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Dropdown

The Dropdown component is a directive that provides contextual overlays for displaying lists of links and more.

The dropdown is an ng-bootstrap component.

This documentation gives only the specifics for a usage within Post project.
Read the complete information about the component's configuration in ng-bootstrap dropdown documentation.

Make sure the @ng-bootstrap/ng-bootstrap package is already present in your project or follow ng-bootstrap installation guidelines.

To import all ng-bootstrap components:

import { NgbModule } from '@ng-bootstrap/ng-bootstrap';

@NgModule({
  imports: [NgbModule],
})
export class YourAppModule {
}

To import only this component:

import {NgbDropdownModule} from '@ng-bootstrap/ng-bootstrap';

@NgModule({
  imports: [NgbDropdownModule],
})
export class YourAppModule {
}

Make sure the @swisspost/design-system-styles package is already present in your project or follow the installation guidelines.

To import all Design System styles:

@use '@swisspost/design-system-styles/index.scss';

To import only the styles required for this component:

@use '@swisspost/design-system-styles/basics.scss';
@use '@swisspost/design-system-styles/components/dropdown.scss';
Basic Dropdown
<div>
  <label for="dropdownBasic1" class="form-label">Basic dropdown</label>
  <div ngbDropdown class="me-2">
    <button class="btn btn-primary" id="dropdownBasic1" ngbDropdownToggle>Toggle dropdown</button>
    <div ngbDropdownMenu aria-labelledby="dropdownBasic1">
      <button ngbDropdownItem>Action - 1</button>
      <button ngbDropdownItem class="active">Active action</button>
      <button ngbDropdownItem disabled>Something disabled</button>
      <hr />
      <button ngbDropdownItem>Action - 2</button>
      <button ngbDropdownItem>Action - 3</button>
      <button ngbDropdownItem>Action - 4</button>
      <button ngbDropdownItem>Action - 5</button>
      <button ngbDropdownItem>Action - 6</button>
      <button ngbDropdownItem>Action - 7</button>
      <button ngbDropdownItem>Action - 8</button>
      <button ngbDropdownItem>Action - 9</button>
      <button ngbDropdownItem>Action - 10</button>
      <button ngbDropdownItem>Action - 11</button>
    </div>
  </div>
</div>
Basic Dropup
<div>
  <label for="dropdownBasic2" class="form-label">Basic dropup</label>
  <div ngbDropdown placement="top-right" class="me-2">
    <button class="btn btn-secondary" id="dropdownBasic2" ngbDropdownToggle>Toggle dropup</button>
    <div ngbDropdownMenu aria-labelledby="dropdownBasic2">
      <button ngbDropdownItem>Action - 1</button>
      <button ngbDropdownItem>Another Action</button>
      <button ngbDropdownItem>Something else is here</button>
      <button ngbDropdownItem>Action - 2</button>
      <button ngbDropdownItem>Action - 3</button>
    </div>
  </div>
</div>
Scrollable Dropup
<div>
  <label for="dropdownBasic3" class="form-label">Long dropup with scroll</label>
  <div ngbDropdown placement="top-right" class="me-2">
    <button class="btn btn-primary" id="dropdownBasic3" ngbDropdownToggle>Toggle dropup</button>
    <div ngbDropdownMenu aria-labelledby="dropdownBasic2">
      <button ngbDropdownItem>Action - 1</button>
      <button ngbDropdownItem>Another Action</button>
      <button ngbDropdownItem>Something else is here</button>
      <button ngbDropdownItem>Action - 2</button>
      <button ngbDropdownItem>Action - 3</button>
      <button ngbDropdownItem>Action - 4</button>
      <button ngbDropdownItem>Action - 5</button>
      <button ngbDropdownItem>Action - 6</button>
      <button ngbDropdownItem>Action - 7</button>
      <button ngbDropdownItem>Action - 8</button>
      <button ngbDropdownItem>Action - 9</button>
      <button ngbDropdownItem>Action - 10</button>
      <button ngbDropdownItem>Action - 11</button>
      <button ngbDropdownItem>Action - 12</button>
      <button ngbDropdownItem>Action - 13</button>
      <button ngbDropdownItem>Action - 14</button>
    </div>
  </div>
</div>
Dropdown with Icons
<div>
  <label for="dropdownBasic4" class="form-label">Dropdown with icons</label>
  <div ngbDropdown class="me-2">
    <button class="btn btn-secondary" id="dropdownBasic4" ngbDropdownToggle>Toggle dropdown</button>
    <div ngbDropdownMenu aria-labelledby="dropdownBasic3">
      <button ngbDropdownItem class="btn-border-radius-sm">
        <i class="pi pi-3035"></i>
        <span>Action with icon</span>
      </button>

      <button ngbDropdownItem class="btn d-flex align-items-center justify-content-between">
        <span>
          <i class="pi pi-1001"></i>
          <span>Action with two icons</span>
        </span>
        <i class="pi pi-2050"></i>
      </button>

      <button ngbDropdownItem class="btn">
        <i class="pi"></i>
        <span>Action with empty icon</span>
      </button>

      <button ngbDropdownItem>
        Action name as if it was written by Ernest Hemingway who would not stop writing even if
        there's no point to do so whatsoever
      </button>
      <button ngbDropdownItem>Action - 5</button>
      <button ngbDropdownItem>Action - 6</button>
      <button ngbDropdownItem>Action - 7</button>
      <button ngbDropdownItem>Action - 8</button>
      <button ngbDropdownItem>Action - 9</button>
      <button ngbDropdownItem>Action - 10</button>
      <button ngbDropdownItem>Action - 11</button>
    </div>
  </div>
</div>