Start adding editor, fix up sidebar styling

angular.json

@@ -18,18 +18,21 @@
             "outputPath": "dist/proto-creator",
             "index": "src/index.html",
             "browser": "src/main.ts",
-            "polyfills": [
+            "polyfills": [],
-            ],
             "tsConfig": "tsconfig.app.json",
             "assets": ["src/assets"],
-            "styles": ["src/styles.scss"]
+            "styles": [
+              "src/styles.scss",
+              "highlight.js/styles/atom-one-dark.min.css"
+            ],
+            "allowedCommonJsDependencies": ["protobufjs"]
           },
           "configurations": {
             "production": {
               "budgets": [
                 {
                   "type": "initial",
-                  "maximumWarning": "500kb",
+                  "maximumWarning": "700kb",
                   "maximumError": "1mb"
                 },
                 {
@@ -69,8 +72,7 @@
         "test": {
           "builder": "@angular-devkit/build-angular:karma",
           "options": {
-            "polyfills": [
+            "polyfills": [],
-            ],
             "tsConfig": "tsconfig.spec.json",
             "inlineStyleLanguage": "scss",
             "assets": [
@@ -79,9 +81,7 @@
                 "input": "public"
               }
             ],
-            "styles": [
+            "styles": ["src/styles.scss"],
-              "src/styles.scss"
-            ],
             "scripts": []
           }
         }

package.json

@@ -4,6 +4,7 @@
   "scripts": {
     "ng": "ng",
     "start": "ng serve",
+    "test": "ng test",
     "build": "ng build",
     "watch": "ng build --watch --configuration development",
     "tauri": "tauri"
@@ -21,6 +22,7 @@
     "@angular/platform-browser-dynamic": "^18.0.0",
     "@angular/router": "^18.0.0",
     "@tauri-apps/api": "^1.5.6",
+    "highlight.js": "^11.9.0",
     "protobufjs": "~7.3.0",
     "rxjs": "~7.8.0",
     "tslib": "^2.3.0",

src-tauri/src/main.rs

@@ -46,7 +46,7 @@ fn build_menu(app_name: &str) -> Menu {
     }
     let open_folder =
         CustomMenuItem::new("openfolder".to_string(), "Open Folder").accelerator("cmd+shift+O");
-    let file_submenu = Menu::new()
+    let mut file_submenu = Menu::new()
         .add_item(open_folder)
         .add_native_item(MenuItem::CloseWindow);
     #[cfg(not(target_os = "macos"))]

src/app/app.component.html

@@ -1,12 +1,42 @@
-<mat-toolbar data-tauri-drag-region color="secondary"
+<mat-toolbar data-tauri-drag-region color="secondary">
-  ><h1>BufPiv</h1></mat-toolbar
+  <h1>BufPiv</h1>
->
+  <span>
+    <button
+      mat-icon-button
+      (click)="leftSideOpen.set(!leftSideOpen())"
+      title="Toggle left drawer"
+    >
+      <mat-icon [class.filled]="leftSideOpen()">dock_to_right</mat-icon>
+    </button>
+    <button
+      mat-icon-button
+      (click)="rightSideOpen.set(!rightSideOpen())"
+      title="Toggle right drawer"
+    >
+      <mat-icon [class.filled]="rightSideOpen()">dock_to_left</mat-icon>
+    </button>
+  </span>
+</mat-toolbar>
 <mat-sidenav-container autosize>
   @if(selectedDirectory()) {
-  <mat-sidenav mode="side" opened>
+  <mat-sidenav
+    [mode]="isMobile() ? 'over' : 'side'"
+    [opened]="leftSideOpen()"
+    (closed)="leftSideOpen.set(false)"
+  >
     <app-file-tree [files]="files()"></app-file-tree>
   </mat-sidenav>
   }
+  <mat-sidenav
+    [opened]="rightSideOpen()"
+    [mode]="isMobile() ? 'over' : 'side'"
+    position="end"
+    (closed)="rightSideOpen.set(false)"
+  >
+    <app-proto-definition-selector
+      (messageSelected)="selectMessage($event)"
+    ></app-proto-definition-selector>
+  </mat-sidenav>
   <mat-sidenav-content>
     @if (!selectedDirectory()) {
     <div
@@ -21,7 +51,8 @@
         Open Folder
       </button>
     </div>
-    }@else { }
+    }@else {
+    <app-editor [selectedMessage]="selectedMessage()"></app-editor>
+    }
   </mat-sidenav-content>
-  <!-- TODO: Proto selector (add/remove proto definitinos, select definition for current file) on right side -->
 </mat-sidenav-container>

