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Diffstat (limited to 'examples/xml/dombookmarks/dombookmarks.py')
| -rwxr-xr-x | examples/xml/dombookmarks/dombookmarks.py | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/examples/xml/dombookmarks/dombookmarks.py b/examples/xml/dombookmarks/dombookmarks.py new file mode 100755 index 000000000..77c2bad67 --- /dev/null +++ b/examples/xml/dombookmarks/dombookmarks.py @@ -0,0 +1,263 @@ +#!/usr/bin/env python + +############################################################################# +## +## Copyright (C) 2013 Riverbank Computing Limited. +## Copyright (C) 2016 The Qt Company Ltd. +## Contact: http://www.qt.io/licensing/ +## +## This file is part of the PySide examples of the Qt Toolkit. +## +## $QT_BEGIN_LICENSE:BSD$ +## You may use this file under the terms of the BSD license as follows: +## +## "Redistribution and use in source and binary forms, with or without +## modification, are permitted provided that the following conditions are +## met: +## * Redistributions of source code must retain the above copyright +## notice, this list of conditions and the following disclaimer. +## * Redistributions in binary form must reproduce the above copyright +## notice, this list of conditions and the following disclaimer in +## the documentation and/or other materials provided with the +## distribution. +## * Neither the name of The Qt Company Ltd nor the names of its +## contributors may be used to endorse or promote products derived +## from this software without specific prior written permission. +## +## +## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +## +## $QT_END_LICENSE$ +## +############################################################################# + +"""PySide2 port of the xml/dombookmarks example from Qt v5.x""" + +from PySide2 import QtCore, QtGui, QtWidgets, QtXml + + +class MainWindow(QtWidgets.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 = QtWidgets.QFileDialog.getOpenFileName(self, + "Open Bookmark File", QtCore.QDir.currentPath(), + "XBEL Files (*.xbel *.xml)")[0] + + if not fileName: + return + + inFile = QtCore.QFile(fileName) + if not inFile.open(QtCore.QFile.ReadOnly | QtCore.QFile.Text): + QtWidgets.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 = QtWidgets.QFileDialog.getSaveFileName(self, + "Save Bookmark File", QtCore.QDir.currentPath(), + "XBEL Files (*.xbel *.xml)")[0] + + if not fileName: + return + + outFile = QtCore.QFile(fileName) + if not outFile.open(QtCore.QFile.WriteOnly | QtCore.QFile.Text): + QtWidgets.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): + QtWidgets.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 = QtWidgets.QAction("&Open...", self, shortcut="Ctrl+O", + triggered=self.open) + + self.saveAsAct = QtWidgets.QAction("&Save As...", self, shortcut="Ctrl+S", + triggered=self.saveAs) + + self.exitAct = QtWidgets.QAction("E&xit", self, shortcut="Ctrl+Q", + triggered=self.close) + + self.aboutAct = QtWidgets.QAction("&About", self, triggered=self.about) + + self.aboutQtAct = QtWidgets.QAction("About &Qt", self, + triggered=QtWidgets.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(QtWidgets.QTreeWidget): + def __init__(self, parent=None): + super(XbelTree, self).__init__(parent) + + self.header().setSectionResizeMode(QtWidgets.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(QtWidgets.QStyle.SP_DirClosedIcon), + QtGui.QIcon.Normal, QtGui.QIcon.Off) + self.folderIcon.addPixmap(self.style().standardPixmap(QtWidgets.QStyle.SP_DirOpenIcon), + QtGui.QIcon.Normal, QtGui.QIcon.On) + self.bookmarkIcon.addPixmap(self.style().standardPixmap(QtWidgets.QStyle.SP_FileIcon)) + + def read(self, device): + ok, errorStr, errorLine, errorColumn = self.domDocument.setContent(device, True) + if not ok: + QtWidgets.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': + QtWidgets.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': + QtWidgets.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 = QtWidgets.QTreeWidgetItem() + + if parentItem is not None: + item = QtWidgets.QTreeWidgetItem(parentItem) + else: + item = QtWidgets.QTreeWidgetItem(self) + + self.domElementForItem[id(item)] = element + return item + + +if __name__ == '__main__': + + import sys + + app = QtWidgets.QApplication(sys.argv) + mainWin = MainWindow() + mainWin.show() + mainWin.open() + sys.exit(app.exec_()) |