feat(ui5-dynamic-page-title): implement snapped title on mobile

packages/fiori/src/DynamicPage.hbs

@@ -17,7 +17,7 @@
 				{{> header-actions}}
 			{{/if}}
 		</header>
-
+		
 		{{#if headerInContent}}
 			<slot tabindex="{{headerTabIndex}}" ?aria-hidden="{{headerAriaHidden}}" name="headerArea"></slot>
 		{{/if}}
@@ -42,17 +42,19 @@
 </div>
 
 {{#*inline "header-actions"}}
-	{{#if hasHeading}}
-		<ui5-dynamic-page-header-actions
-			?snapped="{{headerSnapped}}"
-			?pinned="{{headerPinned}}"
-			?hide-pin-button="{{hidePinButton}}"
-			.accessibilityAttributes="{{_accAttributesForHeaderActions}}"
-			@ui5-expand-button-click={{onExpandClick}}
-			@ui5-pin-button-click={{onPinClick}}
-			@ui5-expand-button-hover-in={{onExpandHoverIn}}
-			@ui5-expand-button-hover-out={{onExpandHoverOut}}
-			>
-		</ui5-dynamic-page-header-actions>
-	{{/if}}
+	{{#unless hasSnappedTitleOnMobile}}
+		{{#if hasHeading}}
+			<ui5-dynamic-page-header-actions
+				?snapped="{{headerSnapped}}"
+				?pinned="{{headerPinned}}"
+				?hide-pin-button="{{hidePinButton}}"
+				.accessibilityAttributes="{{_accAttributesForHeaderActions}}"
+				@ui5-expand-button-click={{onExpandClick}}
+				@ui5-pin-button-click={{onPinClick}}
+				@ui5-expand-button-hover-in={{onExpandHoverIn}}
+				@ui5-expand-button-hover-out={{onExpandHoverOut}}
+				>
+			</ui5-dynamic-page-header-actions>
+		{{/if}}
+	{{/unless}}
 {{/inline}}

packages/fiori/src/DynamicPage.ts

@@ -13,6 +13,7 @@ import announce from "@ui5/webcomponents-base/dist/util/InvisibleMessage.js";
 import InvisibleMessageMode from "@ui5/webcomponents-base/dist/types/InvisibleMessageMode.js";
 import { getI18nBundle } from "@ui5/webcomponents-base/dist/i18nBundle.js";
 import type I18nBundle from "@ui5/webcomponents-base/dist/i18nBundle.js";
+import { isPhone } from "@ui5/webcomponents-base/dist/Device.js";
 
 import debounce from "@ui5/webcomponents-base/dist/util/debounce.js";
 
@@ -223,6 +224,7 @@ class DynamicPage extends UI5Element {
 		if (this.dynamicPageTitle) {
 			this.dynamicPageTitle.snapped = this._headerSnapped;
 			this.dynamicPageTitle.interactive = this.hasHeading;
+			this.dynamicPageTitle.hasSnappedTitleOnMobile = !!this.hasSnappedTitleOnMobile;
 		}
 	}
 
@@ -278,6 +280,10 @@ class DynamicPage extends UI5Element {
 		return this._headerSnapped;
 	}
 
+	get hasSnappedTitleOnMobile() {
+		return isPhone() && this.headerSnapped && this.dynamicPageTitle?.snappedTitleOnMobile.length;
+	}
+
 	/**
 	 * Defines if the header is snapped.
 	 *
@@ -327,6 +333,11 @@ class DynamicPage extends UI5Element {
 		this.fireEvent("title-toggle");
 		await renderFinished();
 		this.headerActions?.focusExpandButton();
+
+		if (this.hasSnappedTitleOnMobile) {
+			this.dynamicPageTitle?.focus();
+		}
+
 		announce(this._headerLabel, InvisibleMessageMode.Polite);
 	}
 

packages/fiori/src/DynamicPageTitle.hbs

@@ -9,39 +9,48 @@
     aria-labelledby="{{_ariaLabelledBy}}"
     aria-describedby="{{_id}}-toggle-description">
   </span>
-  <div class="ui5-dynamic-page-title--top-area">
-    <slot name="breadcrumbs"></slot>
 
-    {{#if mobileNavigationActions}}
-      <slot name="navigationBar"></slot>
-    {{/if}}
-  </div>
+  {{#if hasSnappedTitleOnMobile}}
+    <div id="{{_id}}-heading" class="ui5-dynamic-page--snapped-title-on-mobile">
+        <slot name="snappedTitleOnMobile"></slot>
+        <ui5-icon name="slim-arrow-down" mode="Decorative"></ui5-icon>
+    </div>
+  {{else}}
+    <div class="ui5-dynamic-page-title--top-area">
+      <slot name="breadcrumbs"></slot>
 
-  <div class="ui5-dynamic-page-title--wrapper"
-    @ui5-_min-content-width-change={{onMinContentWidthChange}}>
-    <div id="{{_id}}-heading" class="ui5-dynamic-page-title--heading">
-      <slot name="{{headingSlotName}}"></slot>
+      {{#if mobileNavigationActions}}
+        <slot name="navigationBar"></slot>
+      {{/if}}
     </div>
 
-    {{#if hasContent}}
-      <div class="ui5-dynamic-page-title--content"
-        style="{{styles.content}}">
-        <slot></slot>
+    <div class="ui5-dynamic-page-title--wrapper"
+      @ui5-_min-content-width-change={{onMinContentWidthChange}}>
+      <div id="{{_id}}-heading" class="ui5-dynamic-page-title--heading">
+        <slot name="{{headingSlotName}}"></slot>
       </div>
-    {{/if}}
 
