Add documentation for date format in editor widget configuration

src/ui/qgsattributetypeedit.ui

@@ -7,13 +7,23 @@
     <x>0</x>
     <y>0</y>
     <width>751</width>
-    <height>481</height>
+    <height>487</height>
    </rect>
   </property>
   <property name="windowTitle">
    <string>Attribute Edit Dialog</string>
   </property>
   <layout class="QGridLayout" name="gridLayout_4">
+   <item row="4" column="1">
+    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+     </property>
+    </widget>
+   </item>
    <item row="0" column="0" rowspan="5">
     <widget class="QListWidget" name="selectionListWidget">
      <item>
@@ -103,23 +113,13 @@
      </item>
     </widget>
    </item>
-   <item row="4" column="1">
-    <widget class="QDialogButtonBox" name="buttonBox">
-     <property name="orientation">
-      <enum>Qt::Horizontal</enum>
-     </property>
-     <property name="standardButtons">
-      <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
-     </property>
-    </widget>
-   </item>
-   <item row="0" column="1">
-    <widget class="QCheckBox" name="isFieldEditableCheckBox">
+   <item row="1" column="1">
+    <widget class="QCheckBox" name="labelOnTopCheckBox">
      <property name="text">
-      <string>Editable</string>
+      <string>Label on top</string>
      </property>
      <property name="checked">
-      <bool>true</bool>
+      <bool>false</bool>
      </property>
     </widget>
    </item>
@@ -132,7 +132,7 @@
       </sizepolicy>
      </property>
      <property name="currentIndex">
-      <number>14</number>
+      <number>11</number>
      </property>
      <widget class="QWidget" name="lineEditPage">
       <layout class="QVBoxLayout" name="verticalLayout_1">
@@ -614,19 +614,6 @@
      </widget>
      <widget class="QWidget" name="calendarPage">
       <layout class="QGridLayout" name="gridLayout_5">
-       <item row="3" column="1">
-        <spacer name="verticalSpacer_9">
-         <property name="orientation">
-          <enum>Qt::Vertical</enum>
-         </property>
-         <property name="sizeHint" stdset="0">
-          <size>
-           <width>20</width>
-           <height>303</height>
-          </size>
-         </property>
-        </spacer>
-       </item>
        <item row="2" column="0">
         <widget class="QLabel" name="label_10">
          <property name="text">
@@ -644,6 +631,29 @@
        <item row="2" column="1">
         <widget class="QLineEdit" name="leDateFormat"/>
        </item>
+       <item row="3" column="0" colspan="2">
+        <widget class="QLabel" name="label_11">
+         <property name="text">
+          <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Example formats:&lt;/p&gt;&lt;table border=&quot;0&quot; style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px;&quot; cellspacing=&quot;2&quot; cellpadding=&quot;0&quot; bgcolor=&quot;#f6f6f6&quot;&gt;&lt;thead&gt;&lt;tr&gt;&lt;td style=&quot; vertical-align:top; padding-left:10; padding-right:15; padding-top:5; padding-bottom:5;&quot;&gt;&lt;p align=&quot;center&quot;&gt;&lt;span style=&quot; font-family:'Open Sans,sans-serif'; font-size:12px; font-weight:600; color:#363534;&quot;&gt;Format&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td style=&quot; vertical-align:top; padding-left:10; padding-right:15; padding-top:5; padding-bottom:5;&quot;&gt;&lt;p align=&quot;center&quot;&gt;&lt;span style=&quot; font-family:'Open Sans,sans-serif'; font-size:12px; font-weight:600; color:#363534;&quot;&gt;Result&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/thead&gt;&lt;tr&gt;&lt;td bgcolor=&quot;#f6f6f6&quot; style=&quot; vertical-align:top; padding-left:10; padding-right:10; padding-top:3; padding-bottom:3;&quot;&gt;&lt;p&gt;&lt;span style=&quot; font-family:'Open