src/app/app.component.scss

@@ -8,8 +8,18 @@ mat-toolbar {
   flex: 0 0 auto;
   padding-top: 24px;
   --mat-toolbar-standard-height: 70px;
+  display: flex;
+  justify-content: space-between;
 }
 mat-sidenav-container {
   width: 100%;
   height: 100%;
 }
+
+.mat-sidenav.mat-drawer-end {
+  padding: var(--mat-sidenav-container-shape);
+}
+
+.mat-icon.filled {
+  font-variation-settings: "FILL" 1, "wght" 400, "GRAD" 0, "opsz" 24;
+}

src/app/app.component.ts

@@ -1,19 +1,25 @@
+import { BreakpointObserver, Breakpoints } from '@angular/cdk/layout';
 import { CommonModule } from '@angular/common';
 import { Component, signal } from '@angular/core';
+import { takeUntilDestroyed } from '@angular/core/rxjs-interop';
 import { MatButtonModule } from '@angular/material/button';
+import { MatIconModule } from '@angular/material/icon';
 import { MatSidenavModule } from '@angular/material/sidenav';
-import { RouterOutlet } from '@angular/router';
-import { message, open } from '@tauri-apps/api/dialog';
-import { FileEntry, readDir } from '@tauri-apps/api/fs';
 import { MatToolbarModule } from '@angular/material/toolbar';
 import { MatTreeModule } from '@angular/material/tree';
+import { RouterOutlet } from '@angular/router';
+import { message, open } from '@tauri-apps/api/dialog';
+import { UnlistenFn, listen } from '@tauri-apps/api/event';
+import { FileEntry, readDir } from '@tauri-apps/api/fs';
+import { EditorComponent } from './editor/editor.component';
 import {
   FileOrFolder,
   FileTreeComponent,
 } from './file-tree/file-tree.component';
-import { MatIconModule } from '@angular/material/icon';
-import { listen, UnlistenFn } from '@tauri-apps/api/event';
 import { OpenFolderMessage } from './messages/openfolder.message';
+import { ProtoMessage } from './model/proto-message.model';
+import { ProtoDefinitionSelectorComponent } from './proto-definition-selector/proto-definition-selector.component';
+const mobileBreakpoints = [Breakpoints.Handset, Breakpoints.TabletPortrait];
 
 @Component({
   selector: 'app-root',
@@ -29,14 +35,30 @@ import { OpenFolderMessage } from './messages/openfolder.message';
     MatTreeModule,
     FileTreeComponent,
     MatIconModule,
+    EditorComponent,
+    ProtoDefinitionSelectorComponent,
   ],
 })
 export class AppComponent {
   protected selectedDirectory = signal<string | null>(null);
   protected files = signal<FileOrFolder[]>([]);
+  protected selectedMessage = signal<ProtoMessage | undefined>(undefined);
+  protected rightSideOpen = signal(true);
+  protected leftSideOpen = signal(true);
 
   private unlisten?: UnlistenFn;
 
+  protected isMobile = signal(
+    this.breakpointObserver.isMatched(mobileBreakpoints)
+  );
+
+  constructor(private breakpointObserver: BreakpointObserver) {
+    breakpointObserver
+      .observe(mobileBreakpoints)
+      .pipe(takeUntilDestroyed())
+      .subscribe((matches) => this.isMobile.set(matches.matches));
+  }
+
   async ngOnInit() {
     this.unlisten = await listen(
       'openfolder',
@@ -83,9 +105,14 @@ export class AppComponent {
       children: entry.children
         ?.sort(this.sortFiles(splitNumbers))
         .map((entry) => this.mapEntry(entry, splitNumbers)),
+      path: entry.path,
     };
   }
 
   private sortFiles = (splitNumbers: RegExp) => (a: FileEntry, b: FileEntry) =>
     a.name?.localeCompare(b.name ?? '') ?? 0;
+
+  protected selectMessage(message: ProtoMessage) {
+    this.selectedMessage.set(message);
+  }
 }

