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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 880 insertions, 0 deletions

diff --git a/src/linguist/linguist/messageeditor.cpp b/src/linguist/linguist/messageeditor.cpp
new file mode 100644
index 000000000..3a705c1a7
--- /dev/null
+++ b/src/linguist/linguist/messageeditor.cpp
@@ -0,0 +1,880 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Linguist of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*  TRANSLATOR MessageEditor
+
+  This is the right panel of the main window.
+*/
+
+#include "messageeditor.h"
+#include "messageeditorwidgets.h"
+#include "simtexth.h"
+#include "phrasemodel.h"
+
+#include <QApplication>
+#include <QBoxLayout>
+#include <QClipboard>
+#include <QDebug>
+#include <QDockWidget>
+#include <QHeaderView>
+#include <QKeyEvent>
+#include <QMainWindow>
+#include <QPainter>
+#include <QTreeView>
+#include <QVBoxLayout>
+
+QT_BEGIN_NAMESPACE
+
+#ifdef NEVER_TRUE
+// Allow translators to provide localized names for QLocale::languageToString
+// At least the own language should be translated ... This is a "hack" until
+// functionality is provided within Qt (see task 196275).
+static const char * language_strings[] =
+{
+    QT_TRANSLATE_NOOP("MessageEditor", "Russian"),
+    QT_TRANSLATE_NOOP("MessageEditor", "German"),
+    QT_TRANSLATE_NOOP("MessageEditor", "Japanese"),
+    QT_TRANSLATE_NOOP("MessageEditor", "French"),
+    QT_TRANSLATE_NOOP("MessageEditor", "Polish"),
+    QT_TRANSLATE_NOOP("MessageEditor", "Chinese")
+};
+#endif
+
+/*
+   MessageEditor class impl.
+
+   Handles layout of dock windows and the editor page.
+*/
+MessageEditor::MessageEditor(MultiDataModel *dataModel, QMainWindow *parent)
+    : QScrollArea(parent->centralWidget()),
+      m_dataModel(dataModel),
+      m_currentModel(-1),
+      m_currentNumerus(-1),
+      m_lengthVariants(false),
+      m_undoAvail(false),
+      m_redoAvail(false),
+      m_cutAvail(false),
+      m_copyAvail(false),
+      m_selectionHolder(0),
+      m_focusWidget(0)
+{
+    setObjectName(QLatin1String("scroll area"));
+
+    QPalette p;
+    p.setBrush(QPalette::Window, p.brush(QPalette::Active, QPalette::Base));
+    setPalette(p);
+
+    setupEditorPage();
+
+    // Signals
+    connect(qApp->clipboard(), SIGNAL(dataChanged()),
+            SLOT(clipboardChanged()));
+    connect(m_dataModel, SIGNAL(modelAppended()),
+            SLOT(messageModelAppended()));
+    connect(m_dataModel, SIGNAL(modelDeleted(int)),
+            SLOT(messageModelDeleted(int)));
+    connect(m_dataModel, SIGNAL(allModelsDeleted()),
+            SLOT(allModelsDeleted()));
+    connect(m_dataModel, SIGNAL(languageChanged(int)),
+            SLOT(setTargetLanguage(int)));
+
+    m_tabOrderTimer.setSingleShot(true);
+    connect(&m_tabOrderTimer, SIGNAL(timeout()), SLOT(reallyFixTabOrder()));
+
+    clipboardChanged();
+
+    setWhatsThis(tr("This whole panel allows you to view and edit "
+                    "the translation of some source text."));
+    showNothing();
+}
+
+void MessageEditor::setupEditorPage()
+{
+    QFrame *editorPage = new QFrame;
+    editorPage->setSizePolicy(QSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed));
+
+    m_source = new FormWidget(tr("Source text"), false);
+    m_source->setHideWhenEmpty(true);
+    m_source->setWhatsThis(tr("This area shows the source text."));
+    connect(m_source, SIGNAL(selectionChanged(QTextEdit*)),
+            SLOT(selectionChanged(QTextEdit*)));
+
