Dropdown

Angular Bootstrap Dropdown

Angular Bootstrap Dropdown is a toggleable menu embedding additional links or content. It allows you to construct advanced navigation and link categorization.

In case of more complicated navigation systems, dropdowns are the essential elements providing you with possibility of placing all the most relevant links in our navigation bar (or other navigational components)

Aside from being not only highly functional, CDB dropdowns are also extraordinary visually attractive. It gives them this characteristic Material Design effects, like shadows, living colors or charming waves effect after a dropdown item is clicked.

They’re toggled by clicking, not by hovering; this is an intentional design decision. Why?

CDB is a "mobile first" framework so, we avoid mixing functional elements and interaction by hovering because it decreases User Experience of users of mobile devices.

Importing the Contrast Angular Bootstrap Dropdown Module

To use the Contrast Angular Bootstrap Collapse component in your project you need to import DropdownModule.

import {DropdownModule } from 'cdbangular';

Dark Toggle Bar

HTML

html

<CDBDropDown>
    <CDBDropDownToggle color="dark" (click)="menu1.toggleDropdown($event)"
        (mouseenter)="menu1.toggleDropdown($event)">
        Dark Toggle Bar
    </CDBDropDownToggle>
    <CDBDropDownMenu #menu1="cdbDropdownMenu">
        This is the toggle menu
    </CDBDropDownMenu>
</CDBDropDown>

Primary Toggle with Caret

HTML

html

<CDBDropDown>
    <CDBDropDownToggle color="primary" [caretDropDown]=true (click)="menu2.toggleDropdown($event)">
        Primary Toggle Bar
    </CDBDropDownToggle>
    <CDBDropDownMenu #menu2="cdbDropdownMenu" placement="bottom">
        This is the toogle menu with caret
    </CDBDropDownMenu>
</CDBDropDown>

Secondary Toggle Bar

HTML

html

<CDBDropDown>
    <CDBDropDownToggle [nav]=true color="secondary" [caretDropRight]=true
        (click)="menu3.toggleDropdown($event)">
        Secondary Toggle Bar as nav
    </CDBDropDownToggle>
    <CDBDropDownMenu #menu3="cdbDropdownMenu" placement="right">
        This is the toogle menu to the right
    </CDBDropDownMenu>
</CDBDropDown>

Danger Toggle Bar

HTML

html

<CDBDropDown>
    <CDBDropDownToggle color="danger" [caretDropUp]=true (click)="menu4.toggleDropdown($event)">
        Danger Toggle Bar
    </CDBDropDownToggle>
    <CDBDropDownMenu #menu4="cdbDropdownMenu" placement="top">
        This is the toogle menu to the top
    </CDBDropDownMenu>
</CDBDropDown>

Success Toggle Bar

HTML

html

<CDBDropDown>
    <CDBDropDownToggle color="success" [caretDropLeft]=true (click)="menu5.toggleDropdown($event)">
        Success Toggle Bar
    </CDBDropDownToggle>
    <CDBDropDownMenu #menu5="cdbDropdownMenu" placement="left">
        This is the toogle menu to the bottom
    </CDBDropDownMenu>
</CDBDropDown>

Large Dropdown

HTML

html

<CDBDropDown>
    <CDBDropDownToggle color="dark" size="lg" (click)="menu6.toggleDropdown($event)">
        Large Dark Toggle Bar
    </CDBDropDownToggle>
    <CDBDropDownMenu #menu6="cdbDropdownMenu" placement="right">
        This is the toogle menu to the right
    </CDBDropDownMenu>
</CDBDropDown>

Small Dropdown

HTML

html

<CDBDropDown>
    <CDBDropDownToggle color="secondary" size="sm" (click)="menu7.toggleDropdown($event)">
        Small Secondary Toggle Bar
    </CDBDropDownToggle>
    <CDBDropDownMenu #menu7="cdbDropdownMenu" placement="right">
        <CDBDropDownItem [header]=true>cold place</CDBDropDownItem>
        <CDBDropDownItem [divider]=true></CDBDropDownItem>
        <CDBDropDownItem [disabled]=true>
            First Item in cold place
        </CDBDropDownItem>
        <CDBDropDownItem [disabled]=true>second</CDBDropDownItem>
        <CDBDropDownItem [toggle]=true>second</CDBDropDownItem>
        <CDBDropDownItem>second</CDBDropDownItem>
        <CDBDropDownItem>
            <CDBLink to="/alert"> Alert</CDBLink>
        </CDBDropDownItem>
    </CDBDropDownMenu>
</CDBDropDown>

Disabled Danger Toggle Bar

Set the disabled prop of your dropdown to true to disable your dropdown.

HTML

html

<CDBDropDown>
    <CDBDropDownToggle color="danger" [disabled]=true (click)="menu8.toggleDropdown($event)">
        Disabled Danger Toggle Bar
    </CDBDropDownToggle>
    <CDBDropDownMenu #menu8="cdbDropdownMenu" placement="right">
        This is the toogle menu to the right
    </CDBDropDownMenu>
</CDBDropDown>

Menu with Header

HTML

html

<CDBDropDown>
    <CDBDropDownToggle color="secondary" (click)="menu9.toggleDropdown($event)">
        DropDown
    </CDBDropDownToggle>
    <CDBDropDownMenu #menu9="cdbDropdownMenu" placement="right">
        <CDBDropDownItem [header]=true>Cold place</CDBDropDownItem>
        <CDBDropDownItem>
            First Item in cold place
        </CDBDropDownItem>
        <CDBDropDownItem [toggle]=true>second</CDBDropDownItem>
        <CDBDropDownItem>second</CDBDropDownItem>
    </CDBDropDownMenu>
</CDBDropDown>

