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Code Issues Projects Releases Packages Wiki Activity Actions 7
ladybird/Userland/Applications/Help/MainWidget.cpp
networkException 4230dbbb21 AK+Everywhere: Replace "protocol" with "scheme" url helpers 
URL had properly named replacements for protocol(), set_protocol() and
create_with_file_protocol() already. This patch removes these function
and updates all call sites to use the functions named according to the
specification.

See https://url.spec.whatwg.org/#concept-url-scheme
2022-09-29 09:39:04 +01:00

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/*
* Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "MainWidget.h"
#include <AK/String.h>
#include <AK/URL.h>
#include <Applications/Help/HelpWindowGML.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/File.h>
#include <LibCore/System.h>
#include <LibDesktop/Launcher.h>
#include <LibGUI/Action.h>
#include <LibGUI/Application.h>
#include <LibGUI/Clipboard.h>
#include <LibGUI/ListView.h>
#include <LibGUI/Menu.h>
#include <LibGUI/Menubar.h>
#include <LibGUI/MessageBox.h>
#include <LibGUI/Statusbar.h>
#include <LibGUI/TabWidget.h>
#include <LibGUI/TextBox.h>
#include <LibGUI/Toolbar.h>
#include <LibGUI/TreeView.h>
#include <LibGUI/Window.h>
#include <LibGfx/Bitmap.h>
#include <LibMain/Main.h>
#include <LibMarkdown/Document.h>
namespace Help {
MainWidget::MainWidget()
{
load_from_gml(help_window_gml);
m_toolbar = find_descendant_of_type_named<GUI::Toolbar>("toolbar");
m_tab_widget = find_descendant_of_type_named<GUI::TabWidget>("tab_widget");
m_search_container = find_descendant_of_type_named<GUI::Widget>("search_container");
m_search_box = find_descendant_of_type_named<GUI::TextBox>("search_box");
m_search_box->on_change = [this] {
m_filter_model->set_filter_term(m_search_box->text());
};
m_search_box->on_down_pressed = [this] {
m_search_view->move_cursor(GUI::AbstractView::CursorMovement::Down, GUI::AbstractView::SelectionUpdate::Set);
};
m_search_box->on_up_pressed = [this] {
m_search_view->move_cursor(GUI::AbstractView::CursorMovement::Up, GUI::AbstractView::SelectionUpdate::Set);
};
m_search_view = find_descendant_of_type_named<GUI::ListView>("search_view");
m_search_view->set_should_hide_unnecessary_scrollbars(true);
m_search_view->on_selection_change = [this] {
auto const& index = m_search_view->selection().first();
if (!index.is_valid())
return;
auto* view_model = m_search_view->model();
if (!view_model) {
m_web_view->load_empty_document();
return;
}
auto& search_model = *static_cast<GUI::FilteringProxyModel*>(view_model);
auto const& mapped_index = search_model.map(index);
String path = m_manual_model->page_path(mapped_index);
if (path.is_null()) {
m_web_view->load_empty_document();
return;
}
m_browse_view->selection().clear();
m_browse_view->selection().add(mapped_index);
m_history.push(path);
open_page(path);
};
m_browse_view = find_descendant_of_type_named<GUI::TreeView>("browse_view");
m_browse_view->on_selection_change = [this] {
String path = m_manual_model->page_path(m_browse_view->selection().first());
if (path.is_null())
return;
m_history.push(path);
open_page(path);
};
m_browse_view->on_toggle = [this](GUI::ModelIndex const& index, bool open) {
m_manual_model->update_section_node_on_toggle(index, open);
};
m_web_view = find_descendant_of_type_named<WebView::OutOfProcessWebView>("web_view");
m_web_view->on_link_click = [this](auto& url, auto&, unsigned) {
if (url.scheme() == "file") {
auto path = url.path();
if (!path.starts_with("/usr/share/man/"sv)) {
open_external(url);
return;
}
auto browse_view_index = m_manual_model->index_from_path(path);
if (browse_view_index.has_value()) {
dbgln("Found path _{}_ in m_manual_model at index {}", path, browse_view_index.value());
m_browse_view->selection().set(browse_view_index.value());
return;
}
m_history.push(path);
open_page(path);
} else if (url.scheme() == "help") {
if (url.host() == "man") {
if (url.paths().size() != 2) {
dbgln("Bad help page URL '{}'", url);
return;
}
auto const section = url.paths()[0];
auto const page = url.paths()[1];
auto const path = String::formatted("/usr/share/man/man{}/{}.md", section, page);
m_history.push(path);
open_url(URL::create_with_file_scheme(path, url.fragment()));
} else {
dbgln("Bad help operation '{}' in URL '{}'", url.host(), url);
}
} else {
open_external(url);
}
};
m_web_view->on_context_menu_request = [this](auto& screen_position) {
m_copy_action->set_enabled(!m_web_view->selected_text().is_empty());
m_context_menu->popup(screen_position);
};
m_web_view->on_link_hover = [this](URL const& url) {
if (url.is_valid())
m_statusbar->set_text(url.to_string());
else
m_statusbar->set_text({});
};
m_go_back_action = GUI::CommonActions::make_go_back_action([this](auto&) {
m_history.go_back();
open_page(m_history.current());
});
m_go_forward_action = GUI::CommonActions::make_go_forward_action([this](auto&) {
m_history.go_forward();
open_page(m_history.current());
});
m_go_back_action->set_enabled(false);
m_go_forward_action->set_enabled(false);
