added create-from functionality

src/app/process-page/form/process-parameters/parameter-select/parameter-select.component.html

@@ -0,0 +1,16 @@
+<div class="form-row mb-2 mx-0">
+    <select id="process-parameters"
+            class="form-control col"
+            name="parameter-{{index}}"
+            [(ngModel)]="selectedParameter"
+            #param="ngModel">
+        <option [ngValue]="undefined">Add a parameter...</option>
+        <option *ngFor="let param of parameters" [ngValue]="param.name">
+            {{param.nameLong || param.name}}
+        </option>
+    </select>
+    <ds-parameter-value-input [initialValue]="parameterValue.value" [parameter]="selectedScriptParameter" (updateValue)="selectedParameterValue = $event" class="d-block col" [index]="index"></ds-parameter-value-input>
+    <button *ngIf="removable" class="btn btn-light col-1 remove-button" (click)="removeParameter.emit(parameterValue);"><span class="fas fa-trash"></span></button>
+    <span *ngIf="!removable" class="col-1"></span>
+</div>
+

src/app/process-page/form/process-parameters/parameter-select/parameter-select.component.spec.ts

@@ -0,0 +1,71 @@
+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { ParameterSelectComponent } from './parameter-select.component';
+import { NO_ERRORS_SCHEMA } from '@angular/core';
+import { FormsModule } from '@angular/forms';
+import { ScriptParameter } from '../../../scripts/script-parameter.model';
+import { ScriptParameterType } from '../../../scripts/script-parameter-type.model';
+import { By } from '@angular/platform-browser';
+
+describe('ParameterSelectComponent', () => {
+  let component: ParameterSelectComponent;
+  let fixture: ComponentFixture<ParameterSelectComponent>;
+  let scriptParams: ScriptParameter[];
+
+  function init() {
+    scriptParams = [
+      Object.assign(
+        new ScriptParameter(),
+        {
+          name: '-a',
+          type: ScriptParameterType.BOOLEAN
+        }
+      ),
+      Object.assign(
+        new ScriptParameter(),
+        {
+          name: '-f',
+          type: ScriptParameterType.FILE
+        }
+      ),
+    ]
+  }
+  beforeEach(async(() => {
+    init();
+    TestBed.configureTestingModule({
+      imports: [FormsModule],
+      declarations: [ParameterSelectComponent],
+      schemas: [NO_ERRORS_SCHEMA]
+    })
+      .compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(ParameterSelectComponent);
+    component = fixture.componentInstance;
+
+    component.parameters = scriptParams;
+    component.removable = false;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+
+  it('should show the remove button when removable', () => {
+    component.removable = true;
+    fixture.detectChanges();
+
+    const button = fixture.debugElement.query(By.css('button.remove-button'));
+    expect(button).not.toBeNull();
+  });
+
+  it('should hide the remove button when not removable', () => {
+    component.removable = false;
+    fixture.detectChanges();
+
+    const button = fixture.debugElement.query(By.css('button.remove-button'));
+    expect(button).toBeNull();
+  });
+});

src/app/process-page/form/process-parameters/parameter-select/parameter-select.component.ts

