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WindowServer: Stop tracking hovered menu independently from the index (#1093)

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Tracking the hovered menu item independently from the index of the
currently hovered item is error prone and bad code. Simplify WSMenu by
only tracking the index of the currently hovered item.

Fixes #1092
This commit is contained in:
shannonbooth 2020-01-18 20:56:51 +13:00 • committed by Andreas Kling
parent 488c510e02
commit f60bd255f5
2 changed files with 49 additions and 53 deletions
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95
Servers/WindowServer/WSMenu.cpp
View file

@ -155,7 +155,7 @@ void WSMenu::draw()
for (auto& item : m_items) {
if (item.type() == WSMenuItem::Text) {
Color text_color = palette.menu_base_text();
if (&item == m_hovered_item && item.is_enabled()) {
if (&item == hovered_item() && item.is_enabled()) {
painter.fill_rect(item.rect(), palette.menu_selection());
painter.draw_rect(item.rect(), palette.menu_selection().darkened());
text_color = palette.menu_selection_text();
@ -207,12 +207,18 @@ void WSMenu::draw()
}
}
WSMenuItem* WSMenu::hovered_item() const
{
if (m_hovered_item_index == -1)
return nullptr;
return const_cast<WSMenuItem*>(&item(m_hovered_item_index));
}
void WSMenu::update_for_new_hovered_item()
{
if (m_hovered_item && m_hovered_item->is_submenu()) {
ASSERT(m_hovered_item == &m_items.at(m_current_index));
WSMenuManager::the().close_everyone_not_in_lineage(*m_hovered_item->submenu());
m_hovered_item->submenu()->popup(m_hovered_item->rect().top_right().translated(menu_window()->rect().location()), true);
if (hovered_item() && hovered_item()->is_submenu()) {
WSMenuManager::the().close_everyone_not_in_lineage(*hovered_item()->submenu());
hovered_item()->submenu()->popup(hovered_item()->rect().top_right().translated(menu_window()->rect().location()), true);
} else {
WSMenuManager::the().close_everyone_not_in_lineage(*this);
WSMenuManager::the().set_current_menu(this);
@ -225,22 +231,20 @@ void WSMenu::open_hovered_item()
{
ASSERT(menu_window());
ASSERT(menu_window()->is_visible());
if (!m_hovered_item)
if (!hovered_item())
return;
ASSERT(m_hovered_item == &m_items.at(m_current_index));
if (m_hovered_item->is_enabled())
did_activate(*m_hovered_item);
if (hovered_item()->is_enabled())
did_activate(*hovered_item());
clear_hovered_item();
}
void WSMenu::decend_into_submenu_at_hovered_item()
{
ASSERT(m_hovered_item);
ASSERT(m_hovered_item->is_submenu());
auto submenu = m_hovered_item->submenu();
ASSERT(submenu->m_current_index == 0);
submenu->m_hovered_item = &submenu->m_items.at(0);
ASSERT(submenu->m_hovered_item->type() != WSMenuItem::Separator);
ASSERT(hovered_item());
ASSERT(hovered_item()->is_submenu());
auto submenu = hovered_item()->submenu();
submenu->m_hovered_item_index = 0;
ASSERT(submenu->hovered_item()->type() != WSMenuItem::Separator);
submenu->update_for_new_hovered_item();
m_in_submenu = true;
}
@ -249,17 +253,12 @@ void WSMenu::event(CEvent& event)
{
if (event.type() == WSEvent::MouseMove) {
ASSERT(menu_window());
auto* item = item_at(static_cast<const WSMouseEvent&>(event).position());
if (m_hovered_item == item)
int index = item_index_at(static_cast<const WSMouseEvent&>(event).position());
if (m_hovered_item_index == index)
return;
m_hovered_item = item;
if (m_hovered_item) {
// FIXME: Tell parent menu (if it exists) that it is currently in a submenu
m_current_index = m_items.find([&](auto& item) { return item.ptr() == m_hovered_item; }).index();
ASSERT(m_current_index != m_items.size());
}
m_hovered_item_index = index;
// FIXME: Tell parent menu (if it exists) that it is currently in a submenu
m_in_submenu = false;
update_for_new_hovered_item();
return;
@ -280,21 +279,21 @@ void WSMenu::event(CEvent& event)
ASSERT(menu_window()->is_visible());
// Default to the first item on key press if one has not been selected yet
if (!m_hovered_item) {
m_hovered_item = &m_items.at(0);
if (!hovered_item()) {
m_hovered_item_index = 0;
update_for_new_hovered_item();
return;
}
// Pass the event for the submenu that we are currently in to handle
if (m_in_submenu && key != Key_Left) {
ASSERT(m_hovered_item->is_submenu());
m_hovered_item->submenu()->dispatch_event(event);
ASSERT(hovered_item()->is_submenu());
hovered_item()->submenu()->dispatch_event(event);
return;
}
if (key == Key_Return) {
if (m_hovered_item->is_submenu())
if (hovered_item()->is_submenu())
decend_into_submenu_at_hovered_item();
else
open_hovered_item();
@ -305,11 +304,10 @@ void WSMenu::event(CEvent& event)
ASSERT(m_items.at(0).type() != WSMenuItem::Separator);
do {
m_current_index--;
if (m_current_index < 0)
m_current_index = m_items.size() - 1;
m_hovered_item = &m_items.at(m_current_index);
} while (m_hovered_item->type() == WSMenuItem::Separator);
m_hovered_item_index--;
if (m_hovered_item_index < 0)
m_hovered_item_index = m_items.size() - 1;
} while (hovered_item()->type() == WSMenuItem::Separator);
update_for_new_hovered_item();
return;
@ -319,11 +317,10 @@ void WSMenu::event(CEvent& event)
ASSERT(m_items.at(0).type() != WSMenuItem::Separator);
do {
m_current_index++;
if (m_current_index >= m_items.size())
m_current_index = 0;
m_hovered_item = &m_items.at(m_current_index);
} while (m_hovered_item->type() == WSMenuItem::Separator);
m_hovered_item_index++;
if (m_hovered_item_index >= m_items.size())
m_hovered_item_index = 0;
} while (hovered_item()->type() == WSMenuItem::Separator);
update_for_new_hovered_item();
return;
@ -333,15 +330,14 @@ void WSMenu::event(CEvent& event)
if (!m_in_submenu)
return;
m_hovered_item = &m_items.at(m_current_index);
ASSERT(m_hovered_item->is_submenu());
m_hovered_item->submenu()->clear_hovered_item();
ASSERT(hovered_item()->is_submenu());
hovered_item()->submenu()->clear_hovered_item();
m_in_submenu = false;
return;
}
if (key == Key_Right) {
if (m_hovered_item->is_submenu())
if (hovered_item()->is_submenu())
decend_into_submenu_at_hovered_item();
return;
}
@ -351,10 +347,9 @@ void WSMenu::event(CEvent& event)
void WSMenu::clear_hovered_item()
{
if (!m_hovered_item)
if (!hovered_item())
return;
m_current_index = 0;
m_hovered_item = nullptr;
m_hovered_item_index = -1;
m_in_submenu = false;
redraw();
}
@ -382,13 +377,15 @@ WSMenuItem* WSMenu::item_with_identifier(unsigned identifer)
return nullptr;
}
WSMenuItem* WSMenu::item_at(const Point& position)
int WSMenu::item_index_at(const Point& position)
{
int i = 0;
for (auto& item : m_items) {
if (item.rect().contains(position))
return &item;
return i;
++i;
}
return nullptr;
return -1;
}
void WSMenu::close()