class TableController(object): def __init__(self,tabHost,objectType,objectName,model): self.view=TableView(tabHost) self.model=model self.name=objectName self.type=objectType self._mapdata() self.wireUp() def _mapdata(self): assert self.model.isDBLoaded() self.datamodel=QSqlTableModel(self.view,self.model.db) self.datamodel.setTable(self.name) self.refresh() def wireUp(self): self.datamodel.setEditStrategy(QSqlTableModel.OnManualSubmit) self.view.ui.tableView.setModel(self.datamodel) self.view.ui.tableView.show() if self.type==self.model.ModelArea.TABLES: ##make widget read-write self.view.ui.tableView.setEditTriggers(QAbstractItemView.DoubleClicked | QAbstractItemView.SelectedClicked) self.datamodel.setEditStrategy(QSqlTableModel.OnRowChange) #TODO: track edits for safe saving def refresh(self): self.datamodel.select()
class IntervenantUI(TableUI):
"""Classe chargée de l'interface de gestion des intervenants"""
def setupModel(self):
u"""Définit et configure le modèle sous-jacent à la table"""
self._modele = QSqlTableModel(self)
self._modele.setTable("intervenant")
self._modele.setHeaderData(1, Qt.Horizontal, "Nom")
self._modele.setHeaderData(2, Qt.Horizontal, u"Téléphone")
self._modele.setHeaderData(3, Qt.Horizontal, "Email")
self._modele.setEditStrategy(QSqlTableModel.OnFieldChange)
self._modele.select()
self._ui.tv.setModel(self._modele)
def msgValidationNouveau(self):
u"""Message d'erreur quand on veut créer deux items de suite"""
return u"Valider l'intervenant avant d'en recréer un nouveau"
def titreErrSuppression(self):
return u"Cliquer sur l'intervenant à supprimer"
def msgErrSuppression(self):
return u"""Veuiller cliquer sur un intervenant avant de cliquer sur \
supprimer"""
def msgSuppression(self, index):
return u"Êtes-vous sûr de vouloir supprimer l'intervenant " + index.sibling(
index.row(), 1).data() + " ? "
def preSupprVerification(self, index):
u"""Vérification à effectuer avant d'autoriser à supprimer un item
Renvoit False si la suppression est interdite
"""
sql = """
SELECT COUNT(*)
FROM absence
WHERE id_intervenant=""" + str(index.sibling(index.row(), 0).data())
req = QSqlQuery()
if req.exec_(sql):
req.next()
nbAbsences = req.record().value(0)
if nbAbsences != 0:
pl = ""
if nbAbsences != 1:
pl = "s"
QMessageBox.critical(
self, "Impossible de suppprimer",
u"L'intervenant a encore " + str(nbAbsences) +
u" absence" + pl + u" enregistrée" + pl + "<br />" +
u"Il faut les supprimer avant")
# TODO trouver un moyen de setter l'onglet de l'application
# self._ui.tabWidget.setCurrentIndex(1)
return False
# TODO gérer le else, au moins logger quelque chose
return True
class IntervenantUI(TableUI):
"""Classe chargée de l'interface de gestion des intervenants"""
def setupModel(self):
u"""Définit et configure le modèle sous-jacent à la table"""
self._modele = QSqlTableModel(self)
self._modele.setTable("intervenant")
self._modele.setHeaderData(1, Qt.Horizontal, "Nom")
self._modele.setHeaderData(2, Qt.Horizontal, u"Téléphone")
self._modele.setHeaderData(3, Qt.Horizontal, "Email")
self._modele.setEditStrategy(QSqlTableModel.OnFieldChange)
self._modele.select()
self._ui.tv.setModel(self._modele)
def msgValidationNouveau(self):
u"""Message d'erreur quand on veut créer deux items de suite"""
return u"Valider l'intervenant avant d'en recréer un nouveau"
def titreErrSuppression(self):
return u"Cliquer sur l'intervenant à supprimer"
def msgErrSuppression(self):
return u"""Veuiller cliquer sur un intervenant avant de cliquer sur \
supprimer"""
def msgSuppression(self, index):
return u"Êtes-vous sûr de vouloir supprimer l'intervenant " + index.sibling(index.row(), 1).data() + " ? "
def preSupprVerification(self, index):
u"""Vérification à effectuer avant d'autoriser à supprimer un item
Renvoit False si la suppression est interdite
"""
sql = """
