1 files changed, 104 insertions, 0 deletions
diff --git a/fpicker/source/office/autocmpledit.cxx b/fpicker/source/office/autocmpledit.cxx
new file mode 100644
index 000000000..89a2d0b0c
--- /dev/null
+++ b/fpicker/source/office/autocmpledit.cxx
@@ -0,0 +1,104 @@
+/* -*- 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: */