/*
* Copyright 2000-2014 Vaadin Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.vaadin.ui;
import java.io.Serializable;
import java.lang.reflect.Method;
import java.util.Map;
import com.vaadin.event.FieldEvents.BlurEvent;
import com.vaadin.event.FieldEvents.BlurListener;
import com.vaadin.event.FieldEvents.BlurNotifier;
import com.vaadin.event.FieldEvents.FocusEvent;
import com.vaadin.event.FieldEvents.FocusListener;
import com.vaadin.event.FieldEvents.FocusNotifier;
import com.vaadin.event.MouseEvents.ClickEvent;
import com.vaadin.event.ShortcutAction;
import com.vaadin.event.ShortcutAction.KeyCode;
import com.vaadin.event.ShortcutAction.ModifierKey;
import com.vaadin.event.ShortcutListener;
import com.vaadin.server.PaintException;
import com.vaadin.server.PaintTarget;
import com.vaadin.shared.Connector;
import com.vaadin.shared.MouseEventDetails;
import com.vaadin.shared.ui.window.WindowMode;
import com.vaadin.shared.ui.window.WindowRole;
import com.vaadin.shared.ui.window.WindowServerRpc;
import com.vaadin.shared.ui.window.WindowState;
import com.vaadin.util.ReflectTools;
/**
* A component that represents a floating popup window that can be added to a
* {@link UI}. A window is added to a {@code UI} using
* {@link UI#addWindow(Window)}. </p>
* <p>
* The contents of a window is set using {@link #setContent(Component)} or by
* using the {@link #Window(String, Component)} constructor.
* </p>
* <p>
* A window can be positioned on the screen using absolute coordinates (pixels)
* or set to be centered using {@link #center()}
* </p>
* <p>
* The caption is displayed in the window header.
* </p>
* <p>
* 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.
* </p>
*
* @author Vaadin Ltd.
* @since 3.0
*/
@SuppressWarnings("serial")
public class Window extends Panel implements FocusNotifier, BlurNotifier,
LegacyComponent {
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);
}
}
};
/**
* 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();
}
/* ********************************************************************* */
/*
* (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<String, Object> variables) {
// TODO Are these for top level windows or sub windows?
boolean sizeHasChanged = false;
// size is handled in super class, but resize events only in windows ->
// so detect if size change occurs before super.changeVariables()
if (variables.containsKey("height")
&& (getHeightUnits() != Unit.PIXELS || (Integer) variables
.get("height") != getHeight())) {
sizeHasChanged = true;
}
if (variables.containsKey("width")
&& (getWidthUnits() != Unit.PIXELS || (Integer) variables
.get("width") != getWidth())) {
sizeHasChanged = true;
}
super.changeVariables(source, variables);
// Positioning
final Integer positionx = (Integer) variables.get("positionx");
if (positionx != null) {
final int x = positionx.intValue();
// This is information from the client so it is already using the
// position. No need to repaint.
setPositionX(x < 0 ? -1 : x);
}
final Integer positiony = (Integer) variables.get("positiony");
if (positiony != null) {
final int y = positiony.intValue();
// This is information from the client so it is already using the
// position. No need to repaint.
setPositionY(y < 0 ? -1 : y);
}
if (isClosable()) {
// Closing
final Boolean close = (Boolean) variables.get("close");
if (close != null && close.booleanValue()) {
close();
}
}
// fire event if size has really changed
if (sizeHasChanged) {
fireResize();
}
if (variables.containsKey(FocusEvent.EVENT_ID)) {
fireEvent(new FocusEvent(this));
} else if (variables.containsKey(BlurEvent.EVENT_ID)) {
fireEvent(new BlurEvent(this));
}
}
/**
* Method that handles window closing (from UI).
*
* <p>
* By default, windows are removed from their respective UIs and thus
* visually closed on browser-side.
* </p>
*
* <p>
* To react to a window being closed (after it is closed), register a
* {@link CloseListener}.
* </p>
*/
public void close() {
UI uI = getUI();
// Don't do anything if not attached to a UI
if (uI != null) {
// window is removed from the UI
uI.removeWindow(this);
}
}
/**
* Gets the distance of Window left border in pixels from left border of the
* containing (main window) when the window is in {@link WindowMode#NORMAL}.