Menu with Divider

HTML

html

<CDBDropDown>
    <CDBDropDownToggle color="warning" (click)="menu10.toggleDropdown($event)">
        DropDown
    </CDBDropDownToggle>
    <CDBDropDownMenu #menu10="cdbDropdownMenu" placement="left">
        <CDBDropDownItem>
            <CDBLink to="/alert">Alert</CDBLink>
        </CDBDropDownItem>
        <CDBDropDownItem [divider]=true></CDBDropDownItem>
        <CDBDropDownItem>
            First Item in cold place
        </CDBDropDownItem>
        <CDBDropDownItem [toggle]=true>second</CDBDropDownItem>
        <CDBDropDownItem>second</CDBDropDownItem>
    </CDBDropDownMenu>
</CDBDropDown>

Disable Menu Items

HTML

html

<CDBDropDown>
    <CDBDropDownToggle color="success" (click)="menu11.toggleDropdown($event)">
        DropDown
    </CDBDropDownToggle>
    <CDBDropDownMenu #menu11="cdbDropdownMenu" placement="top">
        <CDBDropDownItem>Cold place</CDBDropDownItem>
        <CDBDropDownItem [disabled]=true>
            Disabled
        </CDBDropDownItem>
        <CDBDropDownItem [disabled]=true>Second</CDBDropDownItem>
        <CDBDropDownItem>Last</CDBDropDownItem>
    </CDBDropDownMenu>
</CDBDropDown>

Active Menu Items

HTML

html

<CDBDropDown>
    <CDBDropDownToggle color="dark" (click)="menu12.toggleDropdown($event)">
        DropDown
    </CDBDropDownToggle>
    <CDBDropDownMenu #menu12="cdbDropdownMenu" placement="top">
        <CDBDropDownItem>Cold place</CDBDropDownItem>
        <CDBDropDownItem [active]=true>
            Active
        </CDBDropDownItem>
        <CDBDropDownItem [toggle]=true>Second</CDBDropDownItem>
        <CDBDropDownItem>Last</CDBDropDownItem>
    </CDBDropDownMenu>
</CDBDropDown>

API Reference: Contrast Angular Bootstrap DropDown Props

This section will build on your information about the props you get to use with the Contrast Angular Bootstrap DropDown component. You will find out what these props do, their default values, and how you would use them in your code.

The table below lists other prop options of the CDBDropDown component.

Name	Type	Default	Description	Example
class	String		Adds custom classes	class="myClass"
dropup	Boolean	false	Trigger dropdown menu above dropdown button	dropUp
dropleft	Boolean	false	Trigger dropdown menu on the left side of dropdown button	dropleft
dropright	Boolean	false	Trigger dropdown menu on the right side of dropdown button	dropright
toggle	function		Control dropdown on click	toggle={handleToggle}

API Reference: Contrast Angular Bootstrap DropDownItem Properties

The table below lists other prop options of the CDBDropDownItem component.

Name	Type	Default	Description	Example
class	String		Adds custom classes	class="myClass"
active	Boolean	false	Sets active state for of the menu item	active=true
disable	Boolean	false	Disables item and sets its color to light grey	disable
divider	Boolean	false	Places dividing line instead of content	divider
header	Boolean	false	Formats the item as a menu header (grey text, more padding)	header
toggle	Boolean	false	Set to `false` to prevent from closing Dropdown on click	toggle=false
onClick	function		Toggle dropdown on click	onClick={handleToggle}

API Reference: Contrast Angular Bootstrap DropownMenu Properties

The table below lists other prop options of the CDBDropDownMenu component.

Name	Type	Default	Description	Example
class	String		Adds custom classes	class="myClass"
color	String	primary	Changes DropdownMenuItem hover background color, accepts `["primary", "secondary", "success", "dark", "danger", "info", "warning"]`	color="secondary"
disable	Boolean	false	Disables item and sets its color to light grey	disable=true
divider	Boolean	false	Places dividing line instead of content	divider=true
header	Boolean	false	Formats the item as a menu header (grey text, more padding)	header=true
toggle	Boolean	false	Set to `false` to prevent from closing Dropdown on click	toggle=false
onClick	function		Toggle dropdown on click	onClick={handleToggle}
dropup	Boolean	false	Trigger dropdown menu above dropdown button	dropup=true
dropdown	Boolean	false	Trigger dropdown menu below dropdown button	dropdown=true
dropleft	Boolean	false	Trigger dropdown menu on the left side of dropdown button	dropleft=true
dropright	Boolean	false	Trigger dropdown menu on the right side of dropdown button	dropright=true

API Reference: Contrast Angular Bootstrap DropDownToggle Properties

The table below lists other prop options of the CDBDropDownToggle component.

Name	Type	Default	Description	Example
class	String		Adds custom classes	class="myClass"
color	String	primary	Changes DropdownMenuItem hover background color, accepts `["primary", "secondary", "success", "dark", "danger", "info", "warning"]`	color="secondary"
size	String		Determines size of the Dropdown button, available parameters: `["lg", "sm"]` (medium by default)	size="sm"
caret	Boolean	false	Inserts caret icon inside Dropdown button	caret=true
nav	Boolean	false	Props required while using Dropdown within Navbar	nav=true
dropup	Boolean	false	Trigger dropdown menu above dropdown button	dropup=true
dropdown	Boolean	false	Trigger dropdown menu below dropdown button	dropdown=true
dropleft	Boolean	false	Trigger dropdown menu on the left side of dropdown button	dropleft=true
dropright	Boolean	false	Trigger dropdown menu on the right side of dropdown button	dropright=true

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