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# Copyright (c) 2001, 2003, 2004 by Intevation GmbH |
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# Authors: |
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# Martin Mueller <[email protected]> |
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# Bernhard Herzog <[email protected]> |
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# |
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# This program is free software under the GPL (>=v2) |
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# Read the file COPYING coming with Thuban for details. |
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|
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|
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"""Dialogs to manage database connections""" |
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|
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import sys, traceback |
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|
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import wx |
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|
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try: |
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import psycopg |
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except ImportError: |
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psycopg = None |
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|
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from Thuban import _ |
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from Thuban.UI.dialogs import NonModalDialog |
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from Thuban.Model.table import FIELDTYPE_INT |
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from Thuban.Model.postgisdb import ConnectionError, PostGISConnection |
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from Thuban.Model.messages import DBCONN_ADDED, DBCONN_REMOVED |
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from messages import SESSION_REPLACED |
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|
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|
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ID_DB_ADD = 9101 |
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ID_DB_REMOVE = 9102 |
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|
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ID_DBCHOOSE_RETRIEVE = 9201 |
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ID_DBCHOOSE_OK = 9202 |
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ID_DBCHOOSE_CANCEL = 9203 |
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ID_LB_DCLICK = 9204 |
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|
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|
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class ChooseDBTableDialog(wx.Dialog): |
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|
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def __init__(self, parent, session): |
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wx.Dialog.__init__(self, parent, -1, _("Choose layer from database"), |
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style = wx.DIALOG_MODAL|wx.CAPTION) |
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self.session = session |
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self.dbconns = self.session.DBConnections() |
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self.tables = [] |
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|
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# |
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# Build the dialog |
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# |
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|
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# Sizer for the entire dialog |
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top = wx.FlexGridSizer(2, 1, 0, 0) |
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|
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# Sizer for the main part with the list boxes |
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main_sizer = wx.BoxSizer(wx.HORIZONTAL) |
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top.Add(main_sizer, 1, wx.EXPAND, 0) |
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|
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# The list box with the connections |
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static_box = wx.StaticBoxSizer(wx.StaticBox(self, -1, _("Databases")), |
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wx.HORIZONTAL) |
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self.lb_connections = wx.ListBox(self, -1) |
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static_box.Add(self.lb_connections, 0, wx.EXPAND, 0) |
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main_sizer.Add(static_box, 1, wx.EXPAND, 0) |
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|
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for i in range(len(self.dbconns)): |
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self.lb_connections.Append(self.dbconns[i].BriefDescription()) |
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if self.lb_connections.GetCount() > 0: |
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self.lb_connections.SetSelection(0, True) |
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|
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# The button box between the connections list box and the table |
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# list box |
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buttons = wx.FlexGridSizer(3, 1, 0, 0) |
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buttons.Add( (20, 80), 0, wx.EXPAND, 0) |
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retrieve_button = wx.Button(self, ID_DBCHOOSE_RETRIEVE, _("Retrieve")) |
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self.Bind(wx.EVT_BUTTON, self.OnRetrieve, id=ID_DBCHOOSE_RETRIEVE) |
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buttons.Add(retrieve_button, 0, wx.ALL |
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|wx.ALIGN_CENTER_HORIZONTAL|wx.ALIGN_CENTER_VERTICAL, 4) |
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buttons.Add( (20, 80), 0, wx.EXPAND, 0) |
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main_sizer.Add(buttons, 0, wx.EXPAND, 0) |
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|
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# The list box with the tables |
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static_box = wx.StaticBoxSizer(wx.StaticBox(self, -1, _("Tables")), |
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wx.HORIZONTAL) |
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self.lb_tables = wx.ListBox(self, ID_LB_DCLICK) |
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self.Bind(wx.EVT_LISTBOX, self.OnTableSelect, id=ID_LB_DCLICK) |
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self.Bind(wx.EVT_LISTBOX_DCLICK, self.OnLBDClick, id=ID_LB_DCLICK) |
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static_box.Add(self.lb_tables, 0, wx.EXPAND, 0) |
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main_sizer.Add(static_box, 1, wx.EXPAND, 0) |
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|
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# id column and geometry column selection |
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box = wx.BoxSizer(wx.VERTICAL) |
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box.Add(wx.StaticText(self, -1, _("ID Column")), 0, |
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wx.ALL|wx.ALIGN_CENTER_VERTICAL, 4) |
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self.text_id_column = wx.ComboBox(self, -1, "") |
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box.Add(self.text_id_column, 0, |
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wx.ALL|wx.ALIGN_CENTER_VERTICAL|wx.EXPAND, 4) |
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|
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box.Add(wx.StaticText(self, -1, _("Geometry Column")), 0, |
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wx.ALL|wx.ALIGN_CENTER_VERTICAL, 4) |
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self.text_geo_column = wx.ComboBox(self, -1, "") |
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box.Add(self.text_geo_column, 0, |
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wx.ALL|wx.ALIGN_CENTER_VERTICAL|wx.EXPAND, 4) |
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main_sizer.Add(box, 1, wx.EXPAND, 0) |
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|
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# The standard button box at the bottom of the dialog |
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buttons = wx.FlexGridSizer(1, 2, 0, 0) |
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ok_button = wx.Button(self, ID_DBCHOOSE_OK, _("OK")) |
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self.Bind(wx.EVT_BUTTON, self.OnOK, id=ID_DBCHOOSE_OK) |
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buttons.Add(ok_button, 0, wx.ALL|wx.ALIGN_RIGHT, 4) |
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cancel_button = wx.Button(self, ID_DBCHOOSE_CANCEL, _("Cancel")) |
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self.Bind(wx.EVT_BUTTON, self.OnCancel, id=ID_DBCHOOSE_CANCEL) |
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buttons.Add(cancel_button, 0, wx.ALL, 4) |
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top.Add(buttons, 1, wx.ALL|wx.ALIGN_CENTER_HORIZONTAL, 4) |
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|
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# Autosizing |
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self.SetAutoLayout(1) |
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self.SetSizer(top) |
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top.Fit(self) |
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top.SetSizeHints(self) |
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self.Layout() |
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|
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|
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def GetTable(self): |
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i = self.lb_tables.GetSelection() |
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if i >= 0: |
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return (self.selected_conn, self.tables[i], |
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self.text_id_column.GetValue(), |
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self.text_geo_column.GetValue()) |
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return None |
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|
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def OnRetrieve(self, event): |
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i = self.lb_connections.GetSelection() |
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if i >= 0: |
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self.selected_conn = self.dbconns[i] |
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self.tables = self.selected_conn.GeometryTables() |
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self.lb_tables.Set(self.tables) |
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|
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def OnTableSelect(self, event): |
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i = self.lb_tables.GetSelection() |
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self.text_id_column.Clear() |
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self.text_geo_column.Clear() |
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if i >= 0: |
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for name, typ in self.selected_conn.table_columns(self.tables[i]): |
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if typ == "geometry": |
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self.text_geo_column.Append(name) |
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elif typ == FIELDTYPE_INT: |
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self.text_id_column.Append(name) |
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|
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def OnLBDClick(self, event): |
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if self.lb_tables.GetSelection() >= 0: |
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self.EndModal(wx.ID_OK) |
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self.Show(False) |
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|
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def OnOK(self, event): |
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self.EndModal(wx.ID_OK) |
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self.Show(False) |
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|
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def OnCancel(self, event): |
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self.EndModal(wx.ID_CANCEL) |
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self.Show(False) |
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|
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|
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class DBDialog(wx.Dialog): |
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|
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"""Dialog for the parameters of a database connection""" |
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|
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def __init__(self, parent, title, parameters, message = ""): |
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"""Initialize the dialog box. |
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|
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The parameters argument should be a dictionary containing known |
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connection parameters. |
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|
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The optional message parameter will be displayed at the top of |
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the dialog box and can be used to display error messages when |
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using the dialog to ask for correct parameters when the |
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connection can't be established. |
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""" |
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wx.Dialog.__init__(self, parent, -1, title) |
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|
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top = wx.BoxSizer(wx.VERTICAL) |
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|
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if message: |
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top.Add(wx.StaticText(self, -1, message), 0, |
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wx.ALL|wx.ALIGN_CENTER_VERTICAL, 4) |
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|
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box = wx.BoxSizer(wx.HORIZONTAL) |
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box.Add(wx.StaticText(self, -1, _("Hostname:")), 0, |
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wx.ALL|wx.ALIGN_CENTER_VERTICAL, 4) |
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self.text_host = wx.TextCtrl(self, -1, parameters.get("host", "")) |
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box.Add(self.text_host, 2, wx.ALL|wx.ALIGN_CENTER_VERTICAL|wx.EXPAND, 4) |
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box.Add(wx.StaticText(self, -1, _("Port:")), 0, |
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wx.ALL|wx.ALIGN_CENTER_VERTICAL, 4) |
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self.text_port = wx.TextCtrl(self, -1, parameters.get("port", "")) |
