feat(tab-bar): add expand and shape props for ionic theme (#29888)

Co-authored-by: ionitron <[email protected]>

Author: thetaPC

core/api.txt

@@ -2177,8 +2177,10 @@ ion-tab,method,setActive,setActive() => Promise<void>
 
 ion-tab-bar,shadow
 ion-tab-bar,prop,color,"danger" | "dark" | "light" | "medium" | "primary" | "secondary" | "success" | "tertiary" | "warning" | string & Record<never, never> | undefined,undefined,false,true
+ion-tab-bar,prop,expand,"compact" | "full",'full',false,false
 ion-tab-bar,prop,mode,"ios" | "md",undefined,false,false
 ion-tab-bar,prop,selectedTab,string | undefined,undefined,false,false
+ion-tab-bar,prop,shape,"rectangular" | "round" | "soft" | undefined,undefined,false,false
 ion-tab-bar,prop,theme,"ios" | "md" | "ionic",undefined,false,false
 ion-tab-bar,prop,translucent,boolean,false,false,false
 ion-tab-bar,css-prop,--background,ionic

core/src/components.d.ts

@@ -3411,6 +3411,10 @@ export namespace Components {
           * 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).
          */
         "color"?: Color;
+        /**
+          * Set to `"compact"` to display a width based on the items inside the tab bar. This value will only work for the `ionic` theme.  Set to `"full"` to display a full width tab bar.  Defaults to `"full"`.
+         */
+        "expand": 'compact' | 'full';
         /**
           * The mode determines the platform behaviors of the component.
          */
@@ -3419,6 +3423,10 @@ export namespace Components {
           * The selected tab component
          */
         "selectedTab"?: string;
+        /**
+          * Set to `"soft"` for a tab bar with slightly rounded corners, `"round"` for a tab bar with fully rounded corners, or `"rectangular"` for a tab bar without rounded corners.  Defaults to `"round"` for the `"ionic"` theme, undefined for all other themes.
+         */
+        "shape"?: 'soft' | 'round' | 'rectangular';
         /**
           * The theme determines the visual appearance of the component.
          */
@@ -8765,6 +8773,10 @@ declare namespace LocalJSX {
           * 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).
          */
         "color"?: Color;
+        /**
+          * Set to `"compact"` to display a width based on the items inside the tab bar. This value will only work for the `ionic` theme.  Set to `"full"` to display a full width tab bar.  Defaults to `"full"`.
+         */
+        "expand"?: 'compact' | 'full';
         /**
           * The mode determines the platform behaviors of the component.
          */
@@ -8775,6 +8787,10 @@ declare namespace LocalJSX {
           * The selected tab component
          */
         "selectedTab"?: string;
+        /**
+          * Set to `"soft"` for a tab bar with slightly rounded corners, `"round"` for a tab bar with fully rounded corners, or `"rectangular"` for a tab bar without rounded corners.  Defaults to `"round"` for the `"ionic"` theme, undefined for all other themes.
+         */
+        "shape"?: 'soft' | 'round' | 'rectangular';
         /**
           * The theme determines the visual appearance of the component.
          */

core/src/components/tab-bar/tab-bar.common.scss

@@ -9,22 +9,13 @@
   align-items: center;
   justify-content: center;
 
-  width: auto;
-
-  /* stylelint-disable */
-  padding-right: var(--ion-safe-area-right);
-  padding-bottom: var(--ion-safe-area-bottom, 0);
-  padding-left: var(--ion-safe-area-left);
-  /* stylelint-enable */
-
   border-top: var(--border);
 
   background: var(--background);
   color: var(--color);
 
   text-align: center;
 
-  contain: strict;
   user-select: none;
 
   /* stylelint-disable-next-line declaration-no-important */
@@ -41,9 +32,6 @@
 }
 
 :host([slot="top"]) {
-  padding-top: var(--ion-safe-area-top, 0);
-  padding-bottom: 0;
-
   border-top: 0;
   border-bottom: var(--border);
 }
@@ -52,3 +40,25 @@
   /* stylelint-disable-next-line declaration-no-important */
   display: none !important;
 }
+
+// Tab Bar Expand
+// --------------------------------------------------
+
+/* Full */
+:host(.tab-bar-full) {
+  width: auto;
+
+  contain: strict;
+
+  /* stylelint-disable */
+  padding-bottom: var(--ion-safe-area-bottom, 0);
+
+  padding-right: var(--ion-safe-area-right);
+  padding-left: var(--ion-safe-area-left);
+  /* stylelint-enable */
+}
+
+:host([slot="top"].tab-bar-full) {
+  padding-top: var(--ion-safe-area-top, 0);
+  padding-bottom: 0;
+}

core/src/components/tab-bar/tab-bar.ionic.scss

@@ -19,16 +19,68 @@
    */
   min-height: calc(globals.$ionic-scale-1400 - calc(globals.$ionic-space-100 * 2));
 
