+ self.setAnimated(True)
+ self.setItemsExpandable(True)
+ self.setRootIsDecorated(True)
+ self.setAlternatingRowColors(True)
+# self.setSelectionMode(self.MultiSelection)
+ self.setAttribute(Qt.WA_MacShowFocusRect, 0)
+ self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
+
+class SelectDelegate(QStyledItemDelegate):
+ pass
+
+class NodeNameDelegate(QStyledItemDelegate):
+ def __init__(self, parent):
+ QStyledItemDelegate.__init__(self)
+
+ def paint(self, painter, option, index):
+ model = index.model()
+ data = "%s" % index.data().toString()
+ select_index = model.index(index.row(), 2, index.parent())
+ select_data = select_index.data().toString()
+
+ if select_data not in ("true", "add", "remove"): # default view
+ QStyledItemDelegate.paint(self, painter, option, index)
+ return
+
+ fm = QFontMetrics(option.font)
+ rect = option.rect
+ rect.setWidth(fm.width(QString(data)) + 8)
+ rect.setHeight(rect.height() - 2)
+ rect.setX(rect.x() + 4)
+ x, y, h, w = rect.x(), rect.y(), rect.height(), rect.width()
+
+ path = QPainterPath()
+ path.addRoundedRect(x, y, w, h, 4, 4)
+
+ painter.save()
+ painter.setRenderHint(QPainter.Antialiasing)
+ painter.drawRoundedRect(rect, 4, 4)
+
+ if select_data == "true": # already in the slice
+ painter.fillPath(path, QColor.fromRgb(0, 250, 0))
+ painter.setPen(QColor.fromRgb(0, 0, 0))
+ painter.drawText(option.rect, 0, QString(data))
+
+ elif select_data == "add": # newly added to the slice
+ painter.fillPath(path, QColor.fromRgb(0, 250, 0))
+ painter.setPen(QColor.fromRgb(0, 0, 0))
+ painter.drawText(option.rect, 0, QString(data))
+ painter.drawRect(x + w + 10, y + 3, 10, 10)
+ painter.fillRect(x + w + 10, y + 3, 10, 10, QColor.fromRgb(0, 250, 0))
+
+ elif select_data == "remove": # removed from the slice
+ painter.fillPath(path, QColor.fromRgb(250, 0, 0))
+ painter.setPen(QColor.fromRgb(0, 0, 0))
+ painter.drawText(option.rect, 0, QString(data))
+ painter.drawRect(x + w + 10, y + 3, 10, 10)
+ painter.fillRect(x + w + 10, y + 3, 10, 10, QColor.fromRgb(250, 0, 0))
+
+ painter.restore()
+
+class TreeItem:
+ def __init__(self, data, parent=None):
+ self.parentItem = parent
+ self.itemData = data
+ self.childItems = []
+
+ def clear(self):
+ for child in self.childItems:
+ child.clear()
+ del child
+ del self.childItems
+ self.childItems = []
+
+ def appendChild(self, child):
+ self.childItems.append(child)
+
+ def child(self, row):
+ return self.childItems[row]
+
+ def childCount(self):
+ return len(self.childItems)
+
+ def childNumber(self):
+ if self.parentItem:
+ return self.parentItem.childItems.index(self)
+ return 0
+
+ def columnCount(self):
+ return len(self.itemData)
+
+ def data(self, column):
+ return self.itemData[column]
+
+ def insertChildren(self, position, count, columns):
+ if position < 0 or position > len(self.childItems):
+ return False
+
+ for row in range(count):
+ data = self.data(columns)
+ item = TreeItem(data, self)
+ self.childItems.insert(position, item)
+
+ return True
+
+ def insertColumns(self, position, columns):
+ if position < 0 or position > len(self.itemData):
+ return False
+
+ for column in range(columns):
+ self.itemData.insert(position, QVariant())
+
+ for child in self.childItems:
+ child.insertColumns(position, columns)
+
+ return True
+
+ def setData(self, column, value):
+ if column < 0 or column >= len(self.itemData):
+ return False
+
+ self.itemData[column] = value
+ return True
+
+ def parent(self):
+ return self.parentItem
+
+
+
+class NodeModel(QAbstractItemModel):
+ def __init__(self, parent):
+ QAbstractItemModel.__init__(self, parent)
+ self.__initRoot()
+
+ def clear(self):
+ self.rootItem.clear()
+ self.__initRoot()
+
+ def __initRoot(self):
+ self.rootItem = TreeItem([QString("Testbed"), QString("Hostname"), QString("Selected")])
+
+ def getItem(self, index):
+ if index.isValid():
+ item = index.internalPointer()
+ if item: return item
+ return self.rootItem