finalized very, very basic OTIO support

Ironed out various project and footage loading issues, and a single
cache invalidation issue.

app/task/project/load/CMakeLists.txt

@@ -18,5 +18,7 @@ set(OLIVE_SOURCES
   ${OLIVE_SOURCES}
   task/project/load/load.h
   task/project/load/load.cpp
+  task/project/load/loadbasetask.h
+  task/project/load/loadbasetask.cpp
   PARENT_SCOPE
 )

app/task/project/load/load.cpp

@@ -30,14 +30,13 @@
 OLIVE_NAMESPACE_ENTER
 
 ProjectLoadTask::ProjectLoadTask(const QString &filename) :
-  filename_(filename)
+  ProjectLoadBaseTask(filename)
 {
-  SetTitle(tr("Loading '%1'").arg(filename));
 }
 
 bool ProjectLoadTask::Run()
 {
-  QFile project_file(filename_);
+  QFile project_file(GetFilename());
 
   if (project_file.open(QFile::ReadOnly | QFile::Text)) {
     QXmlStreamReader reader(&project_file);
@@ -62,7 +61,7 @@ bool ProjectLoadTask::Run()
           } else if (reader.name() == QStringLiteral("project")) {
             project_ = std::make_shared<Project>();
 
-            project_->set_filename(filename_);
+            project_->set_filename(GetFilename());
 
             project_->Load(&reader, &layout_info_, &IsCancelled());
 
@@ -95,7 +94,7 @@ bool ProjectLoadTask::Run()
     }
 
   } else {
-    SetError(tr("Failed to read file \"%1\" for reading.").arg(filename_));
+    SetError(tr("Failed to read file \"%1\" for reading.").arg(GetFilename()));
     return false;
   }
 }

app/task/project/load/load.h

@@ -21,50 +21,20 @@
 #ifndef PROJECTLOADMANAGER_H
 #define PROJECTLOADMANAGER_H
 
-#include "project/project.h"
-#include "task/task.h"
+#include "loadbasetask.h"
 #include "window/mainwindow/mainwindowlayoutinfo.h"
 
 OLIVE_NAMESPACE_ENTER
 
-class ProjectLoadTask : public Task
+class ProjectLoadTask : public ProjectLoadBaseTask
 {
   Q_OBJECT
 public:
   ProjectLoadTask(const QString& filename);
 
-  ProjectPtr GetLoadedProject() const
-  {
-    return project_;
-  }
-
-  MainWindowLayoutInfo GetLoadedLayout() const
-  {
-    return layout_info_;
-  }
-
-  /**
-   * @brief Returns the filename the project was saved as, but not necessarily where it is now
-   *
-   * May help for resolving relative paths.
-   */
-  const QString& GetFilenameProjectWasSavedAs() const
-  {
-    return project_saved_url_;
-  }
-
 protected:
   virtual bool Run() override;
 
-private:
-  ProjectPtr project_;
-
-  MainWindowLayoutInfo layout_info_;
-
-  QString project_saved_url_;
-
-  QString filename_;
-
 };
 
 OLIVE_NAMESPACE_EXIT

app/task/project/load/loadbasetask.cpp

@@ -0,0 +1,32 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2019 Olive Team
+
+  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 3 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, see <http://www.gnu.org/licenses/>.
+
+***/
+
+#include "loadbasetask.h"
+
+OLIVE_NAMESPACE_ENTER
+
+ProjectLoadBaseTask::ProjectLoadBaseTask(const QString &filename) :
+  project_(nullptr),
+  filename_(filename)
+{
+  SetTitle(tr("Loading '%1'").arg(filename));
+}
+
+OLIVE_NAMESPACE_EXIT

app/task/project/load/loadbasetask.h

@@ -0,0 +1,74 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2019 Olive Team
+
+  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 3 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, see <http://www.gnu.org/licenses/>.
+
+***/
+
+#ifndef PROJECTLOADBASETASK_H
+#define PROJECTLOADBASETASK_H
+
+#include "project/project.h"
+#include "task/task.h"
+
+OLIVE_NAMESPACE_ENTER
+
+class ProjectLoadBaseTask : public Task
+{
+  Q_OBJECT
+public:
+  ProjectLoadBaseTask(const QString& filename);
+
+  ProjectPtr GetLoadedProject() const
+  {
+    return project_;
+  }
+
+  MainWindowLayoutInfo GetLoadedLayout() const
+  {
+    return layout_info_;
+  }
+
+  /**
+   * @brief Returns the filename the project was saved as, but not necessarily where it is now
+   *
+   * May help for resolving relative paths.
+   */
+  const QString& GetFilenameProjectWasSavedAs() const
+  {
+    return project_saved_url_;
+  }
+
+  const QString& GetFilename() const
+  {
+    return filename_;
+  }
+
+protected:
+  ProjectPtr project_;
+
+  MainWindowLayoutInfo layout_info_;
+
+  QString project_saved_url_;
+
+private:
+  QString filename_;
+
+};
+
+OLIVE_NAMESPACE_EXIT
+
+#endif // LOADBASETASK_H