File indexing completed on 2024-05-19 05:47:27

 /* This file is part of the KDE libraries
 
    Copyright (C) 1997 Sven Radej (sven.radej@iname.com)
    Copyright (c) 1999 Patrick Ward <PAT_WARD@HP-USA-om5.om.hp.com>
    Copyright (c) 1999 Preston Brown <pbrown@kde.org>
 
    Re-designed for KDE 2.x by
    Copyright (c) 2000, 2001 Dawit Alemayehu <adawit@kde.org>
    Copyright (c) 2000, 2001 Carsten Pfeiffer <pfeiffer@kde.org>
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License (LGPL) as published by the Free Software Foundation;
    either version 2 of the License, or (at your option) any later
    version.
 
    This library 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 this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.
 */
 
 #include "klineedit.h"
 #include "klineedit_p.h"
 
 #include <kauthorized.h>
 #include <ksharedconfig.h>
 #include <kconfiggroup.h>
 #include <kcursor.h>
 #include <kcompletionbox.h>
 #include <kstandardshortcut.h>
 #include <lineediturldropeventfilter.h>
 
 #include <QTimer>
 #include <QApplication>
 #include <QClipboard>
 #include <QKeyEvent>
 #include <QMenu>
 #include <QToolTip>
 
 KLineEditPrivate::~KLineEditPrivate()
 {
 // causes a weird crash in KWord at least, so let Qt delete it for us.
 //        delete completionBox;
 }
 
 void KLineEditPrivate::_k_textChanged(const QString &text)
 {
     Q_Q(KLineEdit);
     // COMPAT (as documented): emit userTextChanged whenever textChanged is emitted
     if (!completionRunning && (text != userText)) {
         userText = text;
 #if KCOMPLETION_BUILD_DEPRECATED_SINCE(4, 5)
         emit q->userTextChanged(text);
 #endif
     }
 }
 
 // Call this when a completion operation changes the lineedit text
 // "as if it had been edited by the user".
 void KLineEditPrivate::updateUserText(const QString &text)
 {
     Q_Q(KLineEdit);
     if (!completionRunning && (text != userText)) {
         userText = text;
         q->setModified(true);
 #if KCOMPLETION_BUILD_DEPRECATED_SINCE(4, 5)
         emit q->userTextChanged(text);
 #endif
         emit q->textEdited(text);
         emit q->textChanged(text);
     }
 }
 
 bool KLineEditPrivate::s_backspacePerformsCompletion = false;
 bool KLineEditPrivate::s_initialized = false;
 
 void KLineEditPrivate::init()
 {
     Q_Q(KLineEdit);
     //---
     completionBox = nullptr;
     handleURLDrops = true;
     trapReturnKeyEvents = false;
 
     userSelection = true;
     autoSuggest = false;
     disableRestoreSelection = false;
     enableSqueezedText = false;
 
     completionRunning = false;
     if (!s_initialized) {
         KConfigGroup config(KSharedConfig::openConfig(), "General");
         s_backspacePerformsCompletion = config.readEntry("Backspace performs completion", false);
         s_initialized = true;
     }
 
     urlDropEventFilter = new LineEditUrlDropEventFilter(q);
 
     // i18n: Placeholder text in line edit widgets is the text appearing
     // before any user input, briefly explaining to the user what to type
     // (e.g. "Enter search pattern").
     // By default the text is set in italic, which may not be appropriate
     // for some languages and scripts (e.g. for CJK ideographs).
     QString metaMsg = KLineEdit::tr("1", "Italic placeholder text in line edits: 0 no, 1 yes");
     italicizePlaceholder = (metaMsg.trimmed() != QLatin1Char('0'));
     //---
     possibleTripleClick = false;
     bgRole = q->backgroundRole();
 
     // Enable the context menu by default.
     q->QLineEdit::setContextMenuPolicy(Qt::DefaultContextMenu);
     KCursor::setAutoHideCursor(q, true, true);
 
     KCompletion::CompletionMode mode = q->completionMode();
     autoSuggest = (mode == KCompletion::CompletionMan ||
                       mode == KCompletion::CompletionPopupAuto ||
                       mode == KCompletion::CompletionAuto);
     q->connect(q, SIGNAL(selectionChanged()), q, SLOT(_k_restoreSelectionColors()));
 
     if (handleURLDrops) {
         q->installEventFilter(urlDropEventFilter);
     }
 
     const QPalette p = q->palette();
     if (!previousHighlightedTextColor.isValid()) {
         previousHighlightedTextColor = p.color(QPalette::Normal, QPalette::HighlightedText);
     }
     if (!previousHighlightColor.isValid()) {
         previousHighlightColor = p.color(QPalette::Normal, QPalette::Highlight);
     }
 
     q->connect(q, SIGNAL(textChanged(QString)), q, SLOT(_k_textChanged(QString)));
 }
 
 KLineEdit::KLineEdit(const QString &string, QWidget *parent)
     : QLineEdit(string, parent), d_ptr(new KLineEditPrivate(this))
 {
     Q_D(KLineEdit);
     d->init();
 }
 
 KLineEdit::KLineEdit(QWidget *parent)
     : QLineEdit(parent), d_ptr(new KLineEditPrivate(this))
 {
     Q_D(KLineEdit);
     d->init();
 }
 
 KLineEdit::~KLineEdit()
 {
 }
 
 #if KCOMPLETION_BUILD_DEPRECATED_SINCE(5, 0)
 QString KLineEdit::clickMessage() const
 {
     return placeholderText();
 }
 #endif
 
 #if KCOMPLETION_BUILD_DEPRECATED_SINCE(5, 46)
 void KLineEdit::setClearButtonShown(bool show)
 {
     setClearButtonEnabled(show);
 }
 #endif
 
 #if KCOMPLETION_BUILD_DEPRECATED_SINCE(5, 46)
 bool KLineEdit::isClearButtonShown() const
 {
     return isClearButtonEnabled();
 }
 #endif
 
 QSize KLineEdit::clearButtonUsedSize() const
 {
     QSize s;
 
     if (isClearButtonEnabled()) {
         // from qlineedit_p.cpp
 
         const int iconSize = height() < 34 ? 16 : 32;
         const int buttonWidth = iconSize + 6;
         const int buttonHeight = iconSize + 2;
 
         s = QSize(buttonWidth, buttonHeight);
     }
 
     return s;
 }
 
 void KLineEdit::setCompletionMode(KCompletion::CompletionMode mode)
 {
     Q_D(KLineEdit);
     KCompletion::CompletionMode oldMode = completionMode();
 
     if (oldMode != mode && (oldMode == KCompletion::CompletionPopup ||
                             oldMode == KCompletion::CompletionPopupAuto) &&
             d->completionBox && d->completionBox->isVisible()) {
         d->completionBox->hide();
     }
 
     // If the widgets echo mode is not Normal, no completion
     // feature will be enabled even if one is requested.
     if (echoMode() != QLineEdit::Normal) {
         mode = KCompletion::CompletionNone;    // Override the request.
     }
 
     if (!KAuthorized::authorize(QStringLiteral("lineedit_text_completion"))) {
         mode = KCompletion::CompletionNone;
     }
 
     if (mode == KCompletion::CompletionPopupAuto ||
             mode == KCompletion::CompletionAuto ||
             mode == KCompletion::CompletionMan) {
         d->autoSuggest = true;
     } else {
         d->autoSuggest = false;
     }
 
     KCompletionBase::setCompletionMode(mode);
 }
 
 void KLineEdit::setCompletionModeDisabled(KCompletion::CompletionMode mode, bool disable)
 {
     Q_D(KLineEdit);
     d->disableCompletionMap[ mode ] = disable;
 }
 
 void KLineEdit::setCompletedText(const QString &t, bool marked)
 {
     Q_D(KLineEdit);
     if (!d->autoSuggest) {
         return;
     }
 
     const QString txt = text();
 
     if (t != txt) {
         setText(t);
         if (marked) {
             setSelection(t.length(), txt.length() - t.length());
         }
         setUserSelection(false);
     } else {
         setUserSelection(true);
     }
 
 }
 
 void KLineEdit::setCompletedText(const QString &text)
 {
     KCompletion::CompletionMode mode = completionMode();
     const bool marked = (mode == KCompletion::CompletionAuto ||
                          mode == KCompletion::CompletionMan ||
                          mode == KCompletion::CompletionPopup ||
                          mode == KCompletion::CompletionPopupAuto);
     setCompletedText(text, marked);
 }
 
 void KLineEdit::rotateText(KCompletionBase::KeyBindingType type)
 {
     KCompletion *comp = compObj();
     if (comp &&
             (type == KCompletionBase::PrevCompletionMatch ||
              type == KCompletionBase::NextCompletionMatch)) {
         QString input;
 
         if (type == KCompletionBase::PrevCompletionMatch) {
             input = comp->previousMatch();
         } else {
             input = comp->nextMatch();
         }
 
         // Skip rotation if previous/next match is null or the same text
         if (input.isEmpty() || input == displayText()) {
             return;
         }
         setCompletedText(input, hasSelectedText());
     }
 }
 
 void KLineEdit::makeCompletion(const QString &text)
 {
     Q_D(KLineEdit);
     KCompletion *comp = compObj();
     KCompletion::CompletionMode mode = completionMode();
 
     if (!comp || mode == KCompletion::CompletionNone) {
         return;    // No completion object...
     }
 
     const QString match = comp->makeCompletion(text);
 
     if (mode == KCompletion::CompletionPopup ||
             mode == KCompletion::CompletionPopupAuto) {
         if (match.isEmpty()) {
             if (d->completionBox) {
                 d->completionBox->hide();
                 d->completionBox->clear();
             }
         } else {
             setCompletedItems(comp->allMatches());
         }
     } else { // Auto,  ShortAuto (Man) and Shell
         // all other completion modes
         // If no match or the same match, simply return without completing.
         if (match.isEmpty() || match == text) {
             return;
         }
 
         if (mode != KCompletion::CompletionShell) {
             setUserSelection(false);
         }
 
         if (d->autoSuggest) {
             setCompletedText(match);
         }
     }
 }
 
 void KLineEdit::setReadOnly(bool readOnly)
 {
     Q_D(KLineEdit);
     // Do not do anything if nothing changed...
     if (readOnly == isReadOnly()) {
         return;
     }
 
     QLineEdit::setReadOnly(readOnly);
 
     if (readOnly) {
         d->bgRole = backgroundRole();
         setBackgroundRole(QPalette::Window);
         if (d->enableSqueezedText && d->squeezedText.isEmpty()) {
             d->squeezedText = text();
             d->setSqueezedText();
         }
     } else {
         if (!d->squeezedText.isEmpty()) {
             setText(d->squeezedText);
             d->squeezedText.clear();
         }
 
         setBackgroundRole(d->bgRole);
     }
 }
 
 void KLineEdit::setSqueezedText(const QString &text)
 {
     setSqueezedTextEnabled(true);
     setText(text);
 }
 
 void KLineEdit::setSqueezedTextEnabled(bool enable)
 {
     Q_D(KLineEdit);
     d->enableSqueezedText = enable;
 }
 
 bool KLineEdit::isSqueezedTextEnabled() const
 {
     Q_D(const KLineEdit);
     return d->enableSqueezedText;
 }
 
 void KLineEdit::setText(const QString &text)
 {
     Q_D(KLineEdit);
     if (d->enableSqueezedText && isReadOnly()) {
         d->squeezedText = text;
         d->setSqueezedText();
         return;
     }
 
     QLineEdit::setText(text);
 }
 
 void KLineEditPrivate::setSqueezedText()
 {
     Q_Q(KLineEdit);
     squeezedStart = 0;
     squeezedEnd = 0;
     const QString fullText = squeezedText;
     const int fullLength = fullText.length();
     const QFontMetrics fm(q->fontMetrics());
     const int labelWidth = q->size().width() - 2 * q->style()->pixelMetric(QStyle::PM_DefaultFrameWidth) - 2;
     const int textWidth = fm.boundingRect(fullText).width();
 
     // TODO: investigate use of QFontMetrics::elidedText for this
     if (textWidth > labelWidth) {
         // TODO: better would be "…" char (0x2026), but for that one would need to ensure it's from the main font,
         // otherwise if resulting in use of a new fallback font this can affect the metrics of the complete text,
         // resulting in shifted characters
         const QString ellipsisText = QStringLiteral("...");
         // start with the dots only
         QString squeezedText = ellipsisText;
         int squeezedWidth = fm.boundingRect(squeezedText).width();
 
