MACROMEDIA DREAMWEAVER MX 2004-EXTENDING DREAMWEAVER Specifikace stáhnout pdf (Strana 318)

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101

318 Behaviors

Example

This simple example of the identifyBehaviorArguments() function works for the Open

Browser Window behavior action, which returns a function that always has three arguments

(the URL to open, the name of the new window, and the list of window properties):

function identifyBehaviorArguments(fnCallStr) {

return "URL,other,other";

}

A more complex version of the identifyBehaviorArguments() function is necessary for

behavior functions that have a variable number of arguments (such as Show/Hide Layer). For

this example version of the

identifyBehaviorArguments() function, there is a minimum

number of arguments, and additional arguments always come in multiples of the minimum

number. In other words, a function with a minimum number of arguments of 4 may have 4,

8, or 12 arguments, but it cannot have 10 arguments:

function identifyBehaviorArguments(fnCallStr) {

var listOfArgTypes;

var itemArray = dreamweaver.getTokens(fnCallStr, '(),');

// The array of items returned by getTokens() includes the

// function name, so the number of *arguments* in the array

// is the length of the array minus one. Divide by 4 to get the

// number of groups of arguments.

var numArgGroups = ((itemArray.length - 1)/4);

// For each group of arguments

for (i=0; i < numArgGroups; i++){

// Add a comma and "NS4.0ref,IE4.0ref,other,dep" (because this

// hypothetical behavior function has a minimum of four

// arguments the Netscape object reference, the IE object

// reference, a dependent URL, and perhaps a property value

// such as "show" or "hide") to the existing list of argument

// types, or if no list yet exists, add only

// "NS4.0ref,IE4.0ref,other,dep"

var listOfArgTypes += ((listOfArgTypes)?",":"") + ¬

"NS4.0ref,IE4.0ref,other,dep";

}

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MACROMEDIA DREAMWEAVER MX 2004-EXTENDING DREAMWEAVER Specifikace Strana 318

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