16 files changed, 385 insertions, 49 deletions

diff --git a/gui/pages/InstanceSettingsPage.cpp b/gui/pages/InstanceSettingsPage.cpp
index b4a6405f..6e2ce238 100644
--- a/gui/pages/InstanceSettingsPage.cpp
+++ b/gui/pages/InstanceSettingsPage.cpp
@@ -23,13 +23,19 @@ QString InstanceSettingsPage::id()
 	return "settings";
 }
 
-InstanceSettingsPage::InstanceSettingsPage(SettingsObject *s, QWidget *parent)
-	: QWidget(parent), ui(new Ui::InstanceSettingsPage), m_settings(s)
+InstanceSettingsPage::InstanceSettingsPage(BaseInstance *inst, QWidget *parent)
+	: QWidget(parent), ui(new Ui::InstanceSettingsPage), m_instance(inst)
 {
+	m_settings = &(inst->settings());
 	ui->setupUi(this);
 	loadSettings();
 }
 
+bool InstanceSettingsPage::shouldDisplay()
+{
+	return !m_instance->isRunning();
+}
+
 InstanceSettingsPage::~InstanceSettingsPage()
 {
 	delete ui;
diff --git a/gui/pages/InstanceSettingsPage.h b/gui/pages/InstanceSettingsPage.h
index db37d8d8..2447168f 100644
--- a/gui/pages/InstanceSettingsPage.h
+++ b/gui/pages/InstanceSettingsPage.h
@@ -32,15 +32,14 @@ class InstanceSettingsPage : public QWidget, public BasePage
 	Q_OBJECT
 
 public:
-	explicit InstanceSettingsPage(SettingsObject *s, QWidget *parent = 0);
+	explicit InstanceSettingsPage(BaseInstance *inst, QWidget *parent = 0);
 	virtual ~InstanceSettingsPage();
 	virtual QString displayName() override;
 	virtual QIcon icon() override;
 	virtual QString id() override;
 	virtual bool apply();
-	virtual QString helpPage() override { return "Instance-settings"; };
-private:
-	void updateCheckboxStuff();
+	virtual QString helpPage() override { return "Instance-settings"; }
+	virtual bool shouldDisplay();
 private slots:
 	void on_javaDetectBtn_clicked();
 
@@ -54,6 +53,7 @@ private slots:
 	void loadSettings();
 private:
 	Ui::InstanceSettingsPage *ui;
+	BaseInstance *m_instance;
 	SettingsObject *m_settings;
 	std::shared_ptr<JavaChecker> checker;
 };
diff --git a/gui/pages/LegacyJarModPage.cpp b/gui/pages/LegacyJarModPage.cpp
index f0f3d753..b1c0d49a 100644
--- a/gui/pages/LegacyJarModPage.cpp
+++ b/gui/pages/LegacyJarModPage.cpp
@@ -54,6 +54,11 @@ QString LegacyJarModPage::displayName()
 	return tr("Jar Mods");
 }
 
+bool LegacyJarModPage::shouldDisplay()
+{
+	return !m_inst->isRunning();
+}
+
 QIcon LegacyJarModPage::icon()
 {
 	return QIcon::fromTheme("plugin-red");
diff --git a/gui/pages/LegacyJarModPage.h b/gui/pages/LegacyJarModPage.h
index 0b28777b..016f4a8f 100644
--- a/gui/pages/LegacyJarModPage.h
+++ b/gui/pages/LegacyJarModPage.h
@@ -38,6 +38,7 @@ public:
 	virtual QIcon icon();
 	virtual QString id();
 	virtual QString helpPage() override { return "Legacy-jar-mods"; };
+	virtual bool shouldDisplay();
 
 private
 slots:
diff --git a/gui/pages/LegacyUpgradePage.cpp b/gui/pages/LegacyUpgradePage.cpp
index 02729c79..bb54210c 100644
--- a/gui/pages/LegacyUpgradePage.cpp
+++ b/gui/pages/LegacyUpgradePage.cpp
@@ -1,4 +1,5 @@
 #include "LegacyUpgradePage.h"
+#include <logic/LegacyInstance.h>
 #include "ui_LegacyUpgradePage.h"
 
