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The Waikato Environment for Knowledge Analysis (WEKA), a machine
learning workbench. This version represents the developer version, the
"bleeding edge" of development, you could say. New functionality gets added
to this version.
/*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see m_flowGraphs = new ArrayList();
/** The jtree holding steps */
protected StepTree m_stepTree;
/** The paste buffer */
protected String m_pasteBuffer;
/** The file chooser for loading layout files */
protected JFileChooser m_FileChooser = new JFileChooser(new File(
System.getProperty("user.dir")));
/**
* The file chooser for saving layout files (only supports saving as json .kf
* files
*/
protected JFileChooser m_saveFileChooser = new JFileChooser(new File(
System.getProperty("user.dir")));
/** Manages template flows */
protected TemplateManager m_templateManager = new TemplateManager();
/** Main toolbar */
protected MainKFPerspectiveToolBar m_mainToolBar;
/**
* Construct a new MainKFPerspective
*/
public MainKFPerspective() {
m_isLoaded = true;
m_isActive = true;
setLayout(new BorderLayout());
m_stepTree = new StepTree(this);
DesignPanel designPanel = new DesignPanel(m_stepTree);
// spit pane for design panel and flow tabs
JSplitPane pane =
new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, designPanel, m_flowTabs);
pane.setOneTouchExpandable(true);
add(pane, BorderLayout.CENTER);
Dimension d = designPanel.getPreferredSize();
d = new Dimension((int) (d.getWidth() * 1.5), (int) d.getHeight());
designPanel.setPreferredSize(d);
designPanel.setMinimumSize(d);
m_flowTabs.addChangeListener(new ChangeListener() {
@Override
public void stateChanged(ChangeEvent e) {
int selected = m_flowTabs.getSelectedIndex();
setActiveTab(selected);
}
});
m_mainToolBar = new MainKFPerspectiveToolBar(this);
add(m_mainToolBar, BorderLayout.NORTH);
FileFilter nativeF = null;
for (FileFilter f : Flow.FLOW_FILE_EXTENSIONS) {
m_FileChooser.addChoosableFileFilter(f);
if (((ExtensionFileFilter) f).getExtensions()[0].equals("."
+ JSONFlowLoader.EXTENSION)) {
nativeF = f;
m_saveFileChooser.addChoosableFileFilter(nativeF);
}
}
if (nativeF != null) {
m_FileChooser.setFileFilter(nativeF);
m_saveFileChooser.setFileFilter(nativeF);
}
}
/**
* Return the currently selected step in the design palette
*
* @return the step selected in the design palette, or null if no step is
* selected
*/
public StepManagerImpl getPalleteSelectedStep() {
return m_palleteSelectedStep;
}
/**
* Set a reference to the currently selected step in the design palette
*
* @param stepvisual the currently selected step
*/
protected void setPalleteSelectedStep(StepManagerImpl stepvisual) {
m_palleteSelectedStep = stepvisual;
}
/**
* Popup an error dialog
*
* @param cause the exception associated with the error
*/
public void showErrorDialog(Exception cause) {
m_mainApplication.showErrorDialog(cause);
}
/**
* Popup an information dialog
*
* @param information the information to display
* @param title the title for the dialog
* @param isWarning true if the dialog should be a warning dialog
*/
public void
showInfoDialog(Object information, String title, boolean isWarning) {
m_mainApplication.showInfoDialog(information, title, isWarning);
}
/**
* Set the current flow layout operation
*
* @param opp the operation to use
*/
public void setFlowLayoutOperation(VisibleLayout.LayoutOperation opp) {
// pass this through to the current visible tab. Main purpose
// is to allow the Design palette to cancel any current operation
// when the user clicks on a step in the jtree.
