NOISSUE mark used accounts/sessions in selection menus

11 files changed, 182 insertions, 3 deletions

diff --git a/api/logic/CMakeLists.txt b/api/logic/CMakeLists.txt
index 6d0f78f9..1af3bb71 100644
--- a/api/logic/CMakeLists.txt
+++ b/api/logic/CMakeLists.txt
@@ -32,6 +32,9 @@ set(CORE_SOURCES
 	MMCStrings.h
 	MMCStrings.cpp
 
+	# Use tracking separate from memory management
+	Usable.h
+
 	# Prefix tree where node names are strings between separators
 	SeparatorPrefixTree.h
 
@@ -219,6 +222,8 @@ set(MINECRAFT_SOURCES
 	minecraft/onesix/update/FoldersTask.h
 	minecraft/onesix/update/LibrariesTask.cpp
 	minecraft/onesix/update/LibrariesTask.h
+	minecraft/launch/ClaimAccount.cpp
+	minecraft/launch/ClaimAccount.h
 	minecraft/launch/CreateServerResourcePacksFolder.cpp
 	minecraft/launch/CreateServerResourcePacksFolder.h
 	minecraft/launch/ModMinecraftJar.cpp
diff --git a/api/logic/Usable.h b/api/logic/Usable.h
new file mode 100644
index 00000000..1168be4d
--- /dev/null
+++ b/api/logic/Usable.h
@@ -0,0 +1,58 @@
+#pragma once
+
+#include <cstddef>
+#include <memory>
+
+class Usable;
+
+/**
+ * Base class for things that can be used by multiple other things and we want to track the use count.
+ *
+ * @see UseLock
+ */
+class Usable
+{
+	friend class UseLock;
+public:
+	std::size_t useCount()
+	{
+		return m_useCount;
+	}
+	bool isInUse()
+	{
+		return m_useCount > 0;
+	}
+protected:
+	virtual void decrementUses()
+	{
+		m_useCount--;
+	}
+	virtual void incrementUses()
+	{
+		m_useCount++;
+	}
+private:
+	std::size_t m_useCount = 0;
+};
+
+/**
+ * Lock class to use for keeping track of uses of other things derived from Usable
+ *
+ * @see Usable
+ */
+class UseLock
+{
+public:
+	UseLock(std::shared_ptr<Usable> usable)
+		: m_usable(usable)
+	{
+		// this doesn't use shared pointer use count, because that wouldn't be correct. this count is separate.
+		m_usable->incrementUses();
+	}
+	~UseLock()
+	{
+		m_usable->decrementUses();
+	}
+private:
+	std::shared_ptr<Usable> m_usable;
+};
diff --git a/api/logic/launch/LaunchStep.h b/api/logic/launch/LaunchStep.h
index ea472c0d..4df4673c 100644
--- a/api/logic/launch/LaunchStep.h
+++ b/api/logic/launch/LaunchStep.h
@@ -42,6 +42,8 @@ signals:
 
 public slots:
 	virtual void proceed() {};
+	// called in the opposite order than the Task launch(), used to clean up or otherwise undo things after the launch ends
+	virtual void finalize() {};
 
 protected: /* data */
 	LaunchTask *m_parent;
diff --git a/api/logic/launch/LaunchTask.cpp b/api/logic/launch/LaunchTask.cpp
index a006e519..8b9da398 100644
--- a/api/logic/launch/LaunchTask.cpp
+++ b/api/logic/launch/LaunchTask.cpp
@@ -88,7 +88,7 @@ void LaunchTask::onStepFinished()
 		// end?
 		if(currentStep == m_steps.size() - 1)
 		{
-			emitSucceeded();
+			finalizeSteps(true, QString());
 		}
 		else
 		{
@@ -99,7 +99,23 @@ void LaunchTask::onStepFinished()
 	}
 	else
 	{
-		emitFailed(step->failReason());
+		finalizeSteps(false, step->failReason());
+	}
+}
+
+void LaunchTask::finalizeSteps(bool successful, const QString& error)
+{
+	for(auto step = currentStep; step >= 0; step--)
+	{
+		m_steps[step]->finalize();
+	}
+	if(successful)
+	{
+		emitSucceeded();
+	}
+	else
+	{
+		emitFailed(error);
 	}
 }
 
diff --git a/api/logic/launch/LaunchTask.h b/api/logic/launch/LaunchTask.h
index f2fb3a2c..981e25cf 100644
--- a/api/logic/launch/LaunchTask.h
+++ b/api/logic/launch/LaunchTask.h
@@ -109,6 +109,9 @@ public slots:
 	void onStepFinished();
 	void onProgressReportingRequested();
 
+private: /*methods */
+	void finalizeSteps(bool successful, const QString & error);
+
 protected: /* data */
 	InstancePtr m_instance;
 	shared_qobject_ptr<LogModel> m_logModel;
diff --git a/api/logic/minecraft/MinecraftInstance.cpp b/api/logic/minecraft/MinecraftInstance.cpp
index f0d47733..f36e40ed 100644
--- a/api/logic/minecraft/MinecraftInstance.cpp
+++ b/api/logic/minecraft/MinecraftInstance.cpp
@@ -19,6 +19,7 @@
 #include "launch/steps/TextPrint.h"
 #include "minecraft/launch/LauncherPartLaunch.h"
 #include "minecraft/launch/ModMinecraftJar.h"
+#include "minecraft/launch/ClaimAccount.h"
 #include "java/launch/CheckJava.h"
 
