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(svn r17922) -Fix [FS#3291]: crash when closing NewGRF parameter window with no NewGRF selected

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rubidium 2009-10-31 14:53:19 +00:00
parent 617e7966f9
commit 86fd0c0bce
3 changed files with 13 additions and 7 deletions
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3
src/newgrf_gui.cpp
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@ -749,6 +749,7 @@ struct NewGRFWindow : public Window {
this->sel = newsel;
this->preset = -1;
this->InvalidateData();
this->DeleteChildWindows(WC_QUERY_STRING); // Remove the parameter query window
break;
}
@ -791,6 +792,8 @@ struct NewGRFWindow : public Window {
uint i = (pt.y - this->GetWidget<NWidgetBase>(SNGRFS_FILE_LIST)->pos_y) / this->resize.step_height + this->vscroll.GetPosition();
for (c = this->list; c != NULL && i > 0; c = c->next, i--) {}
if (this->sel != c) this->DeleteChildWindows(WC_QUERY_STRING); // Remove the parameter query window
this->sel = c;
this->InvalidateData();

15
src/window.cpp
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@ -645,12 +645,14 @@ void Window::ReInit()
/** Find the Window whose parent pointer points to this window
* @param w parent Window to find child of
* @return a Window pointer that is the child of w, or NULL otherwise */
static Window *FindChildWindow(const Window *w)
* @param wc Window class of the window to remove; WC_INVALID if class does not matter
* @return a Window pointer that is the child of w, or NULL otherwise
*/
static Window *FindChildWindow(const Window *w, WindowClass wc)
{
Window *v;
FOR_ALL_WINDOWS_FROM_BACK(v) {
if (v->parent == w) return v;
if ((wc == WC_INVALID || wc == v->window_class) && v->parent == w) return v;
}
return NULL;
@ -658,13 +660,14 @@ static Window *FindChildWindow(const Window *w)
/**
* Delete all children a window might have in a head-recursive manner
* @param wc Window class of the window to remove; WC_INVALID if class does not matter
*/
void Window::DeleteChildWindows() const
void Window::DeleteChildWindows(WindowClass wc) const
{
Window *child = FindChildWindow(this);
Window *child = FindChildWindow(this, wc);
while (child != NULL) {
delete child;
child = FindChildWindow(this);
child = FindChildWindow(this, wc);
}
}

2
src/window_gui.h
View File

@ -621,7 +621,7 @@ public:
void DrawViewport() const;
void DrawSortButtonState(int widget, SortButtonState state) const;
void DeleteChildWindows() const;
void DeleteChildWindows(WindowClass wc = WC_INVALID) const;
void SetDirty() const;
void ReInit();