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https://github.com/LadybirdBrowser/ladybird.git
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ccd701809f
`JsonValue::to_byte_string` has peculiar type-erasure semantics which is not usually intended. Unfortunately, it also has a very stereotypical name which does not warn about unexpected behavior. So let's prefix it with `deprecated_` to make new code use `as_string` if it just wants to get string value or `serialized<StringBuilder>` if it needs to do proper serialization.
461 lines
17 KiB
C++
461 lines
17 KiB
C++
/*
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* Copyright (c) 2023, Torsten Engelmann <engelTorsten@gmx.de>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibConfig/Client.h>
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#include <LibGUI/BoxLayout.h>
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#include <LibGUI/Button.h>
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#include <LibGUI/DynamicWidgetContainer.h>
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#include <LibGUI/DynamicWidgetContainerControls.h>
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#include <LibGUI/Label.h>
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#include <LibGUI/LabelWithEventDispatcher.h>
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#include <LibGUI/Painter.h>
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#include <LibGUI/Window.h>
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#include <LibGfx/Palette.h>
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REGISTER_WIDGET(GUI, DynamicWidgetContainer)
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namespace GUI {
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Vector<NonnullRefPtr<GUI::Window>> DynamicWidgetContainer::s_open_windows;
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DynamicWidgetContainer::DynamicWidgetContainer(Gfx::Orientation orientation)
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{
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VERIFY(orientation == Gfx::Orientation::Vertical);
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REGISTER_STRING_PROPERTY("section_label", section_label, set_section_label);
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REGISTER_STRING_PROPERTY("config_domain", config_domain, set_config_domain);
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REGISTER_SIZE_PROPERTY("detached_size", detached_size, set_detached_size);
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REGISTER_BOOL_PROPERTY("with_individual_order", is_container_with_individual_order, set_container_with_individual_order);
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REGISTER_BOOL_PROPERTY("show_controls", show_controls, set_show_controls);
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set_layout<GUI::VerticalBoxLayout>(0, 0);
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set_preferred_height(SpecialDimension::Shrink);
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auto controls_widget = MUST(GUI::DynamicWidgetContainerControls::try_create());
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m_controls_widget = controls_widget;
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add_child(*m_controls_widget);
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controls_widget->get_collapse_button()->on_click = [&](auto) {
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set_view_state(ViewState::Collapsed);
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};
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controls_widget->get_expand_button()->on_click = [&](auto) {
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set_view_state(ViewState::Expanded);
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};
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controls_widget->get_detach_button()->on_click = [&](auto) {
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set_view_state(ViewState::Detached);
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};
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update_control_button_visibility();
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m_label_widget = controls_widget->get_event_dispatcher();
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m_label_widget->on_double_click = [&](MouseEvent& event) {
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handle_doubleclick_event(event);
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};
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m_label_widget->on_mouseup_event = [&](MouseEvent& event) {
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handle_mouseup_event(event);
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};
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m_label_widget->on_mousemove_event = [&](MouseEvent& event) {
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handle_mousemove_event(event);
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};
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m_label_widget->set_grabbable_margins({ 0, 0, 0, m_label_widget->rect().width() });
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}
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DynamicWidgetContainer::~DynamicWidgetContainer()
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{
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close_all_detached_windows();
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}
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template<typename Callback>
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void DynamicWidgetContainer::for_each_child_container(Callback callback)
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{
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for_each_child([&](auto& child) {
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if (is<DynamicWidgetContainer>(child))
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return callback(static_cast<DynamicWidgetContainer&>(child));
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return IterationDecision::Continue;
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});
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}
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Vector<GUI::DynamicWidgetContainer&> DynamicWidgetContainer::child_containers() const
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{
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Vector<GUI::DynamicWidgetContainer&> widgets;
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widgets.ensure_capacity(children().size());
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for (auto& child : children()) {
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if (is<DynamicWidgetContainer>(*child))
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widgets.append(static_cast<DynamicWidgetContainer&>(*child));
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}
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return widgets;
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}
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void DynamicWidgetContainer::set_view_state(ViewState state)
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{
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if (view_state() == state)
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return;
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m_view_state = state;
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set_visible(view_state() != ViewState::Detached);
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for_each_child_widget([&](auto& widget) {
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if (m_controls_widget != widget)
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widget.set_visible(view_state() == ViewState::Expanded);
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return IterationDecision::Continue;
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});
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if (m_dimensions_before_collapse.has_value()) {
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set_min_size(m_dimensions_before_collapse->min_size);
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set_preferred_size(m_dimensions_before_collapse->preferred_size);
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m_dimensions_before_collapse = {};
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}
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if (view_state() == ViewState::Collapsed) {
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// We still need to force a minimal height in case of a container is configured as "grow". Even then we would like to let it collapse.
