From 880568cc604786d4cadfccbd70ca61f6efe093cb Mon Sep 17 00:00:00 2001
From: WerWolv <werwolv98@gmail.com>
Date: Fri, 17 Mar 2023 11:32:08 +0100
Subject: [PATCH] impr: Better find view result filter speeds

---
 .../include/content/views/view_find.hpp        |  2 +-
 .../builtin/source/content/views/view_find.cpp | 18 ++++++++++++++----
 2 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/plugins/builtin/include/content/views/view_find.hpp b/plugins/builtin/include/content/views/view_find.hpp
index e2ca92eae..f2fb4f033 100644
--- a/plugins/builtin/include/content/views/view_find.hpp
+++ b/plugins/builtin/include/content/views/view_find.hpp
@@ -96,7 +96,7 @@ namespace hex::plugin::builtin {
         std::map<prv::Provider*, OccurrenceTree> m_occurrenceTree;
         std::map<prv::Provider*, std::string> m_currFilter;
 
-        TaskHolder m_searchTask;
+        TaskHolder m_searchTask, m_filterTask;
         bool m_settingsValid = false;
 
     private:
diff --git a/plugins/builtin/source/content/views/view_find.cpp b/plugins/builtin/source/content/views/view_find.cpp
index af29bdb28..1151ac808 100644
--- a/plugins/builtin/source/content/views/view_find.cpp
+++ b/plugins/builtin/source/content/views/view_find.cpp
@@ -786,12 +786,22 @@ namespace hex::plugin::builtin {
             auto &currOccurrences = this->m_sortedOccurrences[provider];
 
             ImGui::PushItemWidth(ImGui::GetContentRegionAvail().x);
+            auto prevFilterLength = this->m_currFilter[provider].length();
             if (ImGui::InputTextWithHint("##filter", "hex.builtin.common.filter"_lang, this->m_currFilter[provider])) {
-                this->m_sortedOccurrences[provider] = this->m_foundOccurrences[provider];
+                if (prevFilterLength > this->m_currFilter[provider].length())
+                    this->m_sortedOccurrences[provider] = this->m_foundOccurrences[provider];
 
-                currOccurrences.erase(std::remove_if(currOccurrences.begin(), currOccurrences.end(), [this, provider](const auto &region) {
-                    return !hex::containsIgnoreCase(this->decodeValue(provider, region), this->m_currFilter[provider]);
-                }), currOccurrences.end());
+                if (this->m_filterTask.isRunning())
+                    this->m_filterTask.interrupt();
+
+                if (!this->m_currFilter[provider].empty()) {
+                    this->m_filterTask = TaskManager::createTask("Filtering", 0, [this, provider, &currOccurrences](Task &task) {
+                        currOccurrences.erase(std::remove_if(currOccurrences.begin(), currOccurrences.end(), [this, provider, &task](const auto &region) {
+                            task.update();
+                            return !hex::containsIgnoreCase(this->decodeValue(provider, region), this->m_currFilter[provider]);
+                        }), currOccurrences.end());
+                    });
+                }
             }
             ImGui::PopItemWidth();