File indexing completed on 2024-05-12 05:46:53

 /* This file is part of the KDE libraries
 
    Copyright (c) 2000,2001 Dawit Alemayehu <adawit@kde.org>
    Copyright (c) 2000,2001 Carsten Pfeiffer <pfeiffer@kde.org>
    Copyright (c) 2000 Stefan Schimanski <1Stein@gmx.de>
 
    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 "kcombobox.h"
 
 #include <kcompletionbox.h>
 #include <klineedit.h>
 
 #include <QUrl>
 #include <QPointer>
 #include <QMenu>
 
 class KComboBoxPrivate
 {
 public:
     KComboBoxPrivate(KComboBox *parent)
         : q_ptr(parent)
     {
     }
     ~KComboBoxPrivate()
     {
     }
 
     /**
      * Initializes the variables upon construction.
      */
     void init();
 
     void _k_lineEditDeleted();
 
     KLineEdit *klineEdit = nullptr;
     bool trapReturnKey = false;
     KComboBox * const q_ptr;
     Q_DECLARE_PUBLIC(KComboBox)
 };
 
 void KComboBoxPrivate::init()
 {
     Q_Q(KComboBox);
 }
 
 void KComboBoxPrivate::_k_lineEditDeleted()
 {
     Q_Q(KComboBox);
     // yes, we need those ugly casts due to the multiple inheritance
     // sender() is guaranteed to be a KLineEdit (see the connect() to the
     // destroyed() signal
     const KCompletionBase *base = static_cast<const KCompletionBase *>(static_cast<const KLineEdit *>(q->sender()));
 
     // is it our delegate, that is destroyed?
     if (base == q->delegate()) {
         q->setDelegate(nullptr);
     }
 }
 
 
 KComboBox::KComboBox(QWidget *parent)
     : QComboBox(parent),
       d_ptr(new KComboBoxPrivate(this))
 {
     Q_D(KComboBox);
     d->init();
 }
 
 KComboBox::KComboBox(bool rw, QWidget *parent)
     : QComboBox(parent),
       d_ptr(new KComboBoxPrivate(this))
 {
     Q_D(KComboBox);
     d->init();
     setEditable(rw);
 }
 
 KComboBox::~KComboBox()
 {
 }
 
 bool KComboBox::contains(const QString &text) const
 {
     if (text.isEmpty()) {
         return false;
     }
 
     const int itemCount = count();
     for (int i = 0; i < itemCount; ++i) {
         if (itemText(i) == text) {
             return true;
         }
     }
     return false;
 }
 
 int KComboBox::cursorPosition() const
 {
     return (isEditable()) ? lineEdit()->cursorPosition() : -1;
 }
 
 void KComboBox::setAutoCompletion(bool autocomplete)
 {
     Q_D(KComboBox);
     if (d->klineEdit) {
         if (autocomplete) {
             d->klineEdit->setCompletionMode(KCompletion::CompletionAuto);
             setCompletionMode(KCompletion::CompletionAuto);
         } else {
             d->klineEdit->setCompletionMode(KCompletion::CompletionPopup);
             setCompletionMode(KCompletion::CompletionPopup);
         }
     }
 }
 
 bool KComboBox::autoCompletion() const
 {
     return completionMode() == KCompletion::CompletionAuto;
 }
 
 #if KCOMPLETION_BUILD_DEPRECATED_SINCE(4, 5)
 void KComboBox::setContextMenuEnabled(bool showMenu)
 {
     Q_D(KComboBox);
     if (d->klineEdit) {
         d->klineEdit->setContextMenuPolicy(showMenu ? Qt::DefaultContextMenu : Qt::NoContextMenu);
     }
 }
 #endif
 
