无法划分一个 QDomDocument() 节点的 xml 个元素，并使用 pyqt5 将这些元素附加到 DOM 模型
Cannot divide xml elements of one QDomDocument() node and append the elements to the DOM model with pyqt5
我有这段代码目前有效，可以直接查看 xml 文件：
from PyQt5.QtCore import QAbstractItemModel, QFile, QIODevice, QModelIndex, Qt
from PyQt5.QtWidgets import QApplication, QFileDialog, QMainWindow, QTreeView
from PyQt5.QtXml import QDomDocument, QDomElement
class DomItem(object):
def __init__(self, node, row, parent=None):
self.domNode = node
# Record the item's location within its parent.
self.rowNumber = row
self.parentItem = parent
self.childItems = {}
def node(self):
return self.domNode
def parent(self):
return self.parentItem
def child(self, i):
if i in self.childItems:
return self.childItems[i]
if 0 <= i < self.domNode.childNodes().count():
childNode = self.domNode.childNodes().item(i)
childItem = DomItem(childNode, i, self)
self.childItems[i] = childItem
return childItem
return None
def row(self):
return self.rowNumber
class DomModel(QAbstractItemModel):
def __init__(self, document, parent=None):
super(DomModel, self).__init__(parent)
self.domDocument = document
self.rootItem = DomItem(self.domDocument, 0)
def columnCount(self, parent):
# return 3
return 2
def data(self, index, role):
if not index.isValid():
return None
if role != Qt.DisplayRole:
return None
item = index.internalPointer()
node = item.node()
if index.column() == 0:
# print(node.nodeName())
if node.nodeName() != '#text':
return node.nodeName()
else:
return None
if index.column() == 1:
value = node.nodeValue()
if value is None:
return ''
else:
return ' '.join(node.nodeValue().split('\n'))
return None
def flags(self, index):
if not index.isValid():
return Qt.NoItemFlags
return Qt.ItemIsEnabled | Qt.ItemIsSelectable
def headerData(self, section, orientation, role):
if orientation == Qt.Horizontal and role == Qt.DisplayRole:
if section == 0:
return "Category"
if section == 1:
return "Name"
return None
def index(self, row, column, parent):
if not self.hasIndex(row, column, parent):
return QModelIndex()
if not parent.isValid():
parentItem = self.rootItem
else:
parentItem = parent.internalPointer()
childItem = parentItem.child(row)
if childItem:
return self.createIndex(row, column, childItem)
else:
return QModelIndex()
def parent(self, child):
if not child.isValid():
return QModelIndex()
childItem = child.internalPointer()
parentItem = childItem.parent()
if not parentItem or parentItem == self.rootItem:
return QModelIndex()
return self.createIndex(parentItem.row(), 0, parentItem)
def rowCount(self, parent):
if parent.column() > 0:
return 0
if not parent.isValid():
parentItem = self.rootItem
else:
parentItem = parent.internalPointer()
return parentItem.node().childNodes().count()
class MainWindow(QMainWindow):
def __init__(self):
super(MainWindow, self).__init__()
self.fileMenu = self.menuBar().addMenu("&File")
self.fileMenu.addAction("&Open...", self.openFile, "Ctrl+O")
self.fileMenu.addAction("E&xit", self.close, "Ctrl+Q")
self.xmlPath = ""
self.model = DomModel(QDomDocument(), self)
self.view = QTreeView(self)
self.view.setModel(self.model)
self.setCentralWidget(self.view)
self.setWindowTitle("Simple DOM Model")
def openFile(self, filePath):
if filePath:
f = QFile(filePath)
if f.open(QIODevice.ReadOnly):
document = QDomDocument()
if document.setContent(f):
newModel = DomModel(document, self)
self.view.setModel(newModel)
self.view.expandAll()
self.model = newModel
self.xmlPath = filePath
f.close()
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
window = MainWindow()
window.resize(640, 480)
window.show()
window.openFile('your file full path')
