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Fix windows not being deleted when order changed during deletion

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pull/336/head
Jonathan G Rennison 3 years ago
parent 25a467730e
commit 782fba3064
2 changed files with 63 additions and 14 deletions
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28
src/window.cpp
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@ -57,6 +57,8 @@ static Window *_last_scroll_window = nullptr; ///< Window of the last scroll eve
WindowBase *_z_front_window = nullptr;
/** List of windows opened at the screen sorted from the back. */
WindowBase *_z_back_window = nullptr;
/** List of windows in an arbitrary order, that is not instantaneously changed by bringing windows to the front. */
WindowBase *_first_window = nullptr;
/** If false, highlight is white, otherwise the by the widget defined colour. */
bool _window_highlight_colour = false;
@ -1192,7 +1194,7 @@ void DeleteWindowById(WindowClass cls, WindowNumber number, bool force)
void DeleteWindowByClass(WindowClass cls)
{
/* Note: the container remains stable, even when deleting windows. */
for (Window *w : Window::IterateFromBack()) {
for (Window *w : Window::IterateUnordered()) {
if (w->window_class == cls) {
delete w;
}
@ -1208,7 +1210,7 @@ void DeleteWindowByClass(WindowClass cls)
void DeleteCompanyWindows(CompanyID id)
{
/* Note: the container remains stable, even when deleting windows. */
for (Window *w : Window::IterateFromBack()) {
for (Window *w : Window::IterateUnordered()) {
if (w->owner == id) {
delete w;
}
@ -1501,6 +1503,8 @@ void Window::InitializeData(WindowNumber window_number)
/* Insert the window into the correct location in the z-ordering. */
AddWindowToZOrdering(this);
this->next_window = _first_window;
_first_window = this;
}
/**
@ -1901,6 +1905,7 @@ void InitWindowSystem()
_z_back_window = nullptr;
_z_front_window = nullptr;
_first_window = nullptr;
_focused_window = nullptr;
_mouseover_last_w = nullptr;
_last_scroll_window = nullptr;
@ -1921,7 +1926,7 @@ void UnInitWindowSystem()
{
UnshowCriticalError();
for (Window *w : Window::IterateFromFront()) delete w;
for (Window *w : Window::IterateUnordered()) delete w;
for (WindowBase *w = _z_front_window; w != nullptr; /* nothing */) {
WindowBase *to_del = w;
@ -1931,6 +1936,7 @@ void UnInitWindowSystem()
_z_front_window = nullptr;
_z_back_window = nullptr;
_first_window = nullptr;
}
/**
@ -3152,6 +3158,8 @@ void InputLoop()
CheckSoftLimit();
bool reset_window_nexts = false;
/* Do the actual free of the deleted windows. */
for (WindowBase *v = _z_front_window; v != nullptr; /* nothing */) {
WindowBase *w = v;
@ -3161,6 +3169,14 @@ void InputLoop()
RemoveWindowFromZOrdering(w);
free(w);
reset_window_nexts = true;
}
if (reset_window_nexts) {
_first_window = _z_front_window;
for (WindowBase *w = _z_front_window; w != nullptr; w = w->z_back) {
w->next_window = w->z_back;
}
}
if (_input_events_this_tick != 0) {
@ -3414,7 +3430,7 @@ void CallWindowGameTickEvent()
void DeleteNonVitalWindows()
{
/* Note: the container remains stable, even when deleting windows. */
for (const Window *w : Window::IterateFromBack()) {
for (const Window *w : Window::IterateUnordered()) {
if (w->window_class != WC_MAIN_WINDOW &&
w->window_class != WC_SELECT_GAME &&
w->window_class != WC_MAIN_TOOLBAR &&
@ -3440,7 +3456,7 @@ void DeleteAllNonVitalWindows()
DeleteNonVitalWindows();
/* Note: the container remains stable, even when deleting windows. */
for (const Window *w : Window::IterateFromBack()) {
for (const Window *w : Window::IterateUnordered()) {
if (w->flags & WF_STICKY) {
delete w;
}
@ -3465,7 +3481,7 @@ void DeleteAllMessages()
void DeleteConstructionWindows()
{
/* Note: the container remains stable, even when deleting windows. */
for (const Window *w : Window::IterateFromBack()) {
for (const Window *w : Window::IterateUnordered()) {
if (w->window_desc->flags & WDF_CONSTRUCTION) {
delete w;
}

49
src/window_gui.h
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@ -145,6 +145,7 @@ void DrawCaption(const Rect &r, Colours colour, Owner owner, TextColour text_col
/* window.cpp */
extern WindowBase *_z_front_window;
extern WindowBase *_z_back_window;
extern WindowBase *_first_window;
extern Window *_focused_window;
inline uint64 GetWindowUpdateNumber()
@ -291,6 +292,7 @@ enum TooltipCloseCondition {
struct WindowBase {
WindowBase *z_front; ///< The window in front of us in z-order.
WindowBase *z_back; ///< The window behind us in z-order.
WindowBase *next_window; ///< The next window in arbitrary iteration order.
WindowClass window_class; ///< Window class
virtual ~WindowBase() {}
@ -884,12 +886,18 @@ public:
template<class T>
using window_base_t = std::conditional_t<std::is_const<T>{}, WindowBase const, WindowBase>;
enum IterationMode {
IM_FROM_FRONT,
IM_FROM_BACK,
IM_ARBITRARY,
};
/**
* Iterator to iterate all valid Windows
* @tparam T Type of the class/struct that is going to be iterated
* @tparam Tfront Wether we iterate from front
* @tparam Tmode Iteration mode
*/
template <class T, bool Tfront>
template <class T, IterationMode Tmode>
struct WindowIterator {
typedef T value_type;
typedef T *pointer;
@ -910,7 +918,23 @@ public:
private:
window_base_t<T> *w;
void Validate() { while (this->w != nullptr && this->w->window_class == WC_INVALID) this->Next(); }
void Next() { if (this->w != nullptr) this->w = Tfront ? this->w->z_back : this->w->z_front; }
void Next()
{
if (this->w != nullptr) {
switch (Tmode) {
case IM_FROM_FRONT:
this->w = this->w->z_back;
break;
case IM_FROM_BACK:
this->w = this->w->z_front;
break;
case IM_ARBITRARY:
this->w = this->w->next_window;
break;
}
}
}
};
/**
@ -918,11 +942,11 @@ public:
* @tparam T Type of the class/struct that is going to be iterated
* @tparam Tfront Wether we iterate from front
*/
template <class T, bool Tfront>
template <class T, IterationMode Tmode>
struct Iterate {
Iterate(window_base_t<T> *from) : from(from) {}
WindowIterator<T, Tfront> begin() { return WindowIterator<T, Tfront>(this->from); }
WindowIterator<T, Tfront> end() { return WindowIterator<T, Tfront>(nullptr); }
WindowIterator<T, Tmode> begin() { return WindowIterator<T, Tmode>(this->from); }
WindowIterator<T, Tmode> end() { return WindowIterator<T, Tmode>(nullptr); }
bool empty() { return this->begin() == this->end(); }
private:
window_base_t<T> *from;
@ -935,7 +959,7 @@ public:
* @return an iterable ensemble of all valid Window
*/
template <class T = Window>
static Iterate<T, false> IterateFromBack(window_base_t<T> *from = _z_back_window) { return Iterate<T, false>(from); }
static Iterate<T, IM_FROM_BACK> IterateFromBack(window_base_t<T> *from = _z_back_window) { return Iterate<T, IM_FROM_BACK>(from); }
/**
* Returns an iterable ensemble of all valid Window from front to back
@ -944,7 +968,16 @@ public:
* @return an iterable ensemble of all valid Window
*/
template <class T = Window>
static Iterate<T, true> IterateFromFront(window_base_t<T> *from = _z_front_window) { return Iterate<T, true>(from); }
static Iterate<T, IM_FROM_FRONT> IterateFromFront(window_base_t<T> *from = _z_front_window) { return Iterate<T, IM_FROM_FRONT>(from); }
/**
* Returns an iterable ensemble of all valid Window in an arbitrary order which is safe to use when deleting
* @tparam T Type of the class/struct that is going to be iterated
* @param from index of the first Window to consider
* @return an iterable ensemble of all valid Window
*/
template <class T = Window>
static Iterate<T, IM_ARBITRARY> IterateUnordered(window_base_t<T> *from = _first_window) { return Iterate<T, IM_ARBITRARY>(from); }
};
/**

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