Add two new listbox related method to get the first page and the last page of...

Add two new listbox related method to get the first page and the last page of a multiple-page listbox.
Auto-delete of trailing spaces.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@8679 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Form/SelectionTool.py

@@ -26,8 +26,8 @@
 #
 ##############################################################################
 
-"""\
-ERP portal_selection tool.
+"""
+  ERP5 portal_selection tool.
 """
 
 from OFS.Traversable import NotFound
@@ -504,6 +504,48 @@ class SelectionTool( UniqueObject, SimpleItem ):
 
 
     # ListBox related methods
+
+    security.declareProtected(ERP5Permissions.View, 'firstPage')
+    def firstPage(self, listbox_uid, uids=None, REQUEST=None):
+      """
+        Access the first page of a list
+      """
+      if uids is None: uids = []
+      request = REQUEST
+      #form_id = request.form_id
+      selection_name = request.list_selection_name
+      selection = self.getSelectionFor(selection_name, REQUEST)
+      params = selection.getParams()
+      params['list_start'] = 0
+      selection.edit(params=params)
+      self.uncheckAll(selection_name, listbox_uid)
+      return self.checkAll(selection_name, uids, REQUEST=REQUEST)
+
+    security.declareProtected(ERP5Permissions.View, 'lastPage')
+    def lastPage(self, listbox_uid, uids=None, REQUEST=None):
+      """
+        Access the last page of a list
+      """
+      if uids is None: uids = []
+      request = REQUEST
+      #form_id = request.form_id
+      selection_name = request.list_selection_name
+      selection = self.getSelectionFor(selection_name, REQUEST)
+      params = selection.getParams()
+      # XXX This will not work if the number of lines shown in the listbox is greater
+      #       than the BIG_INT constan. Such a case has low probability but is not
+      #       impossible. If you are in this case, send me a mail ! -- Kev
+      BIG_INT = 10000000
+      last_page_start = BIG_INT
+      total_lines = request.form.get('total_size', BIG_INT)
+      if total_lines != BIG_INT:
+        lines_per_page  = params.get('list_lines', 1)
+        last_page_start = int(total_lines) - (int(total_lines) % int(lines_per_page))
+      params['list_start'] = last_page_start
+      selection.edit(params=params)
+      self.uncheckAll(selection_name, listbox_uid)
+      return self.checkAll(selection_name, uids, REQUEST=REQUEST)
+
     security.declareProtected(ERP5Permissions.View, 'nextPage')
     def nextPage(self, listbox_uid, uids=None, REQUEST=None):
       """
@@ -518,8 +560,7 @@ class SelectionTool( UniqueObject, SimpleItem ):
       lines = params.get('list_lines',0)
       start = params.get('list_start', 0)
       params['list_start'] = int(start) + int(lines)
-      selection.edit(params= params)
-
+      selection.edit(params=params)
       self.uncheckAll(selection_name, listbox_uid)
       return self.checkAll(selection_name, uids, REQUEST=REQUEST)
 
@@ -537,8 +578,7 @@ class SelectionTool( UniqueObject, SimpleItem ):
       lines = params.get('list_lines',0)
       start = params.get('list_start', 0)
       params['list_start'] = max(int(start) - int(lines), 0)
-      selection.edit(params= selection.params)
-
+      selection.edit(params=selection.params)
       self.uncheckAll(selection_name, listbox_uid)
       return self.checkAll(selection_name, uids, REQUEST=REQUEST)
 
@@ -551,21 +591,19 @@ class SelectionTool( UniqueObject, SimpleItem ):
       request = REQUEST
       #form_id = request.form_id
       selection_name = request.list_selection_name
-
       selection = self.getSelectionFor(selection_name, REQUEST=REQUEST)
       if selection is not None:
         params = selection.getParams()
         lines = params.get('list_lines',0)
         start = request.form.get('list_start',0)
-
         params['list_start'] = start
         selection.edit(params= selection.params)
-
       self.uncheckAll(selection_name, listbox_uid)
       return self.checkAll(selection_name, uids, REQUEST=REQUEST, query_string=query_string)
 
 
     # PlanningBox related methods
+
     security.declareProtected(ERP5Permissions.View, 'setZoomLevel')
     def setZoomLevel(self, uids=None, REQUEST=None):
       """