[latexila] Document compilation: set tmp location if file not saved

[SÃbastien Wilmet <swilmet src gnome org>]

commit 7b9e0c0106fa5cbfd967ed6c65385808778e92cd
Author: SÃbastien Wilmet <swilmet src gnome org>
Date:   Sun Feb 5 16:44:51 2012 +0100

    Document compilation: set tmp location if file not saved
    
    glib.vapi is needed because g_dir_make_tmp() is missing in the VAPI:
    
    https://bugzilla.gnome.org/show_bug.cgi?id=669416
    
    When this bug is fixed, glib.vapi can be removed and the code adapted.

 TODO                 |   20 +++-----------------
 src/document.vala    |   22 ++++++++++++++++++++++
 src/main_window.vala |   43 ++++++++++++++++++++++++++++++++-----------
 vapi/glib.vapi       |    8 ++++++++
 4 files changed, 65 insertions(+), 28 deletions(-)
---
diff --git a/TODO b/TODO
index 81eaf64..7a98dfa 100644
--- a/TODO
+++ b/TODO
@@ -6,29 +6,15 @@ See also the Roadmap:
 The Roadmap is less detailed, but have a long-term view.
 The TODO is more detailed, but focus more on the short-term.
 
-LaTeXila 2.4
-============
-
-- Possibility to compile an unsaved LaTeX file, to test easily some code without
-  the need to save it in a temporary file that we have to delete just after the test,
-  and that we don't delete anyway.
-
-  The unsaved file would simply be saved somewhere in /tmp/.
-
-- Improve completion:
-	- complete placeholders (\ref, \cite, ...)
-	  (take into account all *.tex, *.bib, ... files of the project)
-
-
-LaTeXila â 2.4
-==============
-
 - Migrate to GTK+ 3 [in progress]
 	- It's not a high priority, since it's not a big issue for GNOME 3 users,
 	  but it would be nice. The problem is that it involves a lot of work,
 	  more than expected. See the branch gnome-3.
 
 - Improve completion:
+	- complete placeholders (\ref, \cite, ...)
+	  (take into account all *.tex, *.bib, ... files of the project)
+
 	- show details by default (now we have to click on the button to see
 	  the details)
 
diff --git a/src/document.vala b/src/document.vala
index 96cf73b..114ff68 100644
--- a/src/document.vala
+++ b/src/document.vala
@@ -587,6 +587,28 @@ public class Document : Gtk.SourceBuffer
         return _structure;
     }
 
+    public bool set_tmp_location ()
+    {
+        /* Create a temporary directory (most probably in /tmp/) */
+        string template = "latexila-XXXXXX";
+        string tmp_dir;
+
+        try
+        {
+            tmp_dir = MyDirUtils.make_tmp (template);
+        }
+        catch (FileError e)
+        {
+            warning ("Impossible to create temporary directory: %s", e.message);
+            return false;
+        }
+
+        /* Set the location as 'tmp.tex' in the temporary directory */
+        this.location = File.new_for_path (Path.build_filename (tmp_dir, "tmp.tex"));
+
+        return true;
+    }
+
 
     /***************
      *    SEARCH
diff --git a/src/main_window.vala b/src/main_window.vala
index 51f4936..7c5c51a 100644
--- a/src/main_window.vala
+++ b/src/main_window.vala
@@ -1226,7 +1226,6 @@ public class MainWindow : Window
     private void build_tools_menu_activate (Gtk.Action action)
     {
         return_if_fail (active_tab != null);
-        return_if_fail (active_document.location != null);
 
         string[] _name = action.name.split ("_");
         int tool_index = int.parse (_name[1]);
@@ -1234,11 +1233,20 @@ public class MainWindow : Window
         BuildTool? tool = BuildTools.get_default ()[tool_index];
         return_if_fail (tool != null);
 
+        if (! tool.compilation)
+            return_if_fail (active_document.location != null);
+
         build_view.show ();
 
         // save the document if it's a compilation (e.g. with rubber)
         if (tool.compilation)
         {
+            if (active_document.location == null)
+            {
+                bool tmp_location_set = active_document.set_tmp_location ();
+                return_if_fail (tmp_location_set);
+            }
+
             int project_id = active_document.project_id;
 
             if (project_id == -1)
@@ -1406,7 +1414,7 @@ public class MainWindow : Window
         Gtk.Action clean_action = action_group.get_action ("BuildClean");
         Gtk.Action view_log_action = action_group.get_action ("BuildViewLog");
 
-        if (active_tab == null || active_document.get_main_file () == null)
+        if (active_tab == null)
         {
             build_tools_action_group.set_sensitive (false);
             clean_action.set_sensitive (false);
@@ -1417,28 +1425,41 @@ public class MainWindow : Window
         // we must set the _action group_ sensitive and then set the sensitivity for each
         // action of the action group
         build_tools_action_group.set_sensitive (true);
+
         bool is_tex = active_document.is_main_file_a_tex_file ();
         clean_action.set_sensitive (is_tex);
         view_log_action.set_sensitive (is_tex);
 
-        string path = active_document.get_main_file ().get_parse_name ();
-        string ext = Utils.get_extension (path);
+        bool unsaved_doc = active_document.location == null;
+        string ext = "";
+        if (! unsaved_doc)
+        {
+            string path = active_document.get_main_file ().get_parse_name ();
+            ext = Utils.get_extension (path);
+        }
 
-        int i = 0;
+        int tool_num = 0;
         foreach (BuildTool tool in BuildTools.get_default ())
         {
             if (! tool.show)
             {
-                i++;
+                tool_num++;
                 continue;
             }
 
-            string[] extensions = tool.extensions.split (" ");
-            bool sensitive = tool.extensions.length == 0 || ext in extensions;
+            Gtk.Action action =
+                build_tools_action_group.get_action (@"BuildTool_$tool_num");
 
-            Gtk.Action action = build_tools_action_group.get_action (@"BuildTool_$i");
-            action.set_sensitive (sensitive);
-            i++;
+            if (unsaved_doc)
+                action.set_sensitive (tool.compilation);
+            else
+            {
+                string[] extensions = tool.extensions.split (" ");
+                bool sensitive = tool.extensions.length == 0 || ext in extensions;
+                action.set_sensitive (sensitive);
+            }
+
+            tool_num++;
         }
     }
 
diff --git a/vapi/glib.vapi b/vapi/glib.vapi
new file mode 100644
index 0000000..a548769
--- /dev/null
+++ b/vapi/glib.vapi
@@ -0,0 +1,8 @@
+namespace GLib
+{
+    namespace MyDirUtils
+    {
+        [CCode (cname = "g_dir_make_tmp", cheader_filename = "glib.h,glib/gstdio.h")]
+        public static string make_tmp (string tmpl) throws FileError;
+    }
+}