JDK14/Java14源码在线阅读
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* published by the Free Software Foundation. Oracle designates this
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*
* This code is distributed in the hope that it will be useful, but WITHOUT
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* accompanied this code).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
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*
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package java.awt;
import java.awt.event.KeyEvent;
import java.awt.event.WindowEvent;
import java.awt.peer.FramePeer;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Vector;
import javax.accessibility.AccessibleContext;
import javax.accessibility.AccessibleRole;
import javax.accessibility.AccessibleState;
import javax.accessibility.AccessibleStateSet;
import javax.swing.WindowConstants;
import sun.awt.AWTAccessor;
import sun.awt.SunToolkit;
/**
* A {@code Frame} is a top-level window with a title and a border.
* <p>
* The size of the frame includes any area designated for the
* border. The dimensions of the border area may be obtained
* using the {@code getInsets} method, however, since
* these dimensions are platform-dependent, a valid insets
* value cannot be obtained until the frame is made displayable
* by either calling {@code pack} or {@code show}.
* Since the border area is included in the overall size of the
* frame, the border effectively obscures a portion of the frame,
* constraining the area available for rendering and/or displaying
* subcomponents to the rectangle which has an upper-left corner
* location of {@code (insets.left, insets.top)}, and has a size of
* {@code width - (insets.left + insets.right)} by
* {@code height - (insets.top + insets.bottom)}.
* <p>
* The default layout for a frame is {@code BorderLayout}.
* <p>
* A frame may have its native decorations (i.e. {@code Frame}
* and {@code Titlebar}) turned off
* with {@code setUndecorated}. This can only be done while the frame
* is not {@link Component#isDisplayable() displayable}.
* <p>
* In a multi-screen environment, you can create a {@code Frame}
* on a different screen device by constructing the {@code Frame}
* with {@link #Frame(GraphicsConfiguration)} or
* {@link #Frame(String title, GraphicsConfiguration)}. The
* {@code GraphicsConfiguration} object is one of the
* {@code GraphicsConfiguration} objects of the target screen
* device.
* <p>
* In a virtual device multi-screen environment in which the desktop
* area could span multiple physical screen devices, the bounds of all
* configurations are relative to the virtual-coordinate system. The
* origin of the virtual-coordinate system is at the upper left-hand
* corner of the primary physical screen. Depending on the location
* of the primary screen in the virtual device, negative coordinates
* are possible, as shown in the following figure.
* <p>
* <img src="doc-files/MultiScreen.gif" alt="Diagram of virtual device
* encompassing three physical screens and one primary physical screen. The
* primary physical screen shows (0,0) coords while a different physical screen
* shows (-80,-100) coords." style="margin: 7px 10px;">
* <p>
* In such an environment, when calling {@code setLocation},
* you must pass a virtual coordinate to this method. Similarly,
* calling {@code getLocationOnScreen} on a {@code Frame}
* returns virtual device coordinates. Call the {@code getBounds}
* method of a {@code GraphicsConfiguration} to find its origin in
* the virtual coordinate system.
* <p>
* The following code sets the
* location of the {@code Frame} at (10, 10) relative
* to the origin of the physical screen of the corresponding
* {@code GraphicsConfiguration}. If the bounds of the
* {@code GraphicsConfiguration} is not taken into account, the
* {@code Frame} location would be set at (10, 10) relative to the
* virtual-coordinate system and would appear on the primary physical
* screen, which might be different from the physical screen of the
* specified {@code GraphicsConfiguration}.
*
* <pre>
* Frame f = new Frame(GraphicsConfiguration gc);
* Rectangle bounds = gc.getBounds();
* f.setLocation(10 + bounds.x, 10 + bounds.y);
* </pre>
*
* <p>
* Frames are capable of generating the following types of
* {@code WindowEvent}s:
* <ul>
* <li>{@code WINDOW_OPENED}
* <li>{@code WINDOW_CLOSING}:
* <br>If the program doesn't
* explicitly hide or dispose the window while processing
* this event, the window close operation is canceled.
