1/*
2 * Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26
27package sun.lwawt.macosx;
28
29import java.awt.AWTKeyStroke;
30import java.awt.Point;
31import java.awt.Toolkit;
32
33import sun.awt.AWTAccessor;
34import sun.awt.EmbeddedFrame;
35import sun.lwawt.LWWindowPeer;
36
37@SuppressWarnings("serial") // JDK implementation class
38public class CEmbeddedFrame extends EmbeddedFrame {
39
40    private CPlatformResponder responder;
41    private static final Object classLock = new Object();
42    private static volatile CEmbeddedFrame globalFocusedWindow;
43    private CEmbeddedFrame browserWindowFocusedApplet;
44    private boolean parentWindowActive = true;
45
46    public CEmbeddedFrame() {
47        show();
48    }
49
50    public void addNotify() {
51        if (!isDisplayable()) {
52            LWCToolkit toolkit = (LWCToolkit)Toolkit.getDefaultToolkit();
53            LWWindowPeer peer = toolkit.createEmbeddedFrame(this);
54            setPeer(peer);
55            responder = new CPlatformResponder(peer, true);
56        }
57        super.addNotify();
58    }
59
60    public void registerAccelerator(AWTKeyStroke stroke) {}
61
62    public void unregisterAccelerator(AWTKeyStroke stroke) {}
63
64    protected long getLayerPtr() {
65        return AWTAccessor.getComponentAccessor().<LWWindowPeer>getPeer(this)
66                          .getLayerPtr();
67    }
68
69    // -----------------------------------------------------------------------
70    //                          SYNTHETIC EVENT DELIVERY
71    // -----------------------------------------------------------------------
72
73    public void handleMouseEvent(int eventType, int modifierFlags, double pluginX,
74                                 double pluginY, int buttonNumber, int clickCount) {
75        int x = (int)pluginX;
76        int y = (int)pluginY;
77        Point locationOnScreen = getLocationOnScreen();
78        int absX = locationOnScreen.x + x;
79        int absY = locationOnScreen.y + y;
80
81        if (eventType == CocoaConstants.NPCocoaEventMouseEntered) {
82            CCursorManager.nativeSetAllowsCursorSetInBackground(true);
83        } else if (eventType == CocoaConstants.NPCocoaEventMouseExited) {
84            CCursorManager.nativeSetAllowsCursorSetInBackground(false);
85        }
86
87        responder.handleMouseEvent(eventType, modifierFlags, buttonNumber,
88                                   clickCount, x, y, absX, absY);
89    }
90
91    public void handleScrollEvent(double pluginX, double pluginY, int modifierFlags,
92                                  double deltaX, double deltaY, double deltaZ) {
93        int x = (int)pluginX;
94        int y = (int)pluginY;
95        Point locationOnScreen = getLocationOnScreen();
96        int absX = locationOnScreen.x + x;
97        int absY = locationOnScreen.y + y;
98
99        responder.handleScrollEvent(x, y, absX, absY, modifierFlags, deltaX,
100                                    deltaY, NSEvent.SCROLL_PHASE_UNSUPPORTED);
101    }
102
103    public void handleKeyEvent(int eventType, int modifierFlags, String characters,
104                               String charsIgnoringMods, boolean isRepeat, short keyCode,
105                               boolean needsKeyTyped) {
106        responder.handleKeyEvent(eventType, modifierFlags, characters, charsIgnoringMods,
107                keyCode, needsKeyTyped, isRepeat);
108    }
109
110    public void handleInputEvent(String text) {
111        responder.handleInputEvent(text);
112    }
113
114    // handleFocusEvent is called when the applet becames focused/unfocused.
115    // This method can be called from different threads.
116    public void handleFocusEvent(boolean focused) {
117        synchronized (classLock) {
118            // In some cases an applet may not receive the focus lost event
119            // from the parent window (see 8012330)
120            globalFocusedWindow = (focused) ? this
121                    : ((globalFocusedWindow == this) ? null : globalFocusedWindow);
122        }
123        if (globalFocusedWindow == this) {
124            // see bug 8010925
125            // we can't put this to handleWindowFocusEvent because
126            // it won't be invoced if focuse is moved to a html element
127            // on the same page.
128            CClipboard clipboard = (CClipboard) Toolkit.getDefaultToolkit().getSystemClipboard();
129            clipboard.checkPasteboardAndNotify();
130        }
131        if (parentWindowActive) {
132            responder.handleWindowFocusEvent(focused, null);
133        }
134    }
135
136    /**
137     * When the parent window is activated this method is called for all EmbeddedFrames in it.
138     *
139     * For the CEmbeddedFrame which had focus before the deactivation this method triggers
140     * focus events in the following order:
141     *  1. WINDOW_ACTIVATED for this EmbeddedFrame
142     *  2. WINDOW_GAINED_FOCUS for this EmbeddedFrame
143     *  3. FOCUS_GAINED for the most recent focus owner in this EmbeddedFrame
144     *
145     * The caller must not requestFocus on the EmbeddedFrame together with calling this method.
146     *
147     * @param parentWindowActive true if the window is activated, false otherwise
148     */
149    // handleWindowFocusEvent is called for all applets, when the browser
150    // becomes active/inactive. This event should be filtered out for
151    // non-focused applet. This method can be called from different threads.
152    public void handleWindowFocusEvent(boolean parentWindowActive) {
153        this.parentWindowActive = parentWindowActive;
154        // If several applets are running in different browser's windows, it is necessary to
155        // detect the switching between the parent windows and update globalFocusedWindow accordingly.
156        synchronized (classLock) {
157            if (!parentWindowActive) {
158                this.browserWindowFocusedApplet = globalFocusedWindow;
159            }
160            if (parentWindowActive && globalFocusedWindow != this && isParentWindowChanged()) {
161                // It looks like we have switched to another browser window, let's restore focus to
162                // the previously focused applet in this window. If no applets were focused in the
163                // window, we will set focus to the first applet in the window.
164                globalFocusedWindow = (this.browserWindowFocusedApplet != null) ? this.browserWindowFocusedApplet
165                        : this;
166            }
167        }
168        // ignore focus "lost" native request as it may mistakenly
169        // deactivate active window (see 8001161)
170        if (globalFocusedWindow == this) {
171            responder.handleWindowFocusEvent(parentWindowActive, null);
172        }
173    }
174
175    public boolean isParentWindowActive() {
176        return parentWindowActive;
177    }
178
179    private boolean isParentWindowChanged() {
180        // If globalFocusedWindow is located at inactive parent window or null, we have swithed to
181        // another window.
182        return globalFocusedWindow != null ? !globalFocusedWindow.isParentWindowActive() : true;
183    }
184}
185