Meson: Flatten directory hierarchy

Keep tests/ and icons/ but put the rest into the toplevel.

The previous setup was so different from the rest of the bunch that
it regularly stuck out in maintenance tasks.

Change-Id: I69821be6268f69682353a388f6bb1fa343215303
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/mesonprojectmanager/toolsmodel.cpp

@@ -0,0 +1,101 @@
+// Copyright (C) 2020 Alexis Jeandet.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0+ OR GPL-3.0 WITH Qt-GPL-exception-1.0
+
+#include "toolsmodel.h"
+
+#include "tooltreeitem.h"
+#include "mesontools.h"
+
+#include <projectexplorer/projectexplorerconstants.h>
+#include <utils/qtcassert.h>
+#include <utils/stringutils.h>
+
+namespace MesonProjectManager {
+namespace Internal {
+
+ToolsModel::ToolsModel()
+{
+    setHeader({tr("Name"), tr("Location")});
+    rootItem()->appendChild(
+        new Utils::StaticTreeItem({ProjectExplorer::Constants::msgAutoDetected()},
+                                  {ProjectExplorer::Constants::msgAutoDetectedToolTip()}));
+    rootItem()->appendChild(new Utils::StaticTreeItem(ProjectExplorer::Constants::msgManual()));
+    for (const auto &tool : MesonTools::tools()) {
+        addMesonTool(tool);
+    }
+}
+
+ToolTreeItem *ToolsModel::mesoneToolTreeItem(const QModelIndex &index) const
+{
+    return itemForIndexAtLevel<2>(index);
+}
+
+void ToolsModel::updateItem(const Utils::Id &itemId, const QString &name, const Utils::FilePath &exe)
+{
+    auto treeItem = findItemAtLevel<2>([itemId](ToolTreeItem *n) { return n->id() == itemId; });
+    QTC_ASSERT(treeItem, return );
+    treeItem->update(name, exe);
+}
+
+void ToolsModel::addMesonTool()
+{
+    manualGroup()->appendChild(new ToolTreeItem{uniqueName(tr("New Meson or Ninja tool"))});
+}
+
+void ToolsModel::removeMesonTool(ToolTreeItem *item)
+{
+    QTC_ASSERT(item, return );
+    const Utils::Id id = item->id();
+    destroyItem(item);
+    m_itemsToRemove.enqueue(id);
+}
+
+ToolTreeItem *ToolsModel::cloneMesonTool(ToolTreeItem *item)
+{
+    QTC_ASSERT(item, return nullptr);
+    auto newItem = new ToolTreeItem(*item);
+    manualGroup()->appendChild(newItem);
+    return item;
+}
+
+void ToolsModel::apply()
+{
+    forItemsAtLevel<2>([this](ToolTreeItem *item) {
+        if (item->hasUnsavedChanges()) {
+            MesonTools::updateTool(item->id(), item->name(), item->executable());
+            item->setSaved();
+            emit this->dataChanged(item->index(), item->index());
+        }
+    });
+    while (!m_itemsToRemove.isEmpty()) {
+        MesonTools::removeTool(m_itemsToRemove.dequeue());
+    }
+}
+
+void ToolsModel::addMesonTool(const MesonTools::Tool_t &tool)
+{
+    if (tool->autoDetected())
+        autoDetectedGroup()->appendChild(new ToolTreeItem(tool));
+    else
+        manualGroup()->appendChild(new ToolTreeItem(tool));
+}
+
+QString ToolsModel::uniqueName(const QString &baseName)
+{
+    QStringList names;
+    forItemsAtLevel<2>([&names](auto *item) { names << item->name(); });
+    return Utils::makeUniquelyNumbered(baseName, names);
+}
+
+Utils::TreeItem *ToolsModel::autoDetectedGroup() const
+{
+    return rootItem()->childAt(0);
+}
+
+Utils::TreeItem *ToolsModel::manualGroup() const
+{
+    return rootItem()->childAt(1);
+}
+
+} // namespace Internal
+} // namespace MesonProjectManager