SELECT COUNT(*)
FROM absence
WHERE id_intervenant=""" + str(index.sibling(index.row(), 0).data())
req = QSqlQuery()
if req.exec_(sql):
req.next()
nbAbsences = req.record().value(0)
if nbAbsences != 0:
pl = ""
if nbAbsences != 1:
pl = "s"
QMessageBox.critical(self, "Impossible de suppprimer",
u"L'intervenant a encore " + str(nbAbsences) +
u" absence" + pl + u" enregistrée" + pl + "<br />" +
u"Il faut les supprimer avant")
# TODO trouver un moyen de setter l'onglet de l'application
# self._ui.tabWidget.setCurrentIndex(1)
return False
# TODO gérer le else, au moins logger quelque chose
return True
def InitTable(self):
"""Funzione che accede al database ed imposta il data model"""
db = QSqlDatabase.addDatabase("QSQLITE")
db.setDatabaseName(self.myWidget.txtPercorso.text())
db.open()
model = QSqlTableModel()
model.setTable("contatti")
model.setEditStrategy(QSqlTableModel.OnManualSubmit)
model.select()
model.setHeaderData(0, QtCore.Qt.Horizontal, "Nome")
model.setHeaderData(1, QtCore.Qt.Horizontal, "Cognome")
model.setHeaderData(2, QtCore.Qt.Horizontal, "Telefono")
self.tableModel = model
self.myWidget.lstRubrica.setModel(model)
def InitTable(self):
"""Funzione che accede al database ed imposta il data model"""
db = QSqlDatabase.addDatabase("QSQLITE")
db.setDatabaseName(self.myWidget.txtPercorso.text())
db.open()
model = QSqlTableModel()
model.setTable("contatti")
model.setEditStrategy(QSqlTableModel.OnManualSubmit)
model.select()
model.setHeaderData(0, QtCore.Qt.Horizontal, "Nome")
model.setHeaderData(1, QtCore.Qt.Horizontal, "Cognome")
model.setHeaderData(2, QtCore.Qt.Horizontal, "Telefono")
self.tableModel = model
self.myWidget.lstRubrica.setModel(model)
class BookEditForm(QScrollArea, Ui_BookForm):
""" Interface for book edit """
column = {
'id':0, 'barcode':1, 'title':2, 'author':3, 's_author':4, 'publisher':5, 'year':6, 'price':7,
'description':8, 'stock':9, 'image':10, 'availability':11 }
IMG_SIZE = (150, 150)
def __init__(self, record_id, parent=None):
super(BookEditForm, self).__init__(parent)
self.setupUi(self)
# had to subclass this spinbox to support return grabbing
self.edYear = ReturnKeySpinBox(self)
self.edYearHolder.addWidget(self.edYear)
# configuring id's for radio group
self.radioAvailability.setId(self.rdSell,0)
self.radioAvailability.setId(self.rdRent,1)
self.radioAvailability.setId(self.rdInactive,2)
# overlaying a clean button over the image (couldn't do it in designer)
self.btnCleanImage = QPushButton()
self.btnCleanImage.setIcon(QIcon(":icons/clean.png"))
self.btnCleanImage.setFixedWidth(35)
self.btnCleanImage.clicked.connect(self.clear_image)
self.btnCleanImage.setVisible(False)
clean_img_layout = QVBoxLayout(self.edImage)
clean_img_layout.addWidget(self.btnCleanImage)
clean_img_layout.setAlignment(Qt.AlignTop | Qt.AlignLeft)
clean_img_layout.setContentsMargins(2,2,0,0)
self._access = statics.access_level
# for currency formatting
self._locale = QLocale()
self._record_id = record_id
# had to hardcode these, wouldn't work otherwise:
self.contentsLayout.setAlignment(self.groupBox, QtCore.Qt.AlignTop)
self.contentsLayout.setAlignment(self.groupBox_2, QtCore.Qt.AlignTop)
self.log = logging.getLogger('BookEditForm')
self._subject_list = []
self._removed_subjects = []
self._added_subjects = []
self.setup_model()
self.fill_form()
self.setup_fields()
self._old_data = self.extract_input(text_only=True)
# flag to indicate whether there were changes to the fields
self._dirty = False
# user did input an image
self._image_set = False
# image changed during edit
self._image_changed = False
def is_dirty(self):
return self._dirty
def setup_fields(self):
""" setting up validators and stuff """
# validators
# forcing uppercasing on these fields
self.edTitle.setValidator(UppercaseValidator())
self.edAuthor.setValidator(UppercaseValidator())
