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git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@33699 a592a061-630c-0410-9148-cb99ea01b6c8
401 lines
13 KiB
C++
401 lines
13 KiB
C++
// -*- C++ -*-
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/**
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* \file Text.h
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author unknown
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* \author Lars Gullik Bjønnes
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* \author John Levon
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*
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* Full author contact details are available in file CREDITS.
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*/
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#ifndef TEXT_H
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#define TEXT_H
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#include "DocIterator.h"
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#include "ParagraphList.h"
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namespace lyx {
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class Buffer;
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class BufferParams;
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class BufferView;
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class CompletionList;
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class Cursor;
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class CursorSlice;
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class DocIterator;
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class ErrorList;
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class Font;
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class FontInfo;
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class FuncRequest;
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class FuncStatus;
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class Inset;
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class Lexer;
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class PainterInfo;
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class Spacing;
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/// This class encapsulates the main text data and operations in LyX.
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/// This is more or less the private implementation of InsetText.
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class Text {
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private:
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/// Default constructor.
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Text(InsetText * owner, bool use_default_layout);
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/// Copy constructor.
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Text(InsetText * owner, Text const & text);
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public:
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/// \return true if there's no content at all.
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/// \warning a non standard layout on an empty paragraph doesn't
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// count as empty.
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bool empty() const;
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/// Access to owner InsetText.
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InsetText const & inset() const;
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///
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FontInfo layoutFont(pit_type pit) const;
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///
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FontInfo labelFont(Paragraph const & par) const;
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/** Set font of character at position \p pos in paragraph \p pit.
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* Must not be called if \p pos denotes an inset with text contents,
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* and the inset is not allowed inside a font change (see below).
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*/
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void setCharFont(pit_type pit, pos_type pos,
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Font const & font, Font const & display_font);
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/** Needed to propagate font changes to all text cells of insets
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* that are not allowed inside a font change (bug 1973).
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* Must not be called if \p pos denotes an ordinary character or an
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* inset that is alowed inside a font change.
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* FIXME: This should be removed, see documentation of noFontChange
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* in insetbase.h
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*/
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void setInsetFont(BufferView const & bv, pit_type pit, pos_type pos,
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Font const & font, bool toggleall = false);
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/// what you expect when pressing \<enter\> at cursor position
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/// \param inverse_logic if false, the same layout is set for the
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/// new paragraph if the layout is an environment; if true, the
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/// same layout is set if it is not an environment
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void breakParagraph(Cursor & cur, bool inverse_logic = false);
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/// set layout over selection
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void setLayout(pit_type start, pit_type end,
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docstring const & layout);
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/// Set given layout to current cursor position.
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/// FIXME: replace Cursor with DocIterator.
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void setLayout(Cursor & cur, docstring const & layout);
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/// what type of depth change to make
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enum DEPTH_CHANGE {
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INC_DEPTH,
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DEC_DEPTH
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};
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/// Increase or decrease the nesting depth of the selected paragraph(s)
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/// FIXME: replace Cursor with DocIterator.
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void changeDepth(Cursor & cur, DEPTH_CHANGE type);
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/// Returns whether something would be changed by changeDepth
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/// FIXME: replace Cursor with DocIterator.
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bool changeDepthAllowed(Cursor & cur, DEPTH_CHANGE type) const;
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/// Set font over selection paragraphs and rebreak.
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/// FIXME: replace Cursor with DocIterator.
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void setFont(Cursor & cur, Font const &, bool toggleall = false);
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/// Set font from \p begin to \p end and rebreak.
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void setFont(BufferView const & bv, CursorSlice const & begin,
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CursorSlice const & end, Font const &,
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bool toggleall = false);
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///
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void toggleFree(Cursor & cur, Font const &, bool toggleall = false);
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/// ???
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/// FIXME: replace Cursor with DocIterator.
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docstring getStringToIndex(Cursor const & cur);
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/// Convert the paragraphs to a string.
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/// \param AsStringParameter options. This can contain any combination of
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/// asStringParameter values. Valid examples:
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/// asString(AS_STR_LABEL)
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/// asString(AS_STR_LABEL | AS_STR_INSETS)
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/// asString(AS_STR_INSETS)
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docstring asString(int options = AS_STR_NONE) const;
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///
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docstring asString(pit_type beg, pit_type end,
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int options = AS_STR_NONE) const;
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/// insert a character at cursor position
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/// FIXME: replace Cursor with DocIterator.
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void insertChar(Cursor & cur, char_type c);
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/// insert an inset at cursor position
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/// FIXME: replace Cursor with DocIterator.
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void insertInset(Cursor & cur, Inset * inset);
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/// try to handle that request
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/// FIXME: replace Cursor with DocIterator.
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void dispatch(Cursor & cur, FuncRequest & cmd);
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/// do we want to handle this event?