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m_dimensions_before_collapse = { { .preferred_size = preferred_size(), .min_size = min_size() } };
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set_min_height(m_controls_widget->height() + content_margins().vertical_total());
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set_preferred_size(preferred_width(), SpecialDimension::Shrink);
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}
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update_control_button_visibility();
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if (view_state() == ViewState::Detached)
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(void)detach_widgets();
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if (persist_state())
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Config::write_i32(config_domain(), "DynamicWidgetContainers"sv, section_label(), to_underlying(state));
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}
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void DynamicWidgetContainer::restore_view_state()
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{
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if (!persist_state())
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return;
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deferred_invoke([&]() {
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if (is_container_with_individual_order()) {
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auto order_or_error = JsonValue::from_string(Config::read_string(config_domain(), "DynamicWidgetContainers"sv, section_label()));
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if (order_or_error.is_error() || !order_or_error.value().is_array()) {
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Config::remove_key(config_domain(), "DynamicWidgetContainers"sv, section_label());
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return;
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}
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Vector<NonnullRefPtr<Widget>> new_child_order;
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auto containers = child_containers();
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order_or_error.value().as_array().for_each([&](auto& section_label) {
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for (auto& container : containers) {
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if (container.section_label() == section_label.as_string())
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new_child_order.append(container);
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}
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});
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// Are there any children that are not known to our persisted order?
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for (auto& container : containers) {
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// FIXME: Optimize performance and get rid of contains_slow so that this does not become a issue when a lot of child containers are used.
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if (!new_child_order.contains_slow(container))
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new_child_order.append(container);
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}
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// Rearrange child widgets to the defined order.
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auto childs = child_widgets();
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for (auto& child : childs) {
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if (new_child_order.contains_slow(child))
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child.remove_from_parent();
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}
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for (auto const& child : new_child_order)
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add_child(*child);
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} else {
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int persisted_state = Config::read_i32(config_domain(), "DynamicWidgetContainers"sv, section_label(), to_underlying(ViewState::Expanded));
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set_view_state(static_cast<ViewState>(persisted_state));
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}
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update();
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});
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}
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void DynamicWidgetContainer::set_section_label(String label)
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{
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m_section_label = move(label);
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m_label_widget->set_text(m_section_label);
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}
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void DynamicWidgetContainer::set_config_domain(String domain)
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{
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m_config_domain = move(domain);
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// FIXME: A much better solution would be to call the restore_view_state within a dedicated "initialization finished" method that is called by the gml runtime after that widget is ready.
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// We do not have such a method yet.
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restore_view_state();
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}
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void DynamicWidgetContainer::set_detached_size(Gfx::IntSize const size)
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{
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m_detached_size = { size };
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}
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void DynamicWidgetContainer::set_show_controls(bool value)
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{
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m_show_controls = value;
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m_controls_widget->set_visible(m_controls_widget->is_visible() && show_controls());
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update();
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}
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void DynamicWidgetContainer::set_container_with_individual_order(bool value)
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{
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m_is_container_with_individual_order = value;
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}
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void DynamicWidgetContainer::second_paint_event(PaintEvent&)
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{
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GUI::Painter painter(*this);
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painter.draw_line({ 0, height() - 1 }, { width(), height() - 1 }, palette().threed_shadow1());
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if (!m_is_dragging && !m_render_as_move_target)
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return;
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if (m_is_dragging) {
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// FIXME: Would be nice if we could paint outside our own boundaries.
