The ngx-treeview component is easy to use and build a tree view structure with the object provided. The (selectedChange) and (filterChange) events can be added to trigger events during any selection is changed or filter control is used to search items. hasDivider: Add a divider between “All” master checkbox and tree item list.Įvent Handling During Selection and Filter Search.maxHeight: A max-height property can be added after which a scroll-bar will appear.decoupleChildFromParent: It decouples the parents from the child during filter search results.hasCollapseExpand: A double-side arrow icon to expand or collapse all list items at once.hasFilter: Show/ Hide Search filter tree view list.hasAllCheckBox: Adds a master checkbox on top with the “All” label to control the checkbox selection state.The following properties can be configured to change representational and functional behavior: Open the file and update its content as shown below: // Now import the TreeviewModule to use its components across the Angular application. Then update the styles.scss file with bootstrap.scss file import "~bootstrap/scss/bootstrap.scss" Install the bootstrap package by hitting below the npm command. Include bootstrap.css in the index.html file’s section $ npm install ngx-treeview -saveĪs a dependency for adding style, we need to import the bootstrap style files. Next, install the ngx-treeview package by executing below npm command at the project root. # ? Which stylesheet format would you like to use? SCSSĮnter the project directory $ cd angular-ngx-treeview-app # ? Would you like to add Angular routing? No Run the following ng command to create a new Angular project $ ng new angular-ngx-treeview-app How to add Tree View with Checkboxes in Angular App? Let’s start implementation with an example application. So Lodash and Bootstraps are the required dependencies for using the ngx-treeview. The ngx-treeview package uses Lodash helper functions to optimize the logical operations on the tree view and Bootstrap to style the elements.
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