File indexing completed on 2024-09-22 04:50:01

 /*
   SPDX-FileCopyrightText: 2010 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
   SPDX-FileCopyrightText: 2010 Andras Mantia <andras@kdab.com>
 
   SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "filteractionwidget.h"
 #include "filter/filteractions/filteraction.h"
 #include "filter/filteractions/filteractiondict.h"
 #include "filter/filtermanager.h"
 #include "filter/mailfilter.h"
 #include "mailcommon_debug.h"
 
 #include <KLocalizedString>
 #include <QComboBox>
 #include <QIcon>
 #include <QPushButton>
 
 #include <QGridLayout>
 #include <QLabel>
 
 using namespace MailCommon;
 
 //=============================================================================
 //
 // class FilterActionWidget
 //
 //=============================================================================
 
 class Q_DECL_HIDDEN FilterActionWidget::FilterActionWidgetPrivate
 {
 public:
     FilterActionWidgetPrivate(FilterActionWidget *qq)
         : q(qq)
     {
     }
 
     ~FilterActionWidgetPrivate()
     {
         qDeleteAll(mActionList);
         mActionList.clear();
     }
 
     void setFilterAction(QWidget *widget = nullptr);
 
     void slotFilterTypeChanged(int index);
     void slotAddWidget();
     void slotRemoveWidget();
 
     FilterActionWidget *const q;
     QList<MailCommon::FilterAction *> mActionList;
     QComboBox *mComboBox = nullptr;
     QPushButton *mAdd = nullptr;
     QPushButton *mRemove = nullptr;
 
     QGridLayout *mLayout = nullptr;
 };
 
 void FilterActionWidget::FilterActionWidgetPrivate::setFilterAction(QWidget *widget)
 {
     if (mLayout->itemAtPosition(1, 2)) {
         delete mLayout->itemAtPosition(1, 2)->widget();
     }
 
     if (widget) {
         mLayout->addWidget(widget, 1, 2);
     } else {
         mLayout->addWidget(new QLabel(i18n("Please select an action."), q), 1, 2);
     }
 }
 
 void FilterActionWidget::FilterActionWidgetPrivate::slotAddWidget()
 {
     Q_EMIT q->addFilterWidget(q);
     Q_EMIT q->filterModified();
 }
 
 void FilterActionWidget::FilterActionWidgetPrivate::slotRemoveWidget()
 {
     Q_EMIT q->removeFilterWidget(q);
     Q_EMIT q->filterModified();
 }
 
 void FilterActionWidget::FilterActionWidgetPrivate::slotFilterTypeChanged(int index)
 {
     setFilterAction(index < mActionList.count() ? mActionList.at(index)->createParamWidget(q) : nullptr);
 }
 
 FilterActionWidget::FilterActionWidget(QWidget *parent)
     : QWidget(parent)
     , d(new FilterActionWidgetPrivate(this))
 {
     auto mainLayout = new QHBoxLayout(this);
     mainLayout->setContentsMargins({});
     auto widget = new QWidget(this);
     mainLayout->addWidget(widget);
 
     d->mLayout = new QGridLayout(widget);
     d->mLayout->setContentsMargins({});
 
     d->mComboBox = new QComboBox(widget);
     d->mComboBox->setMinimumWidth(50);
     d->mComboBox->setEditable(false);
     Q_ASSERT(d->mComboBox);
     d->mLayout->addWidget(d->mComboBox, 1, 1);
     d->mAdd = new QPushButton(widget);
     d->mAdd->setIcon(QIcon::fromTheme(QStringLiteral("list-add")));
     d->mAdd->setSizePolicy(QSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed));
 
     d->mRemove = new QPushButton(widget);
     d->mRemove->setIcon(QIcon::fromTheme(QStringLiteral("list-remove")));
     d->mRemove->setSizePolicy(QSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed));
 
     mainLayout->setSpacing(4);
 
     int index;
     QList<FilterActionDesc *> list = MailCommon::FilterManager::filterActionDict()->list();
     QList<FilterActionDesc *>::const_iterator it;
     QList<FilterActionDesc *>::const_iterator end(list.constEnd());
     for (index = 0, it = list.constBegin(); it != end; ++it, ++index) {
         // create an instance:
         FilterAction *action = (*it)->create();
 
         // append to the list of actions:
         d->mActionList.append(action);
 
         // add (i18n-ized) name to combo box
         d->mComboBox->addItem((*it)->label, (*it)->name);
 
         // Register the FilterAction modification signal
         connect(action, &FilterAction::filterActionModified, this, &FilterActionWidget::filterModified);
     }
 
     // widget for the case where no action is selected.
     d->mComboBox->addItem(QStringLiteral(" "));
     d->mComboBox->setCurrentIndex(index);
 