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auto move_widget_indicator = rect().translated(m_current_mouse_position).translated(-m_drag_start_location);
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painter.fill_rect(move_widget_indicator, palette().rubber_band_fill());
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painter.draw_rect_with_thickness(move_widget_indicator, palette().rubber_band_border(), 1);
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} else if (m_render_as_move_target) {
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painter.fill_rect(rect(), palette().rubber_band_fill());
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painter.draw_rect_with_thickness({ rect().x(), rect().y(), rect().width() - 1, rect().height() - 1 }, palette().rubber_band_border(), 1);
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}
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}
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ErrorOr<void> DynamicWidgetContainer::detach_widgets()
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{
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if (!m_detached_widgets_window.has_value()) {
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auto detached_window = TRY(GUI::Window::try_create());
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detached_window->set_title(section_label().to_byte_string());
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detached_window->set_window_type(WindowType::Normal);
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if (has_detached_size())
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detached_window->resize(detached_size());
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else
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detached_window->resize(size());
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detached_window->center_on_screen();
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auto root_container = detached_window->set_main_widget<GUI::Frame>();
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root_container->set_fill_with_background_color(true);
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root_container->set_layout<GUI::VerticalBoxLayout>();
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root_container->set_frame_style(Gfx::FrameStyle::Window);
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auto transfer_children = [this](auto reciever, auto children) {
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for (NonnullRefPtr<GUI::Widget> widget : children) {
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if (widget == m_controls_widget)
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continue;
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widget->remove_from_parent();
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widget->set_visible(true);
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reciever->add_child(widget);
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}
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};
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transfer_children(root_container, child_widgets());
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detached_window->on_close = [this, root_container, transfer_children]() {
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transfer_children(this, root_container->child_widgets());
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set_view_state(ViewState::Expanded);
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unregister_open_window(m_detached_widgets_window.value());
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m_detached_widgets_window = {};
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};
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m_detached_widgets_window = detached_window;
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}
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register_open_window(m_detached_widgets_window.value());
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if (m_is_dragging)
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m_detached_widgets_window.value()->move_to(screen_relative_rect().location().translated(m_current_mouse_position).translated({ m_detached_widgets_window.value()->width() / -2, 0 }));
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m_detached_widgets_window.value()->show();
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return {};
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}
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void DynamicWidgetContainer::close_all_detached_windows()
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{
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for (auto window : DynamicWidgetContainer::s_open_windows.in_reverse())
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window->close();
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}
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void DynamicWidgetContainer::register_open_window(NonnullRefPtr<GUI::Window> window)
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{
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s_open_windows.append(window);
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}
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void DynamicWidgetContainer::unregister_open_window(NonnullRefPtr<GUI::Window> window)
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{
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Optional<size_t> match = s_open_windows.find_first_index(window);
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if (match.has_value())
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s_open_windows.remove(match.value());
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}
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void DynamicWidgetContainer::handle_mouseup_event(MouseEvent& event)
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{
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if (event.button() != MouseButton::Primary)
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return;
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if (m_is_dragging) {
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// If we dropped the widget outside of ourself, we would like to detach it.
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if (m_parent_container == nullptr && !rect().contains(event.position()))
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set_view_state(ViewState::Detached);
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if (m_parent_container != nullptr) {
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bool should_move_position = m_parent_container->check_has_move_target(relative_position().translated(m_current_mouse_position), MoveTargetOperation::ClearAllTargets);
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if (should_move_position)
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m_parent_container->swap_widget_positions(*this, relative_position().translated(m_current_mouse_position));
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else
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set_view_state(ViewState::Detached);
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}
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m_is_dragging = false;
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// Change the cursor back to normal after dragging is finished. Otherwise the cursor will only change if the mouse moves.
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m_label_widget->update_cursor(Gfx::StandardCursor::Arrow);
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update();
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}
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}
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void DynamicWidgetContainer::handle_mousemove_event(MouseEvent& event)
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{
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auto changed_cursor = m_is_dragging ? Gfx::StandardCursor::Move : Gfx::StandardCursor::Arrow;
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if (m_move_widget_knurl.contains(event.position()) && !m_is_dragging)
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changed_cursor = Gfx::StandardCursor::Hand;
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if (event.buttons() == MouseButton::Primary && !m_is_dragging) {
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m_is_dragging = true;
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m_drag_start_location = event.position();
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changed_cursor = Gfx::StandardCursor::Move;
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}
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if (m_is_dragging) {
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m_current_mouse_position = event.position();
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if (m_parent_container != nullptr) {
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m_parent_container->check_has_move_target(relative_position().translated(m_current_mouse_position), MoveTargetOperation::SetTarget);
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}
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update();
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}
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m_label_widget->update_cursor(changed_cursor);
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}
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void DynamicWidgetContainer::handle_doubleclick_event(MouseEvent& event)
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{
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if (event.button() != MouseButton::Primary)
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return;
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if (view_state() == ViewState::Expanded)
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set_view_state(ViewState::Collapsed);
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else if (view_state() == ViewState::Collapsed)
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set_view_state(ViewState::Expanded);
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}
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void DynamicWidgetContainer::resize_event(ResizeEvent&)
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{
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// Check if there is any content to display, and hide ourself if there would be nothing to display.
