Add new dashboard dialog (#18657)

* Add new dashboard dialog

* Update default dashboard wording

src/panels/config/dashboard/dialog-new-dashboard.ts

@@ -0,0 +1,143 @@
+import "@material/mwc-list/mwc-list";
+import { mdiPencilOutline, mdiShape } from "@mdi/js";
+import { CSSResultGroup, LitElement, css, html, nothing } from "lit";
+import { customElement, property, state } from "lit/decorators";
+import { fireEvent } from "../../../common/dom/fire_event";
+import { createCloseHeading } from "../../../components/ha-dialog";
+import "../../../components/ha-icon-next";
+import "../../../components/ha-list-item";
+import { HassDialog } from "../../../dialogs/make-dialog-manager";
+import { haStyle, haStyleDialog } from "../../../resources/styles";
+import type { HomeAssistant } from "../../../types";
+import { shouldHandleRequestSelectedEvent } from "../../../common/mwc/handle-request-selected-event";
+import { NewDashboardDialogParams } from "./show-dialog-new-dashboard";
+import { LovelaceRawConfig } from "../../../data/lovelace/config/types";
+
+const EMPTY_CONFIG: LovelaceRawConfig = { views: [{ title: "Home" }] };
+
+@customElement("ha-dialog-new-dashboard")
+class DialogNewDashboard extends LitElement implements HassDialog {
+  @property({ attribute: false }) public hass!: HomeAssistant;
+
+  @state() private _opened = false;
+
+  @state() private _params?: NewDashboardDialogParams;
+
+  public showDialog(params: NewDashboardDialogParams): void {
+    this._opened = true;
+    this._params = params;
+  }
+
+  public closeDialog(): void {
+    if (this._opened) {
+      fireEvent(this, "dialog-closed", { dialog: this.localName });
+    }
+    this._opened = false;
+    this._params = undefined;
+  }
+
+  protected render() {
+    if (!this._opened) {
+      return nothing;
+    }
+
+    return html`
+      <ha-dialog
+        open
+        hideActions
+        @closed=${this.closeDialog}
+        .heading=${createCloseHeading(
+          this.hass,
+          this.hass.localize(
+            `ui.panel.config.lovelace.dashboards.dialog_new.header`
+          )
+        )}
+      >
+        <mwc-list
+          innerRole="listbox"
+          itemRoles="option"
+          innerAriaLabel=${this.hass.localize(
+            `ui.panel.config.lovelace.dashboards.dialog_new.header`
+          )}
+          rootTabbable
+          dialogInitialFocus
+          @selected=${this._selected}
+        >
+          <ha-list-item
+            hasmeta
+            twoline
+            graphic="icon"
+            .config=${EMPTY_CONFIG}
+            @request-selected=${this._selected}
+          >
+            <ha-svg-icon slot="graphic" .path=${mdiPencilOutline}></ha-svg-icon>
+            ${this.hass.localize(
+              `ui.panel.config.lovelace.dashboards.dialog_new.create_empty`
+            )}
+            <span slot="secondary">
+              ${this.hass.localize(
+                `ui.panel.config.lovelace.dashboards.dialog_new.create_empty_description`
+              )}
+            </span>
+            <ha-icon-next slot="meta"></ha-icon-next>
+          </ha-list-item>
+          <li divider role="separator"></li>
+          <ha-list-item
+            hasmeta
+            twoline
+            graphic="icon"
+            .config=${null}
+            @request-selected=${this._selected}
+          >
+            <ha-svg-icon slot="graphic" .path=${mdiShape}></ha-svg-icon>
+            ${this.hass.localize(
+              `ui.panel.config.lovelace.dashboards.dialog_new.default`
+            )}
+            <span slot="secondary"
+              >${this.hass.localize(
+                `ui.panel.config.lovelace.dashboards.dialog_new.default_description`
+              )}</span
+            >
+            <ha-icon-next slot="meta"></ha-icon-next>
+          </ha-list-item>
+        </mwc-list>
+      </ha-dialog>
+    `;
+  }
+
+  private async _selected(ev) {
+    if (!shouldHandleRequestSelectedEvent(ev)) {
+      return;
+    }
+    const config = (ev.currentTarget! as any).config;
+    this._params?.selectConfig(config);
+    this.closeDialog();
+  }
+
+  static get styles(): CSSResultGroup {
+    return [
+      haStyle,
+      haStyleDialog,
+      css`
+        ha-dialog {
+          --dialog-content-padding: 0;
+          --mdc-dialog-max-height: 60vh;
+        }
+        @media all and (min-width: 550px) {
+          ha-dialog {
+            --mdc-dialog-min-width: 500px;
+          }
+        }
+        ha-icon-next {
+          width: 24px;
+        }
+      `,
+    ];
+  }
+}
+
+declare global {
+  interface HTMLElementTagNameMap {
+    "ha-dialog-new-dashboard": DialogNewDashboard;
+  }
+}

