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serenity/Applications/Browser/Tab.cpp
FalseHonesty 391237a8e1 Browser: Add JS Console 
The JavaScript console can be opened with Control+I, or using
the menu option. The console is currently a text box with JS
syntax highlighting which will send commands to the document's
interpreter. All output is printed to an HTML view in the console.
The output is an HtmlView to easily allow complex output, such
as expandable views for JS Objects in the long run.
2020-05-24 02:20:08 +02:00

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/*
* Copyright (c) 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.
*/
#include "Tab.h"
#include "BookmarksBarWidget.h"
#include "ConsoleWidget.h"
#include "DownloadWidget.h"
#include "InspectorWidget.h"
#include "WindowActions.h"
#include <AK/StringBuilder.h>
#include <LibGUI/Action.h>
#include <LibGUI/Application.h>
#include <LibGUI/BoxLayout.h>
#include <LibGUI/Button.h>
#include <LibGUI/Clipboard.h>
#include <LibGUI/Menu.h>
#include <LibGUI/MenuBar.h>
#include <LibGUI/StatusBar.h>
#include <LibGUI/TabWidget.h>
#include <LibGUI/TextBox.h>
#include <LibGUI/ToolBar.h>
#include <LibGUI/ToolBarContainer.h>
#include <LibGUI/Window.h>
#include <LibJS/Interpreter.h>
#include <LibWeb/DOM/Element.h>
#include <LibWeb/DOMTreeModel.h>
#include <LibWeb/Dump.h>
#include <LibWeb/Frame.h>
#include <LibWeb/HtmlView.h>
#include <LibWeb/Layout/LayoutBlock.h>
#include <LibWeb/Layout/LayoutDocument.h>
#include <LibWeb/Layout/LayoutInline.h>
#include <LibWeb/Layout/LayoutNode.h>
#include <LibWeb/Parser/CSSParser.h>
#include <LibWeb/ResourceLoader.h>
namespace Browser {
extern String g_home_url;
Tab::Tab()
{
auto& widget = *this;
set_layout<GUI::VerticalBoxLayout>();
m_toolbar_container = widget.add<GUI::ToolBarContainer>();
auto& toolbar = m_toolbar_container->add<GUI::ToolBar>();
m_html_widget = widget.add<Web::HtmlView>();
m_go_back_action = GUI::CommonActions::make_go_back_action([this](auto&) {
m_history.go_back();
update_actions();
TemporaryChange<bool> change(m_should_push_loads_to_history, false);
m_html_widget->load(m_history.current());
}, this);
m_go_forward_action = GUI::CommonActions::make_go_forward_action([this](auto&) {
m_history.go_forward();
update_actions();
TemporaryChange<bool> change(m_should_push_loads_to_history, false);
m_html_widget->load(m_history.current());
}, this);
toolbar.add_action(*m_go_back_action);
toolbar.add_action(*m_go_forward_action);
toolbar.add_action(GUI::CommonActions::make_go_home_action([this](auto&) {
m_html_widget->load(g_home_url);
}, this));
m_reload_action = GUI::CommonActions::make_reload_action([this](auto&) {
TemporaryChange<bool> change(m_should_push_loads_to_history, false);
m_html_widget->reload();
}, this);
toolbar.add_action(*m_reload_action);
m_location_box = toolbar.add<GUI::TextBox>();
m_location_box->set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fixed);
m_location_box->set_preferred_size(0, 22);
m_location_box->on_return_pressed = [this] {
String location = m_location_box->text();
if (!URL(location).is_valid()) {
StringBuilder builder;
builder.append("http://");
builder.append(location);
location = builder.build();
}
m_html_widget->load(location);
m_location_box->set_focus(false);
};
m_location_box->add_custom_context_menu_action(GUI::Action::create("Paste & Go", [this](auto&) {
m_location_box->set_text(GUI::Clipboard::the().data());
m_location_box->on_return_pressed();
}));
m_bookmark_button = toolbar.add<GUI::Button>();
m_bookmark_button->set_button_style(Gfx::ButtonStyle::CoolBar);
m_bookmark_button->set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/star-black.png"));
m_bookmark_button->set_size_policy(GUI::SizePolicy::Fixed, GUI::SizePolicy::Fixed);
m_bookmark_button->set_preferred_size(22, 22);
m_bookmark_button->on_click = [this](auto) {
auto url = m_html_widget->main_frame().document()->url().to_string();
if (BookmarksBarWidget::the().contains_bookmark(url)) {
BookmarksBarWidget::the().remove_bookmark(url);
} else {
BookmarksBarWidget::the().add_bookmark(url, m_title);
}
update_bookmark_button(url);
};
m_html_widget->on_load_start = [this](auto& url) {
m_location_box->set_text(url.to_string());
if (m_should_push_loads_to_history)
m_history.push(url);
update_actions();
update_bookmark_button(url.to_string());
};
m_html_widget->on_link_click = [this](auto& href, auto& target, unsigned modifiers) {
if (target == "_blank" || modifiers == Mod_Ctrl) {
auto url = m_html_widget->document()->complete_url(href);
on_tab_open_request(url);
} else {
if (href.starts_with("#")) {
auto anchor = href.substring_view(1, href.length() - 1);
m_html_widget->scroll_to_anchor(anchor);
} else {
auto url = m_html_widget->document()->complete_url(href);
m_html_widget->load(url);
}
}
};
m_link_context_menu = GUI::Menu::construct();
m_link_context_menu->add_action(GUI::Action::create("Open", [this](auto&) {
m_html_widget->on_link_click(m_link_context_menu_href, "", 0);
}));
m_link_context_menu->add_action(GUI::Action::create("Open in new tab", [this](auto&) {
m_html_widget->on_link_click(m_link_context_menu_href, "_blank", 0);
}));
m_link_context_menu->add_action(GUI::Action::create("Copy link", [this](auto&) {
GUI::Clipboard::the().set_data(m_html_widget->document()->complete_url(m_link_context_menu_href).to_string());
}));
m_link_context_menu->add_separator();
m_link_context_menu->add_action(GUI::Action::create("Download", [this](auto&) {
auto window = GUI::Window::construct();
window->set_rect(300, 300, 300, 150);
auto url = m_html_widget->document()->complete_url(m_link_context_menu_href);
window->set_title(String::format("0%% of %s", url.basename().characters()));
window->set_resizable(false);
window->set_main_widget<DownloadWidget>(url);
window->show();
(void)window.leak_ref();
}));
m_html_widget->on_link_context_menu_request = [this](auto& href, auto& screen_position) {
m_link_context_menu_href = href;
m_link_context_menu->popup(screen_position);
};
m_html_widget->on_link_middle_click = [this](auto& href) {
m_html_widget->on_link_click(href, "_blank", 0);
};
m_html_widget->on_title_change = [this](auto& title) {
if (title.is_null()) {
m_title = m_html_widget->main_frame().document()->url().to_string();
} else {
m_title = title;
}
if (on_title_change)
on_title_change(m_title);
};
m_html_widget->on_favicon_change = [this](auto& icon) {
m_icon = icon;
if (on_favicon_change)
on_favicon_change(icon);
};
auto focus_location_box_action = GUI::Action::create(
"Focus location box", { Mod_Ctrl, Key_L }, [this](auto&) {
m_location_box->select_all();
m_location_box->set_focus(true);
},
this);
m_statusbar = widget.add<GUI::StatusBar>();
m_html_widget->on_link_hover = [this](auto& href) {
m_statusbar->set_text(href);
};
m_html_widget->on_url_drop = [this](auto& url) {
m_html_widget->load(url);
};
m_menubar = GUI::MenuBar::construct();
auto& app_menu = m_menubar->add_menu("Browser");
app_menu.add_action(WindowActions::the().create_new_tab_action());
app_menu.add_action(GUI::Action::create(
"Close tab", { Mod_Ctrl, Key_W }, Gfx::Bitmap::load_from_file("/res/icons/16x16/close-tab.png"), [this](auto&) {
on_tab_close_request(*this);
},
this));
app_menu.add_action(*m_reload_action);
app_menu.add_separator();
app_menu.add_action(GUI::CommonActions::make_quit_action([](auto&) {
GUI::Application::the().quit();
}));
auto& view_menu = m_menubar->add_menu("View");
view_menu.add_action(GUI::CommonActions::make_fullscreen_action(
[this](auto&) {
window()->set_fullscreen(!window()->is_fullscreen());
auto is_fullscreen = window()->is_fullscreen();
auto* tab_widget = static_cast<GUI::TabWidget*>(parent_widget());
tab_widget->set_bar_visible(!is_fullscreen && tab_widget->children().size() > 1);
m_toolbar_container->set_visible(!is_fullscreen);
m_statusbar->set_visible(!is_fullscreen);
},
this));
auto& inspect_menu = m_menubar->add_menu("Inspect");
inspect_menu.add_action(GUI::Action::create(
"View source", { Mod_Ctrl, Key_U }, [this](auto&) {
ASSERT(m_html_widget->document());
auto url = m_html_widget->document()->url().to_string();
auto source = m_html_widget->document()->source();
auto window = GUI::Window::construct();
auto& editor = window->set_main_widget<GUI::TextEditor>();
editor.set_text(source);
editor.set_readonly(true);
editor.set_ruler_visible(true);
window->set_rect(150, 150, 640, 480);
window->set_title(url);
window->show();
(void)window.leak_ref();
