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#ifndef LSSETEDITOR_H
#define LSSETEDITOR_H
#include <QWidget>
#include <QSpinBox>
#include <QComboBox>
class _LSSetEntryEditorBaseBase : public QWidget {
Q_OBJECT
protected:
explicit _LSSetEntryEditorBaseBase(QWidget *parent = 0) :
QWidget(parent) { }
signals:
void dataEdited();
};
// class prototype
template <typename TData, typename TWidget>
class LSSetEditor;
template <typename TData>
class LSSetEntryEditorBase : public _LSSetEntryEditorBaseBase {
protected:
explicit LSSetEntryEditorBase(QWidget *parent = 0) :
_LSSetEntryEditorBaseBase(parent) { }
public:
void setCurrentEntry(TData &entry) {
m_currentEntry = &entry;
loadEntryFrom(entry);
}
private:
TData *m_currentEntry;
protected:
virtual void loadEntryFrom(const TData &entry) = 0;
TData *currentEntry() const { return m_currentEntry; }
};
class _LSSetEditorBase : public QWidget {
Q_OBJECT
public:
explicit _LSSetEditorBase(int maxEntries, QWidget *parent = 0);
protected:
int m_maxEntries;
QSpinBox *m_entryCount;
QComboBox *m_chooser;
QWidget *m_setEditorWidget;
int m_loadingThings;
void setup(QWidget *eWidget);
virtual void changeEntryCountTo(int count) = 0;
virtual void showEntry(int index) = 0;
virtual void resizeDataListTo(int count) = 0;
private slots:
void handleEntryCountChanged(int count);
void handleEntrySelected(int index);
signals:
void dataEdited();
};
template <typename TData, typename TWidget>
class LSSetEditor : public _LSSetEditorBase {
public:
explicit LSSetEditor(int maxEntries, QWidget *parent = 0) :
_LSSetEditorBase(maxEntries, parent) {
TWidget *w = new TWidget(this);
setup(w);
m_setEditorWidget = w;
m_typedSetEditorWidget = w;
LSSetEntryEditorBase<TData> *checkMe = w;
connect(checkMe, SIGNAL(dataEdited()), SIGNAL(dataEdited()));
}
void setData(QList<TData> *newData) {
m_loadingThings++;
m_data = newData;
m_entryCount->setValue(newData->count());
changeEntryCountTo(newData->count());
m_chooser->setCurrentIndex(newData->count() ? 0 : -1);
showEntry(newData->count() ? 0 : -1);
m_loadingThings--;
}
protected:
QList<TData> *m_data;
TWidget *m_typedSetEditorWidget;
void changeEntryCountTo(int count) {
m_loadingThings++;
int existingCount = m_chooser->count();
if (existingCount > count) {
// remove something
int nowSelected = m_chooser->currentIndex();
if (nowSelected >= count) {
// oops, we'll need to select something else
showEntry(count - 1);
m_chooser->setCurrentIndex(count - 1);
}
for (int i = (existingCount - 1); i >= count; i--)
m_chooser->removeItem(i);
} else if (count > existingCount) {
// add something
for (int i = existingCount; i < count; i++)
m_chooser->addItem(QString("Set %1").arg(i + 1));
}
m_loadingThings--;
}
void resizeDataListTo(int count) {
m_data->reserve(count);
while (m_data->count() < count)
m_data->append(TData());
while (m_data->count() > count)
m_data->removeLast();
}
void showEntry(int index) {
m_loadingThings++;
if (index == -1) {
m_setEditorWidget->setEnabled(false);
} else {
m_setEditorWidget->setEnabled(true);
TData &entry = (*m_data)[index];
m_typedSetEditorWidget->setCurrentEntry(entry);
}
}
};
#endif // LSSETEDITOR_H
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