* The contents of a window is set using {@link #setContent(Component)} or by * using the {@link #Window(String, Component)} constructor. *
** A window can be positioned on the screen using absolute coordinates (pixels) * or set to be centered using {@link #center()} *
** The caption is displayed in the window header. *
** In Vaadin versions prior to 7.0.0, Window was also used as application level * windows. This function is now covered by the {@link UI} class. *
* * @author Vaadin Ltd. * @since 3.0 */ @SuppressWarnings({ "serial", "deprecation" }) public class Window extends Panel implements FocusNotifier, BlurNotifier { private WindowServerRpc rpc = new WindowServerRpc() { @Override public void click(MouseEventDetails mouseDetails) { fireEvent(new ClickEvent(Window.this, mouseDetails)); } @Override public void windowModeChanged(WindowMode newState) { setWindowMode(newState); } @Override public void windowMoved(int x, int y) { if (x != getState(false).positionX) { setPositionX(x); } if (y != getState(false).positionY) { setPositionY(y); } } }; /** * Holds registered CloseShortcut instances for query and later removal */ private List
* Window with greatest order position value is on the top and window with 0
* position value is on the bottom.
*/
private int orderPosition = -1;
/**
* Creates a new, empty window.
*/
public Window() {
this("", null);
}
/**
* Creates a new, empty window with a given title.
*
* @param caption
* the title of the window.
*/
public Window(String caption) {
this(caption, null);
}
/**
* Creates a new, empty window with the given content and title.
*
* @param caption
* the title of the window.
* @param content
* the contents of the window
*/
public Window(String caption, Component content) {
super(caption, content);
registerRpc(rpc);
setSizeUndefined();
setCloseShortcut(KeyCode.ESCAPE);
}
/* ********************************************************************* */
/*
* (non-Javadoc)
*
* @see com.vaadin.ui.Panel#paintContent(com.vaadin.server.PaintTarget)
*/
@Override
public synchronized void paintContent(PaintTarget target)
throws PaintException {
if (bringToFront != null) {
target.addAttribute("bringToFront", bringToFront.intValue());
bringToFront = null;
}
// Contents of the window panel is painted
super.paintContent(target);
}
/*
* (non-Javadoc)
*
* @see com.vaadin.ui.AbstractComponent#setParent(com.vaadin.server.
* ClientConnector )
*/
@Override
public void setParent(HasComponents parent) {
if (parent == null || parent instanceof UI) {
super.setParent(parent);
} else {
throw new IllegalArgumentException(
"A Window can only be added to a UI using UI.addWindow(Window window)");
}
}
/*
* (non-Javadoc)
*
* @see com.vaadin.ui.Panel#changeVariables(java.lang.Object, java.util.Map)
*/
@Override
public void changeVariables(Object source, Map
* By default, windows are removed from their respective UIs and thus
* visually closed on browser-side.
*
* To react to a window being closed (after it is closed), register a
* {@link CloseListener}.
*
* Window with position 0 is on the bottom, and window with greatest
* position is at the top. If window has no position (it's not yet attached
* or hidden) then position is {@code -1}.
*
* @see UI#addWindowOrderUpdateListener(com.vaadin.ui.UI.WindowOrderUpdateListener)
*
* @since 8.0
*
* @return window order position.
*/
public int getOrderPosition() {
return orderPosition;
}
/**
* Sets the distance of Window top border in pixels from top border of the
* containing (main window). Has effect only if in {@link WindowMode#NORMAL}
* mode.
*
* @param positionY
* the Distance of Window top border in pixels from top border of
* the containing (main window). or -1 if unspecified
*
* @since 4.0.0
*/
public void setPositionY(int positionY) {
getState().positionY = positionY;
getState().centered = false;
}
private static final Method WINDOW_CLOSE_METHOD;
static {
try {
WINDOW_CLOSE_METHOD = CloseListener.class
.getDeclaredMethod("windowClose", CloseEvent.class);
} catch (final NoSuchMethodException e) {
// This should never happen
throw new RuntimeException(
"Internal error, window close method not found");
}
}
public static class CloseEvent extends Component.Event {
/**
*
* @param source
*/
public CloseEvent(Component source) {
super(source);
}
/**
* Gets the Window.
