mirrors/ladybird
0
0
Fork 0
mirror of https://github.com/LadybirdBrowser/ladybird.git synced 2025-04-27 14:58:46 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 9

Libraries: Move to Userland/Libraries/

Browse source
This commit is contained in:
Andreas Kling 2021-01-12 12:17:30 +01:00
parent dc28c07fa5
commit 13d7c09125
Notes: sideshowbarker 2024-07-18 23:53:55 +09:00
1857 changed files with 266 additions and 274 deletions
Download patch file Download diff file Expand all files Collapse all files

765
Libraries/LibGUI/AbstractView.cpp
View file

@ -1,765 +0,0 @@
/*
* Copyright (c) 2018-2021, 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 <AK/StringBuilder.h>
#include <AK/Utf8View.h>
#include <AK/Vector.h>
#include <LibCore/Timer.h>
#include <LibGUI/AbstractView.h>
#include <LibGUI/DragOperation.h>
#include <LibGUI/Model.h>
#include <LibGUI/ModelEditingDelegate.h>
#include <LibGUI/Painter.h>
#include <LibGUI/ScrollBar.h>
#include <LibGUI/TextBox.h>
#include <LibGfx/Palette.h>
namespace GUI {
AbstractView::AbstractView()
: m_sort_order(SortOrder::Ascending)
, m_selection(*this)
{
set_focus_policy(GUI::FocusPolicy::StrongFocus);
}
AbstractView::~AbstractView()
{
if (m_searching_timer)
m_searching_timer->stop();
if (m_model)
m_model->unregister_view({}, *this);
}
void AbstractView::set_model(RefPtr<Model> model)
{
if (model == m_model)
return;
if (m_model)
m_model->unregister_view({}, *this);
m_model = move(model);
if (m_model)
m_model->register_view({}, *this);
model_did_update(GUI::Model::InvalidateAllIndexes);
scroll_to_top();
}
void AbstractView::model_did_update(unsigned int flags)
{
if (!model() || (flags & GUI::Model::InvalidateAllIndexes)) {
stop_editing();
m_edit_index = {};
m_hovered_index = {};
m_cursor_index = {};
m_drop_candidate_index = {};
clear_selection();
} else {
// FIXME: These may no longer point to whatever they did before,
// but let's be optimistic until we can be sure about it.
if (!model()->is_valid(m_edit_index)) {
stop_editing();
m_edit_index = {};
}
if (!model()->is_valid(m_hovered_index))
m_hovered_index = {};
if (!model()->is_valid(m_cursor_index))
m_cursor_index = {};
if (!model()->is_valid(m_drop_candidate_index))
m_drop_candidate_index = {};
selection().remove_matching([this](auto& index) { return !model()->is_valid(index); });
}
}
void AbstractView::clear_selection()
{
m_selection.clear();
}
void AbstractView::set_selection(const ModelIndex& new_index)
{
m_selection.set(new_index);
}
void AbstractView::add_selection(const ModelIndex& new_index)
{
m_selection.add(new_index);
}
void AbstractView::remove_selection(const ModelIndex& new_index)
{
m_selection.remove(new_index);
}
void AbstractView::toggle_selection(const ModelIndex& new_index)
{
m_selection.toggle(new_index);
}
void AbstractView::did_update_selection()
{
if (!model() || selection().first() != m_edit_index)
stop_editing();
if (model() && on_selection && selection().first().is_valid())
on_selection(selection().first());
}
void AbstractView::did_scroll()
{
update_edit_widget_position();
}
void AbstractView::update_edit_widget_position()
{
if (!m_edit_widget)
return;
m_edit_widget->set_relative_rect(m_edit_widget_content_rect.translated(-horizontal_scrollbar().value(), -vertical_scrollbar().value()));
}
void AbstractView::begin_editing(const ModelIndex& index)
{
ASSERT(is_editable());
ASSERT(model());
if (m_edit_index == index)
return;
if (!model()->is_editable(index))
return;
if (m_edit_widget) {
remove_child(*m_edit_widget);
m_edit_widget = nullptr;
}
m_edit_index = index;
ASSERT(aid_create_editing_delegate);
m_editing_delegate = aid_create_editing_delegate(index);
m_editing_delegate->bind(*model(), index);
m_editing_delegate->set_value(index.data());