@@ -0,0 +1,90 @@
+import { Component, EventEmitter, Input, OnInit, Output, Optional } from '@angular/core';
+import { ProcessParameter } from '../../../processes/process-parameter.model';
+import { ScriptParameter } from '../../../scripts/script-parameter.model';
+import { hasNoValue } from '../../../../shared/empty.util';
+import { ControlContainer, NgForm } from '@angular/forms';
+import { controlContainerFactory } from '../../process-form.component';
+
+/**
+ * Component to select a single parameter for a process
+ */
+@Component({
+  selector: 'ds-parameter-select',
+  templateUrl: './parameter-select.component.html',
+  styleUrls: ['./parameter-select.component.scss'],
+  viewProviders: [{
+    provide: ControlContainer,
+    useFactory: controlContainerFactory,
+    deps: [[new Optional(), NgForm]]
+  }]
+})
+export class ParameterSelectComponent {
+  @Input() index: number;
+
+  /**
+   * The current parameter value of the selected parameter
+   */
+  @Input() parameterValue: ProcessParameter = new ProcessParameter();
+
+  /**
+   * The available script parameters for the script
+   */
+  @Input() parameters: ScriptParameter[];
+
+  /**
+   * Whether or not this selected parameter can be removed from the list
+   */
+  @Input() removable: boolean;
+
+  /**
+   * Emits the parameter value when it's removed
+   */
+  @Output() removeParameter: EventEmitter<ProcessParameter> = new EventEmitter<ProcessParameter>();
+
+  /**
+   * Emits the updated parameter value when it changes
+   */
+  @Output() changeParameter: EventEmitter<ProcessParameter> = new EventEmitter<ProcessParameter>();
+
+  /**
+   * Returns the script parameter based on the currently selected name
+   */
+  get selectedScriptParameter(): ScriptParameter {
+    return this.parameters.find((parameter: ScriptParameter) => parameter.name === this.selectedParameter);
+  }
+
+  /**
+   * Return the currently selected parameter name
+   */
+  get selectedParameter(): string {
+    return this.parameterValue ? this.parameterValue.name : undefined;
+  }
+
+  /**
+   * Sets the currently selected parameter based on the provided parameter name
+   * Emits the new value from the changeParameter output
+   * @param value The parameter name to set
+   */
+  set selectedParameter(value: string) {
+    this.parameterValue.name = value;
+    this.selectedParameterValue = undefined;
+    this.changeParameter.emit(this.parameterValue);
+  }
+
+  /**
+   * Returns the currently selected parameter value
+   */
+  get selectedParameterValue(): any {
+    return this.parameterValue ? this.parameterValue.value : undefined;
+  }
+
+  /**
+   * Sets the currently selected value for the parameter
+   * Emits the new value from the changeParameter output
+   * @param value The parameter value to set
+   */
+  set selectedParameterValue(value: any) {
+    this.parameterValue.value = value;
+    this.changeParameter.emit(this.parameterValue);
+  }
+}

src/app/process-page/form/process-parameters/parameter-value-input/boolean-value-input/boolean-value-input.component.html

@@ -0,0 +1 @@
+<input type="hidden" value="true" name="boolean-value-{{index}}" id="boolean-value-{{index}}"/>

src/app/process-page/form/process-parameters/parameter-value-input/boolean-value-input/boolean-value-input.component.spec.ts

@@ -0,0 +1,32 @@
+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { BooleanValueInputComponent } from './boolean-value-input.component';
+import { DebugElement } from '@angular/core';
+import { By } from '@angular/platform-browser';
+
+describe('BooleanValueInputComponent', () => {
+  let component: BooleanValueInputComponent;
+  let fixture: ComponentFixture<BooleanValueInputComponent>;
+
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+      declarations: [BooleanValueInputComponent]
+    })
+      .compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(BooleanValueInputComponent);
+    component = fixture.componentInstance;
+    spyOn(component.updateValue, 'emit');
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+
+  it('should emit true onInit', () => {
+    expect(component.updateValue.emit).toHaveBeenCalledWith(true);
+  });
+});

src/app/process-page/form/process-parameters/parameter-value-input/boolean-value-input/boolean-value-input.component.ts

@@ -0,0 +1,21 @@
+import { Component, OnInit, Optional } from '@angular/core';
+import { ValueInputComponent } from '../value-input.component';
+import { ControlContainer, NgForm } from '@angular/forms';
+import { controlContainerFactory } from '../../../process-form.component';
+
+/**
+ * Represents the value of a boolean parameter
+ */
+@Component({
+  selector: 'ds-boolean-value-input',
+  templateUrl: './boolean-value-input.component.html',
+  styleUrls: ['./boolean-value-input.component.scss'],
+  viewProviders: [ { provide: ControlContainer,
+    useFactory: controlContainerFactory,
+    deps: [[new Optional(), NgForm]] } ]
+})
+export class BooleanValueInputComponent extends ValueInputComponent<boolean> implements OnInit {
+  ngOnInit() {
+    this.updateValue.emit(true)
+  }
+}

src/app/process-page/form/process-parameters/parameter-value-input/date-value-input/date-value-input.component.html