if (getCurrentTabIndex() < getNumTabs() && getCurrentTabIndex() >= 0) {
m_flowGraphs.get(getCurrentTabIndex()).setFlowLayoutOperation(opp);
}
}
/**
* Return true if the snap-to-grid button is selected
*
* @return true if snap-to-grid is turned on
*/
public boolean getSnapToGrid() {
return ((JToggleButton) m_mainToolBar
.getWidget(MainKFPerspectiveToolBar.Widgets.SNAP_TO_GRID_BUTTON
.toString())).isSelected();
}
/**
* Clear the current selection in the design palette
*/
public void clearDesignPaletteSelection() {
m_stepTree.clearSelection();
}
/**
* Get the contents of the paste buffer
*
* @return the contents of the paste buffer (in JSON)
*/
public String getPasteBuffer() {
return m_pasteBuffer;
}
/**
* Set the contents of the paste buffer
*
* @param serializedFlow (sub-)flow in JSON
*/
protected void setPasteBuffer(String serializedFlow) {
m_pasteBuffer = serializedFlow;
}
/**
* Copy the supplied steps to the clipboard
*
* @param steps a list of steps to copy
* @throws WekaException if a problem occurs
*/
public void copyStepsToClipboard(List steps) throws WekaException {
if (steps.size() > 0) {
m_pasteBuffer =
VisibleLayout.serializeStepsToJSON(steps, "Clipboard copy");
getMainToolBar().enableWidgets(
MainKFPerspectiveToolBar.Widgets.PASTE_BUTTON.toString());
}
}
public void copyFlowToClipboard(Flow flow) throws WekaException {
m_pasteBuffer = JSONFlowUtils.flowToJSON(flow);
getMainToolBar().enableWidgets(
MainKFPerspectiveToolBar.Widgets.PASTE_BUTTON.toString());
}
/**
* Get the template manager
*
* @return the template manager
*/
public TemplateManager getTemplateManager() {
return m_templateManager;
}
/**
* Add a new untitled tab to the UI
*/
public synchronized void addUntitledTab() {
if (getNumTabs() == 0 || getAllowMultipleTabs()) {
addTab("Untitled" + m_untitledCount++);
} else {
m_flowGraphs.get(getCurrentTabIndex()).stopFlow();
m_flowGraphs.get(getCurrentTabIndex()).setFlow(new Flow());
}
}
/**
* Add a new titled tab to the UI
*
* @param tabTitle the title for the tab
*/
public synchronized void addTab(String tabTitle) {
VisibleLayout newLayout = new VisibleLayout(this);
m_flowGraphs.add(newLayout);
m_flowTabs.add(tabTitle, newLayout);
m_flowTabs.setTabComponentAt(getNumTabs() - 1, new CloseableTabTitle(
m_flowTabs, "(Ctrl+W)", new CloseableTabTitle.ClosingCallback() {
@Override
public void tabClosing(int tabIndex) {
if (getAllowMultipleTabs()) {
removeTab(tabIndex);
}
}
}));
setActiveTab(getNumTabs() - 1);
}
/**
* Set the edited status for the current (visible) tab
*
* @param edited true if the flow in the tab has been edited (but not saved)
*/
public void setCurrentTabTitleEditedStatus(boolean edited) {
CloseableTabTitle current =
(CloseableTabTitle) m_flowTabs.getTabComponentAt(getCurrentTabIndex());
current.setBold(edited);
}
/**
* Get the index of the current (visible) tab
*
* @return the index of the visible tab
*/
public int getCurrentTabIndex() {
return m_flowTabs.getSelectedIndex();
}
/**
* Get the number of open tabs
*
* @return the number of open tabs
*/
public synchronized int getNumTabs() {
return m_flowTabs.getTabCount();
}
/**
* Get the title of the tab at the supplied index
*
* @param index the index of the tab to get the title for
* @return the title of the tab
* @throws IndexOutOfBoundsException if the index is out of range
*/
public synchronized String getTabTitle(int index) {
if (index < getNumTabs() && index >= 0) {
return m_flowTabs.getTitleAt(index);
}
throw new IndexOutOfBoundsException("Tab index " + index
+ " is out of range!");
}
/**
* Set the active (visible) tab
*
* @param tabIndex the index of the tab to make active
*/
public synchronized void setActiveTab(int tabIndex) {
if (tabIndex < getNumTabs() && tabIndex >= 0) {
m_flowTabs.setSelectedIndex(tabIndex);
