Vaadin Tree

It allowed us to understand how C manages memory internally while running a program trough the extensive use of pointers and it also allowed us to understand how self-referenced data structures work. Kroubalkian Software developer. Vaadin is a big collection of UI components. PCGS PR69 DCAM. I want to select nodes using checkboxes. Role of JPAContainer in binding Vaadin components to a database Vaadin JPAContainer allows connecting Vaadin user interface components directly to the persistent model objects. un blog con articulos sobre vaadin completamente en español. I am doing a project in Vaadin 7. When I run it I get a NullPointException on line 15 but I haven't been able to figure out why. Starting the Java Code. github-elements - GitHub's Web Component collection. Questions & answers Roadmap Quick recap of Vaadin 7 7. A Vaadin application typically extends the UI class. Building Mobile Applications with Vaadin TouchKit Sami Ekblad, Vaadin @samiekblad 2. When I expand the second layer tree at first time, it's fine. Interface that is implemented by containers which allow reducing their visible contents based on a set of filters. Where I'm making mistake ? It should print values in ascending order using inOrderTraverseTree method. This first post is an implementation of spring security upon Vaadin 7. Where I'm making mistake ? It should print values in ascending order using inOrderTraverseTree method. Name Email Dev Id Roles Organization; Seth Leger: sethopennms. Skip to content. I will show a Vaadin application that lets edit a person-form, featuring "Undo" and "Redo" buttons. Vaadin Button. Till now you have learnt about different components of Vaadin. this refers to current instance method right? but can anyone explain a bit better. Building mobile applications with Vaadin TouchKit 1. You will also be able to list out the merits and demerits of working with Vaadin, once you are done with this c. Filtering in vaadin combobox. Vaadin Flow features a server-side architecture which means that most of the logic runs on the server. Also, they created a Java web development framework of the same name. Interface that is implemented by containers which allow reducing their visible contents based on a set of filters. Starting the Java Code. I'm trying to traverse a binary tree by level, then sum the ints held in each node per level which is held in levelSum. When a set of filters are set, only items that match all the filters are included in the visible contents of the conta. QA new Label(“Hello Touch”) 5. Learning Vaadin is a practical step-by-step tutorial to understanding, using, and mastering the art of RIA development with Vaadin. #opensource. EDIT: Cuba DataGrid has header & footer row, my bad Hi Do Cuba team plan to integrate Vaadin TreeGrid at some point ? It is currently available in Vaadin 7 through an official addon and will be integrated in Vaadin 8. Other persistence add-ons are available in the Vaadin directory, such as a container for Hibernate, one of the leading persistence frameworks available in the Java ecosystem. Size of Java Script file. When I run it I get a NullPointException on line 15 but I haven't been able to figure out why. 1952-P D S 25C Washington Head Quarters, 3 Coins 90% Silver,2013 ATB Great Basin National Park P & D Quarter Rolls - US Mint - KW024,1991-S 25c PCGS PR70DCAM WASHINGTON QUARTER PROOF DEEP CAMEO PR 70 DC. vaadin-grid is a free, high quality data grid / data table Web Component. com Protect your website from spam and abuse while letting real people pass through with ease. 13 Application Skeleton. In case, you want control the enable/disable this feature, use combobox. Learning Vaadin 7, Second Edition [Nicolas Frankel] on Amazon. Nicolas Fränkel. Other persistence add-ons are available in the Vaadin directory, such as a container for Hibernate, one of the leading persistence frameworks available in the Java ecosystem. - vaadin/vaadin-grid. 1897-O Vintage Silver Barber Quarter, *Nice Better Date Coin for any collection*,US 1999 Pennsylvania State Quarter Coin Genuine Leather Studded Bracelet NOS,1938-S & 1945-S War Time Silver Nickel, CH BU!. Select all the Vaadin plugins in the tree. 1, What We Aim At earlier. The management is open as well, and most decisions are discussed publicly. We have collection of more than 1 Million open source products ranging from Enterprise product to small libraries in all platforms. ClickEvent is fired. Beoynd Vaadin 7 1. When I run it I get a NullPointException on line 15 but I haven't been able to figure out why. spm - Brand new static package manager. I am in the process of creating a binary tree for a project I've been working on where I insert people into a binary tree by name (the tree iterates through each character to determine which is bigger when inserting). So there is no need to define additional services for receiving dialog and tree descriptors. Introduction to Vaadin - Your first application with Framework 8 - Duration: 12:34. Rule of product: If an action can be performed by making A choices followed by B choices, then it can be performed ways. The following code is pretty simple and straightforward. The first part of the chapter discusses the basic web components and their. This is all possible because of the Vaadin server part. I'm trying to traverse a binary tree by level, then sum the ints held in each node per level which is held in levelSum. *FREE* shipping on qualifying offers. File, tree Icon in Vaadin icons Find the perfect icon for Your Project and download them in SVG, PNG, ICO or ICNS, its Free!. Wow, been staying up late cranking out some Vaadin blogs. Developed web application based on Vaadin, Hibernate & Oracle DB for showcasing bank’s applications & teams details. First Things First: Setting Field Ordering. By the end of it you'll have acquired the knack and taken a fun journey on the way. I use the 'setItems' method to set values to the tree grid as per the vaadin documentation. Column widths are actually updated for all the table, when expanding/collapsing nodes!. Vaadin is used to build rich user interface components in a webpage. Contents are added to the UI class in a tree structure. Book of Vaadin Vaadin 7 Edition -6th Revision. parent = this; I know it says make parent of left child to be ' this ' but what exactly is this. You have to enable javascript in your browser to use an application built with Vaadin. 0 of this plugin introduces support for the new "checkbox" ReCaptcha. 2 combine the best of • Server-side RIA • Google Web Toolkit 17. When a set of filters are set, only items that match all the filters are included in the visible contents of the conta. I am in the process of creating a binary tree for a project I've been working on where I insert people into a binary tree by name (the tree iterates through each character to determine which is bigger when inserting). Data Model 5. Role of JPAContainer in binding Vaadin components to a database Vaadin JPAContainer allows connecting Vaadin user interface components directly to the persistent model objects. It helps developers to improve extensibility and flexibility factors of their projects. Tags Icon made by Vectors Market from www. The book begins with simple examples using the most common Vaadin UI components and quickly move towards more complex applications as components are introduced chapter-by-chapter. Introduction. Vaadin core components are user friendly, easily understandable and compatible with any modern browsers. Toggle navigation. You can use the container to display data in a table, tree, any other selection component, or edit the data in a form. In this chapter, you will learn about different user interface components that have been introduced by Vaadin in order to maintain a good quality web page. *FREE* shipping on qualifying offers. No comments: Post a Comment. Web Components, like almost any technology in the frontend ecosystem, have supporters and opponents. 0 of this plugin introduces support for the new "checkbox" ReCaptcha. The layout is managed by layout components, or more generally components that. Magnolia API. The Tree component allows a natural way to represent data that has hierarchical relationships. How can I format the vaadin-radio-buttons within a vaadin-radio-group, say three buttons in a row, and others in another row? It seems that I can't use some other elements, like div or vaadin-horizontal-layout, to format them. Real White Gold On Silver Initial Letter Alphabet P Pendant XL Diamonds Charm,Inlayed Australian Opal and Solid 14k Gold Whale Tail Pendant,VINTAGE FRENCH CRYSTAL PITCHER / JUG. See the Book of Vaadin Whether the component is actually visible or not. 13 Application Skeleton. Choosing vaadin is the best thing you guys have done for magnolia and at the same time Vaadin community as well. The elements utilize listeners, occasions and information binding to interact with each other and with your company reasoning. Long live these great open source technologies !!!! Thank you Raghu. Vaadin is a robust architecture for rapid application development. These examples are extracted from open source projects. It helps developers to improve extensibility and flexibility factors of their projects. A Tree component for Vaadin Flow based on TreeGrid - amahdy/vaadin-tree. It seems like it is overwriting the previous item. I am in the process of creating a binary tree for a project I've been working on where I insert people into a binary tree by name (the tree iterates through each character to determine which is bigger when inserting). Testing Performance of Vaadin Apps: Step by Step Tutorial Use the View Results Tree listener to check the samples. As in the previous years, we use a Vaadin UI for the Xmas tree controller. To enable a context menu, we have to implement a Vaadin Action. Vaadin is a robust architecture for quick application advancement. You can thereby get or set the currently selected item by the value property of the tree, that is, with getValue() and setValue(). In this chapter, you will learn about different user interface components that have been introduced by Vaadin in order to maintain a good quality web page. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Klymit Inertia X Frame Ultralight Backpacking Pad,Craghoppers Womens/Ladies Pro Stretch Waterproof Walking Trousers Regular Leg,ROSSIGNOL SCI PURSUIT 700 TI+ATTACCO SPX 12 KONECT - NERO/BIANCO - RRH05BZ. Vaadin is a big collection of UI components. Kroubalkian Software developer. Vaadin is a Finnish company which creates UI development tools and libraries. The latest Tweets from Learning Vaadin (@learnvaadin). I need a tree like this, + Person A Name Age + Person B Name Age But, Vaadin Tree component is not adding the Duplicate item in the tree. 1 2001 Open Source 5. com is licensed by CC 3. We have collection of more than 1 Million open source products ranging from Enterprise product to small libraries in all platforms. Vaadin Framework is a UI framework with a server-side programming model, in which all the UI logic and its state live on a server, and a web browser executes only the code of UI widgets. When the user selects an item, the tree will receive an ValueChangeEvent, which you can catch with a ValueChangeListener. Klymit Inertia X Frame Ultralight Backpacking Pad,Craghoppers Womens/Ladies Pro Stretch Waterproof Walking Trousers Regular Leg,ROSSIGNOL SCI PURSUIT 700 TI+ATTACCO SPX 12 KONECT - NERO/BIANCO - RRH05BZ. New data entry components, new layouts, a new preset for the Lumo theme, dynamic registration of routes, keyboard shortcuts Java API, and many improvements and bug fixes-that is Vaadin 13. Finally, Vaadin conforms to standards such as HTML and CSS, making the technology future proof. In my experience, it's mainly used for in-house projects and admin UIs. vaadin-grid is a free, high quality data grid / data table Web Component. Vaadin - Tree - Custom components and validation adding custom components in columns hide the click event have to extend the client side code of the table (see consulting session 5). Vaadin Framework is a UI framework with a server-side programming model, in which all the UI logic and its state live on a server, and a web browser executes only the code of UI widgets. File, tree Icon in Vaadin icons Find the perfect icon for Your Project and download them in SVG, PNG, ICO or ICNS, its Free!. Coproject - rich project management #opensource. When a set of filters are set, only items that match all the filters are included in the visible contents of the conta. So that was it: Vaadin Reasoning In the next blog post - following today - I will explain why Vaadin was the prize winner and how it solves some of the bigger problems we faced with the plain GWT approach. Vaadin is a Finnish company which creates UI development tools and libraries. You can even extend existing components or create your own components. I'm working on a binary search tree and try to write a method for creating minimum BST from an array values. We have collection of more than 1 Million open source products ranging from Enterprise product to small libraries in all platforms. The menu items are handled as actions by an action handler. When I run it I get a NullPointException on line 15 but I haven't been able to figure out why. 1968 SOUVENIR COVER. I am doing a project in Vaadin 7. Vaadin is a web application framework for Rich Internet Applications (RIA). The Tree component allows a natural way to represent data that has hierarchical relationships. When tree node is dragged client puts that key to Transferable s client side counterpart. Our component tree in the final application will look as shown in Figure 1. I need a tree like this, + Person A Name Age + Person B Name Age But, Vaadin Tree component is not adding the Duplicate item in the tree. Also, many Vaadin 7 features are showcased as mini-tutorials, which are available in the Vaadin Wiki at This book is intended for software developers who use, or are considering to use, Vaadin to develop web applications. Vaadin - Quick Guide - This chapter will provide an overview of Vaadin. You will also be able to list out the merits and demerits of working with Vaadin, once you are done with this c. Skip to content. As one of the best web frameworks based on Java, Vaadin is well worth getting familiar with. Easy Way to Remove Tree Stumps - Part 1 - Duration: 4:06. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Rule of product: If an action can be performed by making A choices followed by B choices, then it can be performed ways. The largest part of my work is in back-end but also contributing in front-end (Vaadin, Vue. jQuery is a JavaScript library designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax. I then want to multiply the levelSum by the number of the level that I am at and add this to the totalSum. Starting the Java Code. These examples are extracted from open source projects. RELEASE, jersey. Vaadin is a Rich Internet Application technology built on top of the Google Web Toolkit. Part of the Vaadin components. Skip to end of metadata. The user can drill down in the hierarchy by expanding items by clicking on the expand arrow, and likewise collapse items. In case, you want control the enable/disable this feature, use combobox. Here's a quick overview of some of the most notable updates. The code only runs with servlet spec 3. The question everybody always asks when they learn about Activiti, is as old as software development itself: "How does it perform?". Interface that is implemented by containers which allow reducing their visible contents based on a set of filters. Technologies: Java, C++, Vaadin, Spring, Apache Tomcat, Apache Maven, Ehcache, Drools, MySQL, Scala, Gatling, JUnit Development of the Web FE framework in the MillenniumIT Post Trade Product Phase 2 Implementation - Millennium CSD. spm - Brand new static package manager. This project was based on more advanced data structures like HashTables and Binary Search Trees. Vaadin provides a cool interface to use a theme with in a second with the help of its own Java based SAAS compiler. ClickEvent is fired. Vaadin is a mature, open-source, and powerful Java framework used to build. Part of the Vaadin components. how to make previous and next Button Display Data in php. el libro de vaadin, pre realease de la versión 8 del framework. jQuery is a JavaScript library designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax. I keep some additional methods and can delete if may feel irrelevant. PROCESSOR_REVISION=4e03, spring-kafka. Figure 4: Setting up Web Deployment Assembly. Is it possible to have a tree like above in Vaadin?. Till now you have learnt about different components of Vaadin. Where I'm making mistake ? It should print values in ascending order using inOrderTraverseTree method. When tree node is dragged client puts that key to Transferable s client side counterpart. Vaadin is a robust architecture for rapid application development. When I run it I get a NullPointException on line 15 but I haven't been able to figure out why. setFilteringMode() method. Skip to content. PROCESSOR_IDENTIFIER=Intel64 Family 6 Model 78 Stepping 3, GenuineIntel. The code should speek for itself. A Vaadin application typically extends the UI class. Learning Vaadin 7, Second Edition [Nicolas Frankel] on Amazon. Developed web application based on Vaadin, Hibernate & Oracle DB for showcasing bank's applications & teams details. org: soleger: OGP Member, Software Architect: The OpenNMS Group: Matt Brozowski: brozowopennms. this refers to current instance method right? but can anyone explain a bit better. There I need a tree with selectable nodes. In this project, I am contributing with Metawidget team to extend this framework in order to support Vaadin (One of the Front-Ends technologies that is based on GWT) Metawidget is an OIM (Object Interface Mapper) framework. If taking the image of the tree, it basically uproots a part of the tree to replant it somewhere el. PROCESSOR_IDENTIFIER=Intel64 Family 6 Model 78 Stepping 3, GenuineIntel. Till now you have learnt about different components of Vaadin. // That's how the DOM tree will look. Interface that is implemented by containers which allow reducing their visible contents based on a set of filters. There I need a tree with selectable nodes. [book-of-vaadin-page14-1. It helps developers to improve extensibility and flexibility factors of their projects. Kroubalkian Software developer. Marsh Rat 16,741,745 views. Secondly, congratulations on successful development of proof of concept. javapda blog John G. v4 2006 Ajax v5 2007 6. Use it to embed SVG directly in page or to paste it in UI editor application, such as Sketch, Adobe XD, Affinity Designer or Figma. I am new to Vaadin and I want to know how can I expand tree node on click? More precisely I want the tree to expand when I click on parent node not expand button. The menu items are handled as actions by an action handler. *FREE* shipping on qualifying offers. com is licensed by CC 3. It is built on top of GWT and is used to build attractive web applications without all of the tedious JavaScript and AJAX calls. This first post is an implementation of spring security upon Vaadin 7. By Default, vaadin combobox components support filtering i. Select all the Vaadin plugins in the tree. Refer to the Vaadin libraries overview for more information on these intricacies. el libro de vaadin, pre realease de la versión 8 del framework. 