         // estimate how many letters we can add to the dots on both sides
         int letters = fullText.length() * (labelWidth - squeezedWidth) / textWidth / 2;
         squeezedText = fullText.leftRef(letters) + ellipsisText + fullText.rightRef(letters);
         squeezedWidth = fm.boundingRect(squeezedText).width();
 
         if (squeezedWidth < labelWidth) {
             // we estimated too short
             // add letters while text < label
             do {
                 letters++;
                 squeezedText = fullText.leftRef(letters) + ellipsisText + fullText.rightRef(letters);
                 squeezedWidth = fm.boundingRect(squeezedText).width();
             } while (squeezedWidth < labelWidth && letters <= fullLength / 2);
             letters--;
             squeezedText = fullText.leftRef(letters) + ellipsisText + fullText.rightRef(letters);
         } else if (squeezedWidth > labelWidth) {
             // we estimated too long
             // remove letters while text > label
             do {
                 letters--;
                 squeezedText = fullText.leftRef(letters) + ellipsisText + fullText.rightRef(letters);
                 squeezedWidth = fm.boundingRect(squeezedText).width();
             } while (squeezedWidth > labelWidth && letters >= 5);
         }
 
         if (letters < 5) {
             // too few letters added -> we give up squeezing
             q->QLineEdit::setText(fullText);
         } else {
             q->QLineEdit::setText(squeezedText);
             squeezedStart = letters;
             squeezedEnd = fullText.length() - letters;
         }
 
         q->setToolTip(fullText);
 
     } else {
         q->QLineEdit::setText(fullText);
 
         q->setToolTip(QString());
         QToolTip::showText(q->pos(), QString()); // hide
     }
 
     q->setCursorPosition(0);
 }
 
 void KLineEdit::copy() const
 {
     Q_D(const KLineEdit);
     if (!d->copySqueezedText(true)) {
         QLineEdit::copy();
     }
 }
 
 bool KLineEditPrivate::copySqueezedText(bool copy) const
 {
     Q_Q(const KLineEdit);
     if (!squeezedText.isEmpty() && squeezedStart) {
         KLineEdit *that = const_cast<KLineEdit *>(q);
         if (!that->hasSelectedText()) {
             return false;
         }
         int start = q->selectionStart(), end = start + q->selectedText().length();
         if (start >= squeezedStart + 3) {
             start = start - 3 - squeezedStart + squeezedEnd;
         } else if (start > squeezedStart) {
             start = squeezedStart;
         }
         if (end >= squeezedStart + 3) {
             end = end - 3 - squeezedStart + squeezedEnd;
         } else if (end > squeezedStart) {
             end = squeezedEnd;
         }
         if (start == end) {
             return false;
         }
         QString t = squeezedText;
         t = t.mid(start, end - start);
         q->disconnect(QApplication::clipboard(), SIGNAL(selectionChanged()), q, nullptr);
         QApplication::clipboard()->setText(t, copy ? QClipboard::Clipboard : QClipboard::Selection);
         q->connect(QApplication::clipboard(), SIGNAL(selectionChanged()), q,
                 SLOT(_q_clipboardChanged()));
         return true;
     }
     return false;
 }
 
 void KLineEdit::resizeEvent(QResizeEvent *ev)
 {
     Q_D(KLineEdit);
     if (!d->squeezedText.isEmpty()) {
         d->setSqueezedText();
     }
 
     QLineEdit::resizeEvent(ev);
 }
 
 void KLineEdit::keyPressEvent(QKeyEvent *e)
 {
     Q_D(KLineEdit);
     const int key = e->key() | e->modifiers();
 
     if (KStandardShortcut::copy().contains(key)) {
         copy();
         return;
     } else if (KStandardShortcut::paste().contains(key)) {
         // TODO:
         // we should restore the original text (not autocompleted), otherwise the paste
         // will get into troubles Bug: 134691
         if (!isReadOnly()) {
             paste();
         }
         return;
     } else if (KStandardShortcut::pasteSelection().contains(key)) {
         QString text = QApplication::clipboard()->text(QClipboard::Selection);
         insert(text);
         deselect();
         return;
     } else if (KStandardShortcut::cut().contains(key)) {
         if (!isReadOnly()) {
             cut();
         }
         return;
     } else if (KStandardShortcut::undo().contains(key)) {
         if (!isReadOnly()) {
             undo();
         }
         return;
     } else if (KStandardShortcut::redo().contains(key)) {
         if (!isReadOnly()) {
             redo();
         }
         return;
     } else if (KStandardShortcut::deleteWordBack().contains(key)) {
         cursorWordBackward(true);
         if (hasSelectedText() && !isReadOnly()) {
             del();
         }
 
         e->accept();
         return;
     } else if (KStandardShortcut::deleteWordForward().contains(key)) {
         // Workaround for QT bug where
         cursorWordForward(true);
         if (hasSelectedText() && !isReadOnly()) {
             del();
         }
 
         e->accept();
         return;
     } else if (KStandardShortcut::backwardWord().contains(key)) {
         cursorWordBackward(false);
         e->accept();
         return;
     } else if (KStandardShortcut::forwardWord().contains(key)) {
         cursorWordForward(false);
         e->accept();
         return;
     } else if (KStandardShortcut::beginningOfLine().contains(key)) {
         home(false);
         e->accept();
         return;
     } else if (KStandardShortcut::endOfLine().contains(key)) {
         end(false);
         e->accept();
         return;
     }
 
     // Filter key-events if EchoMode is normal and
     // completion mode is not set to CompletionNone
     if (echoMode() == QLineEdit::Normal &&
             completionMode() != KCompletion::CompletionNone) {
         if (e->key() == Qt::Key_Return || e->key() == Qt::Key_Enter) {
             const bool trap = (d->completionBox && d->completionBox->isVisible());
             const bool stopEvent = (trap || (d->trapReturnKeyEvents &&
                                              (e->modifiers() == Qt::NoButton ||
                                               e->modifiers() == Qt::KeypadModifier)));
 
             if (stopEvent) {
                 emit QLineEdit::returnPressed();
                 e->accept();
             }
 
             emit returnPressed(displayText());
 
             if (trap) {
                 d->completionBox->hide();
                 deselect();
                 setCursorPosition(text().length());
             }
 
