/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
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**
**
** GNU Lesser General Public License Usage
**
** 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:
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**
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** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
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#include "qmljsrefactoringchanges.h"
#include "qmljsqtstylecodeformatter.h"
#include "qmljstoolsconstants.h"

#include <qmljs/parser/qmljsast_p.h>
#include <qmljs/qmljsmodelmanagerinterface.h>
#include <texteditor/texteditorsettings.h>
#include <texteditor/tabsettings.h>
#include <projectexplorer/editorconfiguration.h>

using namespace QmlJS;
using namespace QmlJSTools;

QmlJSRefactoringChanges::QmlJSRefactoringChanges(ModelManagerInterface *modelManager,
                                                 const Snapshot &snapshot)
    : m_modelManager(modelManager)
    , m_snapshot(snapshot)
{
    Q_ASSERT(modelManager);
}

const Snapshot &QmlJSRefactoringChanges::snapshot() const
{
    return m_snapshot;
}

QmlJSRefactoringFile QmlJSRefactoringChanges::file(const QString &fileName)
{
    return QmlJSRefactoringFile(fileName, this);
}

void QmlJSRefactoringChanges::indentSelection(const QTextCursor &selection,
                                              const QString &fileName,
                                              const TextEditor::BaseTextEditorWidget *textEditor) const
{
    // ### shares code with QmlJSTextEditor::indent
    QTextDocument *doc = selection.document();

    QTextBlock block = doc->findBlock(selection.selectionStart());
    const QTextBlock end = doc->findBlock(selection.selectionEnd()).next();

    const TextEditor::TabSettings &tabSettings =
        ProjectExplorer::actualTabSettings(fileName, textEditor);
    QtStyleCodeFormatter codeFormatter(tabSettings);
    codeFormatter.updateStateUntil(block);

    do {
        tabSettings.indentLine(block, codeFormatter.indentFor(block));
        codeFormatter.updateLineStateChange(block);
        block = block.next();
    } while (block.isValid() && block != end);
}

void QmlJSRefactoringChanges::fileChanged(const QString &fileName)
{
    m_modelManager->updateSourceFiles(QStringList(fileName), true);
}


QmlJSRefactoringFile::QmlJSRefactoringFile()
{ }

QmlJSRefactoringFile::QmlJSRefactoringFile(const QString &fileName, QmlJSRefactoringChanges *refactoringChanges)
    : RefactoringFile(fileName, refactoringChanges)
{ }

QmlJSRefactoringFile::QmlJSRefactoringFile(TextEditor::BaseTextEditorWidget *editor, QmlJS::Document::Ptr document)
    : RefactoringFile()
    , m_qmljsDocument(document)
{
    m_fileName = document->fileName();
    m_editor = editor;
}

Document::Ptr QmlJSRefactoringFile::qmljsDocument() const
{
    if (!m_qmljsDocument) {
        const QString source = document()->toPlainText();
        const QString name = fileName();
        const Snapshot &snapshot = refactoringChanges()->snapshot();

        m_qmljsDocument = snapshot.documentFromSource(source, name);
        m_qmljsDocument->parse();
    }

    return m_qmljsDocument;
}

unsigned QmlJSRefactoringFile::startOf(const AST::SourceLocation &loc) const
{
    return position(loc.startLine, loc.startColumn);
}

bool QmlJSRefactoringFile::isCursorOn(AST::UiObjectMember *ast) const
{
    const unsigned pos = cursor().position();

    return ast->firstSourceLocation().begin() <= pos
            && pos <= ast->lastSourceLocation().end();
}

bool QmlJSRefactoringFile::isCursorOn(AST::UiQualifiedId *ast) const
{
    const unsigned pos = cursor().position();

    if (ast->identifierToken.begin() > pos)
        return false;

    AST::UiQualifiedId *last = ast;
    while (last->next)
        last = last->next;

    return pos <= ast->identifierToken.end();
}

QmlJSRefactoringChanges *QmlJSRefactoringFile::refactoringChanges() const
{
    return static_cast<QmlJSRefactoringChanges *>(m_refactoringChanges);
}
