fix: Filter model is now FilterConstructor and shouldn't be newed

- the Filter `model` prop should be a constructor and it shouldn't newed (instantiated), it was defined like so in the docs and Wikis but that was actually wrong
- ref Slickgrid-Universal [PR 1430](ghiscoding/slickgrid-universal#1430)

docs/column-functionalities/filters/custom-filter.md

@@ -16,21 +16,21 @@ You can also create your own Custom Filter with any html/css you want and/or jQu
 #### Limitations
 - as mentioned in the description, only html/css and/or jQuery libraries are supported.
   - this mainly mean that Angular templates (components) are not supported (feel free to contribute).
-- SlickGrid uses `table-cell` as CSS for it to display a consistent height for each rows (this keeps the same row height/line-height to always be the same). 
+- SlickGrid uses `table-cell` as CSS for it to display a consistent height for each rows (this keeps the same row height/line-height to always be the same).
   - all this to say that you might be in a situation were your filter shows in the back of the grid. The best approach to overcome this is to use a modal if you can or if the library support `append to body container`. For example, you can see that `multiple-select-vanilla` supports a `container`
 
 ### How to use Custom Filter?
-1. You first need to create a `class` using the [Filter interface](https://github.com/ghiscoding/slickgrid-universal/blob/master/packages/common/src/interfaces/filter.interface.ts). Make sure to create all necessary public properties and functions. 
+1. You first need to create a `class` using the [Filter interface](https://github.com/ghiscoding/slickgrid-universal/blob/master/packages/common/src/interfaces/filter.interface.ts). Make sure to create all necessary public properties and functions.
  - You can see a demo with a [custom-inputFilter.ts](https://github.com/ghiscoding/angular-slickgrid/blob/master/src/app/examples/custom-inputFilter.ts) that is used in the [demo - example 4](https://ghiscoding.github.io/Angular-Slickgrid/#/clientside)
-2. Simply set the `columnDefinition.filter.model` to your new custom Filter class and instantiate it with `new` (you can also use dependency injection in the constructor if you wish). Here is an example with a custom input filter: 
-```typescript 
+2. Simply set the `columnDefinition.filter.model` to your new custom Filter class and instantiate it with `new` (you can also use dependency injection in the constructor if you wish). Here is an example with a custom input filter:
+```typescript
 // define you columns, in this demo Effort Driven will use a Select Filter
-this.columnDefinitions = [      
+this.columnDefinitions = [
   { id: 'title', name: 'Title', field: 'title' },
   { id: 'description', name: 'Description', field: 'description', type: FieldType.string,
-    filterable: true, 
+    filterable: true,
     filter: {
-       model: new CustomInputFilter() // create a new instance to make each Filter independent from each other
+       model: CustomInputFilter // create a new instance to make each Filter independent from each other
     }
   }
 ];
@@ -47,7 +47,7 @@ If you want to load the grid with certain default filter(s), you can use the fol
 
 For example, setting a default value into an `input` element, you can simply get the search term with `columnDef.filter.searchTerms` and set the default value in jquery with `$(filterElm).val(this.searchTerms);`
 
-### Collection 
+### Collection
 If you want to pass a `collection` to your filter (for example, a multiple-select needs a select list of options), you can then use it in your custom filter through `columnDef.filter.collection`
 
