Hi Ingrid,
the difference between Tree and TreeVirtual is that the latter only
displays the nodes that are currently visible, making it very useful for
structures with lots of entries, like a file system explorer for example.
In your code, you're using the "regular" Tree but are trying to use the
getHierarchy method in your listener for the "changeSelection" event,
which is a method of TreeVirtual. changeSelection's event data contains
an array of selected tree nodes, so you can set your text field's value
like this:
this.setValue(nodes[0].getLabel());
Some more hints:
* Since you're not using TreeVirtual, you can remove the
qx.Class.include statement.
* Whatever "buttonRemove" is, it's not defined.
* The VBox Layout you're using doesn't support the "left" property, so
you can't use that when adding widgets to commandFrame.
As for your second question, I'm afraid I don't know anything about PHP
in general and its session handling in particular, so I can't help you
there :(
Regards,
Daniel
Ingrid Lohmann schrieb:
> Hi,
>
> at the I'm developing an application with a filebrowser-like interface. In
> the left Window I have an explorer-like root-directory and in the "main"
> right window "reports" are supposed to shown (generated out of a database).
>
> With the following code I tried to find a way to control the right window by
> clicking in the left root directory ... but it didn't work.
>
> Of course its possible to achieve this by using
> "qx.ui.treevirtual.TreeVirtual"
>
> but I like the look and and feel of "TreeFolder" and "TreeFile"
> ... so I just have difficulties with the event handling.
>
> --------begin code---------
>
> qx.Class.define("custom.Application",
> {
> extend : qx.application.Standalone,
>
> members :
> {
> main : function()
> {
> this.base(arguments);
> // We want to use some of the high-level node operation convenience
> // methods rather than manually digging into the TreeVirtual helper
> // classes. Include the mixin that provides them.
> qx.Class.include(qx.ui.treevirtual.TreeVirtual,
> qx.ui.treevirtual.MNode);
>
> // Use an HBox to hold the tree and the groupbox
> var hBox = new qx.ui.container.Composite(new qx.ui.layout.HBox(20));
> this.getRoot().add(hBox, { edge : 30 });
>
>
>
> // CREATING THE TREE
> var tree = new qx.ui.tree.Tree().set({
> width : 200,
> height : 800
> });
>
> // Creat a folder and set it the root folder
> var root = new qx.ui.tree.TreeFolder("root");
> tree.setRoot(root);
>
> // Create some folders:
> var te1_1 = new qx.ui.tree.TreeFolder("Files");
> var te1_2 = new qx.ui.tree.TreeFolder("Workspace");
> var te1_3 = new qx.ui.tree.TreeFolder("Network");
> var te1_4 = new qx.ui.tree.TreeFolder("Trash");
>
> // Create some content (leaves) and add it to the "Files" folder:
> var te1_2_1 = new qx.ui.tree.TreeFile("Windows (C:)");
> var te1_2_2 = new qx.ui.tree.TreeFile("Documents (D:)");
> te1_2.add(te1_2_1, te1_2_2);
>
>
> var te1_2_1_1 = new qx.ui.tree.TreeFile("Eigene Dateien");
> te1_2_1_1.addListener("execute", function(e)
> {
> alert("Hello AntiWorld!");
> }
> )
>
> te1_2_1.add(te1_2_1_1);
>
> // Add the content to the root folder
> root.add(te1_1, te1_2, te1_3, te1_4);
>
>
> // Add the root widget to the appliation
>
> hBox.add(tree);
>
> var commandFrame = new qx.ui.groupbox.GroupBox("Control");
> commandFrame.setLayout(new qx.ui.layout.VBox(2));
>
> hBox.add(commandFrame);
>
>
> var o = new qx.ui.basic.Atom("Current Selection: ");
> commandFrame.add(o, { left: 0, top: 6 });
>
> o = new qx.ui.form.TextField();
> o.set({ readOnly: true });
> commandFrame.add(o, { left : 4, right : 0, top : 20 });
>
>
> tree.addListener(
> "changeSelection",
> function(e)
> {
> // Get the list of selected nodes. We're in single-selection mode,
> // so there will be only one of them.
> var nodes = e.getData();
> this.setValue(tree.getHierarchy(nodes[0].nodeId).join('/'));
> buttonRemove.setEnabled(true);
>
> },
> o);
>
> }
> }
> });
>
> --------end code---------
>
> my second questions is concerned with sessions. I want to create a login
> Page. I found an example in the Demo-Browser. But what is the best way to
> control the session. Ist it possible to make this via php, i.e. having an
> index.php rather than index.html, looking e.g. like:
> <$php
> include functions.php
> ?>
> <html xmlns="http://www.w3.org/1999/xhtml"; xml:lang="en">
> <head>
> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
> <title>custom</title>
> <script type="text/javascript" src="script/custom.js"></script>
> </head>
>
> ...
>
> hints / best practises would be nice.
>
> Its nice framework and fun to work with it !
>
> I'm looking forward to your answers...
>
> regards,
>
> Poc
>
>
>
>
>
>
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