QmlPropjectManager: Fix ownership

Explicit ownership has the advatage that you can see if you leak memory.
Removed overused casting too.

Change-Id: I2336aa07525742d6c1415471ea15ed101406a90c
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

4 files changed, 53 insertions, 37 deletions

diff --git a/src/plugins/qmlprojectmanager/fileformat/filefilteritems.h b/src/plugins/qmlprojectmanager/fileformat/filefilteritems.h
index 38ad7262fc..169e8dd796 100644
--- a/src/plugins/qmlprojectmanager/fileformat/filefilteritems.h
+++ b/src/plugins/qmlprojectmanager/fileformat/filefilteritems.h
@@ -25,8 +25,6 @@
 
 #pragma once
 
-#include "qmlprojectitem.h"
-
 #include <QObject>
 #include <QRegularExpression>
 #include <QSet>
@@ -38,6 +36,17 @@ namespace Utils { class FileSystemWatcher; }
 
 namespace QmlProjectManager {
 
+class QmlProjectContentItem : public QObject
+{
+    // base class for all elements that should be direct children of Project element
+    Q_OBJECT
+
+public:
+    QmlProjectContentItem(QObject *parent = nullptr)
+        : QObject(parent)
+    {}
+};
+
 class FileFilterBaseItem : public QmlProjectContentItem {
     Q_OBJECT
 
diff --git a/src/plugins/qmlprojectmanager/fileformat/qmlprojectfileformat.cpp b/src/plugins/qmlprojectmanager/fileformat/qmlprojectfileformat.cpp
index ec84d34d4a..a55569d069 100644
--- a/src/plugins/qmlprojectmanager/fileformat/qmlprojectfileformat.cpp
+++ b/src/plugins/qmlprojectmanager/fileformat/qmlprojectfileformat.cpp
@@ -28,8 +28,10 @@
 #include "filefilteritems.h"
 #include <qmljs/qmljssimplereader.h>
 
-#include <QVariant>
 #include <QDebug>
+#include <QVariant>
+
+#include <memory>
 
 enum {
     debug = false
@@ -37,7 +39,9 @@ enum {
 
 namespace   {
 
-QmlProjectManager::FileFilterBaseItem *setupFileFilterItem(QmlProjectManager::FileFilterBaseItem *fileFilterItem, const QmlJS::SimpleReaderNode::Ptr &node)
+std::unique_ptr<QmlProjectManager::FileFilterBaseItem> setupFileFilterItem(
+    std::unique_ptr<QmlProjectManager::FileFilterBaseItem> fileFilterItem,
+    const QmlJS::SimpleReaderNode::Ptr &node)
 {
     const auto directoryProperty = node->property(QLatin1String("directory"));
     if (directoryProperty.isValid())
@@ -148,17 +152,24 @@ QmlProjectItem *QmlProjectFileFormat::parseProjectFile(const Utils::FilePath &fi
                 qDebug() << "reading type:" << childNode->name();
 
             if (childNode->name() == QLatin1String("QmlFiles")) {
-                projectItem->appendContent(setupFileFilterItem(new FileFilterItem("*.qml"), childNode));
+                projectItem->appendContent(
+                    setupFileFilterItem(std::make_unique<FileFilterItem>("*.qml"), childNode));
             } else if (childNode->name() == QLatin1String("JavaScriptFiles")) {
-                projectItem->appendContent(setupFileFilterItem(new FileFilterItem("*.js"), childNode));
+                projectItem->appendContent(
+                    setupFileFilterItem(std::make_unique<FileFilterItem>("*.js"), childNode));
             } else if (childNode->name() == QLatin1String("ImageFiles")) {
-                projectItem->appendContent(setupFileFilterItem(new ImageFileFilterItem(projectItem), childNode));
+                projectItem->appendContent(
+                    setupFileFilterItem(std::make_unique<ImageFileFilterItem>(projectItem),
+                                        childNode));
             } else if (childNode->name() == QLatin1String("CssFiles")) {
-                projectItem->appendContent(setupFileFilterItem(new FileFilterItem("*.css"), childNode));
+                projectItem->appendContent(
+                    setupFileFilterItem(std::make_unique<FileFilterItem>("*.css"), childNode));
             } else if (childNode->name() == QLatin1String("FontFiles")) {
-                projectItem->appendContent(setupFileFilterItem(new FileFilterItem("*.ttf;*.otf"), childNode));
+                projectItem->appendContent(
+                    setupFileFilterItem(std::make_unique<FileFilterItem>("*.ttf;*.otf"), childNode));
             } else if (childNode->name() == QLatin1String("Files")) {
-                projectItem->appendContent(setupFileFilterItem(new FileFilterBaseItem(), childNode));
+                projectItem->appendContent(
+                    setupFileFilterItem(std::make_unique<FileFilterBaseItem>(), childNode));
             } else if (childNode->name() == "Environment") {
                 const auto properties = childNode->properties();
                 auto i = properties.constBegin();
diff --git a/src/plugins/qmlprojectmanager/fileformat/qmlprojectitem.cpp b/src/plugins/qmlprojectmanager/fileformat/qmlprojectitem.cpp
index 806c873817..c1c51b2f2d 100644
--- a/src/plugins/qmlprojectmanager/fileformat/qmlprojectitem.cpp
+++ b/src/plugins/qmlprojectmanager/fileformat/qmlprojectitem.cpp
@@ -40,13 +40,12 @@ void QmlProjectItem::setSourceDirectory(const QString &directoryPath)
 