@@ -0,0 +1,7 @@
+<input required #string="ngModel" type="text" class="form-control" name="date-value-{{index}}" id="date-value-{{index}}" [ngModel]="value" (ngModelChange)="setValue($event)"/>
+<div *ngIf="string.invalid && (string.dirty || string.touched)"
+     class="alert alert-danger validation-error">
+    <div *ngIf="string.errors.required">
+        {{'process.new.parameter.string.required' | translate}}
+    </div>
+</div>

src/app/process-page/form/process-parameters/parameter-value-input/date-value-input/date-value-input.component.spec.ts

@@ -0,0 +1,70 @@
+import { async, ComponentFixture, fakeAsync, TestBed, tick } from '@angular/core/testing';
+
+import { DateValueInputComponent } from './date-value-input.component';
+import { FormsModule } from '@angular/forms';
+import { TranslateLoader, TranslateModule } from '@ngx-translate/core';
+import { By } from '@angular/platform-browser';
+import { TranslateLoaderMock } from '../../../../../shared/mocks/translate-loader.mock';
+
+describe('DateValueInputComponent', () => {
+  let component: DateValueInputComponent;
+  let fixture: ComponentFixture<DateValueInputComponent>;
+
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+      imports: [
+        FormsModule,
+        TranslateModule.forRoot({
+          loader: {
+            provide: TranslateLoader,
+            useClass: TranslateLoaderMock
+          }
+        })],
+      declarations: [DateValueInputComponent]
+    })
+      .compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(DateValueInputComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+
+  it('should not show a validation error if the input field was left untouched but left empty', () => {
+    const validationError = fixture.debugElement.query(By.css('.validation-error'));
+    expect(validationError).toBeFalsy();
+  });
+
+  it('should show a validation error if the input field was touched but left empty',  fakeAsync(() => {
+    component.value = '';
+    fixture.detectChanges();
+    tick();
+
+    const input = fixture.debugElement.query(By.css('input'));
+    input.triggerEventHandler('blur', null);
+
+    fixture.detectChanges();
+
+    const validationError = fixture.debugElement.query(By.css('.validation-error'));
+    expect(validationError).toBeTruthy();
+  }));
+
+  it('should not show a validation error if the input field was touched but not left empty', fakeAsync(() => {
+    component.value = 'testValue';
+    fixture.detectChanges();
+    tick();
+
+    const input = fixture.debugElement.query(By.css('input'));
+    input.triggerEventHandler('blur', null);
+
+    fixture.detectChanges();
+
+    const validationError = fixture.debugElement.query(By.css('.validation-error'));
+    expect(validationError).toBeFalsy();
+  }));
+});

src/app/process-page/form/process-parameters/parameter-value-input/date-value-input/date-value-input.component.ts

@@ -0,0 +1,32 @@
+import { Component, OnInit, Optional, Input } from '@angular/core';
+import { ValueInputComponent } from '../value-input.component';
+import { ControlContainer, NgForm } from '@angular/forms';
+import { controlContainerFactory } from '../../../process-form.component';
+
+/**
+ * Represents the user inputted value of a date parameter
+ */
+@Component({
+  selector: 'ds-date-value-input',
+  templateUrl: './date-value-input.component.html',
+  styleUrls: ['./date-value-input.component.scss'],
+  viewProviders: [ { provide: ControlContainer,
+    useFactory: controlContainerFactory,
+    deps: [[new Optional(), NgForm]] } ]
+})
+export class DateValueInputComponent extends ValueInputComponent<string> {
+  /**
+   * The current value of the date string
+   */
+  value: string;
+  @Input() initialValue;
+
+  ngOnInit() {
+    this.value = this.initialValue;
+  }
+
+  setValue(value) {
+    this.value = value;
+    this.updateValue.emit(value)
+  }
+}

src/app/process-page/form/process-parameters/parameter-value-input/file-value-input/file-value-input.component.html

@@ -0,0 +1,13 @@
+<label for="file-upload-{{index}}" class="d-flex align-items-center m-0">
+    <span class="btn btn-light">
+        {{'process.new.parameter.file.upload-button' | translate}}
+    </span>
+    <span class="file-name ml-1">{{fileObject?.name}}</span>
+</label>
+<input requireFile #file="ngModel" type="file" name="file-upload-{{index}}" id="file-upload-{{index}}" class="form-control-file d-none" [ngModel]="fileObject" (ngModelChange)="setFile($event)"/>
+<div *ngIf="file.invalid && (file.dirty || file.touched)"
+     class="alert alert-danger validation-error">
+    <div *ngIf="file.errors.required">
+        {{'process.new.parameter.file.required' | translate}}
+    </div>
+</div>

src/app/process-page/form/process-parameters/parameter-value-input/file-value-input/file-value-input.component.scss

