Examples of Settable

com.amazonaws.services.simpleworkflow.flow.core.Settable
It is an implementation of Promise, which exposes an additional {@link #set(Object)} and {@link #chain(Promise)} methods. Calling{@link #set(Object)} puts it in ready state, with value retrievable through{@link #get()} method. {@link #chain(Promise)} links state of this Settableto another Promise. When another promise changes its state to ready the chained one is also becomes ready.
Use settable.set(null) to set Settable<Void> to the ready state.
Settable is frequently used to return data from code contained in anonymous classes. For example:
```
  Promise<Integer> foo() { final Settable<Integer> result = new Settable<Integer>(); new TryCatch() { protected void doTry() throws Throwable { Promise<Integer> activity1Result = activities.callActivity1(); result.chain(activity1Result); } protected void doCatch(Throwable e) throws Throwable { Promise<Void> handled = handleFailure(e); rethrow(e, handled); } }; return result; }  
```
@param < V> The type of value accepted and returned by this Settable.Use {@link Void} to represent Promise that indicates completion ofoperation that doesn't return a value.
com.bitmovers.maui.components.foundation.Settable
Interface for settable components.
ptolemy.kernel.util.Settable
This is an interface for attributes that can have their values externally set. An attribute class that implements this interface has to be able to have a value set by a string, via the setExpression() method. A string representation is returned by the getExpression() method. An expression may be an ordinary string with no further interpretation, or it may be a string that needs to be evaluated. In the latter case, an implementation of this attribute may not evaluate the string when the setExpression() method is called. It may instead only evaluate the string when the validate() method is called. Often this will not be called until the value of the expression is actually needed (this is known as "lazy evaluation"). Such an implementation will defer notification of listeners and the container until the string is evaluated. In a typical use of this interface, therefore, it is necessary to be sure that validate() is called sometime after setExpression() is called.
In addition, an attribute class that implements this interface needs to maintain a list of listeners that are informed whenever the value of the attribute changes. It should inform those listeners whenever setExpression() is called.
Among other uses, this interface marks attributes whose value can be set via the value attribute of a MoML property element. For example, if class XXX implements Settable, then the following is valid MoML:
```
 <property name="xxx" class="XXX" value="yyy"/> 
```
This interface also supports annotations that hint to a user interface the level of visibility that an instance should have. The visibility is specified as one of the static instances of the inner class Visibility, currently NONE, EXPERT, FULL, and NOT_EDITABLE NONE indicates that the user should never see the instance, and should not be able to set its value through the user interface. EXPERT means that only expert users should see the instance. FULL means that the instance is always visible, and a user interface should always allow it to be set. NOT_EDITABLE is similar to FULL, except that the value of the expression is visible, but not editable by the user. This is commonly used for feedback from the model. @author Edward A. Lee @version $Id: Settable.java,v 1.32 2006/09/21 15:09:38 cxh Exp $ @since Ptolemy II 1.0 @Pt.ProposedRating Green (eal) @Pt.AcceptedRating Green (cxh)

Examples of ptolemy.kernel.util.Settable

     *  the name of the attribute.  Attach the attribute to the created entry.
     *
     *  @param query The query into which to add the entry.
     */
    public void addEntry(PtolemyQuery query) {
        Settable container = (Settable) getContainer();
        String name = container.getName();
        String defaultValue = "";
        defaultValue = container.getExpression();
        query.addDisplay(name, container.getDisplayName(), defaultValue);
        query.attachParameter(container, name);
    }

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Examples of ptolemy.kernel.util.Settable

        }


        Iterator parameters = object.attributeList(Settable.class).iterator();


        while (parameters.hasNext()) {
            Settable param = (Settable) parameters.next();


            // Skip if the parameter is not visible.
            if (!Configurer.isVisible(_object, param)) {
                continue;
            }


            // Get the current style.
            boolean foundOne = false;
            Iterator styles = ((NamedObj) param).attributeList(
                    ParameterEditorStyle.class).iterator();
            ParameterEditorStyle foundStyle = null;


            while (styles.hasNext()) {
                foundOne = true;
                foundStyle = (ParameterEditorStyle) styles.next();
            }


            List styleList = new ArrayList();


            // The index of the default;
            int defaultIndex = 0;


            if (param.getVisibility() == Settable.NOT_EDITABLE) {
                // If the parameter is set to NOT_EDITABLE visibility,
                // then only a fixed style is possible.
                styleList.add("Fixed");
                defaultIndex = 0;
            } else {
                int count = 0;


                // Reduce the list of parameters
                for (int i = 0; (i < _parameterStyles.length)
                        && (_parameterStyles[i] != null); i++) {
                    if (foundOne
                            && (_parameterStyles[i].getClass() == foundStyle
                                    .getClass())) {
                        defaultIndex = count;


                        if (foundStyle.acceptable(param)) {
                            styleList.add(_parameterStyles[i].getName());
                            count++;
                        }
                    } else if (_parameterStyles[i].acceptable(param)) {
                        styleList.add(_parameterStyles[i].getName());
                        count++;
                    }
                }
            }


            String[] styleArray = (String[]) styleList
                    .toArray(new String[styleList.size()]);


            addChoice(param.getName(), param.getName(), styleArray,
                    styleArray[defaultIndex]);
        }


        // Add the expert mode box.
        _originalExpertMode = _object.getAttribute("_expertMode") != null;

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Examples of ptolemy.kernel.util.Settable

                // gets anything added to it!
                Iterator entries = _originalValues.entrySet().iterator();


                while (entries.hasNext()) {
                    Map.Entry entry = (Map.Entry) entries.next();
                    Settable param = (Settable) _object
                            .getAttribute((String) entry.getKey());


                    try {
                        param.setExpression((String) entry.getValue());
                    } catch (IllegalActionException ex) {
                        throw new InternalErrorException(
                                "Cannot restore style value!");
                    }
                }

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Examples of ptolemy.kernel.util.Settable

     *  @param query The query into which to add the entry.
     *  @exception IllegalActionException If the containing attribute
     *   has a value that cannot be edited using this style.
     */
    public void addEntry(PtolemyQuery query) throws IllegalActionException {
        Settable container = (Settable) getContainer();
        String name = container.getName();
        List paramList = attributeList(Settable.class);
        Settable[] choices = (Settable[]) paramList
                .toArray(new Settable[paramList.size()]);
        String[] values = new String[choices.length];


        for (int i = 0; i < choices.length; i++) {
            values[i] = choices[i].getExpression();
        }


        String defaultChoice = container.getExpression();
        query.addChoice(name, container.getDisplayName(), values,
                defaultChoice, _isEditable, PtolemyQuery
                        .preferredBackgroundColor(container), PtolemyQuery
                        .preferredForegroundColor(container));
        query.attachParameter(container, name);
    }

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Examples of ptolemy.kernel.util.Settable

     *  the name of the attribute.  Attach the attribute to the created entry.
     *
     *  @param query The query into which to add the entry.
     */
    public void addEntry(PtolemyQuery query) {
        Settable container = (Settable) getContainer();
        String name = container.getName();
        String defaultValue = "";
        defaultValue = container.getExpression();
        query.addLine(name, container.getDisplayName(), defaultValue,
                PtolemyQuery.preferredBackgroundColor(container), PtolemyQuery
                        .preferredForegroundColor(container));
        query.attachParameter(container, name);
    }

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