GH-1031 include icon in exported instance if it is custom

logic/icons/IconList.cpp

@@ -261,6 +261,24 @@ void IconList::installIcons(QStringList iconFiles)
 	}
 }
 
+bool IconList::iconFileExists(QString key)
+{
+	auto iconEntry = icon(key);
+	if(!iconEntry)
+	{
+		return false;
+	}
+	return iconEntry->has(MMCIcon::FileBased);
+}
+
+const MMCIcon *IconList::icon(QString key)
+{
+	int iconIdx = getIconIndex(key);
+	if (iconIdx == -1)
+		return nullptr;
+	return &icons[iconIdx];
+}
+
 bool IconList::deleteIcon(QString key)
 {
 	int iconIdx = getIconIndex(key);

logic/icons/IconList.h

@@ -43,6 +43,7 @@ public:
 
 	bool addIcon(QString key, QString name, QString path, MMCIcon::Type type);
 	bool deleteIcon(QString key);
+	bool iconFileExists(QString key);
 
 	virtual QStringList mimeTypes() const;
 	virtual Qt::DropActions supportedDropActions() const;
@@ -52,6 +53,8 @@ public:
 
 	void installIcons(QStringList iconFiles);
 
+	const MMCIcon * icon(QString key);
+
 	void startWatching();
 	void stopWatching();