---
name: "tlp_GraphObserver"
section: "3tulip"
platform: "linux"
package: "tulip-doc"
version: "3.1.2-2.3"
release: "Debian 6.0 (Squeeze)"
platforms: ["linux"]
url: "https://new.carta.tech/tlp_GraphObserver"
---

# tlp\_GraphObserver(3tulip)

Observer for Graph.

## NAME

tlp::GraphObserver -

**Observer** for **Graph**.

## SYNOPSIS

`#include <ObservableGraph.h>`

Inherited by **tlp::AcyclicTest**, **tlp::BiconnectedTest**, **tlp::ConnectedTest**` [private]`, **tlp::GraphProperty**, **tlp::OuterPlanarTest**` [private]`, **tlp::PlanarityTest**, **tlp::SimpleTest**, **tlp::TreeTest**` [private]`, and **tlp::TriconnectedTest**` [private]`.

### Public Member Functions

virtual **~GraphObserver** ()\
 virtual void **addNode** (**Graph** \*, const **node**)\
 virtual void **addEdge** (**Graph** \*, const **edge**)\
 virtual void **delNode** (**Graph** \*, const **node**)\
 virtual void **delEdge** (**Graph** \*, const **edge**)\
 virtual void **reverseEdge** (**Graph** \*, const **edge**)\
 virtual void **destroy** (**Graph** \*)\
 virtual void **addSubGraph** (**Graph** \*, **Graph** \*)\
 virtual void **delSubGraph** (**Graph** \*, **Graph** \*)\
 virtual void **addLocalProperty** (**Graph** \*, const std::string &)\
 virtual void **delLocalProperty** (**Graph** \*, const std::string &)\

## Detailed Description

**Observer** for **Graph**.

The **Observer** pattern is described in the lecture notes and pp293-304 of Design Patterns by Gamma, Helm, Johnson, and Vlissides. It is a framework for handling state dependency between observer and observed object.

## Constructor & Destructor Documentation

### virtual tlp::GraphObserver::~GraphObserver ()` [inline, virtual]`

## Member Function Documentation

### virtual void tlp::GraphObserver::addEdge (Graph \*, const edge)` [inline, virtual]`

### virtual void tlp::GraphObserver::addLocalProperty (Graph \*, const std::string &)` [inline, virtual]`

### virtual void tlp::GraphObserver::addNode (Graph \*, const node)` [inline, virtual]`

### virtual void tlp::GraphObserver::addSubGraph (Graph \*, Graph \*)` [inline, virtual]`

### virtual void tlp::GraphObserver::delEdge (Graph \*, const edge)` [inline, virtual]`

### virtual void tlp::GraphObserver::delLocalProperty (Graph \*, const std::string &)` [inline, virtual]`

### virtual void tlp::GraphObserver::delNode (Graph \*, const node)` [inline, virtual]`

### virtual void tlp::GraphObserver::delSubGraph (Graph \*, Graph \*)` [inline, virtual]`

### virtual void tlp::GraphObserver::destroy (Graph \*)` [inline, virtual]`

Reimplemented in **tlp::GraphProperty**.

### virtual void tlp::GraphObserver::reverseEdge (Graph \*, const edge)` [inline, virtual]`

## Author

Generated automatically by Doxygen for Tulip Graph Library from the source code.