third_party/fuchsia-sdk/fidl/fuchsia.modular/module/module_data.fidl

// Copyright 2017 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

library fuchsia.modular;

/// Information about a Module instance in a story.
table ModuleData {
    /// The URL of the Module binary.
    1: string module_url;

    /// The named path leading up to this Module instance. The last name in this
    /// array is the name by which the Module was started by the parent Module
    /// instance calling StartModule().
    2: vector<string> module_path;

    /// Contains the mapping of Mod parameter name to Link instances for this mod.
    3: ModuleParameterMap parameter_map;

    /// The way in which this Module instance was first started in the story,
    /// either by request from another Module instance (INTERNAL) or by request
    /// from outside the story (i.e. by suggestion from an agent - EXTERNAL).
    4: ModuleSource module_source;

    /// The `surface_relation` that was used to start this Module instance with.
    /// The same is used when re-inflating the Module instance when the story is
    /// resumed. A SurfaceRelation value of null represents an embedded Module
    /// instance (started by EmbedModule()) that is not managed by the story shell.
    5: SurfaceRelation surface_relation;

    /// True if this module was removed from its story either through
    /// ModuleController.Stop() or ModuleContext.RemoveSelfFromStory().
    6: bool module_deleted;

    /// The intent that was issued to start add this Module instance to the story.
    /// Some Module instances may have been added not by an Intent, for example as
    /// the initial module of a story. For those the field may be null.
    ///
    /// TODO(thatguy,mesch): This field should now always be set, so make it
    /// required once the framework is cleaned up enough to guarantee this
    /// statement.
    7: Intent intent;

    /// If true, this module was started by a parent module using
    /// ModuleContext.EmbedModule(), and its view is not managed by the
    /// StoryShell.
    8: bool is_embedded;

    /// Collection of user-defined key-value attributes that describe this surface (module).
    ///
    /// The `Annotation.value` field of each `Annotation` is always set.
    9: vector<Annotation>:MAX_ANNOTATIONS_PER_MODULE annotations;
};

enum ModuleSource {
    /// Module that was added to the story from within the story by another
    /// module using ModuleContext.AddModuleToStory() or
    /// ModuleContext.EmbedModule().
    INTERNAL = 0;

    /// Module that was added to the story from outside the story using
    /// PuppetMaster.
    EXTERNAL = 1;
};

struct ModuleParameterMap {
    vector<ModuleParameterMapEntry> entries;
};

struct ModuleParameterMapEntry {
    /// A null [name] is allowed for backwards compatibility with default links.
    /// TODO(thatguy); When no modules use null link names any more, make this
    /// required.
    string? name;
    LinkPath link_path;
};