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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the tools applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "textcursor.h"
#include "textdocument.h"
#include "textblock.h"
namespace Utils {
class TextFrame;
class TextTable;
class TextTableCell;
TextCursor::TextCursor(TextDocument *document) : m_document(document) { }
bool TextCursor::movePosition(TextCursor::MoveOperation op, TextCursor::MoveMode mode, int n)
{
Q_UNUSED(n);
switch (op) {
case NoMove:
return true;
case Start:
m_position = 0;
break;
case PreviousCharacter:
while (--n >= 0) {
if (m_position == 0)
return false;
--m_position;
}
break;
case End:
m_position = m_document->characterCount();
break;
case NextCharacter:
while (--n >= 0) {
if (m_position == m_document->characterCount())
return false;
++m_position;
}
break;
}
if (mode == MoveAnchor)
m_anchor = m_position;
return false;
}
int TextCursor::position() const
{
return m_position;
}
void TextCursor::setPosition(int pos, Utils::TextCursor::MoveMode mode)
{
m_position = pos;
if (mode == MoveAnchor)
m_anchor = pos;
}
QString TextCursor::selectedText() const
{
return m_document->toPlainText().mid(qMin(m_position, m_anchor), qAbs(m_position - m_anchor));
}
void TextCursor::clearSelection()
{
m_anchor = m_position;
}
TextDocument *TextCursor::document() const
{
return m_document;
}
void TextCursor::insertText(const QString &text)
{
const QString orig = m_document->toPlainText();
const QString left = orig.left(qMin(m_position, m_anchor));
const QString right = orig.mid(qMax(m_position, m_anchor));
m_document->setPlainText(left + text + right);
}
TextBlock TextCursor::block() const
{
TextBlock current = m_document->firstBlock();
while (current.isValid()) {
if (current.position() <= position()
&& current.position() + current.length() > current.position())
break;
current = current.next();
}
return current;
}
int TextCursor::positionInBlock() const
{
return m_position - block().position();
}
int TextCursor::blockNumber() const
{
return block().blockNumber();
}
void TextCursor::removeSelectedText()
{
insertText(QString());
}
int TextCursor::selectionEnd() const
{
return qMax(m_position, m_anchor);
}
bool TextCursor::isNull() const
{
return m_document == nullptr;
}
}
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