m_go_home_action = GUI::CommonActions::make_go_home_action([this](auto&) {
String path = "/usr/share/man/man7/Help-index.md";
m_history.push(path);
open_page(path);
});
m_copy_action = GUI::CommonActions::make_copy_action([this](auto&) {
auto selected_text = m_web_view->selected_text();
if (!selected_text.is_empty())
GUI::Clipboard::the().set_plain_text(selected_text);
});
m_select_all_action = GUI::CommonActions::make_select_all_action([this](auto&) {
m_web_view->select_all();
});
m_statusbar = find_descendant_of_type_named<GUI::Statusbar>("statusbar");
GUI::Application::the()->on_action_enter = [this](GUI::Action const& action) {
m_statusbar->set_override_text(action.status_tip());
};
GUI::Application::the()->on_action_leave = [this](GUI::Action const&) {
m_statusbar->set_override_text({});
};
}
void MainWidget::set_start_page(StringView start_page, u32 section)
{
bool set_start_page = false;
if (!start_page.is_null()) {
if (section != 0) {
// > Help [section] [name]
String path = String::formatted("/usr/share/man/man{}/{}.md", section, start_page);
m_history.push(path);
open_page(path);
set_start_page = true;
} else if (URL url = URL::create_with_url_or_path(start_page); url.is_valid() && url.path().ends_with(".md"sv)) {
// > Help [/path/to/documentation/file.md]
m_history.push(url.path());
open_page(url.path());
set_start_page = true;
} else {
// > Help [query]
// First, see if we can find the page by name
char const* sections[] = {
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"8"
};
for (auto s : sections) {
String path = String::formatted("/usr/share/man/man{}/{}.md", s, start_page);
if (Core::File::exists(path)) {
m_history.push(path);
open_page(path);
set_start_page = true;
break;
}
}
// No match, so treat the input as a search query
if (!set_start_page) {
m_tab_widget->set_active_widget(m_search_container);
m_search_box->set_focus(true);
m_search_box->set_text(start_page);
m_search_box->select_all();
m_filter_model->set_filter_term(m_search_box->text());
}
}
}
if (!set_start_page)
m_go_home_action->activate();
}
ErrorOr<void> MainWidget::initialize_fallibles(GUI::Window& window)
{
(void)TRY(m_toolbar->try_add_action(*m_go_back_action));
(void)TRY(m_toolbar->try_add_action(*m_go_forward_action));
(void)TRY(m_toolbar->try_add_action(*m_go_home_action));
auto file_menu = TRY(window.try_add_menu("&File"));
TRY(file_menu->try_add_action(GUI::CommonActions::make_quit_action([](auto&) {
GUI::Application::the()->quit();
})));
auto go_menu = TRY(window.try_add_menu("&Go"));
TRY(go_menu->try_add_action(*m_go_back_action));
TRY(go_menu->try_add_action(*m_go_forward_action));
TRY(go_menu->try_add_action(*m_go_home_action));
auto help_menu = TRY(window.try_add_menu("&Help"));
TRY(help_menu->try_add_action(GUI::Action::create("&Contents", { Key_F1 }, TRY(Gfx::Bitmap::try_load_from_file("/res/icons/16x16/filetype-unknown.png"sv)), [&](auto&) {
String path = "/usr/share/man/man1/Help.md";
open_page(path);
})));
TRY(help_menu->try_add_action(GUI::CommonActions::make_about_action("Help", TRY(GUI::Icon::try_create_default_icon("app-help"sv)), &window)));
m_context_menu = TRY(GUI::Menu::try_create());
TRY(m_context_menu->try_add_action(*m_go_back_action));
TRY(m_context_menu->try_add_action(*m_go_forward_action));
TRY(m_context_menu->try_add_action(*m_go_home_action));
TRY(m_context_menu->try_add_separator());
TRY(m_context_menu->try_add_action(*m_copy_action));
TRY(m_context_menu->try_add_action(*m_select_all_action));
m_manual_model = TRY(ManualModel::create());
m_browse_view->set_model(*m_manual_model);
m_filter_model = TRY(GUI::FilteringProxyModel::create(*m_manual_model));
m_search_view->set_model(*m_filter_model);
m_filter_model->set_filter_term(""sv);
return {};
}
void MainWidget::open_url(URL const& url)
{
m_go_back_action->set_enabled(m_history.can_go_back());
m_go_forward_action->set_enabled(m_history.can_go_forward());
if (url.scheme() == "file") {
m_web_view->load(url);
m_web_view->scroll_to_top();
GUI::Application::the()->deferred_invoke([&, path = url.path()] {
auto browse_view_index = m_manual_model->index_from_path(path);
if (browse_view_index.has_value()) {
m_browse_view->expand_tree(browse_view_index.value().parent());
String page_and_section = m_manual_model->page_and_section(browse_view_index.value());
window()->set_title(String::formatted("{} - Help", page_and_section));
} else {
window()->set_title("Help");
}
});
}
}
void MainWidget::open_external(URL const& url)
{
if (!Desktop::Launcher::open(url))
GUI::MessageBox::show(window(), String::formatted("The link to '{}' could not be opened.", url), "Failed to open link"sv, GUI::MessageBox::Type::Error);
}
void MainWidget::open_page(String const& path)
{
m_go_back_action->set_enabled(m_history.can_go_back());
m_go_forward_action->set_enabled(m_history.can_go_forward());
if (path.is_null()) {
window()->set_title("Help");
m_web_view->load_empty_document();
return;
}
open_url(URL::create_with_url_or_path(path));
}
}
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