Macromedia dreamweaver 8-extending dreamweaver User Manual
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
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
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.
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.
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
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.