m_edit_widget = m_editing_delegate->widget();
add_child(*m_edit_widget);
m_edit_widget->move_to_back();
m_edit_widget_content_rect = content_rect(index).translated(frame_thickness(), frame_thickness());
update_edit_widget_position();
m_edit_widget->set_focus(true);
m_editing_delegate->will_begin_editing();
m_editing_delegate->on_commit = [this] {
ASSERT(model());
model()->set_data(m_edit_index, m_editing_delegate->value());
stop_editing();
};
m_editing_delegate->on_rollback = [this] {
ASSERT(model());
stop_editing();
};
}
void AbstractView::stop_editing()
{
bool take_back_focus = false;
m_edit_index = {};
if (m_edit_widget) {
take_back_focus = m_edit_widget->is_focused();
remove_child(*m_edit_widget);
m_edit_widget = nullptr;
}
if (take_back_focus)
set_focus(true);
}
void AbstractView::activate(const ModelIndex& index)
{
if (on_activation)
on_activation(index);
}
void AbstractView::activate_selected()
{
if (!on_activation)
return;
selection().for_each_index([this](auto& index) {
on_activation(index);
});
}
void AbstractView::notify_selection_changed(Badge<ModelSelection>)
{
did_update_selection();
if (on_selection_change)
on_selection_change();
update();
}
NonnullRefPtr<Gfx::Font> AbstractView::font_for_index(const ModelIndex& index) const
{
if (!model())
return font();
auto font_data = index.data(ModelRole::Font);
if (font_data.is_font())
return font_data.as_font();
return font();
}
void AbstractView::mousedown_event(MouseEvent& event)
{
ScrollableWidget::mousedown_event(event);
if (!model())
return;
if (event.button() == MouseButton::Left)
m_left_mousedown_position = event.position();
auto index = index_at_event_position(event.position());
m_might_drag = false;
if (!index.is_valid()) {
clear_selection();
} else if (event.modifiers() & Mod_Ctrl) {
set_cursor(index, SelectionUpdate::Ctrl);
} else if (event.modifiers() & Mod_Shift) {
set_cursor(index, SelectionUpdate::Shift);
} else if (event.button() == MouseButton::Left && m_selection.contains(index) && !m_model->drag_data_type().is_null()) {
// We might be starting a drag, so don't throw away other selected items yet.
m_might_drag = true;
} else if (event.button() == MouseButton::Right) {
set_cursor(index, SelectionUpdate::ClearIfNotSelected);
} else {
set_cursor(index, SelectionUpdate::Set);
m_might_drag = true;
}
update();
}
void AbstractView::set_hovered_index(const ModelIndex& index)
{
if (m_hovered_index == index)
return;
auto old_index = m_hovered_index;
m_hovered_index = index;
did_change_hovered_index(old_index, index);
update();
}
void AbstractView::leave_event(Core::Event& event)
{
ScrollableWidget::leave_event(event);
set_hovered_index({});
}
void AbstractView::mousemove_event(MouseEvent& event)
{
if (!model())
return ScrollableWidget::mousemove_event(event);
auto hovered_index = index_at_event_position(event.position());
set_hovered_index(hovered_index);
auto data_type = m_model->drag_data_type();
if (data_type.is_null())
return ScrollableWidget::mousemove_event(event);
if (!m_might_drag)
return ScrollableWidget::mousemove_event(event);
if (!(event.buttons() & MouseButton::Left) || m_selection.is_empty()) {
m_might_drag = false;
return ScrollableWidget::mousemove_event(event);
}
auto diff = event.position() - m_left_mousedown_position;
auto distance_travelled_squared = diff.x() * diff.x() + diff.y() * diff.y();
constexpr int drag_distance_threshold = 5;
if (distance_travelled_squared <= drag_distance_threshold)
return ScrollableWidget::mousemove_event(event);
ASSERT(!data_type.is_null());
if (m_is_dragging)
return;
// An event might sneak in between us constructing the drag operation and the
// event loop exec at the end of `drag_operation->exec()' if the user is fast enough.
// Prevent this by just ignoring later drag initiations (until the current drag operation ends).
TemporaryChange dragging { m_is_dragging, true };
dbgln("Initiate drag!");
auto drag_operation = DragOperation::construct();
drag_operation->set_mime_data(m_model->mime_data(m_selection));
auto outcome = drag_operation->exec();
switch (outcome) {
case DragOperation::Outcome::Accepted:
dbgln("Drag was accepted!");
break;
case DragOperation::Outcome::Cancelled:
dbgln("Drag was cancelled!");
break;
default:
ASSERT_NOT_REACHED();
break;
}
}
void AbstractView::mouseup_event(MouseEvent& event)
{
ScrollableWidget::mouseup_event(event);
if (!model())
return;
if (m_might_drag) {
// We were unsure about unselecting items other than the current one
// in mousedown_event(), because we could be seeing a start of a drag.
// Since we're here, it was not that; so fix up the selection now.
auto index = index_at_event_position(event.position());
if (index.is_valid())
set_selection(index);
else
clear_selection();
m_might_drag = false;
update();
}
if (activates_on_selection())
activate_selected();
}
void AbstractView::doubleclick_event(MouseEvent& event)
{
if (!model())
return;
if (event.button() != MouseButton::Left)
return;
m_might_drag = false;
auto index = index_at_event_position(event.position());
if (!index.is_valid()) {
clear_selection();
return;
}
if (!m_selection.contains(index))
set_selection(index);
if (is_editable() && edit_triggers() & EditTrigger::DoubleClicked)
begin_editing(cursor_index());
else
activate(cursor_index());
}
void AbstractView::context_menu_event(ContextMenuEvent& event)
{
if (!model())
return;
auto index = index_at_event_position(event.position());
if (index.is_valid())
add_selection(index);
else
clear_selection();
if (on_context_menu_request)
on_context_menu_request(index, event);
}
void AbstractView::drop_event(DropEvent& event)
{
event.accept();
if (!model())
return;
auto index = index_at_event_position(event.position());
if (on_drop)
on_drop(index, event);
}
void AbstractView::set_selection_mode(SelectionMode selection_mode)
{
if (m_selection_mode == selection_mode)
return;
m_selection_mode = selection_mode;
if (m_selection_mode == SelectionMode::NoSelection)
m_selection.clear();
else if (m_selection_mode != SelectionMode::SingleSelection && m_selection.size() > 1) {
auto first_selected = m_selection.first();
m_selection.clear();
m_selection.set(first_selected);
}
update();
}
void AbstractView::set_key_column_and_sort_order(int column, SortOrder sort_order)
{
m_key_column = column;
m_sort_order = sort_order;
if (model())
model()->sort(column, sort_order);
update();
}
void AbstractView::set_cursor(ModelIndex index, SelectionUpdate selection_update, bool scroll_cursor_into_view)
{
if (!model() || !index.is_valid() || selection_mode() == SelectionMode::NoSelection) {
m_cursor_index = {};
cancel_searching();
return;
}
if (!m_cursor_index.is_valid() || model()->parent_index(m_cursor_index) != model()->parent_index(index))
cancel_searching();
if (selection_mode() == SelectionMode::SingleSelection && (selection_update == SelectionUpdate::Ctrl || selection_update == SelectionUpdate::Shift))
selection_update = SelectionUpdate::Set;
if (model()->is_valid(index)) {
if (selection_update == SelectionUpdate::Set)
set_selection(index);
else if (selection_update == SelectionUpdate::Ctrl)
toggle_selection(index);
else if (selection_update == SelectionUpdate::ClearIfNotSelected) {
if (!m_selection.contains(index))
clear_selection();
} else if (selection_update == SelectionUpdate::Shift) {
// Toggle all from cursor to new index.
auto min_row = min(cursor_index().row(), index.row());
auto max_row = max(cursor_index().row(), index.row());
auto min_column = min(cursor_index().column(), index.column());
auto max_column = max(cursor_index().column(), index.column());
for (auto row = min_row; row <= max_row; ++row) {
for (auto column = min_column; column <= max_column; ++column) {
auto new_index = model()->index(row, column);
if (new_index.is_valid())
toggle_selection(new_index);
}
}
// Finally toggle the cursor index again to make it go back to its current state.
