File indexing completed on 2024-04-28 16:54:26

 /*
     SPDX-FileCopyrightText: 2004 Esben Mose Hansen <kde@mosehansen.dk>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 #include "popupproxy.h"
 
 #include <QPixmap>
 #include <QStyle>
 #include <QStyleOption>
 
 #include <KLocalizedString>
 
 #include "historyitem.h"
 #include "klipperpopup.h"
 #include "utils.h"
 
 PopupProxy::PopupProxy(KlipperPopup *parent, int menu_height, int menu_width)
     : QObject(parent)
     , m_proxy_for_menu(parent)
     , m_spill_uuid()
     , m_menu_height(menu_height)
     , m_menu_width(menu_width)
 {
     if (!parent->history()->empty()) {
         m_spill_uuid = parent->history()->first()->uuid();
     }
     connect(parent->history(), &History::changed, this, &PopupProxy::slotHistoryChanged);
     connect(m_proxy_for_menu, SIGNAL(triggered(QAction *)), parent->history(), SLOT(slotMoveToTop(QAction *)));
 }
 
 void PopupProxy::slotHistoryChanged()
 {
     deleteMoreMenus();
 }
 
 void PopupProxy::deleteMoreMenus()
 {
     const QMenu *myParent = parent();
     if (myParent != m_proxy_for_menu) {
         QMenu *delme = m_proxy_for_menu;
         m_proxy_for_menu = static_cast<QMenu *>(m_proxy_for_menu->parent());
         while (m_proxy_for_menu != myParent) {
             delme = m_proxy_for_menu;
             m_proxy_for_menu = static_cast<QMenu *>(m_proxy_for_menu->parent());
         }
         // We are called probably from within the menus event-handler (triggered=>slotMoveToTop=>changed=>slotHistoryChanged=>deleteMoreMenus)
         // what can result in a crash if we just delete the menu here (#155196 and #165154) So, delay the delete.
         delme->deleteLater();
     }
 }
 
 int PopupProxy::buildParent(int index, const QRegularExpression &filter)
 {
     deleteMoreMenus();
     // Start from top of  history (again)
     m_spill_uuid = parent()->history()->empty() ? QByteArray() : parent()->history()->first()->uuid();
     if (filter.isValid()) {
         m_filter = filter;
     }
 
     return insertFromSpill(index);
 }
 
 KlipperPopup *PopupProxy::parent()
 {
     return static_cast<KlipperPopup *>(QObject::parent());
 }
 
 void PopupProxy::slotAboutToShow()
 {
     insertFromSpill();
 }
 
 void PopupProxy::tryInsertItem(HistoryItem const *const item, int &remainingHeight, const int index)
 {
     QAction *action = new QAction(m_proxy_for_menu);
     QPixmap image(item->image());
     if (image.isNull()) {
         // Squeeze text strings so that do not take up the entire screen (or more)
         QString text = m_proxy_for_menu->fontMetrics().elidedText(Utils::simplifiedText(item->text(), 1000), Qt::ElideRight, m_menu_width);
         text.replace(QLatin1Char('&'), QLatin1String("&&"));
         action->setText(text);
     } else {
         action->setIcon(QIcon(image));
     }
 
     action->setData(item->uuid());
 
     // if the m_proxy_for_menu is a submenu (aka a "More" menu) then it may the case, that there is no other action in that menu yet.
     QAction *before = index < m_proxy_for_menu->actions().count() ? m_proxy_for_menu->actions().at(index) : nullptr;
     // insert the new action to the m_proxy_for_menu
     m_proxy_for_menu->insertAction(before, action);
 
     // Determine height of a menu item.
     QStyleOptionMenuItem style_options;
     // It would be much easier to use QMenu::initStyleOptions. But that is protected, so until we have a better
     // excuse to subclass that, I'd rather implement this manually.
     // Note 2 properties, tabwidth and maxIconWidth, are not available from the public interface, so those are left out (probably not
     // important for height. Also, Exclusive checkType is disregarded as  I don't think we will ever use it)
     style_options.initFrom(m_proxy_for_menu);
     style_options.checkType = action->isCheckable() ? QStyleOptionMenuItem::NonExclusive : QStyleOptionMenuItem::NotCheckable;
     style_options.checked = action->isChecked();
     style_options.font = action->font();
     style_options.icon = action->icon();
     style_options.menuHasCheckableItems = true;
     style_options.menuRect = m_proxy_for_menu->rect();
     style_options.text = action->text();
 
     int font_height = QFontMetrics(m_proxy_for_menu->fontMetrics()).height();
 
     int itemheight = m_proxy_for_menu->style()->sizeFromContents(QStyle::CT_MenuItem, &style_options, QSize(0, font_height), m_proxy_for_menu).height();
     // Subtract the used height
     remainingHeight -= itemheight;
 }
 
 int PopupProxy::insertFromSpill(int index)
 {
     const History *history = parent()->history();
     // This menu is going to be filled, so we don't need the aboutToShow()
     // signal anymore
     disconnect(m_proxy_for_menu, nullptr, this, nullptr);
 
     // Insert history items into the current m_proxy_for_menu,
     // discarding any that doesn't match the current filter.
     // stop when the total number of items equal m_itemsPerMenu;
     int count = 0;
     int remainingHeight = m_menu_height - m_proxy_for_menu->sizeHint().height();
     auto item = history->find(m_spill_uuid);
     if (!item) {
         return count;
     }
     do {
         if (m_filter.match(item->text()).hasMatch()) {
             tryInsertItem(item.data(), remainingHeight, index++);
             count++;
         }
         item = history->find(item->next_uuid());
     } while (item && history->first() != item && remainingHeight >= 0);
     m_spill_uuid = item->uuid();
 
     // If there is more items in the history, insert a new "More..." menu and
     // make *this a proxy for that menu ('s content).
     if (history->first() && m_spill_uuid != history->first()->uuid()) {
         QMenu *moreMenu = new QMenu(i18n("&More"), m_proxy_for_menu);
         connect(moreMenu, &QMenu::aboutToShow, this, &PopupProxy::slotAboutToShow);
         QAction *before = index < m_proxy_for_menu->actions().count() ? m_proxy_for_menu->actions().at(index) : nullptr;
         m_proxy_for_menu->insertMenu(before, moreMenu);
         m_proxy_for_menu = moreMenu;
     }
 
     // Return the number of items inserted.
     return count;
 }