Added class ObjectBinder for common data binding.

core/objectbinder.cpp

@@ -0,0 +1,93 @@
+#include "objectbinder.h"
+#include <QDecDouble.hh>
+
+ObjectBinder::ObjectBinder(QObject *parent)
+    :QObject(parent)
+{
+    m_data = NULL;
+}
+
+void ObjectBinder::registerBinding(QWidget *widget) {
+    if (!m_bindWidgets.contains(widget)) {
+        m_bindWidgets.append(widget);
+    }
+}
+
+void ObjectBinder::registerBinding(QComboBox *combo, const QList<ComboData> &values) {
+    m_bindCombos[combo] = values;
+}
+
+void ObjectBinder::registerValidator(IValidator *validator) {
+    m_validators.append(validator);
+}
+
+void ObjectBinder::setData(QObject *data)
+{
+    m_data = data;
+}
+
+void ObjectBinder::bindToUi() {
+    foreach (QWidget *widget, m_bindWidgets) {
+        const char* prop = widget->metaObject()->userProperty().name();
+        QVariant value = m_data->property(widget->objectName().toStdString().c_str());
+        if (value.canConvert<QDecDouble>())
+        {
+            widget->setProperty(prop, value.value<QDecDouble>().toString());
+        }
+        else
+        {
+            widget->setProperty(prop, value);
+        }
+    }
+
+    foreach (QComboBox *combo, m_bindCombos.keys()) {
+        int idx = 0;
+        QVariant field = m_data->property(combo->objectName().toStdString().c_str());
+
+        combo->clear();
+        for (int i = 0; i < m_bindCombos[combo].size(); i++) {
+            ComboData data = m_bindCombos[combo][i];
+            combo->addItem(data.label(), data.index());
+
+            if (data.index().canConvert<QObject*>()) {
+                ComboItem* ci = qobject_cast<ComboItem*>(data.index().value<QObject*>());
+                ComboItem* ciField = qobject_cast<ComboItem*>(field.value<QObject*>());
+                if (ci->eq(ciField)) {
+                    idx = i;
+                }
+            }
+            else if (field == data.index()) {
+                idx = i;
+            }
+        }
+
+        combo->setCurrentIndex(idx);
+    }
+}
+
+bool ObjectBinder::bindToData() {
+    foreach (IValidator *val, m_validators) {
+        if (!val->validate()) {
+            emit validationError(val->errMessage());
+            return false;
+        }
+    }
+
+    foreach (QWidget *widget, m_bindWidgets) {
+        const char* prop = widget->metaObject()->userProperty().name();
+
+        QVariant val = widget->property(prop);
+        if (m_data->property(widget->objectName().toStdString().c_str()).canConvert<QDecDouble>())
+        {
+            QDecDouble dec(val.toDouble());
+            val = QVariant::fromValue(dec);
+        }
+        m_data->setProperty(widget->objectName().toStdString().c_str(), val);
+    }
+
+    foreach (QComboBox *combo, m_bindCombos.keys()) {
+        m_data->setProperty(combo->objectName().toStdString().c_str(), combo->currentData());
+    }
+
+    return true;
+}