+    m_pluralSource = new FormWidget(tr("Source text (Plural)"), false);
+    m_pluralSource->setHideWhenEmpty(true);
+    m_pluralSource->setWhatsThis(tr("This area shows the plural form of the source text."));
+    connect(m_pluralSource, SIGNAL(selectionChanged(QTextEdit*)),
+            SLOT(selectionChanged(QTextEdit*)));
+
+    m_commentText = new FormWidget(tr("Developer comments"), false);
+    m_commentText->setHideWhenEmpty(true);
+    m_commentText->setObjectName(QLatin1String("comment/context view"));
+    m_commentText->setWhatsThis(tr("This area shows a comment that"
+                        " may guide you, and the context in which the text"
+                        " occurs.") );
+
+    QBoxLayout *subLayout = new QVBoxLayout;
+
+    subLayout->setMargin(5);
+    subLayout->addWidget(m_source);
+    subLayout->addWidget(m_pluralSource);
+    subLayout->addWidget(m_commentText);
+
+    m_layout = new QVBoxLayout;
+    m_layout->setSpacing(2);
+    m_layout->setMargin(2);
+    m_layout->addLayout(subLayout);
+    m_layout->addStretch(1);
+    editorPage->setLayout(m_layout);
+
+    setWidget(editorPage);
+    setWidgetResizable(true);
+}
+
+QPalette MessageEditor::paletteForModel(int model) const
+{
+    QBrush brush = m_dataModel->brushForModel(model);
+    QPalette pal;
+
+    if (m_dataModel->isModelWritable(model)) {
+        pal.setBrush(QPalette::Window, brush);
+    } else {
+        QPixmap pm(brush.texture().size());
+        pm.fill();
+        QPainter p(&pm);
+        p.fillRect(brush.texture().rect(), brush);
+        pal.setBrush(QPalette::Window, pm);
+    }
+    return pal;
+}
+
+void MessageEditor::messageModelAppended()
+{
+    int model = m_editors.size();
+    m_editors.append(MessageEditorData());
+    MessageEditorData &ed = m_editors.last();
+    ed.pluralEditMode = false;
+    ed.fontSize = font().pointSize();
+    ed.container = new QWidget;
+    if (model > 0) {
+        ed.container->setPalette(paletteForModel(model));
+        ed.container->setAutoFillBackground(true);
+        if (model == 1) {
+            m_editors[0].container->setPalette(paletteForModel(0));
+            m_editors[0].container->setAutoFillBackground(true);
+        }
+    }
+    bool writable = m_dataModel->isModelWritable(model);
+    ed.transCommentText = new FormWidget(QString(), true);
+    ed.transCommentText->setEditingEnabled(writable);
+    ed.transCommentText->setHideWhenEmpty(!writable);
+    ed.transCommentText->setWhatsThis(tr("Here you can enter comments for your own use."
+                        " They have no effect on the translated applications.") );
+    ed.transCommentText->getEditor()->installEventFilter(this);
+    connect(ed.transCommentText, SIGNAL(selectionChanged(QTextEdit*)),
+            SLOT(selectionChanged(QTextEdit*)));
+    connect(ed.transCommentText, SIGNAL(textChanged(QTextEdit*)),
+            SLOT(emitTranslatorCommentChanged(QTextEdit*)));
+    connect(ed.transCommentText, SIGNAL(textChanged(QTextEdit*)), SLOT(resetHoverSelection()));
+    connect(ed.transCommentText, SIGNAL(cursorPositionChanged()), SLOT(resetHoverSelection()));
+    fixTabOrder();
+    QBoxLayout *box = new QVBoxLayout(ed.container);
+    box->setMargin(5);
+    box->addWidget(ed.transCommentText);
+    box->addSpacing(ed.transCommentText->getEditor()->fontMetrics().height() / 2);
+    m_layout->addWidget(ed.container);
+    setTargetLanguage(model);
+}
+
+void MessageEditor::allModelsDeleted()
+{
+    foreach (const MessageEditorData &med, m_editors)
+        med.container->deleteLater();