     // don't show scroll bars.
     d->mComboBox->setMaxCount(d->mComboBox->count());
 
     // layout management:
     // o the combo box is not to be made larger than it's sizeHint(),
     //   the parameter widget should grow instead.
     // o the whole widget takes all space horizontally, but is fixed vertically.
     d->mComboBox->adjustSize();
     d->mComboBox->setSizePolicy(QSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed));
     setSizePolicy(QSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed));
     updateGeometry();
 
     // redirect focus to the filter action combo box
     setFocusProxy(d->mComboBox);
 
     // now connect the combo box and the widget stack
     connect(d->mComboBox, &QComboBox::activated, this, [this](int index) {
         d->slotFilterTypeChanged(index);
     });
 
     connect(d->mComboBox, &QComboBox::activated, this, &FilterActionWidget::filterModified);
 
     connect(d->mAdd, &QPushButton::clicked, this, [this]() {
         d->slotAddWidget();
     });
     connect(d->mRemove, &QPushButton::clicked, this, [this]() {
         d->slotRemoveWidget();
     });
 
     d->setFilterAction();
     d->mLayout->addWidget(d->mAdd, 1, 3);
     d->mLayout->addWidget(d->mRemove, 1, 4);
 }
 
 FilterActionWidget::~FilterActionWidget() = default;
 
 void FilterActionWidget::updateAddRemoveButton(bool addButtonEnabled, bool removeButtonEnabled)
 {
     d->mAdd->setEnabled(addButtonEnabled);
     d->mRemove->setEnabled(removeButtonEnabled);
 }
 
 void FilterActionWidget::setAction(const FilterAction *action)
 {
     bool found = false;
     const int count = d->mComboBox->count() - 1; // last entry is the empty one
 
     const QString name = action ? action->name() : QString();
 
     // find the index of typeOf(action) in mComboBox
     // and clear the other widgets on the way.
     for (int i = 0; i < count; ++i) {
         if (action && d->mComboBox->itemData(i) == name) {
             d->setFilterAction(d->mActionList.at(i)->createParamWidget(this));
 
             //...set the parameter widget to the settings
             // of aAction...
             action->setParamWidgetValue(d->mLayout->itemAtPosition(1, 2)->widget());
 
             //...and show the correct entry of
             // the combo box
             d->mComboBox->setCurrentIndex(i); // (mm) also raise the widget, but doesn't
             found = true;
         }
     }
 
     if (found) {
         return;
     }
 
     // not found, so set the empty widget
     d->setFilterAction();
 
     d->mComboBox->setCurrentIndex(count); // last item
 }
 
 FilterAction *FilterActionWidget::action() const
 {
     // look up the action description via the label
     // returned by KComboBox::currentText()...
     FilterActionDesc *description = MailCommon::FilterManager::filterActionDict()->value(d->mComboBox->itemData(d->mComboBox->currentIndex()).toString());
 
     if (description) {
         // ...create an instance...
         FilterAction *action = description->create();
         if (action) {
             // ...and apply the setting of the parameter widget.
             action->applyParamWidgetValue(d->mLayout->itemAtPosition(1, 2)->widget());
             return action;
         }
     }
 
     return nullptr;
 }
 
 //=============================================================================
 //
 // class FilterActionWidgetLister (the filter action editor)
 //
 //=============================================================================
 
 class FilterActionWidgetLister::FilterActionWidgetListerPrivate
 {
 public:
     FilterActionWidgetListerPrivate(FilterActionWidgetLister *qq)
         : q(qq)
     {
     }
 
     void regenerateActionListFromWidgets();
 
     FilterActionWidgetLister *const q;
     QList<MailCommon::FilterAction *> *mActionList = nullptr;
 };
 
 void FilterActionWidgetLister::FilterActionWidgetListerPrivate::regenerateActionListFromWidgets()
 {
     if (!mActionList) {
         return;
     }
 
     mActionList->clear();
 
     const auto lst = q->widgets();
     for (const QWidget *widget : lst) {
         FilterAction *action = qobject_cast<const FilterActionWidget *>(widget)->action();
         if (action) {
             mActionList->append(action);
         }
     }
     q->updateAddRemoveButton();
 }
 
 FilterActionWidgetLister::FilterActionWidgetLister(QWidget *parent)
     : KWidgetLister(false, 1, MailFilter::filterActionsMaximumSize(), parent)
     , d(new FilterActionWidgetListerPrivate(this))
 {
 }
 