src/app/app.config.ts

@@ -1,4 +1,5 @@
 import {
+  APP_INITIALIZER,
   ApplicationConfig,
   provideExperimentalZonelessChangeDetection,
 } from '@angular/core';
@@ -6,11 +7,39 @@ import { provideRouter } from '@angular/router';
 
 import { provideAnimationsAsync } from '@angular/platform-browser/animations/async';
 import { routes } from './app.routes';
+import hljs from 'highlight.js/lib/core';
+import json from 'highlight.js/lib/languages/json';
+import {
+  MAT_ICON_DEFAULT_OPTIONS,
+  MatIconRegistry,
+} from '@angular/material/icon';
 
 export const appConfig: ApplicationConfig = {
   providers: [
     provideExperimentalZonelessChangeDetection(),
     provideRouter(routes),
     provideAnimationsAsync(),
+    {
+      provide: APP_INITIALIZER,
+      useValue: () => {
+        hljs.registerLanguage('json', json);
+      },
+      multi: true,
+    },
+    {
+      provide: APP_INITIALIZER,
+      useFactory: (iconRegistry: MatIconRegistry) => () => {
+        iconRegistry.registerFontClassAlias(
+          'material-symbols-rounded',
+          'material-symbols-rounded'
+        );
+      },
+      deps: [MatIconRegistry],
+      multi: true,
+    },
+    {
+      provide: MAT_ICON_DEFAULT_OPTIONS,
+      useValue: { fontSet: 'material-symbols-rounded' },
+    },
   ],
 };

src/app/editor/editor.component.css

@@ -1,3 +0,0 @@
-:host {
-  display: block;
-}

src/app/editor/editor.component.html

@@ -1 +1,3 @@
-<textarea [(ngModel)]="fileContents" disabled></textarea>
+<!-- <div>@for (item of items; track $index) {} @switch () {}</div> -->
+
+<pre><code class="language-json" #code>{{fileContents()}}</code></pre>

src/app/editor/editor.component.scss

@@ -1,3 +0,0 @@
-:host {
-  display: block;
-}

src/app/editor/editor.component.ts

@@ -1,8 +1,9 @@
 import { CommonModule } from '@angular/common';
-import { Component, input } from '@angular/core';
+import { Component, ElementRef, effect, input, viewChild } from '@angular/core';
 import { FormsModule } from '@angular/forms';
-import { readTextFile } from '@tauri-apps/api/fs';
+import hljs from 'highlight.js/lib/core';
-import { parse } from 'protobufjs';
+import { ProtoMessage } from '../model/proto-message.model';
+import { ProtoDefinitionService } from '../proto-definition.service';
 
 @Component({
   selector: 'app-editor',
@@ -13,18 +14,15 @@ import { parse } from 'protobufjs';
 })
 export class EditorComponent {
   fileContents = input<string>();
-  selectedProtoPath = input<string>();
+  selectedMessage = input<ProtoMessage>();
+  private code = viewChild<ElementRef<HTMLElement>>('code');
 
-  async loadProtoDefinition() {
+  constructor(private protoDefinitionService: ProtoDefinitionService) {
-    try {
+    effect(() => {
-      const protoPath = this.selectedProtoPath();
+      const element = this.code()?.nativeElement;
-      if (protoPath) {
+      if (element) {
-        const protoContents = await readTextFile(protoPath);
+        hljs.highlightElement(element);
-        const definition = await parse(protoContents);
-        console.log(definition);
-      }
-    } catch (err) {
-      console.error(err);
       }
+    });
   }
 }

src/app/file-tree/file-tree.component.css

@@ -1,3 +0,0 @@
-:host {
-  display: block;
-}

src/app/file-tree/file-tree.component.html

@@ -0,0 +1,23 @@
+<mat-tree [dataSource]="dataSource()" [treeControl]="treeControl">
+  <mat-tree-node
+    *matTreeNodeDef="let node"
+    matTreeNodePadding
+    (click)="fileSelected.emit(node.file)"
+  >
+    <button mat-icon-button disabled></button>
+    {{ node.file.name }}
+  </mat-tree-node>
+  <mat-tree-node *matTreeNodeDef="let node; when: hasChild" matTreeNodeToggle>
+    <button
+      mat-icon-button
+      matTreeNodePadding
+      [attr.aria-label]="'Toggle ' + node.file.name"
+    >
+      <mat-icon class="mat-icon-rtl-mirror">
+        @if (treeControl.isExpanded(node)) { expand_more } @else { chevron_right
+        }
+      </mat-icon>
+    </button>
+    {{ node.file.name }}
+  </mat-tree-node>
+</mat-tree>

