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Diffstat (limited to 'examples/StreamBookmarks.js')
| -rw-r--r-- | examples/StreamBookmarks.js | 379 |
1 files changed, 379 insertions, 0 deletions
diff --git a/examples/StreamBookmarks.js b/examples/StreamBookmarks.js new file mode 100644 index 0000000..3c7204c --- /dev/null +++ b/examples/StreamBookmarks.js @@ -0,0 +1,379 @@ +/**************************************************************************** +** +** Copyright (C) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the Qt Script Generator project on Qt Labs. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +function tr(s) { return s; } + + +function XbelWriter(treeWidget) +{ + QXmlStreamWriter.call(this); + this.treeWidget = treeWidget; + this.setAutoFormatting(true); +} + +XbelWriter.prototype = new QXmlStreamWriter(); + +XbelWriter.prototype.writeFile = function(device) +{ + this.setDevice(device); + + this.writeStartDocument(); + this.writeDTD("<!DOCTYPE xbel>"); + this.writeStartElement("xbel"); + this.writeAttribute("version", "1.0"); + for (var i = 0; i < this.treeWidget.topLevelItemCount; ++i) + this.writeItem(this.treeWidget.topLevelItem(i)); + + this.writeEndDocument(); + return true; +} + +XbelWriter.prototype.writeItem = function(item) +{ + var tagName = item.data(0, Qt.UserRole); + if (tagName == "folder") { + var folded = !item.isExpanded(); + this.writeStartElement(tagName); + this.writeAttribute("folded", folded ? "yes" : "no"); + this.writeTextElement("title", item.text(0)); + for (var i = 0; i < item.childCount(); ++i) + this.writeItem(item.child(i)); + this.writeEndElement(); + } else if (tagName == "bookmark") { + this.writeStartElement(tagName); + if (item.text(1) != "") + this.writeAttribute("href", item.text(1)); + this.writeTextElement("title", item.text(0)); + this.writeEndElement(); + } else if (tagName == "separator") { + this.writeEmptyElement(tagName); + } +} + + + +function XbelReader(treeWidget) +{ + QXmlStreamReader.call(this); + this.treeWidget = treeWidget; + + var style = treeWidget.style(); + + this.folderIcon = new QIcon(); + this.folderIcon.addPixmap(style.standardPixmap(QStyle.SP_DirClosedIcon), + QIcon.Normal, QIcon.Off); + this.folderIcon.addPixmap(style.standardPixmap(QStyle.SP_DirOpenIcon), + QIcon.Normal, QIcon.On); + this.bookmarkIcon = new QIcon(); + this.bookmarkIcon.addPixmap(style.standardPixmap(QStyle.SP_FileIcon)); +} + +XbelReader.prototype = new QXmlStreamReader(); + +XbelReader.prototype.read = function(device) +{ + this.setDevice(device); + + while (!this.atEnd()) { + this.readNext(); + + if (this.isStartElement()) { + if (this.name() == "xbel" && this.attributes().value("version") == "1.0") + this.readXBEL(); + else + this.raiseError(tr("The file is not an XBEL version 1.0 file.")); + } + } + + return this.error() == QXmlStreamReader.NoError; +} + +XbelReader.prototype.readUnknownElement = function() +{ + while (!this.atEnd()) { + this.readNext(); + + if (this.isEndElement()) + break; + + if (this.isStartElement()) + this.readUnknownElement(); + } +} + +XbelReader.prototype.readXBEL = function() +{ +// Q_ASSERT(isStartElement() && name() == "xbel"); + + while (!this.atEnd()) { + this.readNext(); + + if (this.isEndElement()) + break; + + if (this.isStartElement()) { + if (this.name() == "folder") + this.readFolder(null); + else if (name() == "bookmark") + this.readBookmark(null); + else if (name() == "separator") + this.readSeparator(null); + else + this.readUnknownElement(); + } + } +} + +XbelReader.prototype.readTitle = function(item) +{ +// Q_ASSERT(isStartElement() && name() == "title"); + + var title = this.readElementText(); + item.setText(0, title); +} + +XbelReader.prototype.readSeparator = function(item) +{ + var separator = this.createChildItem(item); + separator.setFlags(Qt.ItemFlags(item.flags() & ~Qt.ItemIsSelectable)); + separator.setText(0, "---" /*QString(30, 0xB7)*/); + this.readElementText(); +} + +XbelReader.prototype.readFolder = function(item) +{ +// Q_ASSERT(isStartElement() && name() == "folder"); + + var folder = this.createChildItem(item); + var folded = (this.attributes().value("folded") != "no"); + folder.setExpanded(!folded); + + while (!this.atEnd()) { + this.readNext(); + + if (this.isEndElement()) + break; + + if (this.isStartElement()) { + if (this.name() == "title") + this.readTitle(folder); + else if (this.name() == "folder") + this.readFolder(folder); + else if (this.name() == "bookmark") + this.readBookmark(folder); + else if (this.name() == "separator") + this.readSeparator(folder); + else + this.readUnknownElement(); + } + } +} + +XbelReader.prototype.readBookmark = function(item) +{ +// Q_ASSERT(isStartElement() && name() == "bookmark"); + + var bookmark = this.createChildItem(item); + bookmark.setFlags(Qt.ItemFlags(bookmark.flags() | Qt.ItemIsEditable)); + bookmark.setIcon(0, this.bookmarkIcon); + bookmark.setText(0, tr("Unknown title")); + bookmark.setText(1, this.attributes().value("href")); + while (!this.atEnd()) { + this.readNext(); + + if (this.isEndElement()) + break; + + if (this.isStartElement()) { + if (this.name() == "title") + this.readTitle(bookmark); + else + this.readUnknownElement(); + } + } +} + +XbelReader.prototype.createChildItem = function(item) +{ + var childItem; + if (item) { + childItem = new QTreeWidgetItem(item); + } else { +// ### childItem = new QTreeWidgetItem(this.treeWidget); + childItem = new QTreeWidgetItem(); + this.treeWidget.addTopLevelItem(childItem); + } + childItem.setData(0, Qt.UserRole, this.name()); + return childItem; +} + + + +function MainWindow() +{ + QMainWindow.call(this); + + var labels = new Array(); + labels.push(tr("Title")); + labels.push(tr("Location")); + + this.treeWidget = new QTreeWidget(); + this.treeWidget.header().setResizeMode(QHeaderView.Stretch); + this.treeWidget.setHeaderLabels(labels); + this.setCentralWidget(this.treeWidget); + + this.createActions(); + this.createMenus(); + + this.statusBar().showMessage(tr("Ready")); + + this.windowTitle = tr("QXmlStream Bookmarks"); + this.resize(480, 320); +} + +MainWindow.prototype = new QMainWindow(); + +MainWindow.prototype.open = function() +{ + var fileName = + QFileDialog.getOpenFileName(this, tr("Open Bookmark File"), + QDir.currentPath(), + tr("XBEL Files (*.xbel *.xml)")); + if (fileName == "") + return; + + this.treeWidget.clear(); + + + var file = new QFile(fileName); + if (!file.open(QIODevice.OpenMode(QIODevice.ReadOnly, QIODevice.Text))) { + QMessageBox.warning(this, tr("QXmlStream Bookmarks"), + tr("Cannot read file %1:\n%2.") + .arg(fileName) + .arg(file.errorString())); + return; + } + + var reader = new XbelReader(this.treeWidget); + if (!reader.read(file)) { + QMessageBox.warning(this, tr("QXmlStream Bookmarks"), + tr("Parse error in file " + fileName + " at line " + reader.lineNumber() + + ", column " + reader.columnNumber() + ":\n" + reader.errorString())); + } else { + this.statusBar().showMessage(tr("File loaded"), 2000); + } + +} + +MainWindow.prototype.saveAs = function() +{ + var fileName = + QFileDialog.getSaveFileName(this, tr("Save Bookmark File"), + QDir.currentPath(), + tr("XBEL Files (*.xbel *.xml)")); + if (fileName == "") + return; + + var file = new QFile(fileName); + if (!file.open(QIODevice.OpenMode(QIODevice.WriteOnly, QIODevice.Text))) { + QMessageBox.warning(this, tr("QXmlStream Bookmarks"), + tr("Cannot write file %1:\n%2.") + .arg(fileName) + .arg(file.errorString())); + return; + } + + var writer = new XbelWriter(this.treeWidget); + if (writer.writeFile(file)) + this.statusBar().showMessage(tr("File saved"), 2000); +} + +MainWindow.prototype.about = function() +{ + QMessageBox.about(this, tr("About QXmlStream Bookmarks"), + tr("The <b>QXmlStream Bookmarks</b> example demonstrates how to use Qt's QXmlStream classes to read and write XML documents.")); +} + +MainWindow.prototype.createActions = function() +{ + this.openAct = new QAction(tr("&Open..."), this); + this.openAct.shortcut = tr("Ctrl+O"); + this.openAct.triggered.connect(this, this.open); + + this.saveAsAct = new QAction(tr("&Save As..."), this); + this.saveAsAct.shortcut = tr("Ctrl+S"); + this.saveAsAct.triggered.connect(this, this.saveAs); + + this.exitAct = new QAction(tr("E&xit"), this); + this.exitAct.shortcut = tr("Ctrl+Q"); + this.exitAct.triggered.connect(this, this.close); + + this.aboutAct = new QAction(tr("&About"), this); + this.aboutAct.triggered.connect(this, this.about); + + this.aboutQtAct = new QAction(tr("About &Qt"), this); +// ### this.aboutQtAct.triggered.connect(QApplication.aboutQt); + this.aboutQtAct.triggered.connect(qApp.aboutQt); +} + +MainWindow.prototype.createMenus = function() +{ + this.fileMenu = this.menuBar().addMenu(tr("&File")); + +// ### working around bug in QMenu.prototype.addAction + QMenu.prototype.addAction = QWidget.prototype.addAction; + + this.fileMenu.addAction(this.openAct); + this.fileMenu.addAction(this.saveAsAct); + this.fileMenu.addAction(this.exitAct); + + this.menuBar().addSeparator(); + + this.helpMenu = this.menuBar().addMenu(tr("&Help")); + this.helpMenu.addAction(this.aboutAct); + this.helpMenu.addAction(this.aboutQtAct); +} + + +var mainWin = new MainWindow(); +mainWin.show(); +mainWin.open(); +QCoreApplication.exec(); |