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https://bitbucket.org/smil3y/kde-extraapps.git
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151 lines
4.2 KiB
C++
151 lines
4.2 KiB
C++
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/*
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Copyright (c) 2003-2007 Clarence Dang <dang@kde.org>
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#define DEBUG_KP_TOOL_TEXT 0
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#include <kpToolTextBackspaceCommand.h>
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#include <qlist.h>
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#include <kpTextSelection.h>
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#include <kpViewManager.h>
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kpToolTextBackspaceCommand::kpToolTextBackspaceCommand (const QString &name,
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int row, int col, Action action,
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kpCommandEnvironment *environ)
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: kpNamedCommand (name, environ),
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m_row (row), m_col (col),
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m_numBackspaces (0)
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{
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viewManager ()->setTextCursorPosition (m_row, m_col);
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if (action == AddBackspaceNow)
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addBackspace ();
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}
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kpToolTextBackspaceCommand::~kpToolTextBackspaceCommand ()
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{
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}
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// public
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void kpToolTextBackspaceCommand::addBackspace ()
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{
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QList <QString> textLines = textSelection ()->textLines ();
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if (m_col > 0)
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{
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m_deletedText.prepend (textLines [m_row][m_col - 1]);
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textLines [m_row] = textLines [m_row].left (m_col - 1) +
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textLines [m_row].mid (m_col);
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m_col--;
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}
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else
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{
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if (m_row > 0)
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{
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int newCursorRow = m_row - 1;
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int newCursorCol = textLines [newCursorRow].length ();
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m_deletedText.prepend ('\n');
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textLines [newCursorRow] += textLines [m_row];
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textLines.erase (textLines.begin () + m_row);
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m_row = newCursorRow;
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m_col = newCursorCol;
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}
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}
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textSelection ()->setTextLines (textLines);
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viewManager ()->setTextCursorPosition (m_row, m_col);
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m_numBackspaces++;
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}
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// public virtual [base kpCommand]
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kpCommandSize::SizeType kpToolTextBackspaceCommand::size () const
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{
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return (kpCommandSize::SizeType) m_deletedText.length () * sizeof (QChar);
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}
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// public virtual [base kpCommand]
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void kpToolTextBackspaceCommand::execute ()
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{
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viewManager ()->setTextCursorPosition (m_row, m_col);
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m_deletedText.clear ();
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int oldNumBackspaces = m_numBackspaces;
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m_numBackspaces = 0;
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for (int i = 0; i < oldNumBackspaces; i++)
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addBackspace ();
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}
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// public virtual [base kpCommand]
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void kpToolTextBackspaceCommand::unexecute ()
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{
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viewManager ()->setTextCursorPosition (m_row, m_col);
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QList <QString> textLines = textSelection ()->textLines ();
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for (int i = 0; i < (int) m_deletedText.length (); i++)
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{
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if (m_deletedText [i] == '\n')
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{
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const QString rightHalf = textLines [m_row].mid (m_col);
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textLines [m_row].truncate (m_col);
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textLines.insert (textLines.begin () + m_row + 1, rightHalf);
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m_row++;
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m_col = 0;
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}
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else
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{
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const QString leftHalf = textLines [m_row].left (m_col);
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const QString rightHalf = textLines [m_row].mid (m_col);
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textLines [m_row] = leftHalf + m_deletedText [i] + rightHalf;
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m_col++;
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}
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}
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m_deletedText.clear ();
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textSelection ()->setTextLines (textLines);
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viewManager ()->setTextCursorPosition (m_row, m_col);
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}
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