*
* @return the Distance of Window left border in pixels from left border of
* the containing (main window).or -1 if unspecified
* @since 4.0.0
*/
public int getPositionX() {
return getState(false).positionX;
}
/**
* Sets the distance of Window left border in pixels from left border of the
* containing (main window). Has effect only if in {@link WindowMode#NORMAL}
* mode.
*
* @param positionX
* the Distance of Window left border in pixels from left border
* of the containing (main window). or -1 if unspecified.
* @since 4.0.0
*/
public void setPositionX(int positionX) {
getState().positionX = positionX;
getState().centered = false;
}
/**
* Gets the distance of Window top border in pixels from top border of the
* containing (main window) when the window is in {@link WindowMode#NORMAL}
* state, or when next set to that state.
*
* @return Distance of Window top border in pixels from top border of the
* containing (main window). or -1 if unspecified
*
* @since 4.0.0
*/
public int getPositionY() {
return getState(false).positionY;
}
/**
* 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", new Class[] { CloseEvent.class });
} catch (final java.lang.NoSuchMethodException e) {
// This should never happen
throw new java.lang.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();
}
}
/**
* 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.
*
* <p>
* Since Vaadin 6.5, removing a window using {@link #removeWindow(Window)}
* fires the CloseListener.
* </p>
*/
public interface CloseListener extends Serializable {
/**
* Called when the user closes a window. Use
* {@link CloseEvent#getWindow()} to get a reference to the
* {@link Window} that was closed.
*
* @param e
* Event containing
*/
public void windowClose(CloseEvent e);
}
/**
* Adds a CloseListener to the window.
*
* For a window the CloseListener is fired when the user closes it (clicks
* on the close button).
*
* For a browser level window the CloseListener is fired when the browser
* level window is closed. Note that closing a browser level window does not
* mean it will be destroyed. Also note that Opera does not send events like
* all other browsers and therefore the close listener might not be called
* if Opera is used.
*
* <p>
* Since Vaadin 6.5, removing windows using {@link #removeWindow(Window)}
* does fire the CloseListener.
* </p>
*
* @param listener
* the CloseListener to add.
*/
public void addCloseListener(CloseListener listener) {
addListener(CloseEvent.class, listener, WINDOW_CLOSE_METHOD);
}
/**
* @deprecated As of 7.0, replaced by
* {@link #addCloseListener(CloseListener)}
**/
@Deprecated
public void addListener(CloseListener listener) {
addCloseListener(listener);
}
/**
* Removes the CloseListener from the window.
*
* <p>
* For more information on CloseListeners see {@link CloseListener}.
* </p>
*
* @param listener
* the CloseListener to remove.
*/
public void removeCloseListener(CloseListener listener) {
removeListener(CloseEvent.class, listener, WINDOW_CLOSE_METHOD);
}
/**
* @deprecated As of 7.0, replaced by
* {@link #removeCloseListener(CloseListener)}
**/
@Deprecated
public void removeListener(CloseListener listener) {
removeCloseListener(listener);
}
protected void fireClose() {
fireEvent(new Window.CloseEvent(this));
}
/**
* Event which is fired when the mode of the Window changes.
*
* @author Vaadin Ltd
* @since 7.1
*
*/
public static class WindowModeChangeEvent extends Component.Event {
private final WindowMode windowMode;
/**
*
* @param source
*/
public WindowModeChangeEvent(Component source, WindowMode windowMode) {
super(source);
this.windowMode = windowMode;
}
/**
* Gets the Window.
*
* @return the window
*/
public Window getWindow() {
return (Window) getSource();
}
/**
* Gets the new window mode.
*
* @return the new mode
*/
public WindowMode getWindowMode() {
return windowMode;
}
}
/**
* An interface used for listening to Window maximize / restore events. Add
* the WindowModeChangeListener to a window and
* {@link WindowModeChangeListener#windowModeChanged(WindowModeChangeEvent)}
* will be called whenever the window is maximized (
* {@link WindowMode#MAXIMIZED}) or restored ({@link WindowMode#NORMAL} ).
*/
public interface WindowModeChangeListener extends Serializable {
public static final Method windowModeChangeMethod = ReflectTools
.findMethod(WindowModeChangeListener.class,
"windowModeChanged", WindowModeChangeEvent.class);
/**
* Called when the user maximizes / restores a window. Use
* {@link WindowModeChangeEvent#getWindow()} to get a reference to the
* {@link Window} that was maximized / restored. Use
* {@link WindowModeChangeEvent#getWindowMode()} to get a reference to
* the new state.
