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Structure
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Structure
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All components should be in their own unit/file (there are some exceptions) and the name of the unit should always be “class.Tclassname.php”.
Most visual components should be and are a descendant (ie extends in php) of the class “TAbstractHtmlComponent”
For example the class TLabel looks like this
class TLabel extends TAbstractHtmlComponent{…
and most components should implement at least a constructor method …as in…
function __construct($name='',$top='',$left='',$caption=''){
which is the TLabel constructor and gethtml() method
function gethtml(){..
Components can own other components by using the “addobject()” method. This method is defined in the “TComponent” class so we don’t ever need to define it or override or re-declare it.
Probably the most important class is the “THTMLPage” class. This is usually the base class of a new page/screen. It generates the <HTML><HEAD><BODY…</HTML>
tags for the page along with a few others for included style sheets (using the addcss() method) and included scripts (using the addheaderscript() method)