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bool getStatus(Cursor & cur, FuncRequest const & cmd,
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FuncStatus & status) const;
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/// read-only access to individual paragraph
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Paragraph const & getPar(pit_type pit) const { return pars_[pit]; }
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/// read-write access to individual paragraph
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Paragraph & getPar(pit_type pit) { return pars_[pit]; }
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// Returns the current font and depth as a message.
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/// FIXME: replace Cursor with DocIterator.
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docstring currentState(Cursor const & cur) const;
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/** Find the word under \c from in the relative location
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* defined by \c word_location.
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* @param from return here the start of the word
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* @param to return here the end of the word
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*/
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void getWord(CursorSlice & from, CursorSlice & to, word_location const) const;
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/// just selects the word the cursor is in
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void selectWord(Cursor & cur, word_location loc);
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/// select all text
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void selectAll(Cursor & cur);
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/// convenience function get the previous word or an empty string
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docstring previousWord(CursorSlice const & sl) const;
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/// what type of change operation to make
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enum ChangeOp {
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ACCEPT,
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REJECT
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};
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/// accept or reject the selected change
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void acceptOrRejectChanges(Cursor & cur, ChangeOp op);
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/// accept the changes within the complete Text
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void acceptChanges();
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/// reject the changes within the complete Text
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void rejectChanges();
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/// returns true if par was empty and was removed
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bool setCursor(Cursor & cur, pit_type par, pos_type pos,
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bool setfont = true, bool boundary = false);
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///
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void setCursor(CursorSlice &, pit_type par, pos_type pos);
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///
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void setCursorIntern(Cursor & cur, pit_type par,
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pos_type pos, bool setfont = true, bool boundary = false);
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///
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void recUndo(Cursor & cur, pit_type first, pit_type last) const;
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///
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void recUndo(Cursor & cur, pit_type first) const;
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/// Move cursor one position backwards
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/**
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* Returns true if an update is needed after the move.
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*/
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bool cursorBackward(Cursor & cur);
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/// Move cursor visually one position to the left
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/**
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* \param skip_inset if true, don't enter insets
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* Returns true if an update is needed after the move.
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*/
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bool cursorVisLeft(Cursor & cur, bool skip_inset = false);
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/// Move cursor one position forward
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/**
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* Returns true if an update is needed after the move.
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*/
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bool cursorForward(Cursor & cur);
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/// Move cursor visually one position to the right
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/**
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* \param skip_inset if true, don't enter insets
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* Returns true if an update is needed after the move.
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*/
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bool cursorVisRight(Cursor & cur, bool skip_inset = false);
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///
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bool cursorBackwardOneWord(Cursor & cur);
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///
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bool cursorForwardOneWord(Cursor & cur);
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///
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bool cursorVisLeftOneWord(Cursor & cur);
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///
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bool cursorVisRightOneWord(Cursor & cur);
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/// Delete from cursor up to the end of the current or next word.
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void deleteWordForward(Cursor & cur);
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/// Delete from cursor to start of current or prior word.
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void deleteWordBackward(Cursor & cur);
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///
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bool cursorUpParagraph(Cursor & cur);
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///
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bool cursorDownParagraph(Cursor & cur);
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///
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bool cursorTop(Cursor & cur);
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///
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bool cursorBottom(Cursor & cur);
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/// Erase character at cursor. Honour change tracking
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/// FIXME: replace Cursor with DocIterator.
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bool erase(Cursor & cur);
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/// Delete character before cursor. Honour CT
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/// FIXME: replace Cursor with DocIterator.
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bool backspace(Cursor & cur);
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// Dissolve the inset under cursor
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/// FIXME: replace Cursor with DocIterator.
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bool dissolveInset(Cursor & cur);
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///
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bool selectWordWhenUnderCursor(Cursor & cur, word_location);
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/// Change the case of the word at cursor position.
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void changeCase(Cursor & cur, TextCase action);
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/// Transposes the character at the cursor with the one before it
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void charsTranspose(Cursor & cur);
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/** the DTP switches for paragraphs. LyX will store the top settings
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always in the first physical paragraph, the bottom settings in the
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last. When a paragraph is broken, the top settings rest, the bottom
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settings are given to the new one.
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This function will handle a multi-paragraph selection.
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*/
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void setParagraphs(Cursor & cur, docstring arg, bool modify = false);
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/// Sets parameters for current or selected paragraphs
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void setParagraphs(Cursor & cur, ParagraphParameters const & p);
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/* these things are for search and replace */
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/// needed to insert the selection
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void insertStringAsLines(DocIterator const & dit, docstring const & str,
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Font const & font);
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/// needed to insert the selection
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void insertStringAsParagraphs(DocIterator const & dit, docstring const & str,
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Font const & font);
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/// access to our paragraphs
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ParagraphList const & paragraphs() const { return pars_; }
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ParagraphList & paragraphs() { return pars_; }
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/// return true if this is the main text
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bool isMainText() const;
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///
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double spacing(Paragraph const & par) const;
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/// make a suggestion for a label
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/// FIXME: replace Cursor with DocIterator.
