Add home assistant bottom sheet (#26948)

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

Author: piitaya

src/components/ha-bottom-sheet.ts

@@ -1,262 +1,62 @@
-import { css, html, LitElement } from "lit";
-import { customElement, query, state } from "lit/decorators";
-import { styleMap } from "lit/directives/style-map";
-import { fireEvent } from "../common/dom/fire_event";
+import { css, html, LitElement, type PropertyValues } from "lit";
+import "@home-assistant/webawesome/dist/components/drawer/drawer";
+import { customElement, property, state } from "lit/decorators";
 
-const ANIMATION_DURATION_MS = 300;
+export const BOTTOM_SHEET_ANIMATION_DURATION_MS = 300;
 
-/**
- * A bottom sheet component that slides up from the bottom of the screen.
- *
- * The bottom sheet provides a draggable interface that allows users to resize
- * the sheet by dragging the handle at the top. It supports both mouse and touch
- * interactions and automatically closes when dragged below a 20% of screen height.
- *
- * @fires bottom-sheet-closed - Fired when the bottom sheet is closed
- *
- * @cssprop --ha-bottom-sheet-border-width - Border width for the sheet
- * @cssprop --ha-bottom-sheet-border-style - Border style for the sheet
- * @cssprop --ha-bottom-sheet-border-color - Border color for the sheet
- */
 @customElement("ha-bottom-sheet")
 export class HaBottomSheet extends LitElement {
-  @query("dialog") private _dialog!: HTMLDialogElement;
+  @property({ type: Boolean }) public open = false;
 
-  private _dragging = false;
+  @state() private _drawerOpen = false;
 
-  private _dragStartY = 0;
-
-  private _initialSize = 0;
-
-  @state() private _dialogMaxViewpointHeight = 70;
-
-  @state() private _dialogMinViewpointHeight = 55;
-
-  @state() private _dialogViewportHeight?: number;
-
-  render() {
-    return html`<dialog
-      open
-      @transitionend=${this._handleTransitionEnd}
-      style=${styleMap({
-        height: this._dialogViewportHeight
-          ? `${this._dialogViewportHeight}vh`
-          : "auto",
-        maxHeight: `${this._dialogMaxViewpointHeight}vh`,
-        minHeight: `${this._dialogMinViewpointHeight}vh`,
-      })}
-    >
-      <div class="handle-wrapper">
-        <div
-          @mousedown=${this._handleMouseDown}
-          @touchstart=${this._handleTouchStart}
-          class="handle"
-        ></div>
-      </div>
-      <slot></slot>
-    </dialog>`;
-  }
-
-  protected firstUpdated(changedProperties) {
-    super.firstUpdated(changedProperties);
-    this._openSheet();
-  }
-
-  private _openSheet() {
-    requestAnimationFrame(() => {
-      // trigger opening animation
-      this._dialog.classList.add("show");
-    });
-  }
-
-  public closeSheet() {
-    requestAnimationFrame(() => {
-      this._dialog.classList.remove("show");
-    });
-  }
-
-  private _handleTransitionEnd() {
-    if (this._dialog.classList.contains("show")) {
-      // after show animation is done
-      // - set the height to the natural height, to prevent content shift when switch content
-      // - set max height to 90vh, so it opens at max 70vh but can be resized to 90vh
-      this._dialogViewportHeight =
-        (this._dialog.offsetHeight / window.innerHeight) * 100;
-      this._dialogMaxViewpointHeight = 90;
-      this._dialogMinViewpointHeight = 20;
-    } else {
-      // after close animation is done close dialog element and fire closed event
-      this._dialog.close();
-      fireEvent(this, "bottom-sheet-closed");
-    }
-  }
-
-  connectedCallback() {
-    super.connectedCallback();
-
-    // register event listeners for drag handling
-    document.addEventListener("mousemove", this._handleMouseMove);
-    document.addEventListener("mouseup", this._handleMouseUp);
-    document.addEventListener("touchmove", this._handleTouchMove, {
-      passive: false,
+  private _handleAfterHide() {
+    this.open = false;
+    const ev = new Event("closed", {
+      bubbles: true,
+      composed: true,
     });
-    document.addEventListener("touchend", this._handleTouchEnd);
-    document.addEventListener("touchcancel", this._handleTouchEnd);
-  }
-
-  disconnectedCallback() {
-    super.disconnectedCallback();
-
-    // unregister event listeners for drag handling
-    document.removeEventListener("mousemove", this._handleMouseMove);
-    document.removeEventListener("mouseup", this._handleMouseUp);
-    document.removeEventListener("touchmove", this._handleTouchMove);
-    document.removeEventListener("touchend", this._handleTouchEnd);
-    document.removeEventListener("touchcancel", this._handleTouchEnd);
-  }
-
-  private _handleMouseDown = (ev: MouseEvent) => {
-    this._startDrag(ev.clientY);
-  };
-
-  private _handleTouchStart = (ev: TouchEvent) => {
-    // Prevent the browser from interpreting this as a scroll/PTR gesture.
-    ev.preventDefault();
-    this._startDrag(ev.touches[0].clientY);
-  };
-
-  private _startDrag(clientY: number) {
-    this._dragging = true;
-    this._dragStartY = clientY;
-    this._initialSize = (this._dialog.offsetHeight / window.innerHeight) * 100;
-    document.body.style.setProperty("cursor", "grabbing");
+    this.dispatchEvent(ev);
   }
 
