add plugin filter editor

src/app/app.module.ts

@@ -82,6 +82,8 @@ import { ChangeUiTemplateComponent } from './dialogs/change-ui-template/change-u
 import { ReactiveFormsModule } from '@angular/forms';
 import { TemplateDetailsComponent } from './components-small/template-details/template-details.component';
 import { ExperimentWorkspaceDetailComponent } from './components/experiment-workspace-detail/experiment-workspace-detail.component';
+import { PluginFilterNodeComponent } from './components-small/plugin-filter-node/plugin-filter-node.component';
+import { PluginFilterEditorComponent } from './components-small/plugin-filter-editor/plugin-filter-editor.component';
 
 @NgModule({
     declarations: [
@@ -124,6 +126,8 @@ import { ExperimentWorkspaceDetailComponent } from './components/experiment-work
         TemplateDetailsComponent,
         ExperimentWorkspaceDetailComponent,
         ImportExperimentComponent,
+        PluginFilterNodeComponent,
+        PluginFilterEditorComponent,
     ],
     imports: [
         BrowserModule,

src/app/components-small/plugin-filter-editor/plugin-filter-editor.component.html

@@ -0,0 +1,52 @@
+<div class="filter-editor mat-elevation-z0">
+    <h3 class="editor-description">Filter Editor</h3>
+    <qhana-plugin-filter-node *ngIf="filterObject" [filterObject]="filterObject" (childChange)="updateFilter($event)"></qhana-plugin-filter-node>
+    <details>
+        <summary>Filter String Info</summary>
+
+        <i>Enter a filter string as JSON object. Filter strings have the following keys:</i>
+        <dl>
+            <dt>name</dt> <dd>Represents the name of a plugin.</dd>
+            <dt>tag</dt> <dd>Allows filtering elements by their assigned tags.</dd>
+            <dt>version</dt> <dd>Uses PEP 440 version specifier to filter elements based on specific versions or version ranges.</dd>
+            <dt>not</dt> <dd>Specifies a filter string to exclude certain elements.</dd>
+            <dt>and</dt> <dd>Includes multiple filter strings, with elements passing all conditions included in the filtered results (intersection).</dd>
+            <dt>or</dt> <dd>Includes multiple filter strings, with elements meeting at least one condition included in the filtered results (union).</dd>
+        </dl>
+        <mat-divider></mat-divider>
+        <p>Examples:</p>
+        <mat-form-field class="form-field">
+            <textarea class="filter-example" matInput disabled rows="3">
+{ 
+"name": "hello-world" 
+}
+            </textarea>
+        </mat-form-field>
+        <mat-form-field class="form-field">
+            <textarea class="filter-example" matInput disabled rows="3">
+{ 
+"not": { "name": "hello-world" } 
+}
+            </textarea>
+        </mat-form-field>
+        <mat-form-field class="form-field">
+            <textarea class="filter-example" matInput disabled rows="6">
+{ 
+"and": [
+    { "tag": "data-loading" },
+    { "version": ">=0.2.0" }
+]
+}
+            </textarea>
+        </mat-form-field>
+    </details>
+    <mat-form-field class="form-field">
+        <mat-label>Filter String:</mat-label>
+        <textarea matInput [formControl]="filterControl" cdkTextareaAutosize #autosize="cdkTextareaAutosize"
+            cdkAutosizeMinRows="1" cdkAutosizeMaxRows="20" (input)="updateFilterEditor()">
+        </textarea>
+        <button mat-raised-button class="copy-button" type="button" (click)="copyFilterString()">
+            <mat-icon>content_copy</mat-icon>
+        </button>
+    </mat-form-field>
+</div>

src/app/components-small/plugin-filter-editor/plugin-filter-editor.component.sass

