Example usage for com.google.gwt.gen2.complexpanel.client FastTree addOpenHandler

Introduction

In this page you can find the example usage for com.google.gwt.gen2.complexpanel.client FastTree addOpenHandler.

Prototype

public HandlerRegistration addOpenHandler(OpenHandler<FastTreeItem> handler) 

Source Link

Usage

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  www .j a va2s .  c om*/
    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:com.google.gwt.gen2.demo.fasttree.client.FastTreeDemo.java

License:Apache License

private Widget crazyTree() {
    FastTree tree = new FastTree();
    FastTreeItem a = tree.addItem("I am root");
    a.addItem("I am root's child");
    FastTreeItem aXb = a.addItem("Root to become leaf.");
    aXb.addItem("a grand child");
    for (int i = 0; i < 10; i++) {
        aXb.addItem("grand child " + i);
    }/*from  w w  w  .j av a2  s  . c  om*/
    tree.addOpenHandler(new OpenHandler<FastTreeItem>() {

        public void onOpen(OpenEvent<FastTreeItem> event) {
            if (!event.getTarget().isLeafNode()) {
                if (Window.confirm("Would you like me to become a leaf?")) {
                    event.getTarget().becomeLeaf();
                }
            }
        }
    });

    return tree;
}

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