-  private _handleMouseMove = (ev: MouseEvent) => {
-    if (!this._dragging) {
-      return;
-    }
-    this._updateSize(ev.clientY);
-  };
-
-  private _handleTouchMove = (ev: TouchEvent) => {
-    if (!this._dragging) {
-      return;
-    }
-    ev.preventDefault(); // Prevent scrolling
-    this._updateSize(ev.touches[0].clientY);
-  };
-
-  private _updateSize(clientY: number) {
-    const deltaY = this._dragStartY - clientY;
-    const viewportHeight = window.innerHeight;
-    const deltaVh = (deltaY / viewportHeight) * 100;
-
-    // Calculate new size and clamp between 10vh and 90vh
-    let newSize = this._initialSize + deltaVh;
-    newSize = Math.max(10, Math.min(90, newSize));
-
-    // on drag down and below 20vh
-    if (newSize < 20 && deltaY < 0) {
-      this._endDrag();
-      this.closeSheet();
-      return;
+  protected updated(changedProperties: PropertyValues): void {
+    super.updated(changedProperties);
+    if (changedProperties.has("open")) {
+      this._drawerOpen = this.open;
     }
-
-    this._dialogViewportHeight = newSize;
   }
 
-  private _handleMouseUp = () => {
-    this._endDrag();
-  };
-
-  private _handleTouchEnd = () => {
-    this._endDrag();
-  };
-
-  private _endDrag() {
-    if (!this._dragging) {
-      return;
-    }
-    this._dragging = false;
-    document.body.style.removeProperty("cursor");
+  render() {
+    return html`
+      <wa-drawer
+        placement="bottom"
+        .open=${this._drawerOpen}
+        @wa-after-hide=${this._handleAfterHide}
+        without-header
+      >
+        <slot></slot>
+      </wa-drawer>
+    `;
   }
 
   static styles = css`
-    .handle-wrapper {
-      position: absolute;
-      top: 0;
-      width: 100%;
-      padding-bottom: 2px;
-      display: flex;
-      justify-content: center;
-      align-items: center;
-      cursor: grab;
-      touch-action: none;
-    }
-    .handle-wrapper .handle {
-      height: 20px;
-      width: 200px;
-      display: flex;
-      justify-content: center;
-      align-items: center;
-      z-index: 7;
-      padding-bottom: 76px;
-    }
-    .handle-wrapper .handle::after {
-      content: "";
-      border-radius: 8px;
-      height: 4px;
-      background: var(--divider-color, #e0e0e0);
-      width: 80px;
-    }
-    .handle-wrapper .handle:active::after {
-      cursor: grabbing;
-    }
-    dialog {
-      height: auto;
-      max-height: 70vh;
-      min-height: 30vh;
-      background-color: var(
+    wa-drawer {
+      --wa-color-surface-raised: var(
         --ha-dialog-surface-background,
         var(--mdc-theme-surface, #fff)
       );
-      display: flex;
-      flex-direction: column;
-      top: 0;
-      inset-inline-start: 0;
-      position: fixed;
-      width: calc(100% - 4px);
-      max-width: 100%;
-      border: none;
-      box-shadow: var(--wa-shadow-l);
-      padding: 0;
-      margin: 0;
-      top: auto;
-      inset-inline-end: auto;
-      bottom: 0;
-      inset-inline-start: 0;
-      box-shadow: 0px -8px 16px rgba(0, 0, 0, 0.2);
-      border-top-left-radius: var(
-        --ha-dialog-border-radius,
-        var(--ha-border-radius-2xl)
-      );
-      border-top-right-radius: var(
-        --ha-dialog-border-radius,
-        var(--ha-border-radius-2xl)
-      );
-      transform: translateY(100%);
-      transition: transform ${ANIMATION_DURATION_MS}ms ease;
-      border-top-width: var(--ha-bottom-sheet-border-width);
-      border-right-width: var(--ha-bottom-sheet-border-width);
-      border-left-width: var(--ha-bottom-sheet-border-width);
-      border-bottom-width: 0;
-      border-style: var(--ha-bottom-sheet-border-style);
-      border-color: var(--ha-bottom-sheet-border-color);
+      --spacing: 0;
+      --size: auto;
+      --show-duration: ${BOTTOM_SHEET_ANIMATION_DURATION_MS}ms;
+      --hide-duration: ${BOTTOM_SHEET_ANIMATION_DURATION_MS}ms;
     }
-
-    dialog.show {
-      transform: translateY(0);
+    wa-drawer::part(dialog) {
+      border-top-left-radius: var(--ha-border-radius-lg);
+      border-top-right-radius: var(--ha-border-radius-lg);
+      max-height: 90vh;
+    }
+    wa-drawer::part(body) {
+      padding-bottom: var(--safe-area-inset-bottom);
     }
   `;
 }
@@ -265,8 +65,4 @@ declare global {
   interface HTMLElementTagNameMap {
     "ha-bottom-sheet": HaBottomSheet;
   }
-
-  interface HASSDomEvents {
-    "bottom-sheet-closed": undefined;
-  }
 }