qt-creator/src/plugins/diffeditor/diffeditorcontroller.cpp

/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
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** GNU General Public License Usage
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** 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
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#include "diffeditorconstants.h"
#include "diffeditorcontroller.h"
#include "diffeditordocument.h"

#include <coreplugin/editormanager/editormanager.h>
#include <coreplugin/editormanager/ieditor.h>
#include <coreplugin/icore.h>

#include <utils/qtcassert.h>

#include <QStringList>

namespace DiffEditor {

DiffEditorController::DiffEditorController(Core::IDocument *document) :
    QObject(document),
    m_document(qobject_cast<Internal::DiffEditorDocument *>(document)),
    m_isReloading(false),
    m_diffFileIndex(-1),
    m_chunkIndex(-1)
{
    QTC_ASSERT(m_document, return);
    m_document->setController(this);
}

bool DiffEditorController::isReloading() const
{
    return m_isReloading;
}

QString DiffEditorController::baseDirectory() const
{
    return m_document->baseDirectory();
}

int DiffEditorController::contextLineCount() const
{
    return m_document->contextLineCount();
}

bool DiffEditorController::ignoreWhitespace() const
{
    return m_document->ignoreWhitespace();
}

QString DiffEditorController::revisionFromDescription() const
{
    // TODO: This is specific for git and does not belong here at all!
    return m_document->description().mid(7, 12);
}

QString DiffEditorController::makePatch(bool revert, bool addPrefix) const
{
    return m_document->makePatch(m_diffFileIndex, m_chunkIndex, revert, addPrefix);
}

Core::IDocument *DiffEditorController::findOrCreateDocument(const QString &vcsId,
                                                            const QString &displayName)
{
    QString preferredDisplayName = displayName;
    Core::IEditor *editor = Core::EditorManager::openEditorWithContents(
                Constants::DIFF_EDITOR_ID, &preferredDisplayName, QByteArray(), vcsId);
    return editor ? editor->document() : 0;
}

DiffEditorController *DiffEditorController::controller(Core::IDocument *document)
{
    auto doc = qobject_cast<Internal::DiffEditorDocument *>(document);
    return doc ? doc->controller() : 0;
}

void DiffEditorController::setDiffFiles(const QList<FileData> &diffFileList,
                                        const QString &workingDirectory,
                                        const QString &startupFile)
{
    m_document->setDiffFiles(diffFileList, workingDirectory, startupFile);
}

void DiffEditorController::setDescription(const QString &description)
{
    m_document->setDescription(description);
}

void DiffEditorController::branchesReceived(const QString &branches)
{
    QString tmp = m_document->description();
    tmp.replace(QLatin1String(Constants::EXPAND_BRANCHES), branches);
    m_document->setDescription(tmp);
}

void DiffEditorController::requestMoreInformation()
{
    const QString rev = revisionFromDescription();
    if (!rev.isEmpty())
        emit requestInformationForCommit(rev);
}

/**
 * @brief Force the lines of context to the given number.
 *
 * The user will not be able to change the context lines anymore. This needs to be set before
 * starting any operation or the flag will be ignored by the UI.
 *
 * @param lines Lines of context to display.
 */
void DiffEditorController::forceContextLineCount(int lines)
{
    m_document->forceContextLineCount(lines);
}

Core::IDocument *DiffEditorController::document() const
{
    return m_document;
}

/**
 * @brief Request the diff data to be re-read.
 */
void DiffEditorController::requestReload()
{
    m_isReloading = true;
    m_document->beginReload();
    reload();
}

void DiffEditorController::reloadFinished(bool success)
{
    m_document->endReload(success);
    m_isReloading = false;
}

void DiffEditorController::requestChunkActions(QMenu *menu, int diffFileIndex, int chunkIndex)
{
    m_diffFileIndex = diffFileIndex;
    m_chunkIndex = chunkIndex;
    emit chunkActionsRequested(menu, diffFileIndex >= 0 && chunkIndex >= 0);
}

} // namespace DiffEditor