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// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/plugin/plugin_interpose_util_mac.h"
#import <AppKit/AppKit.h>
#import <objc/runtime.h>
#include "chrome/common/plugin_messages.h"
#include "chrome/plugin/plugin_thread.h"
#include "webkit/glue/plugins/webplugin_delegate_impl.h"
namespace mac_plugin_interposing {
// TODO(stuartmorgan): Make this an IPC to order the plugin process above the
// browser process only if the browser is current frontmost.
__attribute__((visibility("default")))
void SwitchToPluginProcess() {
ProcessSerialNumber this_process, front_process;
if ((GetCurrentProcess(&this_process) != noErr) ||
(GetFrontProcess(&front_process) != noErr)) {
return;
}
Boolean matched = false;
if ((SameProcess(&this_process, &front_process, &matched) == noErr) &&
!matched) {
SetFrontProcess(&this_process);
}
}
__attribute__((visibility("default")))
WebPluginDelegateImpl* GetActiveDelegate() {
return WebPluginDelegateImpl::GetActiveDelegate();
}
__attribute__((visibility("default")))
void NotifyBrowserOfPluginSelectWindow(uint32 window_id, CGRect bounds,
bool modal) {
PluginThread* plugin_thread = PluginThread::current();
if (plugin_thread) {
gfx::Rect window_bounds(bounds);
plugin_thread->Send(
new PluginProcessHostMsg_PluginSelectWindow(window_id, window_bounds,
modal));
}
}
__attribute__((visibility("default")))
void NotifyBrowserOfPluginShowWindow(uint32 window_id, CGRect bounds,
bool modal) {
PluginThread* plugin_thread = PluginThread::current();
if (plugin_thread) {
gfx::Rect window_bounds(bounds);
plugin_thread->Send(
new PluginProcessHostMsg_PluginShowWindow(window_id, window_bounds,
modal));
}
}
__attribute__((visibility("default")))
void NotifyBrowserOfPluginHideWindow(uint32 window_id, CGRect bounds) {
PluginThread* plugin_thread = PluginThread::current();
if (plugin_thread) {
gfx::Rect window_bounds(bounds);
plugin_thread->Send(
new PluginProcessHostMsg_PluginHideWindow(window_id, window_bounds));
}
}
__attribute__((visibility("default")))
void NotifyPluginOfSetThemeCursor(WebPluginDelegateImpl* delegate,
ThemeCursor cursor) {
delegate->SetThemeCursor(cursor);
}
__attribute__((visibility("default")))
void NotifyPluginOfSetCursor(WebPluginDelegateImpl* delegate,
const Cursor* cursor) {
delegate->SetCursor(cursor);
}
__attribute__((visibility("default")))
bool GetPluginWindowHasFocus(const WebPluginDelegateImpl* delegate) {
return delegate->GetWindowHasFocus();
}
} // namespace mac_plugin_interposing
#pragma mark -
struct WindowInfo {
uint32 window_id;
CGRect bounds;
WindowInfo(NSWindow* window) {
NSInteger window_num = [window windowNumber];
window_id = window_num > 0 ? window_num : 0;
bounds = NSRectToCGRect([window frame]);
}
};
static void OnPluginWindowClosed(const WindowInfo& window_info) {
if (window_info.window_id == 0)
return;
mac_plugin_interposing::NotifyBrowserOfPluginHideWindow(window_info.window_id,
window_info.bounds);
}
static void OnPluginWindowShown(const WindowInfo& window_info, BOOL is_modal) {
// The window id is 0 if it has never been shown (including while it is the
// process of being shown for the first time); when that happens, we'll catch
// it in _setWindowNumber instead.
static BOOL s_pending_display_is_modal = NO;
if (window_info.window_id == 0) {
if (is_modal)
s_pending_display_is_modal = YES;
return;
}
if (s_pending_display_is_modal) {
is_modal = YES;
s_pending_display_is_modal = NO;
}
mac_plugin_interposing::NotifyBrowserOfPluginShowWindow(
window_info.window_id, window_info.bounds, is_modal);
}
@interface NSWindow (ChromePluginInterposing)
- (void)chromePlugin_orderOut:(id)sender;
- (void)chromePlugin_orderFront:(id)sender;
- (void)chromePlugin_makeKeyAndOrderFront:(id)sender;
- (void)chromePlugin_setWindowNumber:(NSInteger)num;
@end
@implementation NSWindow (ChromePluginInterposing)
- (void)chromePlugin_orderOut:(id)sender {
WindowInfo window_info(self);
[self chromePlugin_orderOut:sender];
OnPluginWindowClosed(window_info);
}
- (void)chromePlugin_orderFront:(id)sender {
mac_plugin_interposing::SwitchToPluginProcess();
[self chromePlugin_orderFront:sender];
OnPluginWindowShown(WindowInfo(self), NO);
}
- (void)chromePlugin_makeKeyAndOrderFront:(id)sender {
mac_plugin_interposing::SwitchToPluginProcess();
[self chromePlugin_makeKeyAndOrderFront:sender];
OnPluginWindowShown(WindowInfo(self), NO);
}
- (void)chromePlugin_setWindowNumber:(NSInteger)num {
if (num > 0)
mac_plugin_interposing::SwitchToPluginProcess();
[self chromePlugin_setWindowNumber:num];
if (num > 0)
OnPluginWindowShown(WindowInfo(self), NO);
}
@end
@interface NSApplication (ChromePluginInterposing)
- (NSInteger)chromePlugin_runModalForWindow:(NSWindow*)window;
@end
@implementation NSApplication (ChromePluginInterposing)
- (NSInteger)chromePlugin_runModalForWindow:(NSWindow*)window {
mac_plugin_interposing::SwitchToPluginProcess();
// This is out-of-order relative to the other calls, but runModalForWindow:
// won't return until the window closes, and the order only matters for
// full-screen windows.
OnPluginWindowShown(WindowInfo(window), YES);
return [self chromePlugin_runModalForWindow:window];
}
@end
@interface NSCursor (ChromePluginInterposing)
- (void)chromePlugin_set;
@end
@implementation NSCursor (ChromePluginInterposing)
- (void)chromePlugin_set {
WebPluginDelegateImpl* delegate = mac_plugin_interposing::GetActiveDelegate();
if (delegate) {
delegate->SetNSCursor(self);
return;
}
[self chromePlugin_set];
}
@end
#pragma mark -
static void ExchangeMethods(Class target_class, SEL original, SEL replacement) {
Method m1 = class_getInstanceMethod(target_class, original);
Method m2 = class_getInstanceMethod(target_class, replacement);
if (m1 && m2)
method_exchangeImplementations(m1, m2);
else
NOTREACHED() << "Cocoa swizzling failed";
}
namespace mac_plugin_interposing {
void SetUpCocoaInterposing() {
Class nswindow_class = [NSWindow class];
ExchangeMethods(nswindow_class, @selector(orderOut:),
@selector(chromePlugin_orderOut:));
ExchangeMethods(nswindow_class, @selector(orderFront:),
@selector(chromePlugin_orderFront:));
ExchangeMethods(nswindow_class, @selector(makeKeyAndOrderFront:),
@selector(chromePlugin_makeKeyAndOrderFront:));
ExchangeMethods(nswindow_class, @selector(_setWindowNumber:),
@selector(chromePlugin_setWindowNumber:));
ExchangeMethods([NSApplication class], @selector(runModalForWindow:),
@selector(chromePlugin_runModalForWindow:));
ExchangeMethods([NSCursor class], @selector(set),
@selector(chromePlugin_set));
}
} // namespace mac_plugin_interposing
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