 QString LegacyUpgradePage::displayName()
@@ -31,3 +32,8 @@ void LegacyUpgradePage::on_upgradeButton_clicked()
 {
 	// now what?
 }
+
+bool LegacyUpgradePage::shouldDisplay()
+{
+	return !m_inst->isRunning();
+}
\ No newline at end of file
diff --git a/gui/pages/LegacyUpgradePage.h b/gui/pages/LegacyUpgradePage.h
index 4f287e95..eb816a7a 100644
--- a/gui/pages/LegacyUpgradePage.h
+++ b/gui/pages/LegacyUpgradePage.h
@@ -37,6 +37,7 @@ public:
 	virtual QIcon icon() override;
 	virtual QString id() override;
 	virtual QString helpPage() override { return "Legacy-upgrade"; };
+	virtual bool shouldDisplay();
 private
 slots:
 	void on_upgradeButton_clicked();
diff --git a/gui/pages/LogPage.cpp b/gui/pages/LogPage.cpp
new file mode 100644
index 00000000..dd088862
--- /dev/null
+++ b/gui/pages/LogPage.cpp
@@ -0,0 +1,137 @@
+#include "LogPage.h"
+#include <gui/dialogs/CustomMessageBox.h>
+#include <gui/dialogs/ProgressDialog.h>
+#include <logic/MinecraftProcess.h>
+#include <QtGui/QIcon>
+#include "ui_LogPage.h"
+#include "logic/net/PasteUpload.h"
+#include <QScrollBar>
+
+QString LogPage::displayName()
+{
+	return tr("Minecraft Log");
+}
+
+QIcon LogPage::icon()
+{
+	return QIcon::fromTheme("refresh");
+}
+
+QString LogPage::id()
+{
+	return "console";
+}
+
+LogPage::LogPage(MinecraftProcess *proc, QWidget *parent)
+	: QWidget(parent), ui(new Ui::LogPage), m_process(proc)
+{
+	ui->setupUi(this);
+	connect(m_process, SIGNAL(log(QString, MessageLevel::Enum)), this,
+		SLOT(write(QString, MessageLevel::Enum)));
+}
+
+LogPage::~LogPage()
+{
+	delete ui;
+}
+
+bool LogPage::apply()
+{
+	return true;
+}
+
+bool LogPage::shouldDisplay()
+{
+	return m_process->instance()->isRunning();
+}
+
+void LogPage::on_btnPaste_clicked()
+{
+	auto text = ui->text->toPlainText();
+	ProgressDialog dialog(this);
+	PasteUpload *paste = new PasteUpload(this, text);
+	dialog.exec(paste);
+	if (!paste->successful())
+	{
+		CustomMessageBox::selectable(this, "Upload failed", paste->failReason(),
+									 QMessageBox::Critical)->exec();
+	}
+}
+
+void LogPage::writeColor(QString text, const char *color, const char * background)
+{
+	// append a paragraph
+	QString newtext;
+	newtext += "<span style=\"";
+	{
+		if (color)
+			newtext += QString("color:") + color + ";";
+		if (background)
+			newtext += QString("background-color:") + background + ";";
+		newtext += "font-family: monospace;";
+	}
+	newtext += "\">";
+	newtext += text.toHtmlEscaped();
+	newtext += "</span>";
+	ui->text->appendHtml(newtext);
+}
+
+void LogPage::write(QString data, MessageLevel::Enum mode)
+{
+	QScrollBar *bar = ui->text->verticalScrollBar();
+	int max_bar = bar->maximum();
+	int val_bar = bar->value();
+	if(isVisible())
+	{
+		if (m_scroll_active)
+		{
+			m_scroll_active = (max_bar - val_bar) <= 1;
+		}
+		else
+		{
+			m_scroll_active = val_bar == max_bar;
+		}
+	}
+	if (data.endsWith('\n'))
+		data = data.left(data.length() - 1);
+	QStringList paragraphs = data.split('\n');
+	QStringList filtered;
+	for (QString &paragraph : paragraphs)
+	{
+		// Quick hack for
+		if(paragraph.contains("Detected an attempt by a mod null to perform game activity during mod construction"))
+			continue;
+		filtered.append(paragraph.trimmed());
+	}
+	QListIterator<QString> iter(filtered);
+	if (mode == MessageLevel::MultiMC)
+		while (iter.hasNext())
+			writeColor(iter.next(), "blue", 0);
+	else if (mode == MessageLevel::Error)
+		while (iter.hasNext())
+			writeColor(iter.next(), "red", 0);
+	else if (mode == MessageLevel::Warning)
+		while (iter.hasNext())
+			writeColor(iter.next(), "orange", 0);
+	else if (mode == MessageLevel::Fatal)
+		while (iter.hasNext())
+			writeColor(iter.next(), "red", "black");
+	else if (mode == MessageLevel::Debug)
+		while (iter.hasNext())
+			writeColor(iter.next(), "green", 0);
+	else if (mode == MessageLevel::PrePost)
+		while (iter.hasNext())
+			writeColor(iter.next(), "grey", 0);
+	// TODO: implement other MessageLevels
+	else
+		while (iter.hasNext())
