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LibWeb: Move text selection serialization from PageView to Frame

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This logic doesn't depend on anything at the widget layer, so it can
move down to the frame layer.
This commit is contained in:
Andreas Kling 2020-08-06 19:21:59 +02:00
parent 90efba95c1
commit 1c7faa8965
3 changed files with 54 additions and 42 deletions
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51
Libraries/LibWeb/Page/Frame.cpp
View file

@ -26,7 +26,9 @@
#include <LibWeb/DOM/Document.h>
#include <LibWeb/HTML/HTMLAnchorElement.h>
#include <LibWeb/Layout/LayoutBreak.h>
#include <LibWeb/Layout/LayoutDocument.h>
#include <LibWeb/Layout/LayoutText.h>
#include <LibWeb/Layout/LayoutWidget.h>
#include <LibWeb/Page/Frame.h>
#include <LibWeb/PageView.h>
@ -180,7 +182,7 @@ Gfx::IntPoint Frame::to_main_frame_position(const Gfx::IntPoint& a_position)
return position;
}
void Frame::set_cursor_position(const DOM::Position & position)
void Frame::set_cursor_position(const DOM::Position& position)
{
if (m_cursor_position == position)
return;
@ -196,4 +198,51 @@ void Frame::set_cursor_position(const DOM::Position & position)
dbg() << "Cursor position: " << m_cursor_position;
}
String Frame::selected_text() const
{
StringBuilder builder;
if (!m_document)
return {};
auto* layout_root = m_document->layout_node();
if (!layout_root)
return {};
if (!layout_root->selection().is_valid())
return {};
auto selection = layout_root->selection().normalized();
if (selection.start().layout_node == selection.end().layout_node) {
if (!is<LayoutText>(*selection.start().layout_node))
return "";
return downcast<LayoutText>(*selection.start().layout_node).text_for_rendering().substring(selection.start().index_in_node, selection.end().index_in_node - selection.start().index_in_node + 1);
}
// Start node
auto layout_node = selection.start().layout_node;
if (is<LayoutText>(*layout_node)) {
auto& text = downcast<LayoutText>(*layout_node).text_for_rendering();
builder.append(text.substring(selection.start().index_in_node, text.length() - selection.start().index_in_node));
}
// Middle nodes
layout_node = layout_node->next_in_pre_order();
while (layout_node && layout_node != selection.end().layout_node) {
if (is<LayoutText>(*layout_node))
builder.append(downcast<LayoutText>(*layout_node).text_for_rendering());
else if (is<LayoutBreak>(*layout_node) || is<LayoutBlock>(*layout_node))
builder.append('\n');
layout_node = layout_node->next_in_pre_order();
}
// End node
ASSERT(layout_node == selection.end().layout_node);
if (is<LayoutText>(*layout_node)) {
auto& text = downcast<LayoutText>(*layout_node).text_for_rendering();
builder.append(text.substring(0, selection.end().index_in_node + 1));
}
return builder.to_string();
}
}