com.pixelmed.database
Class DatabaseTreeBrowser

java.lang.Object
  com.pixelmed.database.DatabaseTreeBrowser

Direct Known Subclasses:

DicomCleaner.OurDestinationDatabaseTreeBrowser, DicomCleaner.OurSourceDatabaseTreeBrowser, DoseUtility.OurSourceDatabaseTreeBrowser, DownloadOrTransmit.OurSourceDatabaseTreeBrowser

public class DatabaseTreeBrowser
extends Object

The DatabaseTreeBrowser class implements a Swing graphical user interface to browse the contents of DatabaseInformationModel.

The browser is rendered as a tree view of the entire database and a one row tabular representation of the contents of any entity (record) that the user selects in the tree. Constructors are provided to either add the browser to a frame and creating the tree and table, or to make use of a pair of existing scrolling panes.

Only selection of single nodes is permitted by default.

Though a functional browser can be built using this class, to add application-specific behavior to be applied when a user selects one or more instance entities in the tree, a sub-class inheriting from this class should be constructed that overrides the buildTreeSelectionListenerToDoSomethingWithSelectedFiles method. The default implementation, which handles single and multiple selections is as follows:

        protected TreeSelectionListener buildTreeSelectionListenerToDoSomethingWithSelectedFiles() {
                return new TreeSelectionListener() {
                        public void valueChanged(TreeSelectionEvent tse) {
                                DatabaseTreeRecord[] records = getSelectionPaths();
                                if (!doSomethingWithSelections(records)) {
                                        Vector names = new Vector();
                                        for (DatabaseTreeRecord r : records) {
                                                recurseThroughChildrenGatheringFileNames(r,names);
                                        }
                                doSomethingWithSelectedFiles(names);
                        }
                };
        }
 

Note that this allows you to take the simple approach of overriding the protected method doSomethingWithSelectedFiles, the default implementation of which is just to print the file name.

See Also:

com.pixelmed.database, DatabaseTreeRecord, DatabaseInformationModel, TreePath, TreeSelectionListener

Constructor Summary

DatabaseTreeBrowser(DatabaseInformationModel d, Container content)
Build and display a graphical user interface view of a database information model.

DatabaseTreeBrowser(DatabaseInformationModel d, JFrame frame)
Build and display a graphical user interface view of a database information model.

DatabaseTreeBrowser(DatabaseInformationModel d, JScrollPane treeBrowserScrollPane, JScrollPane attributeBrowserScrollPane)
Build and display a graphical user interface view of a database information model.

Method Summary

protected MouseListener	buildMouseListenerToDetectDoubleClickEvents()
protected TreeSelectionListener	buildTreeSelectionListenerToDisplayAttributesOfSelectedRecord(JScrollPane attributeBrowserScrollPane) By default this method populates the tabular attribute browser when an entity is selected in the tree browser.
protected TreeSelectionListener	buildTreeSelectionListenerToDoSomethingWithSelectedFiles() Override this method to perform application-specific behavior when an entity is selected in the tree browser.
protected void	doSomethingMoreWithWhateverWasSelected() Will be called when a double-click event is detected unless buildMouseListenerToDetectDoubleClickEvents is overriden to do something else.
protected void	doSomethingWithSelectedFiles(Vector paths) Will be called when a selection is made or changed and doSomethingWithSelections() returns false and not otherwise.
protected boolean	doSomethingWithSelections(DatabaseTreeRecord[] selections) Will be called when a selection is made or changed.
DatabaseTreeRecord[]	getSelectionPaths() Return the records currently selected.
static void	recurseThroughChildrenGatheringFileNames(DatabaseTreeRecord r, Vector names) Recursively process the specified DatabaseTreeRecord and all its children finding file paths at the instance level.

Methods inherited from class java.lang.Object

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

Constructor Detail

DatabaseTreeBrowser

public DatabaseTreeBrowser(DatabaseInformationModel d,
                           JScrollPane treeBrowserScrollPane,
                           JScrollPane attributeBrowserScrollPane)
                    throws DicomException

Build and display a graphical user interface view of a database information model.