+			writeColor(iter.next(), 0, 0);
+	if(isVisible())
+	{
+		if (m_scroll_active)
+		{
+			bar->setValue(bar->maximum());
+		}
+		m_last_scroll_value = bar->value();
+	}
+}
diff --git a/gui/pages/LogPage.h b/gui/pages/LogPage.h
new file mode 100644
index 00000000..7cdea2c1
--- /dev/null
+++ b/gui/pages/LogPage.h
@@ -0,0 +1,72 @@
+/* Copyright 2014 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 <QWidget>
+
+#include <logic/BaseInstance.h>
+#include <logic/net/NetJob.h>
+#include <logic/MinecraftProcess.h>
+#include "BasePage.h"
+
+class EnabledItemFilter;
+class MinecraftProcess;
+namespace Ui
+{
+class LogPage;
+}
+
+class LogPage : public QWidget, public BasePage
+{
+	Q_OBJECT
+
+public:
+	explicit LogPage(MinecraftProcess *proc, QWidget *parent = 0);
+	virtual ~LogPage();
+	virtual QString displayName() override;
+	virtual QIcon icon() override;
+	virtual QString id() override;
+	virtual bool apply();
+	virtual QString helpPage() override { return "Minecraft-Log"; };
+	virtual bool shouldDisplay();
+
+private:
+	/**
+	 * @brief write a colored paragraph
+	 * @param data the string
+	 * @param color the css color name
+	 * this will only insert a single paragraph.
+	 * \n are ignored. a real \n is always appended.
+	 */
+	void writeColor(QString text, const char *color, const char *background);
+
+private slots:
+	/**
+	 * @brief write a string
+	 * @param data the string
+	 * @param mode the WriteMode
+	 * lines have to be put through this as a whole!
+	 */
+	void write(QString data, MessageLevel::Enum level = MessageLevel::MultiMC);
+	void on_btnPaste_clicked();
+	
+private:
+	Ui::LogPage *ui;
+	MinecraftProcess *m_process;
+	int m_last_scroll_value = 0;
+	bool m_scroll_active = true;
+	int m_saved_offset = 0;
+};
diff --git a/gui/pages/LogPage.ui b/gui/pages/LogPage.ui
new file mode 100644
index 00000000..00b611b5
--- /dev/null
+++ b/gui/pages/LogPage.ui
@@ -0,0 +1,76 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>LogPage</class>
+ <widget class="QWidget" name="LogPage">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>831</width>
+    <height>596</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Log</string>
+  </property>
+  <layout class="QHBoxLayout" name="horizontalLayout_2">
+   <property name="leftMargin">
+    <number>0</number>
+   </property>
+   <property name="topMargin">
+    <number>0</number>
+   </property>
+   <property name="rightMargin">
+    <number>0</number>
+   </property>
+   <property name="bottomMargin">
+    <number>0</number>
+   </property>
+   <item>
+    <widget class="QPlainTextEdit" name="text">
+     <property name="undoRedoEnabled">
+      <bool>false</bool>
+     </property>
+     <property name="readOnly">
+      <bool>true</bool>
+     </property>
+     <property name="plainText">
+      <string notr="true"/>
+     </property>
+     <property name="textInteractionFlags">
+      <set>Qt::LinksAccessibleByKeyboard|Qt::LinksAccessibleByMouse|Qt::TextBrowserInteraction|Qt::TextSelectableByKeyboard|Qt::TextSelectableByMouse</set>
+     </property>
+     <property name="centerOnScroll">
+      <bool>false</bool>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <layout class="QVBoxLayout" name="verticalLayout">
+     <item>
+      <widget class="QPushButton" name="btnPaste">
+       <property name="text">
+        <string>Upload Log</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <spacer name="verticalSpacer">
+       <property name="orientation">
+        <enum>Qt::Vertical</enum>
+       </property>
+       <property name="sizeHint" stdset="0">
+        <size>
+         <width>20</width>
+         <height>40</height>
+        </size>
+       </property>
+      </spacer>
+     </item>
+    </layout>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>
diff --git a/gui/pages/ModFolderPage.cpp b/gui/pages/ModFolderPage.cpp
index 6d5c6226..2035e57a 100644
--- a/gui/pages/ModFolderPage.cpp
+++ b/gui/pages/ModFolderPage.cpp
@@ -48,11 +48,12 @@ QString ModFolderPage::id()
 	return m_id;
 }
 
