearPresentation;
     const hasDatePresentation = presentation === 'date' || presentation === 'date-time' || presentation === 'time-date';
     const hasWheelVariant = hasDatePresentation && preferWheel;
-    const hasGrid = hasDatePresentation && !preferWheel;
 
     renderHiddenInput(true, el, name, formatValue(value), disabled);
 
@@ -2387,7 +2459,7 @@ export class Datetime implements ComponentInterface {
             [`datetime-presentation-${presentation}`]: true,
             [`datetime-size-${size}`]: true,
             [`datetime-prefer-wheel`]: hasWheelVariant,
-            [`datetime-grid`]: hasGrid,
+            [`datetime-grid`]: isGridStyle,
           }),
         }}
       >

core/src/components/datetime/test/basic/datetime.e2e.ts

@@ -490,3 +490,40 @@ configs({ modes: ['md'], directions: ['ltr'] }).forEach(({ title, screenshot, co
     });
   });
 });
+
+/**
+ * This behavior does not differ across
+ * directions.
+ */
+configs({ directions: ['ltr'] }).forEach(({ title, screenshot, config }) => {
+  test.describe(title('datetime: focus'), () => {
+    test('should focus the selected day and then the day after', async ({ page }) => {
+      await page.setContent(
+        `
+        <ion-datetime value="2023-08-01"></ion-datetime>
+      `,
+        config
+      );
+
+      await page.waitForSelector('.datetime-ready');
+
+      const datetime = page.locator('ion-datetime');
+
+      const day = datetime.locator(`.calendar-day[data-day='1'][data-month='8']`);
+
+      await day.focus();
+      await page.waitForChanges();
+
+      await expect(day).toBeFocused();
+      await expect(datetime).toHaveScreenshot(screenshot(`datetime-focus-selected-calendar-day`));
+
+      await page.keyboard.press('ArrowRight');
+      await page.waitForChanges();
+
+      const nextDay = datetime.locator(`.calendar-day[data-day='2'][data-month='8']`);
+
+      await expect(nextDay).toBeFocused();
+      await expect(datetime).toHaveScreenshot(screenshot(`datetime-focus-calendar-day`));
+    });
+  });
+});

core/src/components/datetime/test/color/datetime.e2e.ts

@@ -9,7 +9,7 @@ configs({ directions: ['ltr'] }).forEach(({ title, screenshot, config }) => {
     test('should not have visual regressions', async ({ page }) => {
       await page.goto('/src/components/datetime/test/color', config);
 
-      const datetime = page.locator('ion-datetime');
+      const datetime = page.locator('#color-datetime');
 
       await expect(datetime).toHaveScreenshot(screenshot(`datetime-color`));
 

core/src/components/datetime/test/color/index.html

@@ -9,11 +9,18 @@
     <script src="../../../../../scripts/testing/scripts.js"></script>
     <script type="module" src="../../../../../dist/ionic/ionic.esm.js"></script>
     <style>
+      ion-checkbox,
+      ion-select {
+        margin-inline-start: 10px;
+        margin-inline-end: 10px;
+      }
+
       .grid {
         display: grid;
-        grid-template-columns: repeat(2, minmax(250px, 1fr));
+        grid-template-columns: repeat(auto-fill, 250px);
         grid-gap: 20px;
       }
+
       h2 {
         font-size: 12px;
         font-weight: normal;
@@ -29,10 +36,14 @@
         border-radius: 8px;
       }
 
+      #color-name::first-letter {
+        text-transform: capitalize;
+      }
+
       /*
-       * Dark Colors
-       * -------------------------------------------
-       */
+      * Dark Theme
+      * -------------------------------------------
+      */
 
       body.dark {
         --ion-color-primary: #428cff;
@@ -100,9 +111,9 @@
       }
 
       /*
-       * iOS Dark Theme
-       * -------------------------------------------
-       */
+      * iOS Dark Theme
+      * -------------------------------------------
+      */
 
       .ios body.dark {
         --ion-background-color: #000000;
@@ -144,9 +155,9 @@
       }
 
       /*
-       * Material Design Dark Theme
-       * -------------------------------------------
-       */
+      * Material Design Dark Theme
+      * -------------------------------------------
+      */
 
