From a71c7c728f50d7f923b4492db2c1178c6aaeee53 Mon Sep 17 00:00:00 2001
From: codereader <greebo@angua.at>
Date: Sun, 8 Aug 2021 16:31:06 +0200
Subject: [PATCH] #5697: Implement the copy filter functionality

---
 radiant/ui/filters/editor/FilterDialog.cpp | 84 ++++++++++++----------
 radiant/ui/filters/editor/FilterDialog.h   |  2 +
 2 files changed, 49 insertions(+), 37 deletions(-)

diff --git a/radiant/ui/filters/editor/FilterDialog.cpp b/radiant/ui/filters/editor/FilterDialog.cpp
index fd0931324a..9630c530ba 100644
--- a/radiant/ui/filters/editor/FilterDialog.cpp
+++ b/radiant/ui/filters/editor/FilterDialog.cpp
@@ -249,50 +249,53 @@ void FilterDialog::onSave(wxCommandEvent& ev)
 	EndModal(wxID_OK);
 }
 
-void FilterDialog::onAddFilter(wxCommandEvent& ev)
+void FilterDialog::showEditDialogForNewFilter(const FilterPtr& newFilter)
 {
-	// Construct a new filter with an empty name (this indicates it has not been there before when saving)
-	FilterPtr workingCopy(new Filter("", false, false));
-	workingCopy->name = _("NewFilter");
+    // Instantiate a new editor, will block
+    auto* editor = new FilterEditor(*newFilter, this, false);
 
-	// Instantiate a new editor, will block
-	FilterEditor* editor = new FilterEditor(*workingCopy, this, false);
+    auto editorResult = editor->ShowModal();
 
-	int editorResult = editor->ShowModal();
-	
-	editor->Destroy();
+    editor->Destroy();
 
-	if (editorResult != wxID_OK)
-	{
-		// User hit cancel, we're done
-		return;
-	}
+    if (editorResult != wxID_OK)
+    {
+        // User hit cancel, we're done
+        return;
+    }
 
-	if (workingCopy->rules.empty())
-	{
-		// Empty ruleset, notify user
-		IDialogPtr dialog = GlobalDialogManager().createMessageBox(_("Empty Filter"),
-			_("No rules defined for this filter, cannot insert."), ui::IDialog::MESSAGE_ERROR);
+    if (newFilter->rules.empty())
+    {
+        // Empty ruleset, notify user
+        auto dialog = GlobalDialogManager().createMessageBox(_("Empty Filter"),
+            _("No rules defined for this filter, cannot insert."), ui::IDialog::MESSAGE_ERROR);
 
-		dialog->run();
-		return;
-	}
+        dialog->run();
+        return;
+    }
 
-	std::pair<FilterMap::iterator, bool> result = _filters.insert(
-		FilterMap::value_type(workingCopy->name, workingCopy)
-	);
+    auto result = _filters.emplace(newFilter->name, newFilter);
 
-	if (!result.second)
-	{
-		// Empty ruleset, notify user
-		IDialogPtr dialog = GlobalDialogManager().createMessageBox(_("Name Conflict"),
-			_("Cannot add, filter with same name already exists."), ui::IDialog::MESSAGE_ERROR);
+    if (!result.second)
+    {
+        // Empty ruleset, notify user
+        auto dialog = GlobalDialogManager().createMessageBox(_("Name Conflict"),
+            _("Cannot add, filter with same name already exists."), ui::IDialog::MESSAGE_ERROR);
 
-		dialog->run();
-		return;
-	}
+        dialog->run();
+        return;
+    }
 
-	update();
+    update();
+}
+
+void FilterDialog::onAddFilter(wxCommandEvent& ev)
+{
+	// Construct a new filter with an empty name (this indicates it has not been there before when saving)
+	auto newFilter = std::make_shared<Filter>("", false, false);
+    newFilter->name = _("NewFilter");
+
+    showEditDialogForNewFilter(newFilter);
 }
 
 void FilterDialog::onViewFilter(wxCommandEvent& ev)
@@ -403,10 +406,17 @@ void FilterDialog::onCopyFilter(wxCommandEvent& ev)
         return; // not found or read-only
     }
 
-    // TODO: Copy
+    // Construct a new filter with an empty name (this indicates it has not been there before when saving)
+    auto newFilter = std::make_shared<Filter>("", false, false);
+    newFilter->name = f->second->name + " " + _("Copy");
 
-    // Update all widgets
-    update();
+    // Copy all the rules
+    for (const auto& existingRule : f->second->rules)
+    {
+        newFilter->rules.push_back(existingRule);
+    }
+
+    showEditDialogForNewFilter(newFilter);
 }
 
 void FilterDialog::onFilterSelectionChanged(wxDataViewEvent& ev)
diff --git a/radiant/ui/filters/editor/FilterDialog.h b/radiant/ui/filters/editor/FilterDialog.h
index 22a8b8d717..10a46d3e5c 100644
--- a/radiant/ui/filters/editor/FilterDialog.h
+++ b/radiant/ui/filters/editor/FilterDialog.h
@@ -88,6 +88,8 @@ class FilterDialog :
 	void onDeleteFilter(wxCommandEvent& ev);
 	void onCopyFilter(wxCommandEvent& ev);
 
+    void showEditDialogForNewFilter(const FilterPtr& filter);
+
 	void onFilterSelectionChanged(wxDataViewEvent& ev);
 };