@@ -0,0 +1,16 @@
+.form-field
+    width: 100%
+
+.copy-button
+    position: absolute
+    top: 0
+    right: 0
+
+.filter-editor
+    display: flex
+    flex-direction: column
+    gap: 1rem
+    padding-bottom: 0px
+
+.editor-description
+    margin: 0

src/app/components-small/plugin-filter-editor/plugin-filter-editor.component.spec.ts

@@ -0,0 +1,23 @@
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { PluginFilterEditorComponent } from './plugin-filter-editor.component';
+
+describe('PluginFilterEditorComponent', () => {
+  let component: PluginFilterEditorComponent;
+  let fixture: ComponentFixture<PluginFilterEditorComponent>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      declarations: [ PluginFilterEditorComponent ]
+    })
+    .compileComponents();
+
+    fixture = TestBed.createComponent(PluginFilterEditorComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

src/app/components-small/plugin-filter-editor/plugin-filter-editor.component.ts

@@ -0,0 +1,54 @@
+import { Component, Input, OnInit } from '@angular/core';
+import { FormControl, Validators } from '@angular/forms';
+import { ApiLink } from 'src/app/services/api-data-types';
+import { PluginRegistryBaseService } from 'src/app/services/registry.service';
+import { TemplateTabApiObject } from 'src/app/services/templates.service';
+
+@Component({
+    selector: 'qhana-plugin-filter-editor',
+    templateUrl: './plugin-filter-editor.component.html',
+    styleUrls: ['./plugin-filter-editor.component.sass']
+})
+export class PluginFilterEditorComponent implements OnInit {
+    @Input() tabLink: ApiLink | null = null;
+
+    filterString: string = "{}";
+    filterControl = new FormControl(this.filterString, [Validators.required, Validators.minLength(2)]);  // TODO: Add validator for JSON
+
+    filterObject: any = null;
+
+    constructor(private registry: PluginRegistryBaseService) { }
+
+    ngOnInit(): void {
+        if (this.tabLink == null) {
+            console.warn("No tab link provided to plugin filter node component");
+            return;
+        }
+        this.registry.getByApiLink<TemplateTabApiObject>(this.tabLink).then(response => {
+            this.filterString = response?.data?.filterString ?? this.filterString;
+            this.filterObject = JSON.parse(this.filterString);
+        });
+    }
+
+    updateFilter(event: [number, any]) {
+        const [index, value] = event;
+        this.filterObject = value;
+        this.filterString = JSON.stringify(this.filterObject, null, 2);
+        this.filterControl.setValue(this.filterString);
+    }
+
+    copyFilterString() {
+        navigator.clipboard.writeText(this.filterString);
+    }
+
+    updateFilterEditor() {
+        const filterValue = this.filterControl.value;
+        if (filterValue == null) {
+            return;
+        }
+        if (this.filterControl.valid) {
+            this.filterObject = JSON.parse(filterValue);
+            this.filterString = filterValue;
+        }
+    }
+}