* <li>{@code WINDOW_CLOSED}
* <li>{@code WINDOW_ICONIFIED}
* <li>{@code WINDOW_DEICONIFIED}
* <li>{@code WINDOW_ACTIVATED}
* <li>{@code WINDOW_DEACTIVATED}
* <li>{@code WINDOW_GAINED_FOCUS}
* <li>{@code WINDOW_LOST_FOCUS}
* <li>{@code WINDOW_STATE_CHANGED}
* </ul>
*
* @author Sami Shaio
* @see WindowEvent
* @see Window#addWindowListener
* @since 1.0
*/
public class Frame extends Window implements MenuContainer {
/* Note: These are being obsoleted; programs should use the Cursor class
* variables going forward. See Cursor and Component.setCursor.
*/
/**
* @deprecated replaced by {@code Cursor.DEFAULT_CURSOR}.
*/
@Deprecated
public static final int DEFAULT_CURSOR = Cursor.DEFAULT_CURSOR;
/**
* @deprecated replaced by {@code Cursor.CROSSHAIR_CURSOR}.
*/
@Deprecated
public static final int CROSSHAIR_CURSOR = Cursor.CROSSHAIR_CURSOR;
/**
* @deprecated replaced by {@code Cursor.TEXT_CURSOR}.
*/
@Deprecated
public static final int TEXT_CURSOR = Cursor.TEXT_CURSOR;
/**
* @deprecated replaced by {@code Cursor.WAIT_CURSOR}.
*/
@Deprecated
public static final int WAIT_CURSOR = Cursor.WAIT_CURSOR;
/**
* @deprecated replaced by {@code Cursor.SW_RESIZE_CURSOR}.
*/
@Deprecated
public static final int SW_RESIZE_CURSOR = Cursor.SW_RESIZE_CURSOR;
/**
* @deprecated replaced by {@code Cursor.SE_RESIZE_CURSOR}.
*/
@Deprecated
public static final int SE_RESIZE_CURSOR = Cursor.SE_RESIZE_CURSOR;
/**
* @deprecated replaced by {@code Cursor.NW_RESIZE_CURSOR}.
*/
@Deprecated
public static final int NW_RESIZE_CURSOR = Cursor.NW_RESIZE_CURSOR;
/**
* @deprecated replaced by {@code Cursor.NE_RESIZE_CURSOR}.
*/
@Deprecated
public static final int NE_RESIZE_CURSOR = Cursor.NE_RESIZE_CURSOR;
/**
* @deprecated replaced by {@code Cursor.N_RESIZE_CURSOR}.
*/
@Deprecated
public static final int N_RESIZE_CURSOR = Cursor.N_RESIZE_CURSOR;
/**
* @deprecated replaced by {@code Cursor.S_RESIZE_CURSOR}.
*/
@Deprecated
public static final int S_RESIZE_CURSOR = Cursor.S_RESIZE_CURSOR;
/**
* @deprecated replaced by {@code Cursor.W_RESIZE_CURSOR}.
*/
@Deprecated
public static final int W_RESIZE_CURSOR = Cursor.W_RESIZE_CURSOR;
/**
* @deprecated replaced by {@code Cursor.E_RESIZE_CURSOR}.
*/
@Deprecated
public static final int E_RESIZE_CURSOR = Cursor.E_RESIZE_CURSOR;
/**
* @deprecated replaced by {@code Cursor.HAND_CURSOR}.
*/
@Deprecated
public static final int HAND_CURSOR = Cursor.HAND_CURSOR;
/**
* @deprecated replaced by {@code Cursor.MOVE_CURSOR}.
*/
@Deprecated
public static final int MOVE_CURSOR = Cursor.MOVE_CURSOR;
/**
* Frame is in the "normal" state. This symbolic constant names a
* frame state with all state bits cleared.
* @see #setExtendedState(int)
* @see #getExtendedState
*/
public static final int NORMAL = 0;
/**
* This state bit indicates that frame is iconified.
* @see #setExtendedState(int)
* @see #getExtendedState
*/
public static final int ICONIFIED = 1;
/**
* This state bit indicates that frame is maximized in the
* horizontal direction.
* @see #setExtendedState(int)
* @see #getExtendedState
* @since 1.4
*/
public static final int MAXIMIZED_HORIZ = 2;
/**
* This state bit indicates that frame is maximized in the
* vertical direction.
* @see #setExtendedState(int)
* @see #getExtendedState
* @since 1.4
*/
public static final int MAXIMIZED_VERT = 4;
/**
* This state bit mask indicates that frame is fully maximized
* (that is both horizontally and vertically). It is just a
* convenience alias for
* <code>MAXIMIZED_VERT | MAXIMIZED_HORIZ</code>.
