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#ifndef QMLJSQUICKFIX_H
#define QMLJSQUICKFIX_H

#include "qmljseditor.h"

#include <texteditor/quickfix.h>
#include <qmljs/parser/qmljsastfwd_p.h>
#include <qmljs/qmljsdocument.h>
#include <qmljstools/qmljsrefactoringchanges.h>

namespace ExtensionSystem {
class IPlugin;
}

namespace QmlJS {
    class ModelManagerInterface;
}

namespace QmlJSEditor {

namespace Internal {
class QmlJSQuickFixCollector;
} // namespace Internal

/*!
    Specialized QuickFixState for QML/JavaScript quick-fixes.

    This specialized state for QML/JavaScript quick-fixes also holds the
    QmlJSEditor::Internal::SemanticInfo for the document in the editor.
 */
class QmlJSQuickFixState: public TextEditor::QuickFixState
{
    friend class Internal::QmlJSQuickFixCollector;

public:
    /// Creates a new state for the given editor.
    QmlJSQuickFixState(TextEditor::BaseTextEditorWidget *editor);

    SemanticInfo semanticInfo() const;

    /// \returns the snapshot holding the document of the editor.
    QmlJS::Snapshot snapshot() const;

    /// \returns the document of the editor
    QmlJS::Document::Ptr document() const;

    const QmlJSTools::QmlJSRefactoringFile currentFile() const;

private:
    SemanticInfo _semanticInfo;
};

/*!
    A quick-fix operation for the QML/JavaScript editor, which works on a
    QmlJSQuickFixState .
 */
class QmlJSQuickFixOperation: public TextEditor::QuickFixOperation
{
    Q_DISABLE_COPY(QmlJSQuickFixOperation)

public:
    /*!
        Creates a new QmlJSQuickFixOperation.

        This operation will copy the complete state, in order to be able to perform
        its changes later on.

        \param state The state for which this operation was created.
        \param priority The priority for this operation.
     */
    explicit QmlJSQuickFixOperation(const QmlJSQuickFixState &state, int priority = -1);
    virtual ~QmlJSQuickFixOperation();

    virtual void perform();

protected:
    typedef Utils::ChangeSet::Range Range;

    virtual void performChanges(QmlJSTools::QmlJSRefactoringFile *currentFile,
                                QmlJSTools::QmlJSRefactoringChanges *refactoring) = 0;

    /// \returns A const-reference to the state of the operation.
    const QmlJSQuickFixState &state() const;

    /// \returns The name of the file for for which this operation is invoked.
    QString fileName() const;

private:
    QmlJSQuickFixState _state;
};

class QmlJSQuickFixFactory: public TextEditor::QuickFixFactory
{
    Q_OBJECT

public:
    QmlJSQuickFixFactory();
    virtual ~QmlJSQuickFixFactory();

    virtual QList<TextEditor::QuickFixOperation::Ptr> matchingOperations(TextEditor::QuickFixState *state);

    /*!
        Implement this method to match and create the appropriate
        QmlJSQuickFixOperation objects.
     */
    virtual QList<QmlJSQuickFixOperation::Ptr> match(const QmlJSQuickFixState &state) = 0;

    static QList<QmlJSQuickFixOperation::Ptr> noResult();
    static QList<QmlJSQuickFixOperation::Ptr> singleResult(QmlJSQuickFixOperation *operation);
};

namespace Internal {

class QmlJSQuickFixCollector: public TextEditor::QuickFixCollector
{
    Q_OBJECT

public:
    QmlJSQuickFixCollector();
    virtual ~QmlJSQuickFixCollector();

    virtual bool supportsEditor(TextEditor::ITextEditor *editor) const;
    virtual bool supportsPolicy(TextEditor::CompletionPolicy policy) const;
    virtual TextEditor::QuickFixState *initializeCompletion(TextEditor::BaseTextEditorWidget *editor);

    virtual QList<TextEditor::QuickFixFactory *> quickFixFactories() const;

    /// Registers all quick-fixes in this plug-in as auto-released objects.
    static void registerQuickFixes(ExtensionSystem::IPlugin *plugIn);
};

} // namespace Internal
} // namespace QmlJSEditor

#endif // QMLJSQUICKFIX_H