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mojo/services/view_manager/test_change_tracker.h

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef SERVICES_VIEW_MANAGER_TEST_CHANGE_TRACKER_H_
+#define SERVICES_VIEW_MANAGER_TEST_CHANGE_TRACKER_H_
+
+#include <string>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "mojo/public/cpp/bindings/array.h"
+#include "third_party/mojo_services/src/geometry/public/interfaces/geometry.mojom.h"
+#include "third_party/mojo_services/src/view_manager/public/cpp/types.h"
+#include "third_party/mojo_services/src/view_manager/public/interfaces/view_manager.mojom.h"
+
+namespace view_manager {
+
+enum ChangeType {
+  CHANGE_TYPE_EMBED,
+  CHANGE_TYPE_EMBEDDED_APP_DISCONNECTED,
+  // TODO(sky): NODE->VIEW.
+  CHANGE_TYPE_NODE_BOUNDS_CHANGED,
+  CHANGE_TYPE_NODE_VIEWPORT_METRICS_CHANGED,
+  CHANGE_TYPE_NODE_HIERARCHY_CHANGED,
+  CHANGE_TYPE_NODE_REORDERED,
+  CHANGE_TYPE_NODE_VISIBILITY_CHANGED,
+  CHANGE_TYPE_NODE_DRAWN_STATE_CHANGED,
+  CHANGE_TYPE_NODE_DELETED,
+  CHANGE_TYPE_INPUT_EVENT,
+  CHANGE_TYPE_PROPERTY_CHANGED,
+  CHANGE_TYPE_DELEGATE_EMBED,
+};
+
+// TODO(sky): consider nuking and converting directly to ViewData.
+struct TestView {
+  TestView();
+  ~TestView();
+
+  // Returns a string description of this.
+  std::string ToString() const;
+
+  // Returns a string description that includes visible and drawn.
+  std::string ToString2() const;
+
+  mojo::Id parent_id;
+  mojo::Id view_id;
+  bool visible;
+  bool drawn;
+  std::map<std::string, std::vector<uint8_t>> properties;
+};
+
+// Tracks a call to ViewManagerClient. See the individual functions for the
+// fields that are used.
+struct Change {
+  Change();
+  ~Change();
+
+  ChangeType type;
+  mojo::ConnectionSpecificId connection_id;
+  std::vector<TestView> views;
+  mojo::Id view_id;
+  mojo::Id view_id2;
+  mojo::Id view_id3;
+  mojo::Rect bounds;
+  mojo::Rect bounds2;
+  int32_t event_action;
+  mojo::String creator_url;
+  mojo::String embed_url;
+  mojo::OrderDirection direction;
+  bool bool_value;
+  std::string property_key;
+  std::string property_value;
+};
+
+// Converts Changes to string descriptions.
+std::vector<std::string> ChangesToDescription1(
+    const std::vector<Change>& changes);
+
+// Convenience for returning the description of the first item in |changes|.
+// Returns an empty string if |changes| has something other than one entry.
+std::string SingleChangeToDescription(const std::vector<Change>& changes);
+
+// Convenience for returning the description of the first item in |views|.
+// Returns an empty string if |views| has something other than one entry.
+std::string SingleViewDescription(const std::vector<TestView>& views);
+
+// Returns a string description of |changes[0].views|. Returns an empty string
+// if change.size() != 1.
+std::string ChangeViewDescription(const std::vector<Change>& changes);
+
+// Converts ViewDatas to TestViews.
+void ViewDatasToTestViews(const mojo::Array<mojo::ViewDataPtr>& data,
+                          std::vector<TestView>* test_views);
+
+// TestChangeTracker is used to record ViewManagerClient functions. It notifies
+// a delegate any time a change is added.
+class TestChangeTracker {
+ public:
+  // Used to notify the delegate when a change is added. A change corresponds to
+  // a single ViewManagerClient function.
+  class Delegate {
+   public:
+    virtual void OnChangeAdded() = 0;
+
+   protected:
+    virtual ~Delegate() {}
+  };
+
+  TestChangeTracker();
+  ~TestChangeTracker();
+
+  void set_delegate(Delegate* delegate) {
+    delegate_ = delegate;
+  }
+
+  std::vector<Change>* changes() { return &changes_; }
+
+  // Each of these functions generate a Change. There is one per
+  // ViewManagerClient function.
+  void OnEmbed(mojo::ConnectionSpecificId connection_id,
+               const mojo::String& creator_url,
+               mojo::ViewDataPtr root);
+  void OnEmbeddedAppDisconnected(mojo::Id view_id);
+  void OnViewBoundsChanged(mojo::Id view_id,
+                           mojo::RectPtr old_bounds,
+                           mojo::RectPtr new_bounds);
+  void OnViewViewportMetricsChanged(mojo::ViewportMetricsPtr old_bounds,
+                                    mojo::ViewportMetricsPtr new_bounds);
+  void OnViewHierarchyChanged(mojo::Id view_id,
+                              mojo::Id new_parent_id,
+                              mojo::Id old_parent_id,
+                              mojo::Array<mojo::ViewDataPtr> views);
+  void OnViewReordered(mojo::Id view_id,
+                       mojo::Id relative_view_id,
+                       mojo::OrderDirection direction);
+  void OnViewDeleted(mojo::Id view_id);
+  void OnViewVisibilityChanged(mojo::Id view_id, bool visible);
+  void OnViewDrawnStateChanged(mojo::Id view_id, bool drawn);
+  void OnViewInputEvent(mojo::Id view_id, mojo::EventPtr event);
+  void OnViewSharedPropertyChanged(mojo::Id view_id,
+                                   mojo::String name,
+                                   mojo::Array<uint8_t> data);
+  void DelegateEmbed(const mojo::String& url);
+
+ private:
+  void AddChange(const Change& change);
+
+  Delegate* delegate_;
+  std::vector<Change> changes_;
+
+  DISALLOW_COPY_AND_ASSIGN(TestChangeTracker);
+};
+
+}  // namespace view_manager
+
+#endif  // SERVICES_VIEW_MANAGER_TEST_CHANGE_TRACKER_H_