toggle_selection(cursor_index());
}
// FIXME: Support the other SelectionUpdate types
auto old_cursor_index = m_cursor_index;
m_cursor_index = index;
did_change_cursor_index(old_cursor_index, m_cursor_index);
if (scroll_cursor_into_view)
scroll_into_view(index, true, true);
update();
}
}
void AbstractView::set_edit_triggers(unsigned triggers)
{
m_edit_triggers = triggers;
}
void AbstractView::hide_event(HideEvent& event)
{
stop_editing();
ScrollableWidget::hide_event(event);
}
void AbstractView::keydown_event(KeyEvent& event)
{
if (event.key() == KeyCode::Key_F2) {
if (is_editable() && edit_triggers() & EditTrigger::EditKeyPressed) {
begin_editing(cursor_index());
event.accept();
return;
}
}
if (event.key() == KeyCode::Key_Return) {
activate_selected();
event.accept();
return;
}
SelectionUpdate selection_update = SelectionUpdate::Set;
if (event.modifiers() == KeyModifier::Mod_Shift) {
selection_update = SelectionUpdate::Shift;
}
if (event.key() == KeyCode::Key_Left) {
move_cursor(CursorMovement::Left, selection_update);
event.accept();
return;
}
if (event.key() == KeyCode::Key_Right) {
move_cursor(CursorMovement::Right, selection_update);
event.accept();
return;
}
if (event.key() == KeyCode::Key_Up) {
move_cursor(CursorMovement::Up, selection_update);
event.accept();
return;
}
if (event.key() == KeyCode::Key_Down) {
move_cursor(CursorMovement::Down, selection_update);
event.accept();
return;
}
if (event.key() == KeyCode::Key_Home) {
move_cursor(CursorMovement::Home, selection_update);
event.accept();
return;
}
if (event.key() == KeyCode::Key_End) {
move_cursor(CursorMovement::End, selection_update);
event.accept();
return;
}
if (event.key() == KeyCode::Key_PageUp) {
move_cursor(CursorMovement::PageUp, selection_update);
event.accept();
return;
}
if (event.key() == KeyCode::Key_PageDown) {
move_cursor(CursorMovement::PageDown, selection_update);
event.accept();
return;
}
if (is_searchable()) {
if (event.key() == KeyCode::Key_Backspace) {
if (is_searching()) {
//if (event.modifiers() == Mod_Ctrl) {
// TODO: delete last word
//}
Utf8View view(m_searching);
size_t n_code_points = view.length();
if (n_code_points > 1) {
n_code_points--;
StringBuilder sb;
for (auto it = view.begin(); it != view.end(); ++it) {
if (n_code_points == 0)
break;
n_code_points--;
sb.append_code_point(*it);
}
do_search(sb.to_string());
start_searching_timer();
} else {
cancel_searching();
}
event.accept();
return;
}
} else if (event.key() == KeyCode::Key_Escape) {
if (is_searching()) {
cancel_searching();
event.accept();
return;
}
} else if (event.key() != KeyCode::Key_Tab && !event.ctrl() && !event.alt() && event.code_point() != 0) {
StringBuilder sb;
sb.append(m_searching);
sb.append_code_point(event.code_point());
do_search(sb.to_string());
start_searching_timer();
event.accept();
return;
}
}
ScrollableWidget::keydown_event(event);
}
void AbstractView::cancel_searching()
{
m_searching = nullptr;
if (m_searching_timer)
m_searching_timer->stop();
if (m_highlighted_search_index.is_valid()) {
m_highlighted_search_index = {};
update();
}
}
void AbstractView::start_searching_timer()
{
if (!m_searching_timer) {
m_searching_timer = add<Core::Timer>();
m_searching_timer->set_single_shot(true);
m_searching_timer->on_timeout = [this] {
cancel_searching();
};
}
m_searching_timer->set_interval(5 * 1000);
m_searching_timer->restart();
}
void AbstractView::do_search(String&& searching)
{
if (searching.is_empty() || !model()) {
cancel_searching();
return;
}
auto found_indexes = model()->matches(searching, Model::MatchesFlag::FirstMatchOnly | Model::MatchesFlag::MatchAtStart | Model::MatchesFlag::CaseInsensitive, model()->parent_index(cursor_index()));
