ProjectSettingDialog.java 文件源码

/**
 * Selects the saved item in the tree of preference pages. If it cannot do this it saves the first one.
 */
protected void selectSavedItem() {
    IPreferenceNode node = findNodeMatching(getSelectedNodePreference());
    if (node == null) {
        IPreferenceNode[] nodes = preferenceManager.getRootSubNodes();
        ViewerComparator comparator = getTreeViewer().getComparator();
        if (comparator != null) {
            comparator.sort(null, nodes);
        }           
        for (int i = 0; i < nodes.length; i++) {
            IPreferenceNode selectedNode = nodes[i];
            if (selectedNode != null) {
                node = selectedNode;
                break;
            }
        }
    }
    if (node != null) {
        getTreeViewer().setSelection(new StructuredSelection(node), true);
        // Keep focus in tree. See bugs 2692, 2621, and 6775.
        getTreeViewer().getControl().setFocus();
        boolean expanded = getTreeViewer().getExpandedState(node);
        getTreeViewer().setExpandedState(node, !expanded);
    }
}