1 files changed, 69 insertions, 0 deletions
diff --git a/addons/document_page/wizard/document_page_show_diff.py b/addons/document_page/wizard/document_page_show_diff.py
new file mode 100644
index 00000000000..fc5711ce733
--- /dev/null
+++ b/addons/document_page/wizard/document_page_show_diff.py
@@ -0,0 +1,69 @@
+# -*- coding: utf-8 -*-
+##############################################################################
+#
+#    OpenERP, Open Source Management Solution
+#    Copyright (C) 2004-2010 Tiny SPRL (<http://tiny.be>).
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as
+#    published by the Free Software Foundation, either version 3 of the
+#    License, or (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+##############################################################################
+
+from osv import fields, osv
+from tools.translate import _
+import base64
+
+class showdiff(osv.osv_memory):
+    """ Disp[ay Difference for History """
+
+    _name = 'wizard.document.page.history.show_diff'
+
+    def get_diff(self, cr, uid, context=None):
+
+        """ @param cr: the current row, from the database cursor,
+        @param uid: the current user’s ID for security checks,
+        """
+        if context is None:
+            context = {}
+        history = self.pool.get('document.page.history')
+        ids = context.get('active_ids', [])
+
+        diff = ""
+        if len(ids) == 2:
+            if ids[0] > ids[1]:
+                diff = base64.encodestring(history.getDiff(cr, uid, ids[1], ids[0]))
+            else:
+                diff = base64.encodestring(history.getDiff(cr, uid, ids[0], ids[1]))
+
+        elif len(ids) == 1:
+            old = history.browse(cr, uid, ids[0])
+            nids = history.search(cr, uid, [('document_id', '=', old.document_id.id)])
+            nids.sort()
+            diff = base64.encodestring(history.getDiff(cr, uid, ids[0], nids[-1]))
+        else:
+            raise osv.except_osv(_('Warning'), _('You need to select minimum 1 or maximum 2 history revision!'))
+
+
+        return diff
+
+    _columns = {
+        'file_path':fields.binary('Diff', readonly=True),
+    }
+
+    _defaults = {
+        'file_path': get_diff
+    }
+
+showdiff()
+
+# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4: