[gnome-contacts] MaxWidth: rename Center and extract to its own file.

[Niels De Graef <nielsdg src gnome org>]

commit abd8f73708201f858b049385fb28702dd6c8db8e
Author: Niels De Graef <nielsdegraef gmail com>
Date:   Sun Mar 25 12:39:22 2018 +0200

    MaxWidth: rename Center and extract to its own file.
    
    Since we only use it to set the maximum width, Center is no longer a
    good name.
    
    Also added a bit more documentation.

 src/contacts-contact-pane.vala  | 10 +++----
 src/contacts-max-width-bin.vala | 66 +++++++++++++++++++++++++++++++++++++++++
 src/contacts-utils.vala         | 46 ----------------------------
 src/meson.build                 |  1 +
 4 files changed, 72 insertions(+), 51 deletions(-)
---
diff --git a/src/contacts-contact-pane.vala b/src/contacts-contact-pane.vala
index 54e0b4a..1a21557 100644
--- a/src/contacts-contact-pane.vala
+++ b/src/contacts-contact-pane.vala
@@ -198,12 +198,12 @@ public class Contacts.ContactPane : Stack {
     this.sheet.margin = 36;
     this.sheet.set_margin_bottom (24);
 
-    var hcenter = new Center ();
-    hcenter.max_width = 600;
-    hcenter.show ();
-    hcenter.add (this.sheet);
+    var contact_sheet_container = new MaxWidthBin ();
+    contact_sheet_container.max_width = 600;
+    contact_sheet_container.show ();
+    contact_sheet_container.add (this.sheet);
 
-    this.contact_sheet_page.add (hcenter);
+    this.contact_sheet_page.add (contact_sheet_container);
     this.sheet.set_focus_vadjustment (this.contact_sheet_page.get_vadjustment ());
 
     this.contact_sheet_page.get_child ().get_style_context ().add_class ("contacts-main-view");
diff --git a/src/contacts-max-width-bin.vala b/src/contacts-max-width-bin.vala
new file mode 100644
index 0000000..e22e59a
--- /dev/null
+++ b/src/contacts-max-width-bin.vala
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2011 Alexander Larsson <alexl redhat com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * The MaxWidthBin is a very basic helper class to restrict a given widget's
+ * width to a given maximum. Set the widget as the child of this Bin to
+ * restrict its width.
+ */
+public class Contacts.MaxWidthBin : Gtk.Bin {
+
+  public int max_width { get; set; }
+
+  public override void get_preferred_height (out int minimum_height, out int natural_height) {
+    var child = get_child ();
+    if (child != null) {
+      int min, nat;
+      child.get_preferred_height (out min, out nat);
+      minimum_height = min;
+      natural_height = nat;
+    } else {
+      minimum_height = -1;
+      natural_height = -1;
+    }
+  }
+
+  public override void get_preferred_width (out int minimum_width, out int natural_width) {
+    var child = get_child ();
+    if (child != null) {
+      int min, nat;
+      child.get_preferred_width (out min, out nat);
+      minimum_width = min;
+      natural_width = nat;
+    } else {
+      minimum_width = -1;
+      natural_width = -1;
+    }
+  }
+
+  public override void size_allocate (Gtk.Allocation allocation) {
+    Gtk.Allocation new_alloc;
+
+    set_allocation (allocation);
+    new_alloc = allocation;
+    if (allocation.width > this.max_width) {
+      new_alloc.width = this.max_width;
+      new_alloc.x = allocation.x;
+    }
+
+    var child = get_child ();
+    child.size_allocate (new_alloc);
+  }
+}
diff --git a/src/contacts-utils.vala b/src/contacts-utils.vala
index a8042a1..9671ccc 100644
--- a/src/contacts-utils.vala
+++ b/src/contacts-utils.vala
@@ -69,52 +69,6 @@ namespace Contacts {
   }
 }
 
-public class Center : Bin {
-  public int max_width { get; set; }
-
-  public override void get_preferred_height (out int minimum_height, out int natural_height) {
-    var child = get_child ();
-    if (child != null) {
-      int min;
-      int nat;
-      child.get_preferred_height (out min, out nat);
-      minimum_height = min;
-      natural_height = nat;
-    } else {
-      minimum_height = -1;
-      natural_height = -1;
-    }
-  }
-
-  public override void get_preferred_width (out int minimum_width, out int natural_width) {
-    var child = get_child ();
-    if (child != null) {
-      int min;
-      int nat;
-      child.get_preferred_width (out min, out nat);
-      minimum_width = min;
-      natural_width = nat;
-    } else {
-      minimum_width = -1;
-      natural_width = -1;
-    }
-  }
-
-  public override void size_allocate (Gtk.Allocation allocation) {
-    Gtk.Allocation new_alloc;
-
-    set_allocation (allocation);
-    new_alloc = allocation;
-    if (allocation.width > this.max_width) {
-      new_alloc.width = this.max_width;
-      new_alloc.x = allocation.x;
-    }
-
-    var child = get_child ();
-    child.size_allocate (new_alloc);
-  }
-}
-
 namespace Contacts.Utils {
   public void compose_mail (string email) {
     var mailto_uri = "mailto:"; + Uri.escape_string (email, "@" , false);
diff --git a/src/meson.build b/src/meson.build
index fe3db78..b472ece 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -22,6 +22,7 @@ contacts_vala_sources = [
   'contacts-linked-personas-dialog.vala',
   'contacts-linking.vala',
   'contacts-list-pane.vala',
+  'contacts-max-width-bin.vala',
   'contacts-settings.vala',
   'contacts-setup-window.vala',
   'contacts-store.vala',