Merge branch 'master' of git://git.assembla.com/fpdb-mme
This commit is contained in:
Worros
commit
57f05ba2fb
484
pyfpdb/DatabaseManager.py
Normal file
484
pyfpdb/DatabaseManager.py
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@ -0,0 +1,484 @@
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import os
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import pygtk
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pygtk.require('2.0')
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import gtk
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#*******************************************************************************************************
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class DatabaseManager(object):
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DatabaseTypes = {}
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def __init__(self, defaultDatabaseType=None):
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self._defaultDatabaseType = defaultDatabaseType
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def set_default_database_type(self, databaseType):
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self._defaultDatabaseType = defaultDatabaseType
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def get_default_database_type(self):
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return self._defaultDatabaseType
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class DatabaseTypeMeta(type):
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def __new__(klass, name, bases, kws):
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newKlass = type.__new__(klass, name, bases, kws)
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if newKlass.Type is not None:
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if newKlass.Type in DatabaseManager.DatabaseTypes:
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raise ValueError('data base type already registered for: %s' % newKlass.Type)
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DatabaseManager.DatabaseTypes[newKlass.Type] = newKlass
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return newKlass
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class DatabaseTypeBase(object):
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__metaclass__ = DatabaseTypeMeta
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Type = None
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class DatabaseTypePostgres(DatabaseTypeBase):
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Type = 'postgres'
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def __init__(self, host='localhost', port=5432, user='postgres', password='', database='fpdb', name=''):
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self.host = host
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self.port = port
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self.user = user
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self.password = password
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self.database = database
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self.name = name
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class DatabaseTypeMysql(DatabaseTypeBase):
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Type = 'mysql'
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def __init__(self, host='localhost', port=3306, user='root', password='', database='fpdb', name=''):
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self.host = host
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self.port = port
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self.user = user
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self.password = password
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self.database = database
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self.name = name
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class DatabaseTypeSqLite(DatabaseTypeBase):
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Type = 'sqlite'
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def __init__(self, host='', file='', name=''):
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self.file = file
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self.name = name
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#***************************************************************************************************************************
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class MyFileChooserButton(gtk.HBox):
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#NOTE: for some weird reason it is impossible to let the user choose a non exiting filename with gtk.FileChooserButton, so impl our own on the fly
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def __init__(self):
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gtk.HBox.__init__(self)
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self.set_homogeneous(False)
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self.entry = gtk.Entry()
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self.button = gtk.Button('...')
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self.button.connect('clicked', self.on_button_clicked)
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# layout widgets
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self.pack_start(self.entry, True, True)
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self.pack_start(self.button, False, False)
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def get_filename(self):
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return self.entry.get_text()
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def set_filename(self, name):
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self.entry.set_text(name)
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def on_button_clicked(self, button):
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dlg = gtk.FileChooserDialog(
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title='Choose an exiting database file or type in name of a new one',
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parent=None,
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action=gtk.FILE_CHOOSER_ACTION_SAVE,
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buttons=(
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gtk.STOCK_CANCEL, gtk.RESPONSE_REJECT,
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gtk.STOCK_OK, gtk.RESPONSE_OK,
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),
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backend=None
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)
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dlg.connect('confirm-overwrite', self.on_dialog_confirm_overwrite)
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dlg.set_default_response(gtk.RESPONSE_OK)
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dlg.set_do_overwrite_confirmation(True)
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if dlg.run() == gtk.RESPONSE_OK:
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self.set_filename(dlg.get_filename())
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dlg.destroy()
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#TODO: when the user selects a sqLite database file we got three possible actions
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# 1. user types in a new filename. easy one, create the file
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# 2. user selectes a file with the intention to overwrite it
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# 3. user selects a file with the intention to plug an existing database file in
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#IDEA: impl open_existing as plug in, never overwrite, cos we can not guess
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#PROBLEMS: how to validate an existing file is a database?
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def on_dialog_confirm_overwrite(self, dlg):
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print dlg.get_filename()
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gtk.FILE_CHOOSER_CONFIRMATION_CONFIRM
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#The file chooser will present its stock dialog to confirm overwriting an existing file.
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gtk.FILE_CHOOSER_CONFIRMATION_ACCEPT_FILENAME
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#The file chooser will terminate and accept the user's choice of a file name.
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gtk.FILE_CHOOSER_CONFIRMATION_SELECT_AGAIN
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#
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class WidgetDatabaseProperties(gtk.VBox):
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ModeEdit = 0x1
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ModeAdd = 0x2
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ModeNew = 0x4
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class FieldWidget(object):
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def __init__(self, text='', attrDatabase='', widget=None, attrGet=None, attrSet=None, defaultValue=None, canEdit=False, tooltip=''):
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"""
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@param canEdit: True if the user can edit the attr in edit mode, False otherwise
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"""
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self._label = gtk.Label(text)
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self._attrDatabase = attrDatabase
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self._widget = widget
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self._defaultValue = defaultValue
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self._attrGetter=None,
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self._attrGet = attrGet
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self._attrSet = attrSet
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self._canEdit = canEdit
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self._label.set_tooltip_text(tooltip)
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self._widget.set_tooltip_text(tooltip)
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def widget(self):
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return self._widget
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def label(self):
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return self._label
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def is_sensitive(self, database):
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return hasattr(database, self._attrDatabase)
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def can_edit(self):
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return self._canEdit
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def set_sensitive(self, flag):
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self._label.set_sensitive(flag)
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self._widget.set_sensitive(flag)
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def value_from_database(self, database):
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getattr(self._widget, self._attrSet)( getattr(database, self._attrDatabase) )
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def value_to_database(self, database):
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setattr(database, self._attrDatabase, getattr(self._widget, self._attrGet)() )
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def reset_value(self):
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getattr(self._widget, self._attrSet)(self._defaultValue)
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def __init__(self, databaseManager, database=None, flags=ModeEdit):
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gtk.VBox.__init__(self)
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self.flags = flags
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self.fieldWidgets = ( #fieldName--> fieldHandler
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self.FieldWidget(
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text='Name:',
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attrDatabase='name',
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widget=gtk.Entry(),
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defaultValue='',
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attrGet='get_text',
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attrSet='set_text',
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canEdit=True,
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tooltip=''
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),
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self.FieldWidget(
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text='File:',
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attrDatabase='file',
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widget=MyFileChooserButton(),
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defaultValue='',
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attrGet='get_filename',
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attrSet='set_filename',
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canEdit=False,
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tooltip=''
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),
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self.FieldWidget(
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text='Host:',
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attrDatabase='host',
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widget=gtk.Entry(),
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defaultValue='',
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attrGet='get_text',
