Everywhere: It's now "Foobar", not "FooBar", and not "foo bar"

I hereby declare these to be full nouns that we don't split,
neither by space, nor by underscore:

- Breadcrumbbar
- Coolbar
- Menubar
- Progressbar
- Scrollbar
- Statusbar
- Taskbar
- Toolbar

This patch makes everything consistent by replacing every other variant
of these with the proper one. :^)

Userland/Libraries/LibGUI/Statusbar.cpp

@@ -0,0 +1,107 @@
+/*
+ * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <LibGUI/BoxLayout.h>
+#include <LibGUI/Label.h>
+#include <LibGUI/Painter.h>
+#include <LibGUI/ResizeCorner.h>
+#include <LibGUI/Statusbar.h>
+#include <LibGUI/Window.h>
+#include <LibGfx/Palette.h>
+#include <LibGfx/StylePainter.h>
+
+REGISTER_WIDGET(GUI, Statusbar)
+
+namespace GUI {
+
+Statusbar::Statusbar(int label_count)
+{
+    set_fixed_height(18);
+    set_layout<HorizontalBoxLayout>();
+    layout()->set_margins({ 0, 0, 0, 0 });
+    layout()->set_spacing(2);
+
+    if (label_count < 1)
+        label_count = 1;
+
+    for (auto i = 0; i < label_count; i++)
+        m_labels.append(create_label());
+
+    m_corner = add<ResizeCorner>();
+
+    REGISTER_STRING_PROPERTY("text", text, set_text);
+}
+
+Statusbar::~Statusbar()
+{
+}
+
+NonnullRefPtr<Label> Statusbar::create_label()
+{
+    auto& label = add<Label>();
+    label.set_frame_shadow(Gfx::FrameShadow::Sunken);
+    label.set_frame_shape(Gfx::FrameShape::Panel);
+    label.set_frame_thickness(1);
+    label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
+    return label;
+}
+
+void Statusbar::set_text(const StringView& text)
+{
+    m_labels.first().set_text(text);
+}
+
+String Statusbar::text() const
+{
+    return m_labels.first().text();
+}
+
+void Statusbar::set_text(int index, const StringView& text)
+{
+    m_labels.at(index).set_text(text);
+}
+
+String Statusbar::text(int index) const
+{
+    return m_labels.at(index).text();
+}
+
+void Statusbar::paint_event(PaintEvent& event)
+{
+    Painter painter(*this);
+    painter.add_clip_rect(event.rect());
+    painter.fill_rect(rect(), palette().button());
+}
+
+void Statusbar::resize_event(ResizeEvent& event)
+{
+    if (window())
+        m_corner->set_visible(window()->is_maximized() ? false : true);
+
+    Widget::resize_event(event);
+}
+
+}