@@ -0,0 +1,6 @@
+.file-name {
+    flex: 1;
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+}

src/app/process-page/form/process-parameters/parameter-value-input/file-value-input/file-value-input.component.spec.ts

@@ -0,0 +1,57 @@
+import { async, ComponentFixture, fakeAsync, TestBed, tick } from '@angular/core/testing';
+
+import { FormsModule, NgForm, ReactiveFormsModule } from '@angular/forms';
+import { TranslateLoader, TranslateModule } from '@ngx-translate/core';
+import { By } from '@angular/platform-browser';
+import { FileValueInputComponent } from './file-value-input.component';
+import { NO_ERRORS_SCHEMA } from '@angular/core';
+import { FileValueAccessorDirective } from '../../../../../shared/utils/file-value-accessor.directive';
+import { FileValidator } from '../../../../../shared/utils/require-file.validator';
+import { TranslateLoaderMock } from '../../../../../shared/mocks/translate-loader.mock';
+
+describe('FileValueInputComponent', () => {
+  let component: FileValueInputComponent;
+  let fixture: ComponentFixture<FileValueInputComponent>;
+
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+      imports: [
+        FormsModule,
+        TranslateModule.forRoot({
+          loader: {
+            provide: TranslateLoader,
+            useClass: TranslateLoaderMock
+          }
+        })],
+      declarations: [FileValueInputComponent, FileValueAccessorDirective, FileValidator],
+      schemas: [NO_ERRORS_SCHEMA]
+
+    })
+      .compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(FileValueInputComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+
+  it('should not show a validation error if the input field was left untouched but left empty', () => {
+    const validationError = fixture.debugElement.query(By.css('.validation-error'));
+    expect(validationError).toBeFalsy();
+  });
+
+  it('should show a validation error if the input field was touched but left empty',  () => {
+    const input = fixture.debugElement.query(By.css('input'));
+    input.triggerEventHandler('blur', null);
+
+    fixture.detectChanges();
+
+    const validationError = fixture.debugElement.query(By.css('.validation-error'));
+    expect(validationError).toBeTruthy();
+  });
+});

src/app/process-page/form/process-parameters/parameter-value-input/file-value-input/file-value-input.component.ts

@@ -0,0 +1,26 @@
+import { Component, Optional } from '@angular/core';
+import { ValueInputComponent } from '../value-input.component';
+import { ControlContainer, NgForm } from '@angular/forms';
+import { controlContainerFactory } from '../../../process-form.component';
+
+/**
+ * Represents the user inputted value of a file parameter
+ */
+@Component({
+  selector: 'ds-file-value-input',
+  templateUrl: './file-value-input.component.html',
+  styleUrls: ['./file-value-input.component.scss'],
+  viewProviders: [ { provide: ControlContainer,
+    useFactory: controlContainerFactory,
+    deps: [[new Optional(), NgForm]] } ]
+})
+export class FileValueInputComponent extends ValueInputComponent<File> {
+  /**
+   * The current value of the file
+   */
+  fileObject: File;
+  setFile(files) {
+    this.fileObject = files.length > 0 ? files[0] : undefined;
+    this.updateValue.emit(this.fileObject);
+  }
+}

src/app/process-page/form/process-parameters/parameter-value-input/parameter-value-input.component.html

@@ -0,0 +1,7 @@
+<div [ngSwitch]="parameter?.type">
+  <ds-string-value-input *ngSwitchCase="parameterTypes.STRING" [initialValue]="initialValue" (updateValue)="updateValue.emit($event)" [index]="index"></ds-string-value-input>
+  <ds-string-value-input *ngSwitchCase="parameterTypes.OUTPUT" [initialValue]="initialValue" (updateValue)="updateValue.emit($event)" [index]="index"></ds-string-value-input>
+  <ds-date-value-input *ngSwitchCase="parameterTypes.DATE" [initialValue]="initialValue" (updateValue)="updateValue.emit($event)" [index]="index"></ds-date-value-input>
+  <ds-file-value-input *ngSwitchCase="parameterTypes.FILE" (updateValue)="updateValue.emit($event)" [index]="index"></ds-file-value-input>
+  <ds-boolean-value-input *ngSwitchCase="parameterTypes.BOOLEAN" (updateValue)="updateValue.emit($event)" [index]="index"></ds-boolean-value-input>
+</div>

src/app/process-page/form/process-parameters/parameter-value-input/parameter-value-input.component.spec.ts