-ModFolderPage::ModFolderPage(std::shared_ptr<ModList> mods, QString id, QString iconName,
+ModFolderPage::ModFolderPage(BaseInstance * inst, std::shared_ptr<ModList> mods, QString id, QString iconName,
 							 QString displayName, QString helpPage, QWidget *parent)
 	: QWidget(parent), ui(new Ui::ModFolderPage)
 {
 	ui->setupUi(this);
+	m_inst = inst;
 	m_mods = mods;
 	m_id = id;
 	m_displayName = displayName;
@@ -72,6 +73,13 @@ ModFolderPage::~ModFolderPage()
 	delete ui;
 }
 
+bool ModFolderPage::shouldDisplay()
+{
+	if(m_inst)
+		return !m_inst->isRunning();
+	return true;
+}
+
 bool ModFolderPage::modListFilter(QKeyEvent *keyEvent)
 {
 	switch (keyEvent->key())
diff --git a/gui/pages/ModFolderPage.h b/gui/pages/ModFolderPage.h
index b4e05928..c193f4c1 100644
--- a/gui/pages/ModFolderPage.h
+++ b/gui/pages/ModFolderPage.h
@@ -32,17 +32,19 @@ class ModFolderPage : public QWidget, public BasePage
 	Q_OBJECT
 
 public:
-	explicit ModFolderPage(std::shared_ptr<ModList> mods, QString id, QString iconName,
+	explicit ModFolderPage(BaseInstance * inst, std::shared_ptr<ModList> mods, QString id, QString iconName,
 						   QString displayName, QString helpPage = "" , QWidget *parent = 0);
 	virtual ~ModFolderPage();
 	virtual QString displayName() override;
 	virtual QIcon icon() override;
 	virtual QString id() override;
 	virtual QString helpPage() override { return m_helpName; };
+	virtual bool shouldDisplay();
 protected:
 	bool eventFilter(QObject *obj, QEvent *ev);
 	bool modListFilter(QKeyEvent *ev);
-
+protected:
+	BaseInstance * m_inst;
 private:
 	Ui::ModFolderPage *ui;
 	std::shared_ptr<ModList> m_mods;
diff --git a/gui/pages/ResourcePackPage.h b/gui/pages/ResourcePackPage.h
index 9332a6fa..06367905 100644
--- a/gui/pages/ResourcePackPage.h
+++ b/gui/pages/ResourcePackPage.h
@@ -5,10 +5,9 @@ class ResourcePackPage : public ModFolderPage
 {
 public:
 	explicit ResourcePackPage(BaseInstance *instance, QWidget *parent = 0)
-		: ModFolderPage(instance->resourcePackList(), "resourcepacks", "resourcepacks",
+		: ModFolderPage(instance, instance->resourcePackList(), "resourcepacks", "resourcepacks",
 						tr("Resource packs"), "Resource-packs", parent)
 	{
-		m_inst = instance;
 	}
 