             // Eat the event if the user asked for it, or if a completionbox was visible
             if (stopEvent) {
                 return;
             }
         }
 
         const KeyBindingMap keys = keyBindingMap();
         const KCompletion::CompletionMode mode = completionMode();
         const bool noModifier = (e->modifiers() == Qt::NoButton ||
                                  e->modifiers() == Qt::ShiftModifier ||
                                  e->modifiers() == Qt::KeypadModifier);
 
         if ((mode == KCompletion::CompletionAuto ||
              mode == KCompletion::CompletionPopupAuto ||
              mode == KCompletion::CompletionMan) && noModifier) {
             if (!d->userSelection && hasSelectedText() &&
                     (e->key() == Qt::Key_Right || e->key() == Qt::Key_Left) &&
                     e->modifiers() == Qt::NoButton) {
                 const QString old_txt = text();
                 d->disableRestoreSelection = true;
                 const int start = selectionStart();
 
                 deselect();
                 QLineEdit::keyPressEvent(e);
                 const int cPosition = cursorPosition();
                 setText(old_txt);
 
                 // keep cursor at cPosition
                 setSelection(old_txt.length(), cPosition - old_txt.length());
                 if (e->key() == Qt::Key_Right && cPosition > start) {
                     //the user explicitly accepted the autocompletion
                     d->updateUserText(text());
                 }
 
                 d->disableRestoreSelection = false;
                 return;
             }
 
             if (e->key() == Qt::Key_Escape) {
                 if (hasSelectedText() && !d->userSelection) {
                     del();
                     setUserSelection(true);
                 }
 
                 // Don't swallow the Escape press event for the case
                 // of dialogs, which have Escape associated to Cancel
                 e->ignore();
                 return;
             }
 
         }
 
         if ((mode == KCompletion::CompletionAuto ||
              mode == KCompletion::CompletionMan) && noModifier) {
             const QString keycode = e->text();
             if (!keycode.isEmpty() && (keycode.unicode()->isPrint() ||
                                        e->key() == Qt::Key_Backspace || e->key() == Qt::Key_Delete)) {
                 const bool hasUserSelection = d->userSelection;
                 const bool hadSelection = hasSelectedText();
 
                 bool cursorNotAtEnd = false;
 
                 const int start = selectionStart();
                 const int cPos = cursorPosition();
 
                 // When moving the cursor, we want to keep the autocompletion as an
                 // autocompletion, so we want to process events at the cursor position
                 // as if there was no selection. After processing the key event, we
                 // can set the new autocompletion again.
                 if (hadSelection && !hasUserSelection && start > cPos) {
                     del();
                     setCursorPosition(cPos);
                     cursorNotAtEnd = true;
                 }
 
                 d->disableRestoreSelection = true;
                 QLineEdit::keyPressEvent(e);
                 d->disableRestoreSelection = false;
 
                 QString txt = text();
                 int len = txt.length();
                 if (!hasSelectedText() && len /*&& cursorPosition() == len */) {
                     if (e->key() == Qt::Key_Backspace) {
                         if (hadSelection && !hasUserSelection && !cursorNotAtEnd) {
                             backspace();
                             txt = text();
                             len = txt.length();
                         }
 
                         if (!d->s_backspacePerformsCompletion || !len) {
                             d->autoSuggest = false;
                         }
                     }
 
                     if (e->key() == Qt::Key_Delete) {
                         d->autoSuggest = false;
                     }
 
                     doCompletion(txt);
 
                     if ((e->key() == Qt::Key_Backspace || e->key() == Qt::Key_Delete)) {
                         d->autoSuggest = true;
                     }
 
                     e->accept();
                 }
 
                 return;
             }
 
         } else if ((mode == KCompletion::CompletionPopup ||
                     mode == KCompletion::CompletionPopupAuto) &&
                    noModifier && !e->text().isEmpty()) {
             const QString old_txt = text();
             const bool hasUserSelection = d->userSelection;
             const bool hadSelection = hasSelectedText();
             bool cursorNotAtEnd = false;
 
             const int start = selectionStart();
             const int cPos = cursorPosition();
             const QString keycode = e->text();
 
             // When moving the cursor, we want to keep the autocompletion as an
             // autocompletion, so we want to process events at the cursor position
             // as if there was no selection. After processing the key event, we
             // can set the new autocompletion again.
             if (hadSelection && !hasUserSelection && start > cPos &&
                     ((!keycode.isEmpty() && keycode.unicode()->isPrint()) ||
                      e->key() == Qt::Key_Backspace || e->key() == Qt::Key_Delete)) {
                 del();
                 setCursorPosition(cPos);
                 cursorNotAtEnd = true;
             }
 
             const int selectedLength = selectedText().length();
 
             d->disableRestoreSelection = true;
             QLineEdit::keyPressEvent(e);
             d->disableRestoreSelection = false;
 
             if ((selectedLength != selectedText().length()) && !hasUserSelection) {
                 d->_k_restoreSelectionColors();    // and set userSelection to true
             }
 
             QString txt = text();
             int len = txt.length();
             if ((txt != old_txt || txt != e->text()) && len/* && ( cursorPosition() == len || force )*/ &&
                     ((!keycode.isEmpty() && keycode.unicode()->isPrint()) ||
                      e->key() == Qt::Key_Backspace || e->key() == Qt::Key_Delete)) {
                 if (e->key() == Qt::Key_Backspace) {
                     if (hadSelection && !hasUserSelection && !cursorNotAtEnd) {
                         backspace();
                         txt = text();
                         len = txt.length();
                     }
 
                     if (!d->s_backspacePerformsCompletion) {
                         d->autoSuggest = false;
                     }
                 }
 
                 if (e->key() == Qt::Key_Delete) {
                     d->autoSuggest = false;
                 }
 
                 if (d->completionBox) {
                     d->completionBox->setCancelledText(txt);
                 }
 
                 doCompletion(txt);
 
                 if ((e->key() == Qt::Key_Backspace || e->key() == Qt::Key_Delete) &&
                         mode == KCompletion::CompletionPopupAuto) {
                     d->autoSuggest = true;
                 }
 
                 e->accept();
             } else if (!len && d->completionBox && d->completionBox->isVisible()) {
                 d->completionBox->hide();
             }
 
             return;
         } else if (mode == KCompletion::CompletionShell) {
             // Handles completion.
             QList<QKeySequence> cut;
             if (keys[TextCompletion].isEmpty()) {
                 cut = KStandardShortcut::shortcut(KStandardShortcut::TextCompletion);
             } else {
                 cut = keys[TextCompletion];
             }
 
             if (cut.contains(key)) {
                 // Emit completion if the completion mode is CompletionShell
                 // and the cursor is at the end of the string.
                 const QString txt = text();
                 const int len = txt.length();
                 if (cursorPosition() == len && len != 0) {
                     doCompletion(txt);
                     return;
                 }
             } else if (d->completionBox) {
                 d->completionBox->hide();
             }
         }
 
