/** * Create preview component. * * @param type type * @param comboBox the options. * @param prefSize the preferred size * @return the component. */ private static Component createPreview(int type, final JComboBox comboBox, Dimension prefSize) { JComponent preview = null; if (type == DeviceConfigurationComboBoxModel.AUDIO) { Object selectedItem = comboBox.getSelectedItem(); if (selectedItem instanceof AudioSystem) { AudioSystem audioSystem = (AudioSystem) selectedItem; if (!NoneAudioSystem.LOCATOR_PROTOCOL.equalsIgnoreCase(audioSystem.getLocatorProtocol())) { preview = new TransparentPanel(new GridBagLayout()); createAudioSystemControls(audioSystem, preview); } } } else if (type == DeviceConfigurationComboBoxModel.VIDEO) { JLabel noPreview = new JLabel( NeomediaActivator.getResources().getI18NString("impl.media.configform.NO_PREVIEW")); noPreview.setHorizontalAlignment(SwingConstants.CENTER); noPreview.setVerticalAlignment(SwingConstants.CENTER); preview = createVideoContainer(noPreview); preview.setPreferredSize(prefSize); Object selectedItem = comboBox.getSelectedItem(); CaptureDeviceInfo device = null; if (selectedItem instanceof DeviceConfigurationComboBoxModel.CaptureDevice) device = ((DeviceConfigurationComboBoxModel.CaptureDevice) selectedItem).info; Exception exception; try { createVideoPreview(device, preview); exception = null; } catch (IOException ex) { exception = ex; } catch (MediaException ex) { exception = ex; } if (exception != null) { logger.error("Failed to create preview for device " + device, exception); device = null; } } return preview; }
/** * Creates basic controls for a type (AUDIO or VIDEO). * * @param type the type. * @return the build Component. */ public static Component createBasicControls(final int type) { final JComboBox deviceComboBox = new JComboBox(); deviceComboBox.setEditable(false); deviceComboBox.setModel( new DeviceConfigurationComboBoxModel( deviceComboBox, mediaService.getDeviceConfiguration(), type)); JLabel deviceLabel = new JLabel(getLabelText(type)); deviceLabel.setDisplayedMnemonic(getDisplayedMnemonic(type)); deviceLabel.setLabelFor(deviceComboBox); final Container devicePanel = new TransparentPanel(new FlowLayout(FlowLayout.CENTER)); devicePanel.setMaximumSize(new Dimension(WIDTH, 25)); devicePanel.add(deviceLabel); devicePanel.add(deviceComboBox); final JPanel deviceAndPreviewPanel = new TransparentPanel(new BorderLayout()); int preferredDeviceAndPreviewPanelHeight; switch (type) { case DeviceConfigurationComboBoxModel.AUDIO: preferredDeviceAndPreviewPanelHeight = 225; break; case DeviceConfigurationComboBoxModel.VIDEO: preferredDeviceAndPreviewPanelHeight = 305; break; default: preferredDeviceAndPreviewPanelHeight = 0; break; } if (preferredDeviceAndPreviewPanelHeight > 0) deviceAndPreviewPanel.setPreferredSize( new Dimension(WIDTH, preferredDeviceAndPreviewPanelHeight)); deviceAndPreviewPanel.add(devicePanel, BorderLayout.NORTH); final ActionListener deviceComboBoxActionListener = new ActionListener() { public void actionPerformed(ActionEvent event) { boolean revalidateAndRepaint = false; for (int i = deviceAndPreviewPanel.getComponentCount() - 1; i >= 0; i--) { Component c = deviceAndPreviewPanel.getComponent(i); if (c != devicePanel) { deviceAndPreviewPanel.remove(i); revalidateAndRepaint = true; } } Component preview = null; if ((deviceComboBox.getSelectedItem() != null) && deviceComboBox.isShowing()) { preview = createPreview(type, deviceComboBox, deviceAndPreviewPanel.getPreferredSize()); } if (preview != null) { deviceAndPreviewPanel.add(preview, BorderLayout.CENTER); revalidateAndRepaint = true; } if (revalidateAndRepaint) { deviceAndPreviewPanel.revalidate(); deviceAndPreviewPanel.repaint(); } } }; deviceComboBox.addActionListener(deviceComboBoxActionListener); /* * We have to initialize the controls to reflect the configuration * at the time of creating this instance. Additionally, because the * video preview will stop when it and its associated controls * become unnecessary, we have to restart it when the mentioned * controls become necessary again. We'll address the two goals * described by pretending there's a selection in the video combo * box when the combo box in question becomes displayable. */ deviceComboBox.addHierarchyListener( new HierarchyListener() { public void hierarchyChanged(HierarchyEvent event) { if ((event.getChangeFlags() & HierarchyEvent.SHOWING_CHANGED) != 0) { SwingUtilities.invokeLater( new Runnable() { public void run() { deviceComboBoxActionListener.actionPerformed(null); } }); } } }); return deviceAndPreviewPanel; }
/** * Create preview component. * * @param comboBox the options. * @return the component. */ private static Component createPreview(final JComboBox comboBox) { final JComponent preview; JLabel noPreview = new JLabel(GuiActivator.getResources().getI18NString("impl.media.configform.NO_PREVIEW")); noPreview.setHorizontalAlignment(SwingConstants.CENTER); noPreview.setVerticalAlignment(SwingConstants.CENTER); preview = createVideoContainer(noPreview); preview.setPreferredSize(new Dimension(WIDTH, 280)); preview.setMaximumSize(new Dimension(WIDTH, 280)); final ActionListener comboBoxListener = new ActionListener() { public void actionPerformed(ActionEvent event) { MediaDevice device = (MediaDevice) comboBox.getSelectedItem(); if ((device != null) && device.equals(videoDeviceInPreview)) return; Exception exception; try { createPreview(device, preview); exception = null; } catch (IOException ex) { exception = ex; } catch (MediaException ex) { exception = ex; } if (exception != null) { logger.error("Failed to create preview for device " + device, exception); device = null; } videoDeviceInPreview = device; } }; comboBox.addActionListener(comboBoxListener); /* * We have to initialize the controls to reflect the configuration * at the time of creating this instance. Additionally, because the * video preview will stop when it and its associated controls * become unnecessary, we have to restart it when the mentioned * controls become necessary again. We'll address the two goals * described by pretending there's a selection in the video combo * box when the combo box in question becomes displayable. */ comboBox.addHierarchyListener( new HierarchyListener() { public void hierarchyChanged(HierarchyEvent event) { if (((event.getChangeFlags() & HierarchyEvent.DISPLAYABILITY_CHANGED) != 0) && comboBox.isDisplayable()) { // let current changes end their execution // and after that trigger action on combobox SwingUtilities.invokeLater( new Runnable() { public void run() { comboBoxListener.actionPerformed(null); } }); } else { if (!comboBox.isDisplayable()) videoDeviceInPreview = null; } } }); return preview; }