-  padding-top: calc(globals.$ionic-space-100 + var(--ion-safe-area-top, 0));
-  padding-bottom: calc(globals.$ionic-space-100 + var(--ion-safe-area-bottom, 0));
+  gap: globals.$ionic-space-300;
+
+  // TODO(ROU-10853): replace this value with a layer token
+  z-index: 10;
+}
+
+// Tab Bar Expand
+// --------------------------------------------------
 
+/* Full */
+:host(.tab-bar-full) {
   /* stylelint-disable */
+  padding-top: globals.$ionic-space-100;
+  padding-bottom: calc(globals.$ionic-space-100 + var(--ion-safe-area-bottom, 0));
+
   padding-right: calc(globals.$ionic-space-400 + var(--ion-safe-area-right, 0));
   padding-left: calc(globals.$ionic-space-400 + var(--ion-safe-area-left, 0));
   /* stylelint-enable */
+}
 
-  gap: globals.$ionic-space-300;
+:host([slot="top"].tab-bar-full) {
+  padding-top: calc(globals.$ionic-space-100 + var(--ion-safe-area-top, 0));
+  padding-bottom: globals.$ionic-space-100;
+}
 
-  // TODO(ROU-10853): replace this value with a layer token
-  z-index: 10;
+/* Compact */
+:host(.tab-bar-compact) {
+  @include globals.padding(globals.$ionic-space-100, globals.$ionic-space-400);
+
+  position: absolute;
+
+  align-self: center;
+
+  width: fit-content;
+
+  box-shadow: #{globals.$ionic-elevation-200};
+
+  contain: content;
+}
+
+:host([slot="top"].tab-bar-compact) {
+  top: calc(globals.$ionic-space-100 + var(--ion-safe-area-top, 0));
+}
+
+:host([slot="bottom"].tab-bar-compact) {
+  bottom: calc(globals.$ionic-space-100 + var(--ion-safe-area-bottom, 0));
+}
+
+// Tab Bar Shapes
+// --------------------------------------------------
+
+/* Soft */
+:host(.tab-bar-soft) {
+  @include globals.border-radius(globals.$ionic-border-radius-400);
+}
+
+/* Round */
+:host(.tab-bar-round) {
+  @include globals.border-radius(globals.$ionic-border-radius-full);
+}
+
+/* Rectangular */
+:host(.tab-bar-rectangular) {
+  @include globals.border-radius(globals.$ionic-border-radius-0);
 }

core/src/components/tab-bar/tab-bar.tsx

@@ -56,6 +56,26 @@ export class TabBar implements ComponentInterface {
    */
   @Prop() translucent = false;
 
+  /**
+   * Set to `"compact"` to display a width based on the items
+   * inside the tab bar. This value will only work for the
+   * `ionic` theme.
+   *
+   * Set to `"full"` to display a full width tab bar.
+   *
+   * Defaults to `"full"`.
+   */
+  @Prop() expand: 'compact' | 'full' = 'full';
+
+  /**
+   * Set to `"soft"` for a tab bar with slightly rounded corners,
+   * `"round"` for a tab bar with fully rounded corners, or
+   * `"rectangular"` for a tab bar without rounded corners.
+   *
+   * Defaults to `"round"` for the `"ionic"` theme, undefined for all other themes.
+   */
+  @Prop() shape?: 'soft' | 'round' | 'rectangular';
+
   /** @internal */
   @Event() ionTabBarChanged!: EventEmitter<TabBarChangedEventDetail>;
 
@@ -96,9 +116,26 @@ export class TabBar implements ComponentInterface {
     this.ionTabBarLoaded.emit();
   }
 
+  private getShape(): string | undefined {
+    const theme = getIonTheme(this);
+    const { shape } = this;
+
+    // TODO(ROU-11234): Remove theme check when shapes are defined for all themes.
+    if (theme !== 'ionic') {
+      return undefined;
+    }
+
+    if (shape === undefined) {
+      return 'round';
+    }
+
+    return shape;
+  }
+
   render() {
-    const { color, translucent, keyboardVisible } = this;
+    const { color, translucent, keyboardVisible, expand } = this;
     const theme = getIonTheme(this);
+    const shape = this.getShape();
     const shouldHide = keyboardVisible && this.el.getAttribute('slot') !== 'top';
 
     return (
@@ -109,6 +146,8 @@ export class TabBar implements ComponentInterface {
           [theme]: true,
           'tab-bar-translucent': translucent,
           'tab-bar-hidden': shouldHide,
+          [`tab-bar-${expand}`]: true,
+          [`tab-bar-${shape}`]: shape !== undefined,
         })}
       >
         <slot></slot>

core/src/components/tab-bar/test/basic/tab-bar.e2e.ts

@@ -9,6 +9,12 @@ configs({ modes: ['ionic-md', 'md', 'ios'] }).forEach(({ title, screenshot, conf
     test('should not have visual regressions', async ({ page }) => {
       await page.setContent(
         `
+        <style>
+          :root {
+            background: #ccc7c7;
+          }
+        </style>
+
         <ion-tab-bar selected-tab="2">
           <ion-tab-button tab="1">
             <ion-icon name="home-outline"></ion-icon>