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// This allows us to make the whole section not taking up space if child-widget visibility is maintained outside.
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if (m_previous_frame_style.has_value() && height() != 0) {
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m_controls_widget->set_visible(show_controls());
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set_frame_style(m_previous_frame_style.value());
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m_previous_frame_style = {};
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// FIXME: Get rid of this, without the deferred invoke the lower part of the containing widget might not be drawn correctly :-/
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deferred_invoke([&]() {
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invalidate_layout();
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});
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}
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if (view_state() == ViewState::Expanded && !m_previous_frame_style.has_value() && height() == (content_margins().top() + content_margins().bottom() + m_controls_widget->height())) {
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m_controls_widget->set_visible(false);
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m_previous_frame_style = frame_style();
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set_frame_style(Gfx::FrameStyle::NoFrame);
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deferred_invoke([&]() {
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invalidate_layout();
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});
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}
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}
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void DynamicWidgetContainer::child_event(Core::ChildEvent& event)
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{
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if (event.type() == Event::ChildAdded && event.child() && is<GUI::DynamicWidgetContainer>(*event.child()))
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static_cast<DynamicWidgetContainer&>(*event.child()).set_parent_container(*this);
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GUI::Frame::child_event(event);
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}
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void DynamicWidgetContainer::set_parent_container(RefPtr<GUI::DynamicWidgetContainer> container)
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{
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m_parent_container = container;
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}
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bool DynamicWidgetContainer::check_has_move_target(Gfx::IntPoint relative_mouse_position, MoveTargetOperation operation)
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{
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bool matched = false;
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for_each_child_container([&](auto& child) {
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bool is_target = child.relative_rect().contains(relative_mouse_position);
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matched |= is_target;
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child.set_render_as_move_target(operation == MoveTargetOperation::SetTarget ? is_target : false);
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return IterationDecision::Continue;
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});
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return matched;
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}
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void DynamicWidgetContainer::set_render_as_move_target(bool is_target)
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{
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if (m_render_as_move_target == is_target)
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return;
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m_render_as_move_target = is_target;
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update();
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}
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void DynamicWidgetContainer::swap_widget_positions(NonnullRefPtr<Core::EventReceiver> source_widget, Gfx::IntPoint destination_positon)
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{
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Optional<NonnullRefPtr<Core::EventReceiver>> destination_widget;
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for_each_child_container([&](auto& child) {
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if (child.relative_rect().contains(destination_positon)) {
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destination_widget = child;
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return IterationDecision::Break;
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}
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return IterationDecision::Continue;
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});
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VERIFY(destination_widget.has_value());
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if (source_widget == destination_widget.value())
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return;
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auto source_position = children().find_first_index(*source_widget);
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auto destination_position = children().find_first_index(*destination_widget.value());
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VERIFY(source_position.has_value());
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VERIFY(destination_position.has_value());
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swap(children()[source_position.value()], children()[destination_position.value()]);
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// FIXME: Find a better solution to instantly display the new widget order.
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// invalidate_layout is not working :/
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auto childs = child_widgets();
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for (RefPtr<GUI::Widget> widget : childs) {
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widget->remove_from_parent();
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add_child(*widget);
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}
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if (!persist_state())
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return;
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JsonArray new_widget_order;
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for (auto& child : child_containers())
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new_widget_order.must_append(child.section_label());
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Config::write_string(config_domain(), "DynamicWidgetContainers"sv, section_label(), new_widget_order.serialized<StringBuilder>());
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}
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void DynamicWidgetContainer::update_control_button_visibility()
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{
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auto expand_button = m_controls_widget->find_descendant_of_type_named<GUI::Button>("expand_button");
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expand_button->set_visible(view_state() == ViewState::Collapsed);
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auto collapse_button = m_controls_widget->find_descendant_of_type_named<GUI::Button>("collapse_button");
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collapse_button->set_visible(view_state() == ViewState::Expanded);
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}
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}
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