QmlDesigner: Add convenience functions

Those helpers make it easy to filter by types.

Change-Id: I36cedba043a1c89c68b98ef03a309ec0d8e67475
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>

src/plugins/qmldesigner/designercore/include/abstractview.h

@@ -164,6 +164,7 @@ public:
     bool hasModelNodeForInternalId(qint32 internalId) const;
 
     QList<ModelNode> allModelNodes() const;
+    QList<ModelNode> allModelNodesOfType(const TypeName &typeName) const;
 
     void emitDocumentMessage(const QList<DocumentMessage> &errors, const QList<DocumentMessage> &warnings = QList<DocumentMessage>());
     void emitDocumentMessage(const QString &error);

src/plugins/qmldesigner/designercore/include/modelnode.h

@@ -107,6 +107,8 @@ public:
     bool hasParentProperty() const;
 
     const QList<ModelNode> directSubModelNodes() const;
+    const QList<ModelNode> directSubModelNodesOfType(const TypeName &typeName) const;
+
     const QList<ModelNode> allSubModelNodes() const;
     const QList<ModelNode> allSubModelNodesAndThisNode() const;
     bool hasAnySubModelNodes() const;

src/plugins/qmldesigner/designercore/model/abstractview.cpp

@@ -39,6 +39,7 @@
 
 #include <coreplugin/helpmanager.h>
 #include <utils/qtcassert.h>
+#include <utils/algorithm.h>
 
 #include <QRegExp>
 
@@ -635,6 +636,13 @@ QList<ModelNode> AbstractView::allModelNodes() const
     return toModelNodeList(model()->d->allNodes());
 }
 
+QList<ModelNode> AbstractView::allModelNodesOfType(const TypeName &typeName) const
+{
+    return Utils::filtered(allModelNodes(), [typeName](const ModelNode &node){
+        return node.metaInfo().isValid() && node.metaInfo().isSubclassOf(typeName);
+    });
+}
+
 void AbstractView::emitDocumentMessage(const QString &error)
 {
     emitDocumentMessage({DocumentMessage(error)});

src/plugins/qmldesigner/designercore/model/modelnode.cpp

@@ -42,6 +42,8 @@
 #include "nodeproperty.h"
 #include <rewriterview.h>
 
+#include <utils/algorithm.h>
+
 #include <QHash>
 #include <QRegExp>
 #include <QSet>
@@ -775,6 +777,13 @@ const QList<ModelNode> ModelNode::directSubModelNodes() const
     return toModelNodeList(internalNode()->allDirectSubNodes(), view());
 }
 
+const QList<ModelNode> ModelNode::directSubModelNodesOfType(const TypeName &typeName) const
+{
+    return Utils::filtered(directSubModelNodes(), [typeName](const ModelNode &node){
+        return node.metaInfo().isValid() && node.metaInfo().isSubclassOf(typeName);
+    });
+}
+
 
 /*!
 \brief returns all ModelNodes that are direct or indirect children of this ModelNode