0 of this plugin introduces support for the new "checkbox" ReCaptcha. Other persistence add-ons are available in the Vaadin directory, such as a container for Hibernate, one of the leading persistence frameworks available in the Java ecosystem. vaadin-grid is a free, high quality data grid / data table Web Component. toukokuuta 12. Vaadin provides a cool interface to use a theme with in a second with the help of its own Java based SAAS compiler. The largest part of my work is in back-end but also contributing in front-end (Vaadin, Vue. The Vaadin site should now appear in the Software Updates window. First Things First: Setting Field Ordering. The management is open as well, and most decisions are discussed publicly. Vaadin is a popular Java framework for building single page web applications. You can thereby get or set the currently selected item by the value property of the tree, that is, with getValue() and setValue(). Vaadin is a big collection of UI components. I keep some additional methods and can delete if may feel irrelevant. github-elements - GitHub's Web Component collection. // That’s how the DOM tree will look. Wow, been staying up late cranking out some Vaadin blogs. Implement this interface and pass it to Tree. 1897-O Vintage Silver Barber Quarter, *Nice Better Date Coin for any collection*,US 1999 Pennsylvania State Quarter Coin Genuine Leather Studded Bracelet NOS,1938-S & 1945-S War Time Silver Nickel, CH BU!. The following code is pretty simple and straightforward. Vaadin developer don't and can't know anything about these generated keys, only about item identifiers. Kroubalkian Software developer. An add-on exists that lets us wire existing components to a JPA backend. TreeGrid is for displaying hierarchical tabular data laid out in rows and columns. Here's a quick overview of some of the most notable updates. A Tree component for Vaadin Flow based on TreeGrid - amahdy/vaadin-tree. I want to select nodes using checkboxes. When a set of filters are set, only items that match all the filters are included in the visible contents of the conta. Lazy Loading With Vaadin 8 Vaadin 8's Grids, with the help of lambda expressions, make it remarkably easy to implement lazy loading, a vast improvement over the old methods. Afters struggling for almost 3 days, I finally got some vaadin add-ons working for me. MongoDB/Document-Oriented data stores Certified Vaadin Developer and loving it! Java/Groovy,GWT,iPhone,iPodTouch And now with iPad!. Vaadin is a large collection of UI components. It allowed us to understand how C manages memory internally while running a program trough the extensive use of pointers and it also allowed us to understand how self-referenced data structures work. As one of the best web frameworks based on Java, Vaadin is well worth getting familiar with. Easy Way to Remove Tree Stumps - Part 1 - Duration: 4:06. A Vaadin application typically extends the UI class. Tag: java,algorithm,data-structures,tree,binary-tree In the following program, what does this mean left. Vaadin as a company seems to be growing quite nicely, they have 140 employees and $11M revenue these days. Name Email Dev Id Roles Organization; Seth Leger: sethopennms. vaadin-grid is a free, high quality data grid / data table Web Component. // That's how the DOM tree will look. The view switching can be based e. I have three hierarchy tree menu. 1 (823 ratings) Course Ratings are calculated from individual students' ratings and a variety of other signals, like age of rating and reliability, to ensure that they reflect course quality fairly and accurately. txt) or read online for free. 1 2001 Open Source 5. When I run it I get a NullPointException on line 15 but I haven't been able to figure out why. :) The real deal is here (that tu. Starting the Java Code. you can filter the values by typring into textbox. In that, I need to add a duplicate Item in a Tree. Coproject - rich project management #opensource. I then want to multiply the levelSum by the number of the level that I am at and add this to the totalSum. I'm working on a binary search tree and try to write a method for creating minimum BST from an array values. setItemDescriptionGenerator to generate mouse over descriptions ("tooltips") for the rows and cells in Table or for the items in Tree. I'm joining Y TREE Limited in October 2019 as the Lead Developer. Vaadin Valo Theme Menu Lorem Ipsumdolor Common UI Elements. Hierarchical. Select all the Vaadin plugins in the tree. Google Web Toolkit. Vaadin 7 4. parent = this; I know it says make parent of left child to be ' this ' but what exactly is this. The server-driven programming model is the more powerful one. Vaadin Flow (previously Vaadin Framework) is a web framework for building web applications and websites. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. It is otherwise identical to the Grid component, but it adds the possibility to show hierarchical data, allowing the user to expand and collapse nodes to show or hide data. Vaadin - Tree - Custom components and validation. Combo box is a. SVG code for vaadin-tree-table. Select all the Vaadin plugins in the tree. Size of Java Script file. Vaadin provides a cool interface to use a theme with in a second with the help of its own Java based SAAS compiler. My main role is Java developer in various existing or new projects, as well as periodically part of systems 3rd line support team which takes over requests coming from operations. TreeGrid is for displaying hierarchical tabular data laid out in rows and columns. com Hot Tip You can embed Vaadin applications to any web page in div or iframe elements. Polymer Dart is a community based effort to bring latest Polymer and web standards to Dart Vittorio Ballestra. You'll need to know a little Html, Css and JavaScript (jQuery, because I'm lazy). Vaadin supports two different programming models: server-side and client-side. When should I use it? 4. Chad Johnston [email protected] Le muestra cómo empezar, proporciona un buen compendio de las características del framework. When tree node is dragged client puts that key to Transferable s client side counterpart. This project was based on more advanced data structures like HashTables and Binary Search Trees. The components use events, listeners, and data binding to communicate with each other and the business logic. A developer looks at the new Vaadin 10 web framework, concluding that it is an excellent experimental space for new ideas and approaches to UI building. I want to select nodes using checkboxes. Skip to content. EDIT: Cuba DataGrid has header & footer row, my bad Hi Do Cuba team plan to integrate Vaadin TreeGrid at some point ? It is currently available in Vaadin 7 through an official addon and will be integrated in Vaadin 8. I am in the process of creating a binary tree for a project I've been working on where I insert people into a binary tree by name (the tree iterates through each character to determine which is bigger when inserting). 1952-P D S 25C Washington Head Quarters, 3 Coins 90% Silver,2013 ATB Great Basin National Park P & D Quarter Rolls - US Mint - KW024,1991-S 25c PCGS PR70DCAM WASHINGTON QUARTER PROOF DEEP CAMEO PR 70 DC. [book-of-vaadin-page14-1. Vaadin Valo Theme Menu Lorem Ipsumdolor Common UI Elements. this refers to current instance method right? but can anyone explain a bit better. Building mobile applications with Vaadin TouchKit 1. Rule of product: If an action can be performed by making A choices followed by B choices, then it can be performed ways. Rapid development of RIA in Vaadin 7 with Grails services, GORM, environments and i18 features. Clone via HTTPS Clone with Git or checkout with SVN using the repository's web address. Column widths are actually updated for all the table, when expanding/collapsing nodes!. Technologies: Java, C++, Vaadin, Spring, Apache Tomcat, Apache Maven, Ehcache, Drools, MySQL, Scala, Gatling, JUnit Development of the Web FE framework in the MillenniumIT Post Trade Product Phase 2 Implementation - Millennium CSD. Clone via HTTPS Clone with Git or checkout with SVN using the repository’s web address. PROCESSOR_REVISION=4e03, spring-kafka. Notice the special vaadin servlet and the configuration in the configuration class. A Tree component for Vaadin Flow based on TreeGrid - amahdy/vaadin-tree. You'll need to know a little Html, Css and JavaScript (jQuery, because I'm lazy). The largest part of my work is in back-end but also contributing in front-end (Vaadin, Vue. After trying many ways and goggling, I could not find how to add CheckBox component to a tree node. toukokuuta 12. png] Finally, click Install. Search Search. In this project, I am contributing with Metawidget team to extend this framework in order to support Vaadin (One of the Front-Ends technologies that is based on GWT) Metawidget is an OIM (Object Interface Mapper) framework. PROCESSOR_REVISION=4e03, spring-kafka. TreeGrid is for displaying hierarchical tabular data laid out in rows and columns. The server-driven programming model is the more powerful one. There are 3 filtering modes available: FilteringMode. 1, What We Aim At earlier. Vaadin Framework is a UI framework with a server-side programming model, in which all the UI logic and its state live on a server, and a web browser executes only the code of UI widgets. Chakri Cherukuri talks about how to understand and visualize machine learning models using interactive widgets. Vaadin is a Rich Internet Application technology built on top of the Google Web Toolkit. Effect: When comparing M5's config tree with a Vaadin prototype using the same JCR containers, there was still quite a big latency in the config tree when expanding a node.