Examples of org.apache.cocoon.forms.util.WidgetFinder

org.apache.cocoon.forms.util.WidgetFinder
An utility class to manage list of widgets.
The {@link org.apache.cocoon.forms.formmodel.Widget#lookupWidget(String)} method is ableto only return one widget, while this class returns a list of widgets. It uses a path syntax containing a /./, repeater/./foo, which repreesents all the instances of the foo widget inside the repeater, one per row. Note that it also supports finding a widgets inside multi level repeaters, something like invoices/./movements/./amount or courseYears/./exams/./preparatoryCourses/./title .

Class has been designed to offer good performances, since the widget list is built only once and is automatically updated when a repeater row is added or removed. {@link org.apache.cocoon.forms.event.RepeaterListener}s can be attached directly to receive notifications of widget additions or removals.

This class is used in {@link org.apache.cocoon.forms.formmodel.CalculatedField}s and {@link org.apache.cocoon.forms.formmodel.CalculatedFieldAlgorithm}s.
@version $Id$

     * <p>If the variable name contains the "/./" notation, it will return a Collection of values,
     * using the {@link org.apache.cocoon.forms.util.WidgetFinder} utility.
     */
    public Object resolveVariable(String name) {
        if (name.indexOf("/./") != -1) {
            WidgetFinder finder = new WidgetFinder(widget, name, false);
            Collection widgets = finder.getWidgets();
            List result = new ArrayList();
            for (Iterator iter = widgets.iterator(); iter.hasNext();) {
                Widget widget = (Widget) iter.next();
                if (widget.getValue() != null) {
                    result.add(widget.getValue());

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    }
    
    public void initialize() {
        super.initialize();
        Iterator triggers = this.algorithm.getTriggerWidgets();
        this.finder = new WidgetFinder(this.getParent(), triggers, true);
        this.finder.addRepeaterListener(new InstallHandlersListener());
        installHandlers();
        
//        this.initialized = true;
    }

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        try {
            Object result = null;
            if (initialResult != null) {
                result = initialResult.evaluate(new ExpressionContextImpl(parent, true));
            }
            WidgetFinder finder = new WidgetFinder(parent, this.repeatOn, false);
            Collection widgets = finder.getWidgets();            
            for (Iterator iter = widgets.iterator(); iter.hasNext();) {
                Widget widget = (Widget) iter.next();
                ResultExpressionContext ctx = new ResultExpressionContext(widget, result);
                result = formula.evaluate(ctx);
            }

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     * <p>If the variable name contains the "/./" notation, it will return a Collection of values,
     * using the {@link org.apache.cocoon.forms.util.WidgetFinder} utility.
     */
    public Object resolveVariable(String name) {
        if (name.indexOf("/./") != -1) {
            WidgetFinder finder = new WidgetFinder(widget, name, false);
            Collection widgets = finder.getWidgets();
            List result = new ArrayList();
            for (Iterator iter = widgets.iterator(); iter.hasNext();) {
                Widget widget = (Widget) iter.next();
                if (widget.getValue() != null) {
                    result.add(widget.getValue());

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        try {
            Object result = null;
            if (initialResult != null) {
                result = initialResult.evaluate(new ExpressionContextImpl(parent, true));
            }
            WidgetFinder finder = new WidgetFinder(parent, this.repeatOn, false);
            Collection widgets = finder.getWidgets();            
            for (Iterator iter = widgets.iterator(); iter.hasNext();) {
                Widget widget = (Widget) iter.next();
                ResultExpressionContext ctx = new ResultExpressionContext(widget, result);
                result = formula.evaluate(ctx);
            }

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    }
    
    public void initialize() {
        super.initialize();
        Iterator triggers = this.algorithm.getTriggerWidgets();
        this.finder = new WidgetFinder(this.getParent(), triggers, true);
        this.finder.addRepeaterListener(new InstallHandlersListener());
        installHandlers();
        
//        this.initialized = true;
    }

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Related Classes of org.apache.cocoon.forms.util.WidgetFinder

org.apache.cocoon.forms.formmodel.algorithms.RepeatedFormula

org.apache.cocoon.forms.formmodel.CalculatedField

org.apache.cocoon.forms.formmodel.ExpressionContextImpl

org.apache.cocoon.forms.formmodel.Repeater

org.apache.cocoon.forms.formmodel.Widget

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