X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fview%2Frowitemowner.h;h=4b25a580da685bf6bd8de62ff3d3167db72612bc;hp=d961d6b9eeb9098ef0f4f271ada681fabe8c6baf;hb=a5d93c27b5bd6b95000e29c6cddac56ab254b289;hpb=18f7104f875a71bceeb152398b682737528a4ad7

diff --git a/pv/view/rowitemowner.h b/pv/view/rowitemowner.h
index d961d6b9..4b25a580 100644
--- a/pv/view/rowitemowner.h
+++ b/pv/view/rowitemowner.h
@@ -24,6 +24,8 @@
 #include <memory>
 #include <vector>
 
+#include "rowitemiterator.h"
+
 namespace pv {
 
 class SigSession;
@@ -35,6 +37,11 @@ class View;
 
 class RowItemOwner
 {
+public:
+	typedef std::vector< std::shared_ptr<RowItem> > item_list;
+	typedef RowItemIterator<RowItemOwner, RowItem> iterator;
+	typedef RowItemIterator<const RowItemOwner, RowItem> const_iterator;
+
 public:
 	/**
 	 * Returns the session of the onwer.
@@ -61,10 +68,61 @@ public:
 	/**
 	 * Returns a list of row items owned by this object.
 	 */
-	virtual std::vector< std::shared_ptr<RowItem> > child_items() const = 0;
+	virtual item_list& child_items();
+
+	/**
+	 * Returns a list of row items owned by this object.
+	 */
+	virtual const item_list& child_items() const;
+
+	/**
+	 * Clears the list of child items.
+	 */
+	void clear_child_items();
+
+	/**
+	 * Adds a child item to this object.
+	 */
+	void add_child_item(std::shared_ptr<RowItem> item);
+
+	/**
+	 * Removes a child item from this object.
+	 */
+	void remove_child_item(std::shared_ptr<RowItem> item);
+
+	/**
+	 * Returns a depth-first iterator at the beginning of the child RowItem
+	 * tree.
+	 */
+	iterator begin();
+
+	/**
+	 * Returns a depth-first iterator at the end of the child RowItem tree.
+	 */
+	iterator end();
+
+	/**
+	 * Returns a constant depth-first iterator at the beginning of the
+	 * child RowItem tree.
+	 */
+	const_iterator begin() const;
+
+	/**
+	 * Returns a constant depth-first iterator at the end of the child
+	 * RowItem tree.
+	 */
+	const_iterator end() const;
+
+	/**
+	 * Computes the vertical extents of the contents of this row item owner.
+	 * @return A pair containing the minimum and maximum y-values.
+	 */
+	std::pair<int, int> v_extents() const;
 
-protected:
 	virtual void update_viewport() = 0;
+
+private:
+	item_list _items;
 };
 
 } // view