mirror of
https://github.com/LadybirdBrowser/ladybird.git
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7a2bef7fe1
This patch implements man pages opened using the help url protocol properly getting added to the navigation history as well as enabling the back and forward buttons in such cases.
313 lines
11 KiB
C++
313 lines
11 KiB
C++
/*
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* Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
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* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2021, Sam Atkins <atkinssj@serenityos.org>
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* Copyright (c) 2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "MainWidget.h"
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#include <AK/String.h>
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#include <AK/URL.h>
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#include <Applications/Help/HelpWindowGML.h>
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#include <LibCore/ArgsParser.h>
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#include <LibCore/File.h>
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#include <LibCore/System.h>
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#include <LibDesktop/Launcher.h>
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#include <LibGUI/Action.h>
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#include <LibGUI/Application.h>
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#include <LibGUI/Clipboard.h>
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#include <LibGUI/ListView.h>
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#include <LibGUI/Menu.h>
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#include <LibGUI/Menubar.h>
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#include <LibGUI/MessageBox.h>
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#include <LibGUI/Statusbar.h>
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#include <LibGUI/TabWidget.h>
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#include <LibGUI/TextBox.h>
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#include <LibGUI/Toolbar.h>
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#include <LibGUI/TreeView.h>
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#include <LibGUI/Window.h>
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#include <LibGfx/Bitmap.h>
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#include <LibMain/Main.h>
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#include <LibMarkdown/Document.h>
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namespace Help {
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MainWidget::MainWidget()
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{
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load_from_gml(help_window_gml);
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m_toolbar = find_descendant_of_type_named<GUI::Toolbar>("toolbar");
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m_tab_widget = find_descendant_of_type_named<GUI::TabWidget>("tab_widget");
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m_search_container = find_descendant_of_type_named<GUI::Widget>("search_container");
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m_search_box = find_descendant_of_type_named<GUI::TextBox>("search_box");
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m_search_box->on_change = [this] {
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m_filter_model->set_filter_term(m_search_box->text());
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};
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m_search_box->on_down_pressed = [this] {
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m_search_view->move_cursor(GUI::AbstractView::CursorMovement::Down, GUI::AbstractView::SelectionUpdate::Set);
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};
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m_search_box->on_up_pressed = [this] {
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m_search_view->move_cursor(GUI::AbstractView::CursorMovement::Up, GUI::AbstractView::SelectionUpdate::Set);
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};
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m_search_view = find_descendant_of_type_named<GUI::ListView>("search_view");
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m_search_view->set_should_hide_unnecessary_scrollbars(true);
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m_search_view->on_selection_change = [this] {
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auto const& index = m_search_view->selection().first();
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if (!index.is_valid())
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return;
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auto* view_model = m_search_view->model();
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if (!view_model) {
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m_web_view->load_empty_document();
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return;
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}
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auto& search_model = *static_cast<GUI::FilteringProxyModel*>(view_model);
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auto const& mapped_index = search_model.map(index);
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String path = m_manual_model->page_path(mapped_index);
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if (path.is_null()) {
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m_web_view->load_empty_document();
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return;
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}
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m_browse_view->selection().clear();
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m_browse_view->selection().add(mapped_index);
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m_history.push(path);
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open_page(path);
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};
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m_browse_view = find_descendant_of_type_named<GUI::TreeView>("browse_view");
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m_browse_view->on_selection_change = [this] {
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String path = m_manual_model->page_path(m_browse_view->selection().first());
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if (path.is_null())
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return;
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m_history.push(path);
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open_page(path);
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};
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m_browse_view->on_toggle = [this](GUI::ModelIndex const& index, bool open) {
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m_manual_model->update_section_node_on_toggle(index, open);
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};
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m_web_view = find_descendant_of_type_named<WebView::OutOfProcessWebView>("web_view");
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m_web_view->on_link_click = [this](auto& url, auto&, unsigned) {
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if (url.protocol() == "file") {
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auto path = url.path();
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if (!path.starts_with("/usr/share/man/"sv)) {
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open_external(url);
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return;
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}
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auto browse_view_index = m_manual_model->index_from_path(path);
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if (browse_view_index.has_value()) {
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dbgln("Found path _{}_ in m_manual_model at index {}", path, browse_view_index.value());
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m_browse_view->selection().set(browse_view_index.value());
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return;
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}
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m_history.push(path);
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open_page(path);
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} else if (url.protocol() == "help") {
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if (url.host() == "man") {
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if (url.paths().size() != 2) {
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dbgln("Bad help page URL '{}'", url);
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return;
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}
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auto const section = url.paths()[0];
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auto const page = url.paths()[1];
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auto const path = String::formatted("/usr/share/man/man{}/{}.md", section, page);
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m_history.push(path);
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open_url(URL::create_with_file_scheme(path, url.fragment()));
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} else {
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dbgln("Bad help operation '{}' in URL '{}'", url.host(), url);
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}
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} else {
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open_external(url);
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}
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};
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m_web_view->on_context_menu_request = [this](auto& screen_position) {
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m_copy_action->set_enabled(!m_web_view->selected_text().is_empty());
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m_context_menu->popup(screen_position);
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};
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m_web_view->on_link_hover = [this](URL const& url) {
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if (url.is_valid())
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m_statusbar->set_text(url.to_string());
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else
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m_statusbar->set_text({});
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};
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m_go_back_action = GUI::CommonActions::make_go_back_action([this](auto&) {
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m_history.go_back();
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open_page(m_history.current());
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});
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m_go_forward_action = GUI::CommonActions::make_go_forward_action([this](auto&) {
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m_history.go_forward();
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open_page(m_history.current());
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});
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m_go_back_action->set_enabled(false);
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m_go_forward_action->set_enabled(false);
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m_go_home_action = GUI::CommonActions::make_go_home_action([this](auto&) {
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String path = "/usr/share/man/man7/Help-index.md";