sys.exit(app.exec_())
xml 文件是：
<repoCoordinates>
<name>repostructuretrials</name>
<branches>master</branches>
<submodules>
<submodule_0>
<name>gameengine</name>
<branches>*master,remotes/origin/develop,remotes/origin/feature/NormalMappingAndTextureCombination,remotes/origin/feature/light,remotes/origin/feature/particleEmitter,remotes/origin/master</branches>
</submodule_0>
<submodule_1>
<name>GraphicEngineOpenGLBasics</name>
<branches>feature/shadows,*master,remotes/origin/develop,remotes/origin/feature/billboards,remotes/origin/feature/shadows,remotes/origin/master</branches>
</submodule_1>
</submodules>
</repoCoordinates>
我得到了这个：
代码量大但不是很复杂。
我的问题是我想将每个分支名称作为树模型中的不同项，并且所有用逗号分隔的值都是模型的唯一项。我尝试解析 xml，并使用 QDomElement() class 尝试将子节点附加到我的节点，以便能够分别选择每个分支。
我想用“,”拆分所有分支名称，并将这些节点添加到我的 DOM。
如果 QDomDocument class 不是最好的方法，我将不胜感激任何对此的帮助，以及处理此问题的任何建议。
非常感谢
这是一个非常基本的尝试，可以实现您想要的。
它所做的是在节点检测到其名称为 "branches" 时创建子子节点，以便项目模型可以将它们视为实际的子节点。通过在父 childItems dict 上写入自己的索引来手动创建子项，以便模型可以在父项之间导航。
请记住，这种方法远非完美：例如，模型和相关 DOM 不是写安全的（我对 QtXml 模块没有那么多的经验）。
class DomItem(object):
# ...
def child(self, i):
if i in self.childItems:
return self.childItems[i]
if 0 <= i < self.domNode.childNodes().count():
childNode = self.domNode.childNodes().item(i)
childItem = DomItem(childNode, i, self)
self.childItems[i] = childItem
if childNode.nodeName() == 'branches':
# based on your example xml there should be only one child entry
# for each "branches" node, but, just in case, let's cycle amongst
# every possible child node
subChildNodes = childNode.childNodes()
childIndex = 0
for c in range(subChildNodes.count()):
subChild = subChildNodes.at(c)
for tag in subChild.nodeValue().split(','):
branch = childNode.ownerDocument().createElement(tag)
childNode.appendChild(branch)
branchItem = DomItem(branch, childIndex, childItem)
childItem.childItems[childIndex] = branchItem
childIndex += 1
return childItem
return None
我有这段代码目前有效，可以直接查看 xml 文件：
from PyQt5.QtCore import QAbstractItemModel, QFile, QIODevice, QModelIndex, Qt
from PyQt5.QtWidgets import QApplication, QFileDialog, QMainWindow, QTreeView
from PyQt5.QtXml import QDomDocument, QDomElement
class DomItem(object):
def __init__(self, node, row, parent=None):
self.domNode = node
# Record the item's location within its parent.
self.rowNumber = row
self.parentItem = parent
self.childItems = {}
def node(self):
return self.domNode
def parent(self):
return self.parentItem
def child(self, i):
if i in self.childItems:
return self.childItems[i]
if 0 <= i < self.domNode.childNodes().count():
childNode = self.domNode.childNodes().item(i)
childItem = DomItem(childNode, i, self)
self.childItems[i] = childItem
return childItem
return None
def row(self):
return self.rowNumber
class DomModel(QAbstractItemModel):
def __init__(self, document, parent=None):
super(DomModel, self).__init__(parent)
self.domDocument = document
self.rootItem = DomItem(self.domDocument, 0)
def columnCount(self, parent):
# return 3
return 2
def data(self, index, role):
if not index.isValid():
return None
if role != Qt.DisplayRole:
return None
item = index.internalPointer()
node = item.node()
if index.column() == 0:
# print(node.nodeName())
if node.nodeName() != '#text':
return node.nodeName()
else:
return None
if index.column() == 1:
value = node.nodeValue()
if value is None:
return ''
else:
return ' '.join(node.nodeValue().split('\n'))
return None
def flags(self, index):
if not index.isValid():
return Qt.NoItemFlags
return Qt.ItemIsEnabled | Qt.ItemIsSelectable
def headerData(self, section, orientation, role):
if orientation == Qt.Horizontal and role == Qt.DisplayRole:
if section == 0:
return "Category"