+    m_editors.clear();
+    m_currentModel = -1;
+    // Do not emit activeModelChanged() - the main window will refresh anyway
+    m_currentNumerus = -1;
+    showNothing();
+}
+
+void MessageEditor::messageModelDeleted(int model)
+{
+    m_editors[model].container->deleteLater();
+    m_editors.removeAt(model);
+    if (model <= m_currentModel) {
+        if (model < m_currentModel || m_currentModel == m_editors.size())
+            --m_currentModel;
+        // Do not emit activeModelChanged() - the main window will refresh anyway
+        if (m_currentModel >= 0) {
+            if (m_currentNumerus >= m_editors[m_currentModel].transTexts.size())
+                m_currentNumerus = m_editors[m_currentModel].transTexts.size() - 1;
+            activeEditor()->setFocus();
+        } else {
+            m_currentNumerus = -1;
+        }
+    }
+    if (m_editors.size() == 1) {
+        m_editors[0].container->setAutoFillBackground(false);
+    } else {
+        for (int i = model; i < m_editors.size(); ++i)
+            m_editors[i].container->setPalette(paletteForModel(i));
+    }
+}
+
+void MessageEditor::addPluralForm(int model, const QString &label, bool writable)
+{
+    FormMultiWidget *transEditor = new FormMultiWidget(label);
+    connect(transEditor, SIGNAL(editorCreated(QTextEdit*)), SLOT(editorCreated(QTextEdit*)));
+    transEditor->setEditingEnabled(writable);
+    transEditor->setHideWhenEmpty(!writable);
+    if (!m_editors[model].transTexts.isEmpty())
+        transEditor->setVisible(false);
+    transEditor->setMultiEnabled(m_lengthVariants);
+    static_cast<QBoxLayout *>(m_editors[model].container->layout())->insertWidget(
+        m_editors[model].transTexts.count(), transEditor);
+
+    connect(transEditor, SIGNAL(selectionChanged(QTextEdit*)),
+            SLOT(selectionChanged(QTextEdit*)));
+    connect(transEditor, SIGNAL(textChanged(QTextEdit*)),
+            SLOT(emitTranslationChanged(QTextEdit*)));
+    connect(transEditor, SIGNAL(textChanged(QTextEdit*)), SLOT(resetHoverSelection()));
+    connect(transEditor, SIGNAL(cursorPositionChanged()), SLOT(resetHoverSelection()));
+
+    m_editors[model].transTexts << transEditor;
+}
+
+void MessageEditor::editorCreated(QTextEdit *te)
+{
+    FormMultiWidget *snd = static_cast<FormMultiWidget *>(sender());
+    for (int model = 0; ; ++model) {
+        MessageEditorData med = m_editors.at(model);
+        if (med.transTexts.contains(snd)) {
+            QFont font;
+            font.setPointSize(static_cast<int>(med.fontSize));
+            te->setFont(font);
+
+            te->installEventFilter(this);
+
+            fixTabOrder();
+            return;
+        }
+    }
+}
+
+void MessageEditor::fixTabOrder()
+{
+    m_tabOrderTimer.start(0);
+}
+
+void MessageEditor::reallyFixTabOrder()
+{
+    QWidget *prev = this;
+    foreach (const MessageEditorData &med, m_editors) {
+        foreach (FormMultiWidget *fmw, med.transTexts)
+            foreach (QTextEdit *te, fmw->getEditors()) {
+                setTabOrder(prev, te);
+                prev = te;
+            }
+        QTextEdit *te = med.transCommentText->getEditor();
+        setTabOrder(prev, te);
+        prev = te;
+    }
+}
+
+/*! internal
+    Returns all translations for an item.
+    The number of translations is dependent on if we have a plural form or not.
+    If we don't have a plural form, then this should only contain one item.
+    Otherwise it will contain the number of numerus forms for the particular language.
