Bug 17826 [Wizards] New folder wizard is very large if you are creating the folder in a container with a very long path
F1 1) Create a folder with a very long name 2) Select the folder and open the new folder wizard, it is very wide. Similar with new file The Java creation wizards do not have this problem.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/misc/ResourceAndContainerGroup.java
/**
     * Gives focus to the resource name field and selects its contents
     */
    public void setFocus() {
        
        resourceNameField.setSelection(0, resourceNameField.getText().length());
        resourceNameField.setFocus();
    }
    /**
     * Sets the value of this page's resource name.
     *
     * @param value new value
     */
    public void setResource(String value) {
        resourceNameField.setText(value);
        validateControls();
    }
    /**
     * Returns a <code>boolean</code> indicating whether a container name represents
     * a valid container resource in the workbench.  An error message is stored for
     * future reference if the name does not represent a valid container.
     *
     * @return <code>boolean</code> indicating validity of the container name
     */
    protected boolean validateContainer() {
        IPath path = containerGroup.getContainerFullPath();
        if (path == null) {
            problemType = PROBLEM_CONTAINER_EMPTY;
            problemMessage = IDEWorkbenchMessages.ResourceGroup_folderEmpty;
            return false;