1 files changed, 348 insertions, 0 deletions
diff --git a/examples/quickcontrols/texteditor/documenthandler.cpp b/examples/quickcontrols/texteditor/documenthandler.cpp
new file mode 100644
index 0000000000..9571aa03ba
--- /dev/null
+++ b/examples/quickcontrols/texteditor/documenthandler.cpp
@@ -0,0 +1,348 @@
+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include "documenthandler.h"
+
+#include <QFile>
+#include <QFileInfo>
+#include <QFileSelector>
+#include <QMimeDatabase>
+#include <QQmlFile>
+#include <QQmlFileSelector>
+#include <QQuickTextDocument>
+#include <QTextCharFormat>
+#include <QStringDecoder>
+#include <QTextDocument>
+#include <QDebug>
+
+DocumentHandler::DocumentHandler(QObject *parent)
+    : QObject(parent)
+    , m_document(nullptr)
+    , m_cursorPosition(-1)
+    , m_selectionStart(0)
+    , m_selectionEnd(0)
+{
+}
+
+QQuickTextDocument *DocumentHandler::document() const
+{
+    return m_document;
+}
+
+void DocumentHandler::setDocument(QQuickTextDocument *document)
+{
+    if (document == m_document)
+        return;
+
+    if (m_document)
+        disconnect(m_document->textDocument(), &QTextDocument::modificationChanged, this, &DocumentHandler::modifiedChanged);
+    m_document = document;
+    if (m_document)
+        connect(m_document->textDocument(), &QTextDocument::modificationChanged, this, &DocumentHandler::modifiedChanged);
+    emit documentChanged();
+}
+
+int DocumentHandler::cursorPosition() const
+{
+    return m_cursorPosition;
+}
+
+void DocumentHandler::setCursorPosition(int position)
+{
+    if (position == m_cursorPosition)
+        return;
+
+    m_cursorPosition = position;
+    reset();
+    emit cursorPositionChanged();
+}
+
+int DocumentHandler::selectionStart() const
+{
+    return m_selectionStart;
+}
+
+void DocumentHandler::setSelectionStart(int position)
+{
+    if (position == m_selectionStart)
+        return;
+
+    m_selectionStart = position;
+    emit selectionStartChanged();
+}
+
+int DocumentHandler::selectionEnd() const
+{
+    return m_selectionEnd;
+}
+
+void DocumentHandler::setSelectionEnd(int position)
+{
+    if (position == m_selectionEnd)
+        return;
+
+    m_selectionEnd = position;
+    emit selectionEndChanged();
+}
+
+QColor DocumentHandler::textColor() const
+{
+    QTextCursor cursor = textCursor();
+    if (cursor.isNull())
+        return QColor(Qt::black);
+    QTextCharFormat format = cursor.charFormat();
+    return format.foreground().color();
+}
+
+void DocumentHandler::setTextColor(const QColor &color)
+{
+    QTextCharFormat format;
+    format.setForeground(QBrush(color));
+    mergeFormatOnWordOrSelection(format);
+    emit textColorChanged();
+}
+
+Qt::Alignment DocumentHandler::alignment() const
+{
+    QTextCursor cursor = textCursor();
+    if (cursor.isNull())
+        return Qt::AlignLeft;
+    return textCursor().blockFormat().alignment();
+}
+
+void DocumentHandler::setAlignment(Qt::Alignment alignment)
+{
+    QTextBlockFormat format;
+    format.setAlignment(alignment);
+    QTextCursor cursor = textCursor();
+    cursor.mergeBlockFormat(format);
+    emit alignmentChanged();
+}
+
+QString DocumentHandler::fileName() const
+{
+    const QString filePath = QQmlFile::urlToLocalFileOrQrc(m_fileUrl);
+    const QString fileName = QFileInfo(filePath).fileName();
+    if (fileName.isEmpty())
+        return QStringLiteral("untitled.txt");
+    return fileName;
+}
+
+QString DocumentHandler::fileType() const
+{
+    return QFileInfo(fileName()).suffix();
+}
+
+QUrl DocumentHandler::fileUrl() const
+{
+    return m_fileUrl;
+}
+
+void DocumentHandler::load(const QUrl &fileUrl)
+{
+    if (fileUrl == m_fileUrl)
+        return;
+
+    QQmlEngine *engine = qmlEngine(this);
+    if (!engine) {
+        qWarning() << "load() called before DocumentHandler has QQmlEngine";
+        return;
+    }
+
+    const QUrl path = QQmlFileSelector::get(engine)->selector()->select(fileUrl);
+    const QString fileName = QQmlFile::urlToLocalFileOrQrc(path);
+    if (QFile::exists(fileName)) {
+        QMimeType mime = QMimeDatabase().mimeTypeForFile(fileName);
+        QFile file(fileName);
+        if (file.open(QFile::ReadOnly)) {
+            QByteArray data = file.readAll();
+            if (QTextDocument *doc = textDocument()) {
+                doc->setBaseUrl(path.adjusted(QUrl::RemoveFilename));
+                doc->setModified(false);
+                if (mime.inherits("text/markdown")) {
+                    emit loaded(QString::fromUtf8(data), Qt::MarkdownText);
+                } else {
+                    auto encoding = QStringConverter::encodingForHtml(data);
+                    if (encoding) {
+                        QStringDecoder decoder(*encoding);