 FilterActionWidgetLister::~FilterActionWidgetLister() = default;
 
 void FilterActionWidgetLister::setActionList(QList<FilterAction *> *list)
 {
     Q_ASSERT(list);
     if (d->mActionList && d->mActionList != list) {
         d->regenerateActionListFromWidgets();
     }
 
     d->mActionList = list;
 
     static_cast<QWidget *>(parent())->setEnabled(true);
 
     if (!widgets().isEmpty()) { // move this below next 'if'?
         widgets().constFirst()->blockSignals(true);
     }
 
     if (list->isEmpty()) {
         slotClear();
         connectWidget(widgets().constFirst(), nullptr);
         widgets().constFirst()->blockSignals(false);
         return;
     }
 
     int superfluousItems = (int)d->mActionList->count() - widgetsMaximum();
     if (superfluousItems > 0) {
         qCDebug(MAILCOMMON_LOG) << "FilterActionWidgetLister: Clipping action list to" << widgetsMaximum() << "items!";
 
         for (; superfluousItems; superfluousItems--) {
             d->mActionList->removeLast();
         }
     }
 
     // set the right number of widgets
     setNumberOfShownWidgetsTo(d->mActionList->count());
 
     // load the actions into the widgets
     QList<QWidget *> widgetList = widgets();
     QList<FilterAction *>::const_iterator aEnd(d->mActionList->constEnd());
     QList<QWidget *>::ConstIterator wIt = widgetList.constBegin();
     QList<QWidget *>::ConstIterator wEnd = widgetList.constEnd();
     for (QList<FilterAction *>::const_iterator aIt = d->mActionList->constBegin(); (aIt != aEnd && wIt != wEnd); ++aIt, ++wIt) {
         connectWidget((*wIt), (*aIt));
     }
     widgets().constFirst()->blockSignals(false);
     updateAddRemoveButton();
 }
 
 void FilterActionWidgetLister::connectWidget(QWidget *widget, FilterAction *filterAction)
 {
     auto w = qobject_cast<FilterActionWidget *>(widget);
     if (filterAction) {
         w->setAction(filterAction);
     }
     connect(w, &FilterActionWidget::filterModified, this, &FilterActionWidgetLister::filterModified, Qt::UniqueConnection);
     reconnectWidget(w);
 }
 
 void FilterActionWidgetLister::slotAddWidget(QWidget *w)
 {
     addWidgetAfterThisWidget(w);
     updateAddRemoveButton();
 }
 
 void FilterActionWidgetLister::slotRemoveWidget(QWidget *w)
 {
     removeWidget(w);
     updateAddRemoveButton();
 }
 
 void FilterActionWidgetLister::updateAddRemoveButton()
 {
     QList<QWidget *> widgetList = widgets();
     const int numberOfWidget(widgetList.count());
     bool addButtonEnabled = false;
     bool removeButtonEnabled = false;
     if (numberOfWidget <= widgetsMinimum()) {
         addButtonEnabled = true;
         removeButtonEnabled = false;
     } else if (numberOfWidget >= widgetsMaximum()) {
         addButtonEnabled = false;
         removeButtonEnabled = true;
     } else {
         addButtonEnabled = true;
         removeButtonEnabled = true;
     }
     QList<QWidget *>::ConstIterator wIt = widgetList.constBegin();
     QList<QWidget *>::ConstIterator wEnd = widgetList.constEnd();
     for (; wIt != wEnd; ++wIt) {
         auto w = qobject_cast<FilterActionWidget *>(*wIt);
         w->updateAddRemoveButton(addButtonEnabled, removeButtonEnabled);
     }
 }
 
 void FilterActionWidgetLister::updateActionList()
 {
     d->regenerateActionListFromWidgets();
 }
 
 void FilterActionWidgetLister::reset()
 {
     if (d->mActionList) {
         d->regenerateActionListFromWidgets();
     }
 
     d->mActionList = nullptr;
     slotClear();
 
     static_cast<QWidget *>(parent())->setEnabled(false);
 }
 
 void FilterActionWidgetLister::reconnectWidget(FilterActionWidget *w)
 {
     connect(w, &FilterActionWidget::addFilterWidget, this, &FilterActionWidgetLister::slotAddWidget, Qt::UniqueConnection);
 
     connect(w, &FilterActionWidget::removeFilterWidget, this, &FilterActionWidgetLister::slotRemoveWidget, Qt::UniqueConnection);
 }
 
 QWidget *FilterActionWidgetLister::createWidget(QWidget *parent)
 {
     auto w = new FilterActionWidget(parent);
     reconnectWidget(w);
     return w;
 }
 
 void FilterActionWidgetLister::clearWidget(QWidget *widget)
 {
     if (widget) {
         auto w = static_cast<FilterActionWidget *>(widget);
         w->setAction(nullptr);
         w->disconnect(this);
         reconnectWidget(w);
         updateAddRemoveButton();
     }
 }
 
 #include "moc_filteractionwidget.cpp"