text: // Copyright (c) 2011 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 <Carbon/Carbon.h>
  
  #include "build/build_config.h"
  
  #include <vector>
  
  #include "base/bind.h"
  #include "base/logging.h"
  #include "base/mac/mac_util.h"
  #include "content/browser/browser_child_process_host_impl.h"
  #include "content/browser/plugin_process_host.h"
  #include "content/public/browser/browser_thread.h"
  #include "content/public/browser/child_process_data.h"
  #include "ui/gfx/rect.h"
  
  namespace content {
  
  void PluginProcessHost::OnPluginSelectWindow(uint32 window_id,
                                               gfx::Rect window_rect,
                                               bool modal) {
    plugin_visible_windows_set_.insert(window_id);
    if (modal)
      plugin_modal_windows_set_.insert(window_id);
  }
  
  void PluginProcessHost::OnPluginShowWindow(uint32 window_id,
                                             gfx::Rect window_rect,
                                             bool modal) {
    plugin_visible_windows_set_.insert(window_id);
    if (modal)
      plugin_modal_windows_set_.insert(window_id);
    CGRect window_bounds = {
      { window_rect.x(), window_rect.y() },
      { window_rect.width(), window_rect.height() }
    };
    CGRect main_display_bounds = CGDisplayBounds(CGMainDisplayID());
    if (CGRectEqualToRect(window_bounds, main_display_bounds) &&
        (plugin_fullscreen_windows_set_.find(window_id) ==
         plugin_fullscreen_windows_set_.end())) {
      plugin_fullscreen_windows_set_.insert(window_id);
      // If the plugin has just shown a window that's the same dimensions as
      // the main display, hide the menubar so that it has the whole screen.
      // (but only if we haven't already seen this fullscreen window, since
      // otherwise our refcounting can get skewed).
      BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
                              base::Bind(base::mac::RequestFullScreen,
                                         base::mac::kFullScreenModeHideAll));
    }
  }
  
  // Must be called on the UI thread.
  // If plugin_pid is -1, the browser will be the active process on return,
  // otherwise that process will be given focus back before this function returns.
  static void ReleasePluginFullScreen(pid_t plugin_pid) {
    // Releasing full screen only works if we are the frontmost process; grab
    // focus, but give it back to the plugin process if requested.
    base::mac::ActivateProcess(base::GetCurrentProcId());
    base::mac::ReleaseFullScreen(base::mac::kFullScreenModeHideAll);
    if (plugin_pid != -1) {
      base::mac::ActivateProcess(plugin_pid);
    }
  }
  
  void PluginProcessHost::OnPluginHideWindow(uint32 window_id,
                                             gfx::Rect window_rect) {
    bool had_windows = !plugin_visible_windows_set_.empty();
    plugin_visible_windows_set_.erase(window_id);
    bool browser_needs_activation = had_windows &&
        plugin_visible_windows_set_.empty();
  
    plugin_modal_windows_set_.erase(window_id);
    if (plugin_fullscreen_windows_set_.find(window_id) !=
        plugin_fullscreen_windows_set_.end()) {
      plugin_fullscreen_windows_set_.erase(window_id);
      pid_t plugin_pid =
          browser_needs_activation ? -1 : process_->GetData().handle;
      browser_needs_activation = false;
      BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
                              base::Bind(ReleasePluginFullScreen, plugin_pid));
    }
  
    if (browser_needs_activation) {
      BrowserThread::PostTask(
          BrowserThread::UI, FROM_HERE,
          base::Bind(base::mac::ActivateProcess, base::GetCurrentProcId()));
    }
  }
  
  void PluginProcessHost::OnAppActivation() {
    DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
  
    // If our plugin process has any modal windows up, we need to bring it forward
    // so that they act more like an in-process modal window would.
    if (!plugin_modal_windows_set_.empty()) {
      BrowserThread::PostTask(
          BrowserThread::UI, FROM_HERE,
          base::Bind(base::mac::ActivateProcess, process_->GetData().handle));
    }
  }
  
  void PluginProcessHost::OnPluginSetCursorVisibility(bool visible) {
    if (plugin_cursor_visible_ != visible) {
      plugin_cursor_visible_ = visible;
      BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
                              base::Bind(base::mac::SetCursorVisibility,
                                         visible));
    }
  }
  
  }  // namespace content
  