RListWidget Class Reference

#include <src/ckb/rlistwidget.h>

Inheritance diagram for RListWidget:

Collaboration diagram for RListWidget:

Signals
void	orderChanged ()

Public Member Functions
	RListWidget (QWidget *parent=0)

Private Slots
void	timerTick ()
void	enter (QListWidgetItem *item)
void	change (QListWidgetItem *item)

Private Member Functions
void	rescanItems ()

Private Attributes
QVariant	currentData
QList< QVariant >	previousItems
QVariant	dragged
QTimer	reorderTimer

Static Private Attributes
static const int	DATA_ROLE = Qt::UserRole + 100

Detailed Description

Definition at line 9 of file rlistwidget.h.

Constructor & Destructor Documentation

RListWidget::RListWidget ( QWidget *  parent = 0 )

explicit

Definition at line 4 of file rlistwidget.cpp.

References change(), enter(), reorderTimer, and timerTick().

                                        :
    QListWidget(parent)
{
    setDragDropMode(QAbstractItemView::InternalMove);
    setMovement(QListView::Snap);

    reorderTimer.setSingleShot(true);
    reorderTimer.setInterval(100);
    connect(&reorderTimer, SIGNAL(timeout()), this, SLOT(timerTick()));

    connect(this, SIGNAL(itemEntered(QListWidgetItem*)), this, SLOT(enter(QListWidgetItem*)));
    connect(this, SIGNAL(itemChanged(QListWidgetItem*)), this, SLOT(change(QListWidgetItem*)));
}

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Member Function Documentation

void RListWidget::change ( QListWidgetItem *  item )

privateslot

Definition at line 54 of file rlistwidget.cpp.

References reorderTimer.

Referenced by RListWidget().

                                             {
    reorderTimer.stop();
    reorderTimer.start();
}

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void RListWidget::enter ( QListWidgetItem *  item )

privateslot

Definition at line 47 of file rlistwidget.cpp.

References DATA_ROLE, dragged, and rescanItems().

Referenced by RListWidget().

                                            {
    rescanItems();
    // Check for drag+drop setup
    if(item)
        dragged = item->data(DATA_ROLE);
}

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void RListWidget::orderChanged ( )

signal

Definition at line 141 of file moc_rlistwidget.cpp.

Referenced by timerTick().

{
    QMetaObject::activate(this, &staticMetaObject, 0, Q_NULLPTR);
}

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void RListWidget::rescanItems ( )

private

Definition at line 59 of file rlistwidget.cpp.

References DATA_ROLE, and previousItems.

Referenced by enter().

                             {
    QList<QVariant> newItems;
    int c = count();
    for(int i = 0; i < c; i++){
        QVariant data = this->item(i)->data(DATA_ROLE);
        if(data.isNull()){
            // Generate the ID for this item if it doesn't already exist
            data = QUuid::createUuid();
            this->item(i)->setData(DATA_ROLE, data);
        }
        newItems.append(data);
    }
    previousItems = newItems;
}

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void RListWidget::timerTick ( )

privateslot

Definition at line 18 of file rlistwidget.cpp.

References DATA_ROLE, dragged, orderChanged(), and previousItems.

Referenced by RListWidget().

                           {
    bool reordered = false;
    QListWidgetItem* reselect = 0;
    QList<QVariant> newItems;
    // Scan the item list to see if they changed
    int c = count();
    for(int i = 0; i < c; i++){
        QListWidgetItem* itm = item(i);
        QVariant data = itm->data(DATA_ROLE);
        newItems.append(data);
        if(i >= previousItems.count() || data != previousItems[i])
            reordered = true;
        // Re-select the dragged item (if any)
        if(data == dragged)
            reselect = itm;
    }
    if(previousItems.length() != newItems.length())
        return;
    if(reordered){
        previousItems = newItems;
        emit orderChanged();
        if(reselect){
            reselect->setSelected(true);
            setCurrentItem(reselect);
            dragged = QVariant();
        }
    }
}

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Field Documentation

QVariant RListWidget::currentData

private

Definition at line 24 of file rlistwidget.h.

const int RListWidget::DATA_ROLE = Qt::UserRole + 100

staticprivate

Definition at line 29 of file rlistwidget.h.

Referenced by enter(), rescanItems(), and timerTick().

QVariant RListWidget::dragged

private

Definition at line 26 of file rlistwidget.h.

Referenced by enter(), and timerTick().

QList<QVariant> RListWidget::previousItems

private

Definition at line 25 of file rlistwidget.h.

Referenced by rescanItems(), and timerTick().

QTimer RListWidget::reorderTimer

private

Definition at line 27 of file rlistwidget.h.

Referenced by change(), and RListWidget().

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The documentation for this class was generated from the following files:

• src/ckb/rlistwidget.h
• src/ckb/release/moc_rlistwidget.cpp
• src/ckb/rlistwidget.cpp