*
* @param event
*/
public void windowModeChanged(WindowModeChangeEvent event);
}
/**
* Adds a WindowModeChangeListener to the window.
*
* The WindowModeChangeEvent is fired when the user changed the display
* state by clicking the maximize/restore button or by double clicking on
* the window header. The event is also fired if the state is changed using
* {@link #setWindowMode(WindowMode)}.
*
* @param listener
* the WindowModeChangeListener to add.
*/
public void addWindowModeChangeListener(WindowModeChangeListener listener) {
addListener(WindowModeChangeEvent.class, listener,
WindowModeChangeListener.windowModeChangeMethod);
}
/**
* Removes the WindowModeChangeListener from the window.
*
* @param listener
* the WindowModeChangeListener to remove.
*/
public void removeWindowModeChangeListener(WindowModeChangeListener listener) {
removeListener(WindowModeChangeEvent.class, listener,
WindowModeChangeListener.windowModeChangeMethod);
}
protected void fireWindowWindowModeChange() {
fireEvent(new Window.WindowModeChangeEvent(this, getState().windowMode));
}
/**
* Method for the resize event.
*/
private static final Method WINDOW_RESIZE_METHOD;
static {
try {
WINDOW_RESIZE_METHOD = ResizeListener.class.getDeclaredMethod(
"windowResized", new Class[] { ResizeEvent.class });
} catch (final java.lang.NoSuchMethodException e) {
// This should never happen
throw new java.lang.RuntimeException(
"Internal error, window resized method not found");
}
}
/**
* Resize events are fired whenever the client-side fires a resize-event
* (e.g. the browser window is resized). The frequency may vary across
* browsers.
*/
public static class ResizeEvent extends Component.Event {
/**
*
* @param source
*/
public ResizeEvent(Component source) {
super(source);
}
/**
* Get the window form which this event originated
*
* @return the window
*/
public Window getWindow() {
return (Window) getSource();
}
}
/**
* Listener for window resize events.
*
* @see com.vaadin.ui.Window.ResizeEvent
*/
public interface ResizeListener extends Serializable {
public void windowResized(ResizeEvent e);
}
/**
* Add a resize listener.
*
* @param listener
*/
public void addResizeListener(ResizeListener listener) {
addListener(ResizeEvent.class, listener, WINDOW_RESIZE_METHOD);
}
/**
* @deprecated As of 7.0, replaced by
* {@link #addResizeListener(ResizeListener)}
**/
@Deprecated
public void addListener(ResizeListener listener) {
addResizeListener(listener);
}
/**
* Remove a resize listener.
*
* @param listener
*/
public void removeResizeListener(ResizeListener listener) {
removeListener(ResizeEvent.class, listener);
}
/**
* @deprecated As of 7.0, replaced by
* {@link #removeResizeListener(ResizeListener)}
**/
@Deprecated
public void removeListener(ResizeListener listener) {
removeResizeListener(listener);
}
/**
* Fire the resize event.
*/
protected void fireResize() {
fireEvent(new ResizeEvent(this));
}
/**
* Used to keep the right order of windows if multiple windows are brought
* to front in a single changeset. If this is not used, the order is quite
* random (depends on the order getting to dirty list. e.g. which window got
* variable changes).
*/
private Integer bringToFront = null;
/**
* If there are currently several windows visible, calling this method makes
* this window topmost.
* <p>
* 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.
* <p>
*/
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.
* <p>
* 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.
* <p>
* <b>NOTE:</b> 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.
*
* Note! For historical reasons readonly controls the closability of the
* window and therefore readonly and closable affect each other. Setting
* readonly to true will set closable to false and vice versa.
* <p/>
*
* @return true if the window can be closed by the user.
*/
public boolean isClosable() {
return !isReadOnly();
}
/**
* 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.
*
* Note! For historical reasons readonly controls the closability of the
* window and therefore readonly and closable affect each other. Setting
* readonly to true will set closable to false and vice versa.
* <p/>
*
* @param closable
* determines if the window can be closed by the user.
*/
public void setClosable(boolean closable) {
setReadOnly(!closable);
}
/**
* Indicates whether a window can be dragged or not. By default a window is
* draggable.
