public void transitionTo(final ScanningState state, final Transition transition) {
if (statusBar.isDisposed() || transition == Transition.INIT) return;
// TODO: separate GUI and non-GUI stuff
switch (state) {
case IDLE:
// reset state text
button.setEnabled(true);
updateProgress(null, 0, 0);
statusBar.setStatusText(null);
break;
case STARTING:
// start the scan from scratch!
resultTable.removeAll();
try {
scannerThread =
scannerThreadFactory.createScannerThread(
feederRegistry.createFeeder(),
StartStopScanningAction.this,
createResultsCallback(state));
stateMachine.startScanning();
mainWindowTitle = statusBar.getShell().getText();
} catch (RuntimeException e) {
stateMachine.reset();
throw e;
}
break;
case RESTARTING:
// restart the scanning - rescan
resultTable.resetSelection();
try {
scannerThread =
scannerThreadFactory.createScannerThread(
feederRegistry.createRescanFeeder(resultTable.getSelection()),
StartStopScanningAction.this,
createResultsCallback(state));
stateMachine.startScanning();
mainWindowTitle = statusBar.getShell().getText();
} catch (RuntimeException e) {
stateMachine.reset();
throw e;
}
break;
case SCANNING:
scannerThread.start();
break;
case STOPPING:
statusBar.setStatusText(Labels.getLabel("state.waitForThreads"));
break;
case KILLING:
button.setEnabled(false);
statusBar.setStatusText(Labels.getLabel("state.killingThreads"));
break;
}
// change button image
button.setImage(buttonImages[state.ordinal()]);
button.setText(buttonTexts[state.ordinal()]);
}
/** This method initializes main controls of the main window */
private void initControlsArea(
final Composite controlsArea,
final Combo feederSelectionCombo,
final Button startStopButton,
final StartStopScanningAction startStopScanningAction,
final ToolsActions.Preferences preferencesListener,
final ToolsActions.ChooseFetchers chooseFetchersListsner) {
controlsArea.setLayoutData(
LayoutHelper.formData(
new FormAttachment(feederArea),
new FormAttachment(100),
new FormAttachment(0),
new FormAttachment(feederArea, 0, SWT.BOTTOM)));
controlsArea.setLayout(LayoutHelper.formLayout(7, 3, 3));
// steal the height from the second child of the FeederGUI - this must be the first edit box.
// this results in better visual alignment with FeederGUIs
Control secondControl = feederRegistry.current().getChildren()[1];
// initialize global standard button height
buttonHeight = secondControl.getSize().y + 2;
// feeder selection combobox
this.feederSelectionCombo = feederSelectionCombo;
feederSelectionCombo.pack();
IPFeederSelectionListener feederSelectionListener = new IPFeederSelectionListener();
feederSelectionCombo.addSelectionListener(feederSelectionListener);
// initialize the selected feeder GUI
feederSelectionCombo.select(guiConfig.activeFeeder);
feederSelectionCombo.setToolTipText(Labels.getLabel("combobox.feeder.tooltip"));
// start/stop button
this.startStopButton = startStopButton;
shell.setDefaultButton(startStopButton);
startStopButton.addSelectionListener(startStopScanningAction);
// traverse the button before the combo (and don't traverse other buttons at all)
controlsArea.setTabList(new Control[] {startStopButton, feederSelectionCombo});
prefsButton = new ToolBar(controlsArea, SWT.FLAT);
prefsButton.setCursor(prefsButton.getDisplay().getSystemCursor(SWT.CURSOR_HAND));
ToolItem item = new ToolItem(prefsButton, SWT.PUSH);
item.setImage(new Image(null, Labels.getInstance().getImageAsStream("button.preferences.img")));
item.setToolTipText(Labels.getLabel("title.preferences"));
item.addListener(SWT.Selection, preferencesListener);
fetchersButton = new ToolBar(controlsArea, SWT.FLAT);
fetchersButton.setCursor(fetchersButton.getDisplay().getSystemCursor(SWT.CURSOR_HAND));
item = new ToolItem(fetchersButton, SWT.PUSH);
item.setImage(new Image(null, Labels.getInstance().getImageAsStream("button.fetchers.img")));
item.setToolTipText(Labels.getLabel("title.fetchers.select"));
item.addListener(SWT.Selection, chooseFetchersListsner);
feederSelectionListener.widgetSelected(null);
}
private void relayoutControls() {
boolean twoRowToolbar = Math.abs(feederRegistry.current().getSize().y - buttonHeight * 2) <= 10;
feederSelectionCombo.setLayoutData(
LayoutHelper.formData(
SWT.DEFAULT, buttonHeight, new FormAttachment(0), null, new FormAttachment(0), null));
if (twoRowToolbar) {
startStopButton.setLayoutData(
LayoutHelper.formData(
feederSelectionCombo.getSize().x,
Platform.MAC_OS ? SWT.DEFAULT : buttonHeight,
new FormAttachment(0),
null,
new FormAttachment(feederSelectionCombo, 0),
null));
prefsButton.setLayoutData(
LayoutHelper.formData(
new FormAttachment(feederSelectionCombo),
null,
new FormAttachment(feederSelectionCombo, 0, SWT.CENTER),
null));
fetchersButton.setLayoutData(
LayoutHelper.formData(
new FormAttachment(startStopButton),
null,
new FormAttachment(startStopButton, 0, SWT.CENTER),
null));
} else {
startStopButton.setLayoutData(
LayoutHelper.formData(
feederSelectionCombo.getSize().x,
Platform.MAC_OS ? SWT.DEFAULT : buttonHeight,
new FormAttachment(feederSelectionCombo),
null,
new FormAttachment(-1),
null));
prefsButton.setLayoutData(
LayoutHelper.formData(
new FormAttachment(startStopButton),
null,
new FormAttachment(feederSelectionCombo, 0, SWT.CENTER),
null));
fetchersButton.setLayoutData(
LayoutHelper.formData(
new FormAttachment(prefsButton),
null,
new FormAttachment(startStopButton, 0, SWT.CENTER),
null));
}
}