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# Copyright (c) 2001, 2003 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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from wxPython.wx import * |
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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.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(wxDialog): |
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|
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def __init__(self, parent, session): |
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wxDialog.__init__(self, parent, -1, _("Choose layer from database"), |
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style = wxDIALOG_MODAL|wxCAPTION) |
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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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self.list_box_4 = wxListBox(self, -1) |
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for i in range(len(self.dbconns)): |
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self.list_box_4.Append(self.dbconns[i].BriefDescription()) |
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if self.list_box_4.GetCount() > 0: |
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self.list_box_4.SetSelection(0, True) |
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self.DB_CHOOSE_RETRIEVE = wxButton(self, ID_DBCHOOSE_RETRIEVE, |
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_("Retrieve")) |
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self.list_box_5 = wxListBox(self, ID_LB_DCLICK) |
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self.DB_CHOOSE_OK = wxButton(self, ID_DBCHOOSE_OK, _("OK")) |
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self.DB_CHOOSE_CANCEL = wxButton(self, ID_DBCHOOSE_CANCEL, _("Cancel")) |
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self.__do_layout() |
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|
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EVT_BUTTON(self, ID_DBCHOOSE_OK, self.OnOK) |
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EVT_BUTTON(self, ID_DBCHOOSE_CANCEL, self.OnCancel) |
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EVT_BUTTON(self, ID_DBCHOOSE_RETRIEVE, self.OnRetrieve) |
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EVT_LISTBOX_DCLICK(self, ID_LB_DCLICK, self.OnLBDClick) |
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|
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def __do_layout(self): |
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grid_sizer_1 = wxFlexGridSizer(2, 1, 0, 0) |
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grid_sizer_3 = wxFlexGridSizer(1, 2, 0, 0) |
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grid_sizer_2 = wxFlexGridSizer(1, 3, 0, 0) |
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sizer_4 = wxStaticBoxSizer(wxStaticBox(self, -1, _("Tables")), |
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wxHORIZONTAL) |
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grid_sizer_4 = wxFlexGridSizer(3, 1, 0, 0) |
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sizer_3 = wxStaticBoxSizer(wxStaticBox(self, -1, _("Databases")), |
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wxHORIZONTAL) |
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sizer_3.Add(self.list_box_4, 0, wxEXPAND, 0) |
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grid_sizer_2.Add(sizer_3, 1, wxEXPAND, 0) |
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grid_sizer_4.Add(20, 80, 0, wxEXPAND, 0) |
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grid_sizer_4.Add(self.DB_CHOOSE_RETRIEVE, 0, wxALL |
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|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 4) |
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grid_sizer_4.Add(20, 80, 0, wxEXPAND, 0) |
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grid_sizer_2.Add(grid_sizer_4, 1, wxEXPAND, 0) |
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sizer_4.Add(self.list_box_5, 0, wxEXPAND, 0) |
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grid_sizer_2.Add(sizer_4, 1, wxEXPAND, 0) |
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grid_sizer_1.Add(grid_sizer_2, 1, wxEXPAND, 0) |
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grid_sizer_3.Add(self.DB_CHOOSE_OK, 0, wxALL|wxALIGN_RIGHT, 4) |
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grid_sizer_3.Add(self.DB_CHOOSE_CANCEL, 0, wxALL, 4) |
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grid_sizer_1.Add(grid_sizer_3, 1, wxALL|wxALIGN_CENTER_HORIZONTAL, 4) |
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self.SetAutoLayout(1) |
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self.SetSizer(grid_sizer_1) |
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grid_sizer_1.Fit(self) |
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grid_sizer_1.SetSizeHints(self) |
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self.Layout() |
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|
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def GetTable(self): |
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i = self.list_box_5.GetSelection() |
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if i >= 0: |
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return self.selected_conn, self.tables[i] |
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return None |
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|
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def OnRetrieve(self, event): |
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i = self.list_box_4.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.list_box_5.Set(self.tables) |
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|
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def OnLBDClick(self, event): |
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if self.list_box_5.GetSelection() >= 0: |
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self.EndModal(wxID_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(wxID_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(wxID_CANCEL) |
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self.Show(False) |
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|
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|
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class DBDialog(wxDialog): |
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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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wxDialog.__init__(self, parent, -1, title) |
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|
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top = wxBoxSizer(wxVERTICAL) |
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|
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if message: |
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top.Add(wxStaticText(self, -1, message), 0, |
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wxALL|wxALIGN_CENTER_VERTICAL, 4) |