@@ -0,0 +1,105 @@
+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { ParameterValueInputComponent } from './parameter-value-input.component';
+import { ScriptParameter } from '../../../scripts/script-parameter.model';
+import { ScriptParameterType } from '../../../scripts/script-parameter-type.model';
+import { By } from '@angular/platform-browser';
+import { BooleanValueInputComponent } from './boolean-value-input/boolean-value-input.component';
+import { StringValueInputComponent } from './string-value-input/string-value-input.component';
+import { FileValueInputComponent } from './file-value-input/file-value-input.component';
+import { DateValueInputComponent } from './date-value-input/date-value-input.component';
+import { NO_ERRORS_SCHEMA } from '@angular/core';
+import { FormsModule } from '@angular/forms';
+import { TranslateLoader, TranslateModule } from '@ngx-translate/core';
+import { FileValueAccessorDirective } from '../../../../shared/utils/file-value-accessor.directive';
+import { FileValidator } from '../../../../shared/utils/require-file.validator';
+import { TranslateLoaderMock } from '../../../../shared/mocks/translate-loader.mock';
+
+describe('ParameterValueInputComponent', () => {
+  let component: ParameterValueInputComponent;
+  let fixture: ComponentFixture<ParameterValueInputComponent>;
+  let booleanParameter;
+  let stringParameter;
+  let fileParameter;
+  let dateParameter;
+  let outputParameter;
+
+  function init() {
+    booleanParameter = Object.assign(new ScriptParameter(), { type: ScriptParameterType.BOOLEAN });
+    stringParameter = Object.assign(new ScriptParameter(), { type: ScriptParameterType.STRING });
+    fileParameter = Object.assign(new ScriptParameter(), { type: ScriptParameterType.FILE });
+    dateParameter = Object.assign(new ScriptParameter(), { type: ScriptParameterType.DATE });
+    outputParameter = Object.assign(new ScriptParameter(), { type: ScriptParameterType.OUTPUT });
+  }
+
+  beforeEach(async(() => {
+    init();
+    TestBed.configureTestingModule({
+      imports: [
+        FormsModule,
+        TranslateModule.forRoot({
+          loader: {
+            provide: TranslateLoader,
+            useClass: TranslateLoaderMock
+          }
+        })],
+      declarations: [
+        ParameterValueInputComponent,
+        BooleanValueInputComponent,
+        StringValueInputComponent,
+        FileValueInputComponent,
+        DateValueInputComponent,
+        FileValueAccessorDirective,
+        FileValidator
+      ],
+      schemas: [NO_ERRORS_SCHEMA]
+    })
+      .compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(ParameterValueInputComponent);
+    component = fixture.componentInstance;
+    component.parameter = stringParameter;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+
+  it('should show a BooleanValueInputComponent when the parameter type is boolean', () => {
+    component.parameter = booleanParameter;
+    fixture.detectChanges();
+    const valueInput = fixture.debugElement.query(By.directive(BooleanValueInputComponent));
+    expect(valueInput).toBeTruthy();
+  });
+
+  it('should show a StringValueInputComponent when the parameter type is string', () => {
+    component.parameter = stringParameter;
+    fixture.detectChanges();
+    const valueInput = fixture.debugElement.query(By.directive(StringValueInputComponent));
+    expect(valueInput).toBeTruthy();
+  });
+
+  it('should show a FileValueInputComponent when the parameter type is file', () => {
+    component.parameter = fileParameter;
+    fixture.detectChanges();
+    const valueInput = fixture.debugElement.query(By.directive(FileValueInputComponent));
+    expect(valueInput).toBeTruthy();
+  });
+
+  it('should show a DateValueInputComponent when the parameter type is date', () => {
+    component.parameter = dateParameter;
+    fixture.detectChanges();
+    const valueInput = fixture.debugElement.query(By.directive(DateValueInputComponent));
+    expect(valueInput).toBeTruthy();
+  });
+
+  it('should show a StringValueInputComponent when the parameter type is output', () => {
+    component.parameter = outputParameter;
+    fixture.detectChanges();
+    const valueInput = fixture.debugElement.query(By.directive(StringValueInputComponent));
+    expect(valueInput).toBeTruthy();
+  });
+});

src/app/process-page/form/process-parameters/parameter-value-input/parameter-value-input.component.ts