+*/
+QStringList MessageEditor::translations(int model) const
+{
+    QStringList translations;
+    for (int i = 0; i < m_editors[model].transTexts.count() &&
+                    m_editors[model].transTexts.at(i)->isVisible(); ++i)
+        translations << m_editors[model].transTexts[i]->getTranslation();
+    return translations;
+}
+
+static void clearSelection(QTextEdit *t)
+{
+    bool oldBlockState = t->blockSignals(true);
+    QTextCursor c = t->textCursor();
+    c.clearSelection();
+    t->setTextCursor(c);
+    t->blockSignals(oldBlockState);
+}
+
+void MessageEditor::selectionChanged(QTextEdit *te)
+{
+    if (te != m_selectionHolder) {
+        if (m_selectionHolder)
+            clearSelection(m_selectionHolder);
+        m_selectionHolder = (te->textCursor().hasSelection() ? te : 0);
+        updateCanCutCopy();
+    }
+}
+
+void MessageEditor::resetHoverSelection()
+{
+    if (m_selectionHolder &&
+        (m_selectionHolder == m_source->getEditor()
+         || m_selectionHolder == m_pluralSource->getEditor()))
+        resetSelection();
+}
+
+void MessageEditor::resetSelection()
+{
+    if (m_selectionHolder) {
+        clearSelection(m_selectionHolder);
+        m_selectionHolder = 0;
+        updateCanCutCopy();
+    }
+}
+
+void MessageEditor::activeModelAndNumerus(int *model, int *numerus) const
+{
+    for (int j = 0; j < m_editors.count(); ++j) {
+        for (int i = 0; i < m_editors[j].transTexts.count(); ++i)
+            foreach (QTextEdit *te, m_editors[j].transTexts[i]->getEditors())
+                if (m_focusWidget == te) {
+                    *model = j;
+                    *numerus = i;
+                    return;
+                }
+        if (m_focusWidget == m_editors[j].transCommentText->getEditor()) {
+            *model = j;
+            *numerus = -1;
+            return;
+        }
+    }
+    *model = -1;
+    *numerus = -1;
+}
+
+QTextEdit *MessageEditor::activeTranslation() const
+{
+    if (m_currentNumerus < 0)
+        return 0;
+    const QList<FormatTextEdit *> &editors =
+            m_editors[m_currentModel].transTexts[m_currentNumerus]->getEditors();
+    foreach (QTextEdit *te, editors)
+        if (te->hasFocus())
+            return te;
+    return editors.first();
+}
+
+QTextEdit *MessageEditor::activeOr1stTranslation() const
+{
+    if (m_currentNumerus < 0) {
+        for (int i = 0; i < m_editors.size(); ++i)
+            if (m_editors[i].container->isVisible()
+                && !m_editors[i].transTexts.first()->getEditors().first()->isReadOnly())
+                return m_editors[i].transTexts.first()->getEditors().first();
+        return 0;
+    }
+    return activeTranslation();
+}
+
+QTextEdit *MessageEditor::activeTransComment() const
+{
+    if (m_currentModel < 0 || m_currentNumerus >= 0)
+        return 0;
+    return m_editors[m_currentModel].transCommentText->getEditor();
+}
+
+QTextEdit *MessageEditor::activeEditor() const
+{
+    if (QTextEdit *te = activeTransComment())
+        return te;
+    return activeTranslation();
+}
+
+QTextEdit *MessageEditor::activeOr1stEditor() const
+{
+    if (QTextEdit *te = activeTransComment())
+        return te;
+    return activeOr1stTranslation();
+}
+
+void MessageEditor::setTargetLanguage(int model)
+{
+    const QStringList &numerusForms = m_dataModel->model(model)->numerusForms();
+    const QString &langLocalized = m_dataModel->model(model)->localizedLanguage();
+    for (int i = 0; i < numerusForms.count(); ++i) {
+        const QString &label = tr("%1 translation (%2)").arg(langLocalized, numerusForms[i]);
+        if (!i)
+            m_editors[model].firstForm = label;
+        if (i >= m_editors[model].transTexts.count())
+            addPluralForm(model, label, m_dataModel->isModelWritable(model));
+        else
+            m_editors[model].transTexts[i]->setLabel(label);
+        m_editors[model].transTexts[i]->setVisible(!i || m_editors[model].pluralEditMode);
+        m_editors[model].transTexts[i]->setWhatsThis(
+                tr("This is where you can enter or modify"
+                   " the translation of the above source text.") );
+    }
+    for (int j = m_editors[model].transTexts.count() - numerusForms.count(); j > 0; --j)
+        delete m_editors[model].transTexts.takeLast();
