Arrayify actions list

Bumps [ini](https://github.com/isaacs/ini) from 1.3.5 to 1.3.7.
- [Release notes](https://github.com/isaacs/ini/releases)
- [Commits](https://github.com/isaacs/ini/compare/v1.3.5...v1.3.7)

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.devcontainer/Dockerfile

@@ -0,0 +1,13 @@
+# See here for image contents: https://github.com/microsoft/vscode-dev-containers/tree/v0.148.1/containers/python-3/.devcontainer/base.Dockerfile
+FROM mcr.microsoft.com/vscode/devcontainers/python:0-3.9
+
+ENV \
+  DEBIAN_FRONTEND=noninteractive \
+  DEVCONTAINER=true \
+  PATH=$PATH:./node_modules/.bin
+
+# Install nvm
+COPY .nvmrc /tmp/.nvmrc
+RUN \
+  su vscode -c \
+    "source /usr/local/share/nvm/nvm.sh && nvm install $(cat /tmp/.nvmrc) 2>&1"

.devcontainer/devcontainer.json

@@ -0,0 +1,31 @@
+{
+  "name": "Home Assistant Frontend",
+  "build": {
+    "dockerfile": "Dockerfile",
+    "context": ".."
+  },
+  "appPort": 8123,
+  "context": "..",
+  "postCreateCommand": "script/bootstrap",
+  "extensions": [
+    "github.vscode-pull-request-github",
+    "dbaeumer.vscode-eslint",
+    "ms-vscode.vscode-typescript-tslint-plugin",
+    "esbenp.prettier-vscode",
+    "bierner.lit-html",
+    "runem.lit-plugin",
+    "ms-python.vscode-pylance"
+  ],
+  "settings": {
+    "terminal.integrated.shell.linux": "/bin/bash",
+    "files.eol": "\n",
+    "editor.tabSize": 2,
+    "editor.formatOnPaste": false,
+    "editor.formatOnSave": true,
+    "editor.formatOnType": true,
+    "[typescript]": {
+      "editor.defaultFormatter": "esbenp.prettier-vscode"
+    },
+    "files.trimTrailingWhitespace": true
+  }
+}

.eslintrc.json

@@ -75,13 +75,16 @@
     "object-curly-newline": 0,
     "default-case": 0,
     "wc/no-self-class": 0,
+    "no-shadow": 0,
     "@typescript-eslint/camelcase": 0,
-    "@typescript-eslint/ban-ts-ignore": 0,
+    "@typescript-eslint/ban-ts-comment": 0,
     "@typescript-eslint/no-use-before-define": 0,
     "@typescript-eslint/no-non-null-assertion": 0,
     "@typescript-eslint/no-explicit-any": 0,
     "@typescript-eslint/no-unused-vars": 0,
-    "@typescript-eslint/explicit-function-return-type": 0
+    "@typescript-eslint/explicit-function-return-type": 0,
+    "@typescript-eslint/explicit-module-boundary-types": 0,
+    "@typescript-eslint/no-shadow": ["error"]
   },
   "plugins": ["disable", "import", "lit", "prettier", "@typescript-eslint"],
   "processor": "disable/disable"

.github/ISSUE_TEMPLATE/BUG_REPORT.md

@@ -74,12 +74,12 @@ DO NOT DELETE ANY TEXT from this template! Otherwise, your issue may be closed w
 
 ```
 
-## Problem-relevant configuration
+## Problem-relevant frontend configuration
 
 <!--
-  An example configuration that caused the problem for you. Fill this out even
-  if it seems unimportant to you. Please be sure to remove personal information
-  like passwords, private URLs and other credentials.
+  An example configuration that caused the problem for you, e.g. the YAML configuration 
+  of the used cards. Fill this out even if it seems unimportant to you. Please be sure 
+  to remove personal information like passwords, private URLs and other credentials.
 -->
 
 ```yaml
@@ -89,7 +89,7 @@ DO NOT DELETE ANY TEXT from this template! Otherwise, your issue may be closed w
 ## Javascript errors shown in your browser console/inspector
 
 <!--
-  If you come across any javascript or other error logs, e.g., in your browser
+  If you come across any Javascript or other error logs, e.g. in your browser
   console/inspector please provide them.
 -->
 

.github/ISSUE_TEMPLATE/FEATURE_REQUEST.md

@@ -1,26 +0,0 @@
----
-name: Request a feature for the UI, Frontend or Lovelace
-about: Request an new feature for the Home Assistant frontend.
-labels: feature request
----
-
-<!--
-  DO NOT DELETE ANY TEXT from this template!
-  Otherwise, your request may be closed without comment.
--->
-
-## The request
-
-<!--
-  Describe to our maintainers, the feature you would like to be added.
-  Please be clear and concise and, if possible, provide a screenshot or mockup.
--->
-
-## The alternatives
-
-<!--
-  Are you currently using, or have you considered alternatives?
-  If so, could you please describe those?
--->
-
-## Additional information

.github/ISSUE_TEMPLATE/config.yml

@@ -1,5 +1,8 @@
 blank_issues_enabled: false
 contact_links:
+  - name: Request a feature for the UI, Frontend or Lovelace
+    url: https://github.com/home-assistant/frontend/discussions/category_choices
+    about: Request an new feature for the Home Assistant frontend.
   - name: Report a bug that is NOT related to the UI, Frontend or Lovelace
     url: https://github.com/home-assistant/core/issues
     about: This is the issue tracker for our frontend. Please report other issues with the backend repository.

.github/PULL_REQUEST_TEMPLATE.md

@@ -18,8 +18,8 @@
 <!--
   Describe the big picture of your changes here to communicate to the
   maintainers why we should accept this pull request. If it fixes a bug
-  or resolves a feature request, be sure to link to that issue in the
-  additional information section.
+  or resolves a feature request, be sure to link to that issue or discussion
+  in the additional information section.
 -->
 
 ## Type of change
@@ -56,7 +56,7 @@
 -->
 
 - This PR fixes or closes issue: fixes #
-- This PR is related to issue:
+- This PR is related to issue or discussion:
 - Link to documentation pull request:
 
 ## Checklist

.github/lock.yml

@@ -1,27 +0,0 @@
-# Configuration for Lock Threads - https://github.com/dessant/lock-threads
-
-# Number of days of inactivity before a closed issue or pull request is locked
-daysUntilLock: 1
-
-# Skip issues and pull requests created before a given timestamp. Timestamp must
-# follow ISO 8601 (`YYYY-MM-DD`). Set to `false` to disable
-skipCreatedBefore: 2020-01-01
-
-# Issues and pull requests with these labels will be ignored. Set to `[]` to disable
-exemptLabels: []
-
-# Label to add before locking, such as `outdated`. Set to `false` to disable
-lockLabel: false
-
-# Comment to post before locking. Set to `false` to disable
-lockComment: false
-
-# Assign `resolved` as the reason for locking. Set to `false` to disable
-setLockReason: false
-
-# Limit to only `issues` or `pulls`
-only: pulls
-
-# Optionally, specify configuration settings just for `issues` or `pulls`
-issues:
-  daysUntilLock: 30

.github/stale.yml

@@ -1,56 +0,0 @@
-# Configuration for probot-stale - https://github.com/probot/stale
-
-# Number of days of inactivity before an Issue or Pull Request becomes stale
-daysUntilStale: 90
-
-# Number of days of inactivity before an Issue or Pull Request with the stale label is closed.
-# Set to false to disable. If disabled, issues still need to be closed manually, but will remain marked as stale.
-daysUntilClose: 7
-
-# Only issues or pull requests with all of these labels are check if stale. Defaults to `[]` (disabled)
-onlyLabels: []
-
-# Issues or Pull Requests with these labels will never be considered stale. Set to `[]` to disable
-exemptLabels:
-  - feature request
-  - Help wanted
-  - to do
-
-# Set to true to ignore issues in a project (defaults to false)
-exemptProjects: true
-
-# Set to true to ignore issues in a milestone (defaults to false)
-exemptMilestones: true
-
-# Set to true to ignore issues with an assignee (defaults to false)
-exemptAssignees: false
-
-# Label to use when marking as stale
-staleLabel: stale
-
-# Comment to post when marking as stale. Set to `false` to disable
-markComment: >
-  There hasn't been any activity on this issue recently. Due to the high number
-  of incoming GitHub notifications, we have to clean some of the old issues,
-  as many of them have already been resolved with the latest updates.
-
-  Please make sure to update to the latest Home Assistant version and check
-  if that solves the issue. Let us know if that works for you by adding a
-  comment 👍
-
-  This issue now has been marked as stale and will be closed if no further
-  activity occurs. Thank you for your contributions.
-
-# Comment to post when removing the stale label.
-# unmarkComment: >
-#   Your comment here.
-
-# Comment to post when closing a stale Issue or Pull Request.
-# closeComment: >
-#   Your comment here.
-
-# Limit the number of actions per hour, from 1-30. Default is 30
-limitPerRun: 30
-
-# Limit to only `issues` or `pulls`
-only: issues

.github/workflows/lock.yml

@@ -0,0 +1,20 @@
+name: Lock
+
+# yamllint disable-line rule:truthy
+on:
+  schedule:
+    - cron: "0 * * * *"
+
+jobs:
+  lock:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: dessant/[email protected]
+        with:
+          github-token: ${{ github.token }}
+          issue-lock-inactive-days: "30"
+          issue-exclude-created-before: "2020-10-01T00:00:00Z"
+          issue-lock-reason: ""
+          pr-lock-inactive-days: "1"
+          pr-exclude-created-before: "2020-11-01T00:00:00Z"
+          pr-lock-reason: ""

.github/workflows/stale.yml

@@ -0,0 +1,42 @@
+name: Stale
+
+# yamllint disable-line rule:truthy
+on:
+  schedule:
+    - cron: "0 * * * *"
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - name: 90 days stale policy
+        uses: actions/[email protected]
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          days-before-stale: 90
+          days-before-close: 7
+          operations-per-run: 25
+          remove-stale-when-updated: true
+          stale-issue-label: "stale"
+          exempt-issue-labels: "no-stale,Help%20wanted,help-wanted,feature-request,feature%20request"
+          stale-issue-message: >
+            There hasn't been any activity on this issue recently. Due to the
+            high number of incoming GitHub notifications, we have to clean some
+            of the old issues, as many of them have already been resolved with
+            the latest updates.
+
+            Please make sure to update to the latest Home Assistant version and
+            check if that solves the issue. Let us know if that works for you by
+            adding a comment 👍
+
+            This issue has now been marked as stale and will be closed if no
+            further activity occurs. Thank you for your contributions.
+
+          stale-pr-label: "stale"
+          exempt-pr-labels: "no-stale"
+          stale-pr-message: >
+            There hasn't been any activity on this pull request recently. This
+            pull request has been automatically marked as stale because of that
+            and will be closed if no further activity occurs within 7 days.
+
+            Thank you for your contributions.

.gitignore

@@ -23,6 +23,8 @@ dist
 # vscode
 .vscode/*
 !.vscode/extensions.json
+!.vscode/launch.json
+!.vscode/tasks.json
 
 # Cast dev settings
 src/cast/dev_const.ts
@@ -33,3 +35,6 @@ yarn-error.log
 
 #asdf
 .tool-versions
+
+# Home Assistant config
+/config

.hound.yml

@@ -1,6 +0,0 @@
-jshint:
-  enabled: false
-
-eslint:
-  enabled: true
-  config_file: .eslintrc-hound.json

.vscode/launch.json

@@ -0,0 +1,44 @@
+{
+  // https://github.com/microsoft/vscode-js-debug/blob/master/OPTIONS.md
+  "configurations": [
+    {
+      "name": "Debug Frontend",
+      "request": "launch",
+      "type": "pwa-chrome",
+      "url": "http://localhost:8123/",
+      "webRoot": "${workspaceFolder}/hass_frontend",
+      "disableNetworkCache": true,
+      "preLaunchTask": "Develop Frontend",
+      "outFiles": [
+        "${workspaceFolder}/hass_frontend/frontend_latest/*.js"
+      ]
+    },
+    {
+      "name": "Debug Gallery",
+      "request": "launch",
+      "type": "pwa-chrome",
+      "url": "http://localhost:8100/",
+      "webRoot": "${workspaceFolder}/gallery/dist",
+      "disableNetworkCache": true,
+      "preLaunchTask": "Develop Gallery"
+    },
+    {
+      "name": "Debug Demo",
+      "request": "launch",
+      "type": "pwa-chrome",
+      "url": "http://localhost:8090/",
+      "webRoot": "${workspaceFolder}/demo/dist",
+      "disableNetworkCache": true,
+      "preLaunchTask": "Develop Demo"
+    },
+    {
+      "name": "Debug Cast",
+      "request": "launch",
+      "type": "pwa-chrome",
+      "url": "http://localhost:8080/",
+      "webRoot": "${workspaceFolder}/cast/dist",
+      "disableNetworkCache": true,
+      "preLaunchTask": "Develop Cast"
+    },
+  ]
+}

.vscode/tasks.json

@@ -0,0 +1,208 @@
+{
+  "version": "2.0.0",
+  "tasks": [
+    {
+      "label": "Develop Frontend",
+      "type": "gulp",
+      "task": "develop-app",
+      // Sync changes here to other tasks until issue resolved
+      // https://github.com/Microsoft/vscode/issues/61497
+      "problemMatcher": {
+        "owner": "ha-build",
+        "source": "ha-build",
+        "fileLocation": "absolute",
+        "severity": "error",
+        "pattern": [
+          {
+            "regexp": "(SyntaxError): (.+): (.+) \\((\\d+):(\\d+)\\)",
+            "severity": 1,
+            "file": 2,
+            "message": 3,
+            "line": 4,
+            "column": 5
+          }
+        ],
+        "background": {
+          "activeOnStart": true,
+          "beginsPattern": "Changes detected. Starting compilation",
+          "endsPattern": "Build done @"
+        }
+      },
+      "isBackground": true,
+      "group": {
+        "kind": "build",
+        "isDefault": true
+      },
+      "runOptions": {
+        "instanceLimit": 1
+      }
+    },
+    {
+      "label": "Develop Supervisor panel",
+      "type": "gulp",
+      "task": "develop-hassio",
+      "problemMatcher": {
+        "owner": "ha-build",
+        "source": "ha-build",
+        "fileLocation": "absolute",
+        "severity": "error",
+        "pattern": [
+          {
+            "regexp": "(SyntaxError): (.+): (.+) \\((\\d+):(\\d+)\\)",
+            "severity": 1,
+            "file": 2,
+            "message": 3,
+            "line": 4,
+            "column": 5
+          }
+        ],
+        "background": {
+          "activeOnStart": true,
+          "beginsPattern": "Changes detected. Starting compilation",
+          "endsPattern": "Build done @"
+        }
+      },
+      "isBackground": true,
+      "group": "build",
+      "runOptions": {
+        "instanceLimit": 1
+      }
+    },
+    {
+      "label": "Develop Gallery",
+      "type": "gulp",
+      "task": "develop-gallery",
+      "problemMatcher": {
+        "owner": "ha-build",
+        "source": "ha-build",
+        "fileLocation": "absolute",
+        "severity": "error",
+        "pattern": [
+          {
+            "regexp": "(SyntaxError): (.+): (.+) \\((\\d+):(\\d+)\\)",
+            "severity": 1,
+            "file": 2,
+            "message": 3,
+            "line": 4,
+            "column": 5
+          }
+        ],
+        "background": {
+          "activeOnStart": true,
+          "beginsPattern": "Changes detected. Starting compilation",
+          "endsPattern": "Build done @"
+        }
+      },
+
+      "isBackground": true,
+      "group": "build",
+      "runOptions": {
+        "instanceLimit": 1
+      }
+    },
+    {
+      "label": "Develop Demo",
+      "type": "gulp",
+      "task": "develop-demo",
+      "problemMatcher": {
+        "owner": "ha-build",
+        "source": "ha-build",
+        "fileLocation": "absolute",
+        "severity": "error",
+        "pattern": [
+          {
+            "regexp": "(SyntaxError): (.+): (.+) \\((\\d+):(\\d+)\\)",
+            "severity": 1,
+            "file": 2,
+            "message": 3,
+            "line": 4,
+            "column": 5
+          }
+        ],
+        "background": {
+          "activeOnStart": true,
+          "beginsPattern": "Changes detected. Starting compilation",
+          "endsPattern": "Build done @"
+        }
+      },
+
+      "isBackground": true,
+      "group": "build",
+      "runOptions": {
+        "instanceLimit": 1
+      }
+    },
+    {
+      "label": "Develop Cast",
+      "type": "gulp",
+      "task": "develop-cast",
+      "problemMatcher": {
+        "owner": "ha-build",
+        "source": "ha-build",
+        "fileLocation": "absolute",
+        "severity": "error",
+        "pattern": [
+          {
+            "regexp": "(SyntaxError): (.+): (.+) \\((\\d+):(\\d+)\\)",
+            "severity": 1,
+            "file": 2,
+            "message": 3,
+            "line": 4,
+            "column": 5
+          }
+        ],
+        "background": {
+          "activeOnStart": true,
+          "beginsPattern": "Changes detected. Starting compilation",
+          "endsPattern": "Build done @"
+        }
+      },
+
+      "isBackground": true,
+      "group": "build",
+      "runOptions": {
+        "instanceLimit": 1
+      }
+    },
+    {
+      "label": "Run HA Core in devcontainer",
+      "type": "shell",
+      "command": "script/core",
+      "isBackground": true,
+      "group": {
+        "kind": "build",
+        "isDefault": true
+      },
+      "problemMatcher": [],
+      "runOptions": {
+        "instanceLimit": 1
+      }
+    },
+    {
+      "label": "Run HA Core for Supervisor in devcontainer",
+      "type": "shell",
+      "command": "HASSIO=${input:supervisorHost} HASSIO_TOKEN=${input:supervisorToken} script/core",
+      "isBackground": true,
+      "group": {
+        "kind": "build",
+        "isDefault": true
+      },
+      "problemMatcher": [],
+      "runOptions": {
+        "instanceLimit": 1
+      }
+    }
+  ],
+  "inputs": [
+    {
+      "id": "supervisorHost",
+      "type": "promptString",
+      "description": "The IP of the Supervisor host running the Remote API proxy add-on"
+    },
+    {
+      "id": "supervisorToken",
+      "type": "promptString",
+      "description": "The token for the Remote API proxy add-on"
+    }
+  ]
+}

