/* * Copyright (c) 1995, 2021, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions.
*/
/** * 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
*/ publicclass Frame extends Window implements MenuContainer {
/* Note: These are being obsoleted; programs should use the Cursor class * variables going forward. See Cursor and Component.setCursor.
*/
/** * Frame is in the "normal" state. This symbolic constant names a * frame state with all state bits cleared. * @see #setExtendedState(int) * @see #getExtendedState
*/ publicstaticfinalint NORMAL = 0;
/** * This state bit indicates that frame is iconified. * @see #setExtendedState(int) * @see #getExtendedState
*/ publicstaticfinalint ICONIFIED = 1;
/** * This state bit indicates that frame is maximized in the * horizontal direction. * @see #setExtendedState(int) * @see #getExtendedState * @since 1.4
*/ publicstaticfinalint MAXIMIZED_HORIZ = 2;
/** * This state bit indicates that frame is maximized in the * vertical direction. * @see #setExtendedState(int) * @see #getExtendedState * @since 1.4
*/ publicstaticfinalint 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
*/ publicstaticfinalint MAXIMIZED_BOTH = MAXIMIZED_VERT | MAXIMIZED_HORIZ;
/** * 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. */
/** * The bitwise mask of frame state constants.
*/ // XXX: uwe: abuse old field for now // will need to take care of serialization privateint 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;
privatestaticfinal String base = "frame"; privatestaticint nameCounter = 0;
/** * Use serialVersionUID from JDK 1.1 for interoperability.
*/
@Serial privatestaticfinallong 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. * @throws 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. * @throws IllegalArgumentException if * {@code gc} is not from a screen device. * @throws 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, "". * @throws 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. * @throws IllegalArgumentException if {@code gc} * is not from a screen device. * @throws 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);
}
/** * 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
*/ publicvoid 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
*/ publicvoid setTitle(String title) {
String oldTitle = this.title; if (title == null) {
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);
}
} returnnull;
}
/** * 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
*/ publicvoid 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;
/** * 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)
*/ publicboolean 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
*/ publicvoid setResizable(boolean resizable) { boolean oldResizable = this.resizable; boolean testvalid = false;
// 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
*/ publicsynchronizedvoid setState(int state) { int current = getExtendedState(); if (state == ICONIFIED && (current & ICONIFIED) == 0) {
setExtendedState(current | ICONIFIED);
} elseif (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
*/ publicvoid 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);
}
} privateboolean 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 )) { returnfalse;
}else {
state &= ~ICONIFIED;
} return getToolkit().isFrameStateSupported( state );
} returntrue;
}
/** * 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
*/ publicsynchronizedint 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
*/ publicint getExtendedState() { synchronized (getObjectLock()) { return state;
}
}
/** * 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
*/ publicvoid 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
*/ publicvoid setUndecorated(boolean undecorated) { /* Make sure we don't run in the middle of peer creation.*/ synchronized (getTreeLock()) { if (isDisplayable()) { thrownew IllegalComponentStateException("The frame is displayable.");
} if (!undecorated) { if (getOpacity() < 1.0f) { thrownew IllegalComponentStateException("The frame is not opaque");
} if (getShape() != null) { thrownew IllegalComponentStateException("The frame does not have a default shape");
}
Color bg = getBackground(); if ((bg != null) && (bg.getAlpha() < 255)) { thrownew 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
*/ publicboolean isUndecorated() { return undecorated;
}
/** * 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
*/ publicvoid 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
*/ publicvoid removeNotify() { synchronized (getTreeLock()) {
FramePeer peer = (FramePeer)this.peer; if (peer != null) { // get the latest Frame state before disposing
getState();
/** * 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";
} elseif ((state & MAXIMIZED_HORIZ) != 0) {
str += ",maximized_horiz";
} elseif ((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 publicvoid setCursor(int cursorType) { if (cursorType < DEFAULT_CURSOR || cursorType > MOVE_CURSOR) { thrownew 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 publicint 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
*/ publicstatic 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.