self.edSAuthor.setValidator(UppercaseValidator())
self.edPublisher.setValidator(UppercaseValidator())
self.edPrice.setValidator(CurrencyValidator(self.edPrice))
self.edBarcode.setValidator(NumericValidator())
self.edYear.setMinimum(1900)
self.edYear.setMaximum(date.today().year)
self.edYear.setValue(date.today().year)
# fixing tab order
self.setTabOrder(self.edPublisher, self.edYear)
self.setTabOrder(self.edYear, self.edPrice)
# connecting return key to tab
lineEditList = self.findChildren(QLineEdit)
for lineEdit in lineEditList:
# had some problem with C++ originated objects
if lineEdit.objectName() not in ['qt_spinbox_lineedit', 'edSubject']:
lineEdit.returnPressed.connect(lineEdit.focusNextChild)
# detect changes on line edits
lineEdit.textChanged.connect(self.check_changes)
# different behaviour for these
self.edBarcode.textChanged.connect(self.check_barcode)
self.edSubject.returnPressed.connect(self.on_btnAddSubject_clicked)
# completers
config_completer(self.edSubject, self._subject_model, "name")
config_completer(self.edAuthor, self._author_model, "name")
config_completer(self.edSAuthor, self._s_author_model, "name")
config_completer(self.edPublisher, self._publisher_model, "name")
# making image clickable
clickable(self.edImage).connect(self.handle_image)
def fill_form(self):
# retrieving book info
self.edBarcode.setText(self._record.value("barcode"))
self.edTitle.setText(self._record.value("title"))
self.edYear.setValue(self._record.value("year"))
self.edDescription.setPlainText(self._record.value("description"))
self.radioAvailability.button(self._record.value("availability")).setChecked(True)
# retrieving image
ba = QByteArray(self._record.value("image"))
if ba:
self._image_set = True
img = qbytearray_to_qimage(ba)
self.set_image(img, clean_visible=True)
# currency
# TODO: ARRUMAR
self.edPrice.setText(self._locale.toString(self._record.value("price"), 'f', 2).replace('.',''))
# qcompleter fields
self.edAuthor.setText(self._get_name_from_id("author", self._record.value("author_id")))
self.edSAuthor.setText(self._get_name_from_id("s_author", self._record.value("s_author_id")))
self.edPublisher.setText(self._get_name_from_id("publisher", self._record.value("publisher_id")))
# retrieving subjects
for subj_record in self._subj_records:
self.add_subject([subj_record.value("id"),subj_record.value("name")])
# clearing changes
self._added_subjects[:] = []
self.refresh_tableSubjects()
def clear_image(self):
img = QImage(":icons/no_image.png")
self.set_image(img, clean_visible=False)
if self._image_set:
self._image_set = False
self._image_changed = True
def handle_image(self):
image_path = QFileDialog.getOpenFileName(self, "Escolha uma imagem", os.getenv("HOME"), "Imagens (*.png, *.jpg *.bmp)")[0]
if os.path.exists(image_path):
self.set_image(QImage(image_path), clean_visible=True)
self._image_set = True
self._image_changed = True
def set_image(self, img, clean_visible=False):
pix = QPixmap.fromImage(img)
pix = pix.scaled(self.IMG_SIZE[0], self.IMG_SIZE[1], Qt.KeepAspectRatio)
self.edImage.setPixmap(pix)
self.edImage.setScaledContents(True)
self.btnCleanImage.setVisible(clean_visible)
def check_changes(self, txt):
# getting sender info
sender = self.sender().objectName().split('ed')[1].lower()
if sender != 'subject' and self._old_data[sender] != txt:
self._dirty = True
def check_barcode(self, txt):
if len(txt) == self.edBarcode.maxLength():
self.edBarcode.focusNextChild()
def extract_input(self, text_only=False):
data = {}
data['barcode'] = self.edBarcode.text()
data['title'] = self.edTitle.text()
# completer fields
for c_field, line_edit in [("author", self.edAuthor), ("s_author", self.edSAuthor), ("publisher", self.edPublisher)]:
if not text_only:
data[c_field] = self._get_cfield_value(c_field, line_edit.text())
else:
data[c_field] = line_edit.text()
data['year'] = self.edYear.value()
data['price'] = self._locale.toDouble(self.edPrice.text())[0]
data['description'] = self.edDescription.toPlainText()
if not text_only and self._image_changed and self._image_set:
data['image'] = qpixmap_to_qbytearray(self.edImage.pixmap())
data['availability'] = self.radioAvailability.checkedId()
return data
def setup_model(self):
db = Db_Instance("edit_book").get_instance()
if not db.open():
self.log.error(db.lastError().text())
message = unicode("Erro de conexão\n\n""Banco de dados indisponível".decode('utf-8'))
QMessageBox.critical(self, unicode("Seareiros - Edição de Livro".decode('utf-8')), message)
else:
# book
self._model = QSqlRelationalTableModel(self, db=db)
self._model.setTable("book")
self._model.setFilter("id = " + str(self._record_id))
# self._model.setRelation(self.column["author"], QSqlRelation("author", "id", "name"))
# self._model.setRelation(self.column["s_author"], QSqlRelation("s_author", "id", "name"))
# self._model.setRelation(self.column["publisher"], QSqlRelation("publisher", "id", "name"))
self._model.select()
self._record = self._model.record(0)
# models for setting up qcompleters:
# book_in_subject
self._book_in_subj_model = QSqlTableModel(self, db=db)
self._book_in_subj_model.setTable("book_in_subject")
# subject
self._subject_model = QSqlTableModel(self, db=db)
self._subject_model.setTable("subject")
self._subject_model.select()
# author
self._author_model = QSqlTableModel(self, db=db)
self._author_model.setTable("author")
self._author_model.select()
# s_author
self._s_author_model = QSqlTableModel(self, db=db)
self._s_author_model.setTable("s_author")
self._s_author_model.select()
# publisher
self._publisher_model = QSqlTableModel(self, db=db)
self._publisher_model.setTable("publisher")
self._publisher_model.select()
# retrieving current subjects, should probably place this elsewhere but it's related to models
self._subject_records = []
sql_statement = """SELECT id, name FROM subject s, book_in_subject b_s
WHERE s.id = b_s.subject_id AND b_s.book_id = %s
""" % str(self._record_id)
read_only_subject_model = QSqlQueryModel()
read_only_subject_model.setQuery(sql_statement, db)
# checking query validity
if not read_only_subject_model.lastError().isValid():
self._subj_records = iterate_model(read_only_subject_model)
def update_data(self):
data = self.extract_input()
# checking fields that aren't inserted yet
for val, model in [('author', self._author_model), ('s_author', self._s_author_model),
('publisher', self._publisher_model)]:
if isinstance(data[val], unicode):
# needs to be inserted
model.insertRow(0)
model.setData(model.index(0,1), data[val])
data[val] = submit_and_get_id(self, model, self.log)
if not data[val]:
# won't proceed if this fails
return False
for key,val in data.items():
self._model.setData(self._model.index(0, self.column[key]), val)
if 'image' not in data and self._image_changed:
# user cleared the image
ok = self._model.setData(self._model.index(0, self.column['image']), None)
print ok
# try to commit changes
if not self._model.submitAll():
self.log.error(self._model.lastError().text())
message = unicode("Erro de transação\n\n""Não foi possível salvar no banco de dados".decode('utf-8'))
QMessageBox.critical(self, "Seareiros - Edição de Livro", message)
return False
else:
# updating subjects
error = False
# added subjects
for subj in self._added_subjects:
# the list has the format [id, text] for existing subjects or [None, text] otherwise
if not subj[0]:
# need to insert the subject before associating it with the book
self._subject_model.insertRow(0)
self._subject_model.setData(self._subject_model.index(0,1), subj[1])
subj[0] = submit_and_get_id(self, self._subject_model, self.log)
if not subj[0]:
error = True
break
# have a valid record id for the subject to be associated
self._book_in_subj_model.insertRow(0)
self._book_in_subj_model.setData(self._book_in_subj_model.index(0,0), self._record_id)
self._book_in_subj_model.setData(self._book_in_subj_model.index(0,1), subj[0])
ok = self._book_in_subj_model.submitAll()
if not ok:
error = True
self.log.error(self._book_in_subj_model.setLastError().text())
break
# removed subjects
for removed_id in self._removed_subjects:
self._book_in_subj_model.setFilter("book_id = %s AND subject_id = %s" % (str(self._record_id),str(removed_id)))
self._book_in_subj_model.select()
self._book_in_subj_model.removeRow(0)
if self._book_in_subj_model.lastError().isValid():
error = True
self.log.error(self._book_in_subj_model.lastError().text())
break
if not error:
message = unicode("Sucesso!\n\n""O livro foi atualizado com êxito no banco de dados".decode('utf-8'))
QMessageBox.information(self, unicode("Seareiros - Edição de Livro".decode('utf-8')), message)
else:
message = unicode("Erro\n\n""Associado alterado, "
"porém ocorreu um problema ao salvar suas atividades".decode('utf-8'))
QMessageBox.warning(self, unicode("Seareiros - Edição de Livro".decode('utf-8')), message)
# if I don't set this flag here it'll trigger a warning for altering data on the form
self._dirty = False
return True
def _get_id_from_name(self, table, name):
db = Db_Instance(table + "_fetch_" + name + "_id").get_instance()
if not db.open():
return None
else:
query = QSqlQuery(db)
query.prepare("SELECT id FROM %s WHERE name = :name" % table)
query.bindValue(":name", name)
query.exec_()
if query.next():
return query.record().value("id")
else:
return None
def _get_name_from_id(self, table, id):
db = Db_Instance(table + "_fetch_" + str(id) + "_name").get_instance()
if not db.open():
return None
else:
query = QSqlQuery(db)
query.prepare("SELECT name FROM %s WHERE id = :id" % table)
query.bindValue(":name", id)
query.exec_()
if query.next():
return query.record().value("name")
else:
return None
@QtCore.Slot()
def on_btnAddSubject_clicked(self):
txt = self.edSubject.text()
if txt != '':
id = self._get_id_from_name('subject', self.edSubject.text())
if id:
# known register
data = [id, txt]
else:
# new data
data = [None, txt]
not_a_duplicate = self.add_subject(data)
if not_a_duplicate:
self.refresh_tableSubjects()
self.edSubject.clear()
self.edSubject.setFocus()
@QtCore.Slot()
def on_btnCleanSubjects_clicked(self):
self.clear_table()
self.edSubject.setFocus()
def clear_table(self):
# can't directly change activity_list here
itens = [i for i in self._subject_list]
for item in itens:
self.remove_subject(item)
self._added_subjects[:] = []
def add_subject(self, data):
""" adds a subject to the list except for duplicates """
if data in self._subject_list:
return False
else:
if self.is_in_del_queue(data[0]):
self._removed_subjects.remove(data[0])
else:
self._added_subjects.append(data)
self._subject_list.append(data)
# sorts by name
self._subject_list.sort(key=operator.itemgetter(1))
return True
def refresh_tableSubjects(self):
if len(self._subject_list) > 0:
self.tableSubjects.setColumnCount(len(self._subject_list[0])+1)
col_labels = ["", "Nome", ""]
self.tableSubjects.setHorizontalHeaderLabels(col_labels)
self.tableSubjects.setColumnHidden(0, True)
else:
self.tableSubjects.setColumnCount(0)
self.tableSubjects.setRowCount(len(self._subject_list))
for i, row in enumerate(self._subject_list):
for j, col in enumerate(row):
item = QTableWidgetItem(col)
self.tableSubjects.setItem(i, j, item)
# icon to remove rows individually
remove_icon = QIcon(":icons/conn_failed.png")
remove_btn = QPushButton(remove_icon, "")
remove_btn.clicked.connect(partial(self.remove_subject, subject=row))
self.tableSubjects.setCellWidget(i, len(row), remove_btn)
self.tableSubjects.resizeColumnsToContents()
