overflowingtxt.hxx

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 *   Licensed to the Apache Software Foundation (ASF) under one or more
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 */
 
#ifndef INCLUDED_EDITENG_OVERFLOWINGTXT_HXX
#define INCLUDED_EDITENG_OVERFLOWINGTXT_HXX
 
#include <editeng/editengdllapi.h>
#include <editeng/editdata.hxx>
 
#include <com/sun/star/uno/Reference.h>
#include <optional>
 
namespace com::sun::star {
  namespace datatransfer { class XTransferable; }
}
 
class OutlinerParaObject;
class Outliner;
 
 
/*
 * A collection of static methods for attaching text.
 * Strongly coupled with some of the classes in this file.
 */
class TextChainingUtils
{
public:
    static css::uno::Reference< css::datatransfer::XTransferable> CreateTransferableFromText(Outliner const *);
 
    static std::optional<OutlinerParaObject> JuxtaposeParaObject(
            css::uno::Reference< css::datatransfer::XTransferable > const & xOverflowingContent,
            Outliner *,
            OutlinerParaObject const *);
    static std::optional<OutlinerParaObject> DeeplyMergeParaObject(
            css::uno::Reference< css::datatransfer::XTransferable > const & xOverflowingContent,
            Outliner *,
            OutlinerParaObject const *);
};
 
/*
 * The classes OverflowingText and NonOverflowingText handle the
 * actual preparation of the OutlinerParaObjects to be used in destination
 * and source box respectively.
*/
 
class OverflowingText
{
public:
    OverflowingText(css::uno::Reference< css::datatransfer::XTransferable > xOverflowingContent);
 
    std::optional<OutlinerParaObject> JuxtaposeParaObject(Outliner *, OutlinerParaObject const *);
    std::optional<OutlinerParaObject> DeeplyMergeParaObject(Outliner *, OutlinerParaObject const *);
 
private:
    css::uno::Reference< css::datatransfer::XTransferable > mxOverflowingContent;
};
 
class NonOverflowingText
{
public:
    NonOverflowingText(const ESelection &aSel, bool bLastParaInterrupted);
 
    std::optional<OutlinerParaObject> RemoveOverflowingText(Outliner *) const;
    ESelection GetOverflowPointSel() const;
    bool IsLastParaInterrupted() const;
 
private:
    ESelection maContentSel;
    bool mbLastParaInterrupted;
};
 
 
/*
 * classes OFlowChainedText and UFlowChainedText:
 * contain and handle the state of a broken up text _after_ a flow event
 * (respectively after Overflow and Underflow).
 *
 */
class EDITENG_DLLPUBLIC OFlowChainedText
{
public:
    OFlowChainedText(Outliner const *, bool );
    ~OFlowChainedText();
 
    std::optional<OutlinerParaObject> InsertOverflowingText(Outliner *, OutlinerParaObject const *);
    std::optional<OutlinerParaObject> RemoveOverflowingText(Outliner *);
 
    ESelection GetOverflowPointSel() const;
 
    bool IsLastParaInterrupted() const;
 
private:
    std::optional<NonOverflowingText> mpNonOverflowingTxt;
    std::optional<OverflowingText> mpOverflowingTxt;
 
    bool mbIsDeepMerge;
};
 
// UFlowChainedText is a simpler class than OFlowChainedText: it almost only joins para-objects
class EDITENG_DLLPUBLIC UFlowChainedText
{
public:
    UFlowChainedText(Outliner const *, bool);
    std::optional<OutlinerParaObject> CreateMergedUnderflowParaObject(Outliner *, OutlinerParaObject const *);
 
private:
    css::uno::Reference< css::datatransfer::XTransferable > mxUnderflowingTxt;
 
    bool mbIsDeepMerge;
};
 
#endif
 
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