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docstring getPossibleLabel(Cursor const & cur) const;
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/// is this paragraph right-to-left?
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bool isRTL(Paragraph const & par) const;
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///
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bool checkAndActivateInset(Cursor & cur, bool front);
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///
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bool checkAndActivateInsetVisual(Cursor & cur, bool movingForward, bool movingLeft);
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///
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void write(std::ostream & os) const;
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/// returns true if \end_document has not been read
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/// insetPtr is the containing Inset
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bool read(Lexer & lex, ErrorList & errorList,
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InsetText * insetPtr);
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/// delete double spaces, leading spaces, and empty paragraphs around old cursor.
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/// \retval true if a change has happened and we need a redraw.
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/// FIXME: replace Cursor with DocIterator. This is not possible right
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/// now because recordUndo() is called which needs a Cursor.
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static bool deleteEmptyParagraphMechanism(Cursor & cur,
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Cursor & old, bool & need_anchor_change);
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/// delete double spaces, leading spaces, and empty paragraphs
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/// from \first to \last paragraph
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void deleteEmptyParagraphMechanism(pit_type first, pit_type last, bool trackChanges);
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/// To resolve macros properly the texts get their DocIterator.
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/// Every macro definition is stored with its DocIterator
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/// as well. Only those macros with a smaller iterator become
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/// visible in a paragraph.
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DocIterator macrocontextPosition() const;
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///
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void setMacrocontextPosition(DocIterator const & pos);
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///
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bool completionSupported(Cursor const & cur) const;
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///
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CompletionList const * createCompletionList(Cursor const & cur) const;
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///
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bool insertCompletion(Cursor & cur, docstring const & s, bool /*finished*/);
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///
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docstring completionPrefix(Cursor const & cur) const;
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/// for the environments
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pit_type depthHook(pit_type par, depth_type depth) const;
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///
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pit_type outerHook(pit_type par) const;
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/// Is it the first par with same depth and layout?
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bool isFirstInSequence(pit_type par) const;
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/// Get the font of the "environment" of paragraph \p par_offset in \p pars.
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/// All font changes of the paragraph are relative to this font.
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Font const outerFont(pit_type par_offset) const;
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private:
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/// The InsetText owner shall have access to everything.
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friend class InsetText;
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/// return past-the-last paragraph influenced by a layout
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/// change on pit
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pit_type undoSpan(pit_type pit);
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// fix the cursor `cur' after a characters has been deleted at `where'
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// position. Called by deleteEmptyParagraphMechanism
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static void fixCursorAfterDelete(CursorSlice & cur, CursorSlice const & where);
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// At cursor position 0, try to merge the paragraph with the one before it.
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// Ignore change tracking, i.e., physically remove the end-of-par character
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bool backspacePos0(Cursor & cur);
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/// handle the case where bibitems were deleted
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bool handleBibitems(Cursor & cur);
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/// are we in a list item (description etc.)?
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bool inDescriptionItem(Cursor & cur) const;
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///
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void charInserted(Cursor & cur);
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/// set 'number' font property
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void number(Cursor & cur);
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/// paste plain text at current cursor.
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/// \param str string to paste
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/// \param asParagraphs whether to paste as paragraphs or as lines
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void pasteString(Cursor & cur, docstring const & str,
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bool asParagraphs);
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///
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void readParToken(Paragraph & par, Lexer & lex, std::string const & token,
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Font & font, Change & change, ErrorList & errorList);
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///
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void readParagraph(Paragraph & par, Lexer & lex, ErrorList & errorList);
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/// Set Label Width string to all paragraphs of the same layout
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/// and depth in a sequence.
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void setLabelWidthStringToSequence(pit_type const par_offset, docstring const & s);
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/// Owner Inset.
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InsetText * owner_;
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///
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ParagraphList pars_;
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///
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bool autoBreakRows_;
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/// position of the text in the buffer.
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DocIterator macrocontext_position_;
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///
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unsigned int undo_counter_;
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};
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///
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void breakParagraphConservative(BufferParams const & bparams,
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ParagraphList & paragraphs,
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pit_type par,
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pos_type pos);
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/**
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* Append the next paragraph onto the tail of this one.
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* Be careful, this doesent make any check at all.
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*/
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void mergeParagraph(BufferParams const & bparams,
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ParagraphList & paragraphs, pit_type par);
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/// accept the changes within the complete ParagraphList
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void acceptChanges(ParagraphList & pars, BufferParams const & bparams);
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} // namespace lyx
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#endif // TEXT_H
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