VisibleLayout current = getCurrentLayout();
m_mainToolBar.enableWidget(
MainKFPerspectiveToolBar.Widgets.SAVE_FLOW_BUTTON.toString(),
!current.isExecuting());
m_mainToolBar.enableWidget(
MainKFPerspectiveToolBar.Widgets.SAVE_FLOW_AS_BUTTON.toString(),
!current.isExecuting());
m_mainToolBar.enableWidget(
MainKFPerspectiveToolBar.Widgets.PLAY_PARALLEL_BUTTON.toString(),
!current.isExecuting());
m_mainToolBar.enableWidget(
MainKFPerspectiveToolBar.Widgets.PLAY_SEQUENTIAL_BUTTON.toString(),
!current.isExecuting());
m_mainToolBar.enableWidget(
MainKFPerspectiveToolBar.Widgets.ZOOM_OUT_BUTTON.toString(),
!current.isExecuting());
m_mainToolBar.enableWidget(
MainKFPerspectiveToolBar.Widgets.ZOOM_IN_BUTTON.toString(),
!current.isExecuting());
if (current.getZoomSetting() == 50) {
m_mainToolBar.enableWidget(
MainKFPerspectiveToolBar.Widgets.ZOOM_OUT_BUTTON.toString(), false);
}
if (current.getZoomSetting() == 200) {
m_mainToolBar.enableWidget(
MainKFPerspectiveToolBar.Widgets.ZOOM_IN_BUTTON.toString(), false);
}
m_mainToolBar.enableWidget(
MainKFPerspectiveToolBar.Widgets.CUT_BUTTON.toString(), current
.getSelectedSteps().size() > 0 && !current.isExecuting());
m_mainToolBar.enableWidget(
MainKFPerspectiveToolBar.Widgets.COPY_BUTTON.toString(), current
.getSelectedSteps().size() > 0 && !current.isExecuting());
m_mainToolBar.enableWidget(
MainKFPerspectiveToolBar.Widgets.DELETE_BUTTON.toString(), current
.getSelectedSteps().size() > 0 && !current.isExecuting());
m_mainToolBar.enableWidget(
MainKFPerspectiveToolBar.Widgets.SELECT_ALL_BUTTON.toString(),
current.numSteps() > 0 && !current.isExecuting());
m_mainToolBar.enableWidget(
MainKFPerspectiveToolBar.Widgets.PASTE_BUTTON.toString(),
getPasteBuffer() != null && getPasteBuffer().length() > 0
&& !current.isExecuting());
m_mainToolBar.enableWidget(
MainKFPerspectiveToolBar.Widgets.STOP_BUTTON.toString(),
current.isExecuting());
m_mainToolBar.enableWidget(
MainKFPerspectiveToolBar.Widgets.UNDO_BUTTON.toString(),
!current.isExecuting() && current.getUndoBufferSize() > 0);
m_mainToolBar.enableWidget(
MainKFPerspectiveToolBar.Widgets.NEW_FLOW_BUTTON.toString(),
!current.isExecuting() && getAllowMultipleTabs());
}
}
/**
* Close all the open tabs
*/
public void closeAllTabs() {
for (int i = 0; i < getNumTabs(); i++) {
removeTab(i);
}
}
/**
* Remove/close a tab
*
* @param tabIndex the index of the tab to close
*/
public synchronized void removeTab(int tabIndex) {
if (tabIndex < 0 || tabIndex >= getNumTabs()) {
return;
}
if (m_flowGraphs.get(tabIndex).getEdited()) {
String tabTitle = m_flowTabs.getTitleAt(tabIndex);
String message =
"\"" + tabTitle + "\" has been modified. Save changes "
+ "before closing?";
int result =
JOptionPane.showConfirmDialog(this, message, "Save changes",
JOptionPane.YES_NO_CANCEL_OPTION);
if (result == JOptionPane.YES_OPTION) {
saveLayout(tabIndex, false);
} else if (result == JOptionPane.CANCEL_OPTION) {
return;
}
}
m_flowTabs.remove(tabIndex);
m_flowGraphs.remove(tabIndex);
if (getCurrentTabIndex() < 0) {
m_mainToolBar.disableWidgets(
MainKFPerspectiveToolBar.Widgets.SAVE_FLOW_BUTTON.toString(),
MainKFPerspectiveToolBar.Widgets.SAVE_FLOW_AS_BUTTON.toString());
}
}
/**
* Get the flow layout for the current (visible) tab
*
* @return the current flow layout
*/
public VisibleLayout getCurrentLayout() {
if (getCurrentTabIndex() >= 0) {
return m_flowGraphs.get(getCurrentTabIndex());
}
return null;
}
/**
* Get the flow layout at the supplied index
*
* @param index the index of the flow layout to get
* @return the flow layout at the index
* @throws IndexOutOfBoundsException if the index is out of range
*/
public VisibleLayout getLayoutAt(int index) {
if (index >= 0 && index < m_flowGraphs.size()) {
return m_flowGraphs.get(index);
}
throw new IndexOutOfBoundsException("Flow index " + index
