[latexila/wip/build-tools-revamp] Clear last build tool run operation

[Sébastien Wilmet <swilmet src gnome org>]

commit cdc3c42f1de5dafcdbac8732ed740a97f264ac79
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sat May 24 15:00:24 2014 +0200

    Clear last build tool run operation

 docs/reference/latexila-sections.txt      |    2 ++
 src/liblatexila/latexila-build-job.c      |   16 ++++++++++++++++
 src/liblatexila/latexila-build-job.h      |    2 ++
 src/liblatexila/latexila-build-tool.c     |   27 +++++++++++++++++++++++++++
 src/liblatexila/latexila-build-tool.h     |    2 ++
 src/liblatexila/latexila-post-processor.c |    2 ++
 src/main_window_build_tools.vala          |   12 +++++++++++-
 7 files changed, 62 insertions(+), 1 deletions(-)
---
diff --git a/docs/reference/latexila-sections.txt b/docs/reference/latexila-sections.txt
index 1b830d0..f05cba2 100644
--- a/docs/reference/latexila-sections.txt
+++ b/docs/reference/latexila-sections.txt
@@ -69,6 +69,7 @@ latexila_build_tool_get_description
 latexila_build_tool_to_xml
 latexila_build_tool_run_async
 latexila_build_tool_run_finish
+latexila_build_tool_clear
 <SUBSECTION Standard>
 LATEXILA_BUILD_TOOL
 LATEXILA_BUILD_TOOL_CLASS
@@ -90,6 +91,7 @@ latexila_build_job_clone
 latexila_build_job_to_xml
 latexila_build_job_run_async
 latexila_build_job_run_finish
+latexila_build_job_clear
 <SUBSECTION Standard>
 LATEXILA_BUILD_JOB
 LATEXILA_BUILD_JOB_CLASS
diff --git a/src/liblatexila/latexila-build-job.c b/src/liblatexila/latexila-build-job.c
index 641fc99..5b176b3 100644
--- a/src/liblatexila/latexila-build-job.c
+++ b/src/liblatexila/latexila-build-job.c
@@ -572,5 +572,21 @@ latexila_build_job_run_finish (LatexilaBuildJob *build_job,
     }
 
   g_clear_object (&build_job->priv->task);
+  g_clear_object (&build_job->priv->file);
+
   return succeed;
 }
+
+/**
+ * latexila_build_job_clear:
+ * @build_job: a build job.
+ *
+ * Clears the last run operation. latexila_build_job_run_finish() must have been
+ * called before calling this function.
+ */
+void
+latexila_build_job_clear (LatexilaBuildJob *build_job)
+{
+  g_clear_object (&build_job->priv->build_view);
+  g_clear_object (&build_job->priv->post_processor);
+}
diff --git a/src/liblatexila/latexila-build-job.h b/src/liblatexila/latexila-build-job.h
index f4bef9b..bff5294 100644
--- a/src/liblatexila/latexila-build-job.h
+++ b/src/liblatexila/latexila-build-job.h
@@ -66,6 +66,8 @@ void                latexila_build_job_run_async                  (LatexilaBuild
 gboolean            latexila_build_job_run_finish                 (LatexilaBuildJob *build_job,
                                                                    GAsyncResult     *result);
 
+void                latexila_build_job_clear                      (LatexilaBuildJob *build_job);
+
 G_END_DECLS
 