if (!found_indexes.is_empty() && found_indexes[0].is_valid()) {
auto& index = found_indexes[0];
m_highlighted_search_index = index;
m_searching = move(searching);
set_selection(index);
scroll_into_view(index);
update();
}
}
bool AbstractView::is_searchable() const
{
if (!m_searchable || !model())
return false;
return model()->is_searchable();
}
void AbstractView::set_searchable(bool searchable)
{
if (m_searchable == searchable)
return;
m_searchable = searchable;
if (!m_searchable)
cancel_searching();
}
bool AbstractView::is_highlighting_searching(const ModelIndex& index) const
{
return index == m_highlighted_search_index;
}
void AbstractView::draw_item_text(Gfx::Painter& painter, const ModelIndex& index, bool is_selected, const Gfx::IntRect& text_rect, const StringView& item_text, const Gfx::Font& font, Gfx::TextAlignment alignment, Gfx::TextElision elision)
{
Color text_color;
if (is_selected)
text_color = is_focused() ? palette().selection_text() : palette().inactive_selection_text();
else
text_color = index.data(ModelRole::ForegroundColor).to_color(palette().color(foreground_role()));
if (is_highlighting_searching(index)) {
Utf8View searching_text(searching());
auto searching_length = searching_text.length();
// Highlight the text background first
painter.draw_text([&](const Gfx::IntRect& rect, u32) {
if (searching_length > 0) {
searching_length--;
painter.fill_rect(rect.inflated(0, 2), palette().highlight_searching());
}
},
text_rect, item_text, font, alignment, elision);
// Then draw the text
auto highlight_text_color = palette().highlight_searching_text();
searching_length = searching_text.length();
painter.draw_text([&](const Gfx::IntRect& rect, u32 code_point) {
if (searching_length > 0) {
searching_length--;
painter.draw_glyph_or_emoji(rect.location(), code_point, font, highlight_text_color);
} else {
painter.draw_glyph_or_emoji(rect.location(), code_point, font, text_color);
}
},
text_rect, item_text, font, alignment, elision);
} else {
if (m_draw_item_text_with_shadow) {
painter.draw_text(text_rect.translated(1, 1), item_text, font, alignment, Color::Black, elision);
painter.draw_text(text_rect, item_text, font, alignment, Color::White, elision);
} else {
painter.draw_text(text_rect, item_text, font, alignment, text_color, elision);
}
}
}
void AbstractView::focusin_event(FocusEvent& event)
{
ScrollableWidget::focusin_event(event);
if (model() && !cursor_index().is_valid()) {
move_cursor(CursorMovement::Home, SelectionUpdate::None);
clear_selection();
}
}
void AbstractView::drag_enter_event(DragEvent& event)
{
if (!model())
return;
// NOTE: Right now, AbstractView always accepts drags since we won't get "drag move" events
// unless we accept the "drag enter" event.
// We might be able to reduce event traffic by communicating the set of drag-accepting
// rects in this widget to the windowing system somehow.
event.accept();
dbgln("accepting drag of {}", event.mime_types().first());
}
void AbstractView::drag_move_event(DragEvent& event)
{
if (!model())
return;
auto index = index_at_event_position(event.position());
ModelIndex new_drop_candidate_index;
if (index.is_valid()) {
bool acceptable = model()->accepts_drag(index, event.mime_types());
if (acceptable)
new_drop_candidate_index = index;
}
if (m_drop_candidate_index != new_drop_candidate_index) {
m_drop_candidate_index = new_drop_candidate_index;
update();
}
if (m_drop_candidate_index.is_valid())
event.accept();
}
void AbstractView::drag_leave_event(Event&)
{
if (m_drop_candidate_index.is_valid()) {
m_drop_candidate_index = {};
update();
}
}
}