Framelet Prototype 2016 using Mojo IPC

components/framelet/common/framelet.mojom

+// Copyright 2015 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.
+
+module framelet.mojom;
+
+import "components/mus/public/interfaces/input_events.mojom";
+import "components/mus/public/interfaces/surface_id.mojom";
+import "ui/mojo/geometry/geometry.mojom";
+
+enum ResourceUsageLevel {
+  LOW = 0,
+  MEDIUM,
+  HIGH,
+  CRITICAL,
+  MAX_VALUE
+};
+
+enum FocusType {
+  NONE,
+  FORWARD,
+  BACKWARD,
+  UP,
+  DOWN,
+  LEFT,
+  RIGHT,
+  MOUSE,
+  PAGE,
+  LAST
+};
+
+struct SurfaceId {
+  uint32 local;
+  uint32 id_namespace;
+};
+
+enum ValueType {
+  BOOLEAN,
+  INTEGER,
+  STRING
+};
+
+struct StringValue {
+  string value;
+};
+
+struct IntegerValue {
+  uint32 value;
+};
+
+struct BooleanValue {
+  bool value;
+};
+
+struct Value {
+  ValueType type;
+  BooleanValue? boolean_value;
+  IntegerValue? integer_value;
+  StringValue? string_value;
+};
+
+interface Framelet {
+  Attach(FrameletClient client, map<string, Value> params);
+
+  Destroy();
+
+  ForwardInput(array<uint8> event);
+
+  Resize(mojo.Size new_size);
+
+  SetFocus(bool focused, FocusType focus_type);
+
+  SetVisible(bool visible);
+};
+
+interface FrameletClient {
+  ReportMemoryUsage(ResourceUsageLevel usage_level);
+
+  SetChildFrameSurface(mus.mojom.SurfaceId surface_id,
+                       mojo.Size frame_size,
+                       float scale_factor);
+};
+
+interface FrameletFactory {
+  Create(Framelet& framelet, map<string, Value> params);
+};