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LibWeb: Move editing stuff into EditEventHandler.

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asynts 2020-12-01 23:35:47 +01:00 committed by Andreas Kling
parent 82aac98bea
commit bbcc5a9332
Notes: sideshowbarker 2024-07-19 00:57:24 +09:00 
Author: https://github.com/asynts
Commit: https://github.com/SerenityOS/serenity/commit/bbcc5a93321
Pull-request: https://github.com/SerenityOS/serenity/pull/4318
Reviewed-by: https://github.com/Lubrsi
Reviewed-by: https://github.com/awesomekling
Reviewed-by: https://github.com/linusg
11 changed files with 161 additions and 22 deletions
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8
Base/res/html/misc/contenteditable.html Normal file
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@ -0,0 +1,8 @@
<html contenteditable>
<body>
<h1>Everything on this page should be editable.</h1>
<p>Here is a paragraph to play with.</p>
<p>Another paragraph with a <b>bold</b> element embeded in it.</p>
</body>
</html>

1
Base/res/html/misc/welcome.html
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@ -38,6 +38,7 @@ span#loadtime {
<p>This page loaded in <b><span id="loadtime"></span></b> ms</p>
<p>Some small test pages:</p>
<ul>
<li><a href="contenteditable.html">contenteditable</a></li>
<li><a href="clear-1.html">clearing floats</a></li>
<li><a href="float-1.html">floating boxes</a></li>
<li><a href="padding-inline.html">inline elements with padding</a></li>

1
Libraries/LibWeb/CMakeLists.txt
View file

@ -178,6 +178,7 @@ set(SOURCES
Namespace.cpp
OutOfProcessWebView.cpp
Page/EventHandler.cpp
Page/EditEventHandler.cpp
Page/Frame.cpp
Page/Page.cpp
Painting/BorderPainting.cpp

2
Libraries/LibWeb/DOM/Position.h
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@ -27,6 +27,7 @@
#pragma once
#include <AK/RefPtr.h>
#include <LibWeb/DOM/Node.h>
#include <LibWeb/Forward.h>
namespace Web::DOM {
@ -44,6 +45,7 @@ public:
const Node* node() const { return m_node; }
unsigned offset() const { return m_offset; }
void set_offset(unsigned value) { m_offset = value; }
bool operator==(const Position& other) const
{

1
Libraries/LibWeb/Forward.h
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@ -167,6 +167,7 @@ class ReplacedBox;
namespace Web {
class EventHandler;
class EditEventHandler;
class Frame;
class FrameLoader;
class InProcessWebView;

10
Libraries/LibWeb/Layout/LayoutPosition.cpp
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@ -24,11 +24,21 @@
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <LibWeb/DOM/Position.h>
#include <LibWeb/Layout/LayoutPosition.h>
#include <LibWeb/Layout/Node.h>
namespace Web::Layout {
DOM::Position LayoutPosition::to_dom_position() const
{
if (!layout_node)
return {};
// FIXME: Verify that there are no shenanigans going on.
return { const_cast<DOM::Node&>(*layout_node->dom_node()), (unsigned)index_in_node };
}
LayoutRange LayoutRange::normalized() const
{
if (!is_valid())

6
Libraries/LibWeb/Layout/LayoutPosition.h
View file

@ -27,6 +27,8 @@
#pragma once
#include <AK/RefPtr.h>
#include <LibWeb/Forward.h>
#include <LibWeb/Layout/Node.h>
namespace Web::Layout {
@ -35,6 +37,8 @@ class Node;
struct LayoutPosition {
RefPtr<Node> layout_node;
int index_in_node { 0 };
DOM::Position to_dom_position() const;
};
class LayoutRange {
@ -58,7 +62,9 @@ public:
void set_end(const LayoutPosition& end) { m_end = end; }
const LayoutPosition& start() const { return m_start; }
LayoutPosition& start() { return m_start; }
const LayoutPosition& end() const { return m_end; }
LayoutPosition& end() { return m_end; }
LayoutRange normalized() const;

71
Libraries/LibWeb/Page/EditEventHandler.cpp Normal file
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@ -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();
}
}
}

