Added TreeExample

svn changeset:3049/svn branch:trunk

2 files changed, 116 insertions, 1 deletions

diff --git a/src/com/itmill/toolkit/demo/featurebrowser/FeatureBrowser.java b/src/com/itmill/toolkit/demo/featurebrowser/FeatureBrowser.java
index 9f9fc7add4..7eb07b81fe 100644
--- a/src/com/itmill/toolkit/demo/featurebrowser/FeatureBrowser.java
+++ b/src/com/itmill/toolkit/demo/featurebrowser/FeatureBrowser.java
@@ -75,7 +75,7 @@ public class FeatureBrowser extends com.itmill.toolkit.Application implements
                     Button.class, Boolean.FALSE },
             // Organizing: Tree
             { "Organizing", "Tree", "Some variations of Buttons and Links",
-                    Button.class, Boolean.FALSE },
+                    TreeExample.class, Boolean.FALSE },
             // Misc: Notifications
             { "Misc", "Notifications", "Notifications can improve usability",
                     NotificationExample.class, Boolean.FALSE },
diff --git a/src/com/itmill/toolkit/demo/featurebrowser/TreeExample.java b/src/com/itmill/toolkit/demo/featurebrowser/TreeExample.java
new file mode 100644
index 0000000000..4f2137644f
--- /dev/null
+++ b/src/com/itmill/toolkit/demo/featurebrowser/TreeExample.java
@@ -0,0 +1,115 @@
+package com.itmill.toolkit.demo.featurebrowser;
+
+import com.itmill.toolkit.data.Item;
+import com.itmill.toolkit.data.Property;
+import com.itmill.toolkit.data.Property.ValueChangeEvent;
+import com.itmill.toolkit.event.Action;
+import com.itmill.toolkit.ui.CustomComponent;
+import com.itmill.toolkit.ui.Label;
+import com.itmill.toolkit.ui.OrderedLayout;
+import com.itmill.toolkit.ui.TextField;
+import com.itmill.toolkit.ui.Tree;
+
+/**
+ * 
+ */
+public class TreeExample extends CustomComponent implements Action.Handler,
+        Tree.ValueChangeListener {
+
+    private static final Action ADD = new Action("Add item");
+    private static final Action DELETE = new Action("Delete item");
+    private static final Action[] actions = new Action[] { ADD, DELETE };
+
+    private static final Object CAPTION_PROPERTY = "caption";
+
+    private static final String desc = "Select an item in the tree to edit it's"
+            + " caption. Right-click to add or remove items.";
+
+    Tree tree;
+    TextField tf;
+
+    public TreeExample() {
+        OrderedLayout main = new OrderedLayout();
+        main.setMargin(true);
+        setCompositionRoot(main);
+        // Description
+        main.addComponent(new Label(desc));
+        // Caption editor
+        tf = new TextField("Edit item caption");
+        tf.setImmediate(true);
+        tf.setEnabled(false);
+        tf.setColumns(15);
+        main.addComponent(tf);
+
+        // Add tree with a few items
+        tree = new Tree();
+        tree.setImmediate(true);
+        tree.addContainerProperty(CAPTION_PROPERTY, String.class, "");
+        tree.setItemCaptionMode(Tree.ITEM_CAPTION_MODE_PROPERTY);
+        tree.setItemCaptionPropertyId(CAPTION_PROPERTY);
+        for (int i = 1; i <= 3; i++) {
+            Object id = addCaptionedItem("Section " + i, null);
+            tree.expandItem(id);
+            addCaptionedItem("Team A", id);
+            addCaptionedItem("Team B", id);
+        }
+        tree.addListener(this);
+        tree.addActionHandler(this);
+        main.addComponent(tree);
+
+    }
+
+    public Action[] getActions(Object target, Object sender) {
+        return actions;
+    }
+
+    public void handleAction(Action action, Object sender, Object target) {
+        if (action == DELETE) {
+            tree.removeItem(target);
+        } else {
+            // Add
+            Object id = addCaptionedItem("New Item", target);
+            tree.expandItem(target);
+            tree.setValue(id);
+            tf.focus();
+        }
+    }
+
+    public void valueChange(ValueChangeEvent event) {
+        Object id = tree.getValue();
+        if (event.getProperty() == tree) {
+            if (id == null) {
+                tf.removeListener(this);
+                tf.setValue("");
+                tf.setEnabled(false);
+
+            } else {
+                tf.setEnabled(true);
+                Item item = tree.getItem(id);
+                tf.setValue(item.getItemProperty(CAPTION_PROPERTY).getValue());
+                tf.addListener(this);
+            }
+        } else {
+            // TextField
+            if (id != null) {
+                Item item = tree.getItem(id);
+                Property p = item.getItemProperty(CAPTION_PROPERTY);
+                p.setValue(tf.getValue());
+                tree.requestRepaint();
+            }
+
+        }
+    }
+
+    private Object addCaptionedItem(String caption, Object parent) {
+        Object id = tree.addItem();
+        Item item = tree.getItem(id);
+        Property p = item.getItemProperty("caption");
+        p.setValue(caption);
+        if (parent != null) {
+            tree.setParent(id, parent);
+        }
+        return id;
+    }
+
+}