[WIP] Commit before rebase on latest #109 for user and view updates

Migration of printer_tray to v11 and integration with base_report_to_printer

base_report_to_printer/models/printing_printer.py

@@ -7,8 +7,8 @@
 # Copyright (C) 2016 SYLEAM (<http://www.syleam.fr>)
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 
+import errno
 import logging
-
 import os
 from tempfile import mkstemp
 
@@ -17,6 +17,11 @@ from odoo import models, fields, api
 
 _logger = logging.getLogger(__name__)
 
+try:
+    import cups
+except ImportError:
+    _logger.debug('Cannot `import cups`.')
+
 
 class PrintingPrinter(models.Model):
     """
@@ -52,6 +57,55 @@ class PrintingPrinter(models.Model):
     model = fields.Char(readonly=True)
     location = fields.Char(readonly=True)
     uri = fields.Char(string='URI', readonly=True)
+    tray_ids = fields.One2many(comodel_name='printing.tray',
+                               inverse_name='printer_id',
+                               string='Paper Sources')
+
+    @api.multi
+    def _prepare_update_from_cups(self, cups_connection, cups_printer):
+        vals = super(PrintingPrinter, self)._prepare_update_from_cups(
+            cups_connection, cups_printer)
+
+        printer_uri = cups_printer['printer-uri-supported']
+        printer_system_name = printer_uri[printer_uri.rfind('/') + 1:]
+        ppd_info = cups_connection.getPPD3(printer_system_name)
+        ppd_path = ppd_info[2]
+        if not ppd_path:
+            return vals
+
+        ppd = cups.PPD(ppd_path)
+        option = ppd.findOption('InputSlot')
+        try:
+            os.unlink(ppd_path)
+        except OSError as err:
+            # ENOENT means No such file or directory
+            # The file has already been deleted, we can continue the update
+            if err.errno != errno.ENOENT:
+                raise
+        if not option:
+            return vals
+
+        vals['tray_ids'] = []
+        cups_trays = {
+            tray_option['choice']: tray_option['text']
+            for tray_option in option.choices
+        }
+
+        # Add new trays
+        vals['tray_ids'].extend([
+            (0, 0, {'name': text, 'system_name': choice})
+            for choice, text in cups_trays.items()
+            if choice not in self.tray_ids.mapped('system_name')
+        ])
+
+        # Remove deleted trays
+        vals['tray_ids'].extend([
+            (2, tray.id)
+            for tray in self.tray_ids.filtered(
+                lambda record: record.system_name not in cups_trays.keys())
+        ])
+
+        return vals
 
     @api.multi
     def _prepare_update_from_cups(self, cups_connection, cups_printer):
@@ -79,6 +133,25 @@ class PrintingPrinter(models.Model):
             options['raw'] = 'True'
         if copies > 1:
             options['copies'] = str(copies)
+        if report is not None:
+            printing_act_obj = self.env['printing.report.xml.action']
+            if report.printer_tray_id:
+                tray = report.printer_tray_id
+            else:
+                # Retrieve user default values
+                tray = self.env.user.printer_tray_id
+
+            # Retrieve report-user specific values
+            action = printing_act_obj.search([
+                ('report_id', '=', report.id),
+                ('user_id', '=', self.env.uid),
+                ('action', '!=', 'user_default'),
+            ], limit=1)
+            if action.printer_tray_id:
+                tray = action.printer_tray_id
+
+            if tray:
+                options['InputSlot'] = str(tray.system_name)
         return options
 
     @api.multi