README.md

@@ -14,7 +14,7 @@ This is the repository for the official [Home Assistant](https://home-assistant.
 - Development: [Instructions](https://developers.home-assistant.io/docs/frontend/development/)
 - Production build: `script/build_frontend`
 - Gallery: `cd gallery && script/develop_gallery`
-- Hass.io: [Instructions](https://developers.home-assistant.io/docs/en/hassio_hass.html)
+- Supervisor: [Instructions](https://developers.home-assistant.io/docs/supervisor/developing)
 
 ## Frontend development
 
@@ -26,4 +26,4 @@ A complete guide can be found at the following [link](https://www.home-assistant
 
 Home Assistant is open-source and Apache 2 licensed. Feel free to browse the repository, learn and reuse parts in your own projects.
 
-We use [BrowserStack](https://www.browserstack.com) to test Home Assistant on a large variation of devices.
+We use [BrowserStack](https://www.browserstack.com) to test Home Assistant on a large variety of devices.

build-scripts/README.md

@@ -0,0 +1,39 @@
+# Bundling Home Assistant Frontend
+
+The Home Assistant build pipeline contains various steps to prepare a build.
+
+- Generating icon files to be included
+- Generating translation files to be included
+- Converting TypeScript, CSS and JSON files to JavaScript
+- Bundling
+- Minifying the files
+- Generating the HTML entrypoint files
+- Generating the service worker
+- Compressing the files
+
+## Converting files
+
+Currently in Home Assistant we use a bundler to convert TypeScript, CSS and JSON files to JavaScript files that the browser understands.
+
+We currently rely on Webpack but also have experimental Rollup support. Both of these programs bundle the converted files in both production and development.
+
+For development, bundling is optional. We just want to get the right files in the browser.
+
+Responsibilities of the converter during development:
+
+- Convert TypeScript to JavaScript
+- Convert CSS to JavaScript that sets the content as the default export
+- Convert JSON to JavaScript that sets the content as the default export
+- Make sure import, dynamic import and web worker references work
+  - Add extensions where missing
+  - Resolve absolute package imports
+- Filter out specific imports/packages
+- Replace constants with values
+
+In production, the following responsibilities are added:
+
+- Minify HTML
+- Bundle multiple imports so that the browser can fetch less files
+- Generate a second version that is ES5 compatible
+
+Configuration for all these steps are specified in [bundle.js](bundle.js).

build-scripts/bundle.js

@@ -44,7 +44,7 @@ module.exports.definedVars = ({ isProdBuild, latestBuild, defineOverlay }) => ({
 });
 
 module.exports.terserOptions = (latestBuild) => ({
-  safari10: true,
+  safari10: !latestBuild,
   ecma: latestBuild ? undefined : 5,
   output: { comments: false },
 });
@@ -52,7 +52,13 @@ module.exports.terserOptions = (latestBuild) => ({
 module.exports.babelOptions = ({ latestBuild }) => ({
   babelrc: false,
   presets: [
-    !latestBuild && [require("@babel/preset-env").default, { modules: false }],
+    !latestBuild && [
+      require("@babel/preset-env").default,
+      {
+        useBuiltIns: "entry",
+        corejs: "3.6",
+      },
+    ],
     require("@babel/preset-typescript").default,
   ].filter(Boolean),
   plugins: [
@@ -62,7 +68,8 @@ module.exports.babelOptions = ({ latestBuild }) => ({
       { loose: true, useBuiltIns: true },
     ],
     // Only support the syntax, Webpack will handle it.
-    "@babel/syntax-dynamic-import",
+    "@babel/plugin-syntax-import-meta",
+    "@babel/plugin-syntax-dynamic-import",
     "@babel/plugin-proposal-optional-chaining",
     "@babel/plugin-proposal-nullish-coalescing-operator",
     [
@@ -110,7 +117,7 @@ BundleConfig {
 */
 
 module.exports.config = {
-  app({ isProdBuild, latestBuild, isStatsBuild }) {
+  app({ isProdBuild, latestBuild, isStatsBuild, isWDS }) {
     return {
       entry: {
         service_worker: "./src/entrypoints/service_worker.ts",
@@ -125,6 +132,7 @@ module.exports.config = {
       isProdBuild,
       latestBuild,
       isStatsBuild,
+      isWDS,
     };
   },
 

build-scripts/env.js

@@ -6,6 +6,9 @@ module.exports = {
   useRollup() {
     return process.env.ROLLUP === "1";
   },
+  useWDS() {
+    return process.env.WDS === "1";
+  },
   isProdBuild() {
     return (
       process.env.NODE_ENV === "production" || module.exports.isStatsBuild()

build-scripts/gulp/app.js

@@ -12,6 +12,7 @@ require("./webpack.js");
 require("./service-worker.js");
 require("./entry-html.js");
 require("./rollup.js");
+require("./wds.js");
 
 gulp.task(
   "develop-app",
@@ -28,7 +29,11 @@ gulp.task(
       "build-translations"
     ),
     "copy-static-app",
-    env.useRollup() ? "rollup-watch-app" : "webpack-watch-app"
+    env.useWDS()
+      ? "wds-watch-app"
+      : env.useRollup()
+      ? "rollup-watch-app"
+      : "webpack-watch-app"
   )
 );
 

build-scripts/gulp/entry-html.js

@@ -19,6 +19,7 @@ const renderTemplate = (pth, data = {}, pathFunc = templatePath) => {
   return compiled({
     ...data,
     useRollup: env.useRollup(),
+    useWDS: env.useWDS(),
     renderTemplate,
   });
 };
@@ -90,10 +91,23 @@ gulp.task("gen-pages-prod", (done) => {
 });
 
