Adobe Extending Dreamweaver CS4 - Manual (Page 231)

225 EXTENDING DREAMWEAVER CS4
Floating panels
selectionChanged(): is a script marker selected?
The
selectionChanged() function determines whether a script marker has been selected in Design view. A script
marker appears in Design view if there is a JavaScript routine in the body section of a document and if Scripts is selected
on the Invisible Elements section of the Preferences dialog box. The following figure shows a script marker icon:
The selectionChanged() function first calls the dw.getDocumentDOM() function to get the Document Object
Model (DOM) for the user’s document. It then calls the getSelectedNode() function to see if the selected node for
that document is, first, an element and, second, a SCRIPT tag. If both these conditions are true, the
selectionChanged() function makes the scripteditor floating panel visible and loads it with the underlying
JavaScript code. It also sets the visibility property of the blanklayer floating panel to the value hidden . The
following figure shows the scriptlayer floating panel with the selected JavaScript code:
If the selected node is not an element, or it is not a script tag, the selectionChanged() function makes the
blanklayer floating panel visible and hides the scriptlayer panel. The blanklayer floating panel displays the text
(no script selected) , as shown in the following figure:
Add the selectionChanged() function
1 Open the file scriptEditor.htm that is in the Configuration/Floaters folder.