/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
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** 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
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****************************************************************************/

#include "basetexteditmodifier.h"

#include <qmljs/qmljsmodelmanagerinterface.h>
#include <qmljseditor/qmljseditordocument.h>
#include <texteditor/tabsettings.h>
#include <utils/changeset.h>

using namespace QmlDesigner;

BaseTextEditModifier::BaseTextEditModifier(TextEditor::BaseTextEditorWidget *textEdit):
        PlainTextEditModifier(textEdit)
{
}

void BaseTextEditModifier::indent(int offset, int length)
{
    if (length == 0 || offset < 0 || offset + length >= text().length())
        return;

    if (TextEditor::BaseTextEditorWidget *bte = qobject_cast<TextEditor::BaseTextEditorWidget*>(plainTextEdit())) {
        TextEditor::BaseTextDocument *btd = bte->baseTextDocument();
        // find the applicable block:
        QTextDocument *doc = btd->document();
        QTextCursor tc(doc);
        tc.beginEditBlock();
        tc.setPosition(offset);
        tc.setPosition(offset + length, QTextCursor::KeepAnchor);
        btd->autoIndent(tc);
        tc.endEditBlock();
    }
}

int BaseTextEditModifier::indentDepth() const
{
    if (TextEditor::BaseTextEditorWidget *bte = qobject_cast<TextEditor::BaseTextEditorWidget*>(plainTextEdit()))
        return bte->baseTextDocument()->tabSettings().m_indentSize;
    else
        return 0;
}

bool BaseTextEditModifier::renameId(const QString &oldId, const QString &newId)
{
    if (TextEditor::BaseTextEditorWidget *bte = qobject_cast<TextEditor::BaseTextEditorWidget*>(plainTextEdit())) {
        if (QmlJSEditor::QmlJSEditorDocument *document
                = qobject_cast<QmlJSEditor::QmlJSEditorDocument *>(bte->baseTextDocument())) {
            Utils::ChangeSet changeSet;
            foreach (const QmlJS::AST::SourceLocation &loc,
                    document->semanticInfo().idLocations.value(oldId)) {
                changeSet.replace(loc.begin(), loc.end(), newId);
            }
            QTextCursor tc = bte->textCursor();
            changeSet.apply(&tc);
            return true;
        }
    }
    return false;
}

QmlJS::Snapshot BaseTextEditModifier::getSnapshot() const
{
    QmlJS::ModelManagerInterface *modelManager = QmlJS::ModelManagerInterface::instance();
    if (modelManager)
        return modelManager->snapshot();
    else
        return QmlJS::Snapshot();
}

QStringList BaseTextEditModifier::importPaths() const
{
    QmlJS::ModelManagerInterface *modelManager = QmlJS::ModelManagerInterface::instance();
    if (modelManager)
        return modelManager->importPaths();
    else
        return QStringList();
}