     m_sourceDirectory = directoryPath;
 
-    for (auto contentElement : qAsConst(m_content)) {
-        auto fileFilter = qobject_cast<FileFilterBaseItem*>(contentElement);
-        if (fileFilter) {
-            fileFilter->setDefaultDirectory(directoryPath);
-            connect(fileFilter, &FileFilterBaseItem::filesChanged,
-                    this, &QmlProjectItem::qmlFilesChanged);
-        }
+    for (auto &fileFilter : m_content) {
+        fileFilter->setDefaultDirectory(directoryPath);
+        connect(fileFilter.get(),
+                &FileFilterBaseItem::filesChanged,
+                this,
+                &QmlProjectItem::qmlFilesChanged);
     }
 }
 
@@ -99,12 +98,10 @@ QStringList QmlProjectItem::files() const
 {
     QSet<QString> files;
 
-    for (const auto contentElement : qAsConst(m_content)) {
-        if (auto fileFilter = qobject_cast<const FileFilterBaseItem *>(contentElement)) {
-            const QStringList fileList = fileFilter->files();
-            for (const QString &file : fileList) {
-                files.insert(file);
-            }
+    for (const auto &fileFilter : m_content) {
+        const QStringList fileList = fileFilter->files();
+        for (const QString &file : fileList) {
+            files.insert(file);
         }
     }
     return Utils::toList(files);
@@ -118,9 +115,8 @@ QStringList QmlProjectItem::files() const
   */
 bool QmlProjectItem::matchesFile(const QString &filePath) const
 {
-    return Utils::contains(m_content, [&filePath](const QmlProjectContentItem *item) {
-        auto fileFilter = qobject_cast<const FileFilterBaseItem *>(item);
-        return fileFilter && fileFilter->matchesFile(filePath);
+    return Utils::contains(m_content, [&filePath](const auto &fileFilter) {
+        return fileFilter->matchesFile(filePath);
     });
 }
 
diff --git a/src/plugins/qmlprojectmanager/fileformat/qmlprojectitem.h b/src/plugins/qmlprojectmanager/fileformat/qmlprojectitem.h
index d437db6114..d95617ef90 100644
--- a/src/plugins/qmlprojectmanager/fileformat/qmlprojectitem.h
+++ b/src/plugins/qmlprojectmanager/fileformat/qmlprojectitem.h
@@ -25,21 +25,18 @@
 
 #pragma once
 
+#include "filefilteritems.h"
+
 #include <utils/environment.h>
 
 #include <QObject>
 #include <QSet>
 #include <QStringList>
 
-namespace QmlProjectManager {
-
-class QmlProjectContentItem : public QObject {
-    // base class for all elements that should be direct children of Project element
-    Q_OBJECT
+#include <memory>
+#include <vector>
 
-public:
-    QmlProjectContentItem(QObject *parent = nullptr) : QObject(parent) {}
-};
+namespace QmlProjectManager {
 
 class QmlProjectItem : public QObject
 {
@@ -91,9 +88,12 @@ public:
     void setShaderToolArgs(const QStringList &args) {m_shaderToolArgs = args; }
 
     QStringList shaderToolFiles() const { return m_shaderToolFiles; }
-    void setShaderToolFiles(const QStringList &files) {m_shaderToolFiles = files; }
+    void setShaderToolFiles(const QStringList &files) { m_shaderToolFiles = files; }
 
-    void appendContent(QmlProjectContentItem *item) { m_content.append(item); }
+    void appendContent(std::unique_ptr<FileFilterBaseItem> item)
+    {
+        m_content.push_back(std::move(item));
+    }
 
     Utils::EnvironmentItems environment() const;
     void addToEnviroment(const QString &key, const QString &value);
@@ -112,7 +112,7 @@ protected:
     QString m_mainFile;
     QString m_mainUiFile;
     Utils::EnvironmentItems m_environment;
-    QVector<QmlProjectContentItem *> m_content; // content property
+    std::vector<std::unique_ptr<FileFilterBaseItem>> m_content; // content property
     bool m_forceFreeType = false;
     bool m_qtForMCUs = false;
     bool m_qt6Project = false;