com.google.gwt.core.ext.debug

## Class JsoEval

- java.lang.Object
- - com.google.gwt.core.ext.debug.JsoEval

-     public class JsoEval
      extends java.lang.Object

  Provides facilities for debuggers to call methods on `JavaScriptObjects`.

  Because devmode does extensive rewriting of JSO bytecode, debuggers can't figure out how to evaluate JSO method calls. This class can be used directly by users to evaluate JSO methods in their debuggers. Additionally, debuggers with GWT support use this class to transparently evaluate JSO expressions in breakpoints, watch windows, etc.

  Example uses: ``

         JsoEval.call(Element.class, myElement, "getAbsoluteTop");
         JsoEval.call(Node.class, myNode, "cloneNode", Boolean.TRUE);
         JsoEval.call(Element.class, element.getFirstChildElement(), "setPropertyString", "phase",
           "gamma");

- - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `static java.lang.Object` | `call(java.lang.Class klass, java.lang.Object obj, java.lang.String methodName, java.lang.Class[] types, java.lang.Object... args)` Reflectively invokes a method on a JavaScriptObject.
    `static java.lang.Object` | `call(java.lang.Class klass, java.lang.Object obj, java.lang.String methodName, java.lang.Object... args)` A convenience form of `call(Class, Object, String, Class[], Object...)` for use directly by users in a debugger.
    `static java.lang.Object` | `callEx(java.lang.Class klass, java.lang.Object obj, java.lang.String methodName, java.lang.Class[] types, java.lang.Object... args)` Reflectively invokes a method on a JavaScriptObject.
    `static java.lang.Object` | `callEx(java.lang.Class klass, java.lang.Object obj, java.lang.String methodName, java.lang.Object... args)` A convenience form of `call(Class, Object, String, Class[], Object...)` for use directly by users in a debugger.
    `static java.lang.Object` | `callStatic(java.lang.Class klass, java.lang.String methodName, java.lang.Class[] types, java.lang.Object... args)` Reflectively invokes a static method on a JavaScriptObject.
    `static java.lang.Object` | `callStaticEx(java.lang.Class klass, java.lang.String methodName, java.lang.Class[] types, java.lang.Object... args)` Reflectively invokes a static method on a JavaScriptObject.

    - ### Methods inherited from class java.lang.Object

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

- - ### Method Detail

    - #### call

          public static java.lang.Object call(java.lang.Class klass,
                              java.lang.Object obj,
                              java.lang.String methodName,
                              java.lang.Class[] types,
                              java.lang.Object... args)

      Reflectively invokes a method on a JavaScriptObject.
      Parameters:
        `klass` - Either a class of type JavaScriptObject or an interface implemented by a JavaScriptObject. The class must contain the method to be invoked.
        `obj` - The JavaScriptObject to invoke the method on. Must be null if the method is static. Must be not-null if the method is not static
        `methodName` - The name of the method
        `types` - The types of the arguments
        `args` - The values of the arguments
      Returns:
        The result of the method invocation or the failure as a String

    - #### call

          public static java.lang.Object call(java.lang.Class klass,
                              java.lang.Object obj,
                              java.lang.String methodName,
                              java.lang.Object... args)

      A convenience form of `call(Class, Object, String, Class[], Object...)` for use directly by users in a debugger. This method guesses at the types of the method based on the values of `args`.
      Returns:
        The result of the method invocation or the failure as a String

    - #### callEx

          public static java.lang.Object callEx(java.lang.Class klass,
                                java.lang.Object obj,
                                java.lang.String methodName,
                                java.lang.Class[] types,
                                java.lang.Object... args)
                                         throws java.lang.ClassNotFoundException,
                                                java.lang.NoSuchMethodException,
                                                java.lang.reflect.InvocationTargetException,
                                                java.lang.IllegalAccessException

      Reflectively invokes a method on a JavaScriptObject.
      Parameters:
        `klass` - Either a class of type JavaScriptObject or an interface implemented by a JavaScriptObject. The class must contain the method to be invoked.
        `obj` - The JavaScriptObject to invoke the method on. Must be null if the method is static. Must be not-null if the method is not static
        `methodName` - The name of the method
        `types` - The types of the arguments
        `args` - The values of the arguments
      Returns:
        The result of the method invocation
      Throws:
        `java.lang.ClassNotFoundException`
        `java.lang.NoSuchMethodException`
        `java.lang.reflect.InvocationTargetException`
        `java.lang.IllegalAccessException`

    - #### callEx

          public static java.lang.Object callEx(java.lang.Class klass,
                                java.lang.Object obj,
                                java.lang.String methodName,
                                java.lang.Object... args)
                                         throws java.lang.ClassNotFoundException,
                                                java.lang.NoSuchMethodException,
                                                java.lang.reflect.InvocationTargetException,
                                                java.lang.IllegalAccessException

      A convenience form of `call(Class, Object, String, Class[], Object...)` for use directly by users in a debugger. This method guesses at the types of the method based on the values of `args`.
      Throws:
        `java.lang.ClassNotFoundException`
        `java.lang.NoSuchMethodException`
        `java.lang.reflect.InvocationTargetException`
        `java.lang.IllegalAccessException`

    - #### callStatic

          public static java.lang.Object callStatic(java.lang.Class klass,
                                    java.lang.String methodName,
                                    java.lang.Class[] types,
                                    java.lang.Object... args)

      Reflectively invokes a static method on a JavaScriptObject. Has the same effect as calling `call(klass, null, methodName, types, args)`
      Returns:
        The result of the method invocation or the failure as a String

    - #### callStaticEx

          public static java.lang.Object callStaticEx(java.lang.Class klass,
                                      java.lang.String methodName,
                                      java.lang.Class[] types,
                                      java.lang.Object... args)
                                               throws java.lang.ClassNotFoundException,
                                                      java.lang.NoSuchMethodException,
                                                      java.lang.reflect.InvocationTargetException,
                                                      java.lang.IllegalAccessException

      Reflectively invokes a static method on a JavaScriptObject. Has the same effect as calling `call(klass, null, methodName, types, args)`
      Throws:
        `java.lang.ClassNotFoundException`
        `java.lang.NoSuchMethodException`
        `java.lang.reflect.InvocationTargetException`
        `java.lang.IllegalAccessException`