MACROMEDIA DREAMWEAVER MX 2004-EXTENDING DREAMWEAVER Specifikace stáhnout pdf (Strana 206)

206 Menus and Menu Commands

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.

receiveArguments()

Dreamweaver calls the receiveArguments() function to let the command process any

arguments that pass from the menu item. For the Preview in Browsers menu, the

receiveArguments() function invokes the browser that the user selects. The

receiveArguments() function looks like the following example:

function receiveArguments()

{

var whichBrowser = arguments[0];

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