src/app/file-tree/file-tree.component.ts

@@ -19,6 +19,7 @@ export interface FileOrFolder {
   isDirectory: boolean;
   name: string;
   children?: FileOrFolder[];
+  path: string;
 }
 
 interface FileNode {
@@ -31,29 +32,7 @@ interface FileNode {
   selector: 'app-file-tree',
   standalone: true,
   imports: [CommonModule, MatTreeModule, MatIconModule, MatButtonModule],
-  template: `<mat-tree [dataSource]="dataSource()" [treeControl]="treeControl">
+  templateUrl: './file-tree.component.html',
-    <mat-tree-node
-      *matTreeNodeDef="let node"
-      matTreeNodePadding
-      (click)="fileSelected.emit(node.file)"
-    >
-      <button mat-icon-button disabled></button>
-      {{ node.file.name }}
-    </mat-tree-node>
-    <mat-tree-node *matTreeNodeDef="let node; when: hasChild" matTreeNodeToggle>
-      <button
-        mat-icon-button
-        matTreeNodePadding
-        [attr.aria-label]="'Toggle ' + node.file.name"
-      >
-        <mat-icon class="mat-icon-rtl-mirror">
-          @if (treeControl.isExpanded(node)) { expand_more } @else {
-          chevron_right }
-        </mat-icon>
-      </button>
-      {{ node.file.name }}
-    </mat-tree-node>
-  </mat-tree>`,
   styleUrl: './file-tree.component.scss',
 })
 export class FileTreeComponent {

src/app/model/proto-message.model.ts

@@ -0,0 +1,19 @@
+export enum MessageType {
+  String,
+  Boolean,
+  Numeric,
+  List,
+  Map,
+  Object,
+}
+
+export interface ProtoMessageField {
+  name: string;
+  type: MessageType;
+  value: any;
+}
+
+export interface ProtoMessage {
+  name: string;
+  values: ProtoMessageField[];
+}

src/app/proto-definition-selector/proto-definition-selector.component.css

@@ -0,0 +1,16 @@
+:host {
+  display: block;
+  border-radius: var(--mat-sidenav-container-shape);
+  padding: var(--mat-sidenav-container-shape);
+  height: 100%;
+  box-sizing: border-box;
+  transition: background-color 100ms linear;
+}
+
+:host.droppable * {
+  pointer-events: none;
+}
+
+input {
+  display: none;
+}