@@ -0,0 +1,37 @@
+import { Component, EventEmitter, Input, OnChanges, OnInit, Optional, Output } from '@angular/core';
+import { ScriptParameterType } from '../../../scripts/script-parameter-type.model';
+import { ScriptParameter } from '../../../scripts/script-parameter.model';
+import { ControlContainer, NgForm } from '@angular/forms';
+import { controlContainerFactory } from '../../process-form.component';
+
+/**
+ * Component that renders the correct parameter value input based the script parameter's type
+ */
+@Component({
+  selector: 'ds-parameter-value-input',
+  templateUrl: './parameter-value-input.component.html',
+  styleUrls: ['./parameter-value-input.component.scss'],
+  viewProviders: [ { provide: ControlContainer,
+    useFactory: controlContainerFactory,
+    deps: [[new Optional(), NgForm]] } ]
+})
+export class ParameterValueInputComponent {
+  @Input() index: number;
+
+  /**
+   * The current script parameter
+   */
+  @Input() parameter: ScriptParameter;
+
+
+  @Input() initialValue: any;
+  /**
+   * Emits the value of the input when its updated
+   */
+  @Output() updateValue: EventEmitter<any> = new EventEmitter();
+
+  /**
+   * The available script parameter types
+   */
+  parameterTypes = ScriptParameterType;
+}

src/app/process-page/form/process-parameters/parameter-value-input/string-value-input/string-value-input.component.html

@@ -0,0 +1,7 @@
+<input required #string="ngModel" type="text" name="string-value-{{index}}" class="form-control" id="string-value-{{index}}" [ngModel]="value" (ngModelChange)="setValue($event)"/>
+<div *ngIf="string.invalid && (string.dirty || string.touched)"
+     class="alert alert-danger validation-error">
+    <div *ngIf="string.errors.required">
+        {{'process.new.parameter.string.required' | translate}}
+    </div>
+</div>

src/app/process-page/form/process-parameters/parameter-value-input/string-value-input/string-value-input.component.spec.ts

@@ -0,0 +1,72 @@
+import { async, ComponentFixture, fakeAsync, TestBed, tick } from '@angular/core/testing';
+
+import { FormsModule, NgForm } from '@angular/forms';
+import { TranslateLoader, TranslateModule } from '@ngx-translate/core';
+import { By } from '@angular/platform-browser';
+import { StringValueInputComponent } from './string-value-input.component';
+import { TranslateLoaderMock } from '../../../../../shared/mocks/translate-loader.mock';
+
+describe('StringValueInputComponent', () => {
+  let component: StringValueInputComponent;
+  let fixture: ComponentFixture<StringValueInputComponent>;
+
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+      imports: [
+        FormsModule,
+        TranslateModule.forRoot({
+          loader: {
+            provide: TranslateLoader,
+            useClass: TranslateLoaderMock
+          }
+        })],
+      declarations: [StringValueInputComponent],
+      providers: [
+      ]
+    })
+      .compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(StringValueInputComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+
+  it('should not show a validation error if the input field was left untouched but left empty', () => {
+    const validationError = fixture.debugElement.query(By.css('.validation-error'));
+    expect(validationError).toBeFalsy();
+  });
+
+  it('should show a validation error if the input field was touched but left empty', fakeAsync(() => {
+    component.value = '';
+    fixture.detectChanges();
+    tick();
+
+    const input = fixture.debugElement.query(By.css('input'));
+    input.triggerEventHandler('blur', null);
+
+    fixture.detectChanges();
+
+    const validationError = fixture.debugElement.query(By.css('.validation-error'));
+    expect(validationError).toBeTruthy();
+  }));
+
+  it('should not show a validation error if the input field was touched but not left empty', fakeAsync(() => {
+    component.value = 'testValue';
+    fixture.detectChanges();
+    tick();
+
+    const input = fixture.debugElement.query(By.css('input'));
+    input.triggerEventHandler('blur', null);
+
+    fixture.detectChanges();
+
+    const validationError = fixture.debugElement.query(By.css('.validation-error'));
+    expect(validationError).toBeFalsy();
+  }));
+});

src/app/process-page/form/process-parameters/parameter-value-input/string-value-input/string-value-input.component.ts