 #include <icons/IIconList.h>
@@ -425,6 +426,7 @@ std::shared_ptr<LaunchTask> MinecraftInstance::createLaunchTask(AuthSessionPtr s
 	// if we aren't in offline mode,.
 	if(session->status != AuthSession::PlayableOffline)
 	{
+		process->appendStep(std::make_shared<ClaimAccount>(pptr, session));
 		process->appendStep(std::make_shared<Update>(pptr));
 	}
 
diff --git a/api/logic/minecraft/auth/AuthSession.h b/api/logic/minecraft/auth/AuthSession.h
index dede90a9..d2f66db8 100644
--- a/api/logic/minecraft/auth/AuthSession.h
+++ b/api/logic/minecraft/auth/AuthSession.h
@@ -6,6 +6,8 @@
 
 #include "multimc_logic_export.h"
 
+class MojangAccount;
+
 struct User
 {
 	QString id;
@@ -46,6 +48,7 @@ struct MULTIMC_LOGIC_EXPORT AuthSession
 	bool auth_server_online = false;
 	// Did the user request online mode?
 	bool wants_online = true;
+	std::shared_ptr<MojangAccount> m_accountPtr;
 };
 
 typedef std::shared_ptr<AuthSession> AuthSessionPtr;
diff --git a/api/logic/minecraft/auth/MojangAccount.cpp b/api/logic/minecraft/auth/MojangAccount.cpp
index 69a24c09..2b073aac 100644
--- a/api/logic/minecraft/auth/MojangAccount.cpp
+++ b/api/logic/minecraft/auth/MojangAccount.cpp
@@ -275,4 +275,26 @@ void MojangAccount::fillSession(AuthSessionPtr session)
 		session->session = "-";
 	}
 	session->u = user();
+	session->m_accountPtr = shared_from_this();
+}
+
+void MojangAccount::decrementUses()
+{
+	Usable::decrementUses();
+	if(!isInUse())
+	{
+		emit changed();
+		qWarning() << "Account" << m_username << "is no longer in use.";
+	}
+}
+
+void MojangAccount::incrementUses()
+{
+	bool wasInUse = isInUse();
+	Usable::incrementUses();
+	if(!wasInUse)
+	{
+		emit changed();
+		qWarning() << "Account" << m_username << "is now in use.";
+	}
 }
diff --git a/api/logic/minecraft/auth/MojangAccount.h b/api/logic/minecraft/auth/MojangAccount.h
index 2de0c19c..4902ec11 100644
--- a/api/logic/minecraft/auth/MojangAccount.h
+++ b/api/logic/minecraft/auth/MojangAccount.h
@@ -24,6 +24,7 @@
 
 #include <memory>
 #include "AuthSession.h"
+#include "Usable.h"
 
 #include "multimc_logic_export.h"
 
@@ -60,7 +61,10 @@ enum AccountStatus
  * Said information may include things such as that account's username, client token, and access
  * token if the user chose to stay logged in.
  */
-class MULTIMC_LOGIC_EXPORT MojangAccount : public QObject
+class MULTIMC_LOGIC_EXPORT MojangAccount :
+	public QObject,
+	public Usable,
+	public std::enable_shared_from_this<MojangAccount>
 {
 	Q_OBJECT
 public: /* construction */
@@ -157,6 +161,11 @@ protected: /* variables */
 	// current task we are executing here
 	std::shared_ptr<YggdrasilTask> m_currentTask;
 
+protected: /* methods */
+
+	void incrementUses() override;
+	void decrementUses() override;
+
 private
 slots:
 	void authSucceeded();
diff --git a/api/logic/minecraft/launch/ClaimAccount.cpp b/api/logic/minecraft/launch/ClaimAccount.cpp
new file mode 100644
index 00000000..71670b4f
--- /dev/null
+++ b/api/logic/minecraft/launch/ClaimAccount.cpp
@@ -0,0 +1,24 @@
+#include "ClaimAccount.h"
+#include <launch/LaunchTask.h>
+
+ClaimAccount::ClaimAccount(LaunchTask* parent, AuthSessionPtr session): LaunchStep(parent)
+{
+	if(session->status == AuthSession::Status::PlayableOnline)
+	{
+		m_account = session->m_accountPtr;
+	}
+}
+
+void ClaimAccount::executeTask()
+{
+	if(m_account)
+	{
+		lock.reset(new UseLock(m_account));
+		emitSucceeded();
+	}
+}
+
+void ClaimAccount::finalize()
+{
+	lock.reset();
+}
diff --git a/api/logic/minecraft/launch/ClaimAccount.h b/api/logic/minecraft/launch/ClaimAccount.h
new file mode 100644
index 00000000..fa5039af
--- /dev/null
+++ b/api/logic/minecraft/launch/ClaimAccount.h
@@ -0,0 +1,35 @@
+/* Copyright 2013-2016 MultiMC Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <launch/LaunchStep.h>
+#include <minecraft/auth/MojangAccount.h>
+
+class ClaimAccount: public LaunchStep
+{
+	Q_OBJECT
+public:
+	explicit ClaimAccount(LaunchTask *parent, AuthSessionPtr session);
+	void executeTask() override;
+	void finalize() override;
+	bool canAbort() const override
+	{
+		return false;
+	}
+private:
+	std::unique_ptr<UseLock> lock;
+	MojangAccountPtr m_account;
+};