project: implemented the ability to delete items from projects

app/panel/project/project.cpp

@@ -133,6 +133,11 @@ void ProjectPanel::Overwrite()
   }
 }
 
+void ProjectPanel::DeleteSelected()
+{
+  explorer_->DeleteSelected();
+}
+
 void ProjectPanel::Edit(Item* item)
 {
   explorer_->Edit(item);

app/panel/project/project.h

@@ -52,6 +52,8 @@ public:
   virtual void Insert() override;
   virtual void Overwrite() override;
 
+  virtual void DeleteSelected() override;
+
 public slots:
   void Edit(Item *item);
 

app/project/projectviewmodel.cpp

@@ -475,7 +475,7 @@ void ProjectViewModel::MoveItemInternal(Item *item, Item *destination)
 
   beginMoveRows(item_index.parent(), item_index.row(), item_index.row(), destination_index, destination->child_count());
 
-  ItemPtr item_ptr = item->parent()->shared_ptr_from_raw(item);
+  ItemPtr item_ptr = item->get_shared_ptr();
 
   destination->add_child(item_ptr);
 
@@ -541,10 +541,6 @@ ProjectViewModel::AddItemCommand::AddItemCommand(ProjectViewModel* model, Item*
 {
 }
 
-ProjectViewModel::AddItemCommand::~AddItemCommand()
-{
-}
-
 void ProjectViewModel::AddItemCommand::redo_internal()
 {
   model_->AddChild(parent_, child_);
@@ -558,3 +554,21 @@ void ProjectViewModel::AddItemCommand::undo_internal()
 
   done_ = false;
 }
+
+ProjectViewModel::RemoveItemCommand::RemoveItemCommand(ProjectViewModel *model, ItemPtr item, QUndoCommand *parent) :
+  UndoCommand(parent),
+  model_(model),
+  item_(item)
+{
+}
+
+void ProjectViewModel::RemoveItemCommand::redo_internal()
+{
+  parent_ = item_->parent();
+  model_->RemoveChild(parent_, item_.get());
+}
+
+void ProjectViewModel::RemoveItemCommand::undo_internal()
+{
+  model_->AddChild(parent_, item_);
+}

app/project/projectviewmodel.h

@@ -151,8 +151,6 @@ public:
   public:
     AddItemCommand(ProjectViewModel* model, Item* folder, ItemPtr child, QUndoCommand* parent = nullptr);
 
-    virtual ~AddItemCommand() override;
-
   protected:
     virtual void redo_internal() override;
 
@@ -164,6 +162,28 @@ public:
     ItemPtr child_;
     bool done_;
   };
+
+  /**
+   * @brief An undo command for removing an item
+   */
+  class RemoveItemCommand : public UndoCommand {
+  public:
+    RemoveItemCommand(ProjectViewModel* model, ItemPtr item, QUndoCommand* parent = nullptr);
+
+  protected:
+    virtual void redo_internal() override;
+
+    virtual void undo_internal() override;
+
+  private:
+    ProjectViewModel* model_;
+
+    ItemPtr item_;
+
+    Item* parent_;
+
+  };
+
 private:
   /**
    * @brief Retrieve the index of `item` in its parent

app/widget/projectexplorer/projectexplorer.cpp

@@ -406,3 +406,22 @@ void ProjectExplorer::DeselectAll()
 {
   CurrentView()->selectionModel()->clearSelection();
 }
+
+void ProjectExplorer::DeleteSelected()
+{
+  QList<Item*> selected = SelectedItems();
+
+  if (selected.isEmpty()) {
+    return;
+  }
+
+  QUndoCommand* command = new QUndoCommand();
+
+  foreach (Item* item, selected) {
+    ItemPtr item_ptr = item->get_shared_ptr();
+
+    new ProjectViewModel::RemoveItemCommand(&model_, item_ptr, command);
+  }
+
+  Core::instance()->undo_stack()->pushIfHasChildren(command);
+}

app/widget/projectexplorer/projectexplorer.h

@@ -77,6 +77,8 @@ public:
 
   void DeselectAll();
 
+  void DeleteSelected();
+
 public slots:
   void set_view_type(ProjectToolbar::ViewType type);