Sencha - combo box

After creating a combo box, we have to

 

- Set the url. 

- Set id and autoRef.

- minChars: 0,

- displayField: 'filename',  (which is one of components of the fileStore.)

For 'load project preset',

we need to set autoRef: fileLoadForm2 of the FormPanel, 

and autoRef: loadProjectPresetButton2 of the Button, 

and then implement as follows (MainPanel.js)

this.loadProjectPresetButton2.on('click', this.onSubmitClick.createCallback(this, this.fileLoadForm2, false));

this.loadProjectPresetButton2.on('click', this.delayRefreshAllTrees, this );

In addition, Tree.py 

if "fileSelectCombobox2" in e.__dict__:

self.loadTree(os.path.join(BASE_PROJECT_FOLDERS[0],e.fileSelectCombobox2)+PROJECTFILE_INDICATOR)

// Upload from Vizard to Browser of saved trees.//

socket.onevent('saved_trees', function(e){
//})

# Strip ?_dc request
#page_request = page_request.split('?_dc')[0]