Define
What must every member of this family truthfully guarantee?
THREE-GEN DESIGN PATTERN / SHAPE PROJECT
One object.
Three degrees of knowing.
Architecture establishes what can be guaranteed. A generic implementation makes it useful. Project authority decides what it means here.
THE RULE
Specificity accumulates.
Architecture does not.
RESPONSIBILITY PLACEMENT
Each generation is complete at its own level.
Realize
What is the useful generic form, independent of any one project?
Authorize
What does this generic thing become when the project finally gives it meaning?
Put a decision in the earliest generation that can honestly own it — and no earlier.
THE PAGE IS THE PROOF
Not diagram theater.
The explorer and the control inside it are real Web Component inheritance chains. Gen 3 does not repaint an unrelated widget; it inherits the actual behavior below it.
GEN 1
→
ShapeElementGEN 2
→
ThreeGenExplorerGEN 3
ShapeThreeGenExplorerGEN 1
→
BaseInputGEN 2
→
TextBoxGEN 3
ShapePromptBox