Adobe Extending Dreamweaver CS4 Manual do Utilizador descarregar pdf (Página 242)

236

EXTENDING DREAMWEAVER CS4

Behaviors

Create the behavior extension

The following code presents a relatively simple example. The code checks the brand of the browser. The code opens

one page if the brand is Netscape Navigator and another if the brand is Microsoft Internet Explorer. This code can

easily be expanded to check for other brands such as Opera and WebTV and modified to perform actions other than

going to URLs.

1 Create a new blank file.

2 Add the following to the file:

<!DOCTYPE HTML SYSTEM "-//Adobe//DWExtension layout-engine 10.0//dialog">

<html>

<head>

<title>behavior "Check Browser Brand"</title>

// The function that will be inserted into the

// HEAD of the user's document

function checkBrowserBrand(netscapeURL,explorerURL) {

if (navigator.appName == "Netscape") {

if (netscapeURL) location.href = netscapeURL;

}else if (navigator.appName == "Microsoft Internet Explorer") {

if (explorerURL) location.href = explorerURL;

}

//******************* API **********************

function canAcceptBehavior(){

return true;

}

// Return the name of the function to be inserted into

// the HEAD of the user's document

function behaviorFunction(){

return "checkBrowserBrand";

}

// Create the function call that will be inserted

// with the event handler

function applyBehavior() {

var nsURL = escape(document.theForm.nsURL.value);

var ieURL = escape(document.theForm.ieURL.value);

if (nsURL && ieURL) {

return "checkBrowserBrand(\'" + nsURL + "\',\'" + ieURL + "\')";

}else{

return "Please enter URLs in both fields."

}

// Extract the arguments from the function call

// in the event handler and repopulate the

// parameters form

function inspectBehavior(fnCall){

var argArray = getTokens(fnCall, "()',");

var nsURL = unescape(argArray[1]);

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