Add card functionality

src/common/util/uid.ts

@@ -0,0 +1,9 @@
+function s4() {
+  return Math.floor((1 + Math.random()) * 0x10000)
+    .toString(16)
+    .substring(1);
+}
+
+export default function uid() {
+  return s4() + s4() + s4() + s4() + s4();
+}

src/data/lovelace.ts

@@ -33,12 +33,12 @@ export const migrateConfig = (hass: HomeAssistant): Promise<void> =>
 export const saveConfig = (
   hass: HomeAssistant,
   config: LovelaceConfig | string,
-  configFormat: "json" | "yaml"
+  format: "json" | "yaml"
 ): Promise<void> =>
   hass.callWS({
     type: "lovelace/config/save",
     config,
-    format: configFormat,
+    format,
   });
 
 export const getCardConfig = (
@@ -54,13 +54,13 @@ export const updateCardConfig = (
   hass: HomeAssistant,
   cardId: string,
   config: LovelaceCardConfig | string,
-  configFormat: "json" | "yaml"
+  format: "json" | "yaml"
 ): Promise<void> =>
   hass.callWS({
     type: "lovelace/config/card/update",
     card_id: cardId,
     card_config: config,
-    format: configFormat,
+    format,
   });
 
 export const deleteCard = (
@@ -71,3 +71,16 @@ export const deleteCard = (
     type: "lovelace/config/card/delete",
     card_id: cardId,
   });
+
+export const addCard = (
+  hass: HomeAssistant,
+  viewId: string,
+  config: LovelaceCardConfig | string,
+  format: "json" | "yaml"
+): Promise<void> =>
+  hass.callWS({
+    type: "lovelace/config/card/add",
+    view_id: viewId,
+    card_config: config,
+    format,
+  });

src/panels/lovelace/cards/hui-entities-card.ts

@@ -43,6 +43,11 @@ class HuiEntitiesCard extends hassLocalizeLitMixin(LitElement)
     await import("../editor/config-elements/hui-entities-card-editor");
     return document.createElement("hui-entities-card-editor");
   }
+
+  public static getStubConfig(hass: HomeAssistant): LovelaceCardConfig {
+    return { type: "entities", entities: [] };
+  }
+
   protected _hass?: HomeAssistant;
   protected _config?: Config;
   protected _configEntities?: ConfigEntity[];

src/panels/lovelace/cards/hui-glance-card.ts

@@ -47,6 +47,9 @@ export class HuiGlanceCard extends hassLocalizeLitMixin(LitElement)
     await import("../editor/config-elements/hui-glance-card-editor");
     return document.createElement("hui-glance-card-editor");
   }
+  public static getStubConfig(hass: HomeAssistant): LovelaceCardConfig {
+    return { type: "glance", entities: [] };
+  }
 
   public hass?: HomeAssistant;
   private _config?: Config;

src/panels/lovelace/common/get-element-tag.ts

@@ -0,0 +1,7 @@
+const CUSTOM_TYPE_PREFIX = "custom:";
+
+export function getElementTag(type: string): string {
+  return type.startsWith(CUSTOM_TYPE_PREFIX)
+    ? type.substr(CUSTOM_TYPE_PREFIX.length)
+    : `hui-${type}-card`;
+}

src/panels/lovelace/components/hui-card-options.ts

@@ -1,10 +1,7 @@
-import "@polymer/paper-button/paper-button";
 import { html, LitElement, PropertyDeclarations } from "@polymer/lit-element";
+import "@polymer/paper-button/paper-button";
 import { fireEvent } from "../../../common/dom/fire_event";
-import {
-  showEditCardDialog,
-  registerEditCardDialog,
-} from "../editor/hui-dialog-edit-card";
+import { showEditCardDialog } from "../editor/hui-dialog-edit-card";
 
 import { confDeleteCard } from "../editor/delete-card";
 import { HomeAssistant } from "../../../types";
@@ -14,14 +11,13 @@ declare global {
   // for fire event
   interface HASSDomEvents {
     "show-edit-card": {
-      cardConfig: LovelaceCardConfig;
+      cardConfig?: LovelaceCardConfig;
+      viewId?: string | number;
       reloadLovelace: () => void;
     };
   }
 }
 
-let registeredDialog = false;
-
 export class HuiCardOptions extends LitElement {
   public cardConfig?: LovelaceCardConfig;
   protected hass?: HomeAssistant;
@@ -30,14 +26,6 @@ export class HuiCardOptions extends LitElement {
     return { hass: {} };
   }
 
-  public connectedCallback() {
-    super.connectedCallback();
-    if (!registeredDialog) {
-      registeredDialog = true;
-      registerEditCardDialog(this);
-    }
-  }
-
   protected render() {
     return html`
       <style>

src/panels/lovelace/editor/config-elements/hui-entities-card-editor.ts

@@ -42,10 +42,6 @@ const cardConfigStruct = struct({
 
 export class HuiEntitiesCardEditor extends hassLocalizeLitMixin(LitElement)
   implements LovelaceCardEditor {
-  public hass?: HomeAssistant;
-  private _config?: Config;
-  private _configEntities?: ConfigEntity[];
-
   static get properties(): PropertyDeclarations {
     return { hass: {}, _config: {}, _configEntities: {} };
   }
@@ -58,6 +54,10 @@ export class HuiEntitiesCardEditor extends hassLocalizeLitMixin(LitElement)
     return this._config!.theme || "Backend-selected";
   }
 
+  public hass?: HomeAssistant;
+  private _config?: Config;
+  private _configEntities?: ConfigEntity[];
+
   public setConfig(config: Config): void {
     config = cardConfigStruct(config);
 

src/panels/lovelace/editor/hui-card-picker.ts

@@ -0,0 +1,102 @@
+import { html, LitElement } from "@polymer/lit-element";
+import { TemplateResult } from "lit-html";
+import "@polymer/paper-button/paper-button";
+
+import { HomeAssistant } from "../../../types";
+import { fireEvent } from "../../../common/dom/fire_event";
+import { LovelaceCardConfig } from "../../../data/lovelace";
+import { getElementTag } from "../common/get-element-tag";
+import { CardPickTarget } from "./types";
+import uid from "../../../common/util/uid";
+
+const cards = [
+  { name: "Alarm panel", type: "alarm-panel" },
+  { name: "Conditional", type: "conditional" },
+  { name: "Entities", type: "entities" },
+  { name: "Entity Button", type: "entity-button" },
+  { name: "Entity Filter", type: "entity-filter" },
+  { name: "Gauge", type: "gauge" },
+  { name: "Glance", type: "glance" },
+  { name: "History Graph", type: "history-graph" },
+  { name: "Horizontal Stack", type: "horizontal-graph" },
+  { name: "iFrame", type: "iframe" },
+  { name: "Light", type: "light" },
+  { name: "Map", type: "map" },
+  { name: "Markdown", type: "markdown" },
+  { name: "Media Control", type: "media-control" },
+  { name: "Picture", type: "picture" },
+  { name: "Picture Elements", type: "picture-elements" },
+  { name: "Picture Entity", type: "picture-entity" },
+  { name: "Picture Glance", type: "picture-glance" },
+  { name: "Plant Status", type: "plant-status" },
+  { name: "Sensor", type: "sensor" },
+  { name: "Shopping List", type: "shopping-list" },
+  { name: "Thermostat", type: "thermostat" },
+  { name: "Vertical Stack", type: "vertical-stack" },
+  { name: "Weather Forecast", type: "weather-forecast" },
+];
+
+export class HuiCardPicker extends LitElement {
+  protected hass?: HomeAssistant;
+
+  protected render(): TemplateResult {
+    return html`
+      ${this.renderStyle()}
+      <h3>Pick the card you want to add:</h3>
+      <div class="cards-container">
+        ${
+          cards.map((card) => {
+            return html`
+              <paper-button
+                raised
+                @click="${this._cardPicked}"
+                .type="${card.type}"
+                >${card.name}</paper-button
+              >
+            `;
+          })
+        }
+      </div>
+    `;
+  }
+
+  private renderStyle(): TemplateResult {
+    return html`
+      <style>
+        .cards-container {
+          display: flex;
+          flex-wrap: wrap;
+          margin-bottom: 10px;
+        }
+        .cards-container paper-button {
+          flex: 1 0 25%;
+        }
+      </style>
+    `;
+  }
+
+  private _cardPicked(ev: Event): void {
+    const type = (ev.currentTarget! as CardPickTarget).type;
+    const tag = getElementTag(type);
+
+    const elClass = customElements.get(tag);
+    let config: LovelaceCardConfig = { type, id: uid() };
+
+    try {
+      const cardConfig = elClass.getStubConfig(this.hass);
+      config = { ...config, ...cardConfig };
+    } finally {
+      fireEvent(this, "card-picked", {
+        config,
+      });
+    }
+  }
+}
+
+declare global {
+  interface HTMLElementTagNameMap {
+    "hui-card-picker": HuiCardPicker;
+  }
+}
+
+customElements.define("hui-card-picker", HuiCardPicker);

src/panels/lovelace/editor/hui-card-preview.ts

@@ -6,8 +6,7 @@ import { HomeAssistant } from "../../../types";
 import { LovelaceCardConfig } from "../../../data/lovelace";
 import { LovelaceCard } from "../types";
 import { ConfigError } from "./types";
-
-const CUSTOM_TYPE_PREFIX = "custom:";
+import { getElementTag } from "../common/get-element-tag";
 
 export class HuiCardPreview extends HTMLElement {
   private _hass?: HomeAssistant;
@@ -39,9 +38,7 @@ export class HuiCardPreview extends HTMLElement {
       return;
     }
 
-    const tag = configValue.type.startsWith(CUSTOM_TYPE_PREFIX)
-      ? configValue.type.substr(CUSTOM_TYPE_PREFIX.length)
-      : `hui-${configValue.type}-card`;
+    const tag = getElementTag(configValue.type);
 
     if (tag.toUpperCase() === this._element.tagName) {
       this._element.setConfig(configValue);

src/panels/lovelace/editor/hui-dialog-edit-card.ts

@@ -23,7 +23,8 @@ const dialogShowEvent = "show-edit-card";
 const dialogTag = "hui-dialog-edit-card";
 
 export interface EditCardDialogParams {
-  cardConfig: LovelaceCardConfig;
+  cardConfig?: LovelaceCardConfig;
+  viewId?: string | number;
   reloadLovelace: () => void;
 }
 
@@ -60,7 +61,10 @@ export class HuiDialogEditCard extends LitElement {
     if (!this._params) {
       return html``;
     }
-    if (!this._params.cardConfig.id) {
+    if (
+      (this._params.cardConfig && !this._params.cardConfig.id) ||
+      (!this._params.cardConfig && !this._params.viewId)
+    ) {
       return html`
         <hui-migrate-config
           .hass="${this.hass}"
@@ -70,6 +74,7 @@ export class HuiDialogEditCard extends LitElement {
     }
     return html`
       <hui-edit-card
+        .viewId="${this._params.viewId}"
         .cardConfig="${this._params.cardConfig}"
         .hass="${this.hass}"
         @reload-lovelace="${this._params.reloadLovelace}"