+ " is out of range!");
}
/**
* Returns true if the perspective is allowing multiple tabs to be open
*
* @return true if multiple tabs are allowed
*/
public boolean getAllowMultipleTabs() {
return m_allowMultipleTabs;
}
/**
* Set whether multiple tabs are allowed
*
* @param allow true if multiple tabs are allowed
*/
public void setAllowMultipleTabs(boolean allow) {
m_allowMultipleTabs = allow;
}
/**
* Get the value of a setting for the main perspective
*
* @param propKey the key of the setting to get
* @param defaultVal the default value to use if nothing is set yet
* @param the type of the setting
* @return the value (or default value) for the setting
*/
public T getSetting(Settings.SettingKey propKey, T defaultVal) {
return m_mainApplication.getApplicationSettings().getSetting(
getPerspectiveID(), propKey, defaultVal, null);
}
public void notifyIsDirty() {
firePropertyChange("PROP_DIRTY", null, null);
}
/**
* Save a particular flow layout
*
* @param tabIndex the index of the tab containing the flow to asave
* @param showDialog true if a file dialog should be popped up
*/
protected void saveLayout(int tabIndex, boolean showDialog) {
m_flowGraphs.get(tabIndex).saveLayout(showDialog);
}
/**
* Load a flow layout. Prompts via a filechooser
*/
public void loadLayout() {
File lFile = null;
int returnVal = m_FileChooser.showOpenDialog(this);
if (returnVal == JFileChooser.APPROVE_OPTION) {
lFile = m_FileChooser.getSelectedFile();
loadLayout(lFile, true);
}
}
/**
* Load a flow layout.
*
* @param fFile the file to load
* @param newTab true if the flow should be loaded into a new tab
*/
public void loadLayout(File fFile, boolean newTab) {
File absoluteF = fFile.getAbsoluteFile();
if (!newTab) {
m_flowGraphs.get(getCurrentTabIndex()).loadLayout(fFile, false);
m_flowGraphs.get(getCurrentTabIndex()).getEnvironment()
.addVariable(FLOW_PARENT_DIRECTORY_VARIABLE_KEY, absoluteF.getParent());
} else {
String tabTitle = fFile.toString();
tabTitle =
tabTitle.substring(tabTitle.lastIndexOf(File.separator) + 1,
tabTitle.length());
if (tabTitle.lastIndexOf('.') > 0) {
tabTitle = tabTitle.substring(0, tabTitle.lastIndexOf('.'));
}
addTab(tabTitle);
VisibleLayout current = getCurrentLayout();
current.loadLayout(fFile, false);
current.getEnvironment().addVariable(FLOW_PARENT_DIRECTORY_VARIABLE_KEY,
absoluteF.getParent());
// set the enabled status of the toolbar widgets
setActiveTab(getCurrentTabIndex());
}
}
/**
* Set the title of the current (visible) tab
*
* @param title the tab title to use
*/
protected void setCurrentTabTitle(String title) {
m_flowTabs.setTitleAt(getCurrentTabIndex(), title);
}
/**
* Return true if memory is running low
*
* @return true if memory is running low
*/
public boolean isMemoryLow() {
return m_memory.memoryIsLow();
}
/**
* Print a warning if memory is low (and show a GUI dialog if running in a
* graphical environment)
*
* @return true if user opts to continue (in the GUI case)
*/
public boolean showMemoryIsLow() {
return m_memory.showMemoryIsLow();
}
public boolean getDebug() {
return getMainApplication()
.getApplicationSettings()
.getSetting(getPerspectiveID(), KFDefaults.LOGGING_LEVEL_KEY,
LoggingLevel.BASIC, Environment.getSystemWide()).ordinal() == LoggingLevel.DEBUGGING
.ordinal();
}
/**
* Get the main toolbar
*
* @return the main toolbar
*/
public MainKFPerspectiveToolBar getMainToolBar() {
return m_mainToolBar;
}
/**
* Set active status of this perspective. True indicates that this perspective
* is the visible active perspective in the application
*
* @param active true if this perspective is the active one
*/
@Override
public void setActive(boolean active) {
if (active) {
// are we operating as a non-primary perspective somewhere other
// than in the Knowledge Flow?