 #endif /* __LATEXILA_BUILD_JOB_H__ */
diff --git a/src/liblatexila/latexila-build-tool.c b/src/liblatexila/latexila-build-tool.c
index a45ff02..c2914f0 100644
--- a/src/liblatexila/latexila-build-tool.c
+++ b/src/liblatexila/latexila-build-tool.c
@@ -787,5 +787,32 @@ latexila_build_tool_run_finish (LatexilaBuildTool *build_tool,
     }
 
   g_task_propagate_boolean (G_TASK (result), NULL);
+
   g_clear_object (&build_tool->priv->task);
+  g_clear_object (&build_tool->priv->file);
+  g_clear_object (&build_tool->priv->build_view);
+}
+
+/**
+ * latexila_build_tool_clear:
+ * @build_tool: a build tool
+ *
+ * Clears the last run operation. latexila_build_tool_run_finish() must have
+ * been called before calling this function.
+ *
+ * The build tool can keep build messages or other information in memory. For
+ * example if a build job contains detailed messages, the two trees of messages
+ * must be kept in memory so it can switch between them when the "More details"
+ * button is toggled.
+ */
+void
+latexila_build_tool_clear (LatexilaBuildTool *build_tool)
+{
+  GList *l;
+
+  for (l = build_tool->priv->jobs->head; l != NULL; l = l->next)
+    {
+      LatexilaBuildJob *build_job = l->data;
+      latexila_build_job_clear (build_job);
+    }
 }
diff --git a/src/liblatexila/latexila-build-tool.h b/src/liblatexila/latexila-build-tool.h
index 32c5dc6..b497fe8 100644
--- a/src/liblatexila/latexila-build-tool.h
+++ b/src/liblatexila/latexila-build-tool.h
@@ -72,6 +72,8 @@ void                  latexila_build_tool_run_async                 (LatexilaBui
 void                  latexila_build_tool_run_finish                (LatexilaBuildTool *build_tool,
                                                                      GAsyncResult      *result);
 
+void                  latexila_build_tool_clear                     (LatexilaBuildTool *build_tool);
+
 G_END_DECLS
 
 #endif /* __LATEXILA_BUILD_TOOL_H__ */
diff --git a/src/liblatexila/latexila-post-processor.c b/src/liblatexila/latexila-post-processor.c
index a5a461b..a53b698 100644
--- a/src/liblatexila/latexila-post-processor.c
+++ b/src/liblatexila/latexila-post-processor.c
@@ -228,6 +228,7 @@ latexila_post_processor_finalize (GObject *object)
   if (pp->priv->line_buffer != NULL)
     {
       g_string_free (pp->priv->line_buffer, TRUE);
+      pp->priv->line_buffer = NULL;
     }
 
   G_OBJECT_CLASS (latexila_post_processor_parent_class)->finalize (object);
@@ -467,6 +468,7 @@ latexila_post_processor_process_finish (LatexilaPostProcessor *pp,
   if (pp->priv->line_buffer != NULL)
     {
       g_string_free (pp->priv->line_buffer, TRUE);
+      pp->priv->line_buffer = NULL;
     }
 }
 
diff --git a/src/main_window_build_tools.vala b/src/main_window_build_tools.vala
index d44b596..dc8d2de 100644
--- a/src/main_window_build_tools.vala
+++ b/src/main_window_build_tools.vala
@@ -57,6 +57,9 @@ public class MainWindowBuildTools
     private UIManager _ui_manager;
     private Latexila.BuildView _build_view;
     private BottomPanel _bottom_panel;
+
+    // Used for running a build tool, and clear it when running another build tool.
+    private Latexila.BuildTool? _build_tool;
     private Cancellable? _cancellable;
 
     private Gtk.ActionGroup _static_action_group;
@@ -350,7 +353,12 @@ public class MainWindowBuildTools
             Utils.flush_queue ();
         }
 
-        _bottom_panel.show ();
+        if (_build_tool != null)
+            _build_tool.clear ();
+
+        _build_tool = tool;
+
+        /* Run the build tool */
 
         Gtk.Action stop_exec = _static_action_group.get_action ("BuildStopExecution");
         stop_exec.sensitive = true;
@@ -363,6 +371,8 @@ public class MainWindowBuildTools
             _cancellable = null;
             stop_exec.sensitive = false;
         });
+
+        _bottom_panel.show ();
     }
 
     private void connect_toggle_actions ()