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| author | Teppo Kurki <teppo.kurki@itmill.com> | 2009-01-14 13:14:45 +0000 |
|---|---|---|
| committer | Teppo Kurki <teppo.kurki@itmill.com> | 2009-01-14 13:14:45 +0000 |
| commit | 852c189a1eb82a00b5f4802c343b36dcb3e99c5c (patch) | |
| tree | e30c5902d8575b34571667a7a63cd4cacd5d3168 /src/com/itmill/toolkit/demo/sampler/features/trees/TreeSingleSelectExample.java | |
| parent | 3fe6d3804a44a5a0ebb56124f3860ef1946ac021 (diff) | |
| download | vaadin-framework-852c189a1eb82a00b5f4802c343b36dcb3e99c5c.tar.gz vaadin-framework-852c189a1eb82a00b5f4802c343b36dcb3e99c5c.zip | |
Added Tree examples and one helper method to ExampleUtil.
svn changeset:6532/svn branch:trunk
Diffstat (limited to 'src/com/itmill/toolkit/demo/sampler/features/trees/TreeSingleSelectExample.java')
| -rw-r--r-- | src/com/itmill/toolkit/demo/sampler/features/trees/TreeSingleSelectExample.java | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/src/com/itmill/toolkit/demo/sampler/features/trees/TreeSingleSelectExample.java b/src/com/itmill/toolkit/demo/sampler/features/trees/TreeSingleSelectExample.java new file mode 100644 index 0000000000..e68510050a --- /dev/null +++ b/src/com/itmill/toolkit/demo/sampler/features/trees/TreeSingleSelectExample.java @@ -0,0 +1,125 @@ +package com.itmill.toolkit.demo.sampler.features.trees;
+
+import com.itmill.toolkit.data.Item;
+import com.itmill.toolkit.data.Property;
+import com.itmill.toolkit.data.Property.ValueChangeEvent;
+import com.itmill.toolkit.demo.sampler.ExampleUtil;
+import com.itmill.toolkit.event.Action;
+import com.itmill.toolkit.ui.AbstractSelect;
+import com.itmill.toolkit.ui.Button;
+import com.itmill.toolkit.ui.HorizontalLayout;
+import com.itmill.toolkit.ui.TextField;
+import com.itmill.toolkit.ui.Tree;
+import com.itmill.toolkit.ui.VerticalLayout;
+import com.itmill.toolkit.ui.Button.ClickEvent;
+
+public class TreeSingleSelectExample extends VerticalLayout implements
+ Property.ValueChangeListener, Button.ClickListener, Action.Handler {
+
+ private static final Action ACTION_ADD = new Action("Add child item");
+ private static final Action ACTION_DELETE = new Action("Delete");
+ private static final Action[] ACTIONS = new Action[] { ACTION_ADD,
+ ACTION_DELETE };
+
+ private Tree t;
+ private TextField editor;
+ private Button change;
+ private int itemId;
+
+ public TreeSingleSelectExample() {
+ setSpacing(true);
+
+ // Create new Tree object using a hierarchical container from
+ // ExampleUtil class
+ t = new Tree("Hardware Inventory", ExampleUtil.getHardwareContainer());
+
+ // Add Valuechangelistener and Actionhandler
+ t.addListener(this);
+ t.addActionHandler(this);
+
+ t.setImmediate(true);
+
+ // Set tree to show the 'name' property as caption for items
+ t.setItemCaptionPropertyId(ExampleUtil.hw_PROPERTY_NAME);
+ t.setItemCaptionMode(AbstractSelect.ITEM_CAPTION_MODE_PROPERTY);
+
+ // Starting itemId # for new items
+ itemId = t.getContainerDataSource().size();
+
+ // Expand whole tree
+ for (int i = 0; i < itemId; i++) {
+ t.expandItemsRecursively(i);
+ }
+
+ // Create the 'editor bar' (textfield and button in a horizontallayout)
+ editor = new TextField();
+ editor.setImmediate(true);
+ change = new Button("Apply", this, "buttonClick");
+ change.setEnabled(false);
+ HorizontalLayout editBar = new HorizontalLayout();
+ editBar.addComponent(editor);
+ editBar.addComponent(change);
+
+ addComponent(editBar);
+ addComponent(t);
+
+ }
+
+ public void valueChange(ValueChangeEvent event) {
+ if (event.getProperty().getValue() != null) {
+ // If something is selected from the tree, get it's 'name' and
+ // insert it into the textfield
+ editor.setValue(t.getItem(event.getProperty().getValue())
+ .getItemProperty(ExampleUtil.hw_PROPERTY_NAME));
+ editor.requestRepaint();
+ change.setEnabled(true);
+ } else {
+ editor.setValue("");
+ change.setEnabled(false);
+ }
+ }
+
+ public void buttonClick(ClickEvent event) {
+ // If the edited value contains something, set it to be the item's new
+ // 'name' property
+ if (!editor.getValue().equals("")) {
+ t.getItem(t.getValue()).getItemProperty(
+ ExampleUtil.hw_PROPERTY_NAME).setValue(editor.getValue());
+ }
+ }
+
+ /*
+ * Returns the set of available actions
+ */
+ public Action[] getActions(Object target, Object sender) {
+ return ACTIONS;
+ }
+
+ /*
+ * Handle actions
+ */
+ public void handleAction(Action action, Object sender, Object target) {
+ if (action == ACTION_ADD) {
+ // Allow children for the target item
+ t.setChildrenAllowed(target, true);
+
+ // Create new item, disallow children, add name, set parent
+ Item i = t.addItem(itemId);
+ t.setChildrenAllowed(itemId, false);
+ String newItemName = "New Item # " + itemId;
+ i.getItemProperty(ExampleUtil.hw_PROPERTY_NAME).setValue(
+ newItemName);
+ t.setParent(itemId, target);
+ t.expandItem(target);
+ itemId++;
+ } else if (action == ACTION_DELETE) {
+ Object parent = t.getParent(target);
+ t.removeItem(target);
+ // If the deleted object's parent has no more children, set it's
+ // childrenallowed property to false
+ if (t.getChildren(parent).size() == 0) {
+ t.setChildrenAllowed(parent, false);
+ }
+ }
+ }
+}
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