 gulp.task("gen-index-app-dev", (done) => {
+  let latestAppJS, latestCoreJS, latestCustomPanelJS;
+
+  if (env.useWDS()) {
+    latestAppJS = "http://localhost:8000/src/entrypoints/app.ts";
+    latestCoreJS = "http://localhost:8000/src/entrypoints/core.ts";
+    latestCustomPanelJS =
+      "http://localhost:8000/src/entrypoints/custom-panel.ts";
+  } else {
+    latestAppJS = "/frontend_latest/app.js";
+    latestCoreJS = "/frontend_latest/core.js";
+    latestCustomPanelJS = "/frontend_latest/custom-panel.js";
+  }
+
   const content = renderTemplate("index", {
-    latestAppJS: "/frontend_latest/app.js",
-    latestCoreJS: "/frontend_latest/core.js",
-    latestCustomPanelJS: "/frontend_latest/custom-panel.js",
+    latestAppJS,
+    latestCoreJS,
+    latestCustomPanelJS,
 
     es5AppJS: "/frontend_es5/app.js",
     es5CoreJS: "/frontend_es5/core.js",

build-scripts/gulp/translations.js

@@ -7,7 +7,6 @@ const gulp = require("gulp");
 const fs = require("fs");
 const foreach = require("gulp-foreach");
 const merge = require("gulp-merge-json");
-const minify = require("gulp-jsonminify");
 const rename = require("gulp-rename");
 const transform = require("gulp-json-transform");
 const { mapFiles } = require("../util");
@@ -34,21 +33,10 @@ String.prototype.rsplit = function (sep, maxsplit) {
     : split;
 };
 
-// Panel translations which should be split from the core translations. These
-// should mirror the fragment definitions in polymer.json, so that we load
-// additional resources at equivalent points.
-const TRANSLATION_FRAGMENTS = [
-  "config",
-  "history",
-  "logbook",
-  "mailbox",
-  "profile",
-  "shopping-list",
-  "page-authorize",
-  "page-demo",
-  "page-onboarding",
-  "developer-tools",
-];
+// Panel translations which should be split from the core translations.
+const TRANSLATION_FRAGMENTS = Object.keys(
+  require("../../src/translations/en.json").ui.panel
+);
 
 function recursiveFlatten(prefix, data) {
   let output = {};
@@ -301,7 +289,6 @@ gulp.task("build-flattened-translations", function () {
         return flatten(data);
       })
     )
-    .pipe(minify())
     .pipe(
       rename((filePath) => {
         if (filePath.dirname === "core") {

build-scripts/gulp/wds.js

@@ -0,0 +1,11 @@
+// Tasks to run Rollup
+const gulp = require("gulp");
+const { startDevServer } = require("@web/dev-server");
+
+gulp.task("wds-watch-app", () => {
+  startDevServer({
+    config: {
+      watch: true,
+    },
+  });
+});

build-scripts/gulp/webpack.js

@@ -18,6 +18,14 @@ const bothBuilds = (createConfigFunc, params) => [
   createConfigFunc({ ...params, latestBuild: false }),
 ];
 
+/**
+ * @param {{
+ *   compiler: import("webpack").Compiler,
+ *   contentBase: string,
+ *   port: number,
+ *   listenHost?: string
+ * }}
+ */
 const runDevServer = ({
   compiler,
   contentBase,
@@ -33,10 +41,13 @@ const runDevServer = ({
       throw err;
     }
     // Server listening
-    log("[webpack-dev-server]", `http://localhost:${port}`);
+    log(
+      "[webpack-dev-server]",
+      `Project is running at http://localhost:${port}`
+    );
   });
 
-const handler = (done) => (err, stats) => {
+const doneHandler = (done) => (err, stats) => {
   if (err) {
     log.error(err.stack || err);
     if (err.details) {
@@ -45,22 +56,31 @@ const handler = (done) => (err, stats) => {
     return;
   }
 
-  log(`Build done @ ${new Date().toLocaleTimeString()}`);
-
   if (stats.hasErrors() || stats.hasWarnings()) {
-    log.warn(stats.toString("minimal"));
+    console.log(stats.toString("minimal"));
   }
 
+  log(`Build done @ ${new Date().toLocaleTimeString()}`);
+
   if (done) {
     done();
   }
 };
 
+const prodBuild = (conf) =>
+  new Promise((resolve) => {
+    webpack(
+      conf,
+      // Resolve promise when done. Because we pass a callback, webpack closes itself
+      doneHandler(resolve)
+    );
+  });
+
 gulp.task("webpack-watch-app", () => {
-  // we are not calling done, so this command will run forever
+  // This command will run forever because we don't close compiler
   webpack(createAppConfig({ isProdBuild: false, latestBuild: true })).watch(
     { ignored: /build-translations/ },
-    handler()
+    doneHandler()
   );
   gulp.watch(
     path.join(paths.translations_src, "en.json"),
@@ -68,15 +88,12 @@ gulp.task("webpack-watch-app", () => {
   );
 });
 
-gulp.task(
-  "webpack-prod-app",
-  () =>
-    new Promise((resolve) =>
-      webpack(
-        bothBuilds(createAppConfig, { isProdBuild: true }),
-        handler(resolve)
-      )
-    )
+gulp.task("webpack-prod-app", () =>
+  prodBuild(
+    bothBuilds(createAppConfig, {
+      isProdBuild: true,
+    })
+  )
 );
 
 gulp.task("webpack-dev-server-demo", () => {
@@ -87,17 +104,12 @@ gulp.task("webpack-dev-server-demo", () => {
   });
 });
 
-gulp.task(
-  "webpack-prod-demo",
-  () =>
-    new Promise((resolve) =>
-      webpack(
-        bothBuilds(createDemoConfig, {
-          isProdBuild: true,
-        }),
-        handler(resolve)
-      )
-    )
+gulp.task("webpack-prod-demo", () =>
+  prodBuild(
+    bothBuilds(createDemoConfig, {
+      isProdBuild: true,
+    })
+  )
 );
 
 gulp.task("webpack-dev-server-cast", () => {
@@ -110,41 +122,30 @@ gulp.task("webpack-dev-server-cast", () => {
   });
 });
 
-gulp.task(
-  "webpack-prod-cast",
-  () =>
-    new Promise((resolve) =>
-      webpack(
-        bothBuilds(createCastConfig, {
-          isProdBuild: true,
-        }),
-
-        handler(resolve)
-      )
-    )
+gulp.task("webpack-prod-cast", () =>
+  prodBuild(
+    bothBuilds(createCastConfig, {
+      isProdBuild: true,
+    })
+  )
 );
 
 gulp.task("webpack-watch-hassio", () => {
-  // we are not calling done, so this command will run forever
+  // This command will run forever because we don't close compiler
   webpack(
     createHassioConfig({
       isProdBuild: false,
       latestBuild: true,
     })
-  ).watch({}, handler());
+  ).watch({}, doneHandler());
 });
 
-gulp.task(
-  "webpack-prod-hassio",
-  () =>
-    new Promise((resolve) =>
-      webpack(
-        bothBuilds(createHassioConfig, {
-          isProdBuild: true,
-        }),
-        handler(resolve)
-      )
-    )
+gulp.task("webpack-prod-hassio", () =>
+  prodBuild(
+    bothBuilds(createHassioConfig, {
+      isProdBuild: true,
+    })
+  )
 );
 
 gulp.task("webpack-dev-server-gallery", () => {
@@ -156,17 +157,11 @@ gulp.task("webpack-dev-server-gallery", () => {
   });
 });
 
