--- /dev/null
+package org.argeo.eclipse.ui.dialogs;
+
+import org.argeo.api.cms.CmsLog;
+import org.argeo.eclipse.ui.EclipseUiException;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.FocusEvent;
+import org.eclipse.swt.events.FocusListener;
+import org.eclipse.swt.events.ShellAdapter;
+import org.eclipse.swt.events.ShellEvent;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.graphics.Rectangle;
+import org.eclipse.swt.layout.GridData;
+import org.eclipse.swt.layout.GridLayout;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Control;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Shell;
+
+/** Generic lightweight dialog, not based on JFace. */
+@Deprecated
+public class LightweightDialog {
+ private final static CmsLog log = CmsLog.getLog(LightweightDialog.class);
+
+ // must be the same value as org.eclipse.jface.window.Window#OK
+ public final static int OK = 0;
+ // must be the same value as org.eclipse.jface.window.Window#CANCEL
+ public final static int CANCEL = 1;
+
+ private Shell parentShell;
+ private Shell backgroundShell;
+ private Shell foregoundShell;
+
+ private Integer returnCode = null;
+ private boolean block = true;
+
+ private String title;
+
+ /** Tries to find a display */
+ private static Display getDisplay() {
+ try {
+ Display display = Display.getCurrent();
+ if (display != null)
+ return display;
+ else
+ return Display.getDefault();
+ } catch (Exception e) {
+ return Display.getCurrent();
+ }
+ }
+
+ public LightweightDialog(Shell parentShell) {
+ this.parentShell = parentShell;
+ }
+
+ public int open() {
+ if (foregoundShell != null)
+ throw new EclipseUiException("There is already a shell");
+ backgroundShell = new Shell(parentShell, SWT.ON_TOP);
+ backgroundShell.setFullScreen(true);
+ // if (parentShell != null) {
+ // backgroundShell.setBounds(parentShell.getBounds());
+ // } else
+ // backgroundShell.setMaximized(true);
+ backgroundShell.setAlpha(128);
+ backgroundShell.setBackground(getDisplay().getSystemColor(SWT.COLOR_BLACK));
+ foregoundShell = new Shell(backgroundShell, SWT.NO_TRIM | SWT.ON_TOP);
+ if (title != null)
+ setTitle(title);
+ foregoundShell.setLayout(new GridLayout());
+ foregoundShell.setSize(getInitialSize());
+ createDialogArea(foregoundShell);
+ // shell.pack();
+ // shell.layout();
+
+ Rectangle shellBounds = parentShell != null ? parentShell.getBounds() : Display.getCurrent().getBounds();// RAP
+ Point dialogSize = foregoundShell.getSize();
+ int x = shellBounds.x + (shellBounds.width - dialogSize.x) / 2;
+ int y = shellBounds.y + (shellBounds.height - dialogSize.y) / 2;
+ foregoundShell.setLocation(x, y);
+
+ foregoundShell.addShellListener(new ShellAdapter() {
+ private static final long serialVersionUID = -2701270481953688763L;
+
+ @Override
+ public void shellDeactivated(ShellEvent e) {
+ if (hasChildShells())
+ return;
+ if (returnCode == null)// not yet closed
+ closeShell(CANCEL);
+ }
+
+ @Override
+ public void shellClosed(ShellEvent e) {
+ notifyClose();
+ }
+
+ });
+
+ backgroundShell.open();
+ foregoundShell.open();
+ // after the foreground shell has been opened
+ backgroundShell.addFocusListener(new FocusListener() {
+ private static final long serialVersionUID = 3137408447474661070L;
+
+ @Override
+ public void focusLost(FocusEvent event) {
+ }
+
+ @Override
+ public void focusGained(FocusEvent event) {
+ if (hasChildShells())
+ return;
+ if (returnCode == null)// not yet closed
+ closeShell(CANCEL);
+ }
+ });
+
+ if (block) {
+ block();
+ }
+ if (returnCode == null)
+ returnCode = OK;
+ return returnCode;
+ }
+
+ public void block() {
+ try {
+ runEventLoop(foregoundShell);
+ } catch (ThreadDeath t) {
+ returnCode = CANCEL;
+ if (log.isTraceEnabled())
+ log.error("Thread death, canceling dialog", t);
+ } catch (Throwable t) {
+ returnCode = CANCEL;
+ log.error("Cannot open blocking lightweight dialog", t);
+ }
+ }
+
+ private boolean hasChildShells() {
+ if (foregoundShell == null)
+ return false;
+ return foregoundShell.getShells().length != 0;
+ }
+
+ // public synchronized int openAndWait() {
+ // open();
+ // while (returnCode == null)
+ // try {
+ // wait(100);
+ // } catch (InterruptedException e) {
+ // // silent
+ // }
+ // return returnCode;
+ // }
+
+ private synchronized void notifyClose() {
+ if (returnCode == null)
+ returnCode = CANCEL;
+ notifyAll();
+ }
+
+ protected void closeShell(int returnCode) {
+ this.returnCode = returnCode;
+ if (CANCEL == returnCode)
+ onCancel();
+ if (foregoundShell != null && !foregoundShell.isDisposed()) {
+ foregoundShell.close();
+ foregoundShell.dispose();
+ foregoundShell = null;
+ }
+
+ if (backgroundShell != null && !backgroundShell.isDisposed()) {
+ backgroundShell.close();
+ backgroundShell.dispose();
+ }
+ }
+
+ protected Point getInitialSize() {
+ // if (exception != null)
+ // return new Point(800, 600);
+ // else
+ return new Point(600, 400);
+ }
+
+ protected Control createDialogArea(Composite parent) {
+ Composite dialogarea = new Composite(parent, SWT.NONE);
+ dialogarea.setLayout(new GridLayout());
+ dialogarea.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
+ return dialogarea;
+ }
+
+ protected Shell getBackgroundShell() {
+ return backgroundShell;
+ }
+
+ protected Shell getForegoundShell() {
+ return foregoundShell;
+ }
+
+ public void setBlockOnOpen(boolean shouldBlock) {
+ block = shouldBlock;
+ }
+
+ public void pack() {
+ foregoundShell.pack();
+ }
+
+ private void runEventLoop(Shell loopShell) {
+ Display display;
+ if (foregoundShell == null) {
+ display = Display.getCurrent();
+ } else {
+ display = loopShell.getDisplay();
+ }
+
+ while (loopShell != null && !loopShell.isDisposed()) {
+ try {
+ if (!display.readAndDispatch()) {
+ display.sleep();
+ }
+ } catch (UnsupportedOperationException e) {
+ throw e;
+ } catch (Throwable e) {
+ handleException(e);
+ }
+ }
+ if (!display.isDisposed())
+ display.update();
+ }
+
+ protected void handleException(Throwable t) {
+ if (t instanceof ThreadDeath) {
+ // Don't catch ThreadDeath as this is a normal occurrence when
+ // the thread dies
+ throw (ThreadDeath) t;
+ }
+ // Try to keep running.
+ t.printStackTrace();
+ }
+
+ /** @return false, if the dialog should not be closed. */
+ protected boolean onCancel() {
+ return true;
+ }
+
+ public void setTitle(String title) {
+ this.title = title;
+ if (title != null && getForegoundShell() != null)
+ getForegoundShell().setText(title);
+ }
+
+ public Integer getReturnCode() {
+ return returnCode;
+ }
+
+}
\ No newline at end of file
projects / gpl / argeo-jcr.git / blobdiff