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attrSet='set_text',
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canEdit=False,
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tooltip=''
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),
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self.FieldWidget(
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text='Port:',
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attrDatabase='port',
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widget=gtk.SpinButton(adjustment=gtk.Adjustment(value=0, lower=0, upper=999999, step_incr=1, page_incr=10) ),
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defaultValue=0,
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attrGet='get_value',
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attrSet='set_value',
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canEdit=False,
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tooltip=''
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),
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self.FieldWidget(
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text='User:',
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attrDatabase='user',
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widget=gtk.Entry(),
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defaultValue='',
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attrGet='get_text',
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attrSet='set_text',
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canEdit=False,
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tooltip=''
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),
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self.FieldWidget(
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text='Pwd:',
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attrDatabase='password',
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widget=gtk.Entry(),
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defaultValue='',
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attrGet='get_text',
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attrSet='set_text',
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canEdit=False,
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tooltip=''
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),
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self.FieldWidget(
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text='Db:',
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attrDatabase='database',
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widget=gtk.Entry(),
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defaultValue='',
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attrGet='get_text',
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attrSet='set_text',
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canEdit=False,
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tooltip=''
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),
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)
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# setup database type combo
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self.comboType = gtk.ComboBox()
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listStore= gtk.ListStore(str, str)
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self.comboType.set_model(listStore)
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cell = gtk.CellRendererText()
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self.comboType.pack_start(cell, True)
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self.comboType.add_attribute(cell, 'text', 0)
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# fill out combo with database type. we store (displayName, databaseType) in our model for later lookup
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for dbType, dbDisplayName in sorted([(klass.Type, klass.Type) for klass in databaseManager.DatabaseTypes.values()]):
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listStore.append( (dbDisplayName, dbType) )
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self.comboType.connect('changed', self.on_combo_type_changed)
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# init and layout field widgets
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self.pack_start(self.comboType, False, False, 2)
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table = gtk.Table(rows=len(self.fieldWidgets) +1, columns=2, homogeneous=False)
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self.pack_start(table, False, False, 2)
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for i,fieldWidget in enumerate(self.fieldWidgets):
|
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|
table.attach(fieldWidget.label(), 0, 1, i, i+1, xoptions=gtk.FILL)
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table.attach(fieldWidget.widget(), 1, 2, i, i+1)
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# init widget
|
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# if a database has been passed user is not allowed to change database type
|
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|
if database is None:
|
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self.comboType.set_button_sensitivity(gtk.SENSITIVITY_ON)
|
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|
else:
|
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self.comboType.set_button_sensitivity(gtk.SENSITIVITY_OFF)
|
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|
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|
# set current database
|
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self.databaseManager = databaseManager
|
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self.database= None
|
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if database is None:
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databaseType = self.databaseManager.get_default_database_type()
|
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|
if databaseType is not None:
|
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|
database = databaseType()
|
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|
if database is not None:
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||||||
|
self.set_database(database)
|
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|
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||||||
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def on_combo_type_changed(self, combo):
|
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|
i = self.comboType.get_active()
|
||||||
|
if i > -1:
|
||||||
|
# change database if necessary
|
||||||
|
currentDatabaseType = self.comboType.get_model()[i][1]
|
||||||
|
if currentDatabaseType != self.database.Type:
|
||||||
|
newDatabase = self.databaseManager.DatabaseTypes[currentDatabaseType]()
|
||||||
|
self.set_database(newDatabase)
|
||||||
|
|
||||||
|
def set_database(self, database):
|
||||||
|
self.database = database
|
||||||
|
|
||||||
|
# adjust database type combo if necessary
|
||||||
|
i = self.comboType.get_active()
|
||||||
|
if i == -1:
|
||||||
|
currentDatabaseType = None
|
||||||
|
else:
|
||||||
|
currentDatabaseType = self.comboType.get_model()[i][1]
|
||||||
|
if currentDatabaseType != self.database.Type:
|
||||||
|
for i, row in enumerate(self.comboType.get_model()):
|
||||||
|
if row[1] == self.database.Type:
|
||||||
|
self.comboType.set_active(i)
|
||||||
|
break
|
||||||
|
else:
|
||||||
|
raise ValueError('unknown database type')
|
||||||
|
|
||||||
|
# adjust field widgets to database
|
||||||
|
for fieldWidget in self.fieldWidgets:
|
||||||
|
isSensitive = fieldWidget.is_sensitive(self.database)
|
||||||
|
if isSensitive:
|
||||||
|
fieldWidget.value_from_database(self.database)
|
||||||
|
else:
|
||||||
|
fieldWidget.reset_value()
|
||||||
|
if self.flags & self.ModeEdit:
|
||||||
|
isSensitive = isSensitive and fieldWidget.can_edit()
|
||||||
|
fieldWidget.set_sensitive(isSensitive)
|
||||||
|
|
||||||
|
def get_database(self):
|
||||||
|
for fieldWidget in self.fieldWidgets:
|
||||||
|
if fieldWidget.is_sensitive(self.database):
|
||||||
|
fieldWidget.value_to_database(self.database)
|
||||||
|
return self.database
|
||||||
|
|
||||||
|
|
||||||
|
class DialogDatabaseProperties(gtk.Dialog):
|
||||||
|
def __init__(self, databaseManager, database=None,parent=None, flags=WidgetDatabaseProperties.ModeEdit):
|
||||||
|
if flags & WidgetDatabaseProperties.ModeEdit:
|
||||||
|
title = '[Edit database] - database properties'
|
||||||
|
elif flags & WidgetDatabaseProperties.ModeAdd:
|
||||||
|
title = '[Add database] - database properties'
|
||||||
|
elif flags & WidgetDatabaseProperties.ModeNew:
|
||||||
|
title = '[New database] - database properties'
|
||||||
|
else:
|
||||||
|
title = 'database properties'
|
||||||
|
|
||||||
|
gtk.Dialog.__init__(self,
|
||||||
|
title=title,
|
||||||
|
parent=parent,
|
||||||
|
flags=gtk.DIALOG_MODAL | gtk.DIALOG_DESTROY_WITH_PARENT,
|
||||||
|
buttons=(
|
||||||
|
gtk.STOCK_CANCEL, gtk.RESPONSE_REJECT,
|
||||||
|
gtk.STOCK_OK, gtk.RESPONSE_ACCEPT,
|
||||||
|
)
|
||||||
|
)
|
||||||
|
self.connect('response', self.on_dialog_response)
|
||||||
|
|
||||||
|
# setup widget
|
||||||
|
self.flags = flags
|
||||||
|
self.widgetDatabaseProperties = WidgetDatabaseProperties(databaseManager,database=database, flags=self.flags)
|
||||||
|
self.vbox.pack_start(self.widgetDatabaseProperties, True, True)
|
||||||
|
self.widgetDatabaseProperties.show_all()
|
||||||
|
|
||||||
|
def get_database(self):
|
||||||
|
return self.widgetDatabaseProperties.get_database()
|
||||||
|
|
||||||
|
def on_dialog_response(self, dlg, responseId):
|
||||||
|
if responseId == gtk.RESPONSE_REJECT:
|
||||||
|
pass
|
||||||
|
elif responseId == gtk.RESPONSE_ACCEPT:
|
||||||
|
pass
|
||||||
|
|
||||||
|
|
||||||
|
#TODO: just boilerplate code
|
||||||
|
class DialogDatabase(gtk.Dialog):
|
||||||
|
def __init__(self, databaseManager, parent=None):
|
||||||
|
gtk.Dialog.__init__(self,
|
||||||
|
title="My dialog",
|
||||||
|
parent=parent,
|
||||||
|
flags=gtk.DIALOG_MODAL | gtk.DIALOG_DESTROY_WITH_PARENT,
|
||||||
|
buttons=(
|
||||||
|
gtk.STOCK_CANCEL, gtk.RESPONSE_REJECT,
|
||||||
|
gtk.STOCK_OK, gtk.RESPONSE_ACCEPT,
|
||||||
|
))
|
||||||
|
#self.set_size_request(260, 250)
|
||||||
|
|
||||||
|
self.databaseManager = databaseManager
|
||||||
|
|
||||||
|
#TODO: dono how to make word wrap work as expected
|
||||||
|
self.labelInfo = gtk.Label('database management')
|
||||||
|
self.labelInfo.set_line_wrap(True)
|
||||||
|
self.labelInfo.set_selectable(True)
|
||||||
|
self.labelInfo.set_single_line_mode(False)
|
||||||
|
self.labelInfo.set_alignment(0, 0)
|
||||||
|
|
||||||
|
# database management buttons
|
||||||
|
|
||||||
|
#TODO: bit messy the distinction New/Add/Edit. we'd have to pass three flags to DialogDatabaseProperties