-gulp.task(
-  "webpack-prod-gallery",
-  () =>
-    new Promise((resolve) =>
-      webpack(
-        createGalleryConfig({
-          isProdBuild: true,
-          latestBuild: true,
-        }),
-
-        handler(resolve)
-      )
-    )
+gulp.task("webpack-prod-gallery", () =>
+  prodBuild(
+    createGalleryConfig({
+      isProdBuild: true,
+      latestBuild: true,
+    })
+  )
 );

build-scripts/paths.js

@@ -1,4 +1,4 @@
-var path = require("path");
+const path = require("path");
 
 module.exports = {
   polymer_dir: path.resolve(__dirname, ".."),

build-scripts/rollup-plugins/ignore-plugin.js

@@ -1,5 +1,3 @@
-const path = require("path");
-
 module.exports = function (userOptions = {}) {
   // Files need to be absolute paths.
   // This only works if the file has no exports

build-scripts/rollup.js

@@ -3,7 +3,7 @@ const path = require("path");
 const commonjs = require("@rollup/plugin-commonjs");
 const resolve = require("@rollup/plugin-node-resolve");
 const json = require("@rollup/plugin-json");
-const babel = require("rollup-plugin-babel");
+const babel = require("@rollup/plugin-babel").babel;
 const replace = require("@rollup/plugin-replace");
 const visualizer = require("rollup-plugin-visualizer");
 const { string } = require("rollup-plugin-string");
@@ -31,6 +31,7 @@ const createRollupConfig = ({
   isStatsBuild,
   publicPath,
   dontHash,
+  isWDS,
 }) => {
   return {
     /**
@@ -61,6 +62,7 @@ const createRollupConfig = ({
           ...bundle.babelOptions({ latestBuild }),
           extensions,
           exclude: bundle.babelExclude(),
+          babelHelpers: isWDS ? "inline" : "bundled",
         }),
         string({
           // Import certain extensions as strings
@@ -69,19 +71,21 @@ const createRollupConfig = ({
         replace(
           bundle.definedVars({ isProdBuild, latestBuild, defineOverlay })
         ),
-        manifest({
-          publicPath,
-        }),
-        worker(),
-        dontHashPlugin({ dontHash }),
-        isProdBuild && terser(bundle.terserOptions(latestBuild)),
-        isStatsBuild &&
+        !isWDS &&
+          manifest({
+            publicPath,
+          }),
+        !isWDS && worker(),
+        !isWDS && dontHashPlugin({ dontHash }),
+        !isWDS && isProdBuild && terser(bundle.terserOptions(latestBuild)),
+        !isWDS &&
+          isStatsBuild &&
           visualizer({
             // https://github.com/btd/rollup-plugin-visualizer#options
             open: true,
             sourcemap: true,
           }),
-      ],
+      ].filter(Boolean),
     },
     /**
      * @type { import("rollup").OutputOptions }
@@ -108,12 +112,13 @@ const createRollupConfig = ({
   };
 };
 
-const createAppConfig = ({ isProdBuild, latestBuild, isStatsBuild }) => {
+const createAppConfig = ({ isProdBuild, latestBuild, isStatsBuild, isWDS }) => {
   return createRollupConfig(
     bundle.config.app({
       isProdBuild,
       latestBuild,
       isStatsBuild,
+      isWDS,
     })
   );
 };

build-scripts/webpack.js

@@ -2,9 +2,23 @@ const webpack = require("webpack");
 const path = require("path");
 const TerserPlugin = require("terser-webpack-plugin");
 const ManifestPlugin = require("webpack-manifest-plugin");
-const WorkerPlugin = require("worker-plugin");
 const paths = require("./paths.js");
 const bundle = require("./bundle");
+const log = require("fancy-log");
+
+class LogStartCompilePlugin {
+  ignoredFirst = false;
+
+  apply(compiler) {
+    compiler.hooks.beforeCompile.tap("LogStartCompilePlugin", () => {
+      if (!this.ignoredFirst) {
+        this.ignoredFirst = true;
+        return;
+      }
+      log("Changes detected. Starting compilation");
+    });
+  }
+}
 
 const createWebpackConfig = ({
   entry,
@@ -22,6 +36,7 @@ const createWebpackConfig = ({
   const ignorePackages = bundle.ignorePackages({ latestBuild });
   return {
     mode: isProdBuild ? "production" : "development",
+    target: ["web", latestBuild ? "es2017" : "es5"],
     devtool: isProdBuild
       ? "cheap-module-source-map"
       : "eval-cheap-module-source-map",
@@ -30,7 +45,7 @@ const createWebpackConfig = ({
     module: {
       rules: [
         {
-          test: /\.js$|\.ts$/,
+          test: /\.m?js$|\.ts$/,
           exclude: bundle.babelExclude(),
           use: {
             loader: "babel-loader",
@@ -46,16 +61,13 @@ const createWebpackConfig = ({
     optimization: {
       minimizer: [
         new TerserPlugin({
-          cache: true,
           parallel: true,
           extractComments: true,
-          sourceMap: true,
           terserOptions: bundle.terserOptions(latestBuild),
         }),
       ],
     },
     plugins: [
-      new WorkerPlugin(),
       new ManifestPlugin({
         // Only include the JS of entrypoints
         filter: (file) => file.isInitial && !file.name.endsWith(".map"),
@@ -99,7 +111,17 @@ const createWebpackConfig = ({
         new RegExp(bundle.emptyPackages({ latestBuild }).join("|")),
         path.resolve(paths.polymer_dir, "src/util/empty.js")
       ),
-    ],
+      // We need to change the import of the polyfill for EventTarget, so we replace the polyfill file with our customized one
+      new webpack.NormalModuleReplacementPlugin(
+        new RegExp(
+          require.resolve(
+            "lit-virtualizer/lib/uni-virtualizer/lib/polyfillLoaders/EventTarget.js"
+          )
+        ),
+        path.resolve(paths.polymer_dir, "src/resources/EventTarget-ponyfill.js")
+      ),
+      !isProdBuild && new LogStartCompilePlugin(),
+    ].filter(Boolean),
     resolve: {
       extensions: [".ts", ".js", ".json"],
     },

cast/src/html/launcher-faq.html.template

@@ -212,13 +212,8 @@
           Chromecast is a technology developed by Google, and is available on:
         </p>
         <ul>
-          <li>Google Chrome (all platforms except on iOS)</li>
-          <li>
-            Microsoft Edge (all platforms,
-            <a href="https://www.microsoftedgeinsider.com" target="_blank"
-              >dev and canary builds only</a
-            >)
-          </li>
+          <li>Google Chrome (all platforms except iOS)</li>
+          <li>Microsoft Edge (all platforms)</li>
         </ul>
       </div>
 

cast/src/launcher/layout/hc-layout.ts

@@ -30,7 +30,7 @@ class HcLayout extends LitElement {
       <ha-card>
         <div class="layout">
           <img class="hero" src="/images/google-nest-hub.png" />
-          <div class="card-header">
+          <h1 class="card-header">
             Home Assistant Cast${this.subtitle ? ` – ${this.subtitle}` : ""}
             ${this.auth
               ? html`
@@ -44,7 +44,7 @@ class HcLayout extends LitElement {
                   </div>
                 `
               : ""}
-          </div>
+          </h1>
           <slot></slot>
         </div>
       </ha-card>

cast/src/receiver/entrypoint.ts

@@ -6,13 +6,60 @@ import { castContext } from "./cast_context";
 import { HcMain } from "./layout/hc-main";
 import { ReceivedMessage } from "./types";
 
-const controller = new HcMain();
-document.body.append(controller);
+const lovelaceController = new HcMain();
+document.body.append(lovelaceController);
+
+const mediaPlayer = document.createElement("cast-media-player");
+mediaPlayer.style.display = "none";
+document.body.append(mediaPlayer);
+const playerStylesAdded = false;
+
+let controls: HTMLElement | null;
+
+const setTouchControlsVisibility = (visible: boolean) => {
+  if (!castContext.getDeviceCapabilities().touch_input_supported) {
+    return;
+  }
+  controls =
+    controls ||
+    (document.body.querySelector("touch-controls") as HTMLElement | null);
+  if (controls) {
+    controls.style.display = visible ? "initial" : "none";
+  }
+};
+
+const showLovelaceController = () => {
+  mediaPlayer.style.display = "none";
+  lovelaceController.style.display = "initial";
+  document.body.setAttribute("style", "overflow-y: auto !important");
+  setTouchControlsVisibility(false);
+};
+
+const showMediaPlayer = () => {
+  lovelaceController.style.display = "none";
+  mediaPlayer.style.display = "initial";
+  document.body.removeAttribute("style");
+  setTouchControlsVisibility(true);
+  if (!playerStylesAdded) {
+    const style = document.createElement("style");
+    style.innerHTML = `
+    body {
+      --logo-image: url('https://www.home-assistant.io/images/home-assistant-logo.svg');
+      --logo-repeat: no-repeat;
+      --playback-logo-image: url('https://www.home-assistant.io/images/home-assistant-logo.svg');
+      --theme-hue: 200;
+      --progress-color: #03a9f4;
+      --splash-image: url('https://home-assistant.io/images/cast/splash.png');
+      --splash-size: cover;
+    }
+    `;
+    document.head.appendChild(style);
+  }
+};
 
 const options = new cast.framework.CastReceiverOptions();
 options.disableIdleTimeout = true;
 options.customNamespaces = {
-  // @ts-ignore
   [CAST_NS]: cast.framework.system.MessageType.JSON,
 };
 
@@ -30,13 +77,61 @@ options.uiConfig = new cast.framework.ui.UiConfig();
 // @ts-ignore
 options.uiConfig.touchScreenOptimizedApp = true;
 
+castContext.setInactivityTimeout(86400); // 1 day
+
 castContext.addCustomMessageListener(
   CAST_NS,
   // @ts-ignore
   (ev: ReceivedMessage<HassMessage>) => {
+    // We received a show Lovelace command, stop media from playing, hide media player and show Lovelace controller
+    if (
+      playerManager.getPlayerState() !==
+      cast.framework.messages.PlayerState.IDLE
+    ) {
+      playerManager.stop();
+    } else {
+      showLovelaceController();
+    }
     const msg = ev.data;
     msg.senderId = ev.senderId;
-    controller.processIncomingMessage(msg);
+    lovelaceController.processIncomingMessage(msg);
+  }
+);
+
+const playerManager = castContext.getPlayerManager();
+
+playerManager.setMessageInterceptor(
+  cast.framework.messages.MessageType.LOAD,
+  (loadRequestData) => {
+    // We received a play media command, hide Lovelace and show media player
+    showMediaPlayer();
+    const media = loadRequestData.media;
+    // Special handling if it came from Google Assistant
+    if (media.entity) {
+      media.contentId = media.entity;
+      media.streamType = cast.framework.messages.StreamType.LIVE;
+      media.contentType = "application/vnd.apple.mpegurl";
+      // @ts-ignore
+      media.hlsVideoSegmentFormat =
+        cast.framework.messages.HlsVideoSegmentFormat.FMP4;
+    }
+    return loadRequestData;
+  }
+);
+
+playerManager.addEventListener(
+  cast.framework.events.EventType.MEDIA_STATUS,
+  (event) => {
+    if (
+      event.mediaStatus?.playerState ===
+        cast.framework.messages.PlayerState.IDLE &&
+      event.mediaStatus?.idleReason &&
+      event.mediaStatus?.idleReason !==
+        cast.framework.messages.IdleReason.INTERRUPTED
+    ) {
+      // media finished or stopped, return to default Lovelace
+      showLovelaceController();
+    }
   }
 );
 

cast/src/receiver/layout/hc-lovelace.ts

@@ -9,7 +9,6 @@ import {
 } from "lit-element";
 import { LovelaceConfig } from "../../../../src/data/lovelace";
 import { Lovelace } from "../../../../src/panels/lovelace/types";
-import "../../../../src/panels/lovelace/views/hui-panel-view";
 import "../../../../src/panels/lovelace/views/hui-view";
 import { HomeAssistant } from "../../../../src/types";
 import "./hc-launch-screen";
@@ -45,22 +44,13 @@ class HcLovelace extends LitElement {
       deleteConfig: async () => undefined,
       setEditMode: () => undefined,
     };
-    return this.lovelaceConfig.views[index].panel
-      ? html`
-          <hui-panel-view
-            .hass=${this.hass}
-            .lovelace=${lovelace}
-            .config=${this.lovelaceConfig.views[index]}
-          ></hui-panel-view>
-        `
-      : html`
-          <hui-view
-            .hass=${this.hass}
-            .lovelace=${lovelace}
-            .index=${index}
-            columns="2"
-          ></hui-view>
-        `;
+    return html`
+      <hui-view
+        .hass=${this.hass}
+        .lovelace=${lovelace}
+        .index=${index}
+      ></hui-view>
+    `;
   }
 
   protected updated(changedProps) {
@@ -76,7 +66,7 @@ class HcLovelace extends LitElement {
 
         if (configBackground) {
           (this.shadowRoot!.querySelector(
-            "hui-view, hui-panel-view"
+            "hui-view"
           ) as HTMLElement)!.style.setProperty(
             "--lovelace-background",
             configBackground

cast/src/receiver/layout/hc-main.ts

@@ -216,9 +216,7 @@ export class HcMain extends HassElement {
     }
     this._showDemo = false;
     this._lovelacePath = msg.viewPath;
-    if (castContext.getDeviceCapabilities().touch_input_supported) {
-      this._breakFree();
-    }
+
     this._sendStatus();
   }
 
@@ -241,9 +239,6 @@ export class HcMain extends HassElement {
       this._showDemo = true;
       this._lovelacePath = "overview";
       this._sendStatus();
-      if (castContext.getDeviceCapabilities().touch_input_supported) {
-        this._breakFree();
-      }
     });
   }
 
@@ -264,14 +259,6 @@ export class HcMain extends HassElement {
     }
   }
 
-  private _breakFree() {
-    const controls = document.body.querySelector("touch-controls");
-    if (controls) {
-      controls.remove();
-    }
-    document.body.setAttribute("style", "overflow-y: auto !important");
-  }
-
   private sendMessage(senderId: string, response: any) {
     castContext.sendCustomMessage(CAST_NS, senderId, response);
   }

demo/src/configs/demo-configs.ts

@@ -3,22 +3,10 @@ import { Lovelace } from "../../../src/panels/lovelace/types";
 import { DemoConfig } from "./types";
 
 export const demoConfigs: Array<() => Promise<DemoConfig>> = [
-  () =>
-    import(/* webpackChunkName: "arsaboo" */ "./arsaboo").then(
-      (mod) => mod.demoArsaboo
-    ),
-  () =>
-    import(/* webpackChunkName: "teachingbirds" */ "./teachingbirds").then(
-      (mod) => mod.demoTeachingbirds
-    ),
-  () =>
-    import(/* webpackChunkName: "kernehed" */ "./kernehed").then(
-      (mod) => mod.demoKernehed
-    ),
-  () =>
-    import(/* webpackChunkName: "jimpower" */ "./jimpower").then(
-      (mod) => mod.demoJimpower
-    ),
+  () => import("./arsaboo").then((mod) => mod.demoArsaboo),
+  () => import("./teachingbirds").then((mod) => mod.demoTeachingbirds),
+  () => import("./kernehed").then((mod) => mod.demoKernehed),
+  () => import("./jimpower").then((mod) => mod.demoJimpower),
 ];
 
