FontEditor: Add text box for editing the font name.

FontEditor/FontEditor.cpp

@@ -2,6 +2,7 @@
 #include <SharedGraphics/Painter.h>
 #include <LibGUI/GButton.h>
 #include <LibGUI/GLabel.h>
+#include <LibGUI/GTextBox.h>
 
 FontEditorWidget::FontEditorWidget(GWidget* parent)
     : GWidget(parent)
@@ -16,9 +17,16 @@ FontEditorWidget::FontEditorWidget(GWidget* parent)
     m_glyph_editor_widget = new GlyphEditorWidget(*m_edited_font, this);
     m_glyph_editor_widget->move_to({ 5, 5 });
 
+    m_name_textbox = new GTextBox(this);
+    m_name_textbox->set_relative_rect({ 5, 135, 140, 20 });
+    m_name_textbox->set_text(m_edited_font->name());
+    m_name_textbox->on_change = [this] (GTextBox&) {
+        m_edited_font->set_name(m_name_textbox->text());
+    };
+
     auto* save_button = new GButton(this);
     save_button->set_caption("Save");
-    save_button->set_relative_rect({ 5, 135, 140, 20 });
+    save_button->set_relative_rect({ 5, 170, 140, 20 });
     save_button->on_click = [this] (GButton&) {
         m_edited_font->write_to_file("/saved.font");
     };

FontEditor/FontEditor.h

@@ -5,6 +5,7 @@
 
 class GlyphEditorWidget;
 class GlyphMapWidget;
+class GTextBox;
 
 class FontEditorWidget final : public GWidget {
 public:
@@ -16,6 +17,7 @@ private:
 
     GlyphMapWidget* m_glyph_map_widget { nullptr };
     GlyphEditorWidget* m_glyph_editor_widget { nullptr };
+    GTextBox* m_name_textbox { nullptr };
 };
 
 class GlyphMapWidget final : public GWidget {

LibGUI/GTextBox.cpp

@@ -68,6 +68,8 @@ void GTextBox::handle_backspace()
     if (m_text.length() == 1) {
         m_text = String::empty();
         m_cursor_position = 0;
+        if (on_change)
+            on_change(*this);
         update();
         return;
     }
@@ -80,6 +82,8 @@ void GTextBox::handle_backspace()
 
     m_text = move(new_text);
     --m_cursor_position;
+    if (on_change)
+        on_change(*this);
     update();
 }
 
@@ -118,6 +122,8 @@ void GTextBox::keydown_event(GKeyEvent& event)
 
         m_text = move(new_text);
         ++m_cursor_position;
+        if (on_change)
+            on_change(*this);
         update();
         return;
     }

LibGUI/GTextBox.h

@@ -12,6 +12,7 @@ public:
     void set_text(String&&);
 
     Function<void(GTextBox&)> on_return_pressed;
+    Function<void(GTextBox&)> on_change;
 
 private:
     virtual const char* class_name() const override { return "GTextBox"; }

SharedGraphics/Font.h

@@ -26,6 +26,9 @@ public:
     byte glyph_width() const { return m_glyph_width; }
     byte glyph_height() const { return m_glyph_height; }
 
+    String name() const { return m_name; }
+    void set_name(const String& name) { m_name = name; }
+
     static void initialize();
 
 private: