Renders canvas for SVG-based editors.
This class provides the common framework used by svg-based editors.
Subclasses provide the actual implmentation.
parameter CONTENTTYPE = "image/svg-xml";
Specifies the default content type for the page. This can be overriden using the
<CSP:CONTENT TYPE=> tag, or by setting the %response.ContentType property
in the OnPreHTTP method. The default value if this parameter is
not set is text/html.
parameter DOMAIN = "Ensemble";
Use our own domain for localization
parameter HEIGHT = 2000;
Initial height of editor
Comma-delimited list of additional .js files that this page includes
parameter WIDTH = 2000;
Initial width of editor
Draw defs section
final classmethod DrawStyleSheet()
Draw style sheet
Draw main svg canvas
Callback: draw additional script definitions for this canvas
Callback: draw additional style sheet definitions for this canvas
Event handler for PAGE event: this is invoked in order to
generate the content of a csp page.
Event handler for PreHTTP event: this is invoked before
the HTTP headers for a CSP page have been sent. All changes to the
%CSP.Response class, such as adding cookies, HTTP headers,
setting the content type etc. must be made from within the OnPreHTTP() method.
Also changes to the state of the CSP application such as changing
%session.EndSession or %session.AppTimeout must be made within the OnPreHTTP() method.
It is prefered that changes to %session.Preserve are also made in the OnPreHTTP() method
as this is more efficient, although it is supported in any section of the page.
Return 0 to prevent OnPage from being called.