Sans,sans-serif'; font-size:11px; color:#66666e; background-color:#f6f6f6;&quot;&gt;dd.MM.yyyy&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td bgcolor=&quot;#f6f6f6&quot; style=&quot; vertical-align:top; padding-left:10; padding-right:10; padding-top:3; padding-bottom:3;&quot;&gt;&lt;p&gt;&lt;span style=&quot; font-family:'Open Sans,sans-serif'; font-size:11px; color:#66666e; background-color:#f6f6f6;&quot;&gt;21.05.2001&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td bgcolor=&quot;#ffffff&quot; style=&quot; vertical-align:top; padding-left:10; padding-right:10; padding-top:3; padding-bottom:3;&quot;&gt;&lt;p&gt;&lt;span style=&quot; font-family:'Open Sans,sans-serif'; font-size:11px; color:#66666e; background-color:#ffffff;&quot;&gt;ddd MMMM d yy&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td bgcolor=&quot;#ffffff&quot; style=&quot; vertical-align:top; padding-left:10; padding-right:10; padding-top:3; padding-bottom:3;&quot;&gt;&lt;p&gt;&lt;span style=&quot; font-family:'Open Sans,sans-serif'; font-size:11px; color:#66666e; background-color:#ffffff;&quot;&gt;Tue May 21 01&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td bgcolor=&quot;#f6f6f6&quot; style=&quot; vertical-align:top; padding-left:10; padding-right:10; padding-top:3; padding-bottom:3;&quot;&gt;&lt;p&gt;&lt;span style=&quot; font-family:'Open Sans,sans-serif'; font-size:11px; color:#66666e; background-color:#f6f6f6;&quot;&gt;hh:mm:ss.zzz&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td bgcolor=&quot;#f6f6f6&quot; style=&quot; vertical-align:top; padding-left:10; padding-right:10; padding-top:3; padding-bottom:3;&quot;&gt;&lt;p&gt;&lt;span style=&quot; font-family:'Open Sans,sans-serif'; font-size:11px; color:#66666e; background-color:#f6f6f6;&quot;&gt;14:13:09.042&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td bgcolor=&quot;#ffffff&quot; style=&quot; vertical-align:top; padding-left:10; padding-right:10; padding-top:3; padding-bottom:3;&quot;&gt;&lt;p&gt;&lt;span style=&quot; font-family:'Open Sans,sans-serif'; font-size:11px; color:#66666e; background-color:#ffffff;&quot;&gt;h:m:s ap&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td bgcolor=&quot;#ffffff&quot; style=&quot; vertical-align:top; padding-left:10; padding-right:10; padding-top:3; padding-bottom:3;&quot;&gt;&lt;p&gt;&lt;span style=&quot; font-family:'Open Sans,sans-serif'; font-size:11px; color:#66666e; background-color:#ffffff;&quot;&gt;2:13:9 pm&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p&gt;&lt;a href=&quot;http://qt-project.org/doc/qt-5.0/qtcore/qdatetime.html#toString&quot;&gt;&lt;span style=&quot; text-decoration: underline; color:#0000ff;&quot;&gt;Reference documentation&lt;/span&gt;&lt;/a&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+         </property>
+         <property name="openExternalLinks">
+          <bool>true</bool>
+         </property>
+        </widget>
+       </item>
+       <item row="4" column="0">
+        <spacer name="verticalSpacer_9">
+         <property name="orientation">
+          <enum>Qt::Vertical</enum>
+         </property>
+         <property name="sizeHint" stdset="0">
+          <size>
+           <width>20</width>
+           <height>40</height>
+          </size>
+         </property>
+        </spacer>
+       </item>
       </layout>
      </widget>
      <widget class="QWidget" name="valueRelationPage">
@@ -870,13 +880,13 @@
      </widget>
     </widget>
    </item>
-   <item row="1" column="1">
-    <widget class="QCheckBox" name="labelOnTopCheckBox">
+   <item row="0" column="1">
+    <widget class="QCheckBox" name="isFieldEditableCheckBox">
      <property name="text">
-      <string>Label on top</string>
+      <string>Editable</string>
      </property>
      <property name="checked">
-      <bool>false</bool>
+      <bool>true</bool>
      </property>
     </widget>
    </item>