         // handle rotation
         // Handles previous match
         QList<QKeySequence> cut;
         if (keys[PrevCompletionMatch].isEmpty()) {
             cut = KStandardShortcut::shortcut(KStandardShortcut::PrevCompletion);
         } else {
             cut = keys[PrevCompletionMatch];
         }
 
         if (cut.contains(key)) {
             if (emitSignals()) {
                 emit textRotation(KCompletionBase::PrevCompletionMatch);
             }
             if (handleSignals()) {
                 rotateText(KCompletionBase::PrevCompletionMatch);
             }
             return;
         }
 
         // Handles next match
         if (keys[NextCompletionMatch].isEmpty()) {
             cut = KStandardShortcut::shortcut(KStandardShortcut::NextCompletion);
         } else {
             cut = keys[NextCompletionMatch];
         }
 
         if (cut.contains(key)) {
             if (emitSignals()) {
                 emit textRotation(KCompletionBase::NextCompletionMatch);
             }
             if (handleSignals()) {
                 rotateText(KCompletionBase::NextCompletionMatch);
             }
             return;
         }
 
         // substring completion
         if (compObj()) {
             QList<QKeySequence> cut;
             if (keys[SubstringCompletion].isEmpty()) {
                 cut = KStandardShortcut::shortcut(KStandardShortcut::SubstringCompletion);
             } else {
                 cut = keys[SubstringCompletion];
             }
 
             if (cut.contains(key)) {
                 if (emitSignals()) {
                     emit substringCompletion(text());
                 }
                 if (handleSignals()) {
                     setCompletedItems(compObj()->substringCompletion(text()));
                     e->accept();
                 }
                 return;
             }
         }
     }
     const int selectedLength = selectedText().length();
 
     // Let QLineEdit handle any other keys events.
     QLineEdit::keyPressEvent(e);
 
     if (selectedLength != selectedText().length()) {
         d->_k_restoreSelectionColors();    // and set userSelection to true
     }
 }
 
 void KLineEdit::mouseDoubleClickEvent(QMouseEvent *e)
 {
     Q_D(KLineEdit);
     if (e->button() == Qt::LeftButton) {
         d->possibleTripleClick = true;
         QTimer::singleShot(QApplication::doubleClickInterval(), this,
                            SLOT(_k_tripleClickTimeout()));
     }
     QLineEdit::mouseDoubleClickEvent(e);
 }
 
 void KLineEdit::mousePressEvent(QMouseEvent *e)
 {
     Q_D(KLineEdit);
     if (e->button() == Qt::LeftButton && d->possibleTripleClick) {
         selectAll();
         e->accept();
         return;
     }
 
     // if middle clicking and if text is present in the clipboard then clear the selection
     // to prepare paste operation
     if (e->button() == Qt::MidButton) {
         if (hasSelectedText() && !isReadOnly()) {
             if (QApplication::clipboard()->text(QClipboard::Selection).length() > 0) {
                 backspace();
             }
         }
     }
 
     QLineEdit::mousePressEvent(e);
 }
 
 void KLineEdit::mouseReleaseEvent(QMouseEvent *e)
 {
     Q_D(KLineEdit);
     QLineEdit::mouseReleaseEvent(e);
 
     if (QApplication::clipboard()->supportsSelection()) {
         if (e->button() == Qt::LeftButton) {
             // Fix copying of squeezed text if needed
             d->copySqueezedText(false);
         }
     }
 }
 
 void KLineEditPrivate::_k_tripleClickTimeout()
 {
     possibleTripleClick = false;
 }
 
 QMenu *KLineEdit::createStandardContextMenu()
 {
     Q_D(KLineEdit);
     QMenu *popup = QLineEdit::createStandardContextMenu();
 
     if (!isReadOnly()) {
         // FIXME: This code depends on Qt's action ordering.
         const QList<QAction *> actionList = popup->actions();
         enum { UndoAct, RedoAct, Separator1, CutAct, CopyAct, PasteAct, DeleteAct, ClearAct,
                Separator2, SelectAllAct, NCountActs
              };
         QAction *separatorAction = nullptr;
         // separator we want is right after Delete right now.
         const int idx = actionList.indexOf(actionList[DeleteAct]) + 1;
         if (idx < actionList.count()) {
             separatorAction = actionList.at(idx);
         }
         if (separatorAction) {
             QAction *clearAllAction = new QAction(QIcon::fromTheme(QStringLiteral("edit-clear")), tr("C&lear"), this);
             clearAllAction->setShortcuts(QKeySequence::keyBindings(QKeySequence::DeleteCompleteLine));
             connect(clearAllAction, &QAction::triggered, this, &QLineEdit::clear);
             if (text().isEmpty()) {
                 clearAllAction->setEnabled(false);
             }
             popup->insertAction(separatorAction, clearAllAction);
         }
     }
 
     // If a completion object is present and the input
     // widget is not read-only, show the Text Completion
     // menu item.
     if (compObj() && !isReadOnly() && KAuthorized::authorize(QStringLiteral("lineedit_text_completion"))) {
         QMenu *subMenu = popup->addMenu(QIcon::fromTheme(QStringLiteral("text-completion")), tr("Text Completion", "@title:menu"));
         connect(subMenu, SIGNAL(triggered(QAction*)),
                 this, SLOT(_k_completionMenuActivated(QAction*)));
 
         popup->addSeparator();
 
         QActionGroup *ag = new QActionGroup(this);
         d->noCompletionAction = ag->addAction(tr("None", "@item:inmenu Text Completion"));
         d->shellCompletionAction = ag->addAction(tr("Manual", "@item:inmenu Text Completion"));
         d->autoCompletionAction = ag->addAction(tr("Automatic", "@item:inmenu Text Completion"));
         d->popupCompletionAction = ag->addAction(tr("Dropdown List", "@item:inmenu Text Completion"));
         d->shortAutoCompletionAction = ag->addAction(tr("Short Automatic", "@item:inmenu Text Completion"));
         d->popupAutoCompletionAction = ag->addAction(tr("Dropdown List && Automatic", "@item:inmenu Text Completion"));
         subMenu->addActions(ag->actions());
 
         //subMenu->setAccel( KStandardShortcut::completion(), ShellCompletion );
 
         d->shellCompletionAction->setCheckable(true);
         d->noCompletionAction->setCheckable(true);
         d->popupCompletionAction->setCheckable(true);
         d->autoCompletionAction->setCheckable(true);
         d->shortAutoCompletionAction->setCheckable(true);
         d->popupAutoCompletionAction->setCheckable(true);
 
         d->shellCompletionAction->setEnabled(!d->disableCompletionMap[ KCompletion::CompletionShell ]);
         d->noCompletionAction->setEnabled(!d->disableCompletionMap[ KCompletion::CompletionNone ]);
         d->popupCompletionAction->setEnabled(!d->disableCompletionMap[ KCompletion::CompletionPopup ]);
         d->autoCompletionAction->setEnabled(!d->disableCompletionMap[ KCompletion::CompletionAuto ]);
         d->shortAutoCompletionAction->setEnabled(!d->disableCompletionMap[ KCompletion::CompletionMan ]);
         d->popupAutoCompletionAction->setEnabled(!d->disableCompletionMap[ KCompletion::CompletionPopupAuto ]);
 
         const KCompletion::CompletionMode mode = completionMode();
         d->noCompletionAction->setChecked(mode == KCompletion::CompletionNone);
         d->shellCompletionAction->setChecked(mode == KCompletion::CompletionShell);
         d->popupCompletionAction->setChecked(mode == KCompletion::CompletionPopup);
         d->autoCompletionAction->setChecked(mode == KCompletion::CompletionAuto);
         d->shortAutoCompletionAction->setChecked(mode == KCompletion::CompletionMan);
         d->popupAutoCompletionAction->setChecked(mode == KCompletion::CompletionPopupAuto);
 
         const KCompletion::CompletionMode defaultMode = KCompletion::CompletionPopup;
         if (mode != defaultMode && !d->disableCompletionMap[ defaultMode ]) {
             subMenu->addSeparator();
             d->defaultAction = subMenu->addAction(tr("Default", "@item:inmenu Text Completion"));
         }
     }
 
     return popup;
 }
 
 void KLineEdit::contextMenuEvent(QContextMenuEvent *e)
 {
     if (QLineEdit::contextMenuPolicy() != Qt::DefaultContextMenu) {
         return;
     }
     QMenu *popup = createStandardContextMenu();
 
     // ### do we really need this?  Yes, Please do not remove!  This
     // allows applications to extend the popup menu without having to
     // inherit from this class! (DA)
     emit aboutToShowContextMenu(popup);
 
     popup->exec(e->globalPos());
     delete popup;
 }
 
 void KLineEditPrivate::_k_completionMenuActivated(QAction  *act)
 {
     Q_Q(KLineEdit);
     KCompletion::CompletionMode oldMode = q->completionMode();
 
     if (act == noCompletionAction) {
         q->setCompletionMode(KCompletion::CompletionNone);
     } else if (act ==  shellCompletionAction) {
         q->setCompletionMode(KCompletion::CompletionShell);
     } else if (act == autoCompletionAction) {
         q->setCompletionMode(KCompletion::CompletionAuto);
     } else if (act == popupCompletionAction) {
         q->setCompletionMode(KCompletion::CompletionPopup);
     } else if (act == shortAutoCompletionAction) {
         q->setCompletionMode(KCompletion::CompletionMan);
     } else if (act == popupAutoCompletionAction) {
         q->setCompletionMode(KCompletion::CompletionPopupAuto);
     } else if (act == defaultAction) {
         q->setCompletionMode(KCompletion::CompletionPopup);
     } else {
         return;
     }
 
     if (oldMode != q->completionMode()) {
         if ((oldMode == KCompletion::CompletionPopup ||
                 oldMode == KCompletion::CompletionPopupAuto) &&
                 completionBox && completionBox->isVisible()) {
             completionBox->hide();
         }
         emit q->completionModeChanged(q->completionMode());
     }
 }
 
 bool KLineEdit::event(QEvent *ev)
 {
     Q_D(KLineEdit);
     KCursor::autoHideEventFilter(this, ev);
     if (ev->type() == QEvent::ShortcutOverride) {
         QKeyEvent *e = static_cast<QKeyEvent *>(ev);
         if (d->overrideShortcut(e)) {
             ev->accept();
         }
     } else if (ev->type() == QEvent::ApplicationPaletteChange
                || ev->type() == QEvent::PaletteChange) {
         // Assume the widget uses the application's palette
         QPalette p = QApplication::palette();
         d->previousHighlightedTextColor = p.color(QPalette::Normal, QPalette::HighlightedText);
         d->previousHighlightColor = p.color(QPalette::Normal, QPalette::Highlight);
         setUserSelection(d->userSelection);
     } else if (ev->type() == QEvent::ChildAdded) {
         QObject *obj = static_cast<QChildEvent*>(ev)->child();
         if (obj) {
             connect(obj, &QObject::objectNameChanged, this, [this, obj] {
                 if (obj->objectName() == QLatin1String("_q_qlineeditclearaction")) {
                     QAction *action = qobject_cast<QAction*>(obj);
                     connect(action, &QAction::triggered, this, &KLineEdit::clearButtonClicked);
                 }
             });
         }
     }
 
     return QLineEdit::event(ev);
 }
 
 #if KCOMPLETION_BUILD_DEPRECATED_SINCE(5, 0)
 void KLineEdit::setUrlDropsEnabled(bool enable)
 {
     Q_D(KLineEdit);
     if (enable && !d->handleURLDrops) {
         installEventFilter(d->urlDropEventFilter);
         d->handleURLDrops = true;
     } else if (!enable && d->handleURLDrops) {
         removeEventFilter(d->urlDropEventFilter);
         d->handleURLDrops = false;
     }
 }
 #endif
 
