# Browser items

All the browser items may have a description, a stereotype (sometime without special meaning for BOUML, the default stereotypes may be defined for some types of item), and user properties. The browser item's stereotype may be showed/hidden through the Miscellaneous menu.

The bold font is used when an item is modifiable, an item is read-only when you do not have the write permission for the file(s) supporting it (see Project files). The system items supporting of the plug-out's API (for instance UmlBaseClass) are also read-only, this help you to not modify them to have a chance to remain compatible with the future versions.

When you create a new item, this last is placed at the end of the items of the same container, using the left button of the mouse as for a drag&drop it is possible to move an item to place it in an other container (except for the relations) or to change the items order. The drag & drop from the browser to an opened diagram is also possible when it is legal. When you drag an item it1 on a non-container item it2, it1 will be placed just after it2 at the same level. When you drag an item it1 on a container item it2 which may contain it1, it1 will be the first it2's children, in case it1 may be moved in it2 or after it2, Bouml ask you to choose.

Multiple selection is not allowed in the browser using the classical way, I consider that it is to simple to loose a multiple selection through a wrong mouse click. I replace classical multiple selection with the possibility to mark browser items through the menu appearing on a right mouse click, or through a control left mouse click. Marked items are written on a red background, and may be moved or duplicated (under condition) :

On the example above at the menu appearing on the use case view propose to mark it, to move the marked items into it, to move the marked items after it (in this case only the order of the items is modified) or to duplicate the marked items into it. The menu is context dependent, for a marked item it proposes to unmark the item, or to unmark all the marked items, and for instance for a component view it just proposes to mark it because the two marked diagrams cannot be placed into the component view or after (the marked diagrams cannot be placed into the package containing the component view).

When you remove an item from the model, the icon contains a red cross (for instance ), note that a deleted item is never saved when you save your project, but it may be undeleted with or without its children until you close the project. Sometimes it is not possible to delete an items because this one contains read-only items or is referenced by a read-only relation.

A double mouse click on an item allows to edit it except when the item have an associated diagram, in this case the diagram is showed. The other mouse buttons show a menu depending on the item kind.

control s is a shortcut to save the project

control d and suppr are a shortcut to delete the selected item

### Package

A Package (may be the project itself) is first something like a directory and may contain :

- packages

- use case views

- class views

- component views

- deployment views

- relations

A package may indicate where the code must be produced by the generator for each language, and may specify the C++ namespace / Java package / Idl module. A generator producing code for an artifact looks at the package containing the deployment view where is the artifact to get these information.

Refer to package for more information.

### Use case view

A use case view may contain :

- sub use case view

- use cases

- classes, an actor is just a class having the stereotype actor

- use case diagrams

- object diagrams

- sequence diagrams

- collaboration diagrams

Refer to use case view for more information.

### Class view

A class view is used to design the classes and may contain :

- classes

- states

- activities

- class diagrams

- object diagrams

- sequence diagrams

- collaboration diagrams

Refer to class view for more information.

### Component view

A component view may contains :

- components

- component diagrams

Refer to component view for more information.

### Deployment view

A deployment view may contains :

- nodes

- artifact

- deployment diagrams

Refer to deployment view for more information.

### Use case

A use case is ... a use case, but also a browser container and may contain :

- use cases

- actors

- classes

- relations

- use case diagrams

- object diagrams

- sequence diagrams

- collaboration diagrams

Refer to use case for more information.

### Class

A class is the support to define a class (!), an interface, an enum, an union, a struct, an exception, or a valuetype, depending on the language. The stereotype specify what a class is, the way a stereotype is translated for each language may be specified through the generation settings

Of course a class is also a browser container and may contain :

- (nested) classes

- relations

- attributes

- operations

- extra members

The order of the class's sub-items is very important because it is followed by the C++/Java/Idl generators.

Refer to class for more information.