*
* <p>Note that the correct test for frame being fully maximized is
* <pre>
* (state & Frame.MAXIMIZED_BOTH) == Frame.MAXIMIZED_BOTH
* </pre>
*
* <p>To test is frame is maximized in <em>some</em> direction use
* <pre>
* (state & Frame.MAXIMIZED_BOTH) != 0
* </pre>
*
* @see #setExtendedState(int)
* @see #getExtendedState
* @since 1.4
*/
public static final int MAXIMIZED_BOTH = MAXIMIZED_VERT | MAXIMIZED_HORIZ;
/**
* Maximized bounds for this frame.
* @see #setMaximizedBounds(Rectangle)
* @see #getMaximizedBounds
* @serial
* @since 1.4
*/
Rectangle maximizedBounds;
/**
* This is the title of the frame. It can be changed
* at any time. {@code title} can be null and if
* this is the case the {@code title} = "".
*
* @serial
* @see #getTitle
* @see #setTitle(String)
*/
String title = "Untitled";
/**
* The frames menubar. If {@code menuBar} = null
* the frame will not have a menubar.
*
* @serial
* @see #getMenuBar
* @see #setMenuBar(MenuBar)
*/
MenuBar menuBar;
/**
* This field indicates whether the frame is resizable.
* This property can be changed at any time.
* {@code resizable} will be true if the frame is
* resizable, otherwise it will be false.
*
* @serial
* @see #isResizable()
*/
boolean resizable = true;
/**
* This field indicates whether the frame is undecorated.
* This property can only be changed while the frame is not displayable.
* {@code undecorated} will be true if the frame is
* undecorated, otherwise it will be false.
*
* @serial
* @see #setUndecorated(boolean)
* @see #isUndecorated()
* @see Component#isDisplayable()
* @since 1.4
*/
boolean undecorated = false;
/**
* {@code mbManagement} is only used by the Motif implementation.
*
* @serial
*/
boolean mbManagement = false; /* used only by the Motif impl. */
// XXX: uwe: abuse old field for now
// will need to take care of serialization
private int state = NORMAL;
/*
* The Windows owned by the Frame.
* Note: in 1.2 this has been superseded by Window.ownedWindowList
*
* @serial
* @see java.awt.Window#ownedWindowList
*/
Vector<Window> ownedWindows;
private static final String base = "frame";
private static int nameCounter = 0;
/*
* JDK 1.1 serialVersionUID
*/
private static final long serialVersionUID = 2673458971256075116L;
static {
/* ensure that the necessary native libraries are loaded */
Toolkit.loadLibraries();
if (!GraphicsEnvironment.isHeadless()) {
initIDs();
}
}
/**
* Constructs a new instance of {@code Frame} that is
* initially invisible. The title of the {@code Frame}
* is empty.
* @exception HeadlessException when
* {@code GraphicsEnvironment.isHeadless()} returns {@code true}
* @see java.awt.GraphicsEnvironment#isHeadless()
* @see Component#setSize
* @see Component#setVisible(boolean)
*/
public Frame() throws HeadlessException {
this("");
}
/**
* Constructs a new, initially invisible {@code Frame} with the
* specified {@code GraphicsConfiguration}.
*
* @param gc the {@code GraphicsConfiguration}
* of the target screen device. If {@code gc}
* is {@code null}, the system default
* {@code GraphicsConfiguration} is assumed.
* @exception IllegalArgumentException if
* {@code gc} is not from a screen device.
* @exception HeadlessException when
* {@code GraphicsEnvironment.isHeadless()} returns {@code true}
* @see java.awt.GraphicsEnvironment#isHeadless()
* @since 1.3
*/
public Frame(GraphicsConfiguration gc) {
this("", gc);
}
/**
* Constructs a new, initially invisible {@code Frame} object
* with the specified title.
* @param title the title to be displayed in the frame's border.
* A {@code null} value
* is treated as an empty string, "".
* @exception HeadlessException when
* {@code GraphicsEnvironment.isHeadless()} returns {@code true}
* @see java.awt.GraphicsEnvironment#isHeadless()
* @see java.awt.Component#setSize
* @see java.awt.Component#setVisible(boolean)
* @see java.awt.GraphicsConfiguration#getBounds
*/
public Frame(String title) throws HeadlessException {
init(title, null);
}
/**
* Constructs a new, initially invisible {@code Frame} object
* with the specified title and a
* {@code GraphicsConfiguration}.