 bool KLineEdit::urlDropsEnabled() const
 {
     Q_D(const KLineEdit);
     return d->handleURLDrops;
 }
 
 void KLineEdit::setTrapReturnKey(bool trap)
 {
     Q_D(KLineEdit);
     d->trapReturnKeyEvents = trap;
 }
 
 bool KLineEdit::trapReturnKey() const
 {
     Q_D(const KLineEdit);
     return d->trapReturnKeyEvents;
 }
 
 void KLineEdit::setUrl(const QUrl &url)
 {
     setText(url.toDisplayString());
 }
 
 void KLineEdit::setCompletionBox(KCompletionBox *box)
 {
     Q_D(KLineEdit);
     if (d->completionBox) {
         return;
     }
 
     d->completionBox = box;
     if (handleSignals()) {
         connect(d->completionBox, SIGNAL(currentTextChanged(QString)),
                 SLOT(_k_completionBoxTextChanged(QString)));
         connect(d->completionBox, &KCompletionBox::userCancelled,
                 this, &KLineEdit::userCancelled);
         connect(d->completionBox, SIGNAL(activated(QString)),
                 SIGNAL(completionBoxActivated(QString)));
         connect(d->completionBox, SIGNAL(activated(QString)),
                 SIGNAL(textEdited(QString)));
     }
 }
 
 /*
  * Set the line edit text without changing the modified flag. By default
  * calling setText resets the modified flag to false.
  */
 static void setEditText(KLineEdit *edit, const QString &text)
 {
     if (!edit) {
         return;
     }
 
     const bool wasModified = edit->isModified();
     edit->setText(text);
     edit->setModified(wasModified);
 }
 
 void KLineEdit::userCancelled(const QString &cancelText)
 {
     Q_D(KLineEdit);
     if (completionMode() != KCompletion::CompletionPopupAuto) {
         setEditText(this, cancelText);
     } else if (hasSelectedText()) {
         if (d->userSelection) {
             deselect();
         } else {
             d->autoSuggest = false;
             const int start = selectionStart();
             const QString s = text().remove(selectionStart(), selectedText().length());
             setEditText(this, s);
             setCursorPosition(start);
             d->autoSuggest = true;
         }
     }
 }
 
 bool KLineEditPrivate::overrideShortcut(const QKeyEvent *e)
 {
     Q_Q(KLineEdit);
     QList<QKeySequence> scKey;
 
     const int key = e->key() | e->modifiers();
     const KLineEdit::KeyBindingMap keys = q->keyBindingMap();
 
     if (keys[KLineEdit::TextCompletion].isEmpty()) {
         scKey = KStandardShortcut::shortcut(KStandardShortcut::TextCompletion);
     } else {
         scKey = keys[KLineEdit::TextCompletion];
     }
 
     if (scKey.contains(key)) {
         return true;
     }
 
     if (keys[KLineEdit::NextCompletionMatch].isEmpty()) {
         scKey = KStandardShortcut::shortcut(KStandardShortcut::NextCompletion);
     } else {
         scKey = keys[KLineEdit::NextCompletionMatch];
     }
 
     if (scKey.contains(key)) {
         return true;
     }
 
     if (keys[KLineEdit::PrevCompletionMatch].isEmpty()) {
         scKey = KStandardShortcut::shortcut(KStandardShortcut::PrevCompletion);
     } else {
         scKey = keys[KLineEdit::PrevCompletionMatch];
     }
 
     if (scKey.contains(key)) {
         return true;
     }
 
     // Override all the text manupilation accelerators...
     if (KStandardShortcut::copy().contains(key)) {
         return true;
     } else if (KStandardShortcut::paste().contains(key)) {
         return true;
     } else if (KStandardShortcut::cut().contains(key)) {
         return true;
     } else if (KStandardShortcut::undo().contains(key)) {
         return true;
     } else if (KStandardShortcut::redo().contains(key)) {
         return true;
     } else if (KStandardShortcut::deleteWordBack().contains(key)) {
         return true;
     } else if (KStandardShortcut::deleteWordForward().contains(key)) {
         return true;
     } else if (KStandardShortcut::forwardWord().contains(key)) {
         return true;
     } else if (KStandardShortcut::backwardWord().contains(key)) {
         return true;
     } else if (KStandardShortcut::beginningOfLine().contains(key)) {
         return true;
     } else if (KStandardShortcut::endOfLine().contains(key)) {
         return true;
     }
 
     // Shortcut overrides for shortcuts that QLineEdit handles
     // but doesn't dare force as "stronger than kaction shortcuts"...
     else if (e->matches(QKeySequence::SelectAll)) {
         return true;
     } else if (qApp->platformName() == QLatin1String("xcb") && (key == Qt::CTRL + Qt::Key_E || key == Qt::CTRL + Qt::Key_U)) {
         return true;
     }
 
     if (completionBox && completionBox->isVisible()) {
         const int key = e->key();
         const Qt::KeyboardModifiers modifiers = e->modifiers();
         if ((key == Qt::Key_Backtab || key == Qt::Key_Tab) &&
                 (modifiers == Qt::NoModifier || (modifiers & Qt::ShiftModifier))) {
             return true;
         }
     }
 
     return false;
 }
 
 void KLineEdit::setCompletedItems(const QStringList &items, bool autoSuggest)
 {
     Q_D(KLineEdit);
     QString txt;
     if (d->completionBox && d->completionBox->isVisible()) {
         // The popup is visible already - do the matching on the initial string,
         // not on the currently selected one.
         txt = completionBox()->cancelledText();
     } else {
         txt = text();
     }
 
     if (!items.isEmpty() &&
             !(items.count() == 1 && txt == items.first())) {
         // create completion box if non-existent
         completionBox();
 
         if (d->completionBox->isVisible()) {
             QListWidgetItem *currentItem = d->completionBox->currentItem();
 
