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Bookmarks: rollback delete item data procedures: reading wxWidgets labyrinthine code more carefully

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item data is properly deleted by Delete or DeleteChildren. On the other hand, SetItemData simply overwrites the pointer,
so take care or releasing ressources there
This commit is contained in:
vsonnier 2017-03-04 09:02:15 +01:00
parent b30f9e9bbb
commit 7bab9588e1
2 changed files with 9 additions and 60 deletions
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66
src/forms/Bookmark/BookmarkView.cpp
View File

@ -341,7 +341,7 @@ void BookmarkView::doUpdateActiveList() {
TreeViewItem *prevSel = itemToTVI(m_treeView->GetSelection());
// Actives
DeleteChildrenOfItem(activeBranch);
m_treeView->DeleteChildren(activeBranch);
bool activeExpandState = expandState["active"];
bool searchState = (searchKeywords.size() != 0);
@ -385,7 +385,7 @@ void BookmarkView::doUpdateActiveList() {
bool rangeExpandState = searchState?false:expandState["range"];
BookmarkRangeList bmRanges = wxGetApp().getBookmarkMgr().getRanges();
DeleteChildrenOfItem(rangeBranch);
m_treeView->DeleteChildren(rangeBranch);
for (auto &re_i: bmRanges) {
TreeViewItem* tvi = new TreeViewItem();
@ -415,7 +415,7 @@ void BookmarkView::doUpdateActiveList() {
// Recents
BookmarkList bmRecents = wxGetApp().getBookmarkMgr().getRecents();
DeleteChildrenOfItem(recentBranch);
m_treeView->DeleteChildren(recentBranch);
for (auto &bmr_i: bmRecents) {
TreeViewItem* tvi = new TreeViewItem();
@ -1174,7 +1174,7 @@ void BookmarkView::onRemoveActive( wxCommandEvent& /* event */ ) {
return;
}
doRemoveActive(curSel->demod);
DeleteSingleItem(m_treeView->GetSelection());
m_treeView->Delete(m_treeView->GetSelection());
}
}
@ -1207,7 +1207,7 @@ void BookmarkView::onActivateRecent( wxCommandEvent& /* event */ ) {
if (curSel && curSel->type == TreeViewItem::TREEVIEW_ITEM_TYPE_RECENT) {
activateBookmark(curSel->bookmarkEnt);
DeleteSingleItem(m_treeView->GetSelection());
m_treeView->Delete(m_treeView->GetSelection());
wxGetApp().getBookmarkMgr().removeRecent(curSel->bookmarkEnt);
wxGetApp().getBookmarkMgr().updateActiveList();
}
@ -1223,7 +1223,7 @@ void BookmarkView::onRemoveRecent ( wxCommandEvent& /* event */ ) {
if (curSel && curSel->type == TreeViewItem::TREEVIEW_ITEM_TYPE_RECENT) {
DeleteSingleItem(m_treeView->GetSelection());
m_treeView->Delete(m_treeView->GetSelection());
wxGetApp().getBookmarkMgr().removeRecent(curSel->bookmarkEnt);
wxGetApp().getBookmarkMgr().updateActiveList();
}
@ -1423,7 +1423,7 @@ void BookmarkView::onTreeEndDrag( wxTreeEvent& event ) {
} else if (dragItem && dragItem->type == TreeViewItem::TREEVIEW_ITEM_TYPE_RECENT) { // Recent -> Group Item
doBookmarkRecent(tvi->groupName, dragItem->bookmarkEnt);
DeleteSingleItem(dragItemId);
m_treeView->Delete(dragItemId);
} else if (dragItem && dragItem->type == TreeViewItem::TREEVIEW_ITEM_TYPE_BOOKMARK) { // Bookmark -> Group Item
doMoveBookmark(dragItem->bookmarkEnt, tvi->groupName);
}
@ -1432,7 +1432,7 @@ void BookmarkView::onTreeEndDrag( wxTreeEvent& event ) {
doBookmarkActive(tvi->groupName, dragItem->demod);
} else if (dragItem && dragItem->type == TreeViewItem::TREEVIEW_ITEM_TYPE_RECENT) { // Recent -> Same Group
doBookmarkRecent(tvi->groupName, dragItem->bookmarkEnt);
DeleteSingleItem(dragItemId);
m_treeView->Delete(dragItemId);
} else if (dragItem && dragItem->type == TreeViewItem::TREEVIEW_ITEM_TYPE_BOOKMARK) { // Bookmark -> Same Group
doMoveBookmark(dragItem->bookmarkEnt, tvi->groupName);
}
@ -1595,59 +1595,11 @@ BookmarkRangeEntryPtr BookmarkView::makeActiveRangeEntry() {
}
void BookmarkView::DeleteSingleItem(wxTreeItemId item) {
//free the associated TreeItemData*, because contrary to doc,
// the associated data is not freed automatically by m_treeView->Delete(item) !
// this is also needed to decrement the ref count of shared_ptr within TreeViewItem,
//and prevent further memory leaks.
// (see source of vxWidgets 3.1)
TreeViewItem *itemData = itemToTVI(item);
if (itemData != NULL) {
delete itemData;
m_treeView->SetItemData(item, NULL);
}
m_treeView->Delete(item);
}
void BookmarkView::DeleteChildrenOfItem(wxTreeItemId item) {
FreeItemDataOfItemRecursively(item);
//this delete is naturally recursive.
m_treeView->DeleteChildren(item);
}
void BookmarkView::FreeItemDataOfItemRecursively(wxTreeItemId item) {
wxTreeItemIdValue cookieSearch;
wxTreeItemId currentChild = m_treeView->GetFirstChild(item, cookieSearch);
while (currentChild.IsOk()) {
TreeViewItem *itemData = itemToTVI(currentChild);
if (itemData != NULL) {
delete itemData;
m_treeView->SetItemData(currentChild, NULL);
}
//Search children and Free item data recursively.
FreeItemDataOfItemRecursively(currentChild);
currentChild = m_treeView->GetNextChild(item, cookieSearch);
} //end while
}
void BookmarkView::SetTreeItemData(const wxTreeItemId& item, wxTreeItemData *data) {
TreeViewItem *itemData = itemToTVI(item);
if (itemData != NULL) {
//cleanup previous data, if any
delete itemData;
}

3
src/forms/Bookmark/BookmarkView.h
View File

@ -150,9 +150,6 @@ protected:
TreeViewItem *itemToTVI(wxTreeItemId item);
void SetTreeItemData(const wxTreeItemId& item, wxTreeItemData *data);
void DeleteSingleItem(wxTreeItemId item);
void DeleteChildrenOfItem(wxTreeItemId item);
void FreeItemDataOfItemRecursively(wxTreeItemId item);
MouseTracker mouseTracker;