*
* @return the window.
*/
public Window getWindow() {
return (Window) getSource();
}
}
/**
* Event which is fired when the window order position is changed.
*
* @see UI.WindowOrderUpdateEvent
*
* @author Vaadin Ltd
*
*/
public static class WindowOrderChangeEvent extends Component.Event {
private final int order;
public WindowOrderChangeEvent(Component source, int order) {
super(source);
this.order = order;
}
/**
* Gets the Window.
*
* @return the window
*/
public Window getWindow() {
return (Window) getSource();
}
/**
* Gets the new window order position.
*
* @return the new order position
*/
public int getOrder() {
return order;
}
}
/**
* An interface used for listening to Window order change events.
*
* @see UI.WindowOrderUpdateListener
*/
@FunctionalInterface
public interface WindowOrderChangeListener extends ConnectorEventListener {
public static final Method windowOrderChangeMethod = ReflectTools
.findMethod(WindowOrderChangeListener.class,
"windowOrderChanged", WindowOrderChangeEvent.class);
/**
* Called when the window order position is changed. Use
* {@link WindowOrderChangeEvent#getWindow()} to get a reference to the
* {@link Window} whose order position is changed. Use
* {@link WindowOrderChangeEvent#getOrder()} to get a new order
* position.
*
* @param event
*/
public void windowOrderChanged(WindowOrderChangeEvent event);
}
/**
* Adds a WindowOrderChangeListener to the window.
*
* The WindowOrderChangeEvent is fired when the order position is changed.
* It can happen when some window (this or other) is brought to front or
* detached.
*
* The other way to listen positions of all windows in UI is
* {@link UI#addWindowOrderUpdateListener(com.vaadin.ui.UI.WindowOrderUpdateListener)}
*
* @see UI#addWindowOrderUpdateListener(com.vaadin.ui.UI.WindowOrderUpdateListener)
*
* @param listener
* the WindowModeChangeListener to add.
* @since 8.0
*/
public Registration addWindowOrderChangeListener(
WindowOrderChangeListener listener) {
addListener(EventId.WINDOW_ORDER, WindowOrderChangeEvent.class,
listener, WindowOrderChangeListener.windowOrderChangeMethod);
return () -> removeListener(EventId.WINDOW_ORDER,
WindowOrderChangeEvent.class, listener);
}
protected void fireWindowOrderChange(Integer order) {
if (order == null || orderPosition != order) {
orderPosition = (order == null) ? -1 : order;
fireEvent(new Window.WindowOrderChangeEvent(this,
getOrderPosition()));
}
}
/**
* An interface used for listening to Window close events. Add the
* CloseListener to a window and
* {@link CloseListener#windowClose(CloseEvent)} will be called whenever the
* user closes the window.
*
*
* Since Vaadin 6.5, removing a window using {@link #removeWindow(Window)}
* fires the CloseListener.
*
* Since Vaadin 6.5, removing windows using {@link #removeWindow(Window)}
* does fire the CloseListener.
*
* For more information on CloseListeners see {@link CloseListener}.
*
* This method can only be called if this window connected a UI. Else an
* illegal state exception is thrown. Also if there are modal windows and
* this window is not modal, and illegal state exception is thrown.
*
*/
public void bringToFront() {
UI uI = getUI();
if (uI == null) {
throw new IllegalStateException(
"Window must be attached to parent before calling bringToFront method.");
}
int maxBringToFront = -1;
for (Window w : uI.getWindows()) {
if (!isModal() && w.isModal()) {
throw new IllegalStateException(
"The UI contains modal windows, non-modal window cannot be brought to front.");
}
if (w.bringToFront != null) {
maxBringToFront = Math.max(maxBringToFront,
w.bringToFront.intValue());
}
}
bringToFront = Integer.valueOf(maxBringToFront + 1);
markAsDirty();
}
/**
* Sets window modality. When a modal window is open, components outside
* that window cannot be accessed.
*
* Keyboard navigation is restricted by blocking the tab key at the top and
* bottom of the window by activating the tab stop function internally.
