|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Object | +--java.awt.Component | +--java.awt.Container | +--javax.swing.JComponent | +--javax.swing.JOptionPane | +--uk.ac.starlink.table.gui.SQLDialog | +--uk.ac.starlink.table.gui.SQLReadDialog
A table load dialogue which interrogates the user about an SQL query on a JDBC database.
Field Summary |
Fields inherited from class javax.swing.JComponent |
accessibleContext, listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW |
Fields inherited from class java.awt.Component |
BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT |
Fields inherited from interface java.awt.image.ImageObserver |
ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH |
Constructor Summary | |
SQLReadDialog()
Constructs a new SQLReadDialog. |
Method Summary | |
String |
getDescription()
Description of this dialogue. |
String |
getName()
Name of this dialogue. |
boolean |
isAvailable()
Indicates whether this dialog can be invoked. |
boolean |
showLoadDialog(Component parent,
StarTableFactory factory,
ComboBoxModel formatModel,
TableConsumer eater)
Presents the user with a dialogue which may be used to specify a table to load. |
Methods inherited from class uk.ac.starlink.table.gui.SQLDialog |
getBaseURL, getConnector, getFullURL, getRef |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
public SQLReadDialog()
Method Detail |
public String getName()
TableLoadDialog
Action.NAME
)
which invokes showLoadDialog.
getName
in interface TableLoadDialog
getName
in class Component
public String getDescription()
TableLoadDialog
Action.SHORT_DESCRIPTION
)
which invokes showLoadDialog
getDescription
in interface TableLoadDialog
public boolean isAvailable()
TableLoadDialog
TableLoadDialog.showLoadDialog(java.awt.Component, uk.ac.starlink.table.StarTableFactory, javax.swing.ComboBoxModel, uk.ac.starlink.table.gui.TableConsumer)
,
but is not guaranteed to be invoked again.
isAvailable
in interface TableLoadDialog
public boolean showLoadDialog(Component parent, StarTableFactory factory, ComboBoxModel formatModel, TableConsumer eater)
TableLoadDialog
In the event that true is returned, the implementation of this
method should ensure that notification of the table load attempt
should be made to the consumer argument
using the defined TableConsumer
methods.
The purpose of doing it like this
(rather than just returning a StarTable from this method)
is so that the table loading, which may be time-consuming,
can be done in a thread other than the event dispatch thread
on which this method will have been called.
The LoadWorker
class is provided to assist with this;
the usual idiom for performing the load from the event dispatch
thread within the implementation of this method looks like this:
new LoadWorker( tableConsumer, tableId ) { protected StarTable attemptLoad() throws IOException { return tableFactory.makeStarTable( ... ); } }.invoke();
Error conditions during the course of the user interaction by this method should in general be dealt with by informing the user (e.g. with a popup) and permitting another attempt. Some sort of cancel button should be provided which should trigger return with a false result.
The formatModel argument may be used to determine or
set the format to be used for interpreting tables.
Its entries are Strings, and in general the selected one
should be passed as the handler argument to one of
factory's makeStarTable methods.
The dialogue may wish to allow the user to modify the selection
by presenting a JComboBox
based on this model.
A suitable model can be obtained using
StarTableChooser.makeFormatBoxModel(uk.ac.starlink.table.StarTableFactory)
.
showLoadDialog
in interface TableLoadDialog
parent
- parent windowfactory
- factory which may be used for table creationformatModel
- comboBoxModeleater
- object which can do something with the loaded table
|
Copyright © 2004 CLRC: Central Laboratory of the Research Councils. All rights reserved. | |||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |