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#!/usr/bin/env python
"""PyQt4 port of the xml/dombookmarks example from Qt v4.x"""
from PyQt4 import QtCore, QtGui, QtXml
class MainWindow(QtGui.QMainWindow):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
self.xbelTree = XbelTree()
self.setCentralWidget(self.xbelTree)
self.createActions()
self.createMenus()
self.statusBar().showMessage("Ready")
self.setWindowTitle("DOM Bookmarks")
self.resize(480, 320)
def open(self):
fileName = QtGui.QFileDialog.getOpenFileName(self,
"Open Bookmark File", QtCore.QDir.currentPath(),
"XBEL Files (*.xbel *.xml)")
if not fileName:
return
inFile = QtCore.QFile(fileName)
if not inFile.open(QtCore.QFile.ReadOnly | QtCore.QFile.Text):
QtGui.QMessageBox.warning(self, "DOM Bookmarks",
"Cannot read file %s:\n%s." % (fileName, inFile.errorString()))
return
if self.xbelTree.read(inFile):
self.statusBar().showMessage("File loaded", 2000)
def saveAs(self):
fileName = QtGui.QFileDialog.getSaveFileName(self,
"Save Bookmark File", QtCore.QDir.currentPath(),
"XBEL Files (*.xbel *.xml)")
if not fileName:
return
outFile = QtCore.QFile(fileName)
if not outFile.open(QtCore.QFile.WriteOnly | QtCore.QFile.Text):
QtGui.QMessageBox.warning(self, "DOM Bookmarks",
"Cannot write file %s:\n%s." % (fileName, outFile.errorString()))
return
if self.xbelTree.write(outFile):
self.statusBar().showMessage("File saved", 2000)
def about(self):
QtGui.QMessageBox.about(self, "About DOM Bookmarks",
"The <b>DOM Bookmarks</b> example demonstrates how to use Qt's "
"DOM classes to read and write XML documents.")
def createActions(self):
self.openAct = QtGui.QAction("&Open...", self, shortcut="Ctrl+O",
triggered=self.open)
self.saveAsAct = QtGui.QAction("&Save As...", self, shortcut="Ctrl+S",
triggered=self.saveAs)
self.exitAct = QtGui.QAction("E&xit", self, shortcut="Ctrl+Q",
triggered=self.close)
self.aboutAct = QtGui.QAction("&About", self, triggered=self.about)
self.aboutQtAct = QtGui.QAction("About &Qt", self,
triggered=QtGui.qApp.aboutQt)
def createMenus(self):
self.fileMenu = self.menuBar().addMenu("&File")
self.fileMenu.addAction(self.openAct)
self.fileMenu.addAction(self.saveAsAct)
self.fileMenu.addAction(self.exitAct)
self.menuBar().addSeparator()
self.helpMenu = self.menuBar().addMenu("&Help")
self.helpMenu.addAction(self.aboutAct)
self.helpMenu.addAction(self.aboutQtAct)
class XbelTree(QtGui.QTreeWidget):
def __init__(self, parent=None):
super(XbelTree, self).__init__(parent)
self.header().setResizeMode(QtGui.QHeaderView.Stretch)
self.setHeaderLabels(("Title", "Location"))
self.domDocument = QtXml.QDomDocument()
self.domElementForItem = {}
self.folderIcon = QtGui.QIcon()
self.bookmarkIcon = QtGui.QIcon()
self.folderIcon.addPixmap(self.style().standardPixmap(QtGui.QStyle.SP_DirClosedIcon),
QtGui.QIcon.Normal, QtGui.QIcon.Off)
self.folderIcon.addPixmap(self.style().standardPixmap(QtGui.QStyle.SP_DirOpenIcon),
QtGui.QIcon.Normal, QtGui.QIcon.On)
self.bookmarkIcon.addPixmap(self.style().standardPixmap(QtGui.QStyle.SP_FileIcon))
def read(self, device):
ok, errorStr, errorLine, errorColumn = self.domDocument.setContent(device, True)
if not ok:
QtGui.QMessageBox.information(self.window(), "DOM Bookmarks",
"Parse error at line %d, column %d:\n%s" % (errorLine, errorColumn, errorStr))
return False
root = self.domDocument.documentElement()
if root.tagName() != 'xbel':
QtGui.QMessageBox.information(self.window(), "DOM Bookmarks",
"The file is not an XBEL file.")
return False
elif root.hasAttribute('version') and root.attribute('version') != '1.0':
QtGui.QMessageBox.information(self.window(), "DOM Bookmarks",
"The file is not an XBEL version 1.0 file.")
return False
self.clear()
# It might not be connected.
try:
self.itemChanged.disconnect(self.updateDomElement)
except:
pass
child = root.firstChildElement('folder')
while not child.isNull():
self.parseFolderElement(child)
child = child.nextSiblingElement('folder')
self.itemChanged.connect(self.updateDomElement)
return True
def write(self, device):
indentSize = 4
out = QtCore.QTextStream(device)
self.domDocument.save(out, indentSize)
return True
def updateDomElement(self, item, column):
element = self.domElementForItem.get(id(item))
if not element.isNull():
if column == 0:
oldTitleElement = element.firstChildElement('title')
newTitleElement = self.domDocument.createElement('title')
newTitleText = self.domDocument.createTextNode(item.text(0))
newTitleElement.appendChild(newTitleText)
element.replaceChild(newTitleElement, oldTitleElement)
else:
if element.tagName() == 'bookmark':
element.setAttribute('href', item.text(1))
def parseFolderElement(self, element, parentItem=None):
item = self.createItem(element, parentItem)
title = element.firstChildElement('title').text()
if not title:
title = "Folder"
item.setFlags(item.flags() | QtCore.Qt.ItemIsEditable)
item.setIcon(0, self.folderIcon)
item.setText(0, title)
folded = (element.attribute('folded') != 'no')
self.setItemExpanded(item, not folded)
child = element.firstChildElement()
while not child.isNull():
if child.tagName() == 'folder':
self.parseFolderElement(child, item)
elif child.tagName() == 'bookmark':
childItem = self.createItem(child, item)
title = child.firstChildElement('title').text()
if not title:
title = "Folder"
childItem.setFlags(item.flags() | QtCore.Qt.ItemIsEditable)
childItem.setIcon(0, self.bookmarkIcon)
childItem.setText(0, title)
childItem.setText(1, child.attribute('href'))
elif child.tagName() == 'separator':
childItem = self.createItem(child, item)
childItem.setFlags(item.flags() & ~(QtCore.Qt.ItemIsSelectable | QtCore.Qt.ItemIsEditable))
childItem.setText(0, 30 * "\xb7")
child = child.nextSiblingElement()
def createItem(self, element, parentItem=None):
item = QtGui.QTreeWidgetItem()
if parentItem is not None:
item = QtGui.QTreeWidgetItem(parentItem)
else:
item = QtGui.QTreeWidgetItem(self)
self.domElementForItem[id(item)] = element
return item
if __name__ == '__main__':
import sys
app = QtGui.QApplication(sys.argv)
mainWin = MainWindow()
mainWin.show()
mainWin.open()
sys.exit(app.exec_())
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