+                        emit loaded(decoder(data), Qt::AutoText);
+                    } else {
+                        // fall back to utf8
+                        emit loaded(QString::fromUtf8(data), Qt::AutoText);
+                    }
+                }
+            }
+
+            reset();
+        }
+    }
+
+    m_fileUrl = fileUrl;
+    emit fileUrlChanged();
+}
+
+void DocumentHandler::saveAs(const QUrl &fileUrl)
+{
+    QTextDocument *doc = textDocument();
+    if (!doc)
+        return;
+
+    const QString filePath = fileUrl.toLocalFile();
+    const bool isHtml = QFileInfo(filePath).suffix().contains(QLatin1String("htm"));
+    QFile file(filePath);
+    if (!file.open(QFile::WriteOnly | QFile::Truncate | (isHtml ? QFile::NotOpen : QFile::Text))) {
+        emit error(tr("Cannot save: ") + file.errorString());
+        return;
+    }
+    file.write((isHtml ? doc->toHtml() : doc->toPlainText()).toUtf8());
+    file.close();
+
+    if (fileUrl == m_fileUrl)
+        return;
+
+    m_fileUrl = fileUrl;
+    emit fileUrlChanged();
+}
+
+void DocumentHandler::reset()
+{
+    emit alignmentChanged();
+    emit textColorChanged();
+    emit fontChanged();
+}
+
+QTextCursor DocumentHandler::textCursor() const
+{
+    QTextDocument *doc = textDocument();
+    if (!doc)
+        return QTextCursor();
+
+    QTextCursor cursor = QTextCursor(doc);
+    if (m_selectionStart != m_selectionEnd) {
+        cursor.setPosition(m_selectionStart);
+        cursor.setPosition(m_selectionEnd, QTextCursor::KeepAnchor);
+    } else {
+        cursor.setPosition(m_cursorPosition);
+    }
+    return cursor;
+}
+
+QTextDocument *DocumentHandler::textDocument() const
+{
+    if (!m_document)
+        return nullptr;
+
+    return m_document->textDocument();
+}
+
+void DocumentHandler::mergeFormatOnWordOrSelection(const QTextCharFormat &format)
+{
+    QTextCursor cursor = textCursor();
+    if (!cursor.hasSelection())
+        cursor.select(QTextCursor::WordUnderCursor);
+    cursor.mergeCharFormat(format);
+}
+
+bool DocumentHandler::modified() const
+{
+    return m_document && m_document->textDocument()->isModified();
+}
+
+void DocumentHandler::setModified(bool m)
+{
+    if (m_document)
+        m_document->textDocument()->setModified(m);
+}
+
+QFont DocumentHandler::font() const
+{
+    QTextCursor cursor = textCursor();
+    if (cursor.isNull())
+        return m_document->textDocument()->defaultFont();
+    QTextCharFormat format = cursor.charFormat();
+    return format.font();
+}
+
+void DocumentHandler::setFont(const QFont & font){
+
+    QTextCursor cursor = textCursor();
+    if (!cursor.isNull() && cursor.charFormat().font() == font)
+        return;
+
+    QTextCharFormat format;
+    format.setFont(font);
+    mergeFormatOnWordOrSelection(format);
+
+    emit fontChanged();
+}
+
+bool DocumentHandler::bold() const
+{
+    const QTextCursor cursor = textCursor();
+    if (cursor.isNull())
+        return m_document->textDocument()->defaultFont().bold();
+    return cursor.charFormat().font().bold();
+}
+
+void DocumentHandler::setBold(bool bold)
+{
+    const QTextCursor cursor = textCursor();
+    if (!cursor.isNull() && cursor.charFormat().font().bold() == bold)
+        return;
+
+    QFont font = cursor.charFormat().font();
+    font.setBold(bold);
+    QTextCharFormat format;
+    format.setFont(font);
+    mergeFormatOnWordOrSelection(format);
+
+    emit boldChanged();
+}
+
+bool DocumentHandler::underline() const
+{
+    const QTextCursor cursor = textCursor();
+    if (cursor.isNull())
+        return m_document->textDocument()->defaultFont().underline();
+    return cursor.charFormat().font().underline();
+}
+
+void DocumentHandler::setUnderline(bool underline)
+{
+    const QTextCursor cursor = textCursor();
+    if (!cursor.isNull() && cursor.charFormat().font().underline() == underline)
+        return;
+
+    QFont font = cursor.charFormat().font();
+    font.setUnderline(underline);
+    QTextCharFormat format;
+    format.setFont(font);
+    mergeFormatOnWordOrSelection(format);
+
+    emit underlineChanged();
+}
+
+bool DocumentHandler::italic() const
+{
+    const QTextCursor cursor = textCursor();
+    if (cursor.isNull())
+        return m_document->textDocument()->defaultFont().italic();
+    return cursor.charFormat().font().italic();
+}
+
+void DocumentHandler::setItalic(bool italic)
+{
+    const QTextCursor cursor = textCursor();
+    if (!cursor.isNull() && cursor.charFormat().font().italic() == italic)
+        return;
+
+    QFont font = cursor.charFormat().font();
+    font.setItalic(italic);
+    QTextCharFormat format;
+    format.setFont(font);
+    mergeFormatOnWordOrSelection(format);
+
+    emit italicChanged();
+}
+
+#include "moc_documenthandler.cpp"