* @param title the title to be displayed in the frame's border.
* A {@code null} value
* is treated as an empty string, "".
* @param gc the {@code GraphicsConfiguration}
* of the target screen device. If {@code gc} is
* {@code null}, the system default
* {@code GraphicsConfiguration} is assumed.
* @exception IllegalArgumentException if {@code gc}
* is not from a screen device.
* @exception HeadlessException when
* {@code GraphicsEnvironment.isHeadless()} returns {@code true}
* @see java.awt.GraphicsEnvironment#isHeadless()
* @see java.awt.Component#setSize
* @see java.awt.Component#setVisible(boolean)
* @see java.awt.GraphicsConfiguration#getBounds
* @since 1.3
*/
public Frame(String title, GraphicsConfiguration gc) {
super(gc);
init(title, gc);
}
private void init(String title, GraphicsConfiguration gc) {
this.title = title;
SunToolkit.checkAndSetPolicy(this);
}
/**
* Construct a name for this component. Called by getName() when the
* name is null.
*/
String constructComponentName() {
synchronized (Frame.class) {
return base + nameCounter++;
}
}
/**
* Makes this Frame displayable by connecting it to
* a native screen resource. Making a frame displayable will
* cause any of its children to be made displayable.
* This method is called internally by the toolkit and should
* not be called directly by programs.
* @see Component#isDisplayable
* @see #removeNotify
*/
public void addNotify() {
synchronized (getTreeLock()) {
if (peer == null) {
peer = getComponentFactory().createFrame(this);
}
FramePeer p = (FramePeer)peer;
MenuBar menuBar = this.menuBar;
if (menuBar != null) {
mbManagement = true;
menuBar.addNotify();
p.setMenuBar(menuBar);
}
p.setMaximizedBounds(maximizedBounds);
super.addNotify();
}
}
/**
* Gets the title of the frame. The title is displayed in the
* frame's border.
* @return the title of this frame, or an empty string ("")
* if this frame doesn't have a title.
* @see #setTitle(String)
*/
public String getTitle() {
return title;
}
/**
* Sets the title for this frame to the specified string.
* @param title the title to be displayed in the frame's border.
* A {@code null} value
* is treated as an empty string, "".
* @see #getTitle
*/
public void setTitle(String title) {
String oldTitle = this.title;
if (title == null) {
title = "";
}
synchronized(this) {
this.title = title;
FramePeer peer = (FramePeer)this.peer;
if (peer != null) {
peer.setTitle(title);
}
}
firePropertyChange("title", oldTitle, title);
}
/**
* Returns the image to be displayed as the icon for this frame.
* <p>
* This method is obsolete and kept for backward compatibility
* only. Use {@link Window#getIconImages Window.getIconImages()} instead.
* <p>
* If a list of several images was specified as a Window's icon,
* this method will return the first item of the list.
*
* @return the icon image for this frame, or {@code null}
* if this frame doesn't have an icon image.
* @see #setIconImage(Image)
* @see Window#getIconImages()
* @see Window#setIconImages
*/
public Image getIconImage() {
java.util.List<Image> icons = this.icons;
if (icons != null) {
if (icons.size() > 0) {
return icons.get(0);
}
}
return null;
}
/**
* {@inheritDoc}
*/
public void setIconImage(Image image) {
super.setIconImage(image);
}
/**
* Gets the menu bar for this frame.
* @return the menu bar for this frame, or {@code null}
* if this frame doesn't have a menu bar.
* @see #setMenuBar(MenuBar)
*/
public MenuBar getMenuBar() {
return menuBar;
}
/**
* Sets the menu bar for this frame to the specified menu bar.
* @param mb the menu bar being set.
* If this parameter is {@code null} then any
* existing menu bar on this frame is removed.
* @see #getMenuBar
*/
public void setMenuBar(MenuBar mb) {
synchronized (getTreeLock()) {
if (menuBar == mb) {
return;
}
if ((mb != null) && (mb.parent != null)) {
mb.parent.remove(mb);
}
if (menuBar != null) {
remove(menuBar);
}
menuBar = mb;
if (menuBar != null) {
menuBar.parent = this;
FramePeer peer = (FramePeer)this.peer;
if (peer != null) {
mbManagement = true;
menuBar.addNotify();
invalidateIfValid();
peer.setMenuBar(menuBar);
}
}
}
}
/**
* Indicates whether this frame is resizable by the user.
