MACROMEDIA FIREWORKS 8-EXTENDING FIREWORKS Especificações descarregar pdf (Página 4)

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CHAPTER 11

Using the History panel to create a command

Not only does the History panel show the recent actions you’ve performed, it lets you save a sequence

of those actions as a Fireworks command file. Perform the following actions to create your first

Fireworks command:

1. Create a new document.

2. Draw a rectangle on the canvas and change its fill color.

3. Select the steps you just performed in the History panel, and then click the Save icon.

4. When prompted for a command name, enter Draw Rect (see Figure 11-1).

Figure 11‑1. Creating a simple command using the History panel

After saving the command, you should now have a new menu item available from the main toolbar’s

Commands menu. Try deleting your rectangle and executing the command you just created (select

Commands ➤ Draw Rect). If you saved the correct steps in your History panel, a new rectangle should

appear with the same specifications as the one you previously created.

What just happened?

Fireworks created a new JSF file and saved it to a special directory on your hard drive. The file contains

JavaScript code that performs the actions you selected in the

History panel. Fireworks sees this new

file and displays it in the list of commands in the

Commands menu. When you select the command

from the menu, the JavaScript within this file is interpreted and executed by the internal Fireworks

JavaScript interpreter. This process is similar to a web browser executing JavaScript, and then manipu-

lating the elements within its Document Object Model (DOM) based on the JavaScript. And, in the

same way that web browsers provide a DOM that can be interacted with via JavaScript (document.

getElementById(), for example), Fireworks exposes its DOM to be accessed via JavaScript.

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