nodeview: implemented copying/pasting nodes

Re-uses XML-based project saving/loading functions to store nodes, their
parameters, and their connections in a text-based format in the clipboard.

app/project/item/folder/folder.cpp

@@ -20,7 +20,7 @@
 
 #include "folder.h"
 
-#include "common/xmlreadloop.h"
+#include "common/xmlutils.h"
 #include "project/item/footage/footage.h"
 #include "project/item/sequence/sequence.h"
 #include "ui/icons/icons.h"

app/project/item/footage/footage.cpp

@@ -24,7 +24,7 @@
 
 #include "codec/decoder.h"
 #include "common/timecodefunctions.h"
-#include "common/xmlreadloop.h"
+#include "common/xmlutils.h"
 #include "config/config.h"
 #include "ui/icons/icons.h"
 

app/project/item/footage/imagestream.cpp

@@ -20,7 +20,7 @@
 
 #include "imagestream.h"
 
-#include "common/xmlreadloop.h"
+#include "common/xmlutils.h"
 #include "footage.h"
 #include "project/project.h"
 #include "render/colormanager.h"

app/project/item/item.cpp

@@ -76,11 +76,19 @@ const QList<ItemPtr> &Item::children() const
   return children_;
 }
 
-ItemPtr Item::shared_ptr_from_raw(Item *item)
+ItemPtr Item::shared_ptr_from_raw(Item *item, bool traverse)
 {
   for (int i=0;i<children_.size();i++) {
-    if (children_.at(i).get() == item) {
-      return children_.at(i);
+    ItemPtr c = children_.at(i);
+
+    if (c.get() == item) {
+      return c;
+    } else if (traverse && c->CanHaveChildren()) {
+      ItemPtr grandchild = shared_ptr_from_raw(item);
+
+      if (grandchild) {
+        return grandchild;
+      }
     }
   }
 
@@ -147,6 +155,23 @@ void Item::set_project(Project *project)
   project_ = project;
 }
 
+QList<ItemPtr> Item::get_children_of_type(Type type, bool recursive) const
+{
+  QList<ItemPtr> list;
+
+  foreach (ItemPtr item, children_) {
+    if (item->type() == type) {
+      list.append(item);
+    }
+
+    if (recursive && item->CanHaveChildren()) {
+      list.append(item->get_children_of_type(type, recursive));
+    }
+  }
+
+  return list;
+}
+
 bool Item::CanHaveChildren() const
 {
   return false;

app/project/item/item.h

@@ -77,7 +77,7 @@ public:
   Item* child(int i) const;
   const QList<ItemPtr>& children() const;
 
-  ItemPtr shared_ptr_from_raw(Item* item);
+  ItemPtr shared_ptr_from_raw(Item* item, bool traverse = false);
 
   const QString& name() const;
   void set_name(const QString& n);
@@ -97,6 +97,8 @@ public:
   Project* project() const;
   void set_project(Project* project);
 
+  QList<ItemPtr> get_children_of_type(Type type, bool recursive) const;
+
   virtual bool CanHaveChildren() const;
 
   bool ChildExistsWithName(const QString& name);

app/project/item/sequence/sequence.cpp

@@ -25,7 +25,7 @@
 #include "config/config.h"
 #include "common/channellayout.h"
 #include "common/timecodefunctions.h"
-#include "common/xmlreadloop.h"
+#include "common/xmlutils.h"
 #include "node/factory.h"
 #include "panel/panelmanager.h"
 #include "panel/node/node.h"
@@ -110,28 +110,7 @@ void Sequence::Load(QXmlStreamReader *reader, QHash<quintptr, StreamPtr> &, QLis
         Node* node;
 
         if (reader->name() == "node") {
-          QString node_id;
-
-          XMLAttributeLoop(reader, attr) {
-            if (attr.name() == "id") {
-              node_id = attr.value().toString();
-
-              // Currently the only thing we need
-              break;
-            }
-          }
-
-          if (node_id.isEmpty()) {
-            qDebug() << "Found node with no ID";
-            continue;
-          }
-
-          node = NodeFactory::CreateFromID(node_id);
-
-          if (!node) {
-            qDebug() << "Failed to load" << node_id << "- no node with that ID is installed";
-            continue;
-          }
+          node = XMLLoadNode(reader);
         } else {
           node = viewer_output_;
         }
@@ -146,10 +125,7 @@ void Sequence::Load(QXmlStreamReader *reader, QHash<quintptr, StreamPtr> &, QLis
   }
 
   // Make connections
-  foreach (const NodeParam::SerializedConnection& con, desired_connections) {
-    NodeParam::ConnectEdge(output_ptrs.value(con.output),
-                           con.input);
-  }
+  XMLConnectNodes(output_ptrs, desired_connections);
 
   // Ensure this and all children are in the main thread
   // (FIXME: Weird place for this? This should probably be in ProjectLoadManager somehow)

app/project/project.cpp

@@ -23,7 +23,7 @@
 #include <QDir>
 #include <QFileInfo>
 
-#include "common/xmlreadloop.h"
+#include "common/xmlutils.h"
 #include "core.h"
 #include "dialog/progress/progress.h"
 #include "window/mainwindow/mainwindow.h"
@@ -137,3 +137,8 @@ ColorManager *Project::color_manager()
 {
   return &color_manager_;
 }
+
+QList<ItemPtr> Project::get_items_of_type(Item::Type type) const
+{
+  return root_.get_children_of_type(type, true);
+}

app/project/project.h

@@ -63,6 +63,8 @@ public:
 
   ColorManager* color_manager();
 
+  QList<ItemPtr> get_items_of_type(Item::Type type) const;
+
 signals:
   void NameChanged();