*
* @param modal
* true if modality is to be turned on
*/
public void setModal(boolean modal) {
getState().modal = modal;
center();
}
/**
* @return true if this window is modal.
*/
public boolean isModal() {
return getState(false).modal;
}
/**
* Sets window resizable.
*
* @param resizable
* true if resizability is to be turned on
*/
public void setResizable(boolean resizable) {
getState().resizable = resizable;
}
/**
*
* @return true if window is resizable by the end-user, otherwise false.
*/
public boolean isResizable() {
return getState(false).resizable;
}
/**
*
* @return true if a delay is used before recalculating sizes, false if
* sizes are recalculated immediately.
*/
public boolean isResizeLazy() {
return getState(false).resizeLazy;
}
/**
* Should resize operations be lazy, i.e. should there be a delay before
* layout sizes are recalculated. Speeds up resize operations in slow UIs
* with the penalty of slightly decreased usability.
*
* Note, some browser send false resize events for the browser window and
* are therefore always lazy.
*
* @param resizeLazy
* true to use a delay before recalculating sizes, false to
* calculate immediately.
*/
public void setResizeLazy(boolean resizeLazy) {
getState().resizeLazy = resizeLazy;
}
/**
* Sets this window to be centered relative to its parent window. Affects
* windows only. If the window is resized as a result of the size of its
* content changing, it will keep itself centered as long as its position is
* not explicitly changed programmatically or by the user.
*
* NOTE: This method has several issues as currently implemented.
* Please refer to http://dev.vaadin.com/ticket/8971 for details.
*/
public void center() {
getState().centered = true;
}
/**
* Returns the closable status of the window. If a window is closable, it
* typically shows an X in the upper right corner. Clicking on the X sends a
* close event to the server. Setting closable to false will remove the X
* from the window and prevent the user from closing the window.
*
* @return true if the window can be closed by the user.
*/
public boolean isClosable() {
return getState(false).closable;
}
/**
* Sets the closable status for the window. If a window is closable it
* typically shows an X in the upper right corner. Clicking on the X sends a
* close event to the server. Setting closable to false will remove the X
* from the window and prevent the user from closing the window.
*
* @param closable
* determines if the window can be closed by the user.
*/
public void setClosable(boolean closable) {
if (closable != isClosable()) {
getState().closable = closable;
}
}
/**
* Indicates whether a window can be dragged or not. By default a window is
* draggable.
*
* @return {@code true} if window is draggable; {@code false} if not
*/
public boolean isDraggable() {
return getState(false).draggable;
}
/**
* Enables or disables that a window can be dragged (moved) by the user. By
* default a window is draggable.
*
* Original description: Makes it possible to close the window by pressing
* the given {@link KeyCode} and (optional) {@link ModifierKey}s.
* This is the old way of removing the (single) keyboard close shortcut, and
* is retained only for exact backwards compatibility. For all new code, use
* the new keyboard shortcuts API: {@link #addCloseShortcut(int,int...)},
* {@link #removeCloseShortcut(int,int...)},
* {@link #removeAllCloseShortcuts()}, {@link #hasCloseShortcut(int,int...)}
* and {@link #getCloseShortcuts()}.
*
* @deprecated Use {@link #removeCloseShortcut(int, int...)} instead.
*/
@Deprecated
public void removeCloseShortcut() {
for (CloseShortcut sc : closeShortcuts) {
removeAction(sc);
}
closeShortcuts.clear();
addCloseShortcut(KeyCode.ESCAPE);
}
/**
* Adds a close shortcut - pressing this key while holding down all (if any)
* modifiers specified while this Window is in focus will close the Window.
*
* @since 7.6
* @param keyCode
* the keycode for invoking the shortcut
* @param modifiers
* the (optional) modifiers for invoking the shortcut. Can be set
* to null to be explicit about not having modifiers.
*/
public void addCloseShortcut(int keyCode, int... modifiers) {
// Ignore attempts to re-add existing shortcuts
if (hasCloseShortcut(keyCode, modifiers)) {
return;
}
// Actually add the shortcut
CloseShortcut shortcut = new CloseShortcut(this, keyCode, modifiers);
addAction(shortcut);
closeShortcuts.add(shortcut);
}
/**
* Removes a close shortcut previously added with
* {@link #addCloseShortcut(int, int...)}.
