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/***************************************************************************
**
** 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 "basetextfind.h"
#include <QtGui/QTextBlock>
using namespace Find;
BaseTextFind::BaseTextFind(QTextEdit *editor)
: m_editor(editor), m_incrementalStartPos(-1)
{
}
BaseTextFind::BaseTextFind(QPlainTextEdit *editor)
: m_plaineditor(editor), m_incrementalStartPos(-1)
{
}
QTextCursor BaseTextFind::textCursor() const
{
Q_ASSERT(m_editor || m_plaineditor);
return m_editor ? m_editor->textCursor() : m_plaineditor->textCursor();
}
void BaseTextFind::setTextCursor(const QTextCursor& cursor)
{
Q_ASSERT(m_editor || m_plaineditor);
m_editor ? m_editor->setTextCursor(cursor) : m_plaineditor->setTextCursor(cursor);
}
QTextDocument *BaseTextFind::document() const
{
Q_ASSERT(m_editor || m_plaineditor);
return m_editor ? m_editor->document() : m_plaineditor->document();
}
bool BaseTextFind::isReadOnly() const
{
Q_ASSERT(m_editor || m_plaineditor);
return m_editor ? m_editor->isReadOnly() : m_plaineditor->isReadOnly();
}
bool BaseTextFind::supportsReplace() const
{
return !isReadOnly();
}
void BaseTextFind::resetIncrementalSearch()
{
m_incrementalStartPos = -1;
}
void BaseTextFind::clearResults()
{
emit highlightAll(QString(), 0);
}
QString BaseTextFind::currentFindString() const
{
QTextCursor cursor = textCursor();
if (cursor.hasSelection() && cursor.block() != cursor.document()->findBlock(cursor.anchor())) {
return QString(); // multi block selection
}
if (cursor.hasSelection())
return cursor.selectedText();
if (!cursor.atBlockEnd() && !cursor.hasSelection()) {
cursor.movePosition(QTextCursor::StartOfWord);
cursor.movePosition(QTextCursor::EndOfWord, QTextCursor::KeepAnchor);
QString s = cursor.selectedText();
foreach(QChar c, s) {
if (!c.isLetterOrNumber() && c != QLatin1Char('_')) {
s.clear();
break;
}
}
return s;
}
return QString();
}
QString BaseTextFind::completedFindString() const
{
QTextCursor cursor = textCursor();
cursor.setPosition(textCursor().selectionStart());
cursor.movePosition(QTextCursor::EndOfWord, QTextCursor::KeepAnchor);
return cursor.selectedText();
}
bool BaseTextFind::findIncremental(const QString &txt, QTextDocument::FindFlags findFlags)
{
QTextCursor cursor = textCursor();
if (m_incrementalStartPos < 0)
m_incrementalStartPos = cursor.selectionStart();
cursor.setPosition(m_incrementalStartPos);
findFlags &= ~QTextDocument::FindBackward;
bool found = find(txt, findFlags, cursor);
if (found)
emit highlightAll(txt, findFlags);
else
emit highlightAll(QString(), 0);
return found;
}
bool BaseTextFind::findStep(const QString &txt, QTextDocument::FindFlags findFlags)
{
bool found = find(txt, findFlags, textCursor());
if (found)
m_incrementalStartPos = textCursor().selectionStart();
return found;
}
bool BaseTextFind::replaceStep(const QString &before, const QString &after,
QTextDocument::FindFlags findFlags)
{
QTextCursor cursor = textCursor();
if (cursor.selectedText().compare(before,
((findFlags&QTextDocument::FindCaseSensitively)!=0) ? Qt::CaseSensitive : Qt::CaseInsensitive) == 0) {
int start = cursor.selectionStart();
cursor.insertText(after);
if ((findFlags&QTextDocument::FindBackward) != 0)
cursor.setPosition(start);
}
return find(before, findFlags, cursor);
}
int BaseTextFind::replaceAll(const QString &before, const QString &after,
QTextDocument::FindFlags findFlags)
{
QTextCursor editCursor = textCursor();
editCursor.movePosition(QTextCursor::Start);
editCursor.beginEditBlock();
int count = 0;
QTextCursor found;
found = document()->find(before, editCursor, findFlags);
while (!found.isNull() && inScope(found.selectionStart(), found.selectionEnd())) {
++count;
editCursor.setPosition(found.selectionStart());
editCursor.setPosition(found.selectionEnd(), QTextCursor::KeepAnchor);
editCursor.insertText(after);
found = document()->find(before, editCursor, findFlags);
}
editCursor.endEditBlock();
return count;
}
bool BaseTextFind::find(const QString &txt,
QTextDocument::FindFlags findFlags,
QTextCursor start)
{
if (txt.isEmpty()) {
setTextCursor(start);
return true;
}
QTextCursor found = document()->find(txt, start, findFlags);
if (!m_findScope.isNull()) {
// scoped
if (found.isNull() || !inScope(found.selectionStart(), found.selectionEnd())) {
if ((findFlags&QTextDocument::FindBackward) == 0)
start.setPosition(m_findScope.selectionStart());
else
start.setPosition(m_findScope.selectionEnd());
found = document()->find(txt, start, findFlags);
if (found.isNull() || !inScope(found.selectionStart(), found.selectionEnd()))
return false;
}
} else {
// entire document
if (found.isNull()) {
if ((findFlags&QTextDocument::FindBackward) == 0)
start.movePosition(QTextCursor::Start);
else
start.movePosition(QTextCursor::End);
found = document()->find(txt, start, findFlags);
if (found.isNull()) {
return false;
}
}
}
if (!found.isNull()) {
setTextCursor(found);
}
return true;
}
bool BaseTextFind::inScope(int startPosition, int endPosition) const
{
if (m_findScope.isNull())
return true;
return (m_findScope.selectionStart() <= startPosition
&& m_findScope.selectionEnd() >= endPosition);
}
void BaseTextFind::defineFindScope()
{
QTextCursor cursor = textCursor();
if (cursor.hasSelection() && cursor.block() != cursor.document()->findBlock(cursor.anchor())) {
m_findScope = cursor;
emit findScopeChanged(m_findScope);
cursor.setPosition(cursor.selectionStart());
setTextCursor(cursor);
} else {
clearFindScope();
}
}
void BaseTextFind::clearFindScope()
{
m_findScope = QTextCursor();
emit findScopeChanged(m_findScope);
}
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