Adobe 38040334 Extending Dreamweaver - Page 246

Returns, Example

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DREAMWEAVER CS3 240 Extending Dreamweaver This argument is the string that the applyBehavior() function returns. Returns Dreamweaver expects a string that contains a comma-separated list of the types of arguments in the function call. The length of the list must equal the number of arguments in the function call. Argument types must be one of the following types: • The nav argument type specifies that the argument is a navigational URL, and therefore, it should appear in the site map. • The dep argument type specifies that the argument is a dependent file URL, and therefore, it should be included with all other dependent files when a document that contains this behavior is downloaded from or uploaded to a server. • The URL argument type specifies that the argument is both a navigational URL and a dependent URL or that it is a URL of an unknown type and should appear in the site map and be considered a dependent file when downloading from or uploading to a server. • The NS4.0ref argument type specifies that the argument is a Netscape Navigator 4.0-style object reference. • The IE4.0ref argument type specifies that the argument is an Internet Explorer DOM 4.0-style object reference. • The objName argument type specifies that the argument is a simple object name, as specified in the NAME attribute for the object. This type was added in Dreamweaver 3. • The other argument type specifies that the argument is none of the above types. 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

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DREAMWEAVER CS3
Extending Dreamweaver
240
This argument is the string that the
applyBehavior()
function returns.
Returns
Dreamweaver expects a string that contains a comma-separated list of the types of arguments in the function call.
The length of the list must equal the number of arguments in the function call. Argument types must be one of the
following types:
The
nav
argument type specifies that the argument is a navigational URL, and therefore, it should appear in
the site map.
The
dep
argument type specifies that the argument is a dependent file URL, and therefore, it should be included
with all other dependent files when a document that contains this behavior is downloaded from or uploaded to a
server.
The
URL
argument type specifies that the argument is both a navigational URL and a dependent URL or that it is
a URL of an unknown type and should appear in the site map and be considered a dependent file when
downloading from or uploading to a server.
The
NS4.0ref
argument type specifies that the argument is a Netscape Navigator 4.0-style object reference.
The
IE4.0ref
argument type specifies that the argument is an Internet Explorer DOM 4.0-style object reference.
The
objName
argument type specifies that the argument is a simple object name, as specified in the
NAME
attribute
for the object. This type was added in Dreamweaver 3.
The
other
argument type specifies that the argument is none of the above types.
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
identifyBehav-
iorArguments()
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