|
||||||
|
# to handle this. maybe drop Edit (is just a Remove + Add), to keep things simple
|
||||||
|
self.buttonDatabaseNew = gtk.Button("New..")
|
||||||
|
self.buttonDatabaseNew.set_tooltip_text('creates a new database')
|
||||||
|
self.buttonDatabaseNew.connect('clicked', self.on_button_database_new_clicked)
|
||||||
|
self.buttonDatabaseAdd = gtk.Button("Add..")
|
||||||
|
self.buttonDatabaseAdd.set_tooltip_text('adds an existing database')
|
||||||
|
self.buttonDatabaseAdd.connect('clicked', self.on_button_database_add_clicked)
|
||||||
|
self.buttonDatabaseEdit = gtk.Button("Edit..")
|
||||||
|
self.buttonDatabaseEdit.set_tooltip_text('edit database settings')
|
||||||
|
self.buttonDatabaseEdit.connect('clicked', self.on_button_database_edit_clicked)
|
||||||
|
self.buttonDatabaseEdit.set_sensitive(False)
|
||||||
|
self.buttonDatabaseRemove = gtk.Button("Remove")
|
||||||
|
self.buttonDatabaseRemove.set_tooltip_text('removes the database from the list')
|
||||||
|
self.buttonDatabaseRemove.set_sensitive(False)
|
||||||
|
|
||||||
|
#TODO: i dont think we should do any real database management here. maybe drop it
|
||||||
|
self.buttonDatabaseDelete = gtk.Button("Delete")
|
||||||
|
self.buttonDatabaseDelete.set_tooltip_text('removes the database from the list and deletes it')
|
||||||
|
self.buttonDatabaseDelete.set_sensitive(False)
|
||||||
|
|
||||||
|
# database tree
|
||||||
|
self.treeDatabases = gtk.TreeView()
|
||||||
|
store = gtk.ListStore(str, str, str)
|
||||||
|
self.treeDatabases.set_model(store)
|
||||||
|
columns = ('Name', 'Status', 'Type')
|
||||||
|
for i, column in enumerate(columns):
|
||||||
|
col = gtk.TreeViewColumn(column, gtk.CellRendererText(), text=i)
|
||||||
|
self.treeDatabases.append_column(col)
|
||||||
|
self.treeDatabases.get_selection().connect('changed', self.on_tree_databases_selection_changed)
|
||||||
|
|
||||||
|
# layout widgets
|
||||||
|
self.vbox.pack_start(self.labelInfo, False, False, 2)
|
||||||
|
self.vbox.pack_start(gtk.HSeparator(), False, False, 2)
|
||||||
|
|
||||||
|
hbox = gtk.HBox()
|
||||||
|
self.vbox.add(hbox)
|
||||||
|
hbox.set_homogeneous(False)
|
||||||
|
vbox = gtk.VBox()
|
||||||
|
hbox.pack_start(vbox, False, False, 2)
|
||||||
|
vbox.pack_start(self.buttonDatabaseNew, False, False, 2)
|
||||||
|
vbox.pack_start(self.buttonDatabaseAdd, False, False, 2)
|
||||||
|
vbox.pack_start(self.buttonDatabaseEdit, False, False, 2)
|
||||||
|
vbox.pack_start(self.buttonDatabaseRemove, False, False, 2)
|
||||||
|
vbox.pack_start(self.buttonDatabaseDelete, False, False, 2)
|
||||||
|
box = gtk.VBox()
|
||||||
|
vbox.pack_start(box, True, True, 0)
|
||||||
|
|
||||||
|
hbox.pack_start(gtk.VSeparator(), False, False, 2)
|
||||||
|
hbox.pack_end(self.treeDatabases, True, True, 2)
|
||||||
|
|
||||||
|
self.show_all()
|
||||||
|
|
||||||
|
|
||||||
|
#TODO: for some reason i have to click OK/Cancel twice to close the dialog
|
||||||
|
def on_button_database_new_clicked(self, button):
|
||||||
|
dlg = DialogDatabaseProperties(self.databaseManager, parent=self, flags=WidgetDatabaseProperties.ModeNew)
|
||||||
|
if dlg.run() == gtk.RESPONSE_REJECT:
|
||||||
|
pass
|
||||||
|
if dlg.run() == gtk.RESPONSE_ACCEPT:
|
||||||
|
database = dlg.get_database()
|
||||||
|
self.treeDatabases.get_model().append( (database.name, 'foo', database.Type) )
|
||||||
|
dlg.destroy()
|
||||||
|
|
||||||
|
def on_button_database_add_clicked(self, button):
|
||||||
|
dlg = DialogDatabaseProperties(self.databaseManager, parent=self, flags=WidgetDatabaseProperties.ModeAdd)
|
||||||
|
if dlg.run() == gtk.RESPONSE_REJECT:
|
||||||
|
pass
|
||||||
|
if dlg.run() == gtk.RESPONSE_ACCEPT:
|
||||||
|
database = dlg.get_database()
|
||||||
|
self.treeDatabases.get_model().append( (database.name, 'foo', database.Type) )
|
||||||
|
dlg.destroy()
|
||||||
|
|
||||||
|
def on_button_database_edit_clicked(self, button):
|
||||||
|
dlg = DialogDatabaseProperties(self.databaseManager, parent=self, flags=WidgetDatabaseProperties.ModeEdit)
|
||||||
|
if dlg.run() == gtk.RESPONSE_REJECT:
|
||||||
|
pass
|
||||||
|
if dlg.run() == gtk.RESPONSE_ACCEPT:
|
||||||
|
database = dlg.get_database()
|
||||||
|
selection = self.treeDatabases.get_selection()
|
||||||
|
if selection is not None:
|
||||||
|
model, iter = selection.get_selected()
|
||||||
|
model.set_value(iter, 0, database.name)
|
||||||
|
dlg.destroy()
|
||||||
|
|
||||||
|
def on_tree_databases_selection_changed(self, treeSelection):
|
||||||
|
hasSelection = bool(treeSelection.count_selected_rows())
|
||||||
|
|
||||||
|
# enable/disable selection dependend widgets
|
||||||
|
self.buttonDatabaseEdit.set_sensitive(hasSelection)
|
||||||
|
self.buttonDatabaseRemove.set_sensitive(hasSelection)
|
||||||
|
self.buttonDatabaseDelete.set_sensitive(hasSelection)
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
#**************************************************************************************************
|
||||||
|
if __name__ == '__main__':
|
||||||
|
#d = DialogDatabaseProperties(
|
||||||
|
# DatabaseManager(defaultDatabaseType=DatabaseTypeSqLite),
|
||||||
|
#database=DatabaseTypePostgres(),
|
||||||
|
# database=None,
|
||||||
|
# )
|
||||||
|
d = DialogDatabase(DatabaseManager(defaultDatabaseType=DatabaseTypeSqLite))
|
||||||
|
d.connect("destroy", gtk.main_quit)
|
||||||
|
d.run()
|
||||||
|
#gtk.main()
|
||||||
|
|
||||||
|
|
||||||
Loading…
Reference in New Issue
Block a user