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LibGUI: Implement searching/jumping as you type in views

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This allows the user to start typing and highlighting and jumping
to a match in ColumnsView, IconView, TableView and TreeView if
the model supports it.
This commit is contained in:
Tom 2020-10-20 15:13:28 -06:00 • committed by Andreas Kling
parent 307f0bc778
commit 52a847a0eb
13 changed files with 244 additions and 19 deletions
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17
Libraries/LibGUI/Model.h
View file

@ -59,6 +59,13 @@ public:
InvalidateAllIndexes = 1 << 0,
};
enum MatchesFlag {
AllMatching = 0,
FirstMatchOnly = 1 << 0,
CaseInsensitive = 1 << 1,
MatchAtStart = 1 << 2,
};
virtual ~Model();
virtual int row_count(const ModelIndex& = ModelIndex()) const = 0;
@ -70,9 +77,11 @@ public:
virtual ModelIndex parent_index(const ModelIndex&) const { return {}; }
virtual ModelIndex index(int row, int column = 0, const ModelIndex& parent = ModelIndex()) const;
virtual bool is_editable(const ModelIndex&) const { return false; }
virtual bool is_searchable() const { return false; }
virtual void set_data(const ModelIndex&, const Variant&) { }
virtual int tree_column() const { return 0; }
virtual bool accepts_drag(const ModelIndex&, const StringView& data_type);
virtual Vector<ModelIndex, 1> matches(const StringView&, unsigned = MatchesFlag::AllMatching, const ModelIndex& = ModelIndex()) { return {}; }
virtual bool is_column_sortable([[maybe_unused]] int column_index) const { return true; }
virtual void sort([[maybe_unused]] int column, SortOrder) { }
@ -97,6 +106,14 @@ protected:
void for_each_view(Function<void(AbstractView&)>);
void did_update(unsigned flags = UpdateFlag::InvalidateAllIndexes);
static bool string_matches(const StringView& str, const StringView& needle, unsigned flags)
{
auto case_sensitivity = (flags & CaseInsensitive) ? CaseSensitivity::CaseInsensitive : CaseSensitivity::CaseSensitive;
if (flags & MatchAtStart)
return str.starts_with(needle, case_sensitivity);
return str.contains(needle, case_sensitivity);
}
ModelIndex create_index(int row, int column, const void* data = nullptr) const;
private: