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authorPetr Mrázek <peterix@gmail.com>2016-08-18 21:31:37 +0200
committerPetr Mrázek <peterix@gmail.com>2016-08-19 08:05:43 +0200
commit67eca08b2260f19ff296c0b6cb73eb3b0479e4b2 (patch)
tree96027e6397b24ee87d8d116448387c959a7e197b /api/logic/launch/LogModel.cpp
parent9aff21c1810f366f599fc5d35dfd3d7bc216f759 (diff)
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NOISSUE use model/view for Minecraft log data
Diffstat (limited to 'api/logic/launch/LogModel.cpp')
-rw-r--r--api/logic/launch/LogModel.cpp135
1 files changed, 135 insertions, 0 deletions
diff --git a/api/logic/launch/LogModel.cpp b/api/logic/launch/LogModel.cpp
new file mode 100644
index 00000000..c12a0488
--- /dev/null
+++ b/api/logic/launch/LogModel.cpp
@@ -0,0 +1,135 @@
+#include "LogModel.h"
+
+LogModel::LogModel(QObject *parent):QAbstractListModel(parent)
+{
+ m_content.resize(m_maxLines);
+}
+
+int LogModel::rowCount(const QModelIndex &parent) const
+{
+ if (parent.isValid())
+ return 0;
+
+ return m_numLines;
+}
+
+QVariant LogModel::data(const QModelIndex &index, int role) const
+{
+ if (index.row() < 0 || index.row() >= m_numLines)
+ return QVariant();
+
+ auto row = index.row();
+ auto realRow = (row + m_firstLine) % m_maxLines;
+ if (role == Qt::DisplayRole || role == Qt::EditRole)
+ {
+ return m_content[realRow].line;
+ }
+ if(role == LevelRole)
+ {
+ return m_content[realRow].level;
+ }
+
+ return QVariant();
+}
+
+void LogModel::append(MessageLevel::Enum level, QString line)
+{
+ int lineNum = (m_firstLine + m_numLines) % m_maxLines;
+ // overflow
+ if(m_numLines == m_maxLines)
+ {
+ if(m_stopOnOverflow)
+ {
+ // nothing more to do, the buffer is full
+ return;
+ }
+ beginRemoveRows(QModelIndex(), 0, 0);
+ m_firstLine = (m_firstLine + 1) % m_maxLines;
+ m_numLines --;
+ endRemoveRows();
+ }
+ else if (m_numLines == m_maxLines - 1 && m_stopOnOverflow)
+ {
+ level = MessageLevel::Fatal;
+ line = m_overflowMessage;
+ }
+ beginInsertRows(QModelIndex(), m_numLines, m_numLines);
+ m_numLines ++;
+ m_content[lineNum].level = level;
+ m_content[lineNum].line = line;
+ endInsertRows();
+}
+
+void LogModel::clear()
+{
+ beginResetModel();
+ m_firstLine = 0;
+ m_numLines = 0;
+ endResetModel();
+}
+
+QString LogModel::toPlainText()
+{
+ QString out;
+ out.reserve(m_numLines * 80);
+ for(int i = 0; i < m_numLines; i++)
+ {
+ QString & line = m_content[(m_firstLine + i) % m_maxLines].line;
+ out.append(line + '\n');
+ }
+ out.squeeze();
+ return out;
+}
+
+void LogModel::setMaxLines(int maxLines)
+{
+ // no-op
+ if(maxLines == m_maxLines)
+ {
+ return;
+ }
+ // if it all still fits in the buffer, just resize it
+ if(m_firstLine + m_numLines < maxLines)
+ {
+ m_maxLines = maxLines;
+ m_content.resize(maxLines);
+ return;
+ }
+ // otherwise, we need to reorganize the data because it crosses the wrap boundary
+ QVector<entry> newContent;
+ newContent.resize(maxLines);
+ if(m_numLines <= maxLines)
+ {
+ // if it all fits in the new buffer, just copy it over
+ for(int i = 0; i < m_numLines; i++)
+ {
+ newContent[i] = m_content[(m_firstLine + i) % m_maxLines];
+ }
+ m_content.swap(newContent);
+ }
+ else
+ {
+ // if it doesn't fit, part of the data needs to be thrown away (the oldest log messages)
+ int lead = m_numLines - maxLines;
+ beginRemoveRows(QModelIndex(), 0, lead - 1);
+ for(int i = 0; i < maxLines; i++)
+ {
+ newContent[i] = m_content[(m_firstLine + lead + i) % m_maxLines];
+ }
+ m_numLines = m_maxLines;
+ m_content.swap(newContent);
+ endRemoveRows();
+ }
+ m_firstLine = 0;
+ m_maxLines = maxLines;
+}
+
+void LogModel::setStopOnOverflow(bool stop)
+{
+ m_stopOnOverflow = stop;
+}
+
+void LogModel::setOverflowMessage(const QString& overflowMessage)
+{
+ m_overflowMessage = overflowMessage;
+}