Adobe Extending Dreamweaver CS4 - Manual (Page 165)

159 EXTENDING DREAMWEAVER CS4
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bHavePreviewTarget = false;
else if (strTemp.indexOf("/") == -1)
bHavePreviewTarget = false;
else if (!DWfile.exists(selFile))
bHavePreviewTarget = false;
else if (DWfile.getAttributes(selFile).indexOf("D") != -1)
bHavePreviewTarget = false;
}
else
{
bHavePreviewTarget = true;
}
}
}
}
}
else if (dw.getFocus() == 'document' ||
dw.getFocus() == 'textView' || dw.getFocus("true") == 'html' )
{
var dom = dw.getDocumentDOM('document');
if (dom != null)
{
var parseMode = dom.getParseMode();
if (parseMode == 'html' || parseMode == 'xml')
bHavePreviewTarget = true;
}
}
return bHavePreviewTarget;
}
The havePreviewTarget() function sets the value bHavePreviewTarget to false as the default return value. The
function performs two basic tests calling the dw.getFocus() function to determine what part of the application
currently has input focus. The first test checks whether the Site panel has focus (if (dw.getFocus(true) == 'site')). If the
Site panel does not have focus, the second test checks to see if a document (dw.getFocus() == 'document'), Text view
(dw.getFocus() == 'textView'), or the Code inspector (dw.getFocus("true") == 'html') has focus. If neither test is true,
the function returns the value
false .
If the Site panel has focus, the function checks whether the view setting is Remote view. If it is, the function sets
bHavePreviewTarget to true if there are remote files (site.getRemoteSelection().length > 0) and the files can be
opened in a browser (site.canBrowseDocument()). If the view setting is not Remote view, and if the view is not None,
the function gets a list of the selected files (var selFiles = site.getSelection();) in the form of
file:/// URLs.
For each item in the selected list, the function tests for the presence of the character string " :// ". If it is not found, the
code performs a series of tests on the list item. If the item is not in the form of a file:/// URL (if
(selFile.indexOf(urlPrefix) == -1)), it sets the return value to false . If the remainder of the string following the
file:/// prefix does not contain a slash (/) (if (strTemp.indexOf("/") == -1)), it sets the return value to false . If the
file does not exist (else if (!DWfile.exists(selFile))), it sets the return value to false . Last, it checks to see if the specified
file is a folder (else if (DWfile.getAttributes(selFile).indexOf("D") != -1)). If selfile is a folder, the function returns
the value false. Otherwise, if the target is a file, the function sets bHavePreviewTarget to the value true .
If a document, Text view, or the Code inspector has input focus ( else if (dw.getFocus() == 'document' ||
dw.getFocus() == 'textView' || dw.getFocus("true") == 'html' )), the function gets the DOM and checks to see if the
document is an HTML or an XML document. If so, the function sets
bHavePreviewTarget to true . Finally, the
function returns the value stored in bHavePreviewTarget .