*
* @since 7.6
* @param keyCode
* the keycode for invoking the shortcut
* @param modifiers
* the (optional) modifiers for invoking the shortcut. Can be set
* to null to be explicit about not having modifiers.
*/
public void removeCloseShortcut(int keyCode, int... modifiers) {
for (CloseShortcut shortcut : closeShortcuts) {
if (shortcut.equals(keyCode, modifiers)) {
removeAction(shortcut);
closeShortcuts.remove(shortcut);
return;
}
}
}
/**
* Removes all close shortcuts. This includes the default ESCAPE shortcut.
* It is up to the user to add back any and all keyboard close shortcuts
* they may require. For more fine-grained control over shortcuts, use
* {@link #removeCloseShortcut(int, int...)}.
*
* @since 7.6
*/
public void removeAllCloseShortcuts() {
for (CloseShortcut shortcut : closeShortcuts) {
removeAction(shortcut);
}
closeShortcuts.clear();
}
/**
* Checks if a close window shortcut key has already been registered.
*
* @since 7.6
* @param keyCode
* the keycode for invoking the shortcut
* @param modifiers
* the (optional) modifiers for invoking the shortcut. Can be set
* to null to be explicit about not having modifiers.
* @return true, if an exactly matching shortcut has been registered.
*/
public boolean hasCloseShortcut(int keyCode, int... modifiers) {
for (CloseShortcut shortcut : closeShortcuts) {
if (shortcut.equals(keyCode, modifiers)) {
return true;
}
}
return false;
}
/**
* Returns an unmodifiable collection of {@link CloseShortcut} objects
* currently registered with this {@link Window}. This method is provided
* mainly so that users can implement their own serialization routines. To
* check if a certain combination of keys has been registered as a close
* shortcut, use the {@link #hasCloseShortcut(int, int...)} method instead.
*
* @since 7.6
* @return an unmodifiable Collection of CloseShortcut objects.
*/
public Collection
* This is meant to help users of assistive devices to not leaving the
* window unintentionally.
*
* For modal windows, this function is activated automatically, while
* preserving the stored value of tabStop.
*
* @param tabStop
* true to keep the focus inside the window when reaching the top
* or bottom, false (default) to allow leaving the window
*/
public void setTabStopEnabled(boolean tabStop) {
getState().assistiveTabStop = tabStop;
}
/**
* Get if it is prevented to leave a window with the tab key.
*
* @return true when the focus is limited to inside the window, false when
* focus can leave the window
*/
public boolean isTabStopEnabled() {
return getState(false).assistiveTabStop;
}
/**
* Sets the message that is provided to users of assistive devices when the
* user reaches the top of the window when leaving a window with the tab key
* is prevented.
*
* This message is not visible on the screen.
*
* @param topMessage
* String provided when the user navigates with Shift-Tab keys to
* the top of the window
*/
public void setTabStopTopAssistiveText(String topMessage) {
getState().assistiveTabStopTopText = topMessage;
}
/**
* Sets the message that is provided to users of assistive devices when the
* user reaches the bottom of the window when leaving a window with the tab
* key is prevented.
*
* This message is not visible on the screen.
*
* @param bottomMessage
* String provided when the user navigates with the Tab key to
* the bottom of the window
*/
public void setTabStopBottomAssistiveText(String bottomMessage) {
getState().assistiveTabStopBottomText = bottomMessage;
}
/**
* Gets the message that is provided to users of assistive devices when the
* user reaches the top of the window when leaving a window with the tab key
* is prevented.
*
* @return the top message
*/
public String getTabStopTopAssistiveText() {
return getState(false).assistiveTabStopTopText;
}
/**
* Gets the message that is provided to users of assistive devices when the
* user reaches the bottom of the window when leaving a window with the tab
* key is prevented.
