class XP3(QDialog, object):
def __init__(self, hard_drive):
super(XP3, self).__init__(None)
self.hard_drive = hard_drive
self.filename_le = QLineEdit()
filename_label = QLabel(u'文件名')
filename_label.setBuddy(self.filename_le)
self.size_le = QLineEdit()
size_label = QLabel(u'大小 (块)')
size_label.setBuddy(self.size_le)
self.add_button = QPushButton(u'添加')
self.add_button.setSizePolicy(QSizePolicy.Preferred,
QSizePolicy.Preferred)
self.recycle_button = QPushButton(u'回收文件')
self.recycle_button.setSizePolicy(QSizePolicy.Preferred,
QSizePolicy.Preferred)
self.message_label = QLabel(u'实验三，我是信息条')
self.message_label.setAlignment(Qt.AlignVCenter | Qt.AlignHCenter)
ctrl_panel = QGridLayout()
ctrl_panel.addWidget(filename_label, 0, 0)
ctrl_panel.addWidget(self.filename_le, 0, 1)
ctrl_panel.addWidget(size_label, 1, 0)
ctrl_panel.addWidget(self.size_le, 1, 1)
ctrl_panel.addWidget(self.add_button, 0, 2, 2, 1)
ctrl_panel.addWidget(self.recycle_button, 0, 3, 2, 1)
ctrl_panel.addWidget(self.message_label, 2, 0, 1, 4)
self.alloc_table_model = AllocationTableModel(self)
self.alloc_table_view = QTreeView()
self.alloc_table_view.setModel(self.alloc_table_model)
self.alloc_table_view.setRootIsDecorated(False)
self.alloc_table_view.setItemsExpandable(False)
self.alloc_table_view.setMaximumWidth(250)
for i in [0, 1]:
self.alloc_table_view.setColumnWidth(i, 57)
self.file_table_model = FileTableModel(self)
self.file_table_view = QTreeView()
self.file_table_view.setModel(self.file_table_model)
self.file_table_view.setRootIsDecorated(False)
self.file_table_view.setItemsExpandable(False)
for i in range(1, 5):
self.file_table_view.setColumnWidth(i, 57)
main_layout = QGridLayout()
main_layout.addWidget(self.alloc_table_view, 0, 0)
main_layout.addWidget(self.file_table_view, 0, 1)
main_layout.addLayout(ctrl_panel, 1, 0, 1, 2)
self.setLayout(main_layout)
self.resize(630, 370)
self.connect(self.add_button,
SIGNAL('clicked()'),
self.alloc_file)
self.connect(self.recycle_button,
SIGNAL('clicked()'),
self.recycle_file)
def alloc_file(self):
filename = unicode(self.filename_le.text())
if not filename:
return
else:
self.filename_le.setText('')
size = int(self.size_le.text())
if not size:
return
else:
self.size_le.setText('')
self.file_table_model.beginInsertRows(QModelIndex(), 0, 0)
self.alloc_table_model.beginInsertColumns(QModelIndex(), 0, 0)
status, ext = self.hard_drive.allocate(filename, size)
self.alloc_table_model.endInsertRows()
self.file_table_model.endInsertRows()
# self.file_table_model.refresh()
msg = QString(u'分配<font color="%1"><b>%2</b></font>，%3。')
if not status:
msg = msg.arg(u'red').arg(u'失败')
if ext == -1:
msg = msg.arg(u'原因：文件分配表中已存在改文件名')
elif ext == 0:
msg = msg.arg(u'原因：不能在空闲区表中找到满足要求的区')
else:
msg = msg.arg(u'green')\
.arg(u'成功')\
.arg(u'空闲区号%s' % self.hard_drive.physical_to_logical(ext))
self.message_label.setText(msg)
def recycle_file(self):
selected_indices = self.file_table_view.selectedIndexes()
if selected_indices:
selected_filename = unicode(selected_indices[0].data().toPyObject())
else:
return
s = self.hard_drive._file_table[selected_filename]
self.alloc_table_model.beginInsertRows(QModelIndex(), 0, 0)
status = self.hard_drive.recycle(selected_filename)
self.alloc_table_model.endInsertRows()
msg = QString(u'回收<font color="%1"><b>%2</b></font>，%3。')
if status:
self.file_table_model.refresh()
self.alloc_table_model.refresh()
msg = msg.arg('green').arg(u'成功').arg(u'起始空闲块号%s' % s.start)
else:
msg = msg.arg('red').arg(u'失败').arg(u'原因未知')
self.message_label.setText(msg)
def __init__(self, hard_drive):
super(XP3, self).__init__(None)
self.hard_drive = hard_drive
self.filename_le = QLineEdit()
filename_label = QLabel(u'文件名')
filename_label.setBuddy(self.filename_le)
self.size_le = QLineEdit()
size_label = QLabel(u'大小 (块)')
size_label.setBuddy(self.size_le)
self.add_button = QPushButton(u'添加')
self.add_button.setSizePolicy(QSizePolicy.Preferred,
QSizePolicy.Preferred)
self.recycle_button = QPushButton(u'回收文件')
self.recycle_button.setSizePolicy(QSizePolicy.Preferred,
QSizePolicy.Preferred)
self.message_label = QLabel(u'实验三，我是信息条')
self.message_label.setAlignment(Qt.AlignVCenter | Qt.AlignHCenter)
ctrl_panel = QGridLayout()
ctrl_panel.addWidget(filename_label, 0, 0)
ctrl_panel.addWidget(self.filename_le, 0, 1)
ctrl_panel.addWidget(size_label, 1, 0)
ctrl_panel.addWidget(self.size_le, 1, 1)
ctrl_panel.addWidget(self.add_button, 0, 2, 2, 1)
ctrl_panel.addWidget(self.recycle_button, 0, 3, 2, 1)
ctrl_panel.addWidget(self.message_label, 2, 0, 1, 4)
self.alloc_table_model = AllocationTableModel(self)
self.alloc_table_view = QTreeView()
self.alloc_table_view.setModel(self.alloc_table_model)
self.alloc_table_view.setRootIsDecorated(False)
self.alloc_table_view.setItemsExpandable(False)
self.alloc_table_view.setMaximumWidth(250)
for i in [0, 1]:
self.alloc_table_view.setColumnWidth(i, 57)
self.file_table_model = FileTableModel(self)
self.file_table_view = QTreeView()
self.file_table_view.setModel(self.file_table_model)
self.file_table_view.setRootIsDecorated(False)
self.file_table_view.setItemsExpandable(False)
for i in range(1, 5):
self.file_table_view.setColumnWidth(i, 57)
main_layout = QGridLayout()
main_layout.addWidget(self.alloc_table_view, 0, 0)
main_layout.addWidget(self.file_table_view, 0, 1)
main_layout.addLayout(ctrl_panel, 1, 0, 1, 2)
self.setLayout(main_layout)
self.resize(630, 370)
self.connect(self.add_button,
SIGNAL('clicked()'),
self.alloc_file)
self.connect(self.recycle_button,
SIGNAL('clicked()'),
self.recycle_file)