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/*
* KDevelop Generic Code Completion Support
*
* Copyright 2006-2008 Hamish Rodda <rodda@kde.org>
* Copyright 2007-2008 David Nolden <david.nolden.kdevelop@art-master.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef KDEVPLATFORM_CODECOMPLETIONMODEL_H
#define KDEVPLATFORM_CODECOMPLETIONMODEL_H
#include <QPair>
#include <QMap>
#include <QPointer>
#include <QExplicitlySharedDataPointer>
#include <QUrl>
#include "../duchain/duchainpointer.h"
#include <language/languageexport.h>
#include "codecompletioncontext.h"
#include "codecompletionitem.h"
#include <KTextEditor/CodeCompletionModel>
#include <KTextEditor/CodeCompletionModelControllerInterface>
class QMutex;
namespace KDevelop {
class DUContext;
class Declaration;
class CodeCompletionWorker;
class CompletionWorkerThread;
class KDEVPLATFORMLANGUAGE_EXPORT CodeCompletionModel
: public KTextEditor::CodeCompletionModel
, public KTextEditor::CodeCompletionModelControllerInterface
{
Q_OBJECT
Q_INTERFACES(KTextEditor::CodeCompletionModelControllerInterface)
public:
explicit CodeCompletionModel(QObject* parent);
~CodeCompletionModel() override;
///This MUST be called after the creation of this completion-model.
///If you use the KDevelop::CodeCompletion helper-class, that one cares about it.
virtual void initialize();
///Entry-point for code-completion. This determines ome settings, clears the model, and then calls completionInvokedInternal for further processing.
void completionInvoked(KTextEditor::View* view, const KTextEditor::Range& range,
KTextEditor::CodeCompletionModel::InvocationType invocationType) override;
QModelIndex index (int row, int column, const QModelIndex& parent = QModelIndex()) const override;
QVariant data(const QModelIndex& index, int role = Qt::DisplayRole) const override;
int rowCount (const QModelIndex& parent = QModelIndex()) const override;
QModelIndex parent (const QModelIndex& index) const override;
///Use this to set whether the code-completion widget should wait for this model until it's shown
///This makes sense when the model takes some time but not too much time, to make the UI less flickering and
///annoying.
///The default is false
///@todo Remove this option, make it true by default, and make sure in CodeCompletionWorker that the whole thing cannot break
void setForceWaitForModel(bool wait);
bool forceWaitForModel();
///Convenience-storage for use by the inherited completion model
void setCompletionContext(const QExplicitlySharedDataPointer<CodeCompletionContext>& completionContext);
QExplicitlySharedDataPointer<CodeCompletionContext> completionContext() const;
///Convenience-storage for use by the inherited completion model
KDevelop::TopDUContextPointer currentTopContext() const;
void setCurrentTopContext(const KDevelop::TopDUContextPointer& topContext);
///Whether the completion should be fully detailed. If false, it should be simplified, so no argument-hints,
///no expanding information, no type-information, etc.
bool fullCompletion() const;
MatchReaction matchingItem(const QModelIndex& matched) override;
QString filterString(KTextEditor::View* view, const KTextEditor::Range& range,
const KTextEditor::Cursor& position) override;
void clear();
///Returns the tree-element that belongs to the index, or zero
QExplicitlySharedDataPointer<CompletionTreeElement> itemForIndex(const QModelIndex& index) const;
Q_SIGNALS:
///Connection from this completion-model into the background worker thread. You should emit this from within completionInvokedInternal.
void completionsNeeded(const KDevelop::DUContextPointer& context, const KTextEditor::Cursor& position,
KTextEditor::View* view);
///Additional signal that allows directly stepping into the worker-thread, bypassing computeCompletions(..) etc.
///doSpecialProcessing(data) will be executed in the background thread.
void doSpecialProcessingInBackground(uint data);
protected Q_SLOTS:
///Connection from the background-thread into the model: This is called when the background-thread is ready
virtual void foundDeclarations(const QList<QExplicitlySharedDataPointer<CompletionTreeElement>>& item,
const QExplicitlySharedDataPointer<CodeCompletionContext>& completionContext);
protected:
///Eventually override this, determine the context or whatever, and then emit completionsNeeded(..) to continue processing in the background tread.
///The default-implementation does this completely, so if you don't need to do anything special, you can just leave it.
virtual void completionInvokedInternal(KTextEditor::View* view, const KTextEditor::Range& range,
KTextEditor::CodeCompletionModel::InvocationType invocationType,
const QUrl& url);
void executeCompletionItem(KTextEditor::View* view, const KTextEditor::Range& word,
const QModelIndex& index) const override;
QExplicitlySharedDataPointer<CodeCompletionContext> m_completionContext;
using DeclarationContextPair = QPair<KDevelop::DeclarationPointer,
QExplicitlySharedDataPointer<CodeCompletionContext>>;
QList<QExplicitlySharedDataPointer<CompletionTreeElement>> m_completionItems;
/// Should create a completion-worker. The worker must have no parent object,
/// because else its thread-affinity can not be changed.
virtual CodeCompletionWorker* createCompletionWorker() = 0;
friend class CompletionWorkerThread;
CodeCompletionWorker* worker() const;
private:
bool m_forceWaitForModel;
bool m_fullCompletion;
QMutex* m_mutex;
CompletionWorkerThread* m_thread;
QString m_filterString;
KDevelop::TopDUContextPointer m_currentTopContext;
};
}
#endif
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