Adjust plug-in order to match profile loading.

Also marks plug-ins with load order problems in red and changes tool tip to describe error.

components/CMakeLists.txt

@@ -116,6 +116,7 @@ if(QT_QTGUI_LIBRARY AND QT_QTCORE_LIBRARY)
     add_component_qt_dir (contentselector
         model/modelitem model/esmfile
         model/naturalsort model/contentmodel
+		model/loadordererror
         view/combobox view/contentselector
         )
     add_component_qt_dir (config

components/contentselector/model/contentmodel.cpp

@@ -6,6 +6,7 @@
 #include <QDir>
 #include <QTextCodec>
 #include <QDebug>
+#include <qbrush>
 
 #include "components/esm/esmreader.hpp"
 
@@ -170,6 +171,16 @@ QVariant ContentSelectorModel::ContentModel::data(const QModelIndex &index, int
 
     switch (role)
     {
+    case Qt::ForegroundRole:
+    {
+        if (isLoadOrderError(file->filePath()))
+        {
+            QBrush redBackground(Qt::red, Qt::SolidPattern);
+            return redBackground;
+        }
+        break;
+    }
+
     case Qt::EditRole:
     case Qt::DisplayRole:
     {
@@ -202,7 +213,7 @@ QVariant ContentSelectorModel::ContentModel::data(const QModelIndex &index, int
         if (column != 0)
             return QVariant();
 
-        return file->toolTip();
+        return isLoadOrderError(file->filePath()) ? getLoadOrderError(file->filePath()).toolTip() : file->toolTip();
         break;
     }
 
@@ -341,6 +352,8 @@ bool ContentSelectorModel::ContentModel::removeRows(int position, int rows, cons
 
     } endRemoveRows();
 
+    // at this point we know that drag and drop has finished.
+    checkForLoadOrderErrors();
     return true;
 }
 
@@ -530,11 +543,83 @@ bool ContentSelectorModel::ContentModel::isEnabled (QModelIndex index) const
     return (flags(index) & Qt::ItemIsEnabled);
 }
 
-void ContentSelectorModel::ContentModel::setCheckStates (const QStringList &fileList, bool isChecked)
+bool ContentSelectorModel::ContentModel::isLoadOrderError(const QString& filepath) const
 {
-    foreach (const QString &file, fileList)
+    return !(getLoadOrderError(filepath) == LoadOrderError::sNoError);
+}
+
+ContentSelectorModel::LoadOrderError ContentSelectorModel::ContentModel::getLoadOrderError(const QString& filepath) const
+{
+    return mLoadOrderErrors.contains(filepath) ? mLoadOrderErrors[filepath] : ContentSelectorModel::LoadOrderError::sNoError;
+}
+
+void ContentSelectorModel::ContentModel::setLoadOrderError(const QString& filepath, const ContentSelectorModel::LoadOrderError& loadOrderError)
+{
+    mLoadOrderErrors[filepath] = loadOrderError;
+    int filePosition = indexFromItem(item(filepath)).row();
+    emit dataChanged(index(filePosition, 0, QModelIndex()), index(filePosition, 0, QModelIndex()));
+}
+
+void ContentSelectorModel::ContentModel::setContentList(const QStringList &fileList, bool isChecked)
+{
+    mLoadOrderErrors.clear();
+    int previousPosition = -1;
+    foreach (const QString &filepath, fileList)
     {
-        setCheckState (file, isChecked);
+        if (setCheckState(filepath, isChecked))
+        {
+            // as necessary, move plug-ins in visible list to match sequence of supplied filelist
+            const EsmFile* file = item(filepath);
+            int filePosition = indexFromItem(file).row();
+            if (filePosition < previousPosition)
+            {
+                mFiles.move(filePosition, previousPosition);
+                emit dataChanged(index(filePosition, 0, QModelIndex()), index(previousPosition, 0, QModelIndex()));
+            }
+            else
+            {
+                previousPosition = filePosition;
+            }
+        }
+    }
+    checkForLoadOrderErrors();
+}
+
+void ContentSelectorModel::ContentModel::checkForLoadOrderErrors()
+{
+    for (int row = 0; row < mFiles.count(); ++row)
+    {
+        EsmFile* file = item(row);
+        bool isRowInError = isLoadOrderError(file->filePath());
+        LoadOrderError::ErrorCode error = LoadOrderError::ErrorCode_None;
+        foreach(QString dependantfileName, file->gameFiles())
+        {
+            const EsmFile* dependentFile = item(dependantfileName);
+
+            if (!dependentFile)
+            {
+                error = LoadOrderError::ErrorCode_MissingDependency;
+            }
+            else if (!isChecked(dependentFile->filePath()))
+            {
+                error = LoadOrderError::ErrorCode_InactiveDependency;
+            }
+            else if (row < indexFromItem(dependentFile).row())
+            {
+                error = LoadOrderError::ErrorCode_LoadOrder;
+            }
+
+            if (!isRowInError && (error != LoadOrderError::ErrorCode_None))
+            {
+                setLoadOrderError(file->filePath(), LoadOrderError(error, dependantfileName));
+                break;
+            }
+        }
+
+        if (isRowInError && (error == LoadOrderError::ErrorCode_None))
+        {
+            setLoadOrderError(file->filePath(), LoadOrderError::sNoError);
+        }
     }
 }
 

components/contentselector/model/contentmodel.hpp

@@ -4,6 +4,8 @@
 #include <QAbstractTableModel>
 #include <QStringList>
 
+#include "loadordererror.hpp"
+
 namespace ContentSelectorModel
 {
     class EsmFile;
@@ -47,10 +49,14 @@ namespace ContentSelectorModel
         bool isEnabled (QModelIndex index) const;
         bool isChecked(const QString &filepath) const;
         bool setCheckState(const QString &filepath, bool isChecked);
-        void setCheckStates (const QStringList &fileList, bool isChecked);
+        void setContentList(const QStringList &fileList, bool isChecked);
         ContentFileList checkedItems() const;
         void uncheckAll();
 
+        bool isLoadOrderError(const QString& filepath) const;
+        ContentSelectorModel::LoadOrderError ContentSelectorModel::ContentModel::getLoadOrderError(const QString& filepath) const;
+        void ContentSelectorModel::ContentModel::setLoadOrderError(const QString& filepath, const ContentSelectorModel::LoadOrderError& loadOrderError);
+
         void refreshModel();
 
     private:
@@ -60,9 +66,12 @@ namespace ContentSelectorModel
         EsmFile *item(int row);
 
         void sortFiles();
+        void checkForLoadOrderErrors();
+
 
         ContentFileList mFiles;
         QHash<QString, Qt::CheckState> mCheckStates;
+        QHash<QString, LoadOrderError> mLoadOrderErrors;
         QTextCodec *mCodec;
         QString mEncoding;
 

components/contentselector/model/loadordererror.cpp

@@ -0,0 +1,22 @@
+#include "loadordererror.hpp"
+#include <assert.h>
+
+QString ContentSelectorModel::LoadOrderError::sErrorToolTips[ErrorCode_LoadOrder] =
+{
+    QString("Unable to find dependant file: %1"),
+    QString("Dependent file needs to be active: %1"),
+    QString("This file needs to load after %1"),
+};
+
+ContentSelectorModel::LoadOrderError ContentSelectorModel::LoadOrderError::sNoError = ContentSelectorModel::LoadOrderError();
+
+QString ContentSelectorModel::LoadOrderError::toolTip() const
+{
+    assert(mErrorCode);
+    return sErrorToolTips[mErrorCode - 1].arg(mFileName);
+}
+
+bool ContentSelectorModel::LoadOrderError::operator== (const ContentSelectorModel::LoadOrderError& rhs) const
+{
+    return (mErrorCode == rhs.mErrorCode) && ((mErrorCode == ErrorCode_None) || (mFileName == rhs.mFileName));
+}

components/contentselector/model/loadordererror.hpp

@@ -0,0 +1,41 @@
+#ifndef LOADORDERERROR_HPP
+#define LOADORDERERROR_HPP
+
+#include <QString>
+
+namespace ContentSelectorModel
+{
+    /// \Details of a suspected Load Order problem a plug-in will have. This is basically a POD
+    class LoadOrderError
+    {
+    public:
+        enum ErrorCode
+        {
+            ErrorCode_None               = 0,
+            ErrorCode_MissingDependency  = 1,
+            ErrorCode_InactiveDependency = 2,
+            ErrorCode_LoadOrder          = 3,
+        };
+
+        inline LoadOrderError() : mErrorCode(ErrorCode_None) {};
+        inline LoadOrderError(ErrorCode errorCode, QString fileName)
+        {
+            mErrorCode = errorCode;
+            mFileName = fileName;
+        }
+        inline ErrorCode errorCode() const { return mErrorCode; }
+        inline QString fileName() const { return mFileName; }
+        bool operator==(const LoadOrderError& rhs) const;
+        QString toolTip() const;
+
+        /// \Sentinal to represent a "No Load Order Error" condition
+        static LoadOrderError sNoError;
+
+    private:
+        ErrorCode mErrorCode;
+        QString mFileName;
+        static QString sErrorToolTips[ErrorCode_LoadOrder];
+    };
+}
+
+#endif // LOADORDERERROR_HPP

components/contentselector/view/contentselector.cpp

@@ -75,7 +75,7 @@ void ContentSelectorView::ContentSelector::setProfileContent(const QStringList &
         }
     }
 
-    setCheckStates (fileList);
+    setContentList(fileList);
 }
 
 void ContentSelectorView::ContentSelector::setGameFile(const QString &filename)
@@ -103,14 +103,14 @@ void ContentSelectorView::ContentSelector::clearCheckStates()
     mContentModel->uncheckAll();
 }
 
-void ContentSelectorView::ContentSelector::setCheckStates(const QStringList &list)
+void ContentSelectorView::ContentSelector::setContentList(const QStringList &list)
 {
     if (list.isEmpty())
     {
         slotCurrentGameFileIndexChanged (ui.gameFileView->currentIndex());
     }
     else
-        mContentModel->setCheckStates (list, true);
+        mContentModel->setContentList(list, true);
 }
 
 ContentSelectorModel::ContentFileList

components/contentselector/view/contentselector.hpp

@@ -32,7 +32,7 @@ namespace ContentSelectorView
         void setProfileContent (const QStringList &fileList);
 
         void clearCheckStates();
-        void setCheckStates (const QStringList &list);
+        void setContentList(const QStringList &list);
 
         ContentSelectorModel::ContentFileList selectedFiles() const;