Variable nodeHandlersConst

Defines nodes and node structure of media tree (and other trees as well)

e.g. nodeHandlers.playlist defined how a playlist node will behave and which view will be shown

Example (see /sampleScripts/customNodes/viewHandlers_add.js for further examples, and/or the individual node handlers below):

nodeHandlers.myNewHandler = inheritNodeHandler('MyNewHandlerClass', 'Base', {
    title: // node title (string or funct. returning string)
    // the following are optional:
    setTitle: // when renamed using F2 key or in-place edit
    icon: // node icon (string or funct. returning string)
    onExpanded: //  code to perform on node expand
    onCollapsed: // code to perform on node collapse         
    hasChildren: // whether there are some children nodes (boolean, default false)
    hasTreeChildren: // optional - for some nodes we want to limit the hierarchy in TreeView (while keep it in NavigationBar or NodeListView)
    getChildren: function (node) {  // child nodes to be added 
        return new Promise(function (resolve, reject) {
            app.getObject('genre', {name: 'rock'}).then(function (object) {
                node.addChild(object, 'genre'); // this adds new child where object will become dataSource of the new child node and 'genre' says that nodeHandlers.genre will be used as handler for the new node
            });
        });
    },    
    viewAs: ['tracklist'] // says that viewHandlers.tracklist defines the view    
    canDelete: // whether the node can be deleted (boolean, default false)
    deleteItems: // delete behaviour   
    canReorderNodes: // whether nodes can be reordered (boolean, default false) 
    canDrop: // whether can drop/paste on this node (boolean, default false)
    getDropMode: // drop mode (e.g. based on shift key)    
    drop: // drop behaviour
    formatStatus: // to define custom format status (i.e. the text shown on the status bar)
    toolbarActions: [], // custom actions to add on toolbar, actions have to contain identifier property with action id
    menu: [], // custom popup-menu
    hideDefaultMenu: true, // don't append the default popup-menu
});
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