Widgets, Validators, and Delegates

XML widgets extend Swing widgets and override some of their methods.
XML widgets also implement the XMLDataWidget and XMLDataValidator interfaces.

Ť Interface ť
XMLDataWidget

+ loadData(ScriptExecutionContext)
+ saveData(ScriptExecutionContext)

Ť Interface ť
XMLDataValidator

+ validateData() : boolean

Class	Extends	Implements	Delegates
XMLLabel	JLabel	XMLDataWidget	XMLWidgetDelegate
XMLTextField	JTextField	XMLDataWidget, XMLDataValidator	XMLTextDelegate
XMLPasswordField	JPasswordField	XMLDataWidget, XMLDataValidator	XMLTextDelegate
XMLTextArea	JScrollPane	XMLDataWidget, XMLDataValidator	XMLTextDelegate
XMLCheckBox	JCheckBox	XMLDataWidget	XMLToggleDelegate
XMLRadioButton	JRadioButton	XMLDataWidget	XMLToggleDelegate
XMLComboBox	JComboBox	XMLDataWidget, XMLDataValidator	XMLTextDelegate
XMLListItem	Object	XMLDataWidget	XMLToggleDelegate
XMLResourceAddress	Box	XMLDataWidget, XMLDataValidator	XMLTextDelegate
XMLWebBrowser	JPanel	XMLDataWidget	XMLBrowserDelegate

Widgets have many functions in common.
To avoid duplication, we gather that functionality into the XMLWidgetDelegate classes.

XMLWidgetDelegate

adjustSize(Dimension) : Dimension
loadsData() : boolean
loadData(ScriptExecutionContext) : String
saveData(ScriptExecutionContext, String)
...

XMLTextDelegate

validateText(Component, String) : boolean

XMLToggleDelegate

isInitiallySelected() : boolean
loadLabel(ScriptExecutionContext) : String
loadSelected(ScriptExecutionContext) : boolean
saveSelected(boolean, ScriptExecutionContext)

XMLBrowserDelegate

loadHomeUrl(ScriptExecutionContext) : String
loadUrl(ScriptExecutionContext) : String
loadsHomeUrl() : boolean
loadsUrl() : boolean

By avoiding unnecessary duplication of functions, we keep the lines of code to a minimum:

XMLDialog	510
XMLBox	73
XMLRepeatBox	60
XMLAutoCloser	110

XMLDataValidator	34
XMLDataWidget	51

XMLWidgetDelegate	160
XMLTextDelegate	46
XMLToggleDelegate	95
XMLBrowserDelegate	85

XMLImage	75
XMLLabel	59
XMLTextField	72
XMLTextArea	92
XMLCheckBox	64
XMLRadioButton	116

XMLComboBox	140
XMLListItem	74
XMLPasswordField	74
XMLResourceAddress	177
XMLWebBrowser	83