src/app/components-small/plugin-filter-node/plugin-filter-node.component.html

@@ -0,0 +1,60 @@
+<mat-card class="filter-node mat-elevation-z0" [ngClass]="{'filter-leaf' : type === 'name' || type === 'tag' || type === 'version'}">
+    <mat-card-header>
+        <div class="config-header-buttons" *ngIf="isFilterEmpty()">
+            <button mat-raised-button type="button" (click)="setFilter('and')" color="primary">
+                <mat-icon>add</mat-icon>
+                Filter Set
+            </button>
+            <button mat-raised-button type="button" (click)="setFilter('name')" color="primary">
+                <mat-icon>add</mat-icon>
+                Filter
+            </button>
+        </div>
+        <ng-container *ngIf="children != null">
+            <div class="config-header">
+                <mat-button-toggle-group [value]="type" (valueChange)="changeType($event)">
+                    <mat-button-toggle value="and">AND</mat-button-toggle>
+                    <mat-button-toggle value="or">OR</mat-button-toggle>
+                </mat-button-toggle-group>
+                <div class="config-header-buttons">
+                    <button mat-raised-button *ngIf="depth < 2" type="button" (click)="addFilter('and')" color="primary">
+                        <mat-icon>add</mat-icon>
+                        Filter Set
+                    </button>
+                    <button mat-raised-button type="button" (click)="addFilter('name')" color="primary">
+                        <mat-icon>add</mat-icon>
+                        Filter
+                    </button>
+                    <button mat-raised-button type="button" (click)="deleteFilter()" color="warn">
+                        <mat-icon>delete</mat-icon>
+                    </button>
+                </div>
+            </div>
+        </ng-container>
+    </mat-card-header>
+    <mat-card-content>
+        <ng-container *ngIf="children != null">
+            <qhana-plugin-filter-node *ngFor="let child of children; let i = index" [filterObject]="children[i]" [index]="i" 
+                [depth]="depth + 1" (childChange)="updateChild($event)"></qhana-plugin-filter-node>
+        </ng-container>
+        <div class="config-filter" *ngIf="value != null">
+            <mat-form-field class="inner-form-field">
+                <mat-label>Filter Type:</mat-label>
+                <mat-select [value]="type" (valueChange)="changeType($event)">
+                    <mat-option value="name">Name</mat-option>
+                    <mat-option value="tag">Tag</mat-option>
+                    <mat-option value="version">Version</mat-option>
+                </mat-select>
+            </mat-form-field>
+            <mat-form-field class="form-field">
+                <mat-label>Filter String:</mat-label>
+                <textarea matInput [value]="value" (input)="updateFilterString($event)" cdkTextareaAutosize #autosize="cdkTextareaAutosize"
+                cdkAutosizeMinRows="1" cdkAutosizeMaxRows="15"></textarea>
+            </mat-form-field>
+            <button mat-raised-button type="button" (click)="deleteFilter()" color="warn">
+                <mat-icon>delete</mat-icon>
+            </button>
+        </div>
+        <mat-checkbox *ngIf="!isFilterEmpty()" [checked]="inverted" (change)="invertFilter()">Invert</mat-checkbox>
+    </mat-card-content>
+</mat-card>

src/app/components-small/plugin-filter-node/plugin-filter-node.component.sass

@@ -0,0 +1,51 @@
+.form-field
+    width: 100%
+
+.filter-node
+    border: 1px solid #7b7b7b
+
+.filter-node, .filter-node > mat-card-content
+    display: flex
+    flex-direction: column
+    justify-content: flex-start
+    gap: 10px
+    font-size: 12px
+
+.filter-leaf
+    padding: 8px 16px
+
+::ng-deep .mat-card-header-text
+    margin: 0px
+
+.config-header
+    width: 100%
+    display: flex
+    flex-direction: row
+    justify-content: space-between
+
+.config-header-buttons
+    display: flex
+    flex-direction: row
+    justify-content: flex-end
+    gap: 10px
+
+.config-header > mat-button-toggle-group
+    height: 32px
+
+.config-header > mat-button-toggle-group > mat-button-toggle
+    height: 32px
+    font-size: 12px
+    display: flex
+    align-items: center
+
+.config-filter
+    display: flex
+    flex-direction: row
+    justify-content: space-between
+    align-items: center
+    gap: 10px
+    font-size: 12px
+
+::ng-deep .config-filter > mat-form-field > .mat-form-field-wrapper
+    margin: 0px
+    padding: 0px

src/app/components-small/plugin-filter-node/plugin-filter-node.component.spec.ts

@@ -0,0 +1,23 @@
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { PluginFilterNodeComponent } from './plugin-filter-node.component';
+
+describe('PluginFilterNodeComponent', () => {
+  let component: PluginFilterNodeComponent;
+  let fixture: ComponentFixture<PluginFilterNodeComponent>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      declarations: [ PluginFilterNodeComponent ]
+    })
+    .compileComponents();
+
+    fixture = TestBed.createComponent(PluginFilterNodeComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});