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java.lang.Objectorg.mozilla.javascript.NativeJavaObject
public class NativeJavaObject
This class reflects non-Array Java objects into the JavaScript environment. It reflect fields directly, and uses NativeJavaMethod objects to reflect (possibly overloaded) methods.
NativeJavaArray,
NativeJavaPackage,
NativeJavaClass,
Serialized Form| Field Summary | |
|---|---|
protected java.lang.Object |
javaObject
|
protected org.mozilla.javascript.JavaMembers |
members
|
protected Scriptable |
parent
The parent scope of this object. |
protected Scriptable |
prototype
The prototype of this object. |
protected java.lang.Class<?> |
staticType
|
| Fields inherited from interface org.mozilla.javascript.Scriptable |
|---|
NOT_FOUND |
| Constructor Summary | |
|---|---|
NativeJavaObject()
|
|
NativeJavaObject(Scriptable scope,
java.lang.Object javaObject,
java.lang.Class<?> staticType)
|
|
NativeJavaObject(Scriptable scope,
java.lang.Object javaObject,
java.lang.Class<?> staticType,
boolean isAdapter)
|
|
| Method Summary | |
|---|---|
static boolean |
canConvert(java.lang.Object fromObj,
java.lang.Class<?> to)
Determine whether we can/should convert between the given type and the desired one. |
static java.lang.Object |
coerceType(java.lang.Class<?> type,
java.lang.Object value)
Deprecated. as of 1.5 Release 4 |
void |
delete(int index)
Removes a property from this object. |
void |
delete(java.lang.String name)
Removes a property from this object. |
java.lang.Object |
get(int index,
Scriptable start)
Get a property from the object selected by an integral index. |
java.lang.Object |
get(java.lang.String name,
Scriptable start)
Get a named property from the object. |
java.lang.String |
getClassName()
Get the name of the set of objects implemented by this Java class. |
java.lang.Object |
getDefaultValue(java.lang.Class<?> hint)
Get the default value of the object with a given hint. |
java.lang.Object[] |
getIds()
Get an array of property ids. |
Scriptable |
getParentScope()
Returns the parent (enclosing) scope of the object. |
Scriptable |
getPrototype()
Get the prototype of the object. |
boolean |
has(int index,
Scriptable start)
Indicates whether or not an indexed property is defined in an object. |
boolean |
has(java.lang.String name,
Scriptable start)
Indicates whether or not a named property is defined in an object. |
boolean |
hasInstance(Scriptable value)
The instanceof operator. |
protected void |
initMembers()
|
void |
put(int index,
Scriptable start,
java.lang.Object value)
Sets an indexed property in this object. |
void |
put(java.lang.String name,
Scriptable start,
java.lang.Object value)
Sets a named property in this object. |
void |
setParentScope(Scriptable m)
Sets the parent (enclosing) scope of the object. |
void |
setPrototype(Scriptable m)
Sets the prototype of the object. |
java.lang.Object |
unwrap()
Unwrap the object by returning the wrapped value. |
static java.lang.Object |
wrap(Scriptable scope,
java.lang.Object obj,
java.lang.Class<?> staticType)
Deprecated. Use Context.getWrapFactory() together with calling WrapFactory.wrap(Context, Scriptable, Object, Class) |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
|---|
protected Scriptable prototype
protected Scriptable parent
protected transient java.lang.Object javaObject
protected transient java.lang.Class<?> staticType
protected transient org.mozilla.javascript.JavaMembers members
| Constructor Detail |
|---|
public NativeJavaObject()
public NativeJavaObject(Scriptable scope,
java.lang.Object javaObject,
java.lang.Class<?> staticType)
public NativeJavaObject(Scriptable scope,
java.lang.Object javaObject,
java.lang.Class<?> staticType,
boolean isAdapter)
| Method Detail |
|---|
protected void initMembers()
public boolean has(java.lang.String name,
Scriptable start)
Scriptable
The property is specified by a String name
as defined for the get method.
has in interface Scriptablename - the name of the propertystart - the object in which the lookup began
Scriptable.get(String, Scriptable),
ScriptableObject.getProperty(Scriptable, String)
public boolean has(int index,
Scriptable start)
Scriptable
The property is specified by an integral index
as defined for the get method.
has in interface Scriptableindex - the numeric index for the propertystart - the object in which the lookup began
Scriptable.get(int, Scriptable),
ScriptableObject.getProperty(Scriptable, int)
public java.lang.Object get(java.lang.String name,
Scriptable start)
Scriptableget that takes an
integer:
| JavaScript code | Java code |
|---|---|
| a.b | a.get("b", a) |
| a["foo"] | a.get("foo", a) |
| a[3] | a.get(3, a) |
| a["3"] | a.get(3, a) |
| a[3.0] | a.get(3, a) |
| a["3.0"] | a.get("3.0", a) |
| a[1.1] | a.get("1.1", a) |
| a[-4] | a.get(-4, a) |
The values that may be returned are limited to the following:
get in interface Scriptablename - the name of the propertystart - the object in which the lookup began
Context.getUndefinedValue()
public java.lang.Object get(int index,
Scriptable start)
Scriptableget(String, Scriptable) except that
an integral index is used to select the property.
get in interface Scriptableindex - the numeric index for the propertystart - the object in which the lookup began
Scriptable.get(String,Scriptable)
public void put(java.lang.String name,
Scriptable start,
java.lang.Object value)
Scriptable
The property is specified by a string name
as defined for get.
The possible values that may be passed in are as defined for
get. A class that implements this method may choose
to ignore calls to set certain properties, in which case those
properties are effectively read-only.
For properties defined in a prototype chain,
use putProperty in ScriptableObject.
Note that if a property a is defined in the prototype p
of an object o, then evaluating o.a = 23 will cause
set to be called on the prototype p with
o as the start parameter.
To preserve JavaScript semantics, it is the Scriptable
object's responsibility to modify o.
This design allows properties to be defined in prototypes and implemented in terms of getters and setters of Java values without consuming slots in each instance.
The values that may be set are limited to the following:
Arbitrary Java objects may be wrapped in a Scriptable by first calling
Context.toObject. This allows the property of a JavaScript
object to contain an arbitrary Java object as a value.
Note that has will be called by the runtime first before
set is called to determine in which object the
property is defined.
Note that this method is not expected to traverse the prototype chain,
which is different from the ECMA [[Put]] operation.
put in interface Scriptablename - the name of the propertystart - the object whose property is being setvalue - value to set the property toScriptable.has(String, Scriptable),
Scriptable.get(String, Scriptable),
ScriptableObject.putProperty(Scriptable, String, Object),
Context.toObject(Object, Scriptable)
public void put(int index,
Scriptable start,
java.lang.Object value)
Scriptable
The property is specified by an integral index
as defined for get.
Identical to put(String, Scriptable, Object) except that
an integral index is used to select the property.
put in interface Scriptableindex - the numeric index for the propertystart - the object whose property is being setvalue - value to set the property toScriptable.has(int, Scriptable),
Scriptable.get(int, Scriptable),
ScriptableObject.putProperty(Scriptable, int, Object),
Context.toObject(Object, Scriptable)public boolean hasInstance(Scriptable value)
ScriptableThe JavaScript code "lhs instanceof rhs" causes rhs.hasInstance(lhs) to be called.
The return value is implementation dependent so that embedded host objects can return an appropriate value. See the JS 1.3 language documentation for more detail.
This operator corresponds to the proposed EMCA [[HasInstance]] operator.
hasInstance in interface Scriptablevalue - The value that appeared on the LHS of the instanceof
operator
public void delete(java.lang.String name)
ScriptableA property can be made permanent by ignoring calls to remove it.
The property is specified by a String name
as defined for get.
To delete properties defined in a prototype chain, see deleteProperty in ScriptableObject.
delete in interface Scriptablename - the identifier for the propertyScriptable.get(String, Scriptable),
ScriptableObject.deleteProperty(Scriptable, String)public void delete(int index)
Scriptableget.
To delete properties defined in a prototype chain,
see deleteProperty in ScriptableObject.
Identical to delete(String) except that
an integral index is used to select the property.
delete in interface Scriptableindex - the numeric index for the propertyScriptable.get(int, Scriptable),
ScriptableObject.deleteProperty(Scriptable, int)public Scriptable getPrototype()
Scriptable
getPrototype in interface Scriptablepublic void setPrototype(Scriptable m)
setPrototype in interface Scriptablem - the prototype to setpublic Scriptable getParentScope()
getParentScope in interface Scriptablepublic void setParentScope(Scriptable m)
setParentScope in interface Scriptablem - the parent scope to setpublic java.lang.Object[] getIds()
Scriptable
getIds in interface Scriptable
public static java.lang.Object wrap(Scriptable scope,
java.lang.Object obj,
java.lang.Class<?> staticType)
Context.getWrapFactory() together with calling WrapFactory.wrap(Context, Scriptable, Object, Class)
public java.lang.Object unwrap()
Wrapper
unwrap in interface Wrapperpublic java.lang.String getClassName()
ScriptableSee ECMA 8.6.2 and 15.2.4.2.
getClassName in interface Scriptablepublic java.lang.Object getDefaultValue(java.lang.Class<?> hint)
Scriptable
A hint of null means "no hint".
See ECMA 8.6.2.6.
getDefaultValue in interface Scriptablehint - the type hint
public static boolean canConvert(java.lang.Object fromObj,
java.lang.Class<?> to)
public static java.lang.Object coerceType(java.lang.Class<?> type,
java.lang.Object value)
Context.jsToJava(Object, Class)
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