PromptSupport - Haixing-Hu/swt-widgets GitHub Wiki

This is the PromptSupport widget comes from the OPAL project.

See http://designinginterfaces.com/Input_Prompt for a description of the Input Prompt pattern or http://msdn2.microsoft.com/en-us/library/aa511494.aspx#prompts for guidelines of how to use prompts in Windows Vista.

Usage

Add a Prompt to Your Existing Text Component

Just invoke

PromptSupport.setPrompt("Prompt Text", control);

Where control is an instance of a Text, a StyledText, aCombo or a CCombo widget.

Customize the Prompt

Focus Behavior

By default, the prompt text will be hidden, when the text component is focused:

This behavior can be customized with the PromptSupport.setFocusBehavior() method. The prompt text can be hidden or highlighted when the widget gets the focus (and no text is entered), as indicated in the screenshots below.

FocusBehavior.HIDE_PROMPT	FocusBehavior.HIGHLIGHT_PROMPT

Font Style and Color

The font of the prompt text by default is the same as the text component's font, but sometimes you want the prompt text to be different. You can make the prompt text plain, bold, italic, or both bold and italic with the PromptSupport.setFontStyle() method.

SWT.NONE	SWT.ITALIC	SWT.BOLD	SWT.BOLD & SWT.ITALIC

By default, the color used for the prompt text is the text component's disabled text color, but yout can change this with the PromptSupport.setForeground() method.

PromptSupport.setForeground(Color.RED) gives you:

You can also set a background color for the promp by calling PromptSupport.setBackground().

Example

An example is located in the source repository:

src/test/java/com/github/haixing_hu/swt/prompt/PromptSupportExample.java