Example usage for com.google.gwt.gen2.commonevent.shared BeforeOpenHandler BeforeOpenHandler

Introduction

In this page you can find the example usage for com.google.gwt.gen2.commonevent.shared BeforeOpenHandler BeforeOpenHandler.

Prototype

BeforeOpenHandler

Source Link

Usage

From source file:com.google.gwt.gen2.demo.fasttree.client.FastTreeDemo.java

License:Apache License

/**
 * Creates a lazy tree.//from   www.  j  av  a2 s.  com
 */
protected Widget lazyTree() {
    final FastTree t = new FastTree();
    lazyCreateChild(t, 0, 50);
    t.addBeforeOpenHandler(new BeforeOpenHandler<FastTreeItem>() {
        public void onBeforeOpen(BeforeOpenEvent<FastTreeItem> event) {
            if (event.isFirstTime()) {
                for (int i = 0; i < 50; i++) {
                    lazyCreateChild(event.getTarget(), i, 50 + (i * 10));
                }
            }
        }
    });
    return t;
}

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From source file:com.google.gwt.gen2.demo.fasttree.client.FastTreeDemo.java

License:Apache License

protected Widget verboseTree() {
    FastTree tree = new FastTree();
    verboseTreeItem(tree, 10);/*from   w w w .  j  a va  2s  .co  m*/
    tree.addOpenHandler(new OpenHandler<FastTreeItem>() {

        public void onOpen(OpenEvent<FastTreeItem> event) {
            Window.alert("Opened " + event.getTarget().getHTML());
        }
    });
    tree.addCloseHandler(new CloseHandler<FastTreeItem>() {

        public void onClose(CloseEvent<FastTreeItem> event) {
            Window.alert("Close " + event.getTarget().getHTML());
        }
    });
    tree.addSelectionHandler(new SelectionHandler<FastTreeItem>() {

        public void onSelection(SelectionEvent<FastTreeItem> event) {
            Window.alert("You selected " + event.getSelectedItem().getHTML());
        }
    });
    tree.addBeforeOpenHandler(new BeforeOpenHandler<FastTreeItem>() {

        public void onBeforeOpen(BeforeOpenEvent<FastTreeItem> event) {
            if (Window.confirm("Would you like to change the name of the item before opening it?")) {
                event.getTarget().setHTML("Name changed before open.");
            }
        }
    });
    tree.addBeforeCloseHandler(new BeforeCloseHandler<FastTreeItem>() {

        public void onBeforeClose(BeforeCloseEvent<FastTreeItem> event) {
            if (Window.confirm("Would you like to change the name of the item before closing it?")) {
                event.getTarget().setHTML("Name changed before close.");
            }
        }
    });
    return tree;
}

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From source file:org.pentaho.pat.client.ui.widgets.DimensionTreeWidget.java

License:Open Source License

protected Widget onInitialize() {

    dimensionTree = new FastTree();
    lazyCreateChild(dimensionTree.getTreeRoot(), 0, 50);

    dimensionTree.addBeforeOpenHandler(new BeforeOpenHandler<FastTreeItem>() {

        public void onBeforeOpen(BeforeOpenEvent<FastTreeItem> event) {
            parentItem = (FastTreeItem) event.getTarget();
            if (event.isFirstTime()) {
                lazyCreateChilds();/*www  .j  ava 2  s .c  o m*/
            }
        }
    });

    final ScrollPanel panel = new ScrollPanel();
    panel.add(dimensionTree);

    return panel;
}

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