self.tableSubjects.horizontalHeader().setResizeMode(1, QHeaderView.Stretch)
def is_in_del_queue(self, id):
return id in self._removed_subjects
def is_in_add_queue(self, data):
return data in self._added_subjects
def remove_subject(self, subject):
# remove a row based on its value
self._subject_list.remove(subject)
if self.is_in_add_queue(subject):
# unqueue previously added activity
self._added_subjects.remove(subject)
else:
id = subject[0]
if id:
self._removed_subjects.append(id)
self.refresh_tableSubjects()
def _get_cfield_value(self, c_field, text):
if text == '':
return None
id = self._get_id_from_name(c_field, text)
if id:
return id
else:
return text
class BookAddForm(QScrollArea, Ui_BookForm):
""" Interface for book input """
column = {
"barcode": 1,
"title": 2,
"author": 3,
"s_author": 4,
"publisher": 5,
"year": 6,
"price": 7,
"description": 8,
"stock": 9,
"image": 10,
"availability": 11,
}
IMG_SIZE = (150, 150)
def __init__(self, parent=None):
super(BookAddForm, self).__init__(parent)
self.setupUi(self)
# had to subclass this spinbox to support return grabbing
self.edYear = ReturnKeySpinBox(self)
self.edYearHolder.addWidget(self.edYear)
# configuring id's for radio group
self.radioAvailability.setId(self.rdSell, 0)
self.radioAvailability.setId(self.rdRent, 1)
self.radioAvailability.setId(self.rdInactive, 2)
self._access = statics.access_level
# for currency formatting
self._locale = QLocale()
# had to hardcode these, wouldn't work otherwise:
self.contentsLayout.setAlignment(self.groupBox, QtCore.Qt.AlignTop)
self.contentsLayout.setAlignment(self.groupBox_2, QtCore.Qt.AlignTop)
self.log = logging.getLogger("BookForm")
self.setup_model()
self.setup_fields()
self._subject_list = []
# flag to indicate whether there were changes to the fields
self._dirty = False
# for use in selection docks, indicates a saved record
self._book_id = None
# user did input an image
self._image_set = False
# overlaying a clean button over the image (couldn't do it in designer)
self.btnCleanImage = QPushButton()
self.btnCleanImage.setIcon(QIcon(":icons/clean.png"))
self.btnCleanImage.setFixedWidth(35)
self.btnCleanImage.clicked.connect(self.clear_image)
self.btnCleanImage.setVisible(False)
clean_img_layout = QVBoxLayout(self.edImage)
clean_img_layout.addWidget(self.btnCleanImage)
clean_img_layout.setAlignment(Qt.AlignTop | Qt.AlignLeft)
clean_img_layout.setContentsMargins(2, 2, 0, 0)
def is_dirty(self):
return self._dirty
def setup_model(self):
db = Db_Instance("form_book").get_instance()
if not db.open():
self.log.error(db.lastError().text())
message = unicode("Erro de conexão\n\n" "Banco de dados indisponível".decode("utf-8"))
QMessageBox.critical(self, "Seareiros - Cadastro de Livro", message)
else:
# book
self._model = QSqlTableModel(self, db=db)
self._model.setTable("book")
# subject
self._subject_model = QSqlTableModel(self, db=db)
self._subject_model.setTable("subject")
self._subject_model.select()
# author
self._author_model = QSqlTableModel(self, db=db)
self._author_model.setTable("author")
self._author_model.select()
# sauthor
self._s_author_model = QSqlTableModel(self, db=db)
self._s_author_model.setTable("s_author")
self._s_author_model.select()
# publisher
self._publisher_model = QSqlTableModel(self, db=db)
self._publisher_model.setTable("publisher")
self._publisher_model.select()
# book subjects
self._book_in_subj_model = QSqlTableModel(self, db=db)
self._book_in_subj_model.setTable("book_in_subject")
def setup_fields(self):
""" setting up validators and stuff """
# validators
# forcing uppercasing on these fields
self.edTitle.setValidator(UppercaseValidator())
self.edAuthor.setValidator(UppercaseValidator())
self.edSAuthor.setValidator(UppercaseValidator())
self.edPublisher.setValidator(UppercaseValidator())
self.edPrice.setValidator(CurrencyValidator(self.edPrice))
self.edBarcode.setValidator(NumericValidator())
self.edYear.setMinimum(1900)
self.edYear.setMaximum(date.today().year)
self.edYear.setValue(date.today().year)
# fixing tab order
self.setTabOrder(self.edPublisher, self.edYear)
self.setTabOrder(self.edYear, self.edPrice)
# connecting return key to tab
lineEditList = self.findChildren(QLineEdit)
for lineEdit in lineEditList:
# had some problem with C++ originated objects
if lineEdit.objectName() not in ["qt_spinbox_lineedit", "edSubject"]:
lineEdit.returnPressed.connect(lineEdit.focusNextChild)
# detect changes on line edits
lineEdit.textChanged.connect(self.check_changes)
# different behaviour for these
self.edBarcode.textChanged.connect(self.check_barcode)
self.edSubject.returnPressed.connect(self.on_btnAddSubject_clicked)
# completers
config_completer(self.edSubject, self._subject_model, "name")
config_completer(self.edAuthor, self._author_model, "name")
config_completer(self.edSAuthor, self._s_author_model, "name")
config_completer(self.edPublisher, self._publisher_model, "name")
# making image clickable
clickable(self.edImage).connect(self.handle_image)
def clear_image(self):
img = QImage(":icons/no_image.png")
self.set_image(img)
self._image_set = False
self.btnCleanImage.setVisible(False)
def handle_image(self):
image_path = QFileDialog.getOpenFileName(
self, "Escolha uma imagem", os.getenv("HOME"), "Imagens (*.png, *.jpg *.bmp)"
)[0]
if os.path.exists(image_path):
self.set_image(QImage(image_path))
self._image_set = True
self.btnCleanImage.setVisible(True)
def set_image(self, img):
pix = QPixmap.fromImage(img)
pix = pix.scaled(self.IMG_SIZE[0], self.IMG_SIZE[1], Qt.KeepAspectRatio)
self.edImage.setPixmap(pix)
self.edImage.setScaledContents(True)
def check_changes(self, txt):
if txt != "":
self._dirty = True
def check_barcode(self, txt):
if len(txt) == self.edBarcode.maxLength():
self.edBarcode.focusNextChild()
def _get_id_from_name(self, table, name):
db = Db_Instance(table + "_fetch_" + name + "_id").get_instance()
if not db.open():
return None
else:
query = QSqlQuery(db)
query.prepare("SELECT id FROM %s WHERE name = :name" % table)
query.bindValue(":name", name)
query.exec_()
if query.next():
return query.record().value("id")
else:
return None
def submit_data(self):
data = self.extract_input()
# checking fields that aren't inserted yet
for val, model in [
("author", self._author_model),
("s_author", self._s_author_model),
("publisher", self._publisher_model),
]:
if isinstance(data[val], unicode):
# needs to be inserted
model.insertRow(0)
model.setData(model.index(0, 1), data[val])
data[val] = submit_and_get_id(self, model, self.log)
if not data[val]:
# won't proceed if this fails
return False
# filling a book row
self._model.insertRow(0)
for key, val in data.items():
self._model.setData(self._model.index(0, self.column[key]), val)
book_id = submit_and_get_id(self, self._model, self.log)
if book_id:
# for use in selection docks
self.setBookId(book_id)
# book sucessfully added, now associating related subjects
subjects, new_subjects = self.extract_subjects_input()
for subj in new_subjects:
self._subject_model.insertRow(0)
self._subject_model.setData(self._subject_model.index(0, 1), subj)
id = submit_and_get_id(self, self._subject_model, self.log)
if not id:
# issue saving new subject
return False
subjects.append(int(id))
# associating book and it's subjects
error = False
for subj_id in subjects:
self._book_in_subj_model.insertRow(0)
self._book_in_subj_model.setData(self._book_in_subj_model.index(0, 0), book_id)
self._book_in_subj_model.setData(self._book_in_subj_model.index(0, 1), subj_id)
ok = self._book_in_subj_model.submitAll()
if not ok:
error = True
break
if error:
self.log.error(self._book_in_subj_model.lastError.text())
message = unicode(
"Erro\n\n"
"Livro cadastrado, porém ocorreu um problema ao"