+    m_editors[model].invariantForm = tr("%1 translation").arg(langLocalized);
+    m_editors[model].transCommentText->setLabel(tr("%1 translator comments").arg(langLocalized));
+}
+
+MessageEditorData *MessageEditor::modelForWidget(const QObject *o)
+{
+    for (int j = 0; j < m_editors.count(); ++j) {
+        for (int i = 0; i < m_editors[j].transTexts.count(); ++i)
+            foreach (QTextEdit *te, m_editors[j].transTexts[i]->getEditors())
+                if (te == o)
+                    return &m_editors[j];
+        if (m_editors[j].transCommentText->getEditor() == o)
+            return &m_editors[j];
+    }
+    return 0;
+}
+
+static bool applyFont(MessageEditorData *med)
+{
+    QFont font;
+    font.setPointSize(static_cast<int>(med->fontSize));
+    for (int i = 0; i < med->transTexts.count(); ++i)
+        foreach (QTextEdit *te, med->transTexts[i]->getEditors())
+            te->setFont(font);
+    med->transCommentText->getEditor()->setFont(font);
+    return true;
+}
+
+static bool incFont(MessageEditorData *med)
+{
+    if (!med || med->fontSize >= 32)
+        return true;
+    med->fontSize *= 1.2;
+    return applyFont(med);
+}
+
+static bool decFont(MessageEditorData *med)
+{
+    if (!med || med->fontSize <= 8)
+        return true;
+    med->fontSize /= 1.2;
+    return applyFont(med);
+}
+
+bool MessageEditor::eventFilter(QObject *o, QEvent *e)
+{
+    // handle copying from the source
+    if (e->type() == QEvent::ShortcutOverride) {
+        QKeyEvent *ke = static_cast<QKeyEvent *>(e);
+
+        if (ke->modifiers() & Qt::ControlModifier) {
+            if (ke->key() == Qt::Key_C) {
+                if (m_source->getEditor()->textCursor().hasSelection()) {
+                    m_source->getEditor()->copy();
+                    return true;
+                }
+                if (m_pluralSource->getEditor()->textCursor().hasSelection()) {
+                    m_pluralSource->getEditor()->copy();
+                    return true;
+                }
+            } else if (ke->key() == Qt::Key_A) {
+                return true;
+            }
+        }
+    } else if (e->type() == QEvent::KeyPress) {
+        QKeyEvent *ke = static_cast<QKeyEvent *>(e);
+        if (ke->modifiers() & Qt::ControlModifier) {
+            if (ke->key() == Qt::Key_Plus || ke->key() == Qt::Key_Equal)
+                return incFont(modelForWidget(o));
+            if (ke->key() == Qt::Key_Minus)
+                return decFont(modelForWidget(o));
+        } else {
+            // Ctrl-Tab is still passed through to the textedit and causes a tab to be inserted.
+            if (ke->key() == Qt::Key_Tab) {
+                focusNextChild();
+                return true;
+            }
+        }
+    } else if (e->type() == QEvent::Wheel) {
+        QWheelEvent *we = static_cast<QWheelEvent *>(e);
+        if (we->modifiers() & Qt::ControlModifier) {
+            if (we->delta() > 0)
+                return incFont(modelForWidget(o));
+            return decFont(modelForWidget(o));
+        }
+    } else if (e->type() == QEvent::FocusIn) {
+        QWidget *widget = static_cast<QWidget *>(o);
+        if (widget != m_focusWidget)
+            trackFocus(widget);
+    }
+
+    return QScrollArea::eventFilter(o, e);
+}
+
+void MessageEditor::grabFocus(QWidget *widget)
+{
+    if (widget != m_focusWidget) {
+        widget->setFocus();
+        trackFocus(widget);
+    }
+}
+
+void MessageEditor::trackFocus(QWidget *widget)
+{
+    m_focusWidget = widget;
+
+    int model, numerus;
+    activeModelAndNumerus(&model, &numerus);
+    if (model != m_currentModel || numerus != m_currentNumerus) {
+        resetSelection();
+        m_currentModel = model;
+        m_currentNumerus = numerus;
+        emit activeModelChanged(activeModel());
+        updateBeginFromSource();
+        updateUndoRedo();
+        updateCanPaste();
+    }
+}
+
+void MessageEditor::showNothing()
+{
+    m_source->clearTranslation();
+    m_pluralSource->clearTranslation();
+    m_commentText->clearTranslation();
+    for (int j = 0; j < m_editors.count(); ++j) {
+        setEditingEnabled(j, false);
+        foreach (FormMultiWidget *widget, m_editors[j].transTexts)
+            widget->clearTranslation();
+        m_editors[j].transCommentText->clearTranslation();
+    }
+    emit pasteAvailable(false);
+    updateBeginFromSource();
+    updateUndoRedo();
+}
+
+void MessageEditor::showMessage(const MultiDataIndex &index)
+{
+    m_currentIndex = index;
+
+    bool hadMsg = false;
+    for (int j = 0; j < m_editors.size(); ++j) {
+
+        MessageEditorData &ed = m_editors[j];
+
+        MessageItem *item = m_dataModel->messageItem(index, j);
+        if (!item) {
+            ed.container->hide();
+            continue;
+        }
+        ed.container->show();
+
+        if (!hadMsg) {
+
+            // Source text form
+            m_source->setTranslation(item->text());
+            m_pluralSource->setTranslation(item->pluralText());
+            // Use location from first non-obsolete message
+            if (!item->fileName().isEmpty()) {
+                QString toolTip = tr("'%1'\nLine: %2").arg(item->fileName(), QString::number(item->lineNumber()));
+                m_source->setToolTip(toolTip);
+            } else {
+                m_source->setToolTip(QLatin1String(""));
+            }
+
+            // Comment field
+            QString commentText = item->comment().simplified();
+
+            if (!item->extraComment().isEmpty()) {
+                if (!commentText.isEmpty())
+                    commentText += QLatin1String("\n");
+                commentText += item->extraComment().simplified();
+            }
+
+            m_commentText->setTranslation(commentText);
+
+            hadMsg = true;
+        }
+
+        setEditingEnabled(j, m_dataModel->isModelWritable(j)
+                             && item->message().type() != TranslatorMessage::Obsolete);
+
+        // Translation label
+        ed.pluralEditMode = item->translations().count() > 1;
+        ed.transTexts.first()->setLabel(ed.pluralEditMode ? ed.firstForm : ed.invariantForm);
+
+        // Translation forms
+        if (item->text().isEmpty() && !item->context().isEmpty()) {
+            for (int i = 0; i < ed.transTexts.size(); ++i)
+                ed.transTexts.at(i)->setVisible(false);
+        } else {
+            QStringList normalizedTranslations =
+                m_dataModel->model(j)->normalizedTranslations(*item);
+            for (int i = 0; i < ed.transTexts.size(); ++i) {
+                bool shouldShow = (i < normalizedTranslations.count());
+                if (shouldShow)
+                    setTranslation(j, normalizedTranslations.at(i), i);
+                else
+                    setTranslation(j, QString(), i);
+                ed.transTexts.at(i)->setVisible(i == 0 || shouldShow);
+            }
+        }
+
+        ed.transCommentText->setTranslation(item->translatorComment().trimmed(), false);
+    }
+
+    updateUndoRedo();
+}
+
+void MessageEditor::setTranslation(int model, const QString &translation, int numerus)
+{
+    MessageEditorData &ed = m_editors[model];
+    if (numerus >= ed.transTexts.count())
+        numerus = 0;
+    FormMultiWidget *transForm = ed.transTexts[numerus];
+    transForm->setTranslation(translation, false);
+
+    updateBeginFromSource();
+}
+
+void MessageEditor::setTranslation(int latestModel, const QString &translation)
+{
+    int numerus;
+    if (m_currentNumerus < 0) {
+        numerus = 0;
+    } else {
+        latestModel = m_currentModel;
+        numerus = m_currentNumerus;
+    }
+    FormMultiWidget *transForm = m_editors[latestModel].transTexts[numerus];
+    transForm->getEditors().first()->setFocus();
+    transForm->setTranslation(translation, true);
+
+    updateBeginFromSource();
+}
+
+void MessageEditor::setEditingEnabled(int model, bool enabled)
+{
+    MessageEditorData &ed = m_editors[model];
+    foreach (FormMultiWidget *widget, ed.transTexts)
+        widget->setEditingEnabled(enabled);
+    ed.transCommentText->setEditingEnabled(enabled);
+
+    updateCanPaste();
+}
+
+void MessageEditor::setLengthVariants(bool on)
+{
+    m_lengthVariants = on;
+    foreach (const MessageEditorData &ed, m_editors)
+        foreach (FormMultiWidget *widget, ed.transTexts)
+            widget->setMultiEnabled(on);
+}
+
+void MessageEditor::undo()
+{
+    activeEditor()->document()->undo();
+}
+
+void MessageEditor::redo()
+{
+    activeEditor()->document()->redo();
+}
+
+void MessageEditor::updateUndoRedo()
+{
+    bool newUndoAvail = false;
+    bool newRedoAvail = false;
+    if (QTextEdit *te = activeEditor()) {