* By default, all frames are initially resizable.
* @return {@code true} if the user can resize this frame;
* {@code false} otherwise.
* @see java.awt.Frame#setResizable(boolean)
*/
public boolean isResizable() {
return resizable;
}
/**
* Sets whether this frame is resizable by the user.
* @param resizable {@code true} if this frame is resizable;
* {@code false} otherwise.
* @see java.awt.Frame#isResizable
*/
public void setResizable(boolean resizable) {
boolean oldResizable = this.resizable;
boolean testvalid = false;
synchronized (this) {
this.resizable = resizable;
FramePeer peer = (FramePeer)this.peer;
if (peer != null) {
peer.setResizable(resizable);
testvalid = true;
}
}
// On some platforms, changing the resizable state affects
// the insets of the Frame. If we could, we'd call invalidate()
// from the peer, but we need to guarantee that we're not holding
// the Frame lock when we call invalidate().
if (testvalid) {
invalidateIfValid();
}
firePropertyChange("resizable", oldResizable, resizable);
}
/**
* Sets the state of this frame (obsolete).
* <p>
* In older versions of JDK a frame state could only be NORMAL or
* ICONIFIED. Since JDK 1.4 set of supported frame states is
* expanded and frame state is represented as a bitwise mask.
* <p>
* For compatibility with applications developed
* earlier this method still accepts
* {@code Frame.NORMAL} and
* {@code Frame.ICONIFIED} only. The iconic
* state of the frame is only changed, other aspects
* of frame state are not affected by this method. If
* the state passed to this method is neither {@code
* Frame.NORMAL} nor {@code Frame.ICONIFIED} the
* method performs no actions at all.
* <p>Note that if the state is not supported on a
* given platform, neither the state nor the return
* value of the {@link #getState} method will be
* changed. The application may determine whether a
* specific state is supported via the {@link
* java.awt.Toolkit#isFrameStateSupported} method.
* <p><b>If the frame is currently visible on the
* screen</b> (the {@link #isShowing} method returns
* {@code true}), the developer should examine the
* return value of the {@link
* java.awt.event.WindowEvent#getNewState} method of
* the {@code WindowEvent} received through the
* {@link java.awt.event.WindowStateListener} to
* determine that the state has actually been
* changed.
* <p><b>If the frame is not visible on the
* screen</b>, the events may or may not be
* generated. In this case the developer may assume
* that the state changes immediately after this
* method returns. Later, when the {@code
* setVisible(true)} method is invoked, the frame
* will attempt to apply this state. Receiving any
* {@link
* java.awt.event.WindowEvent#WINDOW_STATE_CHANGED}
* events is not guaranteed in this case also.
*
* @param state either {@code Frame.NORMAL} or
* {@code Frame.ICONIFIED}.
* @see #setExtendedState(int)
* @see java.awt.Window#addWindowStateListener
*/
public synchronized void setState(int state) {
int current = getExtendedState();
if (state == ICONIFIED && (current & ICONIFIED) == 0) {
setExtendedState(current | ICONIFIED);
}
else if (state == NORMAL && (current & ICONIFIED) != 0) {
setExtendedState(current & ~ICONIFIED);
}
}
/**
* Sets the state of this frame. The state is
* represented as a bitwise mask.
* <ul>
* <li>{@code NORMAL}
* <br>Indicates that no state bits are set.
* <li>{@code ICONIFIED}
* <li>{@code MAXIMIZED_HORIZ}
* <li>{@code MAXIMIZED_VERT}
* <li>{@code MAXIMIZED_BOTH}
* <br>Concatenates {@code MAXIMIZED_HORIZ}
* and {@code MAXIMIZED_VERT}.
* </ul>
* <p>Note that if the state is not supported on a
* given platform, neither the state nor the return
* value of the {@link #getExtendedState} method will
* be changed. The application may determine whether
* a specific state is supported via the {@link
* java.awt.Toolkit#isFrameStateSupported} method.
* <p><b>If the frame is currently visible on the
* screen</b> (the {@link #isShowing} method returns
* {@code true}), the developer should examine the
* return value of the {@link
* java.awt.event.WindowEvent#getNewState} method of
* the {@code WindowEvent} received through the
* {@link java.awt.event.WindowStateListener} to
* determine that the state has actually been
* changed.