 	virtual ~ResourcePackPage() {};
@@ -17,6 +16,4 @@ public:
 		return !m_inst->traits().contains("no-texturepacks") &&
 			   !m_inst->traits().contains("texturepacks");
 	}
-private:
-	BaseInstance *m_inst;
 };
diff --git a/gui/pages/ScreenshotsPage.cpp b/gui/pages/ScreenshotsPage.cpp
index 3dc144ca..051bc12d 100644
--- a/gui/pages/ScreenshotsPage.cpp
+++ b/gui/pages/ScreenshotsPage.cpp
@@ -18,43 +18,63 @@
 #include "logic/screenshots/ImgurAlbumCreation.h"
 #include "logic/tasks/SequentialTask.h"
 
-class ThumbnailProvider : public QFileIconProvider
-{
-public:
-	virtual ~ThumbnailProvider() {};
-	virtual QIcon icon(const QFileInfo &info) const
-	{
-		QImage image(info.absoluteFilePath());
-		if (image.isNull())
-		{
-			return QFileIconProvider::icon(info);
-		}
-		QImage thumbnail = image.scaledToWidth(256, Qt::SmoothTransformation);
-		return QIcon(QPixmap::fromImage(thumbnail));
-	}
-};
-
 class FilterModel : public QIdentityProxyModel
 {
+public:
 	virtual QVariant data(const QModelIndex &proxyIndex, int role = Qt::DisplayRole) const
 	{
 		auto model = sourceModel();
-		if(!model)
+		if (!model)
 			return QVariant();
-		QVariant result = sourceModel()->data(mapToSource(proxyIndex), role);
-		if(role == Qt::DisplayRole || role == Qt::EditRole)
+		if (role == Qt::DisplayRole || role == Qt::EditRole)
+		{
+			QVariant result = sourceModel()->data(mapToSource(proxyIndex), role);
+			return result.toString().remove(QRegExp("\\.png$"));
+		}
+		if (role == Qt::DecorationRole)
 		{
-			return result.toString().remove(QRegExp("\.png$"));
+			QVariant result = sourceModel()->data(mapToSource(proxyIndex), QFileSystemModel::FilePathRole);
+			QString filePath = result.toString();
+			if(thumbnailCache.contains(filePath))
+			{
+				return thumbnailCache[filePath];
+			}
+			bool failed = false;
+			QFileInfo info(filePath);
+			failed |= info.isDir();
+			failed |= (info.suffix().compare("png", Qt::CaseInsensitive) != 0);
+			// WARNING: really an IF! this is purely for using break instead of goto...
+			while(!failed)
+			{
+				QImage image(info.absoluteFilePath());
+				if (image.isNull())
+				{
+					// TODO: schedule a retry.
+					failed = true;
+					break;
+				}
+				QImage thumbnail = image.scaledToWidth(512).scaledToWidth(256, Qt::SmoothTransformation);
+				QIcon icon(QPixmap::fromImage(thumbnail));
+				// the casts are a hack for the stupid method being const.
+				((QMap<QString, QIcon> &)thumbnailCache).insert(filePath, icon);
+				return icon;
+			}
+			// we failed anyway...
+			return sourceModel()->data(mapToSource(proxyIndex), QFileSystemModel::FileIconRole);
+		}
+		else
+		{
+			QVariant result = sourceModel()->data(mapToSource(proxyIndex), role);
+			return result;
 		}
-		return result;
 	}
 	virtual bool setData(const QModelIndex &index, const QVariant &value,
-						int role = Qt::EditRole)
+						 int role = Qt::EditRole)
 	{
 		auto model = sourceModel();
-		if(!model)
+		if (!model)
 			return false;
-		if(role != Qt::EditRole)
+		if (role != Qt::EditRole)
 			return false;
 		// FIXME: this is a workaround for a bug in QFileSystemModel, where it doesn't
 		// sort after renames
@@ -64,22 +84,25 @@ class FilterModel : public QIdentityProxyModel
 		}
 		return model->setData(mapToSource(index), value.toString() + ".png", role);
 	}
+private:
+	QMap<QString, QIcon> thumbnailCache;
 };
 
