Adobe Extending Dreamweaver CS4 Instrukcja Użytkownika Pobierz pdf (Strona 176)

170

EXTENDING DREAMWEAVER CS4

Toolbars

function receiveArguments(newTitle)

{

var dom = dw.getDocumentDOM();

if (dom)

dom.setTitle(newTitle);

}

Dreamweaver passes newTitle, which is the value that the user enters, to the receiveArguments() function. The

receiveArguments() function first checks to see whether a current DOM exists. If it does, the receiveArguments()

function sets the new document title by passing

newTitle to the dom.setTitle() function.

getCurrentValue(): get the title

Whenever an update cycle occurs, as determined by the default update frequency of the onEdit event handler,

Dreamweaver calls the

getCurrentValue() function to determine what value to display for the control. The default

update frequency of the

onEdit handler determines the update frequency because the Title text edit control has no

update attribute.

For the Title text box, the following getCurrentValue() function calls the JavaScript application programming

interface (API) function

dom.getTitle() to obtain and return the current title.

The function is as follows:

function getCurrentValue()

{

var title = "";

var dom = dw.getDocumentDOM();

if (dom)

title = dom.getTitle();

return title;

}

Until the user enters a title for the document, the getTitle() function returns Untitled Document, which appears in

the text box. After the user enters a title, the

getTitle() function returns that value, and Dreamweaver displays it as

the new document title.

To see the complete HTML file that contains the JavaScript functions for the Title text box, see the EditTitle.htm file

in the Toolbars/MM folder.

The MM folder is reserved for Adobe files. Create another folder inside the Toolbars folder, and place your JavaScript

code in that folder.

The toolbar definition file

A toolbar is simply a list of radio buttons, check buttons, edit boxes, and other toolbar items, optionally divided by

separator tags. Each toolbar item can be a reference to an item using the itemref tag, a separator using the

separator tag, or a complete toolbar item definition for a check box or an edit box; for example, as described in

“Toolbar item tags” on page 175.

Each toolbar definition file starts with the following declarations:

<?xml version="1.0" encoding="optional_encoding"?>

<!DOCTYPE toolbarset SYSTEM "-//Macromedia//DWExtension toolbar 5.0">

If the encoding is omitted, Dreamweaver uses the default encoding of the operating system.

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