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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include <vcl/event.hxx>
#include "autocmpledit.hxx"
AutocompleteEdit::AutocompleteEdit(std::unique_ptr<weld::Entry> xEntry)
: m_xEntry(std::move(xEntry))
, m_aChangedIdle("fpicker::AutocompleteEdit m_aChangedIdle")
, m_nLastCharCode(0)
{
m_xEntry->connect_changed(LINK(this, AutocompleteEdit, ChangedHdl));
m_xEntry->connect_key_press(LINK(this, AutocompleteEdit, KeyInputHdl));
m_aChangedIdle.SetInvokeHandler(LINK(this, AutocompleteEdit, TryAutoComplete));
}
IMPL_LINK(AutocompleteEdit, KeyInputHdl, const KeyEvent&, rKEvt, bool)
{
m_nLastCharCode = rKEvt.GetKeyCode().GetCode();
return false;
}
IMPL_LINK_NOARG(AutocompleteEdit, ChangedHdl, weld::Entry&, void)
{
m_aChangeHdl.Call(*m_xEntry);
switch (m_nLastCharCode)
{
case css::awt::Key::DELETE_WORD_BACKWARD:
case css::awt::Key::DELETE_WORD_FORWARD:
case css::awt::Key::DELETE_TO_BEGIN_OF_LINE:
case css::awt::Key::DELETE_TO_END_OF_LINE:
case KEY_BACKSPACE:
case KEY_DELETE:
m_aChangedIdle.Stop();
break;
default:
m_aChangedIdle.Start(); //launch this to happen on idle after cursor position will have been set
break;
}
}
void AutocompleteEdit::AddEntry( const OUString& rEntry )
{
m_aEntries.push_back( rEntry );
}
void AutocompleteEdit::ClearEntries()
{
m_aEntries.clear();
m_aMatching.clear();
}
IMPL_LINK_NOARG(AutocompleteEdit, TryAutoComplete, Timer *, void)
{
OUString aCurText = m_xEntry->get_text();
int nStartPos, nEndPos;
m_xEntry->get_selection_bounds(nStartPos, nEndPos);
if (std::max(nStartPos, nEndPos) != aCurText.getLength())
return;
auto nLen = std::min(nStartPos, nEndPos);
aCurText = aCurText.copy( 0, nLen );
if( aCurText.isEmpty() )
return;
if( !m_aEntries.empty() )
{
if( Match( aCurText ) )
{
m_xEntry->set_text(m_aMatching[0]);
auto nNewLen = m_aMatching[0].getLength();
m_xEntry->select_region(nLen, nNewLen);
}
}
}
bool AutocompleteEdit::Match( std::u16string_view rText )
{
bool bRet = false;
m_aMatching.clear();
for(const OUString & rEntry : m_aEntries)
{
if( rEntry.startsWithIgnoreAsciiCase( rText ) )
{
m_aMatching.push_back( rEntry );
bRet = true;
}
}
return bRet;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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