What are all the possible settings attributes in TinyMCE’s addButton() function?

• autofocus: True if the control should be focused when rendered
• border: Border box values example: 1 1 1 1
• classes: Space separated list of classes to add
• disabled: Is the control disabled by default
• hidden: Is the control hidden by default
• icon: Icon to use for button
• image: Image to use for icon
• margin: Margin box values example: 1 1 1 1
• minHeight: Minimal height for the control
• minWidth: Minimal width for the control
• name: Name of the control instance
• padding: Padding box values example: 1 1 1 1
• role: WAI-ARIA role to use for control
• size: Size of the button small|medium|large
• style: Style CSS properties to add
• text: Text to display inside widget
• tooltip: Tooltip text to display when hovering

For a full list of all the settings and methods see the TinyMCE documentation page