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

Introduction

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

Prototype

BeforeCloseHandler

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  ww  w . jav  a  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:com.google.gwt.gen2.demo.fasttree.client.FastTreeDemo.java

License:Apache License

private Widget dynamicTree() {
    FlowPanel container = new FlowPanel();

    // Add Tree//  ww w  . j  a va 2  s. c om
    final FastTree topTree = new FastTree();
    FastTreeItem firstBranch = topTree.addItem("Inbox (3)");
    firstBranch.addItem("Urgent");
    FastTreeItem familyBranch = firstBranch.addItem("Family");
    familyBranch.becomeInteriorNode();
    familyBranch.addItem("Mom");
    familyBranch.addItem("Brosef");
    FastTreeItem secondBranch = firstBranch.addItem("Calendar");
    secondBranch.addItem("Important Meetings");
    container.add(topTree);

    final Button btnAdd = new Button("Add to Family Branch", new ClickHandler() {

        public void onClick(ClickEvent event) {
            FastTreeItem selectedItem = topTree.getChild(0).getChild(1);
            Window.alert("Adding new " + selectedItem.getText() + " Child Nodes");
            selectedItem.addItem("Dad");
            selectedItem.addItem("Sissef");
        }
    });

    final Button btnKill = new Button("Disown Family Branch", new ClickHandler() {

        public void onClick(ClickEvent event) {
            FastTreeItem selectedItem = topTree.getChild(0).getChild(1);
            Window.alert("Disowning " + selectedItem.getText() + " Child Nodes");
            selectedItem.becomeLeaf();
            btnAdd.setVisible(true);
        }
    });

    topTree.addBeforeCloseHandler(new BeforeCloseHandler<FastTreeItem>() {
        public void onBeforeClose(BeforeCloseEvent<FastTreeItem> event) {
            btnKill.setVisible(event.getTarget().getText().equals("Family"));
        }
    });
    btnKill.setVisible(false);
    btnAdd.setVisible(false);

    container.add(btnKill);
    container.add(btnAdd);

    return container;
}

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