* <p/>
*
* @param draggable
* true if the window can be dragged by the user
*/
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.
* <p/>
*
* @param draggable
* true if the window can be dragged by the user
*/
public void setDraggable(boolean draggable) {
getState().draggable = draggable;
}
/**
* Gets the current mode of the window.
*
* @see WindowMode
* @return the mode of the window.
*/
public WindowMode getWindowMode() {
return getState(false).windowMode;
}
/**
* Sets the mode for the window
*
* @see WindowMode
* @param windowMode
* The new mode
*/
public void setWindowMode(WindowMode windowMode) {
if (windowMode != getWindowMode()) {
getState().windowMode = windowMode;
fireWindowWindowModeChange();
}
}
/*
* Actions
*/
protected CloseShortcut closeShortcut;
/**
* Makes is possible to close the window by pressing the given
* {@link KeyCode} and (optional) {@link ModifierKey}s.<br/>
* 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, null for
* none
*/
public void setCloseShortcut(int keyCode, int... modifiers) {
if (closeShortcut != null) {
removeAction(closeShortcut);
}
closeShortcut = new CloseShortcut(this, keyCode, modifiers);
addAction(closeShortcut);
}
/**
* Removes the keyboard shortcut previously set with
* {@link #setCloseShortcut(int, int...)}.
*/
public void removeCloseShortcut() {
if (closeShortcut != null) {
removeAction(closeShortcut);
closeShortcut = null;
}
}
/**
* A {@link ShortcutListener} specifically made to define a keyboard
* shortcut that closes the window.
*
* <pre>
* <code>
* // within the window using helper
* window.setCloseShortcut(KeyCode.ESCAPE, null);
*
* // or globally
* getUI().addAction(new Window.CloseShortcut(window, KeyCode.ESCAPE));
* </code>
* </pre>
*
*/
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) {
window.close();
}
}
/*
* (non-Javadoc)
*
* @see
* com.vaadin.event.FieldEvents.FocusNotifier#addFocusListener(com.vaadin
* .event.FieldEvents.FocusListener)
*/
@Override
public void addFocusListener(FocusListener listener) {
addListener(FocusEvent.EVENT_ID, FocusEvent.class, listener,
FocusListener.focusMethod);
}
/**
* @deprecated As of 7.0, replaced by
* {@link #addFocusListener(FocusListener)}
**/
@Override
@Deprecated
public void addListener(FocusListener listener) {
addFocusListener(listener);
}
@Override
public void removeFocusListener(FocusListener listener) {
removeListener(FocusEvent.EVENT_ID, FocusEvent.class, listener);
}
/**
* @deprecated As of 7.0, replaced by
* {@link #removeFocusListener(FocusListener)}
**/
@Override
@Deprecated
public void removeListener(FocusListener listener) {
removeFocusListener(listener);
}
/*
* (non-Javadoc)
*
* @see
* com.vaadin.event.FieldEvents.BlurNotifier#addBlurListener(com.vaadin.
* event.FieldEvents.BlurListener)
*/
@Override
public void addBlurListener(BlurListener listener) {
addListener(BlurEvent.EVENT_ID, BlurEvent.class, listener,
BlurListener.blurMethod);
}
/**
* @deprecated As of 7.0, replaced by {@link #addBlurListener(BlurListener)}
**/
@Override
@Deprecated
public void addListener(BlurListener listener) {
addBlurListener(listener);
}
@Override
public void removeBlurListener(BlurListener listener) {
removeListener(BlurEvent.EVENT_ID, BlurEvent.class, listener);
}
/**
* @deprecated As of 7.0, replaced by
* {@link #removeBlurListener(BlurListener)}
**/
@Override
@Deprecated
public void removeListener(BlurListener listener) {
removeBlurListener(listener);
}
/**
* {@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 prefix
* 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 <a
* href="http://www.w3.org/TR/2011/CR-wai-aria-20110118/roles">Roles
* Model</a>).
*
* 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 <a
* href="http://www.w3.org/TR/2011/CR-wai-aria-20110118/roles">Roles
* Model</a>).
*
* @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.
* <p>
* This is meant to help users of assistive devices to not leaving the
* window unintentionally.
* <p>
* 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.
* <p>
* 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.
* <p>
* 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;
}
}