*
* @return the bottom message
*/
public String getTabStopBottomAssistiveText() {
return getState(false).assistiveTabStopBottomText;
}
@Override
public void readDesign(Element design, DesignContext context) {
super.readDesign(design, context);
if (design.hasAttr("center")) {
center();
}
if (design.hasAttr("position")) {
String[] position = design.attr("position").split(",");
setPositionX(Integer.parseInt(position[0]));
setPositionY(Integer.parseInt(position[1]));
}
// Parse shortcuts if defined, otherwise rely on default behavior
if (design.hasAttr("close-shortcut")) {
// Parse shortcuts
String[] shortcutStrings = DesignAttributeHandler
.readAttribute("close-shortcut", design.attributes(),
String.class)
.split("\\s+");
removeAllCloseShortcuts();
for (String part : shortcutStrings) {
if (!part.isEmpty()) {
ShortcutAction shortcut = DesignAttributeHandler
.getFormatter()
.parse(part.trim(), ShortcutAction.class);
addCloseShortcut(shortcut.getKeyCode(),
shortcut.getModifiers());
}
}
}
}
/**
* Reads the content and possible assistive descriptions from the list of
* child elements of a design. If an element has an
* {@code :assistive-description} attribute, adds the parsed component to
* the list of components used as the assistive description of this Window.
* Otherwise, sets the component as the content of this Window. If there are
* multiple non-description elements, throws a DesignException.
*
* @param children
* child elements in a design
* @param context
* the DesignContext instance used to parse the design
*
* @throws DesignException
* if there are multiple non-description child elements
* @throws DesignException
* if a child element could not be parsed as a Component
*
* @see #setContent(Component)
* @see #setAssistiveDescription(Component...)
*/
@Override
protected void readDesignChildren(Elements children,
DesignContext context) {
List
* Note that this shortcut only reacts while the window has focus, closing
* itself - if you want to close a window from a UI, use
* {@link UI#addAction(com.vaadin.event.Action)} of the UI instead.
*
* @param keyCode
* the keycode for invoking the shortcut
* @param modifiers
* the (optional) modifiers for invoking the shortcut. Can be set
* to null to be explicit about not having modifiers.
*
* @deprecated Use {@link #addCloseShortcut(int, int...)} instead.
*/
@Deprecated
public void setCloseShortcut(int keyCode, int... modifiers) {
removeCloseShortcut();
addCloseShortcut(keyCode, modifiers);
}
/**
* Removes all keyboard shortcuts previously set with
* {@link #setCloseShortcut(int, int...)} and
* {@link #addCloseShortcut(int, int...)}, then adds the default
* {@link KeyCode#ESCAPE} shortcut.
*
*
*
*/
public static class CloseShortcut extends ShortcutListener {
protected Window window;
/**
* Creates a keyboard shortcut for closing the given window using the
* shorthand notation defined in {@link ShortcutAction}.
*
* @param window
* to be closed when the shortcut is invoked
* @param shorthandCaption
* the caption with shortcut keycode and modifiers indicated
*/
public CloseShortcut(Window window, String shorthandCaption) {
super(shorthandCaption);
this.window = window;
}
/**
* Creates a keyboard shortcut for closing the given window using the
* given {@link KeyCode} and {@link ModifierKey}s.
*
* @param window
* to be closed when the shortcut is invoked
* @param keyCode
* KeyCode to react to
* @param modifiers
* optional modifiers for shortcut
*/
public CloseShortcut(Window window, int keyCode, int... modifiers) {
super(null, keyCode, modifiers);
this.window = window;
}
/**
* Creates a keyboard shortcut for closing the given window using the
* given {@link KeyCode}.
*
* @param window
* to be closed when the shortcut is invoked
* @param keyCode
* KeyCode to react to
*/
public CloseShortcut(Window window, int keyCode) {
this(window, keyCode, null);
}
@Override
public void handleAction(Object sender, Object target) {
if (window.isClosable()) {
window.close();
}
}
public boolean equals(int keyCode, int... modifiers) {
if (keyCode != getKeyCode()) {
return false;
}
if (getModifiers() != null) {
int[] mods = null;
if (modifiers != null) {
// Modifiers provided by the parent ShortcutAction class
// are guaranteed to be sorted. We still need to sort
// the modifiers passed in as argument.
mods = Arrays.copyOf(modifiers, modifiers.length);
Arrays.sort(mods);
}
return Arrays.equals(mods, getModifiers());
}
return true;
}
}
/*
* (non-Javadoc)
*
* @see
* com.vaadin.event.FieldEvents.FocusNotifier#addFocusListener(com.vaadin
* .event.FieldEvents.FocusListener)
*/
@Override
public Registration addFocusListener(FocusListener listener) {
return addListener(FocusEvent.EVENT_ID, FocusEvent.class, listener,
FocusListener.focusMethod);
}
/*
* (non-Javadoc)
*
* @see
* com.vaadin.event.FieldEvents.BlurNotifier#addBlurListener(com.vaadin.
* event.FieldEvents.BlurListener)
*/
@Override
public Registration addBlurListener(BlurListener listener) {
return addListener(BlurEvent.EVENT_ID, BlurEvent.class, listener,
BlurListener.blurMethod);
}
/**
* {@inheritDoc}
*
* Cause the window to be brought on top of other windows and gain keyboard
* focus.
*/
@Override
public void focus() {
/*
* When focusing a window it basically means it should be brought to the
* front. Instead of just moving the keyboard focus we focus the window
* and bring it top-most.
*/
super.focus();
bringToFront();
}
@Override
protected WindowState getState() {
return (WindowState) super.getState();
}
@Override
protected WindowState getState(boolean markAsDirty) {
return (WindowState) super.getState(markAsDirty);
}
/**
* Allows to specify which components contain the description for the
* window. Text contained in these components will be read by assistive
* devices when it is opened.
*
* @param components
* the components to use as description
*/
public void setAssistiveDescription(Component... components) {
if (components == null) {
throw new IllegalArgumentException(
"Parameter connectors must be non-null");
} else {
getState().contentDescription = components;
}
}
/**
* Gets the components that are used as assistive description. Text
* contained in these components will be read by assistive devices when the
* window is opened.
*
* @return array of previously set components
*/
public Component[] getAssistiveDescription() {
Connector[] contentDescription = getState(false).contentDescription;
if (contentDescription == null) {
return null;
}
Component[] target = new Component[contentDescription.length];
System.arraycopy(contentDescription, 0, target, 0,
contentDescription.length);
return target;
}
/**
* Sets the accessibility prefix for the window caption.
*
* This prefix is read to assistive device users before the window caption,
* but not visible on the page.
*
* @param prefix
* String that is placed before the window caption
*/
public void setAssistivePrefix(String prefix) {
getState().assistivePrefix = prefix;
}
/**
* Gets the accessibility prefix for the window caption.
*
* This prefix is read to assistive device users before the window caption,
* but not visible on the page.
*
* @return The accessibility prefix
*/
public String getAssistivePrefix() {
return getState(false).assistivePrefix;
}
/**
* Sets the accessibility postfix for the window caption.
*
* This postfix is read to assistive device users after the window caption,
* but not visible on the page.
*
* @param assistivePostfix
* String that is placed after the window caption
*/
public void setAssistivePostfix(String assistivePostfix) {
getState().assistivePostfix = assistivePostfix;
}
/**
* Gets the accessibility postfix for the window caption.
*
* This postfix is read to assistive device users after the window caption,
* but not visible on the page.
*
* @return The accessibility postfix
*/
public String getAssistivePostfix() {
return getState(false).assistivePostfix;
}
/**
* Sets the WAI-ARIA role the window.
*
* This role defines how an assistive device handles a window. Available
* roles are alertdialog and dialog (@see
* Roles
* Model).
*
* The default role is dialog.
*
* @param role
* WAI-ARIA role to set for the window
*/
public void setAssistiveRole(WindowRole role) {
getState().role = role;
}
/**
* Gets the WAI-ARIA role the window.
*
* This role defines how an assistive device handles a window. Available
* roles are alertdialog and dialog (@see
* Roles
* Model).
*
* @return WAI-ARIA role set for the window
*/
public WindowRole getAssistiveRole() {
return getState(false).role;
}
/**
* Set if it should be prevented to set the focus to a component outside a
* non-modal window with the tab key.
*
* // within the window using helper
* window.setCloseShortcut(KeyCode.ESCAPE, null);
*
* // or globally
* getUI().addAction(new Window.CloseShortcut(window, KeyCode.ESCAPE));
*
*