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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26#pragma once
27
28#include <AK/URL.h>
29#include <LibGUI/ScrollableWidget.h>
30#include <LibWeb/DOM/Document.h>
31
32namespace Web {
33
34class Frame;
35
36class HtmlView : public GUI::ScrollableWidget {
37 C_OBJECT(HtmlView)
38public:
39 virtual ~HtmlView() override;
40
41 Document* document();
42 const Document* document() const;
43 void set_document(Document*);
44
45 const LayoutDocument* layout_root() const;
46 LayoutDocument* layout_root();
47
48 Web::Frame& main_frame() { return *m_main_frame; }
49 const Web::Frame& main_frame() const { return *m_main_frame; }
50
51 void reload();
52 void load(const URL&);
53 void load_error_page(const URL&, const String& error);
54 void scroll_to_anchor(const StringView&);
55
56 URL url() const;
57
58 void set_should_show_line_box_borders(bool value) { m_should_show_line_box_borders = value; }
59
60 Function<void(const String&)> on_link_click;
61 Function<void(const String&)> on_link_hover;
62 Function<void(const String&)> on_title_change;
63 Function<void(const URL&)> on_load_start;
64
65 virtual bool accepts_focus() const override { return true; }
66
67protected:
68 HtmlView();
69
70 virtual void resize_event(GUI::ResizeEvent&) override;
71 virtual void paint_event(GUI::PaintEvent&) override;
72 virtual void mousemove_event(GUI::MouseEvent&) override;
73 virtual void mousedown_event(GUI::MouseEvent&) override;
74 virtual void mouseup_event(GUI::MouseEvent&) override;
75 virtual void keydown_event(GUI::KeyEvent&) override;
76
77private:
78 virtual void did_scroll() override;
79
80 void run_javascript_url(const String& url);
81 void layout_and_sync_size();
82 void dump_selection(const char* event_name);
83 Gfx::Point compute_mouse_event_offset(const Gfx::Point&, const LayoutNode&) const;
84
85 RefPtr<Web::Frame> m_main_frame;
86
87 bool m_should_show_line_box_borders { false };
88 bool m_in_mouse_selection { false };
89};
90
91}