49
Libraries/LibWeb/Page/EditEventHandler.h Normal file
View file

@ -0,0 +1,49 @@
/*
* 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.
*/
#pragma once
#include <LibWeb/Forward.h>
namespace Web {
class EditEventHandler {
public:
explicit EditEventHandler(Frame& frame)
: m_frame(frame)
{
}
virtual ~EditEventHandler() = default;
virtual void handle_delete(DOM::Position);
virtual void handle_insert(DOM::Position, u32 code_point);
private:
Frame& m_frame;
};
}

29
Libraries/LibWeb/Page/EventHandler.cpp
View file

@ -52,6 +52,7 @@ static Gfx::IntPoint compute_mouse_event_offset(const Gfx::IntPoint& position, c
EventHandler::EventHandler(Badge<Frame>, Frame& frame)
: m_frame(frame)
, m_edit_event_handler(make<EditEventHandler>(frame))
{
}
@ -344,34 +345,18 @@ bool EventHandler::handle_keydown(KeyCode key, unsigned modifiers, u32 code_poin
return focus_next_element();
}
if (m_frame.cursor_position().node() && m_frame.cursor_position().node()->is_editable()) {
// FIXME: Support backspacing across DOM node boundaries.
if (key == KeyCode::Key_Backspace && m_frame.cursor_position().offset() > 0) {
auto& text_node = downcast<DOM::Text>(*m_frame.cursor_position().node());
StringBuilder builder;
builder.append(text_node.data().substring_view(0, m_frame.cursor_position().offset() - 1));
builder.append(text_node.data().substring_view(m_frame.cursor_position().offset(), text_node.data().length() - m_frame.cursor_position().offset()));
text_node.set_data(builder.to_string());
m_frame.set_cursor_position({ *m_frame.cursor_position().node(), m_frame.cursor_position().offset() - 1 });
// FIXME: This should definitely use incremental layout invalidation instead!
text_node.document().force_layout();
if (m_frame.cursor_position().is_valid() && m_frame.cursor_position().node()->is_editable()) {
if (key == KeyCode::Key_Backspace) {
m_edit_event_handler->handle_delete(m_frame.cursor_position());
return true;
}
if (code_point && m_frame.cursor_position().is_valid() && is<DOM::Text>(*m_frame.cursor_position().node())) {
auto& text_node = downcast<DOM::Text>(*m_frame.cursor_position().node());
StringBuilder builder;
builder.append(text_node.data().substring_view(0, m_frame.cursor_position().offset()));
builder.append_code_point(code_point);
builder.append(text_node.data().substring_view(m_frame.cursor_position().offset(), text_node.data().length() - m_frame.cursor_position().offset()));
text_node.set_data(builder.to_string());
// FIXME: This will advance the cursor incorrectly when inserting multiple whitespaces (DOM vs layout whitespace collapse difference.)
m_frame.set_cursor_position({ *m_frame.cursor_position().node(), m_frame.cursor_position().offset() + 1 });
// FIXME: This should definitely use incremental layout invalidation instead!
text_node.document().force_layout();
if (code_point) {
m_edit_event_handler->handle_insert(m_frame.cursor_position(), code_point);
return true;
}
}
return false;
}

5
Libraries/LibWeb/Page/EventHandler.h
View file

@ -32,6 +32,7 @@
#include <LibGUI/Forward.h>
#include <LibGfx/Forward.h>
#include <LibWeb/Forward.h>
#include <LibWeb/Page/EditEventHandler.h>
namespace Web {
@ -50,6 +51,8 @@ public:
void set_mouse_event_tracking_layout_node(Layout::Node*);
void set_edit_event_handler(NonnullOwnPtr<EditEventHandler> value) { m_edit_event_handler = move(value); }
private:
bool focus_next_element();
bool focus_previous_element();
@ -64,6 +67,8 @@ private:
bool m_in_mouse_selection { false };
WeakPtr<Layout::Node> m_mouse_event_tracking_layout_node;
NonnullOwnPtr<EditEventHandler> m_edit_event_handler;
};
}