@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
HttpSession session = request.getSession(false);
User user = (User) session.getAttribute("user");
MessageBox messageBox = new MessageBox();
// Check the permissions.
if (user.getRole() == UserRole.ADMIN || user.getRole() == UserRole.EDITOR) {
if (request.getParameter("selectionIds") == null) {
// The method is called from the chain list page.
this.doGet(request, response);
} else {
// The method is called from the chain delete page.
String[] selection = (request.getParameter("selectionIds")).split(",");
List<String> selectionList = chainIdsToListOfTitles(selection);
for (int i = 0; i < selection.length; i++) {
ChainService.removeChain(Long.valueOf(selection[i].trim()));
}
// Form the success message.
messageBox.setTitle("The following chains have been successfully deleted:");
messageBox.setMessages(selectionList);
Messager.sendMessage(request, messageBox, MessageSeverity.SUCCESS);
response.sendRedirect(request.getContextPath() + "/ChainList");
}
} else {
// Form the error message.
messageBox.setTitle(
"Not enough previlegues to perform the operation. Please contact the administrator.");
Messager.sendMessage(request, messageBox, MessageSeverity.ERROR);
response.sendRedirect(request.getContextPath() + "/ChainList");
}
}
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// Read the selected ids.
String[] selection = request.getParameterValues("selected_id");
if (selection == null || selection.length == 0) {
// No items have been selected for deletion.
// Form an error message.
MessageBox messageBox = new MessageBox();
messageBox.setTitle("Please select chains you want to delete.");
Messager.sendMessage(request, messageBox, MessageSeverity.WARNING);
response.sendRedirect(request.getContextPath() + "/ChainList");
} else {
List<String> selectionList = chainIdsToListOfTitles(selection);
String itemName = "chain";
// Check whether the name of the items should be plural.
if (selectionList.size() % 10 != 1) {
itemName += "s";
}
String selectionIds = Utils.arrayToString(selection);
// Pass the list of selected ids to the view to be displayed.
request.setAttribute("selectionList", selectionList);
// Pass the string of ids separated by comma to the view to be
// passed further to the doPost() method via a hidden input.
request.setAttribute("selectionIds", selectionIds);
// Set other attributes.
request.setAttribute("htmlTitle", "SnippetHub | Chain Delete");
request.setAttribute("itemName", itemName);
request.setAttribute("controllerList", "ChainList");
request.setAttribute("controllerDelete", "ChainDelete");
response.setHeader("Charset", "UTF-8");
RequestDispatcher dispatcher =
request.getRequestDispatcher("WEB-INF/template/page-delete.jsp");
dispatcher.forward(request, response);
}
}