1 files changed, 95 insertions, 0 deletions
diff --git a/Userland/Libraries/LibGUI/TextBox.cpp b/Userland/Libraries/LibGUI/TextBox.cpp
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+++ b/Userland/Libraries/LibGUI/TextBox.cpp
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+/*
+ * 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/TextBox.h>
+
+REGISTER_WIDGET(GUI, TextBox)
+
+namespace GUI {
+
+TextBox::TextBox()
+    : TextEditor(TextEditor::SingleLine)
+{
+    set_min_width(32);
+    set_fixed_height(22);
+}
+
+TextBox::~TextBox()
+{
+}
+
+void TextBox::keydown_event(GUI::KeyEvent& event)
+{
+    TextEditor::keydown_event(event);
+
+    if (event.key() == Key_Up) {
+        if (on_up_pressed)
+            on_up_pressed();
+
+        if (has_no_history() || !can_go_backwards_in_history())
+            return;
+
+        if (m_history_index >= static_cast<int>(m_history.size()))
+            m_saved_input = text();
+
+        m_history_index--;
+        set_text(m_history[m_history_index]);
+    } else if (event.key() == Key_Down) {
+        if (on_down_pressed)
+            on_down_pressed();
+
+        if (has_no_history())
+            return;
+
+        if (can_go_forwards_in_history()) {
+            m_history_index++;
+            set_text(m_history[m_history_index]);
+        } else if (m_history_index < static_cast<int>(m_history.size())) {
+            m_history_index++;
+            set_text(m_saved_input);
+        }
+    }
+}
+
+void TextBox::add_current_text_to_history()
+{
+    if (!m_history_enabled)
+        return;
+
+    auto input = text();
+    if (m_history.is_empty() || m_history.last() != input)
+        add_input_to_history(input);
+    m_history_index = static_cast<int>(m_history.size());
+    m_saved_input = {};
+}
+
+void TextBox::add_input_to_history(String input)
+{
+    m_history.append(move(input));
+    m_history_index++;
+}
+
+}