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m_history.push(path);
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open_page(path);
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});
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m_copy_action = GUI::CommonActions::make_copy_action([this](auto&) {
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auto selected_text = m_web_view->selected_text();
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if (!selected_text.is_empty())
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GUI::Clipboard::the().set_plain_text(selected_text);
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});
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m_select_all_action = GUI::CommonActions::make_select_all_action([this](auto&) {
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m_web_view->select_all();
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});
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m_statusbar = find_descendant_of_type_named<GUI::Statusbar>("statusbar");
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GUI::Application::the()->on_action_enter = [this](GUI::Action const& action) {
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m_statusbar->set_override_text(action.status_tip());
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};
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GUI::Application::the()->on_action_leave = [this](GUI::Action const&) {
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m_statusbar->set_override_text({});
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};
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}
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void MainWidget::set_start_page(StringView start_page, u32 section)
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{
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bool set_start_page = false;
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if (!start_page.is_null()) {
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if (section != 0) {
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// > Help [section] [name]
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String path = String::formatted("/usr/share/man/man{}/{}.md", section, start_page);
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m_history.push(path);
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open_page(path);
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set_start_page = true;
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} else if (URL url = URL::create_with_url_or_path(start_page); url.is_valid() && url.path().ends_with(".md"sv)) {
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// > Help [/path/to/documentation/file.md]
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m_history.push(url.path());
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open_page(url.path());
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set_start_page = true;
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} else {
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// > Help [query]
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// First, see if we can find the page by name
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char const* sections[] = {
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"1",
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"2",
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"3",
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"4",
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"5",
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"6",
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"7",
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"8"
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};
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for (auto s : sections) {
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String path = String::formatted("/usr/share/man/man{}/{}.md", s, start_page);
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if (Core::File::exists(path)) {
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m_history.push(path);
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open_page(path);
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set_start_page = true;
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break;
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}
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}
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// No match, so treat the input as a search query
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if (!set_start_page) {
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m_tab_widget->set_active_widget(m_search_container);
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m_search_box->set_focus(true);
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m_search_box->set_text(start_page);
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m_search_box->select_all();
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m_filter_model->set_filter_term(m_search_box->text());
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}
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}
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}
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if (!set_start_page)
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m_go_home_action->activate();
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}
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ErrorOr<void> MainWidget::initialize_fallibles(GUI::Window& window)
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{
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(void)TRY(m_toolbar->try_add_action(*m_go_back_action));
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(void)TRY(m_toolbar->try_add_action(*m_go_forward_action));
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(void)TRY(m_toolbar->try_add_action(*m_go_home_action));
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auto file_menu = TRY(window.try_add_menu("&File"));
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TRY(file_menu->try_add_action(GUI::CommonActions::make_quit_action([](auto&) {
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GUI::Application::the()->quit();
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})));
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auto go_menu = TRY(window.try_add_menu("&Go"));
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TRY(go_menu->try_add_action(*m_go_back_action));
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TRY(go_menu->try_add_action(*m_go_forward_action));
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TRY(go_menu->try_add_action(*m_go_home_action));
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auto help_menu = TRY(window.try_add_menu("&Help"));
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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&) {
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String path = "/usr/share/man/man1/Help.md";
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open_page(path);
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})));
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TRY(help_menu->try_add_action(GUI::CommonActions::make_about_action("Help", TRY(GUI::Icon::try_create_default_icon("app-help"sv)), &window)));
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m_context_menu = TRY(GUI::Menu::try_create());
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TRY(m_context_menu->try_add_action(*m_go_back_action));
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TRY(m_context_menu->try_add_action(*m_go_forward_action));
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TRY(m_context_menu->try_add_action(*m_go_home_action));
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TRY(m_context_menu->try_add_separator());
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TRY(m_context_menu->try_add_action(*m_copy_action));
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TRY(m_context_menu->try_add_action(*m_select_all_action));
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m_manual_model = TRY(ManualModel::create());
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m_browse_view->set_model(*m_manual_model);
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m_filter_model = TRY(GUI::FilteringProxyModel::create(*m_manual_model));
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m_search_view->set_model(*m_filter_model);
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m_filter_model->set_filter_term(""sv);
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return {};
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}
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void MainWidget::open_url(URL const& url)
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{
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m_go_back_action->set_enabled(m_history.can_go_back());
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m_go_forward_action->set_enabled(m_history.can_go_forward());
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if (url.protocol() == "file") {
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m_web_view->load(url);
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m_web_view->scroll_to_top();
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GUI::Application::the()->deferred_invoke([&, path = url.path()] {
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auto browse_view_index = m_manual_model->index_from_path(path);
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if (browse_view_index.has_value()) {
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m_browse_view->expand_tree(browse_view_index.value().parent());
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String page_and_section = m_manual_model->page_and_section(browse_view_index.value());
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window()->set_title(String::formatted("{} - Help", page_and_section));
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} else {
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window()->set_title("Help");
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}
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});
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}
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}
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void MainWidget::open_external(URL const& url)
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{
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if (!Desktop::Launcher::open(url))
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GUI::MessageBox::show(window(), String::formatted("The link to '{}' could not be opened.", url), "Failed to open link"sv, GUI::MessageBox::Type::Error);
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}
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void MainWidget::open_page(String const& path)
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{
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m_go_back_action->set_enabled(m_history.can_go_back());
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m_go_forward_action->set_enabled(m_history.can_go_forward());
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if (path.is_null()) {
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window()->set_title("Help");
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m_web_view->load_empty_document();
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return;
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}
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open_url(URL::create_with_url_or_path(path));
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}
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}
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