* <p><b>If the frame is not visible on the
* screen</b>, the events may or may not be
* generated. In this case the developer may assume
* that the state changes immediately after this
* method returns. Later, when the {@code
* setVisible(true)} method is invoked, the frame
* will attempt to apply this state. Receiving any
* {@link
* java.awt.event.WindowEvent#WINDOW_STATE_CHANGED}
* events is not guaranteed in this case also.
*
* @param state a bitwise mask of frame state constants
* @since 1.4
* @see java.awt.Window#addWindowStateListener
*/
public void setExtendedState(int state) {
if ( !isFrameStateSupported( state ) ) {
return;
}
synchronized (getObjectLock()) {
this.state = state;
}
// peer.setState must be called outside of object lock
// synchronization block to avoid possible deadlock
FramePeer peer = (FramePeer)this.peer;
if (peer != null) {
peer.setState(state);
}
}
private boolean isFrameStateSupported(int state) {
if( !getToolkit().isFrameStateSupported( state ) ) {
// * Toolkit.isFrameStateSupported returns always false
// on compound state even if all parts are supported;
// * if part of state is not supported, state is not supported;
// * MAXIMIZED_BOTH is not a compound state.
if( ((state & ICONIFIED) != 0) &&
!getToolkit().isFrameStateSupported( ICONIFIED )) {
return false;
}else {
state &= ~ICONIFIED;
}
return getToolkit().isFrameStateSupported( state );
}
return true;
}
/**
* Gets the state of this frame (obsolete).
* <p>
* In older versions of JDK a frame state could only be NORMAL or
* ICONIFIED. Since JDK 1.4 set of supported frame states is
* expanded and frame state is represented as a bitwise mask.
* <p>
* For compatibility with old programs this method still returns
* {@code Frame.NORMAL} and {@code Frame.ICONIFIED} but
* it only reports the iconic state of the frame, other aspects of
* frame state are not reported by this method.
*
* @return {@code Frame.NORMAL} or {@code Frame.ICONIFIED}.
* @see #setState(int)
* @see #getExtendedState
*/
public synchronized int getState() {
return (getExtendedState() & ICONIFIED) != 0 ? ICONIFIED : NORMAL;
}
/**
* Gets the state of this frame. The state is
* represented as a bitwise mask.
* <ul>
* <li>{@code NORMAL}
* <br>Indicates that no state bits are set.
* <li>{@code ICONIFIED}
* <li>{@code MAXIMIZED_HORIZ}
* <li>{@code MAXIMIZED_VERT}
* <li>{@code MAXIMIZED_BOTH}
* <br>Concatenates {@code MAXIMIZED_HORIZ}
* and {@code MAXIMIZED_VERT}.
* </ul>
*
* @return a bitwise mask of frame state constants
* @see #setExtendedState(int)
* @since 1.4
*/
public int getExtendedState() {
synchronized (getObjectLock()) {
return state;
}
}
static {
AWTAccessor.setFrameAccessor(
new AWTAccessor.FrameAccessor() {
public void setExtendedState(Frame frame, int state) {
synchronized(frame.getObjectLock()) {
frame.state = state;
}
}
public int getExtendedState(Frame frame) {
synchronized(frame.getObjectLock()) {
return frame.state;
}
}
public Rectangle getMaximizedBounds(Frame frame) {
synchronized(frame.getObjectLock()) {
return frame.maximizedBounds;
}
}
}
);
}
/**
* Sets the maximized bounds for this frame.
* <p>
* When a frame is in maximized state the system supplies some
* defaults bounds. This method allows some or all of those
* system supplied values to be overridden.
* <p>
* If {@code bounds} is {@code null}, accept bounds
* supplied by the system. If non-{@code null} you can
* override some of the system supplied values while accepting
* others by setting those fields you want to accept from system
* to {@code Integer.MAX_VALUE}.
* <p>
* Note, the given maximized bounds are used as a hint for the native
* system, because the underlying platform may not support setting the
* location and/or size of the maximized windows. If that is the case, the
* provided values do not affect the appearance of the frame in the
* maximized state.