-    <div class="ui5-dynamic-page-title--actions"
-      style="{{styles.actions}}">
-      <slot name="actionsBar"></slot>
-      {{#unless mobileNavigationActions}}
-        {{#if _needsSeparator}}
-          <div class="ui5-dynamic-page-title--actions-separator"></div>
-        {{/if}}
-        <slot name="navigationBar"></slot>
-      {{/unless}}
+      {{#if hasContent}}
+        <div class="ui5-dynamic-page-title--content"
+          style="{{styles.content}}">
+          <slot></slot>
+        </div>
+      {{/if}}
+
+      <div class="ui5-dynamic-page-title--actions"
+        style="{{styles.actions}}">
+        <slot name="actionsBar"></slot>
+        {{#unless mobileNavigationActions}}
+          {{#if _needsSeparator}}
+            <div class="ui5-dynamic-page-title--actions-separator"></div>
+          {{/if}}
+          <slot name="navigationBar"></slot>
+        {{/unless}}
+      </div>
     </div>
-  </div>
 
-  <slot name="{{subheadingSlotName}}"></slot>
+    <slot name="{{subheadingSlotName}}"></slot>
+  {{/if}}
+
   <span id="{{_id}}-toggle-description" class="ui5-hidden-text">{{_ariaDescribedbyText}}</span>
 </div>

packages/fiori/src/DynamicPageTitle.ts

@@ -13,6 +13,8 @@ import type Toolbar from "@ui5/webcomponents/dist/Toolbar.js";
 import type { ToolbarMinWidthChangeEventDetail } from "@ui5/webcomponents/dist/Toolbar.js";
 import ToolbarItemOverflowBehavior from "@ui5/webcomponents/dist/types/ToolbarItemOverflowBehavior.js";
 import { isDesktop } from "@ui5/webcomponents-base/dist/Device.js";
+import Icon from "@ui5/webcomponents/dist/Icon.js";
+import Title from "@ui5/webcomponents/dist/Title.js";
 
 // Template
 import DynamicPageTitleTemplate from "./generated/templates/DynamicPageTitleTemplate.lit.js";
@@ -63,6 +65,7 @@ import {
 	renderer: litRender,
 	styles: DynamicPageTitleCss,
 	template: DynamicPageTitleTemplate,
+	dependencies: [Title, Icon],
 })
 
 /**
@@ -110,6 +113,13 @@ class DynamicPageTitle extends UI5Element {
 	@property({ type: Number })
 	minActionsWidth?: number;
 
+	/**
+	 * Indicates whether the title has snapped on mobile devices.
+	 * @private
+	 */
+	@property({ type: Boolean })
+	hasSnappedTitleOnMobile = false;
+
 	/**
 	 * Defines the content of the Heading of the Dynamic Page.
 	 *
@@ -132,6 +142,22 @@ class DynamicPageTitle extends UI5Element {
 	@slot({ type: HTMLElement })
 	snappedHeading!: HTMLElement[];
 
+	/**
+	 * Defines the content of the snapped title on mobile devices.
+	 *
+	 * This slot is displayed only when the `DynamicPageTitle` is in the snapped state on mobile devices.
+	 * It should be used to provide a simplified, single-line title that takes up less space on smaller screens.
+	 *
+	 * **Note:**
+	 * - The content set in this slot **overrides** all other content set in the `DynamicPageTitle` slots when displayed.
+	 * - The slot is intended for a single `ui5-title` component.
+	 *
+	 * @public
+	 * @since 2.3.0
+	 */
+	@slot({ type: HTMLElement })
+	snappedTitleOnMobile!: Array<Title>;
+
 	/**
 	 * Defines the bar with actions in the Dynamic page title.
 	 *

packages/fiori/src/themes/DynamicPage.css

@@ -126,4 +126,11 @@
 
 :host([media-range="XL"]) ::slotted([slot="headerArea"]) {
     padding: var(--_ui5_dynamic_page_header_padding_XL);
+}
+
+/* snappedTitleOnMobile */
+:host([_header-snapped]) ::slotted([slot="headerArea"]) {
+	height: 0;
+	padding: 0;
+	visibility: hidden;
 }

packages/fiori/src/themes/DynamicPageTitle.css

@@ -35,6 +35,11 @@
     box-shadow: var(--sapContent_HeaderShadow);
 }
 
+:host([has-snapped-title-on-mobile]) {
+	min-height: var(--_ui5_dynamic_page_snapped_title_on_mobile_min_height);
+	line-height: var(--_ui5_dynamic_page_snapped_title_on_mobile_line_height);
+}
+
 /* breadcrumbs */
 ::slotted([ui5-breadcrumbs][slot="breadcrumbs"]) {
     padding: var(--_ui5_dynamic_page_title_breadcrumbs_padding_top) 0
@@ -88,6 +93,13 @@
     min-width: 1px;
 }
 
+.ui5-dynamic-page--snapped-title-on-mobile {
+	display: flex;
+	justify-content: space-between;
+	align-items: center;
+	pointer-events: none;
+}
+
 .ui5-dynamic-page-title--content {
     padding: 0 0 0 1rem;
     flex-shrink: 1.6;

packages/fiori/src/themes/base/DynamicPageTitle-parameters.css

@@ -16,4 +16,6 @@
 
     --_ui5_dynamic_page_title_hover_background: var(--sapObjectHeader_Hover_Background);
 
+	--_ui5_dynamic_page_snapped_title_on_mobile_line_height: 2rem;
+	--_ui5_dynamic_page_snapped_title_on_mobile_min_height: 2rem;
 }