According to my tests, having the context menu in the popup object alters the page's tree of elements and this seems to have repercussions on the View Source window; it just doesn't show up.
按照我的测试，在弹出对像中包含快捷菜单改变了页面的元素树并影响查看源代码窗口，不能显示。
Treeview - the default view mode which can show a tree hierarchy for the navigation.
treeview—缺省视图模式，它可以显示树层次结构的导航。
The Outline view (see Figure 4) in the BPWS4J editor is used to show the structure of the selected node in the process tree.
BPWS4J 编辑器中的 Outline 视图（请参见 图 4）用于显示流程树中选择的节点的结构。
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