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)

                + " r=\"5\" style=\"fill:white\"/>\n"
                + "<circle cx=\"15\" cy=\"0\""
                + " r=\"5\" style=\"fill:white\"/>\n" + "</svg>\n");


        try {
            initialStateName = new StringAttribute(this, "initialStateName");
            initialStateName.setExpression("");
            initialStateName.setVisibility(Settable.EXPERT);


            finalStateNames = new StringAttribute(this, "finalStateNames");
            finalStateNames.setExpression("");
            finalStateNames.setVisibility(Settable.EXPERT);
        } catch (KernelException ex) {
            // This should never happen.
            throw new InternalErrorException("Constructor error "

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        channel = new TypedIOPort(this, "channel");
        channel.setOutput(true);
        channel.setTypeEquals(BaseType.INT);


        // Add an attribute to get the port placed on the bottom.
        StringAttribute channelCardinal = new StringAttribute(channel,
                "_cardinal");
        channelCardinal.setExpression("SOUTH");


        _attachText("_iconDescription", "<svg>\n"
                + "<polygon points=\"-10,20 10,10 10,-10, -10,-20\" "
                + "style=\"fill:red\"/>\n" + "</svg>\n");

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        // Add a hint to indicate to the PtolemyQuery class to open with a text style.
        Variable variable = new Variable(annotation, "_textHeightHint");
        variable.setExpression("5");
        variable.setPersistent(false);


        guardExpression = new StringAttribute(this, "guardExpression");
        // Add a hint to indicate to the PtolemyQuery class to open with a text style.
        variable = new Variable(guardExpression, "_textHeightHint");
        variable.setExpression("5");
        variable.setPersistent(false);


        outputActions = new OutputActionsAttribute(this, "outputActions");
        // Add a hint to indicate to the PtolemyQuery class to open with a text style.
        variable = new Variable(outputActions, "_textHeightHint");
        variable.setExpression("5");
        variable.setPersistent(false);


        setActions = new CommitActionsAttribute(this, "setActions");
        // Add a hint to indicate to the PtolemyQuery class to open with a text style.
        variable = new Variable(setActions, "_textHeightHint");
        variable.setExpression("5");
        variable.setPersistent(false);


        exitAngle = new Parameter(this, "exitAngle");
        exitAngle.setVisibility(Settable.NONE);
        exitAngle.setExpression("PI/5.0");
        exitAngle.setTypeEquals(BaseType.DOUBLE);
        gamma = new Parameter(this, "gamma");
        gamma.setVisibility(Settable.NONE);
        gamma.setExpression("0.0");
        gamma.setTypeEquals(BaseType.DOUBLE);
        reset = new Parameter(this, "reset");
        reset.setTypeEquals(BaseType.BOOLEAN);
        reset.setToken(BooleanToken.FALSE);
        preemptive = new Parameter(this, "preemptive");
        preemptive.setTypeEquals(BaseType.BOOLEAN);
        preemptive.setToken(BooleanToken.FALSE);


        // default attributes.
        defaultTransition = new Parameter(this, "defaultTransition");
        defaultTransition.setTypeEquals(BaseType.BOOLEAN);
        defaultTransition.setToken(BooleanToken.FALSE);


        // Nondeterministic attributes.
        nondeterministic = new Parameter(this, "nondeterministic");
        nondeterministic.setTypeEquals(BaseType.BOOLEAN);
        nondeterministic.setToken(BooleanToken.FALSE);


        // Add refinement name parameter
        refinementName = new StringAttribute(this, "refinementName");
    }

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                "tokenConsumptionRate");
        control_tokenConsumptionRate.setVisibility(Settable.NOT_EDITABLE);
        control_tokenConsumptionRate.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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     */
    public AttributeValueAttribute(NamedObj container, String name)
            throws IllegalActionException, NameDuplicationException {
        super(container, name);


        attributeName = new StringAttribute(this, "attributeName");
        displayWidth = new Parameter(this, "displayWidth");
        displayWidth.setExpression("6");
        displayWidth.setTypeEquals(BaseType.INT);
    }

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     */
    public String getParameter(String name) throws IllegalActionException {
        Attribute attribute = getAttribute(name);


        if (attribute instanceof StringAttribute) {
            StringAttribute stringAttribute = (StringAttribute) attribute;
            return stringAttribute.getExpression();
        } else if (attribute instanceof Parameter) {
            Parameter parameter = (Parameter) attribute;
            Token token = parameter.getToken();


            if (token instanceof StringToken) {

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        createInstanceFromExisting(this);
        try {
            DocAttribute da = new DocAttribute(target.workspace());
            da.setContainer(target);
            //da.setName("keplerFormattedPTIIDocumentation");
            da.author = new StringAttribute(da, "author");
            da.author.setExpression(author);
            da.version = new StringAttribute(da, "version");
            da.version.setExpression(version);
            da.since = new StringAttribute(da, "since");
            da.since.setExpression("");
            da.description = new StringParameter(da, "description");
            da.description.setExpression(userLevelDocumentation);


            //add ports and params
            Enumeration portItt = portHash.keys();
            while (portItt.hasMoreElements()) {
                String name = (String) portItt.nextElement();
                String desc = (String) portHash.get(name);
                StringAttribute sa = new StringAttribute(da, name + " (port)");
                sa.setExpression(desc);
            }


            Enumeration propItt = propertyHash.keys();
            while (propItt.hasMoreElements()) {
                String name = (String) propItt.nextElement();

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            // Check to see if it has
            // attributes that specify its color or an explanation.
            // Old way to specify a color.
            try {
                StringAttribute colorAttr = (StringAttribute) (object
                        .getAttribute("_color", StringAttribute.class));
                if (colorAttr != null) {
                    String color = colorAttr.getExpression();
                    AnimationRenderer animationRenderer = new AnimationRenderer(
                            SVGUtilities.getColor(color));
                    animationRenderer.renderSelected(result);
                }
            } catch (IllegalActionException e) {
                // Ignore
            }
            // New way to specify a highlight color.
            try {
                ColorAttribute highlightAttribute = (ColorAttribute) (object
                        .getAttribute("_highlightColor", ColorAttribute.class));
                if (highlightAttribute != null
                        && !highlightAttribute.getExpression().trim()
                                .equals("")) {
                    Color color = highlightAttribute.asColor();
                    AnimationRenderer animationRenderer = new AnimationRenderer(
                            color);
                    animationRenderer.renderSelected(result);
                }
            } catch (IllegalActionException e) {
                // Ignore.
            }
            try {
                StringAttribute explanationAttribute = (StringAttribute) (object
                        .getAttribute("_explanation", StringAttribute.class));
                if (explanationAttribute != null) {
                    result.setToolTipText(explanationAttribute.getExpression());
                }
            } catch (IllegalActionException e) {
                // Ignore.
            }

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            throw new KernelRuntimeException("Could not find "
                    + "configuration, list of configurations was "
                    + configsList.size() + " elements, all were null.");
        }
        // Look up the attribute (if it exists)
        StringAttribute multipleDocumentationAllowed = (StringAttribute) config
                .getAttribute("_multipleDocumentationAllowed");
        if (multipleDocumentationAllowed != null) {
            retVal = Boolean.parseBoolean(multipleDocumentationAllowed
                    .getExpression());
        }
        return retVal;
    }

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                for (Iterator it = configsList.iterator(); it.hasNext();) {
                    config = (Configuration) it.next();
                    if (config != null)
                        break;
                }
                StringAttribute alternateGetMomlActionAttribute = (StringAttribute) config
                        .getAttribute("_alternateGetMomlAction");
                if ((alternateGetMomlActionAttribute != null) && (lsidFlag)) {
                    String alternateGetMomlClassName = alternateGetMomlActionAttribute
                            .getExpression();
                    try {
                        Class getMomlClass = Class
                                .forName(alternateGetMomlClassName);
                        object = getMomlClass.newInstance();

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