@@ -0,0 +1,32 @@
+import { Component, Optional, Input } from '@angular/core';
+import { ValueInputComponent } from '../value-input.component';
+import { ControlContainer, NgForm } from '@angular/forms';
+import { controlContainerFactory } from '../../../process-form.component';
+
+/**
+ * Represents the user inputted value of a string parameter
+ */
+@Component({
+  selector: 'ds-string-value-input',
+  templateUrl: './string-value-input.component.html',
+  styleUrls: ['./string-value-input.component.scss'],
+  viewProviders: [ { provide: ControlContainer,
+    useFactory: controlContainerFactory,
+    deps: [[new Optional(), NgForm]] } ]
+})
+export class StringValueInputComponent extends ValueInputComponent<string> {
+  /**
+   * The current value of the string
+   */
+  value: string;
+  @Input() initialValue;
+
+  ngOnInit() {
+    this.value = this.initialValue;
+  }
+  
+  setValue(value) {
+    this.value = value;
+    this.updateValue.emit(value)
+  }
+}

src/app/process-page/form/process-parameters/parameter-value-input/value-input.component.ts

@@ -0,0 +1,12 @@
+import { EventEmitter, Input, Output } from '@angular/core';
+
+/**
+ * Abstract class that represents value input components
+ */
+export abstract class ValueInputComponent<T> {
+  @Input() index: number;
+  /**
+   * Used by the subclasses to emit the value when it's updated
+   */
+  @Output() updateValue: EventEmitter<T> = new EventEmitter<T>()
+}

src/app/process-page/form/process-parameters/process-parameters.component.html

@@ -0,0 +1,11 @@
+<div class="form-group" *ngIf="script">
+    <label>{{'process.new.select-parameters' | translate}}</label>
+    <ds-parameter-select
+            *ngFor="let value of parameterValues; let i = index; let last = last"
+            [parameters]="script.parameters"
+            [parameterValue]="value"
+            [removable]="!last"
+            [index]="i"
+            (removeParameter)="removeParameter(i)"
+            (changeParameter)="updateParameter($event, i)"></ds-parameter-select>
+</div>

src/app/process-page/form/process-parameters/process-parameters.component.spec.ts

@@ -0,0 +1,64 @@
+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { ProcessParametersComponent } from './process-parameters.component';
+import { ProcessParameter } from '../../processes/process-parameter.model';
+import { By } from '@angular/platform-browser';
+import { ParameterSelectComponent } from './parameter-select/parameter-select.component';
+import { FormsModule } from '@angular/forms';
+import { TranslateLoader, TranslateModule } from '@ngx-translate/core';
+import { NO_ERRORS_SCHEMA } from '@angular/core';
+import { Script } from '../../scripts/script.model';
+import { ScriptParameter } from '../../scripts/script-parameter.model';
+import { TranslateLoaderMock } from '../../../shared/mocks/translate-loader.mock';
+
+describe('ProcessParametersComponent', () => {
+  let component: ProcessParametersComponent;
+  let fixture: ComponentFixture<ProcessParametersComponent>;
+  let parameterValues;
+  let script;
+
+  function init() {
+    const param1 = new ScriptParameter();
+    const param2 = new ScriptParameter();
+    script = Object.assign(new Script(), { parameters: [param1, param2] });
+    parameterValues = [
+      Object.assign(new ProcessParameter(), { name: '-a', value: 'bla' }),
+      Object.assign(new ProcessParameter(), { name: '-b', value: '123' }),
+      Object.assign(new ProcessParameter(), { name: '-c', value: 'value' }),
+    ]
+  }
+
+  beforeEach(async(() => {
+    init();
+    TestBed.configureTestingModule({
+      imports: [
+        FormsModule,
+        TranslateModule.forRoot({
+          loader: {
+            provide: TranslateLoader,
+            useClass: TranslateLoaderMock
+          }
+        })],
+      declarations: [ProcessParametersComponent, ParameterSelectComponent],
+      schemas: [NO_ERRORS_SCHEMA]
+    })
+      .compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(ProcessParametersComponent);
+    component = fixture.componentInstance;
+    component.script = script;
+    component.parameterValues = parameterValues;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+
+  it('should render a ParameterSelectComponent for each parameter value of the component', () => {
+    const selectComponents = fixture.debugElement.queryAll(By.directive(ParameterSelectComponent));
+    expect(selectComponents.length).toBe(parameterValues.length);
+  });
+});

src/app/process-page/form/process-parameters/process-parameters.component.ts

@@ -0,0 +1,109 @@
+import { Component, EventEmitter, Input, OnChanges, Optional, Output, SimpleChanges } from '@angular/core';
+import { Script } from '../../scripts/script.model';
+import { ProcessParameter } from '../../processes/process-parameter.model';
+import { hasValue } from '../../../shared/empty.util';
+import { ControlContainer, NgForm } from '@angular/forms';
+import { ScriptParameter } from '../../scripts/script-parameter.model';
+import { controlContainerFactory } from '../process-form.component';
+
+/**
+ * Component that represents the selected list of parameters for a script
+ */
+@Component({
+  selector: 'ds-process-parameters',
+  templateUrl: './process-parameters.component.html',
+  styleUrls: ['./process-parameters.component.scss'],
+  viewProviders: [{
+    provide: ControlContainer,
+    useFactory: controlContainerFactory,
+    deps: [[new Optional(), NgForm]]
+  }]
+})
+export class ProcessParametersComponent implements OnChanges {
+  /**
+   * The currently selected script
+   */
+  @Input() script: Script;
+  @Input() initialParams: ProcessParameter[];
+  /**
+   * Emits the parameter values when they're updated
+   */
+  @Output() updateParameters: EventEmitter<ProcessParameter[]> = new EventEmitter();
+
+  /**
+   * The current parameter values
+   */
+  parameterValues: ProcessParameter[];
+
+  ngOnInit() {
+    if (hasValue(this.initialParams)) {
+      this.parameterValues = this.initialParams;
+    }
+  }
+
+  /**
+   * Makes sure the parameters are reset when the script changes
+   * @param changes
+   */
+  ngOnChanges(changes: SimpleChanges): void {
+    if (changes.script) {
+      this.initParameters()
+    }
+  }
+
+  /**
+   * Empties the parameter values
+   * Initializes the first parameter value
+   */
+  initParameters() {
+    if (hasValue(this.initialParams)) {
+      this.parameterValues = this.initialParams;
+    } else {
+      this.parameterValues = [];
+      this.initializeParameter();
+    }
+  }
+
+  /**
+   * Updates a single parameter value using its new value and index
+   * Adds a new parameter when the last of the parameter values is changed
+   * @param processParameter The new value of the parameter
+   * @param index The index of the parameter
+   */
+  updateParameter(processParameter: ProcessParameter, index: number) {
+    this.parameterValues[index] = processParameter;
+    if (index === this.parameterValues.length - 1) {
+      this.addParameter();
+    }
+    this.updateParameters.emit(this.parameterValues.filter((param: ProcessParameter) => hasValue(param.name)));
+  }
+
+  /**
+   * Removes a parameter value from the list
+   * @param index The index of the parameter to remove
+   */
+  removeParameter(index: number) {
+    this.parameterValues = this.parameterValues.filter((value, i) => i !== index);
+  }
+
+  /**
+   * Initializes parameter values based on the selected script
+   */
+  initializeParameter() {
+    if (hasValue(this.script)) {
+      this.parameterValues = this.script.parameters
+        .filter((param) => param.mandatory)
+        .map(
+          (parameter: ScriptParameter) => Object.assign(new ProcessParameter(), { name: parameter.name })
+        );
+    }
+    this.addParameter();
+  }
+
+  /**
+   * Adds an empty parameter value to the end of the list
+   */
+  addParameter() {
+    this.parameterValues = [...this.parameterValues, new ProcessParameter()];
+  }
+}