LibWeb: Move editing stuff into EditEventHandler.

1 files changed, 71 insertions, 0 deletions

diff --git a/Libraries/LibWeb/Page/EditEventHandler.cpp b/Libraries/LibWeb/Page/EditEventHandler.cpp
new file mode 100644
index 0000000000..e823892788
--- /dev/null
+++ b/Libraries/LibWeb/Page/EditEventHandler.cpp
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2020, the SerenityOS developers.
+ * 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 <AK/StringBuilder.h>
+#include <LibWeb/DOM/Position.h>
+#include <LibWeb/DOM/Text.h>
+#include <LibWeb/Layout/LayoutPosition.h>
+#include <LibWeb/Page/Frame.h>
+
+#include "EditEventHandler.h"
+
+namespace Web {
+
+void EditEventHandler::handle_delete(DOM::Position position)
+{
+    if (position.offset() == 0)
+        TODO();
+
+    if (is<DOM::Text>(*position.node())) {
+        auto& node = downcast<DOM::Text>(*position.node());
+        StringBuilder builder;
+        builder.append(node.data().substring_view(0, position.offset() - 1));
+        builder.append(node.data().substring_view(position.offset()));
+        node.set_data(builder.to_string());
+
+        m_frame.cursor_position().set_offset(m_frame.cursor_position().offset() - 1);
+        node.invalidate_style();
+    }
+}
+
+void EditEventHandler::handle_insert(DOM::Position position, u32 code_point)
+{
+    // FIXME: Unicode fiasco.
+
+    if (is<DOM::Text>(*position.node())) {
+        auto& node = downcast<DOM::Text>(*position.node());
+        StringBuilder builder;
+        builder.append(node.data().substring_view(0, position.offset()));
+        builder.append_code_point(code_point);
+        builder.append(node.data().substring_view(position.offset()));
+        node.set_data(builder.to_string());
+
+        m_frame.cursor_position().set_offset(m_frame.cursor_position().offset() + 1);
+        node.invalidate_style();
+    }
+}
+
+}