             QString currentSelection;
             if (currentItem != nullptr) {
                 currentSelection = currentItem->text();
             }
 
             d->completionBox->setItems(items);
 
             const QList<QListWidgetItem *> matchedItems = d->completionBox->findItems(currentSelection, Qt::MatchExactly);
             QListWidgetItem *matchedItem = matchedItems.isEmpty() ? nullptr : matchedItems.first();
 
             if (matchedItem) {
                 const bool blocked = d->completionBox->blockSignals(true);
                 d->completionBox->setCurrentItem(matchedItem);
                 d->completionBox->blockSignals(blocked);
             } else {
                 d->completionBox->setCurrentRow(-1);
             }
         } else { // completion box not visible yet -> show it
             if (!txt.isEmpty()) {
                 d->completionBox->setCancelledText(txt);
             }
             d->completionBox->setItems(items);
             d->completionBox->popup();
         }
 
         if (d->autoSuggest && autoSuggest) {
             const int index = items.first().indexOf(txt);
             const QString newText = items.first().mid(index);
             setUserSelection(false); // can be removed? setCompletedText sets it anyway
             setCompletedText(newText, true);
         }
     } else {
         if (d->completionBox && d->completionBox->isVisible()) {
             d->completionBox->hide();
         }
     }
 }
 
 KCompletionBox *KLineEdit::completionBox(bool create)
 {
     Q_D(KLineEdit);
     if (create && !d->completionBox) {
         setCompletionBox(new KCompletionBox(this));
         d->completionBox->setObjectName(QStringLiteral("completion box"));
         d->completionBox->setFont(font());
     }
 
     return d->completionBox;
 }
 
 void KLineEdit::setCompletionObject(KCompletion *comp, bool handle)
 {
     KCompletion *oldComp = compObj();
     if (oldComp && handleSignals())
         disconnect(oldComp, SIGNAL(matches(QStringList)),
                    this, SLOT(setCompletedItems(QStringList)));
 
     if (comp && handle)
         connect(comp, SIGNAL(matches(QStringList)),
                 this, SLOT(setCompletedItems(QStringList)));
 
     KCompletionBase::setCompletionObject(comp, handle);
 }
 
 void KLineEdit::setUserSelection(bool userSelection)
 {
     Q_D(KLineEdit);
     //if !d->userSelection && userSelection we are accepting a completion,
     //so trigger an update
 
     if (!d->userSelection && userSelection) {
         d->updateUserText(text());
     }
 
     QPalette p = palette();
 
     if (userSelection) {
         p.setColor(QPalette::Highlight, d->previousHighlightColor);
         p.setColor(QPalette::HighlightedText, d->previousHighlightedTextColor);
     } else {
         QColor color = p.color(QPalette::Disabled, QPalette::Text);
         p.setColor(QPalette::HighlightedText, color);
         color = p.color(QPalette::Active, QPalette::Base);
         p.setColor(QPalette::Highlight, color);
     }
 
     d->userSelection = userSelection;
     setPalette(p);
 }
 
 void KLineEditPrivate::_k_restoreSelectionColors()
 {
     Q_Q(KLineEdit);
     if (disableRestoreSelection) {
         return;
     }
 
     q->setUserSelection(true);
 }
 
 void KLineEditPrivate::_k_completionBoxTextChanged(const QString &text)
 {
     Q_Q(KLineEdit);
     if (!text.isEmpty()) {
         q->setText(text);
         q->setModified(true);
         q->end(false);   // force cursor at end
     }
 }
 
 QString KLineEdit::originalText() const
 {
     Q_D(const KLineEdit);
     if (d->enableSqueezedText && isReadOnly()) {
         return d->squeezedText;
     }
 
     return text();
 }
 
 QString KLineEdit::userText() const
 {
     Q_D(const KLineEdit);
     return d->userText;
 }
 
 bool KLineEdit::autoSuggest() const
 {
     Q_D(const KLineEdit);
     return d->autoSuggest;
 }
 
 void KLineEdit::paintEvent(QPaintEvent *ev)
 {
     Q_D(KLineEdit);
     if (echoMode() == Password && d->threeStars) {
         // ### hack alert!
         // QLineEdit has currently no hooks to modify the displayed string.
         // When we call setText(), an update() is triggered and we get
         // into an infinite recursion.
         // Qt offers the setUpdatesEnabled() method, but when we re-enable
         // them, update() is triggered, and we get into the same recursion.
         // To work around this problem, we set/clear the internal Qt flag which
         // marks the updatesDisabled state manually.
         setAttribute(Qt::WA_UpdatesDisabled, true);
         blockSignals(true);
         const QString oldText = text();
         const bool isModifiedState = isModified(); // save modified state because setText resets it
         setText(oldText + oldText + oldText);
         QLineEdit::paintEvent(ev);
         setText(oldText);
         setModified(isModifiedState);
         blockSignals(false);
         setAttribute(Qt::WA_UpdatesDisabled, false);
     } else {
         QLineEdit::paintEvent(ev);
     }
 }
 
 #if KCOMPLETION_BUILD_DEPRECATED_SINCE(5, 0)
 void KLineEdit::setClickMessage(const QString &msg)
 {
     setPlaceholderText(msg);
 }
 #endif
 
 #if KCOMPLETION_BUILD_DEPRECATED_SINCE(4, 5)
 void KLineEdit::setContextMenuEnabled(bool showMenu)
 {
     QLineEdit::setContextMenuPolicy(showMenu ? Qt::DefaultContextMenu : Qt::NoContextMenu);
 }
 #endif
 
 #if KCOMPLETION_BUILD_DEPRECATED_SINCE(4, 5)
 bool KLineEdit::isContextMenuEnabled() const
 {
     return (contextMenuPolicy() == Qt::DefaultContextMenu);
 }
 #endif
 
 void KLineEdit::setPasswordMode(bool passwordMode)
 {
     Q_D(KLineEdit);
     if (passwordMode) {
         KConfigGroup cg(KSharedConfig::openConfig(), "Passwords");
         const QString val = cg.readEntry("EchoMode", "OneStar");
         if (val == QLatin1String("NoEcho")) {
             setEchoMode(NoEcho);
         } else {
             d->threeStars = (val == QLatin1String("ThreeStars"));
             setEchoMode(Password);
         }
     } else {
         setEchoMode(Normal);
     }
 }
 
 bool KLineEdit::passwordMode() const
 {
     return echoMode() == NoEcho || echoMode() == Password;
 }
 
 void KLineEdit::doCompletion(const QString &text)
 {
     Q_D(KLineEdit);
     if (emitSignals()) {
         emit completion(text); // emit when requested...
     }
     d->completionRunning = true;
     if (handleSignals()) {
         makeCompletion(text);  // handle when requested...
     }
     d->completionRunning = false;
 }
 
 #include "moc_klineedit.cpp"