Bug 219901 [Undo] new file creation subjec to Undo (file deleted without warning)
when creating a new file by right clicking on your project in the project explorer new->file this action is put on the undo/redo stack. Pressing Ctrl-Z to undo this action will thus delete your file. As this stack is separate from the stack in the editor , one can create a new file, work for a long time, then inadvertently press ctrl-z to undo a code change while having the focus on the project explorer and irrevocably lose their file. Redo will create a new EMPTY file; the work is gone, forever. This appears to only work for the "new file", not for "new->source file" etc. Although some may perceive this as a feature, it is hard to imagine a scenario where ctrl-z should permanently delete a file without warning.
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/dialogs/WizardNewFileCreationPage.java
* <p>
	 * Subclasses may reimplement.
	 * </p>
	 * 
	 * @return the label to display in the file name specification visual
	 *         component group
	 */
	protected String getNewFileLabel() {
		return IDEWorkbenchMessages.WizardNewFileCreationPage_fileLabel;
	}
	/**
	 * Shows/hides the advanced option widgets.
	 */
	protected void handleAdvancedButtonSelect() {
		Shell shell = getShell();
		Point shellSize = shell.getSize();
		Composite composite = (Composite) getControl();
		if (linkedResourceComposite != null) {
			linkedResourceComposite.dispose();
			linkedResourceComposite = null;
			composite.layout();
			shell.setSize(shellSize.x, shellSize.y - linkedResourceGroupHeight);
			advancedButton.setText(IDEWorkbenchMessages.showAdvanced);
		} else {
			linkedResourceComposite = linkedResourceGroup
					.createContents(linkedResourceParent);
			if (linkedResourceGroupHeight == -1) {
				Point groupSize = linkedResourceComposite.computeSize(
						SWT.DEFAULT, SWT.DEFAULT, true);
				linkedResourceGroupHeight = groupSize.y;