       .md body.dark {
         --ion-background-color: #121212;
@@ -191,30 +202,23 @@
     <ion-app>
       <ion-header translucent="true">
         <ion-toolbar>
-          <ion-title>Datetime - Color</ion-title>
-          <ion-item lines="none" slot="end">
-            <ion-label>Dark Mode</ion-label>
-            <ion-checkbox slot="end"></ion-checkbox>
-          </ion-item>
-
-          <ion-item lines="none" slot="end">
-            <ion-label>Color</ion-label>
-            <ion-select value="danger">
-              <ion-select-option value="primary">Primary</ion-select-option>
-              <ion-select-option value="secondary">Secondary</ion-select-option>
-              <ion-select-option value="tertiary">Tertiary</ion-select-option>
-              <ion-select-option value="success">Success</ion-select-option>
-              <ion-select-option value="warning">Warning</ion-select-option>
-              <ion-select-option value="danger">Danger</ion-select-option>
-            </ion-select>
-          </ion-item>
+          <ion-checkbox>Dark Mode</ion-checkbox>
+          <ion-select label="Color" justify="end" slot="end" value="danger">
+            <ion-select-option value="primary">Primary</ion-select-option>
+            <ion-select-option value="secondary">Secondary</ion-select-option>
+            <ion-select-option value="tertiary">Tertiary</ion-select-option>
+            <ion-select-option value="success">Success</ion-select-option>
+            <ion-select-option value="warning">Warning</ion-select-option>
+            <ion-select-option value="danger">Danger</ion-select-option>
+          </ion-select>
         </ion-toolbar>
       </ion-header>
       <ion-content class="ion-padding">
         <div class="grid">
           <div class="grid-item">
-            <h2>Default</h2>
+            <h2 id="color-name">Danger</h2>
             <ion-datetime
+              id="color-datetime"
               color="danger"
               value="2022-05-03"
               show-default-title="true"
@@ -224,14 +228,14 @@
         </div>
       </ion-content>
       <script>
+        const colorDatetime = document.querySelector('#color-datetime');
+        const colorName = document.querySelector('#color-name');
         const colorSelect = document.querySelector('ion-select');
         const darkModeToggle = document.querySelector('ion-checkbox');
-        const datetimes = document.querySelectorAll('ion-datetime');
 
         colorSelect.addEventListener('ionChange', (ev) => {
-          datetimes.forEach((datetime) => {
-            datetime.color = ev.detail.value;
-          });
+          colorDatetime.color = ev.detail.value;
+          colorName.innerHTML = ev.detail.value;
         });
 
         darkModeToggle.addEventListener('ionChange', (ev) => {

core/src/components/datetime/test/custom/datetime.e2e.ts

@@ -14,7 +14,7 @@ configs({ directions: ['ltr'] }).forEach(({ title, screenshot, config }) => {
     });
 
     test('should allow styling time picker in grid style datetimes', async ({ page }) => {
-      const timeButton = page.locator('ion-datetime .time-body');
+      const timeButton = page.locator('#custom-grid .time-body');
       const popover = page.locator('.popover-viewport');
       const ionPopoverDidPresent = await page.spyOnEvent('ionPopoverDidPresent');
 
@@ -26,5 +26,41 @@ configs({ directions: ['ltr'] }).forEach(({ title, screenshot, config }) => {
       await expect(popover).toHaveScreenshot(screenshot(`datetime-custom-time-picker`));
       await expect(timeButton).toHaveScreenshot(screenshot(`datetime-custom-time-button-active`));
     });
+
+    test('should allow styling calendar days in grid style datetimes', async ({ page }) => {
+      const datetime = page.locator('#custom-calendar-days');
+
+      await expect(datetime).toHaveScreenshot(screenshot(`datetime-custom-calendar-days`));
+    });
+  });
+});
+
+/**
+ * This behavior does not differ across
+ * directions.
+ */
+configs({ directions: ['ltr'] }).forEach(({ title, screenshot, config }) => {
+  test.describe(title('datetime: custom focus'), () => {
+    test('should focus the selected day and then the day after', async ({ page }) => {
+      await page.goto(`/src/components/datetime/test/custom`, config);
+
+      const datetime = page.locator('#custom-calendar-days');
+
+      const day = datetime.locator(`.calendar-day[data-day='15'][data-month='6']`);
+
+      await day.focus();
+      await page.waitForChanges();
+
+      await expect(day).toBeFocused();
+      await expect(datetime).toHaveScreenshot(screenshot(`datetime-custom-focus-selected-calendar-day`));
+
+      await page.keyboard.press('ArrowRight');
+      await page.waitForChanges();
+
+      const nextDay = datetime.locator(`.calendar-day[data-day='16'][data-month='6']`);
+
+      await expect(nextDay).toBeFocused();
+      await expect(datetime).toHaveScreenshot(screenshot(`datetime-custom-focus-calendar-day`));
+    });
   });
 });