LibGUI: Move code to display emoji buttons to a helper function

For a search box to be added, this code will need to be re-invoked as
the search query updates.

Userland/Libraries/LibGUI/EmojiInputDialog.cpp

@@ -52,23 +52,31 @@ EmojiInputDialog::EmojiInputDialog(Window* parent_window)
     resize(400, 300);
 
     auto& scrollable_container = *main_widget.find_descendant_of_type_named<GUI::ScrollableContainerWidget>("scrollable_container"sv);
-    auto& emojis_widget = *main_widget.find_descendant_of_type_named<GUI::Widget>("emojis"sv);
-    auto code_points = supported_emoji_code_points();
+    m_emojis_widget = main_widget.find_descendant_of_type_named<GUI::Widget>("emojis"sv);
+    m_code_points = supported_emoji_code_points();
 
-    size_t index = 0;
-    size_t columns = 18;
-    size_t rows = ceil_div(code_points.size(), columns);
+    scrollable_container.horizontal_scrollbar().set_visible(false);
+    update_displayed_emoji();
 
-    constexpr int button_size = 20;
+    on_active_window_change = [this](bool is_active_window) {
+        if (!is_active_window)
+            close();
+    };
+}
 
-    scrollable_container.horizontal_scrollbar().set_visible(false);
+void EmojiInputDialog::update_displayed_emoji()
+{
+    constexpr int button_size = 20;
+    constexpr size_t columns = 18;
+    size_t rows = ceil_div(m_code_points.size(), columns);
+    size_t index = 0;
 
-    for (size_t row = 0; row < rows && index < code_points.size(); ++row) {
-        auto& horizontal_container = emojis_widget.add<Widget>();
+    for (size_t row = 0; row < rows && index < m_code_points.size(); ++row) {
+        auto& horizontal_container = m_emojis_widget->add<Widget>();
         auto& horizontal_layout = horizontal_container.set_layout<HorizontalBoxLayout>();
         horizontal_layout.set_spacing(0);
         for (size_t column = 0; column < columns; ++column) {
-            if (index < code_points.size()) {
+            if (index < m_code_points.size()) {
                 // FIXME: Also emit U+FE0F for single code point emojis, currently
                 // they get shown as text glyphs if available.
                 // This will require buttons to don't calculate their length as 2,
@@ -76,7 +84,7 @@ EmojiInputDialog::EmojiInputDialog(Window* parent_window)
                 // tweaking of the mechanism that is currently being used to insert
                 // which is a key event with a single code point.
                 StringBuilder builder;
-                builder.append(Utf32View(&code_points[index++], 1));
+                builder.append(Utf32View(&m_code_points[index++], 1));
                 auto emoji_text = builder.to_string();
                 auto& button = horizontal_container.add<Button>(emoji_text);
                 button.set_fixed_size(button_size, button_size);
@@ -90,11 +98,6 @@ EmojiInputDialog::EmojiInputDialog(Window* parent_window)
             }
         }
     }
-
-    on_active_window_change = [this](bool is_active_window) {
-        if (!is_active_window)
-            close();
-    };
 }
 
 void EmojiInputDialog::event(Core::Event& event)

Userland/Libraries/LibGUI/EmojiInputDialog.h

@@ -20,6 +20,10 @@ private:
     virtual void event(Core::Event&) override;
     explicit EmojiInputDialog(Window* parent_window);
 
+    void update_displayed_emoji();
+
+    RefPtr<Widget> m_emojis_widget;
+    Vector<u32> m_code_points;
     String m_selected_emoji_text;
 };