使用eclipse open type对话框

需要依赖jdt的相关插件(ui和core)

具体调用方法：

Shell parent= JavaPlugin.getActiveWorkbenchShell();
OpenTypeSelectionDialog dialog= new OpenTypeSelectionDialog(parent, false,
PlatformUI.getWorkbench().getProgressService(),SearchEngine.createWorkspaceScope(), IJavaSearchConstants.TYPE);
dialog.setTitle(ActionMessages.OpenTypeInHierarchyAction_dialogTitle);
dialog.setMessage(ActionMessages.OpenTypeInHierarchyAction_dialogMessage);
int result= dialog.open();
if (result != IDialogConstants.OK_ID)
   return;

Object[] types= dialog.getResult();
if (types != null && types.length > 0) {
   IType type= (IType)types[0];
}

拿到的type就是选中的对象，类型为org.eclipse.jdt.core.IType。