 #if KCOMPLETION_BUILD_DEPRECATED_SINCE(5, 0)
 void KComboBox::setUrlDropsEnabled(bool enable)
 {
     Q_D(KComboBox);
     if (d->klineEdit) {
         d->klineEdit->setUrlDropsEnabled(enable);
     }
 }
 #endif
 
 bool KComboBox::urlDropsEnabled() const
 {
     Q_D(const KComboBox);
     return d->klineEdit && d->klineEdit->urlDropsEnabled();
 }
 
 void KComboBox::setCompletedText(const QString &text, bool marked)
 {
     Q_D(KComboBox);
     if (d->klineEdit) {
         d->klineEdit->setCompletedText(text, marked);
     }
 }
 
 void KComboBox::setCompletedText(const QString &text)
 {
     Q_D(KComboBox);
     if (d->klineEdit) {
         d->klineEdit->setCompletedText(text);
     }
 }
 
 void KComboBox::makeCompletion(const QString &text)
 {
     Q_D(KComboBox);
     if (d->klineEdit) {
         d->klineEdit->makeCompletion(text);
     }
 
     else { // read-only combo completion
         if (text.isNull() || !view()) {
             return;
         }
 
         view()->keyboardSearch(text);
     }
 }
 
 void KComboBox::rotateText(KCompletionBase::KeyBindingType type)
 {
     Q_D(KComboBox);
     if (d->klineEdit) {
         d->klineEdit->rotateText(type);
     }
 }
 
 void KComboBox::setTrapReturnKey(bool trap)
 {
     Q_D(KComboBox);
     d->trapReturnKey = trap;
 
     if (d->klineEdit) {
         d->klineEdit->setTrapReturnKey(trap);
     } else {
         qWarning("KComboBox::setTrapReturnKey not supported with a non-KLineEdit.");
     }
 }
 
 bool KComboBox::trapReturnKey() const
 {
     Q_D(const KComboBox);
     return d->trapReturnKey;
 }
 
 void KComboBox::setEditUrl(const QUrl &url)
 {
     QComboBox::setEditText(url.toDisplayString());
 }
 
 void KComboBox::addUrl(const QUrl &url)
 {
     QComboBox::addItem(url.toDisplayString());
 }
 
 void KComboBox::addUrl(const QIcon &icon, const QUrl &url)
 {
     QComboBox::addItem(icon, url.toDisplayString());
 }
 
 void KComboBox::insertUrl(int index, const QUrl &url)
 {
     QComboBox::insertItem(index, url.toDisplayString());
 }
 
 void KComboBox::insertUrl(int index, const QIcon &icon, const QUrl &url)
 {
     QComboBox::insertItem(index, icon, url.toDisplayString());
 }
 
 void KComboBox::changeUrl(int index, const QUrl &url)
 {
     QComboBox::setItemText(index, url.toDisplayString());
 }
 
 void KComboBox::changeUrl(int index, const QIcon &icon, const QUrl &url)
 {
     QComboBox::setItemIcon(index, icon);
     QComboBox::setItemText(index, url.toDisplayString());
 }
 
 void KComboBox::setCompletedItems(const QStringList &items, bool autosubject)
 {
     Q_D(KComboBox);
     if (d->klineEdit) {
         d->klineEdit->setCompletedItems(items, autosubject);
     }
 }
 
 KCompletionBox *KComboBox::completionBox(bool create)
 {
     Q_D(KComboBox);
     if (d->klineEdit) {
         return d->klineEdit->completionBox(create);
     }
     return nullptr;
 }
 
 QSize KComboBox::minimumSizeHint() const
 {
     Q_D(const KComboBox);
     QSize size = QComboBox::minimumSizeHint();
     if (isEditable() && d->klineEdit) {
         // if it's a KLineEdit and it's editable add the clear button size
         // to the minimum size hint, otherwise looks ugly because the
         // clear button will cover the last 2/3 letters of the biggest entry
         QSize bs = d->klineEdit->clearButtonUsedSize();
         if (bs.isValid()) {
             size.rwidth() += bs.width();
             size.rheight() = qMax(size.height(), bs.height());
         }
     }
     return size;
 }
 
 void KComboBox::setLineEdit(QLineEdit *edit)
 {
     Q_D(KComboBox);
     if (!isEditable() && edit &&
             !qstrcmp(edit->metaObject()->className(), "QLineEdit")) {
         // uic generates code that creates a read-only KComboBox and then
         // calls combo->setEditable(true), which causes QComboBox to set up
         // a dumb QLineEdit instead of our nice KLineEdit.
         // As some KComboBox features rely on the KLineEdit, we reject
         // this order here.
         delete edit;
         KLineEdit *kedit = new KLineEdit(this);
 
         if (isEditable()) {
             kedit->setClearButtonEnabled(true);
         }
 
         edit = kedit;
     }
 
     // reuse an existing completion object, if it does not belong to the previous
     // line edit and gets destroyed with it
     QPointer<KCompletion> completion = compObj();
 