 // eslint-disable-next-line import/no-mutable-exports

demo/src/configs/teachingbirds/lovelace.ts

@@ -7,205 +7,183 @@ export const demoLovelaceTeachingbirds: DemoConfig["lovelace"] = () => ({
       cards: [
         { type: "custom:ha-demo-card" },
         {
+          type: "grid",
+          columns: 4,
           cards: [
             {
-              cards: [
+              image: "/assets/teachingbirds/isa_square.jpg",
+              type: "picture-entity",
+              show_name: false,
+              tap_action: {
+                action: "more-info",
+              },
+              entity: "sensor.presence_isa",
+            },
+            {
+              image: "/assets/teachingbirds/Stefan_square.jpg",
+              type: "picture-entity",
+              show_name: false,
+              tap_action: {
+                action: "more-info",
+              },
+              entity: "sensor.presence_stefan",
+            },
+            {
+              image: "/assets/teachingbirds/background_square.png",
+              elements: [
                 {
-                  image: "/assets/teachingbirds/isa_square.jpg",
-                  type: "picture-entity",
-                  show_name: false,
+                  state_image: {
+                    on: "/assets/teachingbirds/radiator_on.jpg",
+                    off: "/assets/teachingbirds/radiator_off.jpg",
+                  },
+                  type: "image",
+                  style: {
+                    width: "100%",
+                    top: "50%",
+                    left: "50%",
+                  },
                   tap_action: {
                     action: "more-info",
                   },
-                  entity: "sensor.presence_isa",
+                  entity: "switch.stefan_radiator_3",
                 },
                 {
-                  image: "/assets/teachingbirds/Stefan_square.jpg",
-                  type: "picture-entity",
-                  show_name: false,
-                  tap_action: {
-                    action: "more-info",
+                  style: {
+                    top: "90%",
+                    left: "50%",
                   },
-                  entity: "sensor.presence_stefan",
-                },
-                {
-                  image: "/assets/teachingbirds/background_square.png",
-                  elements: [
-                    {
-                      state_image: {
-                        on: "/assets/teachingbirds/radiator_on.jpg",
-                        off: "/assets/teachingbirds/radiator_off.jpg",
-                      },
-                      type: "image",
-                      style: {
-                        width: "100%",
-                        top: "50%",
-                        left: "50%",
-                      },
-                      tap_action: {
-                        action: "more-info",
-                      },
-                      entity: "switch.stefan_radiator_3",
-                    },
-                    {
-                      style: {
-                        top: "90%",
-                        left: "50%",
-                      },
-                      type: "state-label",
-                      entity: "sensor.temperature_stefan",
-                    },
-                  ],
-                  type: "picture-elements",
-                },
-                {
-                  image: "/assets/teachingbirds/background_square.png",
-                  elements: [
-                    {
-                      style: {
-                        "--mdc-icon-size": "100%",
-                        top: "50%",
-                        left: "50%",
-                      },
-                      type: "icon",
-                      tap_action: {
-                        action: "navigate",
-                        navigation_path: "/lovelace/home_info",
-                      },
-                      icon: "mdi:car",
-                    },
-                  ],
-                  type: "picture-elements",
-                },
-              ],
-              type: "horizontal-stack",
-            },
-            {
-              cards: [
-                {
-                  show_name: false,
-                  type: "picture-entity",
-                  name: "Alarm",
-                  image: "/assets/teachingbirds/House_square.jpg",
-                  entity: "alarm_control_panel.house",
-                },
-                {
-                  name: "Roomba",
-                  image: "/assets/teachingbirds/roomba_square.jpg",
-                  show_name: false,
-                  type: "picture-entity",
-                  state_image: {
-                    "Not Today": "/assets/teachingbirds/roomba_bw_square.jpg",
-                  },
-                  entity: "input_select.roomba_mode",
-                },
-                {
-                  show_name: false,
-                  type: "picture-entity",
-                  state_image: {
-                    Mail: "/assets/teachingbirds/mailbox_square.jpg",
-                    "Package and mail":
-                      "/assets/teachingbirds/mailbox_square.jpg",
-                    Empty: "/assets/teachingbirds/mailbox_bw_square.jpg",
-                    Package: "/assets/teachingbirds/mailbox_square.jpg",
-                  },
-                  entity: "sensor.mailbox",
-                },
-                {
-                  show_name: false,
-                  state_image: {
-                    "Put out": "/assets/teachingbirds/trash_square.jpg",
-                    "Take in": "/assets/teachingbirds/trash_square.jpg",
-                  },
-                  type: "picture-entity",
-                  image: "/assets/teachingbirds/trash_bear_bw_square.jpg",
-                  entity: "sensor.trash_status",
-                },
-              ],
-              type: "horizontal-stack",
-            },
-            {
-              cards: [
-                {
-                  state_image: {
-                    Idle: "/assets/teachingbirds/washer_square.jpg",
-                    Running: "/assets/teachingbirds/laundry_running_square.jpg",
-                    Clean: "/assets/teachingbirds/laundry_clean_2_square.jpg",
-                  },
-                  entity: "input_select.washing_machine_status",
-                  type: "picture-entity",
-                  show_name: false,
-                  name: "Washer",
-                },
-                {
-                  state_image: {
-                    Idle: "/assets/teachingbirds/dryer_square.jpg",
-                    Running: "/assets/teachingbirds/clothes_drying_square.jpg",
-                    Clean: "/assets/teachingbirds/folded_clothes_square.jpg",
-                  },
-                  entity: "input_select.dryer_status",
-                  type: "picture-entity",
-                  show_name: false,
-                  name: "Dryer",
-                },
-                {
-                  image: "/assets/teachingbirds/guests_square.jpg",
-                  type: "picture-entity",
-                  show_name: false,
-                  tap_action: {
-                    action: "toggle",
-                  },
-                  entity: "input_boolean.guest_mode",
-                },
-                {
-                  image: "/assets/teachingbirds/cleaning_square.jpg",
-                  type: "picture-entity",
-                  show_name: false,
-                  tap_action: {
-                    action: "toggle",
-                  },
-                  entity: "input_boolean.cleaning_day",
-                },
-              ],
-              type: "horizontal-stack",
-            },
-          ],
-          type: "vertical-stack",
-        },
-        {
-          type: "vertical-stack",
-          cards: [
-            {
-              cards: [
-                {
-                  graph: "line",
-                  type: "sensor",
-                  entity: "sensor.temperature_bedroom",
-                },
-                {
-                  graph: "line",
-                  type: "sensor",
-                  name: "S's room",
+                  type: "state-label",
                   entity: "sensor.temperature_stefan",
                 },
               ],
-              type: "horizontal-stack",
+              type: "picture-elements",
             },
             {
-              cards: [
+              image: "/assets/teachingbirds/background_square.png",
+              elements: [
                 {
-                  graph: "line",
-                  type: "sensor",
-                  entity: "sensor.temperature_passage",
-                },
-                {
-                  graph: "line",
-                  type: "sensor",
-                  name: "Laundry",
-                  entity: "sensor.temperature_downstairs_bathroom",
+                  style: {
+                    "--mdc-icon-size": "100%",
+                    top: "50%",
+                    left: "50%",
+                  },
+                  type: "icon",
+                  tap_action: {
+                    action: "navigate",
+                    navigation_path: "/lovelace/home_info",
+                  },
+                  icon: "mdi:car",
                 },
               ],
-              type: "horizontal-stack",
+              type: "picture-elements",
+            },
+
+            {
+              show_name: false,
+              type: "picture-entity",
+              name: "Alarm",
+              image: "/assets/teachingbirds/House_square.jpg",
+              entity: "alarm_control_panel.house",
+            },
+            {
+              name: "Roomba",
+              image: "/assets/teachingbirds/roomba_square.jpg",
+              show_name: false,
+              type: "picture-entity",
+              state_image: {
+                "Not Today": "/assets/teachingbirds/roomba_bw_square.jpg",
+              },
+              entity: "input_select.roomba_mode",
+            },
+            {
+              show_name: false,
+              type: "picture-entity",
+              state_image: {
+                Mail: "/assets/teachingbirds/mailbox_square.jpg",
+                "Package and mail": "/assets/teachingbirds/mailbox_square.jpg",
+                Empty: "/assets/teachingbirds/mailbox_bw_square.jpg",
+                Package: "/assets/teachingbirds/mailbox_square.jpg",
+              },
+              entity: "sensor.mailbox",
+            },
+            {
+              show_name: false,
+              state_image: {
+                "Put out": "/assets/teachingbirds/trash_square.jpg",
+                "Take in": "/assets/teachingbirds/trash_square.jpg",
+              },
+              type: "picture-entity",
+              image: "/assets/teachingbirds/trash_bear_bw_square.jpg",
+              entity: "sensor.trash_status",
+            },
+
+            {
+              state_image: {
+                Idle: "/assets/teachingbirds/washer_square.jpg",
+                Running: "/assets/teachingbirds/laundry_running_square.jpg",
+                Clean: "/assets/teachingbirds/laundry_clean_2_square.jpg",
+              },
+              entity: "input_select.washing_machine_status",
+              type: "picture-entity",
+              show_name: false,
+              name: "Washer",
+            },
+            {
+              state_image: {
+                Idle: "/assets/teachingbirds/dryer_square.jpg",
+                Running: "/assets/teachingbirds/clothes_drying_square.jpg",
+                Clean: "/assets/teachingbirds/folded_clothes_square.jpg",
+              },
+              entity: "input_select.dryer_status",
+              type: "picture-entity",
+              show_name: false,
+              name: "Dryer",
+            },
+            {
+              image: "/assets/teachingbirds/guests_square.jpg",
+              type: "picture-entity",
+              show_name: false,
+              tap_action: {
+                action: "toggle",
+              },
+              entity: "input_boolean.guest_mode",
+            },
+            {
+              image: "/assets/teachingbirds/cleaning_square.jpg",
+              type: "picture-entity",
+              show_name: false,
+              tap_action: {
+                action: "toggle",
+              },
+              entity: "input_boolean.cleaning_day",
+            },
+          ],
+        },
+        {
+          type: "grid",
+          columns: 2,
+          cards: [
+            {
+              graph: "line",
+              type: "sensor",
+              entity: "sensor.temperature_bedroom",
+            },
+            {
+              graph: "line",
+              type: "sensor",
+              name: "S's room",
+              entity: "sensor.temperature_stefan",
+            },
+            {
+              graph: "line",
+              type: "sensor",
+              entity: "sensor.temperature_passage",
+            },
+            {
+              graph: "line",
+              type: "sensor",
+              name: "Laundry",
+              entity: "sensor.temperature_downstairs_bathroom",
             },
           ],
         },