 class CenteredEditingDelegate : public QStyledItemDelegate
 {
 public:
-	explicit CenteredEditingDelegate(QObject *parent = 0)
-	: QStyledItemDelegate(parent)
+	explicit CenteredEditingDelegate(QObject *parent = 0) : QStyledItemDelegate(parent)
+	{
+	}
+	virtual ~CenteredEditingDelegate()
 	{
 	}
-	virtual ~CenteredEditingDelegate() {}
 	virtual QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option,
 								  const QModelIndex &index) const
 	{
 		auto widget = QStyledItemDelegate::createEditor(parent, option, index);
-		auto foo = dynamic_cast<QLineEdit *> (widget);
-		if(foo)
+		auto foo = dynamic_cast<QLineEdit *>(widget);
+		if (foo)
 		{
 			foo->setAlignment(Qt::AlignHCenter);
 			foo->setFrame(true);
@@ -111,7 +134,6 @@ ScreenshotsPage::ScreenshotsPage(BaseInstance *instance, QWidget *parent)
 	m_filterModel.reset(new FilterModel());
 	m_filterModel->setSourceModel(m_model.get());
 	m_model->setFilter(QDir::Files | QDir::Writable | QDir::Readable);
-	m_model->setIconProvider(new ThumbnailProvider);
 	m_model->setReadOnly(false);
 	m_folder = PathCombine(instance->minecraftRoot(), "screenshots");
 	m_valid = ensureFolderPathExists(m_folder);
@@ -218,11 +240,11 @@ void ScreenshotsPage::on_deleteBtn_clicked()
 		QMessageBox::Warning, QMessageBox::Yes | QMessageBox::No);
 	std::unique_ptr<QMessageBox> box(mbox);
 
-	if(box->exec() != QMessageBox::Yes)
+	if (box->exec() != QMessageBox::Yes)
 		return;
 
 	auto selected = ui->listView->selectionModel()->selectedIndexes();
-	for(auto item : selected)
+	for (auto item : selected)
 	{
 		m_model->remove(item);
 	}
diff --git a/gui/pages/TexturePackPage.h b/gui/pages/TexturePackPage.h
index b1a2f544..69a47204 100644
--- a/gui/pages/TexturePackPage.h
+++ b/gui/pages/TexturePackPage.h
@@ -5,16 +5,13 @@ class TexturePackPage : public ModFolderPage
 {
 public:
 	explicit TexturePackPage(BaseInstance *instance, QWidget *parent = 0)
-		: ModFolderPage(instance->texturePackList(), "texturepacks", "resourcepacks",
+		: ModFolderPage(instance, instance->texturePackList(), "texturepacks", "resourcepacks",
 						tr("Texture packs"), "Texture-packs", parent)
 	{
-		m_inst = instance;
 	}
 	virtual ~TexturePackPage() {};
 	virtual bool shouldDisplay() override
 	{
 		return m_inst->traits().contains("texturepacks");
 	}
-private:
-	BaseInstance *m_inst;
 };
diff --git a/gui/pages/VersionPage.cpp b/gui/pages/VersionPage.cpp
index 3fd98d27..34599111 100644
--- a/gui/pages/VersionPage.cpp
+++ b/gui/pages/VersionPage.cpp
@@ -66,6 +66,11 @@ QString VersionPage::id()
 	return "version";
 }
 
+bool VersionPage::shouldDisplay()
+{
+	return !m_inst->isRunning();
+}
+
 VersionPage::VersionPage(OneSixInstance *inst, QWidget *parent)
 	: QWidget(parent), ui(new Ui::VersionPage), m_inst(inst)
 {
diff --git a/gui/pages/VersionPage.h b/gui/pages/VersionPage.h
index a8bc1515..dfbb6741 100644
--- a/gui/pages/VersionPage.h
+++ b/gui/pages/VersionPage.h
@@ -37,6 +37,7 @@ public:
 	virtual QIcon icon() override;
 	virtual QString id() override;
 	virtual QString helpPage() override { return "Instance-version"; };
+	virtual bool shouldDisplay();
 private
 slots: