Themes

The widget framework has been designed using OOP concepts. Specifically each Widget is part of a "Class" hierarchy, so taking the chart/Column widget as an example, its inheritance hierarchy looks like this:

• common_Class
• common_PropertyExt
• common_Widget
• common_SVGWidget
• chart_XYAxis
• chart_Column

IOW chart/Column is a "specialized" instance of a chart/XYAxis, which in turn is is a "specialized" instance of a common_SVGWidget and so on.

Published properties can be assigned at any level of this hierarchy, for example "chart_XYAxis" would have a bunch of properties about the two Axis. While "chart_Column" will have properties about columns specifically (if they are "stacked" or not).