A button that can be pressed by the user.

<button label="Save" accesskey="S"/>

• More information about the button element.
• Button Reference

A button that has a drop down menu attached to it. Pressing the button opens the menu.

<button type="menu" label="View">
  <menupopup>
    <menuitem label="List"/>
    <menuitem label="Details"/>
  </menupopup>
</button>

• More information about this type of menu button element.
• Button Reference
• Related Elements: menupopup menuitem

A button that that has a separate arrow button with a menu attached to it. Unlike with the 'menu' type, a separate action may be performed when the main part of the button is pressed.

<button type="menu-button" label="New">
  <menupopup>
    <menuitem label="New Document"/>
    <menuitem label="New Image"/>
  </menupopup>
</button>

• More information about this type of menu button element.
• Button Reference
• Related Elements: menupopup menuitem

A control that may be turned on and off, typically used to create options which may be enabled or disabled.

<checkbox label="Show Toolbar Labels" checked="true"/>

• More information about the checkbox element.
• Checkbox Reference

A control that may be used to select a color.

<colorpicker color="#FF0000"/>

• Colorpicker Reference

A specialized type of color picker which shows only a button. Pressing the button displays a color picker popup window.

<colorpicker type="button" color="#CC0080"/>

• Colorpicker Reference

A set of textboxes which may be used to allow the entry of a date.

<datepicker value="2007/03/26"/>

• Datepicker Reference

A datepicker which displays a calendar grid for selecting a date.

<datepicker type="grid" value="2007/02/20"/>

• Datepicker Reference

A datepicker which displays a set of textboxes for date entry, but also has a button for displaying a popup calendar grid.

<datepicker type="popup" value="2008/08/24"/>

• Datepicker Reference

The description element is used for descriptive text.

<description>
  Select a time for the event to start
</description>

• More information about the description element.
• Description Reference

A groupbox displays a labelled box around other user interface controls.

<groupbox>
  <caption label="Network"/>
</groupbox>

• More information about the groupbox element.
• Groupbox Reference
• Related Elements: caption

Allows the user to select a file.

<filefield/>

• Filefield Reference

An image specified by a URL.

<image src="start.png"/>

• More information about the image element.
• Image Reference

Adds a text label to a nearby control.

<label control="volume" value="Volume:"/>

• More information about the label element.
• Label Reference

The listbox is used to select an item from a list of labelled items.

<listbox>
  <listitem label="Chocolate"/>
  <listitem label="Jelly Beans"/>
</listbox>

• More information about the listbox element.
• Listbox Reference
• Related Elements: listcell listcols listcol listhead listheader listitem

A menulist (or combobox) is used to create a control with a drop down to select a value.

<menulist>
  <menupopup>
    <menuitem label="Lions" value="l"/>
    <menuitem label="Tigers" value="t"/>
    <menuitem label="Bears" value="b"/>
  </menupopup>
</menulist>

• More information about the menulist element.
• Menulist Reference
• Related Elements: menupopup menuitem

An editable menulist is like a standard menulist except that the selected value is displayed in a textbox where it may be modified directly or values not in the popup list may be entered.

<menulist editable="true">
  <menupopup>
    <menuitem label="Elephants"/>
    <menuitem label="Kangaroos"/>
    <menuitem label="Bats"  />
  </menupopup>
</menulist>

• More information about the editable menulist element.
• Menulist Reference
• Related Elements: menupopup menuitem

A progress meter is used to display the progress of a lengthy task.

<progressmeter value="40"/>

• More information about the progressmeter element.
• Progressmeter Reference

A radio button is used when only one of a set of options may be selected at a time.

<radiogroup>
  <radio label="Light" value="light"/>
  <radio label="Heavy" value="heavy"/>
<radio label="Heay" value="hea"/>
</radiogroup>

• More information about the radio element.
• Radio Reference
• Related Elements: radiogroup

The richlistbox displays a list of items where one or more may selected. Unlike the listbox which is designed to display fixed size rows, the richlistbox may display any type of content.

<richlistbox>
  <richlistitem>
    <image src="happy.png"/>
  </richlistitem>
  <richlistitem>
    <image src="sad.png"/>
  </richlistitem>
  <richlistitem>
    <image src="angry.png"/>
  </richlistitem>
</richlistbox>

• Richlistbox Reference
• Related Elements: richlistitem

A scale displays a bar with a thumb that may be slid across the bar to select between a range of values.

<scale min="1" max="10"/>

• Scale Reference

Allows the user to adjust the division of space between elements.

<splitter collapse="before">
  <grippy/>
</splitter>

• Splitter Reference
• Related Elements: grippy

Description goes here.

<tab label="firefox"/>

• Tab Reference
• Related Elements: tabs tabbox tabpanels

A textbox which allows a single line of text to be entered.

<textbox value="firefox"/>

• More information about the textbox element.
• Textbox Reference

A textbox which allows multiple lines of text to be entered.

<textbox multiline="true"/>

• More information about the multiple line textbox element.
• Textbox Reference

A textbox that provides a dropdown showing matches that would complete what the user types. The user can select one to have it filled into the textbox.

<textbox type="autocomplete" autocompletesearch="history"/>

• Textbox Reference

A textbox for entering numbers. Two arrow buttons are displayed for cycling through values.

<textbox type="number" min="1" max="20"/>

• Textbox Reference

A textbox that hides the characters typed, used for entering passwords.

<textbox type="password"/>

• Textbox Reference

A textbox for searching.

<textbox type="search"/>

• Textbox Reference

Deprecated in Gecko 1.9.1

A textbox for responding to user input. The command event is fired after the user stops typing, or if the user tabs away or hits Enter.

<textbox type="timed"/>

• Textbox Reference

A timepicker displays a set of textboxes for entering a time.

<timepicker value="12:05"/>

• Timepicker Reference

A button that is displayed on a toolbar.

<toolbarbutton label="Reload"/>

• More information about the toolbarbutton element.
• Toolbarbutton Reference
• Related Elements: toolbar

A button that is displayed on a toolbar with a drop down menu attached to it.

<toolbarbutton type="menu" label="Show">
  <menupopup>
    <menuitem label="Toolbars"/>
    <menuitem label="Status Bar"/>
  </menupopup>
</toolbarbutton>

• More information about this type of menu toolbarbutton element.
• Toolbarbutton Reference
• Related Elements: menupopup menuitem toolbar

A button on a toolbar that that has a separate arrow button with a menu attached to it. Unlike with the 'menu' type, a separate action may be performed when the main part of the button is pressed.

<toolbarbutton type="menu-button" label="Open">
  <menupopup>
    <menuitem label="Open Changed Files"/>
    <menuitem label="Open All"/>
  </menupopup>
</toolbarbutton>

• More information about this type of menu toolbarbutton element.
• Toolbarbutton Reference
• Related Elements: menupopup menuitem toolbar

A tree displays a hierarchy of items in multiple columns.

<tree>
  <treecols>
    <treecol label="Name" flex="1"/>
    <treecol label="Size" flex="1"/>
  </treecols>
  <treechildren>
    <treeitem>
      <treerow>
        <treecell label="Popcorn"/>
        <treecell label="Large"/>
      </treerow>
    </treeitem>
    <treeitem>
      <treerow>
        <treecell label="Root Beer"/>
        <treecell label="Small"/>
      </treerow>
    </treeitem>
  </treechildren>
</tree>

• More information about the tree element.
• Tree Reference
• Related Elements: treecell treechildren treecol treecols treeitem treerow