com.lynden.gmapsfx.javascript

Class JavascriptRuntime

java.lang.Object

com.lynden.gmapsfx.javascript.JavascriptRuntime

All Implemented Interfaces:

IJavascriptRuntime

public class JavascriptRuntime
extends Object
implements IJavascriptRuntime

Class for interacting with the JavaScript environment. This class is used by the JavaScript objects, but should not need to be used directly for creating or changing maps.

Author:

Rob Terpilowski

Field Summary

Fields

Modifier and Type	Field and Description
static IWebEngine	engine
protected static IJavascriptRuntime	runtime

Constructor Summary

Constructors

Constructor and Description
JavascriptRuntime()

Method Summary

Modifier and Type	Method and Description
netscape.javascript.JSObject	execute(String command) Execute the specified command returning a value (if any)
protected String	getArgString(Object arg) Takes the specified object and converts the argument to a String.
String	getArrayConstructor(String javascriptObjectType, Object[] ary) Gets an array parameter constructor as a String, which then can be passed to the execute() method.
String	getArrayFunction(String function, Object[] ary) Gets an array function as a String, which then can be passed to the execute() method.
String	getConstructor(String javascriptObjectType, Object... args) Gets a constructor as a string which then can be passed to the execute().
String	getFunction(String function, Object... args) Gets a function as a String, which then can be passed to the execute() method.
String	getFunction(String variable, String function, Object... args) Gets a function as a String, which then can be passed to the execute() method.
static IJavascriptRuntime	getInstance() Gets a singleton instance of this class, creating one if it doesn't yet exist.
static void	setDefaultWebEngine(IWebEngine e) Set the WebEngine that this runtime should use.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

runtime

protected static IJavascriptRuntime runtime

engine

public static IWebEngine engine

Constructor Detail

JavascriptRuntime

public JavascriptRuntime()

Method Detail

getInstance

public static IJavascriptRuntime getInstance()

Gets a singleton instance of this class, creating one if it doesn't yet exist.

Returns:

A singleton instance

setDefaultWebEngine

public static void setDefaultWebEngine(IWebEngine e)

Set the WebEngine that this runtime should use.

Parameters:

e - The underlying WebEngine to use.

execute

public netscape.javascript.JSObject execute(String command)

Execute the specified command returning a value (if any)

Specified by:

execute in interface IJavascriptRuntime

Parameters:

command - The JavaScript command to execute

Returns:

The underlying JavaScript object that was returned by the script.

getConstructor

public String getConstructor(String javascriptObjectType,
                             Object... args)

Gets a constructor as a string which then can be passed to the execute().

Specified by:

getConstructor in interface IJavascriptRuntime

Parameters:

javascriptObjectType - The type of JavaScript object to create

args - The args of the constructor

Returns:

A string which can be passed to the JavaScript environment to create a new object.

getArrayConstructor

public String getArrayConstructor(String javascriptObjectType,
                                  Object[] ary)

Gets an array parameter constructor as a String, which then can be passed to the execute() method.

Specified by:

getArrayConstructor in interface IJavascriptRuntime

Parameters:

javascriptObjectType - type The type of JavaScript object array to create

ary - The array elements

Returns:

A string which can be passed to the JavaScript environment to create a new array.

getFunction

public String getFunction(String variable,
                          String function,
                          Object... args)

Gets a function as a String, which then can be passed to the execute() method.

Specified by:

getFunction in interface IJavascriptRuntime

Parameters:

variable - The variable to invoke the function on.

function - The function to invoke

args - Arguments the function requires

Returns:

A string which can be passed to the JavaScript environment to invoke the function

getFunction

public String getFunction(String function,
                          Object... args)

Gets a function as a String, which then can be passed to the execute() method.

Specified by:

getFunction in interface IJavascriptRuntime

Parameters:

function - The function to invoke

args - Arguments the function requires

Returns:

A string which can be passed to the JavaScript environment to invoke the function

getArrayFunction

public String getArrayFunction(String function,
                               Object[] ary)

Gets an array function as a String, which then can be passed to the execute() method.

Specified by:

getArrayFunction in interface IJavascriptRuntime

Parameters:

function - The function to invoke

ary - The array of arguments to pass to the function.

Returns:

A string which can be passed to the JavaScript environment to invoke the function

getArgString

protected String getArgString(Object arg)

Takes the specified object and converts the argument to a String.

Parameters:

arg - The object to convert

Returns:

A String representation of the argument.