static void PrepareAndSaveTabData(WindowInfo *win, TabData **tdata)
{
if (*tdata == NULL)
*tdata = new TabData();
if (win->tocLoaded) {
win->tocState.Reset();
HTREEITEM hRoot = TreeView_GetRoot(win->hwndTocTree);
if (hRoot)
UpdateTocExpansionState(win, hRoot);
}
if (win->AsChm())
win->AsChm()->RemoveParentHwnd();
SaveTabData(win, *tdata);
// prevent data from being deleted
win->ctrl = NULL;
win->watcher = NULL;
}
void UpdateTocExpansionState(TabInfo *tab, HWND hwndTocTree, HTREEITEM hItem)
{
while (hItem) {
TVITEM item;
item.hItem = hItem;
item.mask = TVIF_PARAM | TVIF_STATE;
item.stateMask = TVIS_EXPANDED;
TreeView_GetItem(hwndTocTree, &item);
DocTocItem *tocItem = item.lParam ? (DocTocItem *)item.lParam : nullptr;
if (tocItem && tocItem->child) {
// add the ids of toggled items to tocState
bool wasToggled = !(item.state & TVIS_EXPANDED) == tocItem->open;
if (wasToggled)
tab->tocState.Append(tocItem->id);
UpdateTocExpansionState(tab, hwndTocTree, TreeView_GetChild(hwndTocTree, hItem));
}
hItem = TreeView_GetNextSibling(hwndTocTree, hItem);
}
}
// Must be called when the active tab is losing selection.
// This happens when a new document is loaded or when another tab is selected.
void SaveCurrentTabInfo(WindowInfo* win) {
if (!win)
return;
int current = TabCtrl_GetCurSel(win->hwndTabBar);
if (-1 == current)
return;
CrashIf(win->currentTab != win->tabs.at(current));
TabInfo* tdata = win->currentTab;
CrashIf(!tdata);
if (win->tocLoaded) {
tdata->tocState.Reset();
HTREEITEM hRoot = win->tocTreeCtrl->GetRoot();
if (hRoot)
UpdateTocExpansionState(tdata, win->tocTreeCtrl, hRoot);
}
VerifyTabInfo(win, tdata);
// update the selection history
win->tabSelectionHistory->Remove(tdata);
win->tabSelectionHistory->Push(tdata);
}
