Outliner: Port sequencer elements to new tree-element design

Continuation of work started in 2e221de4ceee and 249e4df110e0.

Adds new tree-element classes for sequences, strips and strip
duplicates.

5 files changed, 173 insertions, 49 deletions

diff --git a/source/blender/editors/space_outliner/CMakeLists.txt b/source/blender/editors/space_outliner/CMakeLists.txt
index 60b881fb32b..bc6db978a4f 100644
--- a/source/blender/editors/space_outliner/CMakeLists.txt
+++ b/source/blender/editors/space_outliner/CMakeLists.txt
@@ -67,6 +67,7 @@ set(SRC
   tree/tree_element_overrides.cc
   tree/tree_element_rna.cc
   tree/tree_element_scene_objects.cc
+  tree/tree_element_seq.cc
   tree/tree_element_view_layer.cc
 
   outliner_intern.hh
@@ -84,6 +85,7 @@ set(SRC
   tree/tree_element_overrides.hh
   tree/tree_element_rna.hh
   tree/tree_element_scene_objects.hh
+  tree/tree_element_seq.hh
   tree/tree_element_view_layer.hh
 )
 
diff --git a/source/blender/editors/space_outliner/outliner_tree.cc b/source/blender/editors/space_outliner/outliner_tree.cc
index 8ad40b503bd..eb885eba20d 100644
--- a/source/blender/editors/space_outliner/outliner_tree.cc
+++ b/source/blender/editors/space_outliner/outliner_tree.cc
@@ -928,57 +928,12 @@ TreeElement *outliner_add_element(SpaceOutliner *space_outliner,
                 TSE_GP_LAYER,
                 TSE_RNA_STRUCT,
                 TSE_RNA_PROPERTY,
-                TSE_RNA_ARRAY_ELEM)) {
+                TSE_RNA_ARRAY_ELEM,
+                TSE_SEQUENCE,
+                TSE_SEQ_STRIP,
+                TSE_SEQUENCE_DUP)) {
     BLI_assert_msg(false, "Element type should already use new AbstractTreeElement design");
   }
-  else if (type == TSE_SEQUENCE) {
-    Sequence *seq = (Sequence *)idv;
-
-    /*
-     * The idcode is a little hack, but the outliner
-     * only check te->idcode if te->type is equal to zero,
-     * so this is "safe".
-     */
-    te->idcode = seq->type;
-    te->directdata = seq;
-    te->name = seq->name + 2;
-
-    if (!(seq->type & SEQ_TYPE_EFFECT)) {
-      /*
-       * This work like the sequence.
-       * If the sequence have a name (not default name)
-       * show it, in other case put the filename.
-       */
-
-      if (seq->type == SEQ_TYPE_META) {
-        LISTBASE_FOREACH (Sequence *, p, &seq->seqbase) {
-          outliner_add_element(space_outliner, &te->subtree, (void *)p, te, TSE_SEQUENCE, index);
-        }
-      }
-      else {
-        outliner_add_element(
-            space_outliner, &te->subtree, (void *)seq->strip, te, TSE_SEQ_STRIP, index);
-      }
-    }
-  }
-  else if (type == TSE_SEQ_STRIP) {
-    Strip *strip = (Strip *)idv;
-
-    if (strip->dir[0] != '\0') {
-      te->name = strip->dir;
-    }
-    else {
-      te->name = IFACE_("Strip None");
-    }
-    te->directdata = strip;
-  }
-  else if (type == TSE_SEQUENCE_DUP) {
-    Sequence *seq = (Sequence *)idv;
-
-    te->idcode = seq->type;
-    te->directdata = seq;
-    te->name = seq->strip->stripdata->name;
-  }
 
   if (tree_element_warnings_get(te, nullptr, nullptr)) {
     te->flag |= TE_HAS_WARNING;
diff --git a/source/blender/editors/space_outliner/tree/tree_element.cc b/source/blender/editors/space_outliner/tree/tree_element.cc
index bed28e59f0b..5685d8964f5 100644
--- a/source/blender/editors/space_outliner/tree/tree_element.cc
+++ b/source/blender/editors/space_outliner/tree/tree_element.cc
@@ -35,6 +35,7 @@
 #include "tree_element_overrides.hh"
 #include "tree_element_rna.hh"
 #include "tree_element_scene_objects.hh"
+#include "tree_element_seq.hh"
 #include "tree_element_view_layer.hh"
 
