[gnome-builder/wip/uajain/word-completion: 1/2] WIP: Improve replaying results

[Umang Jain <uajain src gnome org>]

commit 92102f8bccfc987619b12060e36f0d48109a4a05
Author: Umang Jain <mailumangjain gmail com>
Date:   Wed Aug 30 17:44:51 2017 +0530

    WIP: Improve replaying results

 libide/sourceview/ide-completion-results.c       |   44 ++++++++++++++++++++++
 libide/sourceview/ide-word-completion-provider.c |    7 +++
 2 files changed, 51 insertions(+), 0 deletions(-)
---
diff --git a/libide/sourceview/ide-completion-results.c b/libide/sourceview/ide-completion-results.c
index 89948e1..0a168c8 100644
--- a/libide/sourceview/ide-completion-results.c
+++ b/libide/sourceview/ide-completion-results.c
@@ -53,6 +53,20 @@ typedef struct
    */
   GPtrArray *results;
   /*
+   * sort_direction is same as PROP_DIRECTION in word-completion-provider.
+   * This is useful to determine how to sort the proposals using offsets
+   * in compare_func. See ide_word_completion_results_compare for details.
+   */
+  gint sort_direction;
+  /*
+   * insert_offset and end_offset helps to determine new relative offsets
+   * in case we can replay the results but in an another location. Hence,
+   * recompute new offsets and sort. See ide_word_completion_results_compare 
+   * for details.
+   */
+  gint insert_offset;
+  gint end_offset;
+  /*
    * query is the filtering string that was used to create the
    * initial set of results. All future queries must have this
    * word as a prefix to be reusable.
@@ -93,6 +107,7 @@ DZL_DEFINE_COUNTER (instances, "IdeCompletionResults", "Instances", "Number of I
 enum {
   PROP_0,
   PROP_QUERY,
+  PROP_SORT_DIRECTION,
   LAST_PROP
 };
 
@@ -142,6 +157,17 @@ ide_completion_results_finalize (GObject *object)
   DZL_COUNTER_DEC (instances);
 }
 
+gint
+ide_completion_results_get_sort_direction (IdeCompletionResults *self)
+{
+  IdeCompletionResultsPrivate *priv = ide_completion_results_get_instance_private (self);
+
+  g_return_val_if_fail (IDE_IS_COMPLETION_RESULTS (self), 0);
+
+  return priv->sort_direction;
+
+}
+
 const gchar *
 ide_completion_results_get_query (IdeCompletionResults *self)
 {
@@ -398,6 +424,10 @@ ide_completion_results_get_property (GObject    *object,
       g_value_set_string (value, ide_completion_results_get_query (self));
       break;
 
+    case PROP_SORT_DIRECTION:
+      g_value_set_int (value, ide_completion_results_get_sort_direction (self));
+      break;
+
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
     }
@@ -410,6 +440,7 @@ ide_completion_results_set_property (GObject      *object,
                                      GParamSpec   *pspec)
 {
   IdeCompletionResults *self = IDE_COMPLETION_RESULTS (object);
+  IdeCompletionResultsPrivate *priv = ide_completion_results_get_instance_private (self);
 
   switch (prop_id)
     {
@@ -417,6 +448,10 @@ ide_completion_results_set_property (GObject      *object,
       ide_completion_results_set_query (self, g_value_get_string (value));
       break;
 
+    case PROP_SORT_DIRECTION:
+      priv->sort_direction = g_value_get_int (value);
+      break;
+
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
     }
@@ -438,6 +473,15 @@ ide_completion_results_class_init (IdeCompletionResultsClass *klass)
                          NULL,
                          (G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS));
 
+  properties [PROP_SORT_DIRECTION] =
+    g_param_spec_int ("sort-direction",
+                      "Sort direction",
+                      "Determines whether to sort with ascending or descending value of offset",
+                      -1,
+                       1,
+                       0,
+                      (G_PARAM_READWRITE | G_PARAM_CONSTRUCT |  G_PARAM_STATIC_STRINGS));
+
   g_object_class_install_properties (object_class, LAST_PROP, properties);
 }
 
diff --git a/libide/sourceview/ide-word-completion-provider.c 
b/libide/sourceview/ide-word-completion-provider.c
index 839a689..0675445 100644
--- a/libide/sourceview/ide-word-completion-provider.c
+++ b/libide/sourceview/ide-word-completion-provider.c
@@ -386,6 +386,13 @@ ide_word_completion_provider_populate (GtkSourceCompletionProvider *provider,
     {
       if (ide_completion_results_replay (IDE_COMPLETION_RESULTS (priv->results), priv->current_word))
         {
+          GValue *value;
+
+          value = g_new0(GValue, 1);
+          g_value_init (value, G_TYPE_INT);
+          g_value_set_int (value, priv->direction);
+          g_object_set_property (G_OBJECT (priv->results), "sort-direction", value);
+
           ide_completion_results_present (IDE_COMPLETION_RESULTS (priv->results), provider, context);
           IDE_EXIT;
         }