mvp docs

docs/source/MVP_guidelines.rst

@@ -0,0 +1,108 @@
+
+.. _MVP_Guidelines:
+
+==========================
+Model-View-Presenter (MVP)
+==========================
+
+Overview
+========
+
+The Model-View-Presenter (MVP) pattern is a software design pattern
+that separates the structure of an application into three main components:
+Model, View, and Presenter. This separation enhances modularity, testability,
+and maintainability of the codebase.
+
+Components
+===========
+
+1. **Model:**
+   The Model represents the application's data and algorithm logic. It is
+   responsible for retrieving and manipulating data, as well as notifying the
+   Presenter of any changes. The Model is independent of both the View and the
+   Presenter.
+
+2. **View:**
+   The View is responsible for presenting the data to the user and receiving
+   user input. It remains passive and delegates user interactions to the Presenter.
+   The View does not contain any application logic and is only concerned with
+   displaying information to the user. Each View is associated with a single Presenter.
+
+3. **Presenter:**
+   The Presenter acts as an intermediary between the Model and the View. It
+   contains the application logic, responds to user input from the View, and
+   updates the Model accordingly. The Presenter also updates the View in response
+   to changes in the Model. This separation allows for easier testing and
+   maintenance of the application logic. There is only one Presenter for each View.
+
+Communication Flow
+===================
+
+1. User interacts with the View by triggering events.
+2. The View forwards user input events to the Presenter.
+3. The Presenter processes the events, updates the Model as needed, and
+   communicates changes back to the View.
+4. The View reflects the changes made by the Presenter.
+
+.. graphviz::
+
+    digraph mvp_flow {
+    rankdir=LR;
+
+    // Nodes
+    node [shape=box];
+    User [label="User" shape=circle width=.15];
+    View [label="View"];
+    Presenter [label="Presenter"];
+    Model [label="Model"];
+
+    // User to View
+    User -> View [label="User Interaction" arrowhead="open"];
+
+    // View to Presenter
+    View -> Presenter [label="User Input Events"];
+
+    // Presenter to Model
+    Presenter -> Model [label="Update Model"];
+
+    // Model to Presenter
+    Model -> Presenter [label="Notify Changes"];
+
+    // Presenter to View
+    Presenter -> View [label="Update View"];
+
+    // View to User
+    View -> User [label="View Updates" arrowhead="open"];
+    }
+
+
+
+Advantages
+==========
+
+1. **Separation of Responsibility:**
+   MVP separates the application into distinct components, promoting a clean and
+   modular code structure. This separation makes it easier to manage and test each
+   component independently.
+
+2. **Testability:**
+   Since the application logic resides in the Presenter and Algorithms in the Model,
+   it is easier to unit test without involving the UI components. This facilitates
+   a more effective testing strategy.
+
+3. **Maintainability:**
+   The clear separation of responsibilities makes the codebase more maintainable.
+   Changes in one component, such as the View or Model, do not directly impact the
+   others.
+
+Usage
+======
+
+MVP is commonly used in GUI-based applications where a clear separation between
+the user interface and business logic is crucial for maintainability and
+testability.
+
+.. note::
+
+   MVP is an evolution of the Model-View-Controller (MVC) pattern, addressing some of its limitations,
+   especially in terms of testing and code organization.

docs/source/conf.py

@@ -31,6 +31,7 @@
     "sphinx.ext.intersphinx",
     "sphinx.ext.viewcode",
     "sphinx.ext.coverage",
+    "sphinx.ext.graphviz",
 ]
 
 autodoc_mock_imports = [

docs/source/index.rst

@@ -46,3 +46,4 @@ Contents
    getting_started
    reference
    GUI_standards
+   MVP_guidelines