MACROMEDIA DREAMWEAVER MX 2004-EXTENDING DREAMWEAVER Specifikace stáhnout pdf (Strana 291)

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A simple floating panel example 291

4. When the floating panel is visible, the following actions occur:

■ When the selection changes, the selectionChanged() function is called, if it is

defined.

■ When the user makes changes to the document, the documentEdited() function is

called, if it is defined.

■ Event handlers that are attached to the fields in the floating panel interface execute as

the user encounters them. (For example, a button with an

onClick event handler that

executes

dw.getDocumentDOM().body.innerHTML='' removes everything between

the opening and closing

BODY tags in the document when it is clicked.)

Floating panels support two special events on the

body tag: onShow() and onHide().

5. When the user quits Dreamweaver, the current visibility, position, and tab grouping of the

floating panel are saved. The next time Dreamweaver starts up, it loads the floating panel

files for any floating panels that were visible at the last shutdown and displays the floating

panels in their last position and tab grouping.

A simple floating panel example

In this example, you create a Script Editor extension that creates a floating panel to display the

JavaScript code that underlies a selected script marker in Design view. The Script Editor

displays the JavaScript code in the

textarea element of an HTML form that is defined in a

floating panel called

scriptlayer. If you make changes to the selected code in the floating

panel, the extension calls the

updateScript() function to save your changes. If you have not

selected a script marker when you invoke the Script Editor, the extension displays

(no

script selected)

in a floating panel called blanklayer.

You create this extension by performing the following steps:

■ Creating the floating panels

■ Writing the JavaScript code

■ Creating a menu item

Creating the floating panels

The beginning of the HTML file for this extension contains the standard document header

information and a

title tag that puts the words Script Editor in the title bar of the floating

panels.

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