Example usage for org.apache.wicket Component visitParents

Introduction

In this page you can find the example usage for org.apache.wicket Component visitParents.

Prototype

public final <R, C extends MarkupContainer> R visitParents(final Class<C> parentClass,
        final IVisitor<C, R> visitor) 

Source Link

Document

Traverses all parent components of the given class in this parentClass, calling the visitor's visit method at each one.

Usage

From source file:com.doculibre.constellio.wicket.utils.WicketResourceUtils.java

License:Open Source License

public static Component findOutputMarkupIdParent(Component child) {
    Component matchingParent;//from  w ww.  j  av  a 2 s  .  com
    Component firstParent = child.getParent();
    if (firstParent != null) {
        if (firstParent.getOutputMarkupId()) {
            matchingParent = firstParent;
        } else {
            // Starts with current object despite what method name lets you think...
            matchingParent = (Component) firstParent.visitParents(Component.class, new IVisitor() {
                @Override
                public Object component(Component component) {
                    if (component.getOutputMarkupId()) {
                        return component;
                    } else {
                        return CONTINUE_TRAVERSAL;
                    }
                }
            });
        }
    } else {
        matchingParent = null;
    }
    return matchingParent;
}

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From source file:org.apache.isis.viewer.wicket.ui.panels.FormExecutorDefault.java

License:Apache License

private void addComponentsToRedraw(final AjaxRequestTarget target) {
    final List<Component> componentsToRedraw = Lists.newArrayList();
    final List<Component> componentsNotToRedraw = Lists.newArrayList();

    final Page page = target.getPage();
    page.visitChildren(new IVisitor<Component, Object>() {
        @Override//from w w  w  .  j  ava  2s  .c o m
        public void component(final Component component, final IVisit<Object> visit) {
            if (component.getOutputMarkupId() && !(component instanceof Page)) {
                List<Component> listToAddTo = shouldRedraw(component) ? componentsToRedraw
                        : componentsNotToRedraw;
                listToAddTo.add(component);
            }
        }

        private boolean shouldRedraw(final Component component) {

            // hmm... this doesn't work, because I think that the components
            // get removed after they've been added to target.
            // so.. still getting WARN log messages from XmlPartialPageUpdate

            //                final Page page = component.findParent(Page.class);
            //                if(page == null) {
            //                    // as per logic in XmlPartialPageUpdate, this has already been
            //                    // removed from page so don't attempt to redraw it
            //                    return false;
            //                }

            final Object defaultModel = component.getDefaultModel();
            if (!(defaultModel instanceof ScalarModel)) {
                return true;
            }
            final ScalarModel scalarModel = (ScalarModel) defaultModel;
            final UnchangingFacet unchangingFacet = scalarModel.getFacet(UnchangingFacet.class);
            return unchangingFacet == null || !unchangingFacet.value();
        }
    });

    for (Component componentNotToRedraw : componentsNotToRedraw) {
        MarkupContainer parent = componentNotToRedraw.getParent();
        while (parent != null) {
            parent = parent.getParent();
        }

        componentNotToRedraw.visitParents(MarkupContainer.class, new IVisitor<MarkupContainer, Object>() {
            @Override
            public void component(final MarkupContainer parent, final IVisit<Object> visit) {
                componentsToRedraw.remove(parent); // no-op if not in that list
            }
        });
        if (componentNotToRedraw instanceof MarkupContainer) {
            final MarkupContainer containerNotToRedraw = (MarkupContainer) componentNotToRedraw;
            containerNotToRedraw.visitChildren(new IVisitor<Component, Object>() {
                @Override
                public void component(final Component parent, final IVisit<Object> visit) {
                    componentsToRedraw.remove(parent); // no-op if not in that list
                }
            });
        }
    }

    if (LOG.isDebugEnabled()) {
        debug(componentsToRedraw, componentsNotToRedraw);
    }

    for (Component component : componentsToRedraw) {
        target.add(component);
    }
}

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From source file:org.dcm4chee.web.common.secure.ExtendedSwarmStrategy.java

License:LGPL

private MarkupContainer findLowestSecureContainer(Component component) {

    final MarkupContainer[] lowestSecureParent = new MarkupContainer[1];

    component.visitParents(MarkupContainer.class, new IVisitor<Component>() {
        public Object component(Component component) {
            if (component instanceof ISecureComponent) {
                lowestSecureParent[0] = (MarkupContainer) component;
                return IVisitor.STOP_TRAVERSAL;
            }//from w  w w .jav a 2s .  c  o m
            return null;
        }
    });

    if (null == lowestSecureParent[0]) {
        try {
            lowestSecureParent[0] = component.getPage();
        } catch (IllegalStateException e) {
            throw new SecurityException(
                    this.getClass() + ": Unable to create alias for component: " + component, e);
        }
    }

    MarkupContainer markupContainer = lowestSecureParent[0];
    return markupContainer;
}

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From source file:org.dcm4chee.wizard.common.login.secure.ExtendedSwarmStrategy.java

License:LGPL

private MarkupContainer findLowestSecureContainer(Component component) {

    final MarkupContainer[] lowestSecureParent = new MarkupContainer[1];

    component.visitParents(MarkupContainer.class, new IVisitor<MarkupContainer, Void>() {
        public void component(MarkupContainer component, IVisit<Void> visit) {
            if (component instanceof ISecureComponent) {
                lowestSecureParent[0] = component;
                visit.stop();//  www  .  ja v  a  2 s.  co  m
            }
        }
    });

    if (null == lowestSecureParent[0]) {
        try {
            lowestSecureParent[0] = component.getPage();
        } catch (IllegalStateException e) {
            throw new SecurityException(
                    this.getClass() + ": Unable to create alias for component: " + component, e);
        }
    }

    MarkupContainer markupContainer = lowestSecureParent[0];
    return markupContainer;
}

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