声明性Dijit / ContentPane中未出现程序化Dijit /树

Question

Can anyone help me figure out why this works in Dojo 1.8 but not in 1.9?

In 1.8, the tree is placed within the “pilotTreeContainer” contentpane. In 1.9, the tree is there if you look in Firebug but visually, it just shows a loading graphic. pilotTreeContainer is declared in the template file for the widget that contains this code. All this code is in the postCreate method.

var treeStore = lang.clone( store );

var treeModel = new ObjectStoreModel(
{
    store: treeStore,
    query: { id: 'all' },
    mayHaveChildren: function ( item ) // only ships have the unique attribute
    {
        return item.unique === undefined;
    }
} );

var pilotTree = new Tree(
{
    model: treeModel, // do we need to clone?
    autoExpand: true,
    showRoot: false,
    title: 'Click to add',
    openOnClick: true,
    getDomNodeById: function ( id ) // new function to find DOM node
    {
        if ( this._itemNodesMap !== undefined && this._itemNodesMap[ id ] !== undefined && this._itemNodesMap[ id ][0] !== undefined ) {
            return this._itemNodesMap[ id ][0].domNode;
        }
        else {
            return null;
        }
    }
} );


this.pilotTree = pilotTree;

this.pilotTreeContainer.set( 'content', pilotTree );

I've tried calling startup on both tree and contentpane.

Debugging the dijit/Tree code, it seesm that there is a deferred which never resolves. It is returned from the _expandNode function when called from the _load function (when trying to expand the root node this._expandNode(rn).then ).

The part that fails in dijit/Tree is this:

// Load top level children, and if persist==true, all nodes that were previously opened
this._expandNode(rn).then(lang.hitch(this, function(){
    // Then, select the nodes specified by params.paths[].
    this.rootLoadingIndicator.style.display = "none";
    this.expandChildrenDeferred.resolve(true);
}));

Why is the tree not showing? What is going wrong?

Answer 1

Coming back to this (in the hope that it would be solved in Dojo 1.10), I have found a fix.

I abstracted the tree into its own module, adding it to the container with placeAt() instead of using this.pilotTreeContainer.set( 'content', pilotTree ); :

// dijit/Tree implementation for pilots
pilotTree = new PilotTree( 
{
    model: treeModel 
} );


// add to container
pilotTree.placeAt( this.pilotTreeContainer.containerNode ); 
pilotTree.startup();

then forced it to show its content within the tree's startup() method:

startup: function()
{
    this.inherited( arguments );

    // force show!
    this.rootLoadingIndicator.style.display = "none";
    this.rootNode.containerNode.style.display = "block";
},