+        QTextDocument *doc = te->document();
+        newUndoAvail = doc->isUndoAvailable();
+        newRedoAvail = doc->isRedoAvailable();
+    }
+
+    if (newUndoAvail != m_undoAvail) {
+        m_undoAvail = newUndoAvail;
+        emit undoAvailable(newUndoAvail);
+    }
+
+    if (newRedoAvail != m_redoAvail) {
+        m_redoAvail = newRedoAvail;
+        emit redoAvailable(newRedoAvail);
+    }
+}
+
+void MessageEditor::cut()
+{
+    m_selectionHolder->cut();
+}
+
+void MessageEditor::copy()
+{
+    m_selectionHolder->copy();
+}
+
+void MessageEditor::updateCanCutCopy()
+{
+    bool newCopyState = false;
+    bool newCutState = false;
+
+    if (m_selectionHolder) {
+        newCopyState = true;
+        newCutState = !m_selectionHolder->isReadOnly();
+    }
+
+    if (newCopyState != m_copyAvail) {
+        m_copyAvail = newCopyState;
+        emit copyAvailable(m_copyAvail);
+    }
+
+    if (newCutState != m_cutAvail) {
+        m_cutAvail = newCutState;
+        emit cutAvailable(m_cutAvail);
+    }
+}
+
+void MessageEditor::paste()
+{
+    activeEditor()->paste();
+}
+
+void MessageEditor::updateCanPaste()
+{
+    QTextEdit *te;
+    emit pasteAvailable(!m_clipboardEmpty
+                        && (te = activeEditor()) && !te->isReadOnly());
+}
+
+void MessageEditor::clipboardChanged()
+{
+    // this is expensive, so move it out of the common path in updateCanPaste
+    m_clipboardEmpty = qApp->clipboard()->text().isNull();
+    updateCanPaste();
+}
+
+void MessageEditor::selectAll()
+{
+    // make sure we don't select the selection of a translator textedit,
+    // if we really want the source text editor to be selected.
+    QTextEdit *te;
+    if ((te = m_source->getEditor())->underMouse()
+        || (te = m_pluralSource->getEditor())->underMouse()
+        || ((te = activeEditor()) && te->hasFocus()))
+        te->selectAll();
+}
+
+void MessageEditor::emitTranslationChanged(QTextEdit *widget)
+{
+    grabFocus(widget); // DND proofness
+    updateBeginFromSource();
+    updateUndoRedo();
+    emit translationChanged(translations(m_currentModel));
+}
+
+void MessageEditor::emitTranslatorCommentChanged(QTextEdit *widget)
+{
+    grabFocus(widget); // DND proofness
+    updateUndoRedo();
+    emit translatorCommentChanged(m_editors[m_currentModel].transCommentText->getTranslation());
+}
+
+void MessageEditor::updateBeginFromSource()
+{
+    bool overwrite = false;
+    if (QTextEdit *activeEditor = activeTranslation())
+        overwrite = !activeEditor->isReadOnly()
+            && activeEditor->toPlainText().trimmed().isEmpty();
+    emit beginFromSourceAvailable(overwrite);
+}
+
+void MessageEditor::beginFromSource()
+{
+    MessageItem *item = m_dataModel->messageItem(m_currentIndex, m_currentModel);
+    setTranslation(m_currentModel,
+                   m_currentNumerus > 0 && !item->pluralText().isEmpty() ?
+                        item->pluralText() : item->text());
+}
+
+void MessageEditor::setEditorFocus()
+{
+    if (!widget()->hasFocus())
+        if (QTextEdit *activeEditor = activeOr1stEditor())
+            activeEditor->setFocus();
+}
+
+void MessageEditor::setEditorFocus(int model)
+{
+    if (m_currentModel != model) {
+        if (model < 0) {
+            resetSelection();
+            m_currentNumerus = -1;
+            m_currentModel = -1;
+            m_focusWidget = 0;
+            emit activeModelChanged(activeModel());
+            updateBeginFromSource();
+            updateUndoRedo();
+            updateCanPaste();
+        } else {
+            m_editors[model].transTexts.first()->getEditors().first()->setFocus();
+        }
+    }
+}
+
+bool MessageEditor::focusNextUnfinished(int start)
+{
+    for (int j = start; j < m_editors.count(); ++j)
+        if (m_dataModel->isModelWritable(j))
+            if (MessageItem *item = m_dataModel->messageItem(m_currentIndex, j))
+                if (item->type() == TranslatorMessage::Unfinished) {
+                    m_editors[j].transTexts.first()->getEditors().first()->setFocus();
+                    return true;
+                }
+    return false;
+}
+
+void MessageEditor::setUnfinishedEditorFocus()
+{
+    focusNextUnfinished(0);
+}
+
+bool MessageEditor::focusNextUnfinished()
+{
+    return focusNextUnfinished(m_currentModel + 1);
+}
+
+QT_END_NAMESPACE