" salvar os temas a que está associado".decode("utf-8")
)
QMessageBox.warning(self, "Seareiros - Cadastro de Livro", message)
return False
else:
message = unicode("Sucesso!\n\n" "O livro foi salvo com êxito no banco de dados".decode("utf-8"))
QMessageBox.information(self, "Seareiros - Cadastro de Livro", message)
return True
# failed to insert a row
return False
def setBookId(self, id):
self._book_id = id
def get_added_record(self):
db = Db_Instance("added_book_record").get_instance()
if db.open() and self._book_id:
query = QSqlQuery(db)
query.prepare("SELECT * FROM book WHERE id = :id")
query.bindValue(":id", self._book_id)
query.exec_()
if query.next():
return query.record()
else:
return None
else:
return None
def clear(self):
self._dirty = False
lineEditList = self.findChildren(QLineEdit)
for lineEdit in lineEditList:
lineEdit.clear()
self.clear_table()
self.clear_image()
self.edBarcode.setFocus()
@QtCore.Slot()
def on_btnAddSubject_clicked(self):
txt = self.edSubject.text()
if txt != "":
id = self._get_id_from_name("subject", self.edSubject.text())
if id:
# known register
data = [id, txt]
else:
# new data
data = [None, txt]
not_a_duplicate = self.add_subject(data)
if not_a_duplicate:
self.refresh_tableSubjects()
self.edSubject.clear()
self.edSubject.setFocus()
@QtCore.Slot()
def on_btnCleanSubjects_clicked(self):
self.clear_table()
self.edSubject.setFocus()
def clear_table(self):
self._subject_list = []
self.tableSubjects.clear()
self.refresh_tableSubjects()
def add_subject(self, data):
""" adds a subject to the list except for duplicates """
if data in self._subject_list:
return False
else:
self._subject_list.append(data)
# sorts by name
self._subject_list.sort(key=operator.itemgetter(1))
return True
def refresh_tableSubjects(self):
if len(self._subject_list) > 0:
self.tableSubjects.setColumnCount(len(self._subject_list[0]) + 1)
col_labels = ["", "Nome", ""]
self.tableSubjects.setHorizontalHeaderLabels(col_labels)
self.tableSubjects.setColumnHidden(0, True)
else:
self.tableSubjects.setColumnCount(0)
self.tableSubjects.setRowCount(len(self._subject_list))
for i, row in enumerate(self._subject_list):
for j, col in enumerate(row):
item = QTableWidgetItem(col)
self.tableSubjects.setItem(i, j, item)
# icon to remove rows individually
remove_icon = QIcon(":icons/conn_failed.png")
remove_btn = QPushButton(remove_icon, "")
remove_btn.clicked.connect(partial(self.remove_subject, subject=row))
self.tableSubjects.setCellWidget(i, len(row), remove_btn)
self.tableSubjects.resizeColumnsToContents()
self.tableSubjects.horizontalHeader().setResizeMode(1, QHeaderView.Stretch)
def remove_subject(self, subject):
# remove a row based on its value
self._subject_list.remove(subject)
self.refresh_tableSubjects()
def extract_input(self):
data = {}
data["barcode"] = self.edBarcode.text()
data["title"] = self.edTitle.text()
# completer fields
for c_field, line_edit in [
("author", self.edAuthor),
("s_author", self.edSAuthor),
("publisher", self.edPublisher),
]:
data[c_field] = self._get_cfield_value(c_field, line_edit.text())
data["year"] = self.edYear.value()
data["price"] = self._locale.toDouble(self.edPrice.text())[0]
data["description"] = self.edDescription.toPlainText()
if self._image_set:
data["image"] = qpixmap_to_qbytearray(self.edImage.pixmap())
data["availability"] = self.radioAvailability.checkedId()
return data
def _get_cfield_value(self, c_field, text):
if text == "":
return None
id = self._get_id_from_name(c_field, text)
if id:
return id
else:
return text
def extract_subjects_input(self):
# grab id of selected activities
subjects = []
new_subjects = []
for subj in self._subject_list:
if subj[0]:
# selected from previously added subjects
subjects.append(subj[0])
else:
# new subject
new_subjects.append(subj[1])
return (subjects, new_subjects)