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1/*
2 * Copyright (C) 2010 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#import "config.h"
27#import "PluginProcessProxy.h"
28
29#if ENABLE(PLUGIN_PROCESS)
30
31#import "PluginProcessCreationParameters.h"
32#import "WebKitSystemInterface.h"
33
34@interface WKPlaceholderModalWindow : NSWindow
35@end
36
37@implementation WKPlaceholderModalWindow
38
39// Prevent NSApp from calling requestUserAttention: when the window is shown
40// modally, even if the app is inactive. See 6823049.
41- (BOOL)_wantsUserAttention
42{
43    return NO;
44}
45
46@end
47
48namespace WebKit {
49
50bool PluginProcessProxy::pluginNeedsExecutableHeap(const PluginInfoStore::Plugin& pluginInfo)
51{
52    static bool forceNonexecutableHeapForPlugins = [[NSUserDefaults standardUserDefaults] boolForKey:@"ForceNonexecutableHeapForPlugins"];
53    if (forceNonexecutableHeapForPlugins)
54        return false;
55
56    if (pluginInfo.bundleIdentifier == "com.apple.QuickTime Plugin.plugin")
57        return false;
58
59    return true;
60}
61
62void PluginProcessProxy::platformInitializePluginProcess(PluginProcessCreationParameters& parameters)
63{
64#if USE(ACCELERATED_COMPOSITING) && HAVE(HOSTED_CORE_ANIMATION)
65    parameters.parentProcessName = [[NSProcessInfo processInfo] processName];
66    mach_port_t renderServerPort = WKInitializeRenderServer();
67    if (renderServerPort != MACH_PORT_NULL)
68        parameters.acceleratedCompositingPort = CoreIPC::MachPort(renderServerPort, MACH_MSG_TYPE_COPY_SEND);
69#endif
70}
71
72bool PluginProcessProxy::getPluginProcessSerialNumber(ProcessSerialNumber& pluginProcessSerialNumber)
73{
74    pid_t pluginProcessPID = m_processLauncher->processIdentifier();
75    return GetProcessForPID(pluginProcessPID, &pluginProcessSerialNumber) == noErr;
76}
77
78void PluginProcessProxy::makePluginProcessTheFrontProcess()
79{
80    ProcessSerialNumber pluginProcessSerialNumber;
81    if (!getPluginProcessSerialNumber(pluginProcessSerialNumber))
82        return;
83
84    SetFrontProcess(&pluginProcessSerialNumber);
85}
86
87void PluginProcessProxy::makeUIProcessTheFrontProcess()
88{
89    ProcessSerialNumber processSerialNumber;
90    GetCurrentProcess(&processSerialNumber);
91    SetFrontProcess(&processSerialNumber);
92}
93
94void PluginProcessProxy::setFullscreenWindowIsShowing(bool fullscreenWindowIsShowing)
95{
96    if (m_fullscreenWindowIsShowing == fullscreenWindowIsShowing)
97        return;
98
99    m_fullscreenWindowIsShowing = fullscreenWindowIsShowing;
100    if (m_fullscreenWindowIsShowing)
101        enterFullscreen();
102    else
103        exitFullscreen();
104}
105
106void PluginProcessProxy::enterFullscreen()
107{
108    // Get the current presentation options.
109    m_preFullscreenAppPresentationOptions = [NSApp presentationOptions];
110
111    // Figure out which presentation options to use.
112    unsigned presentationOptions = m_preFullscreenAppPresentationOptions & ~(NSApplicationPresentationAutoHideDock | NSApplicationPresentationAutoHideMenuBar);
113    presentationOptions |= NSApplicationPresentationHideDock | NSApplicationPresentationHideMenuBar;
114
115    [NSApp setPresentationOptions:presentationOptions];
116    makePluginProcessTheFrontProcess();
117}
118
119void PluginProcessProxy::exitFullscreen()
120{
121    // If the plug-in host is the current application then we should bring ourselves to the front when it exits full-screen mode.
122    ProcessSerialNumber frontProcessSerialNumber;
123    GetFrontProcess(&frontProcessSerialNumber);
124
125    // The UI process must be the front process in order to change the presentation mode.
126    makeUIProcessTheFrontProcess();
127    [NSApp setPresentationOptions:m_preFullscreenAppPresentationOptions];
128
129    ProcessSerialNumber pluginProcessSerialNumber;
130    if (!getPluginProcessSerialNumber(pluginProcessSerialNumber))
131        return;
132
133    // If the plug-in process was not the front process, switch back to the previous front process.
134    // (Otherwise we'll keep the UI process as the front process).
135    Boolean isPluginProcessFrontProcess;
136    SameProcess(&frontProcessSerialNumber, &pluginProcessSerialNumber, &isPluginProcessFrontProcess);
137    if (!isPluginProcessFrontProcess)
138        SetFrontProcess(&frontProcessSerialNumber);
139}
140
141void PluginProcessProxy::setModalWindowIsShowing(bool modalWindowIsShowing)
142{
143    if (modalWindowIsShowing == m_modalWindowIsShowing)
144        return;
145
146    m_modalWindowIsShowing = modalWindowIsShowing;
147
148    if (m_modalWindowIsShowing)
149        beginModal();
150    else
151        endModal();
152}
153
154void PluginProcessProxy::beginModal()
155{
156    ASSERT(!m_placeholderWindow);
157    ASSERT(!m_activationObserver);
158
159    m_placeholderWindow.adoptNS([[WKPlaceholderModalWindow alloc] initWithContentRect:NSMakeRect(0, 0, 1, 1) styleMask:NSBorderlessWindowMask backing:NSBackingStoreBuffered defer:YES]);
160
161    m_activationObserver = [[NSNotificationCenter defaultCenter] addObserverForName:NSApplicationWillBecomeActiveNotification object:NSApp queue:nil
162                                                                         usingBlock:^(NSNotification *){ applicationDidBecomeActive(); }];
163
164    [NSApp runModalForWindow:m_placeholderWindow.get()];
165
166    [m_placeholderWindow.get() orderOut:nil];
167    m_placeholderWindow = nullptr;
168}
169
170void PluginProcessProxy::endModal()
171{
172    ASSERT(m_placeholderWindow);
173    ASSERT(m_activationObserver);
174
175    [[NSNotificationCenter defaultCenter] removeObserver:m_activationObserver.get()];
176    m_activationObserver = nullptr;
177
178    [NSApp stopModal];
179
180    makeUIProcessTheFrontProcess();
181}
182
183void PluginProcessProxy::applicationDidBecomeActive()
184{
185    makePluginProcessTheFrontProcess();
186}
187
188
189} // namespace WebKit
190
191#endif // ENABLE(PLUGIN_PROCESS)
192