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#include "texteditor.h"
#include "utility.h"
#include <QSplitter>
TextEditor::TextEditor(QPlainTextEdit* edit)
: m_edit(edit), m_toolbar(*this), m_dirty(false)
{
setupToolbar();
m_edit->setFont(QFontDatabase::systemFont(QFontDatabase::FixedFont));
wordWrap(true);
emit modified(false);
QObject::connect(
m_edit->document(), &QTextDocument::modificationChanged,
[&](bool b){ onModified(b); });
}
bool TextEditor::load(const QString& filename)
{
m_filename = filename;
m_edit->setPlainText(MOBase::readFileText(filename, &m_encoding));
m_edit->document()->setModified(false);
return true;
}
bool TextEditor::save()
{
if (m_filename.isEmpty() || m_encoding.isEmpty()) {
return false;
}
QFile file(m_filename);
file.open(QIODevice::WriteOnly);
file.resize(0);
QTextCodec* codec = QTextCodec::codecForName(m_encoding.toUtf8());
QString data = m_edit->toPlainText().replace("\n", "\r\n");
file.write(codec->fromUnicode(data));
m_edit->document()->setModified(false);
return true;
}
const QString& TextEditor::filename() const
{
return m_filename;
}
void TextEditor::wordWrap(bool b)
{
if (b) {
m_edit->setLineWrapMode(QPlainTextEdit::WidgetWidth);
} else {
m_edit->setLineWrapMode(QPlainTextEdit::NoWrap);
}
emit wordWrapChanged(b);
}
void TextEditor::toggleWordWrap()
{
wordWrap(!wordWrap());
}
bool TextEditor::wordWrap() const
{
return (m_edit->lineWrapMode() == QPlainTextEdit::WidgetWidth);
}
void TextEditor::dirty(bool b)
{
m_dirty = b;
}
bool TextEditor::dirty() const
{
return m_dirty;
}
void TextEditor::onModified(bool b)
{
dirty(b);
emit modified(b);
}
void TextEditor::setupToolbar()
{
auto* widget = wrapEditWidget();
if (!widget) {
return;
}
auto* layout = new QVBoxLayout(widget);
// adding toolbar and edit
layout->addWidget(m_toolbar.widget());
layout->addWidget(m_edit);
// make the edit stretch
layout->setStretch(0, 0);
layout->setStretch(1, 1);
// visuals
layout->setContentsMargins(0, 0, 0, 0);
widget->show();
}
QWidget* TextEditor::wrapEditWidget()
{
auto widget = std::make_unique<QWidget>();
// wrapping the QPlainTextEdit into a new widget so the toolbar can be
// displayed above it
if (auto* parentLayout=m_edit->parentWidget()->layout()) {
// the edit's parent has a regular layout, replace the edit by the new
// widget and delete the QLayoutItem that's returned as it's not needed
delete parentLayout->replaceWidget(m_edit, widget.get());
} else if (auto* splitter=qobject_cast<QSplitter*>(m_edit->parentWidget())) {
// the edit's parent is a QSplitter, which doesn't have a layout; replace
// the edit by using its index in the splitter
splitter->replaceWidget(splitter->indexOf(m_edit), widget.get());
} else {
// unknown parent
qCritical("TextEditor: cannot wrap edit widget to display a toolbar");
return nullptr;
}
return widget.release();
}
TextEditorToolbar::TextEditorToolbar(TextEditor& editor) :
m_editor(editor),
m_widget(new QWidget),
m_save(new QAction(QObject::tr("&Save"))),
m_wordWrap(new QAction(QObject::tr("&Word wrap")))
{
QObject::connect(m_save, &QAction::triggered, [&]{ m_editor.save(); });
m_wordWrap->setCheckable(true);
QObject::connect(m_wordWrap, &QAction::triggered, [&]{ m_editor.toggleWordWrap(); });
auto* layout = new QHBoxLayout(m_widget);
layout->setContentsMargins(0, 0, 0, 0);
layout->setAlignment(Qt::AlignLeft);
auto* b = new QToolButton;
b->setDefaultAction(m_save);
layout->addWidget(b);
b = new QToolButton;
b->setDefaultAction(m_wordWrap);
layout->addWidget(b);
QObject::connect(&m_editor, &TextEditor::modified, [&](bool b){ onTextModified(b); });
QObject::connect(&m_editor, &TextEditor::wordWrapChanged, [&](bool b){ onWordWrap(b); });
}
QWidget* TextEditorToolbar::widget()
{
return m_widget;
}
void TextEditorToolbar::onTextModified(bool b)
{
m_save->setEnabled(b);
}
void TextEditorToolbar::onWordWrap(bool b)
{
m_wordWrap->setChecked(b);
}
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