demo/src/configs/types.ts

@@ -9,5 +9,5 @@ export interface DemoConfig {
   authorUrl: string;
   lovelace: (localize: LocalizeFunc) => LovelaceConfig;
   entities: (localize: LocalizeFunc) => Entity[];
-  theme: () => { [key: string]: string } | null;
+  theme: () => Record<string, string> | null;
 }

demo/src/entrypoint.ts

@@ -7,7 +7,5 @@ import "./ha-demo";
 
 /* polyfill for paper-dropdown */
 setTimeout(() => {
-  import(
-    /* webpackChunkName: "polyfill-web-animations-next" */ "web-animations-js/web-animations-next-lite.min"
-  );
+  import("web-animations-js/web-animations-next-lite.min");
 }, 1000);

demo/src/stubs/template.ts

@@ -6,4 +6,11 @@ export const mockTemplate = (hass: MockHomeAssistant) => {
       body: { message: "Template dev tool does not work in the demo." },
     })
   );
+  hass.mockWS("render_template", (msg, onChange) => {
+    onChange!({
+      result: msg.template,
+      listeners: { all: false, domains: [], entities: [], time: false },
+    });
+    return () => {};
+  });
 };

gallery/src/components/demo-card.js

@@ -21,15 +21,16 @@ class DemoCard extends PolymerElement {
         }
         pre {
           width: 400px;
-          margin: 16px;
+          margin: 0 16px;
           overflow: auto;
+          color: var(--primary-text-color);
         }
         @media only screen and (max-width: 800px) {
           .root {
             flex-direction: column;
           }
           pre {
-            margin-left: 0;
+            margin: 16px 0;
           }
         }
       </style>

gallery/src/components/demo-cards.js

@@ -5,11 +5,16 @@ import { PolymerElement } from "@polymer/polymer/polymer-element";
 import "../../../src/components/ha-switch";
 import "../../../src/components/ha-formfield";
 import "./demo-card";
+import { applyThemesOnElement } from "../../../src/common/dom/apply_themes_on_element";
 
 class DemoCards extends PolymerElement {
   static get template() {
     return html`
       <style>
+        #container {
+          min-height: calc(100vh - 128px);
+          background: var(--primary-background-color);
+        }
         .cards {
           display: flex;
           flex-wrap: wrap;
@@ -24,6 +29,9 @@ class DemoCards extends PolymerElement {
         .filters {
           margin-left: 60px;
         }
+        ha-formfield {
+          margin-right: 16px;
+        }
       </style>
       <app-toolbar>
         <div class="filters">
@@ -31,16 +39,21 @@ class DemoCards extends PolymerElement {
             <ha-switch checked="[[_showConfig]]" on-change="_showConfigToggled">
             </ha-switch>
           </ha-formfield>
+          <ha-formfield label="Dark theme">
+            <ha-switch on-change="_darkThemeToggled"> </ha-switch>
+          </ha-formfield>
         </div>
       </app-toolbar>
-      <div class="cards">
-        <template is="dom-repeat" items="[[configs]]">
-          <demo-card
-            config="[[item]]"
-            show-config="[[_showConfig]]"
-            hass="[[hass]]"
-          ></demo-card>
-        </template>
+      <div id="container">
+        <div class="cards">
+          <template is="dom-repeat" items="[[configs]]">
+            <demo-card
+              config="[[item]]"
+              show-config="[[_showConfig]]"
+              hass="[[hass]]"
+            ></demo-card>
+          </template>
+        </div>
       </div>
     `;
   }
@@ -59,6 +72,12 @@ class DemoCards extends PolymerElement {
   _showConfigToggled(ev) {
     this._showConfig = ev.target.checked;
   }
+
+  _darkThemeToggled(ev) {
+    applyThemesOnElement(this.$.container, { themes: {} }, "default", {
+      dark: ev.target.checked,
+    });
+  }
 }
 
 customElements.define("demo-cards", DemoCards);

gallery/src/components/demo-more-info.js

@@ -3,60 +3,61 @@ import { html } from "@polymer/polymer/lib/utils/html-tag";
 import { PolymerElement } from "@polymer/polymer/polymer-element";
 import "../../../src/components/ha-card";
 import "../../../src/state-summary/state-card-content";
-import "./more-info-content";
+import "../../../src/dialogs/more-info/more-info-content";
 
 class DemoMoreInfo extends PolymerElement {
   static get template() {
     return html`
       <style>
-        :host {
+        .root {
           display: flex;
-          align-items: start;
         }
-
+        #card {
+          max-width: 400px;
+          width: 100vw;
+        }
         ha-card {
-          width: 333px;
+          width: 352px;
+          padding: 20px 24px;
         }
-
         state-card-content {
           display: block;
-          padding: 16px;
+          margin-bottom: 16px;
         }
-
-        more-info-content {
-          padding: 0 16px;
-        }
-
         pre {
           width: 400px;
-          margin: 16px;
+          margin: 0 16px;
           overflow: auto;
+          color: var(--primary-text-color);
         }
-
         @media only screen and (max-width: 800px) {
-          :host {
+          .root {
             flex-direction: column;
           }
           pre {
-            margin-left: 0;
+            margin: 16px 0;
           }
         }
       </style>
-      <ha-card>
-        <state-card-content
-          state-obj="[[_stateObj]]"
-          hass="[[hass]]"
-          in-dialog
-        ></state-card-content>
+      <div class="root">
+        <div id="card">
+          <ha-card>
+            <state-card-content
+              state-obj="[[_stateObj]]"
+              hass="[[hass]]"
+              in-dialog
+            ></state-card-content>
 
-        <more-info-content
-          hass="[[hass]]"
-          state-obj="[[_stateObj]]"
-        ></more-info-content>
-      </ha-card>
-      <template is="dom-if" if="[[showConfig]]">
-        <pre>[[_jsonEntity(_stateObj)]]</pre>
-      </template>
+            <more-info-content
+              hass="[[hass]]"
+              state-obj="[[_stateObj]]"
+            ></more-info-content>
+          </ha-card>
+        </div>
+        <template is="dom-if" if="[[showConfig]]">
+          <pre>[[_jsonEntity(_stateObj)]]</pre>
+        </template>
+      </div>
     `;
   }