 #include "../outliner_intern.hh"
@@ -96,6 +97,14 @@ std::unique_ptr<AbstractTreeElement> AbstractTreeElement::createFromType(const i
     case TSE_RNA_ARRAY_ELEM:
       return std::make_unique<TreeElementRNAArrayElement>(
           legacy_te, *reinterpret_cast<PointerRNA *>(idv), legacy_te.index);
+    case TSE_SEQUENCE:
+      return std::make_unique<TreeElementSequence>(legacy_te, *reinterpret_cast<Sequence *>(idv));
+    case TSE_SEQ_STRIP:
+      return std::make_unique<TreeElementSequenceStrip>(legacy_te,
+                                                        *reinterpret_cast<Strip *>(idv));
+    case TSE_SEQUENCE_DUP:
+      return std::make_unique<TreeElementSequenceStripDuplicate>(
+          legacy_te, *reinterpret_cast<Sequence *>(idv));
     default:
       break;
   }
diff --git a/source/blender/editors/space_outliner/tree/tree_element_seq.cc b/source/blender/editors/space_outliner/tree/tree_element_seq.cc
new file mode 100644
index 00000000000..33ab51e7fff
--- /dev/null
+++ b/source/blender/editors/space_outliner/tree/tree_element_seq.cc
@@ -0,0 +1,104 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+/** \file
+ * \ingroup spoutliner
+ */
+
+#include "DNA_outliner_types.h"
+#include "DNA_sequence_types.h"
+
+#include "BLI_listbase.h"
+
+#include "BLT_translation.h"
+
+#include "../outliner_intern.hh"
+#include "tree_element_seq.hh"
+
+namespace blender::ed::outliner {
+
+TreeElementSequence::TreeElementSequence(TreeElement &legacy_te, Sequence &sequence)
+    : AbstractTreeElement(legacy_te), sequence_(sequence)
+{
+  BLI_assert(legacy_te.store_elem->type == TSE_SEQUENCE);
+
+  /*
+   * The idcode is a little hack, but the outliner
+   * only check te->idcode if te->type is equal to zero,
+   * so this is "safe".
+   */
+  legacy_te.idcode = sequence_.type;
+  legacy_te.directdata = &sequence_;
+  legacy_te.name = sequence_.name + 2;
+}
+
+bool TreeElementSequence::expandPoll(const SpaceOutliner & /*space_outliner*/) const
+{
+  return !(sequence_.type & SEQ_TYPE_EFFECT);
+}
+
+void TreeElementSequence::expand(SpaceOutliner &space_outliner) const
+{
+  /*
+   * This work like the sequence.
+   * If the sequence have a name (not default name)
+   * show it, in other case put the filename.
+   */
+
+  if (sequence_.type == SEQ_TYPE_META) {
+    LISTBASE_FOREACH (Sequence *, child, &sequence_.seqbase) {
+      outliner_add_element(
+          &space_outliner, &legacy_te_.subtree, child, &legacy_te_, TSE_SEQUENCE, 0);
+    }
+  }
+  else {
+    outliner_add_element(
+        &space_outliner, &legacy_te_.subtree, sequence_.strip, &legacy_te_, TSE_SEQ_STRIP, 0);
+  }
+}
+
+/* -------------------------------------------------------------------- */
+/* Strip */
+
+TreeElementSequenceStrip::TreeElementSequenceStrip(TreeElement &legacy_te, Strip &strip)
+    : AbstractTreeElement(legacy_te)
+{
+  BLI_assert(legacy_te.store_elem->type == TSE_SEQ_STRIP);
+
+  if (strip.dir[0] != '\0') {
+    legacy_te_.name = strip.dir;
+  }
+  else {
+    legacy_te_.name = IFACE_("Strip None");
+  }
+  legacy_te_.directdata = &strip;
+}
+
+/* -------------------------------------------------------------------- */
+/* Strip Duplicate */
+
+TreeElementSequenceStripDuplicate::TreeElementSequenceStripDuplicate(TreeElement &legacy_te,
+                                                                     Sequence &sequence)
+    : AbstractTreeElement(legacy_te)
+{
+  BLI_assert(legacy_te.store_elem->type == TSE_SEQUENCE_DUP);
+
+  legacy_te_.idcode = sequence.type;
+  legacy_te_.directdata = &sequence;
+  legacy_te_.name = sequence.strip->stripdata->name;
+}
+
+}  // namespace blender::ed::outliner
diff --git a/source/blender/editors/space_outliner/tree/tree_element_seq.hh b/source/blender/editors/space_outliner/tree/tree_element_seq.hh
new file mode 100644
index 00000000000..72f13750538
--- /dev/null
+++ b/source/blender/editors/space_outliner/tree/tree_element_seq.hh
@@ -0,0 +1,54 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+/** \file
+ * \ingroup spoutliner
+ */
+
+#pragma once
+
+#include "tree_element.hh"
+
+struct Sequence;
+struct Strip;
+
+namespace blender::ed::outliner {
+
+class TreeElementSequence : public AbstractTreeElement {
+  Sequence &sequence_;
+
+ public:
+  TreeElementSequence(TreeElement &legacy_te, Sequence &sequence);
+
+  bool expandPoll(const SpaceOutliner &) const override;
+  void expand(SpaceOutliner &) const override;
+};
+
+/* -------------------------------------------------------------------- */
+
+class TreeElementSequenceStrip : public AbstractTreeElement {
+ public:
+  TreeElementSequenceStrip(TreeElement &legacy_te, Strip &strip);
+};
+
+/* -------------------------------------------------------------------- */
+
+class TreeElementSequenceStripDuplicate : public AbstractTreeElement {
+ public:
+  TreeElementSequenceStripDuplicate(TreeElement &legacy_te, Sequence &sequence);
+};
+
+}  // namespace blender::ed::outliner