src/panels/config/dashboard/show-dialog-new-dashboard.ts

@@ -0,0 +1,19 @@
+import { fireEvent } from "../../../common/dom/fire_event";
+import { LovelaceConfig } from "../../../data/lovelace/config/types";
+
+export interface NewDashboardDialogParams {
+  selectConfig: (config: LovelaceConfig | undefined) => any;
+}
+
+export const loadNewDashboardDialog = () => import("./dialog-new-dashboard");
+
+export const showNewDashboardDialog = (
+  element: HTMLElement,
+  newDashboardDialogParams: NewDashboardDialogParams
+): void => {
+  fireEvent(element, "show-dialog", {
+    dialogTag: "ha-dialog-new-dashboard",
+    dialogImport: loadNewDashboardDialog,
+    dialogParams: newDashboardDialogParams,
+  });
+};

src/panels/config/lovelace/dashboards/ha-config-lovelace-dashboards.ts

@@ -1,3 +1,4 @@
+import "@lrnwebcomponents/simple-tooltip/simple-tooltip";
 import {
   mdiCheck,
   mdiCheckCircleOutline,
@@ -5,8 +6,7 @@ import {
   mdiOpenInNew,
   mdiPlus,
 } from "@mdi/js";
-import "@lrnwebcomponents/simple-tooltip/simple-tooltip";
-import { html, LitElement, nothing, PropertyValues } from "lit";
+import { LitElement, PropertyValues, html, nothing } from "lit";
 import { customElement, property, state } from "lit/decorators";
 import { ifDefined } from "lit/directives/if-defined";
 import memoize from "memoize-one";
@@ -22,21 +22,26 @@ import "../../../../components/ha-fab";
 import "../../../../components/ha-icon";
 import "../../../../components/ha-icon-button";
 import "../../../../components/ha-svg-icon";
+import { LovelacePanelConfig } from "../../../../data/lovelace";
 import {
+  LovelaceConfig,
+  saveConfig,
+} from "../../../../data/lovelace/config/types";
+import {
+  LovelaceDashboard,
+  LovelaceDashboardCreateParams,
   createDashboard,
   deleteDashboard,
   fetchDashboards,
-  LovelaceDashboard,
-  LovelaceDashboardCreateParams,
   updateDashboard,
 } from "../../../../data/lovelace/dashboard";
 import { showConfirmationDialog } from "../../../../dialogs/generic/show-dialog-box";
 import "../../../../layouts/hass-loading-screen";
 import "../../../../layouts/hass-tabs-subpage-data-table";
 import { HomeAssistant, Route } from "../../../../types";
+import { showNewDashboardDialog } from "../../dashboard/show-dialog-new-dashboard";
 import { lovelaceTabs } from "../ha-config-lovelace";
 import { showDashboardDetailDialog } from "./show-dialog-lovelace-dashboard-detail";
-import { LovelacePanelConfig } from "../../../../data/lovelace";
 
 type DataTableItem = Pick<
   LovelaceDashboard,
@@ -329,16 +334,21 @@ export class HaConfigLovelaceDashboards extends LitElement {
       return;
     }
     const dashboard = this._dashboards.find((res) => res.url_path === urlPath);
-    this._openDialog(dashboard, urlPath);
+    this._openDetailDialog(dashboard, urlPath);
   }
 
-  private _addDashboard() {
-    this._openDialog();
+  private async _addDashboard() {
+    showNewDashboardDialog(this, {
+      selectConfig: (config) => {
+        this._openDetailDialog(undefined, undefined, config);
+      },
+    });
   }
 
-  private async _openDialog(
+  private async _openDetailDialog(
     dashboard?: LovelaceDashboard,
-    urlPath?: string
+    urlPath?: string,
+    defaultConfig?: LovelaceConfig
   ): Promise<void> {
     showDashboardDetailDialog(this, {
       dashboard,
@@ -353,6 +363,9 @@ export class HaConfigLovelaceDashboards extends LitElement {
               this.hass.locale.language
             )
         );
+        if (defaultConfig) {
+          await saveConfig(this.hass!, created.url_path, defaultConfig);
+        }
       },
       updateDashboard: async (values) => {
         const updated = await updateDashboard(

src/translations/en.json

@@ -2100,6 +2100,13 @@
               "yaml": "YAML file",
               "storage": "UI controlled"
             },
+            "dialog_new": {
+              "header": "Add dashboard",
+              "create_empty": "New dashboard from scratch",
+              "create_empty_description": "Start with an empty dashboard from scratch",
+              "default": "Default dashboard",
+              "default_description": "Display your devices grouped by area"
+            },
             "picker": {
               "headers": {
                 "icon": "Icon",