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box.Add(self.text_port, 1, wx.ALL|wx.ALIGN_CENTER_VERTICAL|wx.EXPAND, 4) |
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top.Add(box, 0, wx.EXPAND) |
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|
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box = wx.BoxSizer(wx.HORIZONTAL) |
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box.Add(wx.StaticText(self, -1, _("Database Name:")), 0, |
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wx.ALL|wx.ALIGN_CENTER_VERTICAL, 4) |
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self.text_dbname = wx.TextCtrl(self, -1, |
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parameters.get("dbname", "")) |
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box.Add(self.text_dbname, 1, wx.ALL|wx.ALIGN_CENTER_VERTICAL|wx.EXPAND, 4) |
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top.Add(box, 0, wx.EXPAND) |
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|
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box = wx.BoxSizer(wx.HORIZONTAL) |
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box.Add(wx.StaticText(self, -1, _("User:")), 0, |
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wx.ALL|wx.ALIGN_CENTER_VERTICAL, 4) |
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self.text_user = wx.TextCtrl(self, -1, |
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parameters.get("user", "")) |
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box.Add(self.text_user, 1, wx.ALL|wx.ALIGN_CENTER_VERTICAL|wx.EXPAND, 4) |
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box.Add(wx.StaticText(self, -1, _("Password:")), 0, |
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wx.ALL|wx.ALIGN_CENTER_VERTICAL, 4) |
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self.text_password = wx.TextCtrl(self, -1, |
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parameters.get("password", ""), |
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style = wx.TE_PASSWORD) |
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box.Add(self.text_password, 1, wx.ALL|wx.ALIGN_CENTER_VERTICAL|wx.EXPAND, |
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4) |
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top.Add(box, 0, wx.EXPAND) |
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|
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buttons = wx.BoxSizer(wx.HORIZONTAL) |
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button = wx.Button(self, wx.ID_OK, _("OK")) |
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buttons.Add(button, 0, wx.ALL, 4) |
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button = wx.Button(self, wx.ID_CANCEL, _("Cancel")) |
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buttons.Add(button, 0, wx.ALL, 4) |
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top.Add(buttons, 0, wx.ALIGN_RIGHT, 4) |
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|
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self.SetAutoLayout(1) |
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self.SetSizer(top) |
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top.Fit(self) |
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top.SetSizeHints(self) |
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|
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self.Bind(wx.EVT_BUTTON, self.OnOK, id=wx.ID_OK) |
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self.Bind(wx.EVT_BUTTON, self.OnCancel, id=wx.ID_CANCEL) |
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|
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def RunDialog(self): |
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self.ShowModal() |
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self.Destroy() |
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return self.result |
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|
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def end_dialog(self, result): |
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self.result = result |
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if result is not None: |
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self.EndModal(wx.ID_OK) |
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else: |
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self.EndModal(wx.ID_CANCEL) |
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self.Show(False) |
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|
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def OnOK(self, event): |
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result = {} |
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for name in ("host", "port", "dbname", "user", "password"): |
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result[name] = getattr(self, "text_" + name).GetValue() |
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self.end_dialog(result) |
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|
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def OnCancel(self, event): |
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self.end_dialog(None) |
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|
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|
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|
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class DBFrame(NonModalDialog): |
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|
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"""Databse connection management dialog""" |
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|
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def __init__(self, parent, name, session, *args, **kwds): |
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kwds["style"] = wx.ICONIZE|wx.CAPTION|wx.MINIMIZE |
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NonModalDialog.__init__(self, parent, name, "") |
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self.session = session |
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self.app = self.parent.application |
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|
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self.app.Subscribe(SESSION_REPLACED, self.session_replaced) |
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self.subscribe_session() |
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|
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self.DB_ListBox = wx.ListBox(self, -1, |
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style=wx.LB_SINGLE|wx.LB_HSCROLL|wx.LB_ALWAYS_SB) |
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self.DB_Add = wx.Button(self, ID_DB_ADD, _("Add")) |
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self.DB_Remove = wx.Button(self, ID_DB_REMOVE, _("Remove")) |
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self.DB_CLOSE = wx.Button(self, wx.ID_CLOSE, _("Close")) |
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self.__set_properties() |
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self.__do_layout() |
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self.Bind(wx.EVT_BUTTON, self.OnAdd, id=ID_DB_ADD) |
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self.Bind(wx.EVT_BUTTON, self.OnRemove, id=ID_DB_REMOVE) |
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self.Bind(wx.EVT_BUTTON, self.OnClose, id=wx.ID_CLOSE) |
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|
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self.conns_changed() |
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|
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def __set_properties(self): |
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self.SetTitle(_("Database Management")) |
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self.DB_ListBox.SetSize((200, 157)) |
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|
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def __do_layout(self): |
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top = wx.BoxSizer(wx.VERTICAL) |
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|
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box = wx.BoxSizer(wx.HORIZONTAL) |
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|
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box.Add(self.DB_ListBox, 1, wx.ALL|wx.EXPAND |
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|wx.ALIGN_CENTER_HORIZONTAL|wx.ALIGN_CENTER_VERTICAL, 4) |
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|
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buttons = wx.BoxSizer(wx.VERTICAL) |
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buttons.Add(self.DB_Add, 0, wx.ALL, 4) |
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buttons.Add(self.DB_Remove, 0, wx.ALL, 4) |
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|
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box.Add(buttons, 0, wx.EXPAND) |
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top.Add(box, 1, wx.EXPAND) |
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|
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buttons = wx.BoxSizer(wx.HORIZONTAL) |
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buttons.Add(self.DB_CLOSE, 1, wx.ALL|wx.ALIGN_RIGHT, 4) |
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top.Add(buttons, 0, wx.ALIGN_RIGHT) |
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|
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self.SetAutoLayout(1) |
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self.SetSizer(top) |
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top.Fit(self) |
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top.SetSizeHints(self) |
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|
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def subscribe_session(self): |
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"""Internal: Subscribe to some session messages""" |
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self.session.Subscribe(DBCONN_ADDED, self.conns_changed) |
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self.session.Subscribe(DBCONN_REMOVED, self.conns_changed) |
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|
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def unsubscribe_session(self): |
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"""Internal: Subscribe from messages subscribe in subscribe_session""" |
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self.session.Subscribe(DBCONN_ADDED, self.conns_changed) |
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self.session.Subscribe(DBCONN_REMOVED, self.conns_changed) |
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|
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def session_replaced(self, *args): |
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"""Internal: resubscribe the session messages |
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|
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This method is a subscriber for the application's |
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SESSION_REPLACED messages. |
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""" |
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self.unsubscribe_session() |
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self.session = self.app.Session() |
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self.subscribe_session() |
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self.conns_changed() |
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|
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def conns_changed(self, *args): |
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"""Internal: update the db connection list box |
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|
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Subscribed to the DBCONN_ADDED and DBCONN_REMOVED messages. |
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""" |
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self.DB_ListBox.Clear() |
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for conn in self.session.DBConnections(): |
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self.DB_ListBox.Append(conn.BriefDescription(), conn) |
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|
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def OnClose(self, event): |
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self.unsubscribe_session() |
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self.app.Unsubscribe(SESSION_REPLACED, self.session_replaced) |
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NonModalDialog.OnClose(self, event) |
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|
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def RunMessageBox(self, title, text, flags = wx.OK | wx.ICON_INFORMATION): |
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"""Run a modal message box with the given text, title and flags |
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and return the result""" |
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dlg = wxMessageDialog(self, text, title, flags) |
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dlg.CenterOnParent() |
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result = dlg.ShowModal() |
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dlg.Destroy() |
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return result |
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|
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def OnAdd(self, event): |
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message = "" |
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parameters = {} |
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while 1: |
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dialog = DBDialog(self, _("Add Database"), parameters, message) |
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parameters = dialog.RunDialog() |
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if parameters is not None: |
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for conn in self.session.DBConnections(): |
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if conn.MatchesParameters(parameters): |
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self.RunMessageBox(_("Add Database"), |
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_("Connection '%s' already exists") |
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% conn.BriefDescription()) |
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break |
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else: |
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try: |
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conn = PostGISConnection(**parameters) |
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except ConnectionError, val: |
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message = str(val) |
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else: |
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self.session.AddDBConnection(conn) |
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break |
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else: |
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break |
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|
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def OnRemove(self, event): |
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i = self.DB_ListBox.GetSelection() |
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if i >= 0: |
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conn = self.DB_ListBox.GetClientData(i) |
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if self.session.CanRemoveDBConnection(conn): |
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self.session.RemoveDBConnection(conn) |
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else: |
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self.RunMessageBox(_("Remove Database Connection"), |
| 389 |
_("The connection %s\nis still in use") |
| 390 |
% conn.BriefDescription()) |
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