Java Doc for ActionExpression.java in  » IDE-Eclipse » ui-workbench » org » eclipse » ui » internal » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » IDE Eclipse » ui workbench » org.eclipse.ui.internal   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.eclipse.ui.internal.ActionExpression ActionExpression public class ActionExpression (Code) An ActionExpression is used to evaluate the enablement / visibility criteria for an action. Field Summary final public static  String EXP_TYPE_AND      Constant definition for AND. final public static  String EXP_TYPE_NOT      Constant definition for NOT. final public static  String EXP_TYPE_OBJECT_CLASS      Constant definition for objectClass. final public static  String EXP_TYPE_OBJECT_STATE      Constant definition for objectState. final public static  String EXP_TYPE_OR      Constant definition for OR. final public static  String EXP_TYPE_PLUG_IN_STATE      Constant definition for pluginState. final public static  String EXP_TYPE_SYSTEM_PROPERTY      Constant definition for systemProperty. Constructor Summary public   ActionExpression(IConfigurationElement element)      Creates an action expression for the given configuration element. public   ActionExpression(String expressionType, String expressionValue)      Create an instance of the receiver with the given expression type and value. Method Summary final public  boolean equals(Object object)      public  String[] extractObjectClasses()      Extract the object class test from the expression. final public  int hashCode()      Computes the hash code for this object based on the id. public  boolean isEnabledFor(IStructuredSelection selection)      Returns whether the expression is valid for all elements of the given selection. public  boolean isEnabledFor(Object object)      Returns whether the expression is valid for the given object. public  boolean isEnabledForExpression(Object object, String expressionType)      Returns whether or not the receiver is potentially valid for the object via just the extension type. public  Collection valuesForExpression(String expressionType)      Return the values of the expression type that the receiver is enabled for. Field Detail EXP_TYPE_AND final public static String EXP_TYPE_AND(Code) Constant definition for AND. EXP_TYPE_NOT final public static String EXP_TYPE_NOT(Code) Constant definition for NOT. EXP_TYPE_OBJECT_CLASS final public static String EXP_TYPE_OBJECT_CLASS(Code) Constant definition for objectClass. EXP_TYPE_OBJECT_STATE final public static String EXP_TYPE_OBJECT_STATE(Code) Constant definition for objectState. EXP_TYPE_OR final public static String EXP_TYPE_OR(Code) Constant definition for OR. EXP_TYPE_PLUG_IN_STATE final public static String EXP_TYPE_PLUG_IN_STATE(Code) Constant definition for pluginState. EXP_TYPE_SYSTEM_PROPERTY final public static String EXP_TYPE_SYSTEM_PROPERTY(Code) Constant definition for systemProperty. Constructor Detail ActionExpression public ActionExpression(IConfigurationElement element)(Code) Creates an action expression for the given configuration element. Parameters:   element - The element to build the expression from. ActionExpression public ActionExpression(String expressionType, String expressionValue)(Code) Create an instance of the receiver with the given expression type and value. Currently the only supported expression type is EXP_TYPE_OBJECT_CLASS. Parameters:   expressionType - The expression constant we are creating an instance of. Parameters:   expressionValue - The name of the class we are creating an expression for. Method Detail equals final public boolean equals(Object object)(Code) extractObjectClasses public String[] extractObjectClasses()(Code) Extract the object class test from the expression. This allows clients (e.g. the decorator manager) to handle object class testing in a more optimized way. This method removes the objectClass test from the expression and returns the object class. The expression is not changed and a null is returned if no object class is found. the object class or null if none was found. hashCode final public int hashCode()(Code) Computes the hash code for this object based on the id. The hash code for this object. isEnabledFor public boolean isEnabledFor(IStructuredSelection selection)(Code) Returns whether the expression is valid for all elements of the given selection. Parameters:   selection - the structured selection to use boolean whether the expression is valid for the selection. isEnabledFor public boolean isEnabledFor(Object object)(Code) Returns whether the expression is valid for the given object. Parameters:   object - the object to validate against (can be null) boolean whether the expression is valid for the object. isEnabledForExpression public boolean isEnabledForExpression(Object object, String expressionType)(Code) Returns whether or not the receiver is potentially valid for the object via just the extension type. Currently the only supported expression type is EXP_TYPE_OBJECT_CLASS. Parameters:   object - the object to validate against (can be null) Parameters:   expressionType - the expression type to consider boolean whether the expression is potentially valid for theobject. valuesForExpression public Collection valuesForExpression(String expressionType)(Code) Return the values of the expression type that the receiver is enabled for. If the receiver is not enabled for the expressionType then return null. Parameters:   expressionType - the expression type to consider Collection if there are values for this expression ornull if this is not possible in the receiver orany of it's children Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)