diff options
Diffstat (limited to 'src/plugins/texteditor/codecselector.cpp')
| -rw-r--r-- | src/plugins/texteditor/codecselector.cpp | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/src/plugins/texteditor/codecselector.cpp b/src/plugins/texteditor/codecselector.cpp new file mode 100644 index 0000000000..5893fa5b71 --- /dev/null +++ b/src/plugins/texteditor/codecselector.cpp @@ -0,0 +1,179 @@ +/*************************************************************************** +** +** This file is part of Qt Creator +** +** Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). +** +** Contact: Qt Software Information (qt-info@nokia.com) +** +** +** Non-Open Source Usage +** +** Licensees may use this file in accordance with the Qt Beta Version +** License Agreement, Agreement version 2.2 provided with the Software or, +** alternatively, in accordance with the terms contained in a written +** agreement between you and Nokia. +** +** GNU General Public License Usage +** +** Alternatively, this file may be used under the terms of the GNU General +** Public License versions 2.0 or 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the packaging +** of this file. Please review the following information to ensure GNU +** General Public Licensing requirements will be met: +** +** http://www.fsf.org/licensing/licenses/info/GPLv2.html and +** http://www.gnu.org/copyleft/gpl.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt GPL Exception version +** 1.2, included in the file GPL_EXCEPTION.txt in this package. +** +***************************************************************************/ +#include "codecselector.h" +#include "basetextdocument.h" + + +#include <QtCore/QDebug> +#include <QtCore/QFileInfo> +#include <QtCore/QTextCodec> +#include <QtGui/QPushButton> +#include <QtGui/QScrollBar> +#include <QtGui/QVBoxLayout> + +using namespace TextEditor; +using namespace TextEditor::Internal; + + +namespace TextEditor { + namespace Internal { + + /* custom class to make sure the width is wide enough for the + * contents. Should be easier with Qt. */ + class CodecListWidget : public QListWidget { + public: + CodecListWidget(QWidget *parent):QListWidget(parent){} + QSize sizeHint() const { + return QListWidget::sizeHint().expandedTo( + QSize(sizeHintForColumn(0) + verticalScrollBar()->sizeHint().width() + 4, 0)); + } + }; + } +} + +CodecSelector::CodecSelector(QWidget *parent, BaseTextDocument *doc) + : QDialog(parent) +{ + m_hasDecodingError = doc->hasDecodingError(); + m_isModified = doc->isModified(); + + QByteArray buf; + if (m_hasDecodingError) + buf = doc->decodingErrorSample(); + + setWindowTitle(tr("Text Encoding")); + m_label = new QLabel(this); + QString decodingErrorHint; + if (m_hasDecodingError) + decodingErrorHint = tr("\nThe following encodings are likely to fit:"); + m_label->setText(tr("Select encoding for \"%1\".%2").arg(QFileInfo(doc->fileName()).fileName()).arg(decodingErrorHint)); + + m_listWidget = new CodecListWidget(this); + + QStringList encodings; + + QList<int> mibs = QTextCodec::availableMibs(); + qSort(mibs); + QList<int> sortedMibs; + foreach(int mib, mibs) + if (mib >= 0) + sortedMibs += mib; + foreach(int mib, mibs) + if (mib < 0) + sortedMibs += mib; + + int currentIndex = -1; + foreach(int mib, sortedMibs) { + QTextCodec *c = QTextCodec::codecForMib(mib); + if (!buf.isEmpty()) { + + // slow, should use a feature from QTextCodec or QTextDecoder (but those are broken currently) + QByteArray verifyBuf = c->fromUnicode(c->toUnicode(buf)); + // the minSize trick lets us ignore unicode headers + int minSize = qMin(verifyBuf.size(), buf.size()); + if (minSize < buf.size() - 4 + || memcmp(verifyBuf.constData() + verifyBuf.size() - minSize, + buf.constData() + buf.size() - minSize, minSize)) + continue; + } + QString names = QString::fromLatin1(c->name()); + foreach(QByteArray alias, c->aliases()) { + names += QLatin1String(" / ") + QString::fromLatin1(alias); + } + if (doc->codec() == c) + currentIndex = encodings.count(); + encodings << names; + } + m_listWidget->addItems(encodings); + if (currentIndex >= 0) + m_listWidget->setCurrentRow(currentIndex); + + connect(m_listWidget, SIGNAL(itemSelectionChanged()), this, SLOT(updateButtons())); + + m_dialogButtonBox = new QDialogButtonBox(this); + m_reloadButton = m_dialogButtonBox->addButton(tr("Reload with Encoding"), QDialogButtonBox::DestructiveRole); + m_saveButton = m_dialogButtonBox->addButton(tr("Save with Encoding"), QDialogButtonBox::DestructiveRole); + m_dialogButtonBox->addButton(QDialogButtonBox::Cancel); + connect(m_dialogButtonBox, SIGNAL(clicked(QAbstractButton*)), this, SLOT(buttonClicked(QAbstractButton*))); + + QVBoxLayout *vbox = new QVBoxLayout(this); + vbox->addWidget(m_label); + vbox->addWidget(m_listWidget); + vbox->addWidget(m_dialogButtonBox); + + updateButtons(); +} + + + +CodecSelector::~CodecSelector() +{ +} + +void CodecSelector::updateButtons() +{ + bool hasCodec = (selectedCodec() != 0); + m_reloadButton->setEnabled(!m_isModified && hasCodec); + m_saveButton->setEnabled(!m_hasDecodingError && hasCodec); +} + +QTextCodec *CodecSelector::selectedCodec() const +{ + if (QListWidgetItem *item = m_listWidget->currentItem()) { + if (!item->isSelected()) + return 0; + QString codecName = item->text(); + if (codecName.contains(QLatin1String(" / "))) + codecName = codecName.left(codecName.indexOf(QLatin1String(" / "))); + return QTextCodec::codecForName(codecName.toLatin1()); + } + return 0; +} + + +CodecSelector::Result CodecSelector::exec() +{ + return (Result) QDialog::exec(); +} + + +void CodecSelector::buttonClicked(QAbstractButton *button) +{ + Result result = Cancel; + if (button == m_reloadButton) + result = Reload; + if (button == m_saveButton) + result = Save; + done(result); +} + |