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Engineering LibreTexts

11.9: Subviews

  • Page ID
    45940
  • \( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}} } \) \( \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash {#1}}} \)\(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\) \(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\)\(\newcommand{\AA}{\unicode[.8,0]{x212B}}\)

    A node is a view in itself. This allows for a graph to be embedded in any node. The embedded view is physically bounded by the encapsulating node. The embedding is realized via the keywords nodes:forEach: and node:forIt:.

    The following example approximates the dependencies between methods by linking methods that may call each other. A method m1 is connected to a method m2 if m1 contains a reference to the selector #m2. This is a simple but effective way to see the dependencies between methods. Consider:

    view nodes: ROShape withAllSubclasses forEach: [:cls |
        view nodes: cls methods.
        view edges: cls methods from: #yourself toAll: [ :cm | cls methods select: [ :rcm | cm
            messages anySatisfy: [:s | rcm selector == s ] ] ].
        view treeLayout
    ].
    view interaction action: #browse.
    view edgesFrom: #superclass.
    view treeLayout.
    

    A subview contains its own layout. Interactions and shapes defined in a subview are not accessible from a nesting node (Figure \(\PageIndex{1}\)).

    A visualization with a subview.
    Figure \(\PageIndex{1}\): Large boxes are classes. Inner boxes are methods. Edges show a possible invocation between the two.

    This page titled 11.9: Subviews is shared under a CC BY-SA 3.0 license and was authored, remixed, and/or curated by Alexandre Bergel, Damien Cassou, Stéphane Ducasse, Jannik Laval (Square Bracket Associates) via source content that was edited to the style and standards of the LibreTexts platform; a detailed edit history is available upon request.