# eric4.Helpviewer.HelpDocsInstaller

Module implementing a thread class populating and updating the QtHelp documentation database.

### Global Attributes

None

### Classes

HelpDocsInstaller | Class implementing the worker thread populating and updating the QtHelp documentation database.

### Functions

None

## HelpDocsInstaller

Class implementing the worker thread populating and updating the QtHelp documentation database.

#### Signals

docsInstalled(bool)
  emitted after the installation has finished
errorMessage(const QString&)
  emitted, if an error occurred during the installation of the documentation

### Derived from

QThread

### Class Attributes

None

### Methods

HelpDocsInstaller | Constructor
__installEric4Doc | Private method to install/update the eric4 help documentation.
__installQtDoc | Private method to install/update a Qt help document.
installDocs | Public method to start the installation procedure.
run | Protected method executed by the thread.
stop | Public slot to stop the installation procedure.

#### HelpDocsInstaller (Constructor)

HelpDocsInstaller(collection)

Constructor

collection
  full pathname of the collection file (QString)

#### HelpDocsInstaller.__installEric4Doc

__installEric4Doc(engine)

Private method to install/update the eric4 help documentation.

engine
  reference to the help engine (QHelpEngineCore)

Returns:
  flag indicating success (boolean)

#### HelpDocsInstaller.__installQtDoc

__installQtDoc(name, engine)

Private method to install/update a Qt help document.

name
  name of the Qt help document (string or QString)
engine
  reference to the help engine (QHelpEngineCore)

Returns:
  flag indicating success (boolean)

#### HelpDocsInstaller.installDocs

installDocs()

Public method to start the installation procedure.

#### HelpDocsInstaller.run

run()

Protected method executed by the thread.

#### HelpDocsInstaller.stop

stop()

Public slot to stop the installation procedure.

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