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
}
	/**
	 * Sets the value of this page's container name field, or stores it for
	 * future use if this page's controls do not exist yet.
	 * 
	 * @param path
	 *            the full path to the container
	 */
	public void setContainerFullPath(IPath path) {
		if (resourceGroup == null) {
			initialContainerFullPath = path;
		} else {
			resourceGroup.setContainerFullPath(path);
		}
	}
	/**
	 * Sets the value of this page's file name field, or stores it for future
	 * use if this page's controls do not exist yet.
	 * 
	 * @param value
	 *            new file name
	 */
	public void setFileName(String value) {
		if (resourceGroup == null) {
			initialFileName = value;
		} else {
			resourceGroup.setResource(value);
		}
	}
	/**