},
this));
inspect_menu.add_action(GUI::Action::create(
"Inspect DOM tree", { Mod_None, Key_F12 }, [this](auto&) {
if (!m_dom_inspector_window) {
m_dom_inspector_window = GUI::Window::construct();
m_dom_inspector_window->set_rect(100, 100, 300, 500);
m_dom_inspector_window->set_title("DOM inspector");
m_dom_inspector_window->set_main_widget<InspectorWidget>();
}
auto* inspector_widget = static_cast<InspectorWidget*>(m_dom_inspector_window->main_widget());
inspector_widget->set_document(m_html_widget->document());
m_dom_inspector_window->show();
m_dom_inspector_window->move_to_front();
},
this));
inspect_menu.add_action(GUI::Action::create(
"Open JS Console", { Mod_Ctrl, Key_I }, [this](auto&) {
if (!m_console_window) {
m_console_window = GUI::Window::construct();
m_console_window->set_rect(100, 100, 500, 300);
m_console_window->set_title("JS Console");
m_console_window->set_main_widget<ConsoleWidget>();
}
auto* console_widget = static_cast<ConsoleWidget*>(m_console_window->main_widget());
console_widget->set_interpreter(m_html_widget->document()->interpreter().make_weak_ptr());
m_console_window->show();
m_console_window->move_to_front();
},
this));
auto& debug_menu = m_menubar->add_menu("Debug");
debug_menu.add_action(GUI::Action::create(
"Dump DOM tree", [this](auto&) {
Web::dump_tree(*m_html_widget->document());
},
this));
debug_menu.add_action(GUI::Action::create(
"Dump Layout tree", [this](auto&) {
Web::dump_tree(*m_html_widget->document()->layout_node());
},
this));
debug_menu.add_action(GUI::Action::create(
"Dump Style sheets", [this](auto&) {
for (auto& sheet : m_html_widget->document()->stylesheets()) {
dump_sheet(sheet);
}
},
this));
debug_menu.add_separator();
auto line_box_borders_action = GUI::Action::create_checkable(
"Line box borders", [this](auto& action) {
m_html_widget->set_should_show_line_box_borders(action.is_checked());
m_html_widget->update();
},
this);
line_box_borders_action->set_checked(false);
debug_menu.add_action(line_box_borders_action);
auto& bookmarks_menu = m_menubar->add_menu("Bookmarks");
bookmarks_menu.add_action(WindowActions::the().show_bookmarks_bar_action());
auto& help_menu = m_menubar->add_menu("Help");
help_menu.add_action(WindowActions::the().about_action());
m_tab_context_menu = GUI::Menu::construct();
m_tab_context_menu->add_action(GUI::Action::create("Reload Tab", [this](auto&) {
m_reload_action->activate();
}));
m_tab_context_menu->add_action(GUI::Action::create("Close Tab", [this](auto&) {
on_tab_close_request(*this);
}));
}
Tab::~Tab()
{
}
void Tab::load(const URL& url)
{
m_html_widget->load(url);
}
void Tab::update_actions()
{
m_go_back_action->set_enabled(m_history.can_go_back());
m_go_forward_action->set_enabled(m_history.can_go_forward());
}
void Tab::update_bookmark_button(const String& url)
{
if (BookmarksBarWidget::the().contains_bookmark(url)) {
m_bookmark_button->set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/star-yellow.png"));
m_bookmark_button->set_tooltip("Remove Bookmark");
} else {
m_bookmark_button->set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/star-contour.png"));
m_bookmark_button->set_tooltip("Add Bookmark");
}
}
void Tab::did_become_active()
{
Web::ResourceLoader::the().on_load_counter_change = [this] {
if (Web::ResourceLoader::the().pending_loads() == 0) {
m_statusbar->set_text("");
return;
}
m_statusbar->set_text(String::format("Loading (%d pending resources...)", Web::ResourceLoader::the().pending_loads()));
};
BookmarksBarWidget::the().on_bookmark_click = [this](auto& url, unsigned modifiers) {
if (modifiers & Mod_Ctrl)
on_tab_open_request(url);
else
m_html_widget->load(url);
};
BookmarksBarWidget::the().on_bookmark_hover = [this](auto&, auto& url) {
m_statusbar->set_text(url);
};
BookmarksBarWidget::the().remove_from_parent();
m_toolbar_container->add_child(BookmarksBarWidget::the());
auto is_fullscreen = window()->is_fullscreen();
m_toolbar_container->set_visible(!is_fullscreen);
m_statusbar->set_visible(!is_fullscreen);
GUI::Application::the().set_menubar(m_menubar);
}
void Tab::context_menu_requested(const Gfx::Point& screen_position)
{
m_tab_context_menu->popup(screen_position);
}
}
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