if (!getMainApplication().getApplicationID().equalsIgnoreCase(
KFDefaults.APP_ID)) {
// check number of tabs and create a new one if none are open
if (getNumTabs() == 0) {
addUntitledTab();
}
}
}
}
/**
* Get an ordered list of menus to appear in the main menu bar. Return null
* for no menus
*
* @return a list of menus to appear in the main menu bar or null for no menus
*/
@Override
public List getMenus() {
return m_mainToolBar.getMenus();
}
/**
* Get the default settings for this perspective (or null if there are none)
*
* @return the default settings for this perspective, or null if the
* perspective does not have any settings
*/
@Override
public Defaults getDefaultSettings() {
return new KFDefaults();
}
/**
* Returns true if this perspective is OK with being an active perspective -
* i.e. the user can click on this perspective at this time in the perspective
* toolbar. For example, a Perspective might return false from this method if
* it needs a set of instances to operate but none have been supplied yet.
*
* @return true if this perspective can be active at the current time
*/
@Override
public boolean okToBeActive() {
return true;
}
/**
* Called when the user alters settings. The settings altered by the user are
* not necessarily ones related to this perspective
*/
@Override
public void settingsChanged() {
Settings settings = getMainApplication().getApplicationSettings();
int fontSize =
settings.getSetting(KFDefaults.MAIN_PERSPECTIVE_ID,
new Settings.SettingKey(KFDefaults.MAIN_PERSPECTIVE_ID
+ ".logMessageFontSize", "", ""), -1);
for (VisibleLayout v : m_flowGraphs) {
v.getLogPanel().setLoggingFontSize(fontSize);
}
}
/**
* Returns true if this perspective can do something meaningful with a set of
* instances
*
* @return true if this perspective accepts instances
*/
@Override
public boolean acceptsInstances() {
// allow instances only if running in the Workbench and the user has
// opted to manually send loaded instances to perspectives. This is because
// we create a new flow containing a MemoryDataSource when receiving
// a set of instances. The MemoryDataSource keeps a reference to the data.
GUIApplication mainApp = getMainApplication();
if (mainApp.getApplicationID().equals(WorkbenchDefaults.APP_ID)) {
boolean sendToAll =
mainApp.getApplicationSettings().getSetting(
PreprocessPanel.PreprocessDefaults.ID,
PreprocessPanel.PreprocessDefaults.ALWAYS_SEND_INSTANCES_TO_ALL_KEY,
PreprocessPanel.PreprocessDefaults.ALWAYS_SEND_INSTANCES_TO_ALL,
Environment.getSystemWide());
return !sendToAll;
}
return false;
}
/**
* Set instances (if this perspective can use them)
*
* @param instances the instances
*/
@Override
public void setInstances(Instances instances) {
addUntitledTab();
VisibleLayout newL = m_flowGraphs.get(m_flowGraphs.size() - 1);
MemoryBasedDataSource memoryBasedDataSource = new MemoryBasedDataSource();
memoryBasedDataSource.setInstances(instances);
StepManagerImpl newS = new StepManagerImpl(memoryBasedDataSource);
newL.addStep(newS, 30, 30);
}
}
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