src/app/proto-definition-selector/proto-definition-selector.component.ts

@@ -0,0 +1,127 @@
+import { MediaMatcher } from '@angular/cdk/layout';
+import { CommonModule } from '@angular/common';
+import {
+  ChangeDetectionStrategy,
+  ChangeDetectorRef,
+  Component,
+  ElementRef,
+  HostBinding,
+  HostListener,
+  OnDestroy,
+  output,
+  signal,
+  viewChild,
+} from '@angular/core';
+import { MatListModule } from '@angular/material/list';
+import { ProtoMessage } from '../model/proto-message.model';
+import { ProtoDefinitionService } from '../proto-definition.service';
+import { MatButtonModule } from '@angular/material/button';
+
+@Component({
+  selector: 'app-proto-definition-selector',
+  standalone: true,
+  imports: [CommonModule, MatListModule, MatButtonModule],
+  template: `
+    <h2>Protobuf Definitions</h2>
+    <mat-list>
+      @for (item of definitionFiles(); track $index) {
+      <mat-list-item (click)="selectProtoDefinition(item)">{{
+        item.name
+      }}</mat-list-item>
+      }
+    </mat-list>
+    <button mat-button (click)="protoSelector.click()">
+      Select definitions
+    </button>
+    <input
+      #protoSelector
+      type="file"
+      (change)="addDefinitionFiles()"
+      accept=".proto"
+    />
+    <mat-list>
+      @for (item of selectedDefinition(); track $index) {
+      <mat-list-item (click)="messageSelected.emit(item)">{{
+        item.name
+      }}</mat-list-item>
+      }
+    </mat-list>
+    <!-- TODO: more detail when dragging over so user knows they can drop the file -->
+  `,
+  styleUrl: './proto-definition-selector.component.css',
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class ProtoDefinitionSelectorComponent {
+  protoSelector = viewChild<ElementRef<HTMLInputElement>>('protoSelector');
+  messageSelected = output<ProtoMessage>();
+
+  protected definitionFiles = signal<File[]>([]);
+  protected selectedDefinition = signal<ProtoMessage[]>([]);
+  protected isDragging = signal(false);
+
+  private currentFiles: string[] = [];
+
+  @HostBinding('class.droppable')
+  get droppable() {
+    return this.isDragging();
+  }
+
+  constructor(
+    private protoDefinitionService: ProtoDefinitionService,
+    private elementRef: ElementRef
+  ) {}
+
+  protected async addDefinitionFiles() {
+    const files = this.protoSelector()?.nativeElement.files;
+    if (files) {
+      const definitionFiles = this.definitionFiles();
+      for (let i = 0; i < files.length; i++) {
+        if (!this.currentFiles.includes(files[i].name)) {
+          definitionFiles.push(files[i]);
+          this.currentFiles.push(files[i].name);
+        }
+      }
+      this.definitionFiles.set(definitionFiles);
+    }
+  }
+
+  protected async selectProtoDefinition(file: File) {
+    try {
+      const protoContents = await file.text();
+      const messageObjects =
+        await this.protoDefinitionService.parseProtoDefinition(protoContents);
+      this.selectedDefinition.set(messageObjects);
+    } catch (err) {
+      console.error(err);
+      alert(
+        "Failed to parse protobuf definition, please check it's a valid file."
+      );
+    }
+  }
+
+  @HostListener('dragover', ['$event'])
+  onDrag(event: DragEvent) {
+    event.preventDefault();
+  }
+
+  @HostListener('drop', ['$event'])
+  onDrop(event: DragEvent) {
+    event.preventDefault();
+    const protoSelector = this.protoSelector();
+    if (protoSelector) {
+      protoSelector.nativeElement.files = event.dataTransfer?.files ?? null;
+    }
+    this.isDragging.set(false);
+    this.addDefinitionFiles();
+  }
+
+  @HostListener('dragenter')
+  onDragEnter() {
+    this.isDragging.set(true);
+  }
+
+  @HostListener('dragleave', ['$event'])
+  onDragLeave(event: DragEvent) {
+    if (event.target) this.isDragging.set(false);
+  }
+}

src/app/proto-definition.service.spec.ts

@@ -0,0 +1,57 @@
+import { TestBed } from '@angular/core/testing';
+
+import { provideExperimentalZonelessChangeDetection } from '@angular/core';
+import { MessageType, ProtoMessage } from './model/proto-message.model';
+import { ProtoDefinitionService } from './proto-definition.service';
+
+let testProto = `
+syntax="proto3";
+
+message Test {
+    string hello = 1;
+    int32 hello2 = 2;
+    int64 hello3 = 3;
+    float hello4 = 4;
+    double hello5 = 5;
+    bool hello6 = 6;
+    repeated string hello7 = 7;
+    map<string, string> hello8 = 8;
+}
+`;
+
+describe('TestService', () => {
+  let service: ProtoDefinitionService;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({
+      providers: [provideExperimentalZonelessChangeDetection()],
+    });
+    service = TestBed.inject(ProtoDefinitionService);
+  });
+
+  it('should convert parse protobuf correctly', async () => {
+    const testMessages = await service.parseProtoDefinition(testProto);
+    const converted = testMessages[0];
+
+    expect(converted.name).toBe('Test');
+
+    expect(converted.values.length).toBe(8);
+    checkNameAndType(converted, 'hello', MessageType.String);
+    checkNameAndType(converted, 'hello2', MessageType.Numeric);
+    checkNameAndType(converted, 'hello3', MessageType.Numeric);
+    checkNameAndType(converted, 'hello4', MessageType.Numeric);
+    checkNameAndType(converted, 'hello5', MessageType.Numeric);
+    checkNameAndType(converted, 'hello6', MessageType.Boolean);
+    checkNameAndType(converted, 'hello7', MessageType.List);
+    checkNameAndType(converted, 'hello8', MessageType.Map);
+  });
+});
+
+const checkNameAndType = (
+  converted: ProtoMessage,
+  name: string,
+  type: MessageType
+) => {
+  const field = converted.values.find((value) => value.name === name);
+  expect(field?.type).toBe(type);
+};

