From ea39cc542e17ce592dc3c4f2053d534bc458d88e Mon Sep 17 00:00:00 2001
From: "Felix (xq) Queißner" <git@mq32.de>
Date: Sat, 30 May 2020 19:33:47 +0200
Subject: More usability, survives conmans torture nearly with 100%

---
 documentoutlinemodel.cpp | 131 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 131 insertions(+)
 create mode 100644 documentoutlinemodel.cpp

(limited to 'documentoutlinemodel.cpp')

diff --git a/documentoutlinemodel.cpp b/documentoutlinemodel.cpp
new file mode 100644
index 0000000..1787d9e
--- /dev/null
+++ b/documentoutlinemodel.cpp
@@ -0,0 +1,131 @@
+#include "documentoutlinemodel.hpp"
+
+#include <QModelIndex>
+
+DocumentOutlineModel::DocumentOutlineModel() :
+    QAbstractItemModel(),
+    root()
+{
+
+}
+
+void DocumentOutlineModel::beginBuild()
+{
+    beginResetModel();
+    root = Node {
+        nullptr,
+        "<ROOT>",
+        0,
+        QVector<Node> { },
+};
+}
+
+void DocumentOutlineModel::appendH1(const QString &title)
+{
+    root.children.append(Node {
+        &root,
+        title,
+        1,
+        QVector<Node> { },
+    });
+}
+
+void DocumentOutlineModel::appendH2(const QString &title)
+{
+    if(root.children.size() == 0) {
+        root.children.append(Node {
+            &root,
+            "<missing layer>",
+            1,
+            QVector<Node> { },
+        });
+    }
+    auto & parent = root.children.last();
+    parent.children.append(Node {
+        &parent,
+        title,
+        2,
+        QVector<Node> { },
+    });
+}
+
+void DocumentOutlineModel::appendH3(const QString &title)
+{
+
+}
+
+void DocumentOutlineModel::endBuild()
+{
+    endResetModel();
+}
+
+QModelIndex DocumentOutlineModel::index(int row, int column, const QModelIndex &parent) const
+{
+    if (not hasIndex(row, column, parent))
+        return QModelIndex();
+
+    Node const * parentItem;
+
+    if (!parent.isValid())
+        parentItem = &this->root;
+    else
+        parentItem = static_cast<Node*>(parent.internalPointer());
+
+    Node const * childItem = &parentItem->children[row];
+    if (childItem)
+        return createIndex(row, column, reinterpret_cast<quintptr>(childItem));
+    return QModelIndex();
+
+}
+
+QModelIndex DocumentOutlineModel::parent(const QModelIndex &child) const
+{
+    if (!child.isValid())
+        return QModelIndex();
+
+    Node const  *childItem = static_cast<Node const *>(child.internalPointer());
+    Node const * parent = childItem->parent;
+
+    if (parent == &root)
+        return QModelIndex();
+
+    return createIndex(
+        parent - parent->parent->children.data(),
+        0,
+        reinterpret_cast<quintptr>(parent));
+}
+
+int DocumentOutlineModel::rowCount(const QModelIndex &parent) const
+{
+    Node const *parentItem;
+    if (parent.column() > 0)
+        return 0;
+
+    if (!parent.isValid())
+        parentItem = &root;
+    else
+        parentItem = static_cast<Node const *>(parent.internalPointer());
+
+    return parentItem->children.size();
+}
+
+int DocumentOutlineModel::columnCount(const QModelIndex &parent) const
+{
+    return 1;
+}
+
+QVariant DocumentOutlineModel::data(const QModelIndex &index, int role) const
+{
+    if (!index.isValid())
+        return QVariant();
+
+    if (index.column() != 0)
+        return QVariant();
+
+    if (role != Qt::DisplayRole)
+        return QVariant();
+
+    Node const *item = static_cast<Node const*>(index.internalPointer());
+
+    return item->title;
+}
-- 
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