From ee3f7eafae9e2e570c95e1afa9bea156ba3bf736 Mon Sep 17 00:00:00 2001
From: Jan Darmochwal
Date: Sun, 3 Oct 2010 18:39:42 +0200
Subject: TreeView for sessions (replaces ListView)

TreeView with SessionTreeModel replaces the old List View

Other changes:
* fixed bad copy and paste in CMakeLists.txt
* added make clean to build.sh
* removed moc_ and ui_ files from src
---
 src/sessiontreemodel.cpp | 169 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 169 insertions(+)
 create mode 100644 src/sessiontreemodel.cpp

(limited to 'src/sessiontreemodel.cpp')

diff --git a/src/sessiontreemodel.cpp b/src/sessiontreemodel.cpp
new file mode 100644
index 0000000..d3cd7ac
--- /dev/null
+++ b/src/sessiontreemodel.cpp
@@ -0,0 +1,169 @@
+#include <QIcon>
+#include <QString>
+#include <QFileInfo>
+#include "sessiontreemodel.h"
+#include "sessiontreeitem.h"
+
+SessionTreeModel::SessionTreeModel(QObject *parent)
+    : QAbstractItemModel(parent)
+{
+    printf("new SessionTreeModel created\n");
+    root_ = new SessionTreeItem("dummy");
+}
+
+SessionTreeModel::~SessionTreeModel()
+{
+    delete root_;
+}
+
+int SessionTreeModel::columnCount(const QModelIndex &parent) const
+ {
+    //TODO: check if this is right for invalid parent of root_
+    return 1;
+ }
+
+int SessionTreeModel::rowCount(const QModelIndex &parent) const
+{
+    SessionTreeItem* parentItem;
+    if (parent.column() > 0)
+    {
+        return 0;
+    }
+
+    if (!parent.isValid())
+    {
+        parentItem = root_;
+    }
+    else
+    {
+        parentItem = static_cast<SessionTreeItem*>(parent.internalPointer());
+    }
+
+    return parentItem->childCount();
+}
+
+QVariant SessionTreeModel::data(const QModelIndex &index, int role) const
+{
+    printf("request for model row %d role %d\n", index.row(), role);
+
+    if (!index.isValid()) {
+        return QVariant();
+    }
+
+    SessionTreeItem* item =
+            static_cast<SessionTreeItem*>(index.internalPointer());
+
+    const Session* s = item->session();
+    if (s) {
+        if (role == Qt::DisplayRole)
+            return s->shortDescription();
+        if (role == Qt::ToolTipRole)
+            return s->description();
+        if (role == Qt::DecorationRole) {
+            // TODO: use cache for icons
+            if (index.column() == 0) { // TODO: is this line needed?
+                QString icon(s->icon());
+
+                if (QFileInfo(icon).isAbsolute()) {
+                    // try to load icon from file
+                    return QIcon(icon);
+                } else {
+                    // try to load icon from QResource
+                    return QIcon(":" + icon.toLower());
+                }
+            }
+        }
+    } else if (role == Qt::DisplayRole) {
+        // this is a section item (X Sessions / Virtual Sessions)
+        return item->text();
+    }
+
+    return QVariant();
+}
+
+Qt::ItemFlags SessionTreeModel::flags(const QModelIndex &index) const
+{
+    if (!index.isValid()) {
+        return 0;
+    }
+
+    SessionTreeItem* item =
+            static_cast<SessionTreeItem*>(index.internalPointer());
+
+    if (item->session()) {
+        return Qt::ItemIsEnabled | Qt::ItemIsSelectable;
+    } else {
+        return Qt::ItemIsEnabled;
+    }
+}
+
+QVariant SessionTreeModel::headerData(int section, Qt::Orientation orientation,
+                                      int role) const
+{
+    return QVariant();
+}
+
+QModelIndex SessionTreeModel::index(int row, int column,
+                                    const QModelIndex &parent)
+const
+{
+    if (!hasIndex(row, column, parent)) {
+        return QModelIndex();
+    }
+
+    SessionTreeItem *parentItem;
+
+    if (!parent.isValid()) {
+        parentItem = root_;
+    } else {
+        parentItem = static_cast<SessionTreeItem*>(parent.internalPointer());
+    }
+
+    SessionTreeItem *childItem = parentItem->child(row);
+    if (childItem) {
+        return createIndex(row, column, childItem);
+    } else {
+        return QModelIndex();
+    }
+}
+
+QModelIndex SessionTreeModel::parent(const QModelIndex &index) const
+{
+    if (!index.isValid()) {
+        return QModelIndex();
+    }
+
+    SessionTreeItem *childItem = static_cast<SessionTreeItem*>(index.internalPointer());
+    SessionTreeItem *parentItem = childItem->parent();
+
+    if (parentItem == root_) {
+        return QModelIndex();
+    }
+
+    return createIndex(parentItem->row(), 0, parentItem);
+}
+
+void SessionTreeModel::addItems(const QList<Session*>& sessions, const QString& section)
+{
+    SessionTreeItem* parentItem;
+
+    bool sectionExists = false;
+
+    for (int i = 0; i < root_->childCount(); ++i) {
+        SessionTreeItem* item = root_->child(i);
+        if (item->text() == section) {
+            parentItem = item;
+            sectionExists = true;
+            break;
+        }
+    }
+
+    if (!sectionExists) {
+        parentItem = new SessionTreeItem(section, root_);
+        root_->appendChild(parentItem);
+    }
+
+    foreach (Session* s, sessions) {
+        parentItem->appendChild(new SessionTreeItem(s, parentItem));
+    }
+}
-- 
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