From 169beff21ef85e57da23fc870fd4e8b937e10ef3 Mon Sep 17 00:00:00 2001
From: AnotherTest <ali.mpfard@gmail.com>
Date: Mon, 30 Nov 2020 09:59:14 +0330
Subject: [PATCH] LibGUI: Add a ModelSelection::add_all(Vector) API

Using add() is very slow due to the change notifications.
---
 Libraries/LibGUI/ModelSelection.cpp | 12 ++++++++++++
 Libraries/LibGUI/ModelSelection.h   |  1 +
 2 files changed, 13 insertions(+)

diff --git a/Libraries/LibGUI/ModelSelection.cpp b/Libraries/LibGUI/ModelSelection.cpp
index 5b4d208883..2a22336855 100644
--- a/Libraries/LibGUI/ModelSelection.cpp
+++ b/Libraries/LibGUI/ModelSelection.cpp
@@ -64,6 +64,18 @@ void ModelSelection::add(const ModelIndex& index)
     notify_selection_changed();
 }
 
+void ModelSelection::add_all(const Vector<ModelIndex>& indices)
+{
+    {
+        TemporaryChange notify_change { m_disable_notify, true };
+        for (auto& index : indices)
+            add(index);
+    }
+
+    if (m_notify_pending)
+        notify_selection_changed();
+}
+
 void ModelSelection::toggle(const ModelIndex& index)
 {
     ASSERT(index.is_valid());
diff --git a/Libraries/LibGUI/ModelSelection.h b/Libraries/LibGUI/ModelSelection.h
index d40cea4a36..78e0585250 100644
--- a/Libraries/LibGUI/ModelSelection.h
+++ b/Libraries/LibGUI/ModelSelection.h
@@ -59,6 +59,7 @@ public:
 
     void set(const ModelIndex&);
     void add(const ModelIndex&);
+    void add_all(const Vector<ModelIndex>&);
     void toggle(const ModelIndex&);
     bool remove(const ModelIndex&);
     void clear();