Introduce the new validation graph widget

[hgonomeg]

The new validation graph widget (being developed under #31) needs to be plugged into the codebase.

Possible approaches

1. Use normal menu items powered by a collection of GMenus that get updated whenever a model gets added/deleted.
2. Build a new dialog ("Show validation graph" or something like that) with two comboboxes: one for choosing the graph type and another one to choose the model.
3. Create a special expandable/resizable pane for managing validation graphs. It would have a combobox to choose the model and a grid of checkbuttons to select which graph types should be displayed.

Third is what we go with.

Tasks

• [x] Choose approach for replacing dynamic-menus
• [ ] Unify representation of graph types (ideally single enum, no strings [or a single string-to-enum function])
  • [x] Add new enum
  • [ ] Possibly remove the old one
• [x] Implement the chosen replacement of dynamic-menus
  • [x] Add the validation graphs pane
  • [x] Add the internal layout of the pane - combobox and space for checkbuttons
  • [x] Implement choosing models from the combobox
  • [x] Add check buttons
  • [x] Implement the check buttons' logic
  • [x] Remove the validation graph-related menu items from the UI
• [ ] Remove dynamic-menus.{cc,hh}
• [ ] Add the graph widget code to coot directly [copy from test-validation/ (preferably after #31 is closed)]
• [ ] Rework graph presentation - remove the dialog and make an overlay with tabs
  • [x] Add the overlay to the UI
  • [x] Implement tab management
  • [ ] Implement showing the graph widget in tabs' content
  • [ ] Remove the old dialog
• [ ] Rework how graphs are stored and managed in graphics_info_t
  • [x] Use std::map for storing any widgets/graphs.
  • [ ] Obtain + use a new unified graph-type-agnostic graph data representation type
  • [ ] Adjust the widget to the requirements
  • [x] Use std::map to store graph data
  • [ ] Adapt code responsible for computing validation data for all graph types
  • [x] Rewrite validation graph creation
  • [ ] Rewrite update_validation_graphs()
  • [ ] Clean up
  • [x] Adjust after receiving feedback
  • [x] Make the control UI a pop-up dialog, not a pane
  • [x] Remove the tabs and add some form of chain-selection [combobox?]
• [ ] Test thoroughly

[hgonomeg]

UI design illustration:

[hgonomeg]

update_validation_graphs() corresponds to on_graphed_model_updated()

[hgonomeg]

Progress demo:

[hgonomeg]

34 got merged into the validation-graphs working branch (https://github.com/hgonomeg/coot/tree/validation-graphs).

This issue can now be renamed from "Prepare for introducing the new validation graph widget" to "Introduce the new validation graph widget" The validation-graphs branch is from now on the common development branch for both #33 and #31

[hgonomeg]

Updated:

[hgonomeg]

Validation graphs have been introduced by Paul and this issue can be considered closed. Remaining cleanup work can be continued here: #40