Tree can be viewed as an example of how to construct a recursive structure using Blocks/ RenderCommands, understanding the render queue may require a little reading/experimentation, but the advantage of this approach is that it allows you to use the normal tapestry components for creating your markup (opposed to simply building and returning a HTML string, which would most likely end in a maintenance nightmare pretty fast)
-- Chris On Mon, Mar 21, 2016 at 5:02 AM, Qbyte Consulting <qbyteconsult...@gmail.com > wrote: > ok ignore that, bumped into some tapestry4 source > > would this be the approach? > > JSONObject > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-json/5.3.1/org/apache/tapestry5/json/JSONObject.java#JSONObject > > > spec = new JSONObject > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-json/5.3.1/org/apache/tapestry5/json/JSONObject.java#JSONObject > >("clientId", > clientId); > > 171 < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java#171 > > > > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java# > > > > 172 < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java#172 > > > > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java# > > > > e.attribute > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/dom/Element.java#Element.attribute%28java.lang.String%2Cjava.lang.String%29 > >("id", > clientId); > > 173 < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java#173 > > > > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java# > > > > 174 < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java#174 > > > > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java# > > > > spec.put > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-json/5.3.1/org/apache/tapestry5/json/JSONObject.java#JSONObject.put%28java.lang.String%2Cjava.lang.Object%29 > >("leaf", > node.isLeaf < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/tree/TreeNode.java#TreeNode.isLeaf%28%29 > >()); > > 175 < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java#175 > > > > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java# > > > > 176 < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java#176 > > > > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java# > > > > if (hasChildren) > > 177 < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java#177 > > > > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java# > > > > { > > 178 < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java#178 > > > > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java# > > > > Link > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/Link.java#Link > > > expandChildren = resources > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java#Tree.0resources > >.createEventLink > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/ComponentResourcesCommon.java#ComponentResourcesCommon.createEventLink%28java.lang.String%2Cjava.lang.Object%5B%5D%29 > >("expandChildren", > node.getId < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/tree/TreeNode.java#TreeNode.getId%28%29 > >()); > > 179 < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java#179 > > > > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java# > > > > Link > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/Link.java#Link > > > markExpanded = resources > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java#Tree.0resources > >.createEventLink > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/ComponentResourcesCommon.java#ComponentResourcesCommon.createEventLink%28java.lang.String%2Cjava.lang.Object%5B%5D%29 > >("markExpanded", > node.getId < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/tree/TreeNode.java#TreeNode.getId%28%29 > >()); > > 180 < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java#180 > > > > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java# > > > > Link > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/Link.java#Link > > > markCollapsed = resources > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java#Tree.0resources > >.createEventLink > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/ComponentResourcesCommon.java#ComponentResourcesCommon.createEventLink%28java.lang.String%2Cjava.lang.Object%5B%5D%29 > >("markCollapsed", > node.getId < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/tree/TreeNode.java#TreeNode.getId%28%29 > >()); > > 181 < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java#181 > > > > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java# > > > > 182 < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java#182 > > > > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java# > > > > spec.put > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-json/5.3.1/org/apache/tapestry5/json/JSONObject.java#JSONObject.put%28java.lang.String%2Cjava.lang.Object%29 > >("expandChildrenURL", > expandChildren.toString > < > http://grepcode.com/file/repository.grepcode.com/java/root/jdk/openjdk/6-b27/java/lang/Object.java#Object.toString%28%29 > >()) > > 183 < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java#183 > > > > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java# > > > > .put > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-json/5.3.1/org/apache/tapestry5/json/JSONObject.java#JSONObject.put%28java.lang.String%2Cjava.lang.Object%29 > >("markExpandedURL", > markExpanded.toString > < > http://grepcode.com/file/repository.grepcode.com/java/root/jdk/openjdk/6-b27/java/lang/Object.java#Object.toString%28%29 > >()) > > 184 < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java#184 > > > > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-core/5.3.1/org/apache/tapestry5/corelib/components/Tree.java# > > > > .put > < > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.tapestry/tapestry-json/5.3.1/org/apache/tapestry5/json/JSONObject.java#JSONObject.put%28java.lang.String%2Cjava.lang.Object%29 > >("markCollapsedURL", > markCollapsed.toString > < > http://grepcode.com/file/repository.grepcode.com/java/root/jdk/openjdk/6-b27/java/lang/Object.java#Object.toString%28%29 > >()); > > > On Mon, Mar 21, 2016 at 10:47 AM, Qbyte Consulting < > qbyteconsult...