[gnome-calendar] project: add a shortcuts window

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 4ce918c9aa69296f9649c7b3b48c5b94ac173316
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Tue Feb 16 18:25:43 2016 -0200

    project: add a shortcuts window
    
    And with this, we finish the last big UI change
    that will land for 3.20.

 data/calendar.gresource.xml |    1 +
 data/ui/help-overlay.ui     |  115 +++++++++++++++++++++++++++++++++++++++++++
 data/ui/menus.ui            |    4 ++
 3 files changed, 120 insertions(+), 0 deletions(-)
---
diff --git a/data/calendar.gresource.xml b/data/calendar.gresource.xml
index c456eb2..bae71e8 100644
--- a/data/calendar.gresource.xml
+++ b/data/calendar.gresource.xml
@@ -16,5 +16,6 @@
 
   <gresource prefix="/org/gnome/calendar/gtk">
     <file alias="menus.ui" compressed="true" preprocess="xml-stripblanks">ui/menus.ui</file>
+    <file alias="help-overlay.ui" compressed="true" preprocess="xml-stripblanks">ui/help-overlay.ui</file>
   </gresource>
 </gresources>
diff --git a/data/ui/help-overlay.ui b/data/ui/help-overlay.ui
new file mode 100644
index 0000000..2525fe3
--- /dev/null
+++ b/data/ui/help-overlay.ui
@@ -0,0 +1,115 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<interface>
+  <object class="GtkShortcutsWindow" id="help_overlay">
+    <property name="modal">True</property>
+    <child>
+      <object class="GtkShortcutsSection">
+        <property name="visible">True</property>
+        <property name="section-name">shortcuts</property>
+        <property name="max-height">17</property>
+        <child>
+          <object class="GtkShortcutsGroup">
+            <property name="visible">True</property>
+            <property name="title" translatable="yes" context="shortcut window">General</property>
+            <child>
+              <object class="GtkShortcutsShortcut">
+                <property name="visible">True</property>
+                <property name="title" translatable="yes" context="shortcut window">New event</property>
+                <property name="accelerator">&lt;Primary&gt;N</property>
+              </object>
+            </child>
+            <child>
+              <object class="GtkShortcutsShortcut">
+                <property name="visible">True</property>
+                <property name="title" translatable="yes" context="shortcut window">Close window</property>
+                <property name="accelerator">&lt;Primary&gt;Q</property>
+              </object>
+            </child>
+            <child>
+              <object class="GtkShortcutsShortcut">
+                <property name="visible">True</property>
+                <property name="title" translatable="yes" context="shortcut window">Search</property>
+                <property name="accelerator">&lt;Primary&gt;F</property>
+              </object>
+            </child>
+            <child>
+              <object class="GtkShortcutsShortcut">
+                <property name="visible">True</property>
+                <property name="title" translatable="yes" context="shortcut window">Show help</property>
+                <property name="accelerator">F1</property>
+              </object>
+            </child>
+            <child>
+              <object class="GtkShortcutsShortcut">
+                <property name="visible">True</property>
+                <property name="title" translatable="yes" context="shortcut window">Shortcuts</property>
+                <property name="accelerator">&lt;Primary&gt;question &lt;Primary&gt;F1</property>
+              </object>
+            </child>
+          </object>
+        </child>
+        <child>
+          <object class="GtkShortcutsGroup">
+            <property name="visible">True</property>
+            <property name="title" translatable="yes" context="shortcut window">Navigation</property>
+            <child>
+              <object class="GtkShortcutsShortcut">
+                <property name="visible">True</property>
+                <property name="title" translatable="yes" context="shortcut window">Go back</property>
+                <property name="accelerator">&lt;alt&gt;Left</property>
+              </object>
+            </child>
+            <child>
+              <object class="GtkShortcutsShortcut">
+                <property name="visible">True</property>
+                <property name="title" translatable="yes" context="shortcut window">Go forward</property>
+                <property name="accelerator">&lt;alt&gt;Right</property>
+              </object>
+            </child>
+            <child>
+              <object class="GtkShortcutsShortcut">
+                <property name="visible">True</property>
+                <property name="title" translatable="yes" context="shortcut window">Show today</property>
+                <property name="accelerator">&lt;alt&gt;Down &lt;Primary&gt;T</property>
+              </object>
+            </child>
+            <child>
+              <object class="GtkShortcutsShortcut">
+                <property name="visible">True</property>
+                <property name="title" translatable="yes" context="shortcut window">Next view</property>
+                <property name="accelerator">&lt;Primary&gt;Page_Down</property>
+              </object>
+            </child>
+            <child>
+              <object class="GtkShortcutsShortcut">
+                <property name="visible">True</property>
+                <property name="title" translatable="yes" context="shortcut window">Previous view</property>
+                <property name="accelerator">&lt;Primary&gt;Page_Up</property>
+              </object>
+            </child>
+          </object>
+        </child>
+        <child>
+          <object class="GtkShortcutsGroup">
+            <property name="visible">True</property>
+            <property name="title" translatable="yes" context="shortcut window">View</property>
+            <child>
+              <object class="GtkShortcutsShortcut">
+                <property name="visible">True</property>
+                <property name="title" translatable="yes" context="shortcut window">Month view</property>
+                <property name="accelerator">&lt;Primary&gt;2</property>
+              </object>
+            </child>
+            <child>
+              <object class="GtkShortcutsShortcut">
+                <property name="visible">True</property>
+                <property name="title" translatable="yes" context="shortcut window">Year view</property>
+                <property name="accelerator">&lt;Primary&gt;3</property>
+              </object>
+            </child>
+          </object>
+        </child>
+      </object>
+    </child>
+  </object>
+</interface>
diff --git a/data/ui/menus.ui b/data/ui/menus.ui
index b25f70d..a677c66 100644
--- a/data/ui/menus.ui
+++ b/data/ui/menus.ui
@@ -15,6 +15,10 @@
     </section>
     <section>
       <item>
+        <attribute name="label" translatable="yes">_Keyboard Shortcuts</attribute>
+        <attribute name="action">win.show-help-overlay</attribute>
+      </item>
+      <item>
         <attribute name="label" translatable="yes">_About</attribute>
         <attribute name="action">app.about</attribute>
       </item>