src/app/proto-definition.service.ts

@@ -0,0 +1,70 @@
+import { Injectable } from '@angular/core';
+import { FieldBase, MapField, ReflectionObject, parse } from 'protobufjs';
+import { MessageType, ProtoMessage } from './model/proto-message.model';
+
+@Injectable({
+  providedIn: 'root',
+})
+export class ProtoDefinitionService {
+  constructor() {}
+
+  async parseProtoDefinition(protoContents: string): Promise<ProtoMessage[]> {
+    const definition = await parse(protoContents);
+    const messages = definition.root.nested;
+    if (messages) {
+      const objectDefinitions = Object.values(messages);
+      const messageObjects = [];
+      for (const objectDefinition of objectDefinitions) {
+        // TODO: Better way to check for message type (i.e. not enum)?
+        if ('fieldsArray' in objectDefinition) {
+          messageObjects.push(
+            this.convertProtoDefinitionToModel(objectDefinition)
+          );
+        }
+      }
+      return messageObjects;
+    }
+    return [];
+  }
+
+  private convertProtoDefinitionToModel(
+    messageDefinition?: ReflectionObject
+  ): ProtoMessage {
+    if (messageDefinition && 'fieldsArray' in messageDefinition) {
+      const convertedFields: ProtoMessage = {
+        name: messageDefinition.name,
+        values: [],
+      };
+      const fields = messageDefinition.fieldsArray as FieldBase[];
+      // TODO: Needs to be a visitor/tree search since messages/enums may be nested
+      for (const field of fields) {
+        // TODO: Better way to check this?
+        if ('rule' in field && field.rule === 'repeated') {
+          // Repeated/list field
+        } else if (field instanceof MapField) {
+          // Map
+        } else {
+          switch (field.type) {
+            case 'string':
+              break;
+            case 'int32':
+            case 'int64':
+            case 'float':
+            case 'double':
+              break;
+            case 'bool':
+              break;
+            // TODO: bytes as well, though that's pretty useless (can't really represent/edit it?)
+          }
+        }
+        convertedFields.values.push({
+          name: field.name,
+          type: MessageType.String,
+          value: '',
+        });
+      }
+      return convertedFields;
+    }
+    throw 'ReflectionObject is not a message';
+  }
+}

src/index.html

@@ -1,15 +1,21 @@
 <!DOCTYPE html>
 <html lang="en">
-<head>
+  <head>
-  <meta charset="utf-8">
+    <meta charset="utf-8" />
     <title>Test</title>
-  <base href="/">
+    <base href="/" />
-  <meta name="viewport" content="width=device-width, initial-scale=1">
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
-  <link rel="icon" type="image/x-icon" href="favicon.ico">
+    <link rel="icon" type="image/x-icon" href="favicon.ico" />
-  <link href="https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;500&display=swap" rel="stylesheet">
+    <link
-  <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
+      href="https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;500&display=swap"
-</head>
+      rel="stylesheet"
-<body class="mat-typography">
+    />
+    <link
+      href="https://fonts.googleapis.com/css2?family=Material+Symbols+Rounded:opsz,wght,FILL,GRAD@20..48,100..700,0..1,-50..200"
+      rel="stylesheet"
+    />
+  </head>
+  <body class="mat-typography">
     <app-root></app-root>
-</body>
+  </body>
 </html>

src/styles.scss

@@ -5,7 +5,16 @@
 
 @mixin custom-colours($theme) {
   .mat-toolbar {
-    background-color: mat.get-theme-color($theme, primary-container);
+    background-color: mat.get-theme-color($theme, tertiary-container);
+  }
+
+  app-proto-definition-selector {
+    background-color: mat.get-theme-color($theme, secondary-container);
+    transition: background-color 100ms linear;
+  }
+
+  .droppable {
+    background-color: mat.get-theme-color($theme, secondary, 40);
   }
 }
 

test.proto

@@ -0,0 +1,12 @@
+syntax="proto3";
+
+message Test {
+    string hello = 1;
+    int32 hello2 = 2;
+    int64 hello3 = 3;
+    float hello4 = 4;
+    double hello5 = 5;
+    bool hello6 = 6;
+    repeated string hello7 = 7;
+    map<string, string> hello8 = 8;
+}