@gmail.com> wrote: > > > Tree uses BaseComponent that doesn't seem to be in tapestry5? > > > > On Fri, Mar 18, 2016 at 2:15 PM, Chris Poulsen <mailingl...@nesluop.dk> > > wrote: > > > >> Hi, > >> > >> Take a look at the Tapestry Tree component to see how recursive > rendering > >> can be done. > >> > >> -- > >> Chris > >> > >> On Fri, Mar 18, 2016 at 6:17 AM, Qbyte Consulting < > >> qbyteconsult...@gmail.com > >> > wrote: > >> > >> > I am creating a Menu component (for a ul tag) that needs to > >> > programmatically generate the child links. > >> > > >> > I already have a MenuItem component, but this is parameter bound to a > >> > template, whereas now I need to programmatically drive the parameters. > >> > > >> > I either need to be able to create the existing MenuItem objects > >> somehow in > >> > the Menu component and render them, or I simply write the links out in > >> the > >> > menu - however since my Menu component isn't extending AbstractLink > >> (like > >> > MenuItem) I can't use writeLink(). > >> > > >> > Any ideas what is the simplest approach to resolve this? Code below. > >> > > >> > John > >> > > >> > > >> > public class Menu { > >> > > >> > /** The text. */ > >> > @Parameter(required = true, allowNull = false, defaultPrefix = > >> > BindingConstants.LITERAL) > >> > private String name; > >> > > >> > /** The resources. */ > >> > @Inject > >> > private ComponentResources resources; > >> > > >> > /** The component source. */ > >> > @Inject > >> > private ComponentSource componentSource; > >> > > >> > @Inject > >> > private PageRenderLinkSource linkSource; > >> > > >> > /** The messages. */ > >> > @Inject > >> > private Messages messages; > >> > > >> > @Inject > >> > private MenuService menuService; > >> > > >> > /** The state bean. */ > >> > @SessionState(create = false) > >> > private SessionStateBean stateBean; > >> > > >> > /** > >> > * If provided, this is the activation context for the target page > >> (the > >> > * information will be encoded into the URL). If not provided, > then > >> the > >> > * target page will provide its own activation context. > >> > */ > >> > @Parameter > >> > private Object[] context; > >> > > >> > /** > >> > * Begin render. > >> > * > >> > * @param writer the writer > >> > */ > >> > void beginRender(MarkupWriter writer) { > >> > writer.element("ul"); > >> > for (String pageName : > >> > menuService.getPageNames(MenuService.Menu.valueOf(name))) { > >> > renderMenuItem(pageName, writer); > >> > } > >> > } > >> > > >> > private void renderMenuItem(String page, MarkupWriter writer) { > >> > Link link = resources.createPageLink(page, > >> > resources.isBound("context"), context); > >> > writer.element("li"); > >> > NO!! writeLink(writer, link); > >> > writer.writeRaw(messages.get(page.toLowerCase().concat(".link"))); > >> > writer.end(); > >> > writer.end(); > >> > } > >> > > >> > /** > >> > * After render. > >> > * > >> > * @param writer the writer > >> > */ > >> > void afterRender(MarkupWriter writer) { > >> > writer.end(); > >> > } > >> > } > >> > > >> > > >> > public class MenuItem extends AbstractLink { > >> > > >> > /** > >> > * The logical name of the page to link to. > >> > */ > >> > @Parameter(required = true, allowNull = false, defaultPrefix = > >> > BindingConstants.LITERAL) > >> > private String page; > >> > > >> > /** The text. */ > >> > @Parameter(required = true, allowNull = false, defaultPrefix = > >> > BindingConstants.LITERAL) > >> > private String text; > >> > > >> > /** The resources. */ > >> > @Inject > >> > private ComponentResources resources; > >> > > >> > /** The component source. */ > >> > @Inject > >> > private ComponentSource componentSource; > >> > > >> > /** The state bean. */ > >> > @SessionState(create = false) > >> > private SessionStateBean stateBean; > >> > > >> > /** > >> > * If provided, this is the activation context for the target page > >> (the > >> > * information will be encoded into the URL). If not provided, > then > >> the > >> > * target page will provide its own activation context. > >> > */ > >> > @Parameter > >> > private Object[] context; > >> > > >> > /** > >> > * Begin render. > >> > * > >> > * @param writer the writer > >> > */ > >> > void beginRender(MarkupWriter writer) { > >> > if (isDisabled()) > >> > return; > >> > Link link = resources.createPageLink(page, > >> > resources.isBound("context"), context); > >> > writer.element("li"); > >> > writeLink(writer, link); > >> > writer.writeRaw(text); > >> > } > >> > > >> > /** > >> > * After render. > >> > * > >> > * @param writer the writer > >> > */ > >> > void afterRender(MarkupWriter writer) { > >> > if (isDisabled()) > >> > return; > >> > writer.end(); > >> > writer.end(); > >> > } > >> > } > >> > > >> > > > > >
