From e945f1a347023c8cc50165ed97a2295b85a3e75a Mon Sep 17 00:00:00 2001
From: John Bintz <me@johnbintz.com>
Date: Sun, 13 Aug 2006 18:45:40 +0000
Subject: add interface for disabling interaction during long-running
 operations

(bzr r1596)
---
 src/ui/view/edit-widget-interface.h |  8 ++++++++
 src/ui/view/edit-widget.cpp         | 27 ++++++++++++++++++++++++++-
 src/ui/view/edit-widget.h           |  5 +++++
 3 files changed, 39 insertions(+), 1 deletion(-)

(limited to 'src/ui/view')

diff --git a/src/ui/view/edit-widget-interface.h b/src/ui/view/edit-widget-interface.h
index 605c72b59..7cc0133d3 100644
--- a/src/ui/view/edit-widget-interface.h
+++ b/src/ui/view/edit-widget-interface.h
@@ -5,7 +5,9 @@
  *
  * Authors:
  *     Ralf Stephan <ralf@ark.in-berlin.de> 
+ *     John Bintz <jcoswell@coswellproductions.org>
  *
+ * Copyright (C) 2006 John Bintz
  * Copyright (C) 2005 Ralf Stephan
  *
  * Released under GNU GPL.  Read the file 'COPYING' for more information.
@@ -73,6 +75,12 @@ struct EditWidgetInterface
     /// Force a redraw of the canvas
     virtual void requestCanvasUpdateAndWait() = 0;
     
+    /// Enable interaction on this desktop
+    virtual void enableInteraction() = 0;
+    
+    /// Disable interaction on this desktop
+    virtual void disableInteraction() = 0;
+    
     /// Update the "active desktop" indicator
     virtual void activateDesktop() = 0;
     
diff --git a/src/ui/view/edit-widget.cpp b/src/ui/view/edit-widget.cpp
index 6a4306147..83566c199 100644
--- a/src/ui/view/edit-widget.cpp
+++ b/src/ui/view/edit-widget.cpp
@@ -16,7 +16,9 @@
  *   Derek P. Moore <derekm@hackunix.org>
  *   Lauris Kaplinski <lauris@kaplinski.com>
  *   Frank Felfe <innerspace@iname.com>
+ *   John Bintz <jcoswell@coswellproductions.org>
  *
+ * Copyright (C) 2006 John Bintz
  * Copyright (C) 1999-2005 Authors
  * Copyright (C) 2000-2001 Ximian, Inc.
  *
@@ -74,7 +76,8 @@ EditWidget::EditWidget (SPDocument *doc)
       _act_grp(Gtk::ActionGroup::create()),
       _ui_mgr(Gtk::UIManager::create()),
       _update_s_f(false),
-      _update_a_f(false)
+      _update_a_f(false),
+      _interaction_disabled_counter(0)
 {
     g_warning("Creating new EditWidget");
 
@@ -1302,6 +1305,28 @@ EditWidget::requestCanvasUpdateAndWait()
       gtk_main_iteration_do(FALSE);
 }
 
+void
+EditWidget::enableInteraction()
+{
+  g_return_if_fail(_interaction_disabled_counter > 0);
+  
+  _interaction_disabled_counter--;
+  
+  if (_interaction_disabled_counter == 0) {
+    this->set_sensitive(true);
+  }
+}
+
+void
+EditWidget::disableInteraction()
+{
+  if (_interaction_disabled_counter == 0) {
+    this->set_sensitive(false);
+  }
+  
+  _interaction_disabled_counter++;
+}
+
 void
 EditWidget::activateDesktop()
 {
diff --git a/src/ui/view/edit-widget.h b/src/ui/view/edit-widget.h
index 096137c2a..55a52be4c 100644
--- a/src/ui/view/edit-widget.h
+++ b/src/ui/view/edit-widget.h
@@ -6,7 +6,9 @@
  *   Bryce W. Harrington <bryce@bryceharrington.org>
  *   Derek P. Moore <derekm@hackunix.org>
  *   Ralf Stephan <ralf@ark.in-berlin.de>
+ *   John Bintz <jcoswell@coswellproductions.org>
  *
+ * Copyright (C) 2006 John Bintz
  * Copyright (C) 2004 Bryce Harrington
  *
  * Released under GNU GPL.  Read the file 'COPYING' for more information.
@@ -109,6 +111,8 @@ public:
     virtual void destroy();
     virtual void requestCanvasUpdate();
     virtual void requestCanvasUpdateAndWait();
+    virtual void enableInteraction();
+    virtual void disableInteraction();
     virtual void activateDesktop();
     virtual void deactivateDesktop();
     virtual void viewSetPosition (NR::Point p);
@@ -193,6 +197,7 @@ private:
     void onAdjValueChanged();
 
     bool _update_s_f, _update_a_f;
+    unsigned int _interaction_disabled_counter;
 
     sigc::connection _namedview_modified_connection;
 };
-- 
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