MACROMEDIA DREAMWEAVER 8-DREAMWEAVER API Specifiche Scaricare il pdf (Pagina 143)

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Behaviors 143

A simple behavior example

To understand how behaviors work and how you can create one, it’s helpful to look at an

example. The Configuration/Behaviors/Actions folder inside the Dreamweaver application folder

contains many examples; however, many are likely to be too complex a starting point for all but

the most advanced developers. The simplest Action file to start with is Call JavaScript.htm (along

with its counterpart, Call JavaScript.js, which contains all the JavaScript functions).

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

goes to 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 other actions than going to URLs.

<!DOCTYPE HTML SYSTEM "-//Macromedia//DWExtension layout-engine 5.0//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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