Aloha all
just had a hair pulling and head scratching session lasting two hours,
lots of googling, lots of stuff not working out, here's the solution,
which seems to do the trick on qx-5.0:
var tree = new qx.ui.tree.VirtualTree(null, "name", "children").set({
width : 250,
padding: 0,
backgroundColor: 'transparent'
});
tree.setDecorator(null);
//trepr contains some JSON string modelling the tree, coming from the
//server
"""
{"path": "../data", "name": "root", "children": [{"path": "../data",
"name": "item1"}, {"path": "../data", "name": "item2"}]}
"""
var model = qx.data.marshal.Json.createModel(JSON.parse(trepr), true);
tree.setModel(model); // connect the store and the tree
//open the root node
tree.openNode(tree.getModel().getChildren().getItem(0));
//double click handler, show some getter results (model dependent)
function _onDblClickItem(e) {
var item = e.getTarget();
alert(item.getModel().getPath() + '/' + item.getModel().getName());
}
//right click handler
function _onContextMenu(e) {
var item = e.getTarget();
var selection = tree.getSelection();
selection.setItem(0, item.getModel());
var contextMenu = new qx.ui.menu.Menu();
contextMenu.setMinWidth(120);
var newButton = new qx.ui.menu.Button("New");
var editButton = new qx.ui.menu.Button("Edit");
contextMenu.add(editButton);
contextMenu.add(newButton);
contextMenu.openAtPointer(e);
contextMenu.addListenerOnce("disappear", function(e) {
contextMenu.getChildren().forEach(function(w) {
w.dispose();
});
contextMenu.dispose();
});
}
tree.setDelegate({
bindItem : function (controller, item, id) {
controller.bindDefaultProperties(item, id);
item.addListener("dblclick", _onDblClickItem, this);
item.addListener("contextmenu", _onContextMenu, this);
},
//removing the stuff we bound earlier on
onPool : function(item) {
item.removeListener("dblclick", _onDblClickItem, this);
item.removeListener("contextmenu", _onContextMenu, this);
}
});
Werner
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