GH-907 improve Java testing and PermGen deprecation handling

application/JavaCommon.h

@@ -0,0 +1,46 @@
+#pragma once
+#include <java/JavaChecker.h>
+
+class QWidget;
+
+/**
+ * Common UI bits for the java pages to use.
+ */
+namespace JavaCommon
+{
+	bool checkJVMArgs(QString args, QWidget *parent);
+
+	class TestCheck : public QObject
+	{
+		Q_OBJECT
+	public:
+		TestCheck(QWidget *parent, QString path, QString args, int minMem, int maxMem, int permGen)
+			:m_parent(parent), m_path(path), m_args(args), m_minMem(minMem), m_maxMem(maxMem), m_permGen(permGen)
+		{
+		}
+		virtual ~TestCheck() {};
+
+		void run();
+
+	signals:
+		void finished();
+
+	private:
+		void javaBinaryWasBad(JavaCheckResult result);
+		void javaArgsWereBad(JavaCheckResult result);
+		void javaWasOk(JavaCheckResult result);
+
+	private slots:
+		void checkFinished(JavaCheckResult result);
+		void checkFinishedWithArgs(JavaCheckResult result);
+
+	private:
+		std::shared_ptr<JavaChecker> checker;
+		QWidget *m_parent = nullptr;
+		QString m_path;
+		QString m_args;
+		int m_minMem = 0;
+		int m_maxMem = 0;
+		int m_permGen = 64;
+	};
+}