#include "ui/accessibility/ax_tree_update.h"
+#include "base/containers/hash_tables.h"
+#include "base/strings/string_number_conversions.h"
+
namespace ui {
AXTreeUpdate::AXTreeUpdate() : node_id_to_clear(0) {
AXTreeUpdate::~AXTreeUpdate() {
}
+std::string AXTreeUpdate::ToString() const {
+ std::string result;
+ if (node_id_to_clear != 0) {
+ result += "AXTreeUpdate: clear node " +
+ base::IntToString(node_id_to_clear) + "\n";
+ }
+
+ // The challenge here is that we want to indent the nodes being updated
+ // so that parent/child relationships are clear, but we don't have access
+ // to the rest of the tree for context, so we have to try to show the
+ // relative indentation of child nodes in this update relative to their
+ // parents.
+ base::hash_map<int32, int> id_to_indentation;
+ for (size_t i = 0; i < nodes.size(); ++i) {
+ int indent = id_to_indentation[nodes[i].id];
+ result += std::string(2 * indent, ' ');
+ result += nodes[i].ToString() + "\n";
+ for (size_t j = 0; j < nodes[i].child_ids.size(); ++j)
+ id_to_indentation[nodes[i].child_ids[j]] = indent + 1;
+ }
+
+ return result;
+}
+
} // namespace ui