com.inet.viewer
Class SwingViewerContext

java.lang.Object
  com.inet.viewer.SwingViewerContext

All Implemented Interfaces:

ViewerContext

public class SwingViewerContext
extends java.lang.Object
implements ViewerContext

The default implementation of ViewerContext for i-net Clear Reports Viewer. This takes all errors and displays them in a small error dialog, and shows a simple info dialog when one is requested.

Note that most often the source given for an error will be a SwingReportView, allowing you to make further adjustments to your settings for that view.

For example, if an UnknownHostException comes for a ReportView, you might want to make an adjustment to the ReportView's RenderData object, making it fall back onto a backup report server instead of the original one:

class MyErrorHandler extends SwingViewerContext {
public void showError( ViewerException e, Object source ) {
if (source instanceof ReportView && e.getCause() instanceof UnknownHostException) {
((ReportView)source).getReportData().setReportLocation( "http://www.backupserver.com:9000/?report=file:backupreport.rpt" );
((ReportView)source).reload();
}
}

It is also possible you would like to add specific logging to all errors shown:

class MyErrorHandler extends SwingViewerContext {
public void showError( ViewerException e, Object source ) {
// ...log the error here...
super.showError(e,source);
}

Since:

7.1

See Also:

ReportViewer.setViewerContext(ViewerContext)

Constructor Summary

SwingViewerContext()
Deprecated. As of i-net Crystal-Clear 10.1, replaced by SwingViewerContext(SwingReportViewer)

SwingViewerContext(SwingReportViewer viewer)
Creates a SwingViewerContext with a reference to a SwingReportViewer which is used for example when parent components are needed for dialogs, etc.

Method Summary

void	export(ReportView view) This method is called when the export action is to be performed.
Progress	export(java.awt.Component parent, RenderData data, java.beans.PropertyChangeListener changeListener) Opens the export dialog with the given parent as its parent and exports using the provided RenderData object.
Progress	export(java.awt.Component parent, RenderData data) Opens the export dialog with the given parent as its parent and exports using the provided RenderData object.
SwingReportViewer	getViewer() Returns the viewer to which this context belongs.
void	print(ReportView view) This method is called when the print action is to be performed.
void	setViewer(SwingReportViewer viewer) Sets the viewer to which this context belongs.
void	showError(java.lang.Throwable e, java.lang.Object source) This method will be called whenever an error occurs and thereby allows the implementor of this interface to handle the error as seen fit.
void	showInfo() Shows the info screen of this viewer.
boolean	showPrompts(PromptData[] prompts, RenderData data) Handles a prompt request from the server.
void	showStatusMessage(ReportView view, java.lang.String message, boolean isError) Handled when a status message is to be displayed.
void	showUrl(java.lang.String url, java.util.Properties props) Handles opening a URL, e.g. a click on a hyperlink.

Constructor Detail

SwingViewerContext

public SwingViewerContext()

Deprecated. As of i-net Crystal-Clear 10.1, replaced by SwingViewerContext(SwingReportViewer)

Creates a SwingViewerContext with no current reference to a SwingReportViewer.

SwingViewerContext

public SwingViewerContext(SwingReportViewer viewer)

Creates a SwingViewerContext with a reference to a SwingReportViewer which is used for example when parent components are needed for dialogs, etc.

Parameters:

viewer - SwingReportViewer to which this context belongs.

Method Detail

showInfo

public void showInfo()

Shows the info screen of this viewer.

Specified by:

showInfo in interface ViewerContext

Since:

7.0

showError

public void showError(java.lang.Throwable e,
                      java.lang.Object source)

This method will be called whenever an error occurs and thereby allows the implementor of this interface to handle the error as seen fit.

Specified by:

showError in interface ViewerContext

Parameters:

e - The Throwable of the error that actually occurred.

source - The source where the exception occurred, such as the SwingReportView or SwingPageView.

Since:

7.0

export

public void export(ReportView view)

This method is called when the export action is to be performed. By default, this will show the export dialog and then export the currently visible report view's report with the settings given by the user.

Specified by:

export in interface ViewerContext

Parameters:

view - ReportView whose report is to be exported

Since:

7.0

export

public Progress export(java.awt.Component parent,
                       RenderData data,
                       java.beans.PropertyChangeListener changeListener)

Opens the export dialog with the given parent as its parent and exports using the provided RenderData object. This method can be called without first initializing a ReportViewer if so desired. Note that this method is never called by the viewer itself, rather it is meant for you to call yourself if you want to export without initializing a viewer.

Parameters:

parent - Parent to display the dialog in

data - RenderData to use for retrieving the export data

changeListener - PropertyChangeListener that will be notified whenever a bean changes a "bound" property.

Returns:

the running export progress

Since:

7.6

export

public Progress export(java.awt.Component parent,
                       RenderData data)

Opens the export dialog with the given parent as its parent and exports using the provided RenderData object. This method can be called without first initializing a ReportViewer if so desired. Note that this method is never called by the viewer itself, rather it is meant for you to call yourself if you want to export without initializing a viewer.

Parameters:

parent - Parent to display the dialog in

data - RenderData to use for retrieving the export data

Returns:

the running export progress

Since:

7.6

print

public void print(ReportView view)

This method is called when the print action is to be performed. By default, this will show a print dialog and then print the given report view's report.

Specified by:

print in interface ViewerContext

Parameters:

view - ReportView whose report is to be printed.

Since:

7.0

showStatusMessage

public void showStatusMessage(ReportView view,
                              java.lang.String message,
                              boolean isError)

Handled when a status message is to be displayed. Normally the implementor will display this message in the status bar.

Specified by:

showStatusMessage in interface ViewerContext

Parameters:

view - the ReportView which is to display the status message, must not be null

message - the message to be displayed

isError - true if the message is an error message, false otherwise.

Since:

8.1

showUrl

public void showUrl(java.lang.String url,
                    java.util.Properties props)
             throws java.net.MalformedURLException

Handles opening a URL, e.g. a click on a hyperlink. Actually opening the link should run asynchronously, so it won't block the control flow.

Specified by:

showUrl in interface ViewerContext

Parameters:

url - String of the hyperlink URL which is to be shown. The length need to be > 0.

props - Extra optional Properties for the URL connection (can be null for no extra properties)

Throws:

java.net.MalformedURLException - The supplied URL String is invalid.

setViewer

public void setViewer(SwingReportViewer viewer)

Sets the viewer to which this context belongs.

Parameters:

viewer - the viewer to which this context belongs, can be null if the context is not to be bound to a viewer

Since:

9.0

getViewer

public SwingReportViewer getViewer()

Returns the viewer to which this context belongs.

Returns:

the viewer to which this context belongs, or null if the context is not bound to a viewer

Since:

9.0

showPrompts

public boolean showPrompts(PromptData[] prompts,
                           RenderData data)

Handles a prompt request from the server. The chosen value of the prompts in the array must be set in the PromptData objects using PromptData.setChosenValues(Object).

Specified by:

showPrompts in interface ViewerContext

Parameters:

prompts - list of required prompts

data - RenderData of the report requiring prompts

Returns:

true if prompts were successfully set, false if the prompt dialog was canceled