From 006405dc77fafe2d0aec0975bd882d24998d1545 Mon Sep 17 00:00:00 2001
From: joncruz <joncruz@users.sourceforge.net>
Date: Mon, 4 May 2009 05:20:54 +0000
Subject: [PATCH] Implement warning of prior errors.

---
 src/application/editor.cpp |  3 +--
 src/inkscape.cpp           |  7 +++++++
 src/inkview.cpp            |  2 +-
 src/preferences.cpp        | 21 ++++++++++++++++++++-
 src/preferences.h          | 17 +++++++++++++++++
 5 files changed, 46 insertions(+), 4 deletions(-)

diff --git a/src/application/editor.cpp b/src/application/editor.cpp
index c0501389f..49010efdc 100644
--- a/src/application/editor.cpp
+++ b/src/application/editor.cpp
@@ -65,8 +65,7 @@ Editor::Editor (gint /*argc*/, char **argv)
     sp_object_type_register ("sodipodi:namedview", SP_TYPE_NAMEDVIEW);
     sp_object_type_register ("sodipodi:guide", SP_TYPE_GUIDE);
 
-    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
-    prefs->load(true, false);
+    Inkscape::Preferences::get(); // Ensure preferences are loaded
 }
 
 bool
diff --git a/src/inkscape.cpp b/src/inkscape.cpp
index 5d9e217a8..abfffefc2 100644
--- a/src/inkscape.cpp
+++ b/src/inkscape.cpp
@@ -787,6 +787,13 @@ inkscape_application_init (const gchar *argv0, gboolean use_gui)
     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
     InkErrorHandler* handler = new InkErrorHandler(use_gui);
     prefs->setErrorHandler(handler);
+    {
+        Glib::ustring msg;
+        Glib::ustring secondary;
+        if (prefs->getLastError( msg, secondary )) {
+            handler->handleError(msg, secondary);
+        }
+    }
 
     inkscape_load_menus(inkscape);
     sp_input_load_from_preferences();
diff --git a/src/inkview.cpp b/src/inkview.cpp
index cd9d5524b..5cfde2c81 100644
--- a/src/inkview.cpp
+++ b/src/inkview.cpp
@@ -213,7 +213,7 @@ main (int argc, const char **argv)
     LIBXML_TEST_VERSION
 
     Inkscape::GC::init();
-    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    Inkscape::Preferences::get(); // ensure preferences are initialized
 
     gtk_init (&argc, (char ***) &argv);
 
diff --git a/src/preferences.cpp b/src/preferences.cpp
index a6409b5ba..071dbf91e 100644
--- a/src/preferences.cpp
+++ b/src/preferences.cpp
@@ -54,7 +54,8 @@ Preferences::Preferences() :
     _prefs_filename(""),
     _prefs_doc(0),
     _errorHandler(0),
-    _writable(false)
+    _writable(false),
+    _hasError(false)
 {
     // profile_path essentailly returns the argument prefixed by the profile directory.
     gchar *path = profile_path(NULL);
@@ -224,6 +225,21 @@ void Preferences::save()
     sp_repr_save_file(_prefs_doc, utf8name.data());
 }
 
+bool Preferences::getLastError( Glib::ustring& primary, Glib::ustring& secondary )
+{
+    bool result = _hasError;
+    if ( _hasError ) {
+        primary = _lastErrPrimary;
+        secondary = _lastErrSecondary;
+        _hasError = false;
+        _lastErrPrimary.clear();
+        _lastErrSecondary.clear();
+    } else {
+        primary.clear();
+        secondary.clear();
+    }
+    return result;
+}
 
 // Now for the meat.
 
@@ -610,6 +626,9 @@ void Preferences::_keySplit(Glib::ustring const &pref_path, Glib::ustring &node_
 
 void Preferences::_reportError(Glib::ustring const &msg, Glib::ustring const &secondary)
 {
+    _hasError = true;
+    _lastErrPrimary = msg;
+    _lastErrSecondary = secondary;
     if (_errorHandler) {
         _errorHandler->handleError(msg, secondary);
     }
diff --git a/src/preferences.h b/src/preferences.h
index 3c25a520f..7aded5a03 100644
--- a/src/preferences.h
+++ b/src/preferences.h
@@ -228,6 +228,20 @@ public:
     bool isWritable() { return _writable; }
     /*@}*/
 
+    /**
+     * @brief Return details of the last encountered error, if any.
+     *
+     * This method will return true if an error has been encountered, and fill
+     * in the primary and secondary error strings of the last error. If an error
+     * had been encountered, this will reset it.
+     *
+     * @param string to set to the primary error message.
+     * @param string to set to the secondary error message.
+     *
+     * @return True if an error has occurred since last checking, false otherwise.
+     */
+    bool getLastError( Glib::ustring& primary, Glib::ustring& secondary );
+
     /**
      * @name Iterate over directories and entries.
      * @{
@@ -458,9 +472,12 @@ private:
     std::string _prefs_basename; ///< Basename of the prefs file
     std::string _prefs_dir; ///< Directory in which to look for the prefs file
     std::string _prefs_filename; ///< Full filename (with directory) of the prefs file
+    Glib::ustring _lastErrPrimary; ///< Last primary error message, if any.
+    Glib::ustring _lastErrSecondary; ///< Last secondary error message, if any.
     XML::Document *_prefs_doc; ///< XML document storing all the preferences
     ErrorReporter* _errorHandler; ///< Pointer to object reporting errors.
     bool _writable; ///< Will the preferences be saved at exit?
+    bool _hasError; ///< Indication that some error has occurred;
     
     /// Wrapper class for XML node observers
     class PrefNodeObserver;
-- 
2.30.2