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)

     *   actor with this name.
     */
    public CalInterpreter(CompositeEntity container, String name)
            throws NameDuplicationException, IllegalActionException {
        super(container, name);
        calCode = new StringAttribute(this, "calCode");
        calCode.setExpression(defaultActorText);
        calCode.setVisibility(Settable.EXPERT);
        _attachActorIcon(name);
    }

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            throws IllegalActionException, NameDuplicationException {
        super(container, name);


        input.setTypeEquals(BaseType.BOOLEAN);


        message = new StringAttribute(this, "message");
        message.setExpression("Model triggered an exception.");
    }

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     */
    public HTMLViewerTableau(Effigy container, String name)
            throws IllegalActionException, NameDuplicationException {
        super(container, name);


        url = new StringAttribute(this, "url");
        // Set the tableau so that we can get the Configuration and Kepler icon.
        HTMLViewer frame = new HTMLViewer(this);
        setFrame(frame);
        frame.setTableau(this);

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        sleepTime = new PortParameter(this, "sleepTime");
        sleepTime.setExpression("0L");
        sleepTime.setTypeEquals(BaseType.LONG);


        Port sleepPort = sleepTime.getPort();
        StringAttribute sleepCardinal = new StringAttribute(sleepPort,
                "_cardinal");
        sleepCardinal.setExpression("SOUTH");


        // Data type polymorphic, multiports.
        input.setMultiport(true);
        output.setMultiport(true);
        output.setTypeAtLeast(input);

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        super(container, name);


        input = new TypedIOPort(this, "input", true, false);
        output = new TypedIOPort(this, "output", false, true);


        variableName = new StringAttribute(this, "variableName");
        variableName.setExpression("parameter");


        delayed = new Parameter(this, "delayed");
        delayed.setTypeEquals(BaseType.BOOLEAN);
        delayed.setExpression("true");

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        if (libraryContainer == null) {
            return;
        }


        StringAttribute alternateLibraryBuilderAttribute = (StringAttribute) libraryContainer
                .getAttribute("_alternateLibraryBuilder");


        // If the _alternateLibraryBuilder attribute is present,
        // then we use the specified class to build the library
        // instead of just reading the moml.


        if (alternateLibraryBuilderAttribute != null) {
            // Get the class that will build the library from the plugins
            String libraryBuilderClassName = alternateLibraryBuilderAttribute
                    .getExpression();


            // Dynamically load the library builder and build the library
            Class libraryBuilderClass = Class.forName(libraryBuilderClassName);
            LibraryBuilder libraryBuilder = (LibraryBuilder) libraryBuilderClass
                    .newInstance();


            // Set the attributes defined in the moml to the attributes of the
            // LibraryBuilder
            libraryBuilder.addAttributes(alternateLibraryBuilderAttribute
                    .attributeList());


            try {
                library = libraryBuilder.buildLibrary(libraryContainer
                        .workspace());

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                }
                connector.setToolTipText(tipText);


                try {
                    // FIXME: This isn't quite right for relation groups.
                    StringAttribute colorAttribute = (StringAttribute) (relation
                            .getAttribute("_color", StringAttribute.class));


                    if (colorAttribute != null) {
                        String color = colorAttribute.getExpression();
                        if (color != null && !color.trim().equals("")) {
                            connector.setStrokePaint(SVGUtilities
                                    .getColor(color));
                        }
                    }
                } catch (IllegalActionException e) {
                    // Ignore;
                }
                try {
                    // FIXME: This isn't quite right for relation groups.
                    ColorAttribute colorAttribute = (ColorAttribute) (relation
                            .getAttribute("color", ColorAttribute.class));


                    if (colorAttribute != null) {
                        Color color = colorAttribute.asColor();
                        connector.setStrokePaint(color);
                    }
                } catch (IllegalActionException e) {
                    // Ignore;
                }


                StringAttribute _explAttr = (StringAttribute) (relation
                        .getAttribute("_explanation"));


                if (_explAttr != null) {
                    connector.setToolTipText(_explAttr.getExpression());
                }


                // NOTE: The preferences mechanism may set this.
                Token radiusValue = PtolemyPreferences.preferenceValue(
                        relation, "_linkBendRadius");

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     */
    public TextEditorTableauFactory(NamedObj container, String name)
            throws IllegalActionException, NameDuplicationException {
        super(container, name);


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


        columnsDisplayed = new Parameter(this, "columnsDisplayed");
        columnsDisplayed.setTypeEquals(BaseType.INT);
        columnsDisplayed.setExpression("80");

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            String applicationName = "";


            // We handle the applicationName specially so that we open
            // only the docs for the app we are running.
            try {
                StringAttribute applicationNameAttribute = (StringAttribute) configuration
                        .getAttribute("_applicationName", StringAttribute.class);


                if (applicationNameAttribute != null) {
                    applicationName = applicationNameAttribute.getExpression();
                }
            } catch (Throwable throwable) {
                // Ignore and use the default applicationName: "",
                // which means we look in doc.codeDoc.
            }

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     */
    public TextEditorConfigureFactory(NamedObj container, String name)
            throws IllegalActionException, NameDuplicationException {
        super(container, name);


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


        columnsDisplayed = new Parameter(this, "columnsDisplayed");
        columnsDisplayed.setTypeEquals(BaseType.INT);
        columnsDisplayed.setExpression("80");

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