Example usage for com.vaadin.ui Tree addExpandListener

Introduction

In this page you can find the example usage for com.vaadin.ui Tree addExpandListener.

Prototype

public Registration addExpandListener(ExpandListener<T> listener) 

Source Link

Document

Adds an ExpandListener to this Tree.

Usage

From source file:com.haulmont.cuba.web.app.folders.CubaFoldersPane.java

License:Apache License

protected void collapseItemInTree(Tree tree, final String foldersCollapse) {
    String s = userSettingService.loadSetting(foldersCollapse);
    List<UUID> idFolders = strToIds(s);
    //noinspection unchecked, RedundantCast
    for (AbstractSearchFolder folder : (Collection<AbstractSearchFolder>) tree.getItemIds()) {
        if (idFolders.contains(folder.getId())) {
            tree.collapseItem(folder);//from  ww  w.j a  va 2  s  .  co m
        }
    }
    tree.addExpandListener(new Tree.ExpandListener() {
        @Override
        public void nodeExpand(Tree.ExpandEvent event) {
            if (event.getItemId() instanceof AbstractSearchFolder) {
                UUID uuid = ((AbstractSearchFolder) event.getItemId()).getId();
                String str = userSettingService.loadSetting(foldersCollapse);
                userSettingService.saveSetting(foldersCollapse, removeIdInStr(str, uuid));
            }
        }
    });
    tree.addCollapseListener(new Tree.CollapseListener() {
        @Override
        public void nodeCollapse(Tree.CollapseEvent event) {
            if (event.getItemId() instanceof AbstractSearchFolder) {
                UUID uuid = ((AbstractSearchFolder) event.getItemId()).getId();
                String str = userSettingService.loadSetting(foldersCollapse);
                userSettingService.saveSetting(foldersCollapse, addIdInStr(str, uuid));
            }
        }
    });
}

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