Package org.mozilla.javascript

Class ImporterTopLevel

java.lang.Object

org.mozilla.javascript.ScriptableObject

org.mozilla.javascript.IdScriptableObject

org.mozilla.javascript.TopLevel

org.mozilla.javascript.ImporterTopLevel

All Implemented Interfaces:

Serializable, ConstProperties, DebuggableObject, IdFunctionCall, Scriptable, SymbolScriptable

public class ImporterTopLevel
extends TopLevel

Class ImporterTopLevel

This class defines a ScriptableObject that can be instantiated as a top-level ("global") object to provide functionality similar to Java's "import" statement.

This class can be used to create a top-level scope using the following code:

  Scriptable scope = new ImporterTopLevel(cx);
 

Then JavaScript code will have access to the following methods:

• importClass - will "import" a class by making its unqualified name available as a property of the top-level scope
• importPackage - will "import" all the classes of the package by searching for unqualified names as classes qualified by the given package.

The following code from the shell illustrates this use:

 js> importClass(java.io.File)
 js> f = new File('help.txt')
 help.txt
 js> importPackage(java.util)
 js> v = new Vector()
 []
 

Author:

Norris Boyd

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.mozilla.javascript.TopLevel

TopLevel.Builtins

Nested classes/interfaces inherited from class org.mozilla.javascript.ScriptableObject

ScriptableObject.KeyComparator

Field Summary

Fields inherited from class org.mozilla.javascript.ScriptableObject

CONST, DONTENUM, EMPTY, PERMANENT, READONLY, UNINITIALIZED_CONST

Fields inherited from interface org.mozilla.javascript.Scriptable

NOT_FOUND

Constructor Summary

Constructors

Constructor	Description
ImporterTopLevel()
ImporterTopLevel(Context cx)
ImporterTopLevel(Context cx, boolean sealed)

Method Summary

Modifier and Type	Method	Description
Object	execIdCall(IdFunctionObject f, Context cx, Scriptable scope, Scriptable thisObj, Object[] args)	'thisObj' will be null if invoked as constructor, in which case * instance of Scriptable should be returned.
protected int	findPrototypeId(String s)
Object	get(String name, Scriptable start)	Returns the value of the named property or NOT_FOUND.
String	getClassName()	Return the name of the class.
boolean	has(String name, Scriptable start)	Returns true if the named property is defined.
void	importPackage(Context cx, Scriptable thisObj, Object[] args, Function funObj)	Deprecated. Kept only for compatibility.
static void	init(Context cx, Scriptable scope, boolean sealed)
protected void	initPrototypeId(int id)
void	initStandardObjects(Context cx, boolean sealed)

Methods inherited from class org.mozilla.javascript.TopLevel

cacheBuiltins, getBuiltinCtor, getBuiltinCtor, getBuiltinPrototype, getBuiltinPrototype

Methods inherited from class org.mozilla.javascript.IdScriptableObject

activatePrototypeMap, addIdFunctionProperty, defaultGet, defaultHas, defaultPut, defineOwnProperty, delete, delete, ensureType, ensureType, exportAsJSClass, fillConstructorProperties, findInstanceIdInfo, findInstanceIdInfo, findPrototypeId, get, getAttributes, getAttributes, getInstanceIdName, getInstanceIdValue, getMaxInstanceId, getOwnPropertyDescriptor, has, hasPrototypeMap, initPrototypeConstructor, initPrototypeMethod, initPrototypeMethod, initPrototypeMethod, initPrototypeValue, initPrototypeValue, instanceIdInfo, put, put, setAttributes, setInstanceIdAttributes, setInstanceIdValue

