WML Example
A WML deck with two cards - one for user input and one for displaying the result - can be set up, as demonstrated in this example:
<?xml version="1.0"?>
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN"
"http://www.wapforum.org/DTD/wml_1.1.xml">
<wml>
<card id="card1" title="Tutorial">
<do type="accept" label="Answer">
<go href="#card2"/>
</do>
<p><select name="name">
<option value="HTML">HTML Tutorial</option>
<option value="XML">XML Tutorial</option>
<option value="WAP">WAP Tutorial</option>
</select></p>
</card>
<card id="card2" title="Answer">
<p>You selected: $(name)</p>
</card>
</wml> |
The first card might look something like this in a mobile phone:
The second card might look like this:
----- Answer --------
You Selected: HTML
|
Example Explained
The Prolog
<?xml version="1.0"?>
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN"
"http://www.wapforum.org/DTD/wml_1.1.xml"> |
The first lines in the WML document are called the prolog. The prolog defines that this is an XML document, it then defines the XML version,
and the DTD to be referenced.
The Deck
The deck is the WML document itself. It is embedded within <wml> tags
The Cards
Cards are always displayed one at the time. This WML deck contains two cards - one for user input and one for displaying the result.
The <do> element
The first card has a <do> element that defines an event to be triggered.
The type="accept" attribute of the <do> element causes the label="Answer"
to be displayed in the lower left corner of the display.
The Event
The <go> element triggers when the user clicks the <do> label. The href="#card2" attribute
of the <go> element causes card2 to be displayed on the screen.
The Variable
Card2 displays the $(name) variable from card1, because variables are valid across cards.
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