Placeholders for Empty Elements
Oxygen XML Author displays the element name as pseudo-content for empty elements if the
Show placeholders for empty elements option is enabled in
the Author preferences page and there is no before or
after content set in the CSS for this type of element. There are two CSS properties
that can be used to control the placeholders (-oxy-placeholder-content and
-oxy-show-placeholder).
-oxy-placeholder-content CSS Property
To control the displayed pseudo-content for empty elements, you can use the
-oxy-placeholder-content CSS property.
The following example would change the keyword element to be displayed as
key:
keyword{
-oxy-placeholder-content:"key";
}
-oxy-show-placeholder CSS Property
The -oxy-show-placeholder property allows you to decide whether or not the
placeholder will be shown. The possible values are:
always- Always display placeholders.default- Always display placeholders if before or after content are not set is CSS.inherit- The placeholders are displayed according to the Show placeholders for empty elements option (ifbeforeandaftercontent is not declared).
Note
show-placeholder and
placeholder-content are also supported.