     QComboBox::setLineEdit(edit);
     edit->setCompleter(nullptr); // remove Qt's builtin completer (set by setLineEdit), we have our own
     d->klineEdit = qobject_cast<KLineEdit *>(edit);
     setDelegate(d->klineEdit);
 
     if (completion && d->klineEdit) {
         d->klineEdit->setCompletionObject(completion);
     }
 
     // Connect the returnPressed signal for both Q[K]LineEdits'
     if (edit) {
         connect(edit, QOverload<>::of(&QLineEdit::returnPressed),
                 this, QOverload<>::of(&KComboBox::returnPressed));
     }
 
     if (d->klineEdit) {
         // someone calling KComboBox::setEditable(false) destroys our
         // line edit without us noticing. And KCompletionBase::delegate would
         // be a dangling pointer then, so prevent that. Note: only do this
         // when it is a KLineEdit!
         connect(edit, SIGNAL(destroyed()), SLOT(_k_lineEditDeleted()));
 
         connect(d->klineEdit, QOverload<const QString&>::of(&KLineEdit::returnPressed),
                 this, QOverload<const QString&>::of(&KComboBox::returnPressed));
 
         connect(d->klineEdit, &KLineEdit::completion,
                 this, &KComboBox::completion);
 
         connect(d->klineEdit, &KLineEdit::substringCompletion,
                 this, &KComboBox::substringCompletion);
 
         connect(d->klineEdit, &KLineEdit::textRotation,
                 this, &KComboBox::textRotation);
 
         connect(d->klineEdit, &KLineEdit::completionModeChanged,
                 this, &KComboBox::completionModeChanged);
 
         connect(d->klineEdit, &KLineEdit::aboutToShowContextMenu,
                 this, &KComboBox::aboutToShowContextMenu);
 
         // match the declaration of the deprecated signal
 #if QT_DEPRECATED_SINCE(5, 15) || QT_VERSION < QT_VERSION_CHECK(5, 14, 0)
         connect(d->klineEdit, &KLineEdit::completionBoxActivated,
                 this, QOverload<const QString&>::of(&QComboBox::activated));
 #endif
 #if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
         connect(d->klineEdit, &KLineEdit::completionBoxActivated,
                 this, QOverload<const QString&>::of(&QComboBox::textActivated));
 #endif
 
         d->klineEdit->setTrapReturnKey(d->trapReturnKey);
     }
 }
 
 void KComboBox::setCurrentItem(const QString &item, bool insert, int index)
 {
     int sel = -1;
 
     const int itemCount = count();
     for (int i = 0; i < itemCount; ++i) {
         if (itemText(i) == item) {
             sel = i;
             break;
         }
     }
 
     if (sel == -1 && insert) {
         if (index >= 0) {
             insertItem(index, item);
             sel = index;
         } else {
             addItem(item);
             sel = count() - 1;
         }
     }
     setCurrentIndex(sel);
 }
 
 void KComboBox::setEditable(bool editable)
 {
     if (editable == isEditable()) {
         return;
     }
 
     if (editable) {
         // Create a KLineEdit instead of a QLineEdit
         // Compared to QComboBox::setEditable, we might be missing the SH_ComboBox_Popup code though...
         // If a style needs this, then we'll need to call QComboBox::setEditable and then setLineEdit again
         KLineEdit *edit = new KLineEdit(this);
         edit->setClearButtonEnabled(true);
         setLineEdit(edit);
     } else {
         QComboBox::setEditable(editable);
     }
 }
 
 #include "moc_kcombobox.cpp"