if section == 1:
return "Name"
return None
def index(self, row, column, parent):
if not self.hasIndex(row, column, parent):
return QModelIndex()
if not parent.isValid():
parentItem = self.rootItem
else:
parentItem = parent.internalPointer()
childItem = parentItem.child(row)
if childItem:
return self.createIndex(row, column, childItem)
else:
return QModelIndex()
def parent(self, child):
if not child.isValid():
return QModelIndex()
childItem = child.internalPointer()
parentItem = childItem.parent()
if not parentItem or parentItem == self.rootItem:
return QModelIndex()
return self.createIndex(parentItem.row(), 0, parentItem)
def rowCount(self, parent):
if parent.column() > 0:
return 0
if not parent.isValid():
parentItem = self.rootItem
else:
parentItem = parent.internalPointer()
return parentItem.node().childNodes().count()
class MainWindow(QMainWindow):
def __init__(self):
super(MainWindow, self).__init__()
self.fileMenu = self.menuBar().addMenu("&File")
self.fileMenu.addAction("&Open...", self.openFile, "Ctrl+O")
self.fileMenu.addAction("E&xit", self.close, "Ctrl+Q")
self.xmlPath = ""
self.model = DomModel(QDomDocument(), self)
self.view = QTreeView(self)
self.view.setModel(self.model)
self.setCentralWidget(self.view)
self.setWindowTitle("Simple DOM Model")
def openFile(self, filePath):
if filePath:
f = QFile(filePath)
if f.open(QIODevice.ReadOnly):
document = QDomDocument()
if document.setContent(f):
newModel = DomModel(document, self)
self.view.setModel(newModel)
self.view.expandAll()
self.model = newModel
self.xmlPath = filePath
f.close()
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
window = MainWindow()
window.resize(640, 480)
window.show()
window.openFile('your file full path')
sys.exit(app.exec_())
xml 文件是：
<repoCoordinates>
<name>repostructuretrials</name>
<branches>master</branches>
<submodules>
<submodule_0>
<name>gameengine</name>
<branches>*master,remotes/origin/develop,remotes/origin/feature/NormalMappingAndTextureCombination,remotes/origin/feature/light,remotes/origin/feature/particleEmitter,remotes/origin/master</branches>
</submodule_0>
<submodule_1>
<name>GraphicEngineOpenGLBasics</name>
<branches>feature/shadows,*master,remotes/origin/develop,remotes/origin/feature/billboards,remotes/origin/feature/shadows,remotes/origin/master</branches>
</submodule_1>
</submodules>
</repoCoordinates>
我得到了这个：
代码量大但不是很复杂。
我的问题是我想将每个分支名称作为树模型中的不同项，并且所有用逗号分隔的值都是模型的唯一项。我尝试解析 xml，并使用 QDomElement() class 尝试将子节点附加到我的节点，以便能够分别选择每个分支。
我想用“,”拆分所有分支名称，并将这些节点添加到我的 DOM。
如果 QDomDocument class 不是最好的方法，我将不胜感激任何对此的帮助，以及处理此问题的任何建议。
非常感谢
这是一个非常基本的尝试，可以实现您想要的。
它所做的是在节点检测到其名称为 "branches" 时创建子子节点，以便项目模型可以将它们视为实际的子节点。通过在父 childItems dict 上写入自己的索引来手动创建子项，以便模型可以在父项之间导航。
请记住，这种方法远非完美：例如，模型和相关 DOM 不是写安全的（我对 QtXml 模块没有那么多的经验）。
class DomItem(object):
# ...
def child(self, i):
if i in self.childItems:
return self.childItems[i]
if 0 <= i < self.domNode.childNodes().count():
childNode = self.domNode.childNodes().item(i)
childItem = DomItem(childNode, i, self)
self.childItems[i] = childItem
if childNode.nodeName() == 'branches':
# based on your example xml there should be only one child entry
# for each "branches" node, but, just in case, let's cycle amongst
# every possible child node
subChildNodes = childNode.childNodes()
childIndex = 0
for c in range(subChildNodes.count()):
subChild = subChildNodes.at(c)
for tag in subChild.nodeValue().split(','):
branch = childNode.ownerDocument().createElement(tag)
childNode.appendChild(branch)
branchItem = DomItem(branch, childIndex, childItem)
childItem.childItems[childIndex] = branchItem
childIndex += 1
return childItem
return None