Parameters:

d - the instance of the database (information model)

treeBrowserScrollPane - the scrolling pane in which the tree view of the entire model (database) will be rendered

attributeBrowserScrollPane - the scrolling pane in which the tabular view of the currently selected entity (record) will be rendered

Throws:

DicomException - thrown if the information cannot be extracted

DatabaseTreeBrowser

public DatabaseTreeBrowser(DatabaseInformationModel d,
                           JFrame frame)
                    throws DicomException

Build and display a graphical user interface view of a database information model.

Parameters:

d - the instance of the database (information model)

frame - a frame to whose content pane will be added scrolling panes containing tree and tabular selection views

Throws:

DicomException - thrown if the information cannot be extracted

DatabaseTreeBrowser

public DatabaseTreeBrowser(DatabaseInformationModel d,
                           Container content)
                    throws DicomException

Build and display a graphical user interface view of a database information model.

Parameters:

d - the instance of the database (information model)

content - a container to which will be added scrolling panes containing tree and tabular selection views

Throws:

DicomException - thrown if the information cannot be extracted

Method Detail

getSelectionPaths

public DatabaseTreeRecord[] getSelectionPaths()

Return the records currently selected.

Returns:

the records currently selected

buildTreeSelectionListenerToDoSomethingWithSelectedFiles

protected TreeSelectionListener buildTreeSelectionListenerToDoSomethingWithSelectedFiles()

Override this method to perform application-specific behavior when an entity is selected in the tree browser.

By default, this method calls doSomethingWithSelections, then if that returns false, for each of the selected records (and there may be more than one), adds to a Vector of file names (paths) of that record and the subtrees below it, then calls doSomethingWithSelectedFiles.

recurseThroughChildrenGatheringFileNames

public static void recurseThroughChildrenGatheringFileNames(DatabaseTreeRecord r,
                                                            Vector names)

Recursively process the specified DatabaseTreeRecord and all its children finding file paths at the instance level.

A static helper method, that is public so that it can be used in subclasses that override buildTreeSelectionListenerToDoSomethingWithSelectedFiles.

Parameters:

r - the current DatabaseTreeRecord to process

names - the file names (paths) to add to

buildTreeSelectionListenerToDisplayAttributesOfSelectedRecord

protected TreeSelectionListener buildTreeSelectionListenerToDisplayAttributesOfSelectedRecord(JScrollPane attributeBrowserScrollPane)

By default this method populates the tabular attribute browser when an entity is selected in the tree browser.

Override this method to perform application-specific behavior, perhaps if not all attributes in the database for the selected entity are to be displayed, or their values are to be rendered specially. The default implementation renders everything as strings except those local database administrative attributes normally excluded.

Parameters:

attributeBrowserScrollPane - the tabular attribute browser

buildMouseListenerToDetectDoubleClickEvents

protected MouseListener buildMouseListenerToDetectDoubleClickEvents()

doSomethingWithSelections

protected boolean doSomethingWithSelections(DatabaseTreeRecord[] selections)

Will be called when a selection is made or changed.

Note that during multi-selection, or deselection, this may be called multiple times, so use this method to update cache of what is selected rather than initiating action on the selections, which should be done by some other means.

Parameters:

selections - return true if did something and hence should do no more

doSomethingWithSelectedFiles

protected void doSomethingWithSelectedFiles(Vector paths)

Will be called when a selection is made or changed and doSomethingWithSelections() returns false and not otherwise.

Note that during multi-selection, or deselection, this may be called multiple times, so use this method to update cache of what is selected rather than initiating action on the selections, which should be done by some other means.

Parameters:

paths -

doSomethingMoreWithWhateverWasSelected

protected void doSomethingMoreWithWhateverWasSelected()

Will be called when a double-click event is detected unless buildMouseListenerToDetectDoubleClickEvents is overriden to do something else.