1 files changed, 78 insertions, 0 deletions
diff --git a/Userland/Libraries/LibGUI/TextPosition.h b/Userland/Libraries/LibGUI/TextPosition.h
new file mode 100644
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+++ b/Userland/Libraries/LibGUI/TextPosition.h
@@ -0,0 +1,78 @@
+/*
+ * 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.
+ */
+
+#pragma once
+
+#include <AK/LogStream.h>
+#include <AK/String.h>
+
+namespace GUI {
+
+class TextPosition {
+public:
+    TextPosition() { }
+    TextPosition(size_t line, size_t column)
+        : m_line(line)
+        , m_column(column)
+    {
+    }
+
+    bool is_valid() const { return m_line != 0xffffffffu && m_column != 0xffffffffu; }
+
+    size_t line() const { return m_line; }
+    size_t column() const { return m_column; }
+
+    void set_line(size_t line) { m_line = line; }
+    void set_column(size_t column) { m_column = column; }
+
+    bool operator==(const TextPosition& other) const { return m_line == other.m_line && m_column == other.m_column; }
+    bool operator!=(const TextPosition& other) const { return m_line != other.m_line || m_column != other.m_column; }
+    bool operator<(const TextPosition& other) const { return m_line < other.m_line || (m_line == other.m_line && m_column < other.m_column); }
+
+private:
+    size_t m_line { 0xffffffff };
+    size_t m_column { 0xffffffff };
+};
+
+inline const LogStream& operator<<(const LogStream& stream, const TextPosition& value)
+{
+    if (!value.is_valid())
+        return stream << "GUI::TextPosition(Invalid)";
+    return stream << String::formatted("({},{})", value.line(), value.column());
+}
+
+}
+
+template<>
+struct AK::Formatter<GUI::TextPosition> : AK::Formatter<FormatString> {
+    void format(FormatBuilder& builder, const GUI::TextPosition& value)
+    {
+        if (value.is_valid())
+            Formatter<FormatString>::format(builder, "({},{})", value.line(), value.column());
+        else
+            Formatter<FormatString>::format(builder, "GUI::TextPosition(Invalid)");
+    }
+};