de.must.appletserver

Class DataImageViewer

java.lang.Object

de.must.appletserver.RemoteElement

de.must.appletserver.ImageViewer

de.must.appletserver.DataImageViewer

All Implemented Interfaces:

AppletTalker, FileStreamTransfer, InlayCenterContent, Remotable, RemoteContent, Storable, BinaryComponent, Exemptible, ExemptibleManager

public class DataImageViewer
extends ImageViewer
implements Storable, BinaryComponent, FileStreamTransfer

A database connected image viewer.

Field Summary

Fields inherited from class de.must.appletserver.RemoteElement

context, editable, enabled, lastEditability, lastVisibility, name, nonstandardPanel, nonstandardPosition, sessionData, toolTipText, visible

Constructor Summary

Constructors

Constructor and Description
DataImageViewer(SessionData sessionData, DataObject assignedDataObject, java.lang.String columnNameForBinaryData)

Method Summary

Modifier and Type	Method and Description
void	buildRemoteView(ToAppletWriter out) Build remote view.
void	destroy() Don't wait until garbage collector removed weak reference.
void	fetchValuesFromRequest(GeneralizedRequest request)
DataObject	getAssignedDataObject()
boolean	isContentValid()
boolean	isFilled() Returns true if the component has a value.
boolean	isModified() Returns true if the component's value differs from its initial value.
boolean	isRequirementUnfulfilled() Returns true if the component's value is mandatory but not filled.
boolean	isToSave()
boolean	isValid() Returns true if the component's value is valid.
void	loadValue() Loads the component's database stored value.
void	receiveFrom(GeneralizedRequest request) Receives information from request for further specification what to provide.
void	saveValue() Stores the component's value.
void	setLabel(java.lang.String label)
void	setRequired(boolean required) Sets the fact that user input is requested (mandatory)
void	setValues(ToAppletWriter out)
void	writeToResponseOutputStream(GeneralizedRequest request, HttpServletResponse response) Writes the stream to the response output stream.

Methods inherited from class de.must.appletserver.RemoteElement

beginAction, endAction, free, getContext, getName, getTranslation, isEnabled, isVisible, register, requestFocusInWindow, resetLastStatus, selectAll, setEditable, setEnabled, setToolTipText, setVisible

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.must.appletserver.RemoteContent

requestFocusInWindow, selectAll

Methods inherited from interface de.must.appletserver.Remotable

setToolTipText

Methods inherited from interface de.must.appletserver.FileStreamTransfer

getName

Constructor Detail

DataImageViewer

public DataImageViewer(SessionData sessionData,
                       DataObject assignedDataObject,
                       java.lang.String columnNameForBinaryData)

Method Detail

setLabel

public void setLabel(java.lang.String label)

getAssignedDataObject

public DataObject getAssignedDataObject()

Specified by:

getAssignedDataObject in interface Storable

loadValue

public void loadValue()

Description copied from interface: Storable

Loads the component's database stored value.

Specified by:

loadValue in interface Storable

isToSave

public boolean isToSave()

isContentValid

public boolean isContentValid()

buildRemoteView

public void buildRemoteView(ToAppletWriter out)

Description copied from interface: AppletTalker

Build remote view.

Specified by:

buildRemoteView in interface AppletTalker

Specified by:

buildRemoteView in interface InlayCenterContent

Overrides:

buildRemoteView in class RemoteElement

Parameters:

out - the writer which will be read by the applet

setValues

public void setValues(ToAppletWriter out)

Specified by:

setValues in interface RemoteContent

Overrides:

setValues in class RemoteElement

fetchValuesFromRequest

public void fetchValuesFromRequest(GeneralizedRequest request)

Specified by:

fetchValuesFromRequest in interface Remotable

Overrides:

fetchValuesFromRequest in class ImageViewer

receiveFrom

public void receiveFrom(GeneralizedRequest request)

Description copied from interface: FileStreamTransfer

Receives information from request for further specification what to provide.

Specified by:

receiveFrom in interface FileStreamTransfer

Parameters:

request - the request starting the stream transfer

writeToResponseOutputStream

public void writeToResponseOutputStream(GeneralizedRequest request,
                                        HttpServletResponse response)

Description copied from interface: FileStreamTransfer

Writes the stream to the response output stream.

Specified by:

writeToResponseOutputStream in interface FileStreamTransfer

Parameters:

request - the request starting the stream transfer

response - the servlet response to which the stream is to write to

saveValue

public void saveValue()

Description copied from interface: Storable

Stores the component's value.

Specified by:

saveValue in interface Storable

Specified by:

saveValue in interface BinaryComponent

setRequired

public void setRequired(boolean required)

Description copied from interface: Storable

Sets the fact that user input is requested (mandatory)

Specified by:

setRequired in interface Storable

Parameters:

required - whether this input is mandatory or not.

isFilled

public boolean isFilled()

Description copied from interface: Storable

Returns true if the component has a value.

Specified by:

isFilled in interface Storable

Returns:

true if the component has a value

isModified

public boolean isModified()

Description copied from interface: Storable

Returns true if the component's value differs from its initial value.

Specified by:

isModified in interface Storable

Returns:

true if the component's value differs from its initial value

isValid

public boolean isValid()

Description copied from interface: Storable

Returns true if the component's value is valid.

Specified by:

isValid in interface Storable

Returns:

true if the component's value is valid

isRequirementUnfulfilled

public boolean isRequirementUnfulfilled()

Description copied from interface: Storable

Returns true if the component's value is mandatory but not filled.

Specified by:

isRequirementUnfulfilled in interface Storable

Returns:

if mandatory input is unfulfilled

destroy

public void destroy()

Description copied from interface: Remotable

Don't wait until garbage collector removed weak reference.

Specified by:

destroy in interface Remotable

Overrides:

destroy in class ImageViewer