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87 lines
2.8 KiB
87 lines
2.8 KiB
// -*- C++ -*-
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//
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// selection.h
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//
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// (C) 2001-20004 Stefan Kebekus
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// Distributed under the GPL
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#ifndef selection_h
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#define selection_h
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#include "pageNumber.h"
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#include <tqstring.h>
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/* The --very simple-- class TextSelection represents text that the
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user has selected on a certain page of a document. The class stores
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the page number,
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two TQ_INT32 numbers, 'selectedTextStart' and 'selectedTextEnd' that
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should hold indiced referring to the start and the end of the
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selected text in the appropriate documentPage's textLinkList
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a TQString, 'selectedText' that holds the text that is selected
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these values can be stored, retrieved, it can be checked if the
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selection is empty, and signals are emitted when the values change
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*/
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class TextSelection
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{
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public:
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// Constructs an empty selection with an invalid page number, and an
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// empty text string. The values 'selectedTextStart' and
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// 'selectedTextEnd' are set to 0. None of the signals pageChanged()
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// or selectionIsNotEmpty() is emitted at construction time
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TextSelection();
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void clear();
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// Use this method to set the data that is described above. Note
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// that the consistency of 'pageNr' 'selectedTextStart' and
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// 'selectedTextEnd' are not checked; it is entirely of the program
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// that calls this method to make sure that it sets reasonable
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// values; it is not even checked if selectedTextStart <=
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// selectedTextEnd! The signals pageChanged() and
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// selectionIsNotEmpty() are emitted if appropriate.
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void set(const PageNumber& pageNr, TQ_INT32 selectedTextStart, TQ_INT32 selectedTextEnd, const TQString& text);
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// This method can be used to find out if the selection is empty,
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// i.e. if the page number is invalid or the selected text is empty.
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bool isEmpty() const {return (!page.isValid() || selectedText.isEmpty());}
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// Method used to retrieve the data described above
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TQ_INT32 getSelectedTextStart() const {return selectedTextStart;}
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// Method used to retrieve the data described above
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TQ_INT32 getSelectedTextEnd() const {return selectedTextEnd;}
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// Method used to retrieve the data described above
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const TQString &getSelectedText() const {return selectedText;}
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// Method used to retrieve the data described above
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PageNumber getPageNumber() const {return page;}
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// If the selection is not empty, this method copies the text to the
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// system clipboard. If the selection is empty, nothing is done.
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void copyText() const;
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bool operator== (const TextSelection&) const;
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bool operator!= (const TextSelection&) const;
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private:
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// Described above
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PageNumber page;
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// Described above
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TQ_INT32 selectedTextStart, selectedTextEnd;
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// Described above
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TQString selectedText;
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};
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#endif
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