*
* @param bounds bounds for the maximized state
* @see #getMaximizedBounds()
* @since 1.4
*/
public void setMaximizedBounds(Rectangle bounds) {
synchronized(getObjectLock()) {
this.maximizedBounds = bounds;
}
FramePeer peer = (FramePeer)this.peer;
if (peer != null) {
peer.setMaximizedBounds(bounds);
}
}
/**
* Gets maximized bounds for this frame.
* Some fields may contain {@code Integer.MAX_VALUE} to indicate
* that system supplied values for this field must be used.
*
* @return maximized bounds for this frame; may be {@code null}
* @see #setMaximizedBounds(Rectangle)
* @since 1.4
*/
public Rectangle getMaximizedBounds() {
synchronized(getObjectLock()) {
return maximizedBounds;
}
}
/**
* Disables or enables decorations for this frame.
* <p>
* This method can only be called while the frame is not displayable. To
* make this frame decorated, it must be opaque and have the default shape,
* otherwise the {@code IllegalComponentStateException} will be thrown.
* Refer to {@link Window#setShape}, {@link Window#setOpacity} and {@link
* Window#setBackground} for details
*
* @param undecorated {@code true} if no frame decorations are to be
* enabled; {@code false} if frame decorations are to be enabled
*
* @throws IllegalComponentStateException if the frame is displayable
* @throws IllegalComponentStateException if {@code undecorated} is
* {@code false}, and this frame does not have the default shape
* @throws IllegalComponentStateException if {@code undecorated} is
* {@code false}, and this frame opacity is less than {@code 1.0f}
* @throws IllegalComponentStateException if {@code undecorated} is
* {@code false}, and the alpha value of this frame background
* color is less than {@code 1.0f}
*
* @see #isUndecorated
* @see Component#isDisplayable
* @see Window#getShape
* @see Window#getOpacity
* @see Window#getBackground
* @see javax.swing.JFrame#setDefaultLookAndFeelDecorated(boolean)
*
* @since 1.4
*/
public void setUndecorated(boolean undecorated) {
/* Make sure we don't run in the middle of peer creation.*/
synchronized (getTreeLock()) {
if (isDisplayable()) {
throw new IllegalComponentStateException("The frame is displayable.");
}
if (!undecorated) {
if (getOpacity() < 1.0f) {
throw new IllegalComponentStateException("The frame is not opaque");
}
if (getShape() != null) {
throw new IllegalComponentStateException("The frame does not have a default shape");
}
Color bg = getBackground();
if ((bg != null) && (bg.getAlpha() < 255)) {
throw new IllegalComponentStateException("The frame background color is not opaque");
}
}
this.undecorated = undecorated;
}
}
/**
* Indicates whether this frame is undecorated.
* By default, all frames are initially decorated.
* @return {@code true} if frame is undecorated;
* {@code false} otherwise.
* @see java.awt.Frame#setUndecorated(boolean)
* @since 1.4
*/
public boolean isUndecorated() {
return undecorated;
}
/**
* {@inheritDoc}
*/
@Override
public void setOpacity(float opacity) {
synchronized (getTreeLock()) {
if ((opacity < 1.0f) && !isUndecorated()) {
throw new IllegalComponentStateException("The frame is decorated");
}
super.setOpacity(opacity);
}
}
/**
* {@inheritDoc}
*/
@Override
public void setShape(Shape shape) {
synchronized (getTreeLock()) {
if ((shape != null) && !isUndecorated()) {
throw new IllegalComponentStateException("The frame is decorated");
}
super.setShape(shape);
}
}
/**
* {@inheritDoc}
*/
@Override
public void setBackground(Color bgColor) {
synchronized (getTreeLock()) {
if ((bgColor != null) && (bgColor.getAlpha() < 255) && !isUndecorated()) {
throw new IllegalComponentStateException("The frame is decorated");
}
super.setBackground(bgColor);
}
}
/**
* Removes the specified menu bar from this frame.
* @param m the menu component to remove.
* If {@code m} is {@code null}, then
* no action is taken
*/
public void remove(MenuComponent m) {
if (m == null) {
return;
}
synchronized (getTreeLock()) {
if (m == menuBar) {
menuBar = null;
FramePeer peer = (FramePeer)this.peer;
if (peer != null) {
mbManagement = true;
invalidateIfValid();
peer.setMenuBar(null);
m.removeNotify();
}
m.parent = null;
} else {
super.remove(m);
}
}
}
/**
* Makes this Frame undisplayable by removing its connection
* to its native screen resource. Making a Frame undisplayable
* will cause any of its children to be made undisplayable.