*/
/** * 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 * @throws IOException if an I/O error occurs * @serialData an optional icon {@code Image} * @see java.awt.Image * @see #getIconImage * @see #setIconImage(Image) * @see #readObject(ObjectInputStream)
*/
@Serial privatevoid writeObject(ObjectOutputStream s) throws IOException
{
s.defaultWriteObject(); if (icons != null && icons.size() > 0) {
Image icon1 = icons.get(0); if (icon1 instanceof Serializable) {
s.writeObject(icon1); return;
}
}
s.writeObject(null);
}
/** * Reads the {@code ObjectInputStream}. Tries * to read an icon {@code Image}, which is optional * data available as of 1.4. If an icon {@code Image} * is not available, but anything other than an EOF * is detected, an {@code OptionalDataException} * will be thrown. * Unrecognized keys or values will be ignored. * * @param s the {@code ObjectInputStream} to read * @throws ClassNotFoundException if the class of a serialized object could * not be found * @throws java.io.OptionalDataException if an icon {@code Image} is not * available, but anything other than an EOF is detected * @throws HeadlessException if {@code GraphicsEnvironment.isHeadless()} * returns {@code true} * @see java.awt.GraphicsEnvironment#isHeadless() * @see java.awt.Image * @see #getIconImage * @see #setIconImage(Image) * @see #writeObject(ObjectOutputStream)
*/
@Serial privatevoid readObject(ObjectInputStream s) throws ClassNotFoundException, IOException, HeadlessException
{ // HeadlessException is thrown by Window's readObject
s.defaultReadObject(); try {
Image icon = (Image) s.readObject(); if (icons == null) {
icons = new ArrayList<Image>();
icons.add(icon);
}
} catch (java.io.OptionalDataException e) { // pre-1.4 instances will not have this optional data. // 1.6 and later instances serialize icons in the Window class // e.eof will be true to indicate that there is no more // data available for this object.
// If e.eof is not true, throw the exception as it // might have been caused by unrelated reasons. if (!e.eof) { throw (e);
}
}
if (menuBar != null)
menuBar.parent = this;
// Ensure 1.1 serialized Frames can read & hook-up // owned windows properly // if (ownedWindows != null) { for (int i = 0; i < ownedWindows.size(); i++) {
connectOwnedWindow(ownedWindows.elementAt(i));
}
ownedWindows = null;
}
}
/** * Initialize JNI field and method IDs
*/ privatestaticnativevoid initIDs();
/* * --- Accessibility Support --- *
*/
/** * Gets the AccessibleContext associated with this Frame. * For frames, the AccessibleContext takes the form of an * AccessibleAWTFrame. * A new AccessibleAWTFrame instance is created if necessary. * * @return an AccessibleAWTFrame that serves as the * AccessibleContext of this Frame * @since 1.3
*/ public AccessibleContext getAccessibleContext() { if (accessibleContext == null) {
accessibleContext = new AccessibleAWTFrame();
} return accessibleContext;
}
/** * This class implements accessibility support for the * {@code Frame} class. It provides an implementation of the * Java Accessibility API appropriate to frame user-interface elements. * @since 1.3
*/ protectedclass AccessibleAWTFrame extends AccessibleAWTWindow
{ /** * Use serialVersionUID from JDK 1.3 for interoperability.
*/
@Serial privatestaticfinallong serialVersionUID = -6172960752956030250L;
/** * Constructs an {@code AccessibleAWTFrame}.
*/ protected AccessibleAWTFrame() {}
/** * Get the role of this object. * * @return an instance of AccessibleRole describing the role of the * object * @see AccessibleRole
*/ public AccessibleRole getAccessibleRole() { return AccessibleRole.FRAME;
}
/** * Get the state of this object. * * @return an instance of AccessibleStateSet containing the current * state set of the object * @see AccessibleState
*/ public AccessibleStateSet getAccessibleStateSet() {
AccessibleStateSet states = super.getAccessibleStateSet(); if (getFocusOwner() != null) {
states.add(AccessibleState.ACTIVE);
} if (isResizable()) {
states.add(AccessibleState.RESIZABLE);
} return states;
}
} // inner class AccessibleAWTFrame
}
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