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Rewritten iterative category summarized lookup.

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This commit is contained in:
Martin Rotter 2014-01-02 22:07:02 +01:00
parent af254235f8
commit ec09fb69c2
1 changed files with 15 additions and 9 deletions
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24
src/core/feedsmodel.cpp
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@ -426,20 +426,26 @@ QHash<int, FeedsModelCategory*> FeedsModel::getAllCategories() {
return getCategories(m_rootItem);
}
// TODO: Rewrite this iterativelly (instead of
// current recursive implementation).
QHash<int, FeedsModelCategory*> FeedsModel::getCategories(FeedsModelRootItem *root) {
QHash<int, FeedsModelCategory*> categories;
QList<FeedsModelRootItem*> parents;
foreach (FeedsModelRootItem *child, root->childItems()) {
if (child->kind() == FeedsModelRootItem::Category) {
FeedsModelCategory *converted = static_cast<FeedsModelCategory*>(child);
parents.append(root->childItems());
// This child is some kind of category.
categories.insert(converted->id(), converted);
while (!parents.isEmpty()) {
FeedsModelRootItem *item = parents.takeFirst();
// Moreover, add all child categories of this category.
categories.unite(getCategories(converted));
if (item->kind() == FeedsModelRootItem::Category) {
// This item is category, add it to the output list and
// scan its children.
int category_id = item->id();
FeedsModelCategory *category = static_cast<FeedsModelCategory*>(item);
if (!categories.contains(category_id)) {
categories.insert(category_id, category);
}
parents.append(category->childItems());
}
}