![]() ![]() So, the following code will load in the patient information (the first data block), then three seconds later will append the physicians information (the second data block): var treeview = new Treeview(".treeview","") treeview.replaceData(patients) setTimeout(()=>treeview.It looks like you want to go from this structure: The element also echoes the open state of the element and is used by the treeview to highlight the most recently selected item, regardless of whether the treeview has the focus or not. Rather, it contains just enough information to display content in the tree and identify the keys that will then retrieve the detailed content from some external data source. This structure should not contain all of the information from the dataset. Meanwhile, the type: identifies the base class or type for the resource in question (it’s not used here, but may be used for querying databases for new resources or for similar UI needs). If it does, then a folder icon is displayed, if it doesn’t, a generic object icon is shown. If it isn’t given, then the walkTree() routine checks to see whether a resource has a children:property. The icon: attribute is used to identify a custom icon for a given entry. The remaining properties should generally be atomic, and represent information that will be added as data-* attributes to each element. Each object also has a label: property that identifies the label that will appear as the text of each line in the tree. The first object contains patient information, with the primary keys for each object being either part of the root object or part of the children: object. This uses the concept of a keyed data set. ![]() Making this functional then requires only one more step, a bit of Javascript to capture selection events: document.querySelector(".treeview").addEventListener("click",(event)=> For instance, with no Javascript code, it is possible to build a basic static data tree. This simple building block can go a long way towards handling some of the more problematic event management that treeviews require, and can do so more efficiently (when native) than is typically the case with Javascript components. This would be encoded as follows: A visible tag Anything that isn't the summary remains hidden until either the item is clicked or some kind of toggle is selected. In particular, the and elements can be nested in much the same way as (or ) and list tags, but have the advantage of allowing users to show or hide most of a section within a block except for the content of a child element, as shown in Figure 1. ![]() However, a new set of tags in HTML5, and a bit of creative CSS work, can make treeview controls surprisingly easy to build. A lot of this disfavor comes down to the complexity in creating dynamic treeviews. Part of this can be attributed to shifting design styles for web pages and web applications that have favored activity streams over hierarchical content, some of it has to do with a move towards data binding facilities that don’t necessarily work well with recursive data. Yet as applications have shifted to the web, the once common treeview control has become more rare. The ability to drill down into a hierarchy of information, and to open and close “folders” made organization of content that may have thousands of entries feasible. Treeview controls were once a staple of desktop applications. ![]()
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |