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/*
* Copyright (C) 2025 Linux Studio Plugins Project <https://lsp-plug.in/>
* (C) 2025 Vladimir Sadovnikov <sadko4u@gmail.com>
*
* This file is part of lsp-tk-lib
* Created on: 9 июн. 2020 г.
*
* lsp-tk-lib is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* lsp-tk-lib 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with lsp-tk-lib. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef LSP_PLUG_IN_TK_PROP_MULTI_TEXTSELECTION_H_
#define LSP_PLUG_IN_TK_PROP_MULTI_TEXTSELECTION_H_
#ifndef LSP_PLUG_IN_TK_IMPL
#error "use <lsp-plug.in/tk/tk.h>"
#endif
namespace lsp
{
namespace tk
{
/**
* Text Selection property.
* Allows to control text selection in such widgets like Edit
*/
class TextSelection: public MultiProperty
{
protected:
enum property_t
{
P_VALUE,
P_FIRST,
P_LAST,
P_COUNT
};
protected:
static const prop::desc_t DESC[];
protected:
atom_t vAtoms[P_COUNT]; // Atom bindings
ssize_t nFirst; // First element in selection
ssize_t nLast; // Last element in selection
ssize_t nLimit; // Selection limit, invisible property
protected:
virtual void push() override;
virtual void commit(atom_t property) override;
void parse(const LSPString *s);
protected:
explicit TextSelection(prop::Listener *listener = NULL);
TextSelection(const TextSelection &) = delete;
TextSelection(TextSelection &&) = delete;
virtual ~TextSelection() override;
TextSelection & operator = (const TextSelection &) = delete;
TextSelection & operator = (TextSelection &&) = delete;
public:
inline ssize_t first() const { return nFirst; }
inline ssize_t last() const { return nLast; }
inline bool valid() const { return (nFirst >= 0) && (nLast >= 0); }
inline bool invalid() const { return (nFirst < 0) || (nLast < 0); }
inline bool is_empty() const { return nFirst == nLast; }
inline bool non_empty() const { return nFirst != nLast; }
inline ssize_t length() const { return (nFirst < nLast) ? nLast - nFirst : nFirst - nLast; }
inline bool reverted() const { return nFirst > nLast; }
inline ssize_t starting() const { return lsp_min(nFirst, nLast); }
inline ssize_t ending() const { return lsp_max(nFirst, nLast); }
inline ssize_t limit() const { return nLimit; }
void set(ssize_t first, ssize_t last);
void set(ssize_t first);
ssize_t set_first(ssize_t value);
ssize_t set_last(ssize_t value);
void set_all();
void truncate();
void unset();
inline void clear() { unset(); }
};
namespace prop
{
/**
* TextSelection property implementation
*/
class TextSelection: public tk::TextSelection
{
public:
explicit TextSelection(prop::Listener *listener = NULL): tk::TextSelection(listener) {};
TextSelection(const TextSelection &) = delete;
TextSelection(TextSelection &&) = delete;
TextSelection & operator = (const TextSelection &) = delete;
TextSelection & operator = (TextSelection &&) = delete;
public:
void set_limit(ssize_t limit);
/**
* Bind property with specified name to the style of linked widget
*/
inline status_t bind(atom_t property, Style *style) { return tk::TextSelection::bind(property, style, vAtoms, DESC, &sListener); }
inline status_t bind(const char *property, Style *style) { return tk::TextSelection::bind(property, style, vAtoms, DESC, &sListener); }
inline status_t bind(const LSPString *property, Style *style) { return tk::TextSelection::bind(property, style, vAtoms, DESC, &sListener); }
/**
* Unbind property
*/
inline status_t unbind() { return tk::TextSelection::unbind(vAtoms, DESC, &sListener); };
};
} /* namespace prop */
} /* namespace tk */
} /* namespace lsp */
#endif /* LSP_PLUG_IN_TK_PROP_MULTI_TEXTSELECTION_H_ */
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