Methods inherited from class org.mozilla.javascript.ScriptableObject

applyDescriptorToAttributeBitset, associateValue, avoidObjectDetection, buildDataDescriptor, callMethod, callMethod, checkPropertyChange, checkPropertyDefinition, defineClass, defineClass, defineClass, defineConst, defineConstProperty, defineFunctionProperties, defineOwnProperties, defineOwnProperty, defineProperty, defineProperty, defineProperty, defineProperty, defineProperty, defineProperty, defineProperty, defineProperty, delete, deleteProperty, deleteProperty, ensureScriptable, ensureScriptableObject, ensureSymbolScriptable, equivalentValues, get, get, getAllIds, getArrayPrototype, getAssociatedValue, getAttributes, getAttributes, getAttributes, getClassPrototype, getDefaultValue, getDefaultValue, getExternalArrayData, getExternalArrayLength, getFunctionPrototype, getGeneratorFunctionPrototype, getGetterOrSetter, getGetterOrSetter, getIds, getObjectPrototype, getParentScope, getProperty, getProperty, getProperty, getPropertyIds, getPrototype, getTopLevelScope, getTopScopeValue, getTypedProperty, getTypedProperty, getTypeOf, has, hasInstance, hasProperty, hasProperty, hasProperty, isAccessorDescriptor, isConst, isDataDescriptor, isEmpty, isExtensible, isFalse, isGenericDescriptor, isGetterOrSetter, isSealed, isTrue, preventExtensions, put, putConst, putConstProperty, putProperty, putProperty, putProperty, querySlot, redefineProperty, sameValue, sealObject, setAttributes, setAttributes, setAttributes, setAttributes, setCommonDescriptorProperties, setExternalArrayData, setGetterOrSetter, setParentScope, setPrototype, size

Methods inherited from class java.lang.Object

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

Constructor Details

ImporterTopLevel

public ImporterTopLevel()

ImporterTopLevel

public ImporterTopLevel(Context cx)

ImporterTopLevel

public ImporterTopLevel(Context cx,
 boolean sealed)

Method Details

getClassName

public String getClassName()

Description copied from class: ScriptableObject

Return the name of the class.

This is typically the same name as the constructor. Classes extending ScriptableObject must implement this abstract method.

Specified by:

getClassName in interface Scriptable

Overrides:

getClassName in class TopLevel

init

public static void init(Context cx,
 Scriptable scope,
 boolean sealed)

initStandardObjects

public void initStandardObjects(Context cx,
 boolean sealed)

has

public boolean has(String name,
 Scriptable start)

Description copied from class: ScriptableObject

Returns true if the named property is defined.

Specified by:

has in interface Scriptable

Overrides:

has in class IdScriptableObject

Parameters:

name - the name of the property

start - the object in which the lookup began

Returns:

true if and only if the property was found in the object

See Also:

• Scriptable.get(String, Scriptable)
• ScriptableObject.getProperty(Scriptable, String)

get

public Object get(String name,
 Scriptable start)

Description copied from class: ScriptableObject

Returns the value of the named property or NOT_FOUND.

If the property was created using defineProperty, the appropriate getter method is called.

Specified by:

get in interface Scriptable

Overrides:

get in class IdScriptableObject

Parameters:

name - the name of the property

start - the object in which the lookup began

Returns:

the value of the property (may be null), or NOT_FOUND

See Also:

• Context.getUndefinedValue()

importPackage

@Deprecated
public void importPackage(Context cx,
 Scriptable thisObj,
 Object[] args,
 Function funObj)

Deprecated.

Kept only for compatibility.

initPrototypeId

protected void initPrototypeId(int id)

Overrides:

initPrototypeId in class IdScriptableObject

execIdCall

public Object execIdCall(IdFunctionObject f,
 Context cx,
 Scriptable scope,
 Scriptable thisObj,
 Object[] args)

Description copied from class: IdScriptableObject

'thisObj' will be null if invoked as constructor, in which case * instance of Scriptable should be returned.

Specified by:

execIdCall in interface IdFunctionCall

Overrides:

execIdCall in class IdScriptableObject

findPrototypeId

protected int findPrototypeId(String s)

Overrides:

findPrototypeId in class IdScriptableObject