[libadwaita/wip/exalm/view-switcher-cleanup: 18/21] view-switcher: Remove the auto policy

[Alexander Mikhaylenko <alexm src gnome org>]

commit 9c1c44b8e8a32eeeb7ad1b71ad2acc29d3983f5d
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Tue Aug 31 15:50:02 2021 +0500

    view-switcher: Remove the auto policy
    
    AdwViewSwitcherTitle uses 2 view switchers now. There's no reason to also
    provide the auto policy, and it complicates the code a lot.

 doc/migrating-libhandy-1-4-to-libadwaita.md | 12 ++++++++----
 src/adw-view-switcher.c                     | 11 +++--------
 src/adw-view-switcher.h                     |  1 -
 tests/test-view-switcher.c                  |  7 ++-----
 4 files changed, 13 insertions(+), 18 deletions(-)
---
diff --git a/doc/migrating-libhandy-1-4-to-libadwaita.md b/doc/migrating-libhandy-1-4-to-libadwaita.md
index f93eecc7..8d826c66 100644
--- a/doc/migrating-libhandy-1-4-to-libadwaita.md
+++ b/doc/migrating-libhandy-1-4-to-libadwaita.md
@@ -254,6 +254,10 @@ You should stop using [property@Gtk.Stack:transition-type] and
 [property@Gtk.Stack:transition-duration] properties before switching to
 [class@Adw.ViewStack].
 
+The `auto` view switcher policy has been removed. [class@Adw.ViewSwitcher] only
+has narrow and wide policies; if you had used the `auto` policy, use an
+[class@Adw.Squeezer] with two view switchers inside.
+
 ### Adapt to [class@Adw.ViewSwitcher] API Changes
 
 The "narrow-ellipsize" property has been removed. Narrow view switchers always
@@ -266,10 +270,10 @@ The "policy" property has been removed. If you had used it, use a plain
 
 ### Adapt to [class@Adw.ViewSwitcherTitle] API Changes
 
-The "policy" property has been removed, the behavior is similar to the `auto`
-policy. If you had used `wide` or `narrow` policies, use an [class@Adw.Squeezer]
-with an [class@Adw.ViewSwitcher] and an [class@Adw.WindowTitle] inside, with the
-switcher having the desired policy.
+The "policy" property has been removed, the behavior is similar to the removed
+`auto` policy. If you had used `wide` or `narrow` policies, use an
+[class@Adw.Squeezer] with an [class@Adw.ViewSwitcher] and an
+[class@Adw.WindowTitle] inside, with the switcher having the desired policy.
 
 ### Adapt to [class@Adw.Avatar] API Changes
 
diff --git a/src/adw-view-switcher.c b/src/adw-view-switcher.c
index 45345834..3e3b73fa 100644
--- a/src/adw-view-switcher.c
+++ b/src/adw-view-switcher.c
@@ -42,7 +42,6 @@
 
 /**
  * AdwViewSwitcherPolicy:
- * @ADW_VIEW_SWITCHER_POLICY_AUTO: Automatically adapt to the best fitting mode
  * @ADW_VIEW_SWITCHER_POLICY_NARROW: Force the narrow mode
  * @ADW_VIEW_SWITCHER_POLICY_WIDE: Force the wide mode
  *
@@ -371,6 +370,7 @@ adw_view_switcher_measure (GtkWidget      *widget,
 
     switch (self->policy) {
     case ADW_VIEW_SWITCHER_POLICY_NARROW:
+    default:
       min = max_v_min * n_children;
       nat = max_v_nat * n_children;
       break;
@@ -378,11 +378,6 @@ adw_view_switcher_measure (GtkWidget      *widget,
       min = max_h_min * n_children;
       nat = max_h_nat * n_children;
       break;
-    case ADW_VIEW_SWITCHER_POLICY_AUTO:
-    default:
-      min = max_v_min * n_children;
-      nat = max_h_nat * n_children;
-      break;
     }
   } else {
     while (g_hash_table_iter_next (&iter, (gpointer *) &page, (gpointer *) &button)) {
@@ -488,7 +483,7 @@ adw_view_switcher_class_init (AdwViewSwitcherClass *klass)
                        "Policy",
                        "The policy to determine the mode to use",
                        ADW_TYPE_VIEW_SWITCHER_POLICY,
-                       ADW_VIEW_SWITCHER_POLICY_AUTO,
+                       ADW_VIEW_SWITCHER_POLICY_NARROW,
                        G_PARAM_EXPLICIT_NOTIFY | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
 
   /**
@@ -550,7 +545,7 @@ adw_view_switcher_new (void)
 AdwViewSwitcherPolicy
 adw_view_switcher_get_policy (AdwViewSwitcher *self)
 {
-  g_return_val_if_fail (ADW_IS_VIEW_SWITCHER (self), ADW_VIEW_SWITCHER_POLICY_AUTO);
+  g_return_val_if_fail (ADW_IS_VIEW_SWITCHER (self), ADW_VIEW_SWITCHER_POLICY_NARROW);
 
   return self->policy;
 }
diff --git a/src/adw-view-switcher.h b/src/adw-view-switcher.h
index b39954f2..5682fbb0 100644
--- a/src/adw-view-switcher.h
+++ b/src/adw-view-switcher.h
@@ -25,7 +25,6 @@ ADW_AVAILABLE_IN_ALL
 G_DECLARE_FINAL_TYPE (AdwViewSwitcher, adw_view_switcher, ADW, VIEW_SWITCHER, GtkWidget)
 
 typedef enum {
-  ADW_VIEW_SWITCHER_POLICY_AUTO,
   ADW_VIEW_SWITCHER_POLICY_NARROW,
   ADW_VIEW_SWITCHER_POLICY_WIDE,
 } AdwViewSwitcherPolicy;
diff --git a/tests/test-view-switcher.c b/tests/test-view-switcher.c
index b2157e41..dafc5463 100644
--- a/tests/test-view-switcher.c
+++ b/tests/test-view-switcher.c
@@ -15,16 +15,13 @@ test_adw_view_switcher_policy (void)
   view_switcher = g_object_ref_sink (ADW_VIEW_SWITCHER (adw_view_switcher_new ()));
   g_assert_nonnull (view_switcher);
 
-  g_assert_cmpint (adw_view_switcher_get_policy (view_switcher), ==, ADW_VIEW_SWITCHER_POLICY_AUTO);
-
-  adw_view_switcher_set_policy (view_switcher, ADW_VIEW_SWITCHER_POLICY_NARROW);
   g_assert_cmpint (adw_view_switcher_get_policy (view_switcher), ==, ADW_VIEW_SWITCHER_POLICY_NARROW);
 
   adw_view_switcher_set_policy (view_switcher, ADW_VIEW_SWITCHER_POLICY_WIDE);
   g_assert_cmpint (adw_view_switcher_get_policy (view_switcher), ==, ADW_VIEW_SWITCHER_POLICY_WIDE);
 
-  adw_view_switcher_set_policy (view_switcher, ADW_VIEW_SWITCHER_POLICY_AUTO);
-  g_assert_cmpint (adw_view_switcher_get_policy (view_switcher), ==, ADW_VIEW_SWITCHER_POLICY_AUTO);
+  adw_view_switcher_set_policy (view_switcher, ADW_VIEW_SWITCHER_POLICY_NARROW);
+  g_assert_cmpint (adw_view_switcher_get_policy (view_switcher), ==, ADW_VIEW_SWITCHER_POLICY_NARROW);
 }