Examples of ptolemy.kernel.util.StringAttribute

ptolemy.kernel.util.StringAttribute
An attribute that has a string value. Use setExpression() to define the value, as in for example
```
 attribute.setExpression("xxx"); 
```
The default value of the string contained by this attribute is the empty string.
By default, an instance of this class is fully visible in a user interface. The visibility is indicated to the user interface when the user interface calls the getVisibility() method of this class and the value Settable.FULL is returned to the userInterface.
Note that the string value within StringAttribute cannot reference other StringAttributes or Parameters, so if an actor has a public StringAttribute, then one cannot make the value of that attribute dependent on a value higher in the hierarchy. Usually, actors have public ptolemy.data.expr.Parameters instead of public StringAttributes so that the value can reference other parameters. The primary reason to use StringAttribute is if you want a string that will not be parsed and you do not want to type a leading a trailing double quote. @see Settable#FULL @author Edward A. Lee @version $Id: StringAttribute.java,v 1.57 2006/09/16 11:20:46 eal Exp $ @since Ptolemy II 1.0 @Pt.ProposedRating Green (eal) @Pt.AcceptedRating Green (cxh)

     *   by the proposed container.
     */
    public PythonScript(CompositeEntity container, String name)
            throws NameDuplicationException, IllegalActionException {
        super(container, name);
        script = new StringAttribute(this, "script");


        // Set the visibility to expert, as casual users should
        // not see the script.  This is particularly true if one
        // installs an actor that is an instance of this with a
        // particular script in the library.

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        falseOutput = new TypedIOPort(this, "falseOutput", false, true);
        trueOutput.setTypeAtLeast(input);
        falseOutput.setTypeAtLeast(input);


        // Put the control input on the bottom of the actor.
        StringAttribute controlCardinal = new StringAttribute(control,
                "_cardinal");
        controlCardinal.setExpression("SOUTH");
    }

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    public Effigy getEffigy(String identifier) {
        Iterator entities = entityList(Effigy.class).iterator();


        while (entities.hasNext()) {
            Effigy entity = (Effigy) entities.next();
            StringAttribute id = (StringAttribute) entity
                    .getAttribute("identifier");


            if (id != null) {
                String idString = id.getExpression();


                if (idString.equals(identifier)) {
                    return entity;
                }
            }

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     */
    public EmbeddedCActor(CompositeEntity container, String name)
            throws NameDuplicationException, IllegalActionException {
        super(container, name);


        embeddedCCode = new StringAttribute(this, "embeddedCCode");


        // Set the visibility to expert, as casual users should
        // not see the C code.  This is particularly true if one
        // installs an actor that is an instance of this with
        // particular C code in the library.

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        control = new TypedIOPort(this, "control", true, false);
        control.setTypeEquals(BaseType.INT);


        // Put the control input on the bottom of the actor.
        StringAttribute controlCardinal = new StringAttribute(control,
                "_cardinal");
        controlCardinal.setExpression("SOUTH");
    }

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        // contain actors that are non-strict.


        enable = new TypedIOPort(this, "enable", true, false);
        enable.setTypeEquals(BaseType.BOOLEAN);


        StringAttribute controlCardinal = new StringAttribute(enable,
                "_cardinal");
        controlCardinal.setExpression("SOUTH");


        Location location = new Location(enable, "_location");
        location.setExpression("[140.0, 35.0]");


        // Create an inside director.

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     */
    public ButtonTime(CompositeEntity container, String name)
            throws IllegalActionException, NameDuplicationException {
        super(container, name);


        text = new StringAttribute(this, "text");
        text.setExpression("Click!");


        _self = this;
    }

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     *   an actor already in the container.
     */
    public Undefined(CompositeEntity container, String name)
            throws IllegalActionException, NameDuplicationException {
        super(container, name);
        outputType = new StringAttribute(this, "outputType");
        outputType.setExpression("int");
        attributeChanged(outputType);
    }

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        super(container, name);


        control = new TypedIOPort(this, "control", true, false);
        control.setTypeEquals(BaseType.BOOLEAN);


        StringAttribute controlCardinal = new StringAttribute(control,
                "_cardinal");
        controlCardinal.setExpression("SOUTH");


        output.setTypeAtLeast(input);
    }

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                + "style=\"fill:white\"/>\n"
                + "<polyline points=\"0,20 0,0\"/>\n"
                + "<polyline points=\"-30,-0 -10,0 10,-7\"/>\n"
                + "<polyline points=\"10,0 30,0\"/>\n" + "</svg>\n");


        StringAttribute cardinality = new StringAttribute(trigger, "_cardinal");
        cardinality.setExpression("SOUTH");
    }

View Full Code Here

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