C# Class AmazonScrape.SearchManager

Manages the logical workflow of the application. Creates and deploys PageManagers. Returns WorkProgress object to report status and successful results.

Inheritance: System.ComponentModel.BackgroundWorker

Show file Open project: ThomasRush/AmazonScrape Class Usage Examples

Public Methods

Method	Description
GetPercentComplete ( ) : int	Returns integer percentage of overall progress, based on the number of retrieved and validated results.
ResultReturned ( object obj, ProgressChangedEventArgs args ) : void	Called by the PageManagers whenever they have a result. Returns the result back to the UI. Also checks and stops work if finished.
SearchManager ( SearchCriteria searchCriteria, int threadCount ) : System	Create and start work on a new search. Spawns PageManagers.
WorkerFinished ( object obj, RunWorkerCompletedEventArgs args ) : void	Called by PageManagers when their task is complete. If there is still work to be done, replaces the finished pageManager with a new one (creates a new thread) Exits if all work is complete.

Private Methods

Method	Description
HaltAllOngoingWork ( ) : void	Stops and disposes all PageManager threads and marks the main search as finished working
IsWorkFinished ( ) : bool	True if the search was cancelled, we've reached 100% of the desired number of results, or all of the threads are finished
OutputPageManagerStatus ( ) : void	Write PageManager WorkStatus to console for debugging
Work ( object sender, DoWorkEventArgs e ) : void	Sets up PageManager threads and begin search

Method Details

GetPercentComplete() public method

Returns integer percentage of overall progress, based on the number of retrieved and validated results.

public GetPercentComplete ( ) : int
return	int

ResultReturned() public method

Called by the PageManagers whenever they have a result. Returns the result back to the UI. Also checks and stops work if finished.

public ResultReturned ( object obj, ProgressChangedEventArgs args ) : void
obj	object	sender object
args	System.ComponentModel.ProgressChangedEventArgs	Result
return	void

SearchManager() public method

Create and start work on a new search. Spawns PageManagers.

public SearchManager ( SearchCriteria searchCriteria, int threadCount ) : System
searchCriteria	SearchCriteria	User-supplied search criteria
threadCount	int	Number of pages to search asynchronously
return	System

WorkerFinished() public method

Called by PageManagers when their task is complete. If there is still work to be done, replaces the finished pageManager with a new one (creates a new thread) Exits if all work is complete.

public WorkerFinished ( object obj, RunWorkerCompletedEventArgs args ) : void
obj	object	sender object
args	System.ComponentModel.RunWorkerCompletedEventArgs	Result
return	void