Tab-modal dialog improvements:...

chrome/browser/tab_contents/tab_contents.cc

Index: chrome/browser/tab_contents/tab_contents.cc
===================================================================
--- chrome/browser/tab_contents/tab_contents.cc	(revision 36364)
+++ chrome/browser/tab_contents/tab_contents.cc	(working copy)
@@ -330,8 +330,10 @@
   int size = static_cast<int>(child_windows_.size());
   for (int i = size - 1; i >= 0; --i) {
     ConstrainedWindow* window = child_windows_[i];
-    if (window)
+    if (window) {
       window->CloseConstrainedWindow();
+      BlockTabContent(false);
+    }
   }
 
   if (blocked_popups_)
@@ -766,9 +768,21 @@
   ConstrainedWindow* window =
       ConstrainedWindow::CreateConstrainedDialog(this, delegate);
   child_windows_.push_back(window);
+
+  if (child_windows_.size() == 1) {
+    window->ShowConstrainedWindow();
+    BlockTabContent(true);
+  }
+
   return window;
 }
 
+void TabContents::BlockTabContent(bool blocked) {
+  render_view_host()->set_ignore_input_events(blocked);
+  if (delegate_)
+    delegate_->SetTabContentBlocked(this, blocked);
+}
+
 void TabContents::AddNewContents(TabContents* new_contents,
                                  WindowOpenDisposition disposition,
                                  const gfx::Rect& initial_pos,
@@ -1002,8 +1016,15 @@
 void TabContents::WillClose(ConstrainedWindow* window) {
   ConstrainedWindowList::iterator it =
       find(child_windows_.begin(), child_windows_.end(), window);
+  bool removed_topmost_window = it == child_windows_.begin();
   if (it != child_windows_.end())
     child_windows_.erase(it);
+  if (removed_topmost_window && child_windows_.size() > 0) {
+    child_windows_[0]->ShowConstrainedWindow();
+    BlockTabContent(true);
+  } else {
+    BlockTabContent(false);
+  }
 }
 
 void TabContents::WillCloseBlockedPopupContainer(
@@ -1403,8 +1424,11 @@
   int size = static_cast<int>(child_windows_.size());
   for (int i = size - 1; i >= 0; --i) {
     ConstrainedWindow* window = child_windows_[i];
-    if (window)
+    if (window) {
+      DCHECK(delegate_);
       window->CloseConstrainedWindow();
+      BlockTabContent(false);
+    }
   }
 
   // Close the popup container.
@@ -2398,6 +2422,13 @@
   return RenderViewHostDelegateHelper::GetWebkitPrefs(prefs, is_dom_ui);
 }
 
+void TabContents::OnIgnoredUIEvent() {
+  if (constrained_window_count()) {
+    ConstrainedWindow* window = *constrained_window_begin();
+    window->FocusConstrainedWindow();
+  }
+}
+
 void TabContents::OnJSOutOfMemory() {
   AddInfoBar(new SimpleAlertInfoBarDelegate(
       this, l10n_util::GetString(IDS_JS_OUT_OF_MEMORY_PROMPT), NULL));