* This method is called by the toolkit internally and should
* not be called directly by programs.
* @see Component#isDisplayable
* @see #addNotify
*/
public void removeNotify() {
synchronized (getTreeLock()) {
FramePeer peer = (FramePeer)this.peer;
if (peer != null) {
// get the latest Frame state before disposing
getState();
if (menuBar != null) {
mbManagement = true;
peer.setMenuBar(null);
menuBar.removeNotify();
}
}
super.removeNotify();
}
}
void postProcessKeyEvent(KeyEvent e) {
if (menuBar != null && menuBar.handleShortcut(e)) {
e.consume();
return;
}
super.postProcessKeyEvent(e);
}
/**
* Returns a string representing the state of this {@code Frame}.
* This method is intended to be used only for debugging purposes, and the
* content and format of the returned string may vary between
* implementations. The returned string may be empty but may not be
* {@code null}.
*
* @return the parameter string of this frame
*/
protected String paramString() {
String str = super.paramString();
if (title != null) {
str += ",title=" + title;
}
if (resizable) {
str += ",resizable";
}
int state = getExtendedState();
if (state == NORMAL) {
str += ",normal";
}
else {
if ((state & ICONIFIED) != 0) {
str += ",iconified";
}
if ((state & MAXIMIZED_BOTH) == MAXIMIZED_BOTH) {
str += ",maximized";
}
else if ((state & MAXIMIZED_HORIZ) != 0) {
str += ",maximized_horiz";
}
else if ((state & MAXIMIZED_VERT) != 0) {
str += ",maximized_vert";
}
}
return str;
}
/**
* Sets the cursor for this frame to the specified type.
*
* @param cursorType the cursor type
* @deprecated As of JDK version 1.1,
* replaced by {@code Component.setCursor(Cursor)}.
*/
@Deprecated
public void setCursor(int cursorType) {
if (cursorType < DEFAULT_CURSOR || cursorType > MOVE_CURSOR) {
throw new IllegalArgumentException("illegal cursor type");
}
setCursor(Cursor.getPredefinedCursor(cursorType));
}
/**
* @deprecated As of JDK version 1.1,
* replaced by {@code Component.getCursor()}.
* @return the cursor type for this frame
*/
@Deprecated
public int getCursorType() {
return (getCursor().getType());
}
/**
* Returns an array of all {@code Frame}s created by this application.
* If called from an applet, the array includes only the {@code Frame}s
* accessible by that applet.
* <p>
* <b>Warning:</b> this method may return system created frames, such
* as a shared, hidden frame which is used by Swing. Applications
* should not assume the existence of these frames, nor should an
* application assume anything about these frames such as component
* positions, {@code LayoutManager}s or serialization.
* <p>
* <b>Note</b>: To obtain a list of all ownerless windows, including
* ownerless {@code Dialog}s (introduced in release 1.6), use {@link
* Window#getOwnerlessWindows Window.getOwnerlessWindows}.
*
* @return the array of all {@code Frame}s created by this application
*
* @see Window#getWindows()
* @see Window#getOwnerlessWindows
*
* @since 1.2
*/
public static Frame[] getFrames() {
Window[] allWindows = Window.getWindows();
int frameCount = 0;
for (Window w : allWindows) {
if (w instanceof Frame) {
frameCount++;
}
}
Frame[] frames = new Frame[frameCount];
int c = 0;
for (Window w : allWindows) {
if (w instanceof Frame) {
frames[c++] = (Frame)w;
}
}
return frames;
}
/* Serialization support. If there's a MenuBar we restore
* its (transient) parent field here. Likewise for top level
* windows that are "owned" by this frame.
*/
/**
* {@code Frame}'s Serialized Data Version.
*
* @serial
*/
private int frameSerializedDataVersion = 1;
/**
* Writes default serializable fields to stream. Writes
* an optional serializable icon {@code Image}, which is
* available as of 1.4.
*
* @param s the {@code ObjectOutputStream} to write
* @serialData an optional icon {@code Image}
* @see java.awt.Image
* @see #getIconImage
* @see #setIconImage(Image)
* @see #readObject(ObjectInputStream)
*/
private void writeObject(ObjectOutputStream s)
throws IOException
{
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