### Relation

They are two kinds of relation : the relations between classes whose are considered by the source code generators, and the relations between the other items (inheritance and dependency)

To add a relation you have to use a diagram (obviously the relation drawing may be deleted just after !), it is not possible to add a relation through the browser. It is also not possible to move a relation out of the items containing it.

The icon in the browser indicate if a relation between classes is public (+), protected (#) or private (-). The protected visibility is translated in private in Idl.

A bi-directional relation between classes is supported by two items in the browser.

Generally the stereotype of a relation between classes is used to specify how a relation with a multiplicity different than 1 is translated in each language (refer to default stereotype and generation settings), for instance to produce a vector. The friend stereotype is a special case for a dependency and is used to produce a C++ friend declaration.

Refer to relation for more information.

### Attribute

There is not restriction for the attributes, an attribute's type may be a class or an int for instance.

The icon in the browser indicate if the attribute is public (+), protected (#) or private (-). The protected visibility is translated in private in Idl.

Refer to attribute for more information.

### Operation

The icon in the browser indicate if the operation is public (+), protected (#) or private (-). The protected visibility is translated in private in Idl.

Refer to operation for more information.

### Extra member

An extra member is an alien allowing you to specify directly the generated code for each language. This allows to manage non UML items, for instance C++ pre-processor directives, Java attribute initializations etc ...

Refer to extra member for more information.

### State

A state represents a state machine, a sub machine, a composite state or a simple state

A state may contains :

- state diagrams

- sub-states

- regions

- pseudo states

- transitions

- actions

- receive signals (an action with the stereotype receive-signal)

- send signals (an action with the stereotype send-signal)

Refer to state and for more information.

### Pseudo State

A pseudo state may be :

final state (for reasons of simplification)

initial

deep history

shallow history

join

fork

junction

choice

entry point

exit point

terminate

A pseudo state may contains :

- transitions

Refer to pseudo state for more information.

### Activity

An activity may contains:

- activity diagrams

- parameters

- activity nodes

- expansion and interruptible activity regions

Refer to activity for more information.

### Expansion region

An expansion region may contains :

- expansion and interruptible activity sub regions

- expansion nodes

- control nodes

- action nodes

- object nodes

Refer to region for more information

### Interruptible activity region

An interruptible activity region may contains :

- expansion and interruptible activity sub regions

- control nodes

- action nodes

- object nodes

Refer to region for more information

### Activity node

An activity node may be :

activity action (opaque, accept event, accept timer event, read variable value, clear variable value, write variable value, add variable value, remove variable value, call behavior, call operation, send object, send signal, broadcast signal, unmarshall or value specification)

object nodes

control nodes ( initial, final, flow final, merge, decision, fork, join)

Activity nodes may contain :

- flow

- pins (action only)

Refer to activity action, object node and control node for more information.

### Component

A component is an autonomous unit with well defined interfaces that is replaceable within its environment.

A component may contains :

- relations

- components

Refer to component for more information.

### Artifact

Artifacts are basically used to produce source file(s) when the stereotype is source, or to specified how libraries or an executable are composed.

A source artifact is (potentially) associated to classes, but you may directly give its source(s) contain for instance to define the C++ main function. The other artifacts may be associated to artifacts.

Note : In the old release of BOUML (up to the 1.5.1), the behavior of the artifact was defined at the component level.

An artifact may contains :

- relations

Refer to artifact for more information.

### Node

To specify how the deployment is made, a node may represent a CPU, a device etc ...

Refer to node for more information.

### Use case diagram

Refer to use case diagram for more information.

### Sequence diagram

Refer to sequence diagram for more information.

### Collaboration diagram

Refer to collaboration diagram for more information.

### Class diagram

Refer to class diagram for more information.

### Activity diagram

Refer to activity diagram for more information

### State diagram

Refer to state diagram for more information

### Object diagram

Refer to object diagram for more information

### Component diagram

Refer to component diagram for more information.

### Deployment diagram

Refer to deployment diagram for more information.

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