MACROMEDIA DREAMWEAVER MX 2004-EXTENDING DREAMWEAVER Spécifications télécharger pdf (Page 236)

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236 Toolbars

Example

checked="dw.getDocumentDOM() != null && dw.getDocumentDOM().getView() ==

'code'"

value="script"

This attribute is required for pop-up menus, combo boxes, text boxes, and color pickers.

Dreamweaver ignores the

value attribute for other types of items.

To determine what value to display for pop-up menus and combo boxes, Dreamweaver first

calls

isCommandchecked() for each item in the menu. If the isCommandchecked() function

returns a

true value for any items, Dreamweaver displays the value for the first one. If no

items return a

true value or the isCommandChecked() function is not defined, Dreamweaver

calls the

getCurrentValue() function or executes the script that the value attribute

specifies. If the control is a combo box, Dreamweaver displays the returned value. If the

control is a pop-up menu, Dreamweaver temporarily adds the returned value to the list and

displays it.

In all other cases, the script returns the current value to display. For pop-up menus or combo

boxes, this value should be one of the items in the menu list. For combo boxes and text boxes,

the value can be any string that the script returns. For color pickers, the value should be a

valid color but Dreamweaver does not enforce this.

The value attribute is equivalent to the

getCurrentValue() function in a toolbar command

file.

update="update_frequency_list"

Optional. This attribute specifies how often the enabled, checked, showif, and value

handlers should run to update the visible state of the item. The

update attribute is equivalent

to the

getUpdateFrequency() function in a toolbar command file.

You must specify the update frequency for toolbar items because these items are always visible,

unlike menu items. For this reason, you should always select the lowest frequency possible and

make sure your handlers for the

enabled, checked, and value handlers are as simple as

possible.

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MACROMEDIA DREAMWEAVER MX 2004-EXTENDING DREAMWEAVER Spécifications Page 236

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