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|
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box = wxBoxSizer(wxHORIZONTAL) |
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box.Add(wxStaticText(self, -1, _("Hostname:")), 0, |
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wxALL|wxALIGN_CENTER_VERTICAL, 4) |
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self.text_host = wxTextCtrl(self, -1, parameters.get("host", "")) |
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box.Add(self.text_host, 2, wxALL|wxALIGN_CENTER_VERTICAL|wxEXPAND, 4) |
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box.Add(wxStaticText(self, -1, _("Port:")), 0, |
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wxALL|wxALIGN_CENTER_VERTICAL, 4) |
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self.text_port = wxTextCtrl(self, -1, parameters.get("port", "")) |
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box.Add(self.text_port, 1, wxALL|wxALIGN_CENTER_VERTICAL|wxEXPAND, 4) |
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top.Add(box, 0, wxEXPAND) |
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|
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box = wxBoxSizer(wxHORIZONTAL) |
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box.Add(wxStaticText(self, -1, _("Database Name:")), 0, |
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wxALL|wxALIGN_CENTER_VERTICAL, 4) |
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self.text_dbname = wxTextCtrl(self, -1, |
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parameters.get("dbname", "")) |
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box.Add(self.text_dbname, 1, wxALL|wxALIGN_CENTER_VERTICAL|wxEXPAND, 4) |
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top.Add(box, 0, wxEXPAND) |
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|
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box = wxBoxSizer(wxHORIZONTAL) |
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box.Add(wxStaticText(self, -1, _("User:")), 0, |
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wxALL|wxALIGN_CENTER_VERTICAL, 4) |
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self.text_user = wxTextCtrl(self, -1, |
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parameters.get("user", "")) |
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box.Add(self.text_user, 1, wxALL|wxALIGN_CENTER_VERTICAL|wxEXPAND, 4) |
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box.Add(wxStaticText(self, -1, _("Password:")), 0, |
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wxALL|wxALIGN_CENTER_VERTICAL, 4) |
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self.text_password = wxTextCtrl(self, -1, |
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parameters.get("password", ""), |
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style = wxTE_PASSWORD) |
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box.Add(self.text_password, 1, wxALL|wxALIGN_CENTER_VERTICAL|wxEXPAND, |
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4) |
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top.Add(box, 0, wxEXPAND) |
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|
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buttons = wxBoxSizer(wxHORIZONTAL) |
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button = wxButton(self, wxID_OK, _("OK")) |
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buttons.Add(button, 0, wxALL, 4) |
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button = wxButton(self, wxID_CANCEL, _("Cancel")) |
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buttons.Add(button, 0, wxALL, 4) |
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top.Add(buttons, 0, wxALIGN_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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EVT_BUTTON(self, wxID_OK, self.OnOK) |
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EVT_BUTTON(self, wxID_CANCEL, self.OnCancel) |
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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(wxID_OK) |
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else: |
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self.EndModal(wxID_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"] = wxICONIZE|wxCAPTION|wxMINIMIZE |
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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 = wxListBox(self, -1, |
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style=wxLB_SINGLE|wxLB_HSCROLL|wxLB_ALWAYS_SB) |
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self.DB_Add = wxButton(self, ID_DB_ADD, _("Add")) |
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self.DB_Remove = wxButton(self, ID_DB_REMOVE, _("Remove")) |
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self.DB_CLOSE = wxButton(self, wxID_CLOSE, _("Close")) |
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self.__set_properties() |
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self.__do_layout() |
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EVT_BUTTON(self, ID_DB_ADD, self.OnAdd) |
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EVT_BUTTON(self, ID_DB_REMOVE, self.OnRemove) |
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EVT_BUTTON(self, wxID_CLOSE, self.OnClose) |
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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 = wxBoxSizer(wxVERTICAL) |
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|
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box = wxBoxSizer(wxHORIZONTAL) |
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|
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box.Add(self.DB_ListBox, 1, wxALL|wxEXPAND |
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|wxALIGN_CENTER_HORIZONTAL|wxALIGN_CENTER_VERTICAL, 4) |
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|
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buttons = wxBoxSizer(wxVERTICAL) |
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buttons.Add(self.DB_Add, 0, wxALL, 4) |
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buttons.Add(self.DB_Remove, 0, wxALL, 4) |
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|
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box.Add(buttons, 0, wxEXPAND) |
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top.Add(box, 1, wxEXPAND) |
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|
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buttons = wxBoxSizer(wxHORIZONTAL) |
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buttons.Add(self.DB_CLOSE, 1, wxALL|wxALIGN_RIGHT, 4) |
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top.Add(buttons, 0, wxALIGN_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 = wxOK | wxICON_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"), |
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_("The connection %s\nis still in use") |
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% conn.BriefDescription()) |
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