 #### `key/label` pair
@@ -61,7 +61,7 @@ this.columnDef.filter.collection.forEach((option: SelectOption) => {
 ```
 
 #### Custom Structure (key/label pair)
-What if your `collection` have totally different value/label pair? In this case, you can use the `customStructure` to change the property name(s) to use. You can change the label and/or the value, they can be passed independently. 
+What if your `collection` have totally different value/label pair? In this case, you can use the `customStructure` to change the property name(s) to use. You can change the label and/or the value, they can be passed independently.
 For example:
 ```typescript
 // use custom structure value/label pair
@@ -80,7 +80,7 @@ this.columnDef.filter.collection.forEach((option: SelectOption) => {
 By default a `collection` uses the `label/value` pair without translation or `labelKey/value` pair with translation usage. So if you want to use translations, then you can loop through your `collection` and use the `labelKey/value` properties. For example:
 ```typescript
 this.columnDef.filter.collection.forEach((option: SelectOption) => {
-  // translate label      
+  // translate label
   const textLabel = (option.labelKey && typeof this.i18n.tr === 'function') ? this.i18n.tr(option.labelKey || ' ') : option.labelKey;
 
   // use the option value & translated label
@@ -98,7 +98,7 @@ const labelName = (this.columnDef.filter.customStructure) ? this.columnDef.filte
 const valueName = (this.columnDef.filter.customStructure) ? this.columnDef.filter.customStructure.value : 'value';
 
 this.columnDef.filter.collection.forEach((option: SelectOption) => {
-  // translate label      
+  // translate label
   const textLabel = (option.labelKey && typeof this.i18n.tr === 'function') ? this.i18n.tr(option[labelName] || ' ') : option[labelName];
 
   // use the option value & translated label
@@ -109,7 +109,7 @@ this.columnDef.filter.collection.forEach((option: SelectOption) => {
 ## Custom Filter with Angular Components
 You can see them in [Example 22](https://ghiscoding.github.io/Angular-Slickgrid/#/angular-components) which have both Custom Editors & Filters which uses Angular Components. The 2nd column "Assignee" is the column that uses both (it uses `ng-select` 3rd party lib wrapped in an Angular Components [here](https://github.com/ghiscoding/angular-slickgrid/blob/master/src/app/examples/filter-ng-select.component.ts)) and you need to create a Custom Filter like [here](https://github.com/ghiscoding/angular-slickgrid/blob/master/src/app/examples/custom-angularComponentFilter.ts) and use that Custom Filter in your column definition like [here](https://github.com/ghiscoding/angular-slickgrid/blob/master/src/app/examples/grid-angular.component.ts#L109).
 
-Personally I don't find this very straightforward and I don't recommend using Angular Components for Editors/Filters as it adds a lot of boilerplate (compare to 1 step with a jQuery Custom Filter) but if you really wish to go that route, it's now possible following the steps shown below. 
+Personally I don't find this very straightforward and I don't recommend using Angular Components for Editors/Filters as it adds a lot of boilerplate (compare to 1 step with a jQuery Custom Filter) but if you really wish to go that route, it's now possible following the steps shown below.
 
 The steps to use an Angular Component as a Custom Filter are the following:
 1. Create a Custom Filter that will handle the creation or compilation of the Angular Component into a SlickGrid Editors. For that you can take a look at this [Custom Filter](https://github.com/ghiscoding/angular-slickgrid/blob/master/src/app/examples/custom-angularComponentFilter.ts)

docs/migrations/Migration-to-2.x.md

@@ -239,8 +239,8 @@ this.columnDefinitions = [
      id: 'description', name: 'Description', field: 'description',
      filter: {
 -       type: FilterType.custom,
--       customFilter: new CustomInputFilter()
-+       model: new CustomInputFilter() // create a new instance to make each Filter independent from each other
+-       customFilter: CustomInputFilter
++       model: CustomInputFilter // create a new instance to make each Filter independent from each other
      }
    },
    {

src/app/examples/custom-angularComponentEditor.ts

@@ -77,8 +77,8 @@ export class CustomAngularComponentEditor implements Editor {
   init() {
     if (!this.columnEditor || !this.columnEditor.params.component || !(this.angularUtilService instanceof AngularUtilService)) {
       throw new Error(`[Angular-Slickgrid] For Editor with Angular Component to work properly, you need to provide the "AngularUtilService" via the Editor "params" OR the Grid Options "params"
-      Example: this.columnDefs = [{ id: 'title', field: 'title', editor: { model: CustomAngularComponentEditor, collection: [...], params: { component: MyComponent, angularUtilService: this.angularUtilService }}];
-      OR this.columnDefs = [{ id: 'title', field: 'title', editor: { model: CustomAngularComponentEditor, collection: [...] }]; this.gridOptions = { params: { angularUtilService: this.angularUtilService }}`);
+      Example: this.columnDefs = [{ id: 'title', field: 'title', editor: { model: CustomEditor, collection: [...], params: { component: MyComponent, angularUtilService: this.angularUtilService }}];
+      OR this.columnDefs = [{ id: 'title', field: 'title', editor: { model: CustomEditor, collection: [...] }]; this.gridOptions = { params: { angularUtilService: this.angularUtilService }}`);
     }
     if (this.columnEditor?.params.component) {
       const componentOutput = this.angularUtilService.createAngularComponentAppendToDom(this.columnEditor.params.component, this.args.container);

src/app/examples/custom-angularComponentFilter.ts

@@ -63,8 +63,8 @@ export class CustomAngularComponentFilter implements Filter {
 
     if (!this.columnFilter || !this.columnFilter.params.component || !(this.angularUtilService instanceof AngularUtilService)) {
       throw new Error(`[Angular-Slickgrid] For Filter with Angular Component to work properly, you need to provide the "AngularUtilService" via the Filter "params" OR the Grid Options "params"
-      Example: this.columnDefs = [{ id: 'title', field: 'title', filter: { model: CustomAngularComponentFilter, collection: [...], params: { component: MyComponent, angularUtilService: this.angularUtilService }}];
-      OR this.columnDefs = [{ id: 'title', field: 'title', filter: { model: CustomAngularComponentFilter, collection: [...] }]; this.gridOptions = { params: { angularUtilService: this.angularUtilService }}`);
+      Example: this.columnDefs = [{ id: 'title', field: 'title', filter: { model: CustomFilter, collection: [...], params: { component: MyComponent, angularUtilService: this.angularUtilService }}];
+      OR this.columnDefs = [{ id: 'title', field: 'title', filter: { model: CustomFilter, collection: [...] }]; this.gridOptions = { params: { angularUtilService: this.angularUtilService }}`);
     }
 
     if (this.columnFilter?.params.component) {

src/app/examples/grid-angular.component.ts

@@ -123,7 +123,7 @@ export class GridAngularComponent implements OnInit {
         filterable: true,
         sortable: true,
         filter: {
-          model: new CustomAngularComponentFilter(), // create a new instance to make each Filter independent from each other
+          model: CustomAngularComponentFilter, // create a new instance to make each Filter independent from each other
           collection: this.assignees,
           params: {
             component: FilterNgSelectComponent,
@@ -155,7 +155,7 @@ export class GridAngularComponent implements OnInit {
         filterable: true,
         sortable: true,
         filter: {
-          model: new CustomAngularComponentFilter(), // create a new instance to make each Filter independent from each other
+          model: CustomAngularComponentFilter, // create a new instance to make each Filter independent from each other
           collection: this.assignees,
           params: {
             component: FilterNgSelectComponent,

src/app/examples/grid-clientside.component.ts

@@ -69,7 +69,7 @@ export class GridClientSideComponent implements OnInit {
         id: 'description', name: 'Description', field: 'description', filterable: true, sortable: true, minWidth: 80,
         type: FieldType.string,
         filter: {
-          model: new CustomInputFilter(), // create a new instance to make each Filter independent from each other
+          model: CustomInputFilter, // create a new instance to make each Filter independent from each other
           enableTrimWhiteSpace: true // or use global "enableFilterTrimWhiteSpace" to trim on all Filters
         }
       },

src/app/examples/grid-range.component.ts

@@ -97,7 +97,7 @@ export class GridRangeComponent implements OnInit, OnDestroy {
         id: 'description', name: 'Description', field: 'description', filterable: true, sortable: true, minWidth: 80,
         type: FieldType.string,
         filter: {
-          model: new CustomInputFilter(), // create a new instance to make each Filter independent from each other
+          model: CustomInputFilter, // create a new instance to make each Filter independent from each other
           enableTrimWhiteSpace: true // or use global "enableFilterTrimWhiteSpace" to trim on all Filters
         }
       },