Package 

Class ThumbnailRequestCoordinator

  • All Implemented Interfaces:
    com.mobwith.imgmodule.request.Request , com.mobwith.imgmodule.request.RequestCoordinator 
    
public class ThumbnailRequestCoordinator
 implements RequestCoordinator, Request

    A coordinator that coordinates two individual Requests that load a small thumbnail version of an image and the full size version of the image at the same time.

    • Method Summary

      Modifier and Type Method Description
      void setRequests(Request full, Request thumb)
      boolean canSetImage(Request request) Returns true if the request is either the request loading the full size image or if the requestloading the full size image has not yet completed.
      boolean canNotifyStatusChanged(Request request) Returns true if the request is the request loading the full size image and if neither the fullnor the thumbnail image have completed successfully.
      boolean canNotifyCleared(Request request) Returns {@code true} if the Request can clear the .
      boolean isAnyResourceSet() Returns true if any coordinated Request has successfully completed.
      void onRequestSuccess(Request request) Must be called when a Request coordinated by this object completes successfully.
      void onRequestFailed(Request request) Must be called when a Request coordinated by this object fails.
      RequestCoordinator getRoot() Returns the top most parent {@code RequestCoordinator}.
      void begin() Starts first the thumb request and then the full request.
      void clear() Prevents any bitmaps being loaded from previous requests, releases any resources held by thisrequest, displays the current placeholder if one was provided, and marks the request as havingbeen cancelled.
      void pause() Similar to clear for in progress requests (or portions of a request), but does nothingif the request is already complete.
      boolean isRunning() Returns true if this request is running and has not completed or failed.
      boolean isComplete() Returns true if the request has completed successfully.
      boolean isCleared() Returns true if the request has been cleared.
      boolean isEquivalentTo(Request o) Returns {@code true} if this Request is equivalent to the given Request (hasall of the same options and sizes).

      • Methods inherited from class com.mobwith.imgmodule.request.Request

        isEquivalentTo

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Method Detail

      • canSetImage

         boolean canSetImage(Request request)

        Returns true if the request is either the request loading the full size image or if the requestloading the full size image has not yet completed.

        Parameters:
        request - The Request requesting permission to display a bitmap.

      • canNotifyStatusChanged

         boolean canNotifyStatusChanged(Request request)

        Returns true if the request is the request loading the full size image and if neither the fullnor the thumbnail image have completed successfully.

        Parameters:
        request - The Request requesting permission to display a placeholder..

      • begin

         void begin()

        Starts first the thumb request and then the full request.

      • clear

         void clear()

        Prevents any bitmaps being loaded from previous requests, releases any resources held by thisrequest, displays the current placeholder if one was provided, and marks the request as havingbeen cancelled.

      • pause

         void pause()

        Similar to clear for in progress requests (or portions of a request), but does nothingif the request is already complete.

        Unlike clear, this method allows implementations to act differently on subpartsof a request. For example if a Request has both a thumbnail and a primary request and thethumbnail portion of the request is complete, this method allows only the primary portion ofthe request to be paused without clearing the previously completed thumbnail portion.

      • isRunning

         boolean isRunning()

        Returns true if this request is running and has not completed or failed.

      • isComplete

         boolean isComplete()

        Returns true if the request has completed successfully.

      • isCleared

         boolean isCleared()

        Returns true if the request has been cleared.

      • isEquivalentTo

         boolean isEquivalentTo(Request o)

        Returns {@code true} if this Request is equivalent to the given Request (hasall of the same options and sizes).

        This method is identical to equals except that it's specific to Request subclasses. We do not use equals directly because wetrack Requests in collections like java.util.Set and it